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Welding Terms and Definitions Dictionary

X
 
 -  Some information courtesy of American Welding Society, Lincoln Electric and Miller Welds -
Rental Equipment
 
Alternating Current (AC)
 -  An electric current which periodically reverses direction. It is the form in which electric power is delivered to businesses and residences.
Direct Current (DC)
 -  Flows in one direction and does not reverse its direction of flow as does alternating current.
Intermetallic
 - 

A term used to describe a compound material composed of two or more metals or of a metal and a nonmetal.

Across the arc wire feeders
 -  Also referred to as voltage-sensing wire feeders. The wire feeder is powered by the welding cable instead of a control cable. This configuration provides the benefit of fewer cables running back to the power source. Voltage control at the point of use is not possible without the addition of a control cable however, technologies such as ArcReach and CrossLinc now provided remote control capability via the welding cable.
Actual throat
 -  The shortest distance from the root of a fillet weld to its face.
All-weld-metal test specimen
 -  A test specimen with the reduced section composed wholly of weld metal
Allmand Maxi-Power MP125 (Canada) Diesel Engine Generator Isuzu 4HK1X Tier 3
 -  Prime Power - 125 kVA (100 kW) Standby Power - 137 kVA (110 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Isuzu 4HK1X, 4 cylinder, 152 HP @ 1,800 RPM, Tier 3
Sound Level @ 23 ft - NO LOAD - <66 dBA
Allmand Maxi-Power MP150 Diesel Engine Generator Isuzu 6HK1X Tier 3 Flex
 -  Prime Power - 150 kVA (120 kW) Standby Power - 165 kVA (132 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Isuzu 6HK1X, 4 cylinder, 190 HP @ 1,800 RPM, Tier 3 Flex
Sound Level @ 23 ft - NO LOAD - <68 dBA
Allmand Maxi-Power MP150 Diesel Engine Generator John Deere 6068HFG05 Turbo Tier 4 Final
 -  Prime Power - 150 kVA (120 kW) Standby Power - 165 kVA (132 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
John Deere 6068HFG05 Turbo, 6 cylinder, 6.8L, 235 HP @ 1,800 RPM, Tier 4 Final
Sound Level @ 23 ft - FULL LOAD - 66 dBA
Allmand Maxi-Power MP25 Diesel Engine Generator Isuzu 4LE2T Turbo
 -  Prime Power - 25 kVA (20 kW) Standby Power - 27.5 kVA (20 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Isuzu 4LE2T Turbo, 2.2L, 4 cylinder, 33 HP @ 1,800 RPM, Tier 4 Final
Acceptable Fuel Types (Engine Only) - Ultra Low Sulfur Diesel (ULSD)
Sound Level @ 23 ft - NO LOAD - 62 dBA, FULL LOAD - 63 dBA
USA DOT Compliant, Not CSA Listed, Transport Canada Compliant
Allmand Maxi-Power MP40 Diesel Engine Generator Kubota V3300 Interim Tier 4
 -  Prime Power - 38 kVA (30.4 kW) Standby Power - 39 kVA (31.2 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Kubota V3300, 4 cylinder, 47 HP @ 1,800 RPM, Interim Tier 4
Sound Level @ 23 ft - NO LOAD - <61 dBA
Allmand Maxi-Power MP45 Diesel Engine Generator Isuzu 4LE2X Turbo Tier 4 Final
 -  Prime Power - 45 kVA (36 kW) Standby Power - 48.5 kVA (39 kW), Voltage - 120/127/139/240/254/277/1 Phase, 208/220/240/416/440/480/3 Phase
Isuzu 4LE2X Turbo with Air Cooler, 2.2L, 4 cylinder, 57.7 HP @ 1,800 RPM, Tier 4 Final
Acceptable Fuel Types (Engine Only) - Ultra Low Sulfur Diesel (ULSD)
Sound Level @ 23 ft - NO LOAD - 61 dBA, FULL LOAD - 64 dBA
USA DOT Compliant, Not CSA Listed, Transport Canada Compliant
Allmand Maxi-Power MP65 Diesel Engine Generator Isuzu 4JJ1X Tier 4 Final
 -  Prime Power - 63 kVA (50 kW) Standby Power - 69 kVA (55 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Isuzu 4JJ1X, 2.2L, 4 cylinder, 86.5 HP @ 1,800 RPM, Tier 4 Final
Allmand Maxi-Power MP65-8B1 Diesel Engine Generator Isuzu 4JJ1X Tier 3 Flex
 -  Prime Power - 63 kVA (50 kW) Standby Power - 67 kVA (53.6 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Isuzu 4JJ1X, 2.2L, 4 cylinder, 98 HP @ 1,800 RPM, Tier 4 Final
Allmand Maxi-Power MP65-8C1 Diesel Engine Generator Kubota V3300 Interim Tier 4
 -  Prime Power - 63 kVA (50 kW) Standby Power - 67 kVA (53.6 kW), Voltage - 120/240/277/1 Phase, 208/240/416/480/3 Phase
Kubota V3300, 4 cylinder, 76 HP @ 1,800 RPM, Interim Tier 4
Allmand Night-Lite PRO II LD Portable Light Tower, 8 kW
 -  Kubota D-1105 BG 13.5 hp (8 kW generator), 4-1250 watt metal halide fixtures, initial output of 150,000 lumens per lamp, Domestic Shipping Weight: Light Fixtures: 15 lbs. (6.8 kg) (each) Trailer and Mast: 1,610 lbs. (732 kg), Height mast lowered: 5 ft. 9 in. (1.75 m) Height mast raised: 30 ft. (9.1 m) Length with fixtures: 14 ft. 7 in. (4.45 m) Width: 4 ft. 3 in. (1.3 m) Outrigger Width: 8 ft. 4 in. (2.54 m) Wheels and Tires: 13 in.
Alloy
 -  A mixture of metallic elements combined to provide specific properties such as greater resistance to corrosion or improved strength. For example, brass is an alloy of copper and zinc; steel is an alloy of iron and carbon.
Amperage
 -  The measurement of the amount of electricity flowing past a given point in a conductor per second. Current is another name for amperage.
Arc
 -  The physical gap between the end of the electrode and the base metal. The physical gap causes heat due to resistance of current flow and arc rays.
Arc blow
 -  The deflection of an electric arc from its normal path because of magnetic forces.
Arc force
 -  Arc force prevents the electrode from sticking during welding. Arc force is a temporary increase of the output current during welding when the arc is too short. This feature supports production with consistently excellent arc performance. It also enhances simple position welding making the job easier. In order to produce an outstanding weld performance on a variety of electrodes (rutile, basic or cellulose), the arc force can be finely adjusted with a simple knob. To have a smooth arc with less spatter, set the knob to minimum (rutile, basic). For a more crisp arc, with more penetration, set it to maximum.
Arc seam weld
 -  A seam weld made by an arc welding process.
Arc spot weld
 -  A spot weld made by an arc welding process.
Arc time
 -  The time during which an arc is maintained in making an arc weld.
Arc voltage
 -  The voltage across the welding arc.
Arc Welding
 -  Welding processes which use heat from the resistance of current flow and arc rays to produce coalescence of metals. Can use either direct (DC) or alternating (AC) current, consumable or non-consumable electrodes, with or without the application of pressure.
Arc welding electrode
 -  A component of the welding circuit through which current is conducted between the electrode holder and the arc.
Arc welding gun
 -  In semi-automatic, machine and automatic welding, a manipulating device to transfer current and guide the electrode into the arc. It may include provisions for shielding and arc initiation.
As-welded
 -  The condition of weld metal, welded joints, and weldments after welding but prior to any subsequent thermal, mechanical, or chemical treatments.
Asynchronous welder generator
 -  An asynchronous generator is an alternator that utilizes an air-gap rotating magnetic-field between a stator and a rotor to interact with an induced current in a rotor winding. An asynchronous generator requires no maintenance since there is no collector ring, brush, or rotor excitation winding. It is sometimes called an induction generator. General efficiency is higher than that of a synchronous generator with the same capacity and the same speed. Red-D-Arc's GX200 DC CC gas engine welder employs an asynchronous generator to produce welding current.
Autogenous weld
 -  A fusion weld made without the addition of filler metal.
Automatic welding
 -  Welding with equipment which performs the welding operation without adjustment of the controls by a welding operator. The equipment may of may not perform the loading and unloading of the work. See machine welding.
Automatic Welding
 -  Uses equipment that welds without the constant adjusting of controls by the welder or operator. Equipment controls joint alignment by using an automatic sensing device.
Axis of a weld
 -  A line through the length of a weld, perpendicular to and at the geometric center of its cross section.
Back gouging
 -  The removal of weld metal and base metal from the other side of a partially welded joint to assure complete penetration upon subsequent welding from that side.
Backhand welding
 -  A welding technique in which the welding torch or gun is directed opposite to the progress of welding. Sometimes referred to as the “pull gun technique” in GMAW and FCAW.
Backing
 -  A material (base metal, weld metal, carbon, or granular material) placed at the root of a weld joint for the purpose of supporting molten weld metal.
Backing pass
 -  A pass made to deposit a baking weld.
Backing ring
 -  Backing in the form of a ring, generally used in the welding of piping.
Backing strip
 -  Backing in the form of a strip.
Backstep sequence
 -  A longitudinal sequence in which the weld bead increments are deposited in the direction opposite to the progress of welding the joint. See block sequence, cascade sequence,continuous sequence, joint building sequence, and longitudinal sequence.
Bare electrode
 -  A filler metal electrode consisting of a single metal or alloy that has been produced into a wire, strip, or bar form and that has had no coating or covering applied to it other than that which was incidental to its manufacture or preservation.
Bare metal arc welding (BMAW)
 -  An arc welding process which produces coalescence of metals by heating them with an electric arc between a bare or lightly coated metal electrode and the work. Neither shielding nor pressure is used and filler metal is obtained from the electrode. (This process is now obsolete in industrial applications).
Base metal (material)
 -  The metal (material) to be welded, brazed, soldered, or cut.
Base metal test specimen
 -  A test specimen composed wholly of base-metal.
Bend Test
 -  A destructive testing method where the weld specimen is bent to a specified bend radius to evaluate the ductility and soundness of the weld. See Weld Quality Assurance
Benefits of Renting a Generator Instead of Buying One
Bevel
 -  An angular type of edge preparation.
Bevel angle
 -  The angle formed between the prepared edge of a member and a plane perpendicular to the surface of the member.
Bison 3205-12” 3-Jaw, Self-Centering Scroll Chuck, Plain Back
 -  Type: 3205-12” Part number: 7-800-1200 Mfr Part Number: 353205070500 Diameter: 12" Through-hole: 4.06"
3 - scroll chuck, 2 - 3-jaw/cast iron body, 0 - plain back mount, 5 - 2-piece jaws, 12 - size diameter
Note: Can be bolted to an adapter plate for mounting on any 4-slot positioner table
Blind joint
 -  A joint, no portion of which is visible.
Block sequence
 -  A combined longitudinal and buildup sequence for a continuous multiple pass weld in which separated lengths are completely or partially built up in cross section before intervening lengths are deposited.
Boxing
 -  The continuation of a fillet weld around a corner of a member as an extension of the principal weld.
Break test
 -  A destructive testing method where a fillet weld sample is broken and the broken surfaces examined for discontinuities. See Weld Quality Assurance
Bug-O MDS AFR-1090
 -  Rail Alignment Tool, for semi-flex rail
Bug-O MDS AFR-2010 R.E.
 -  On/Off Magnet, for semi-flex rail
Bug-O MDS AFR-2010-HH R.E.
 -  On/Off Magnet, for semi-flex rail
Bug-O MDS AFR-3000
 -  Rail, Semi-Flex, can be flexed inside or outside to a minimum radius of 15' (5.0 m) or 30' (10 m) diameter without permanent deformation
Bug-O MDS AGS-1002
 -  Control Module, Arc Gouging, provides direction and speed control for the AGS gouging systems. Interfaces with the Arc Gouging system to automatically provide travel when the arc is established
Bug-O MDS ARM-1090
 -  Rail Alignment Tool, gauging device for rapid alignment of rails to joint, for aluminum rigid rail
Bug-O MDS ARM-2010
 -  R.E. On/Off Magnet, for aluminum rigid rail
Bug-O MDS ARM-2010-HH R.E.
 -  On/Off Magnet, for aluminum rigid rail
Bug-O MDS ARM-2015
 -  Spacer, use with ARM-2010 and ARM-2010-HH only, for aluminum rigid rail
Bug-O MDS ARM-2248
 -  Magnet Plate, Short, for aluminum rigid rail
Bug-O MDS ARM-2265
 -  Fixed Magnet with Release, for aluminum rigid rail
Bug-O MDS ARM-2325
 -  Swivel Magnet with Release, for aluminum rigid rail
Bug-O MDS ARM-2380
 -  Support Bar with Screw Feet for BRR
Bug-O MDS ARM-2390
 -  Support Bar Kit of Three (3) with screw feet for BRR
Bug-O MDS ARM-2425
 -  Swivel Magnet with Release, for semi-flex rail
Bug-O MDS ARM-2465
 -  Fixed Magnet with Release, for semi-flex rail
Bug-O MDS ARM-2480
 -  Support Bar with Magnets for BRR
Bug-O MDS ARM-2490
 -  Support Bar Kit of Three (3) with Magnets for BRR
Bug-O MDS ARM-2580
 -  Support Bar with R.E. On/Off Magnets for BRR
Bug-O MDS ARM-2590
 -  Support Bar Kit of Three (3) with R.E. On/Off Magnets for BRR
Bug-O MDS ARR-1080
 -  Rail, Heavy Duty Rigid
Bug-O MDS ARR-1085
 -  Rail, Heavy Duty Rigid
Bug-O MDS ARR-1200
 -  Rail, Extra Heavy Duty Rigid
Bug-O MDS ARR-1250
 -  Rail, Extra Heavy Duty Rigid
Bug-O MDS ARV-12040-20
 -  Vacuum Supports for BRR-1210-XX, 20"
Bug-O MDS ARV-12040-27
 -  Vacuum Supports for BRR-1210-XX, 27
Bug-O MDS ARV-12040-34
 -  Vacuum Supports for BRR-1210-XX, 34"
Bug-O MDS ARV-12040-41
 -  Vacuum Supports for BRR-1210-XX, 41"
Bug-O MDS ARV-12040-48
 -  Vacuum Supports for BRR-1210-XX, 48"
Bug-O MDS BRR-1180
 -  Bent Rigid Rail Section, for circumferential applications, can be ordered either as a complete ring or as individual sections
Bug-O MDS BUG-5910
 -  Split Tube Carriage for bent aluminum rigid rail applications, can be placed anywhere along the track and easily adjusts to various work diameters
Bug-O MDS CAS-2050
 -  Automatic Height Control System for WPD-1100 Linear Weaver
Bug-O MDS CAS-2060
 -  Automatic Height Control for WPD-2100 Pendulum Weaver
Bug-O MDS CIR-1010-3
 -  MDS Manifold Hose Assembly, 2-hose
Bug-O MDS FMD-1020
 -  Rail Alignment Tool, for hi-flex rail
Bug-O MDS FMD-1045
 -  MDS Universal Limit Kit for hi-flex rail
Bug-O MDS FMD-1050
 -  Rail, Hi-Flex, without magnet assemblies
Bug-O MDS FMD-1105
 -  Drive Carriage, Hi-Flex
Bug-O MDS FMD-2010
 -  R.E. On/Off Magnet, for hi-flex rail
Bug-O MDS FMD-2010-HH
 -  On/Off Magnet, for hi-flex rail
Bug-O MDS FMD-2015
 -  Spacer Bar, use with ARM-2010 & ARM-2010-HH only, for hi-flex rail
Bug-O MDS FMD-2155
 -  Rail, Hi-Flex, with 8 permanent magnets
Bug-O MDS FMD-2170
 -  Rail, Hi-Flex, with 8 rare earth on/off magnets
Bug-O MDS FMD-2170HH
 -  Rail, Hi-Flex, with 8 rare earth on/off magnets
Bug-O MDS FMD-2325
 -  Hi-Flex Magnet with release for hi-flex rail
Bug-O MDS FMD-4000
 -  MDS Hi-Flex Welding Kit, 120VAC
Bug-O MDS FMD-4002
 -  MDS Hi-Flex Welding Kit, 120VAC
Bug-O MDS FMD-4004
 -  MDS Hi-Flex Welding Kit, 42VAC
Bug-O MDS FMD-4100
 -  MDS Hi-Flex Plasma Cutting Kit, 120VAC
Bug-O MDS FMD-4102
 -  MDS Hi-Flex Plasma Cutting Kit, 240VAC
Bug-O MDS FMD-4104
 -  MDS Hi-Flex Plasma Cutting Kit, 42VAC
Bug-O MDS FMD-4150
 -  MDS Hi-Flex Oy-Fuel Cutting Kit, 120VAC
Bug-O MDS FMD-4152
 -  MDS Hi-Flex Oy-Fuel Cutting Kit, 240VAC
Bug-O MDS FMD-4154
 -  MDS Hi-Flex Oy-Fuel Cutting Kit, 42VAC
Bug-O MDS FMD-4200
 -  MDS Hi-Flex Linear Weaver Kit, 120VAC
Bug-O MDS FMD-4202
 -  MDS Hi-Flex Linear Weaver Kit, 240VAC
Bug-O MDS FMD-4204
 -  MDS Hi-Flex Linear Weaver Kit, 42VAC
Bug-O MDS FMD-4300
 -  MDS Hi-Flex Pendulum Weaver Kit, 120VAC
Bug-O MDS FMD-4302
 -  MDS Hi-Flex Pendulum Weaver Kit, 240VAC
Bug-O MDS FMD-4304
 -  MDS Hi-Flex Pendulum Weaver Kit, 42VAC
Bug-O MDS FMD-4400
 -  MDS Hi-Flex Programmable Stitch Kit, 120VAC
Bug-O MDS FMD-4402
 -  MDS Hi-Flex Programmable Stitch Kit, 240VAC
Bug-O MDS FMD-4404
 -  MDS FMD-4404 MDS Hi-Flex Programmable Stitch Kit, 42VAC
Bug-O MDS FMD-4500
 -  MDS Straight Line Programmable Shape Plasma Cutting/Welding Kit, 120VAC
Bug-O MDS FMD-4502
 -  MDS Straight Line Programmable Shape Plasma Cutting/Welding Kit, 240VAC
Bug-O MDS FMD-4504
 -  MDS Straight Line Programmable Shape Plasma Cutting/Welding Kit, 42VAC
Bug-O MDS FMD-4550
 -  MDS Hi-Flex Programmable Shape Oxy-Fuel Cutting Kit, 120VA
Bug-O MDS FMD-4552
 -  MDS Hi-Flex Programmable Shape Oxy-Fuel Cutting Kit, 240VAC
Bug-O MDS FMD-4554
 -  MDS Hi-Flex Programmable Shape Oxy-Fuel Cutting Kit, 42VAC
Bug-O MDS Modular Drive System
 -  Bug-O MDS Modular Drive System, includes Master Drive Unit MPD-1000 (120VAC), optional Control Modules (for programmable shape cutting or welding, straight-line cutting and/or welding, straightline gouging, programmable stitch welding, as well as weave capability), optional aluminum rails (rigid/bent rigid/semi-flex/hi-flex), carriages (standard/bent/hi-flex), various attachments and supports, LIT-MDS-BRO-0319
Bug-O MDS MPD-1000
 -  Master Drive Unit 120VAC,50/60Hz, runs from 2-120 in/min (51-3048 mm/min) with a vertical load capacity of 60 lbs (27 kg) and a horizontal load capacity of 100 lbs (45 kg)
Bug-O MDS MPD-1002
 -  Master Drive Unit 240VAC,50/60Hz, runs from 2-120 in/min (51-3048 mm/min) with a vertical load capacity of 60 lbs (27 kg) and a horizontal load capacity of 100 lbs (45 kg)
Bug-O MDS MPD-1004
 -  Master Drive Unit 42VAC,50/60Hz, runs from 2-120 in/min (51-3048 mm/min) with a vertical load capacity of 60 lbs (27 kg) and a horizontal load capacity of 100 lbs (45 kg)
Bug-O MDS MPD-1035
 -  MDS Handle with Cable Anchor
Bug-O MDS MPD-1065
 -  Releasable Carriage 12" (205 mm)
Bug-O MDS MUG-1119-32
 -  MDS Manifold Hose Assembly, 3-hose
Bug-O MDS Weaver Control Modules for MDS Systems
 -  Operates the Pendulum or Linear Weaver, and the Master Drive Unit. Features include: a digital readout and control knob for longitudinal travel speed; a switch for Forward/Stop/Reverse tractor control; an amplitude knob to set weave width from 1/8"-2" (3-50 mm); weave speed control up to 100 in/min (254 cm/min); controls for left and right dwell; a knob to control steering up to 2" (50 mm), either side of center; weld contact; and a power On/Off switch. One of four weld patterns can be chosen using the mode selector switch, as shown in the figure below. The MDS-1005-DIAL Weaver Control Module w/ locking dials provides all of the function controls of the MDS1005 and provides lockable numerical display dials for all oscillator functions
Bug-O MDS WPD-1100
 -  Weaver, Linear, 1/8" to 2" (3-50 mm) wide welds
Bug-O MDS WPD-1100-40
 -  Weaver, Linear
Bug-O MDS WPD-2100
 -  Weaver, Pendulum
Bug-O MDS-1002
 -  Control Module, Straight Line Control, provides direction and speed control for continuous cutting or welding application
Bug-O MDS-1003
 -  Control Module, Stitch Control, provides direction and speed control for continuous travel or Stitch Mode with adjustments for travel time, rapid time and puddle build/ crater fill times
Bug-O MDS-1004
 -  Control Module, Programmable Stitch Control, provides stitch controls for welding or cutting with the Modular Drive System. Program Stitch by distance, automatic stop and/ or return to start at the end of the cycle, independent timers for puddle-buildup. All stitching parameters are set and displayed on a graphic screen. This allows each setting to be set exactly the same every time
Bug-O MDS-1005
 -  Control Module, Weaver Control
Bug-O MDS-1005-DIAL
 -  Control Module, Weaver Control
Bug-O MDS-1040
 -  MDS Machine Rack Welding Group
Bug-O MDS-1045
 -  MDS Extended Mounting Plate
Bug-O MDS-1050
 -  MDS Machine Rack Cutting Group
Bug-O MDS-1055
 -  MDS Universal Limit Kit for Rigid Rail Applications
Bug-O MDS-1060-10
 -  MDS Remote Control, 10 ft.
Bug-O MDS-1060-25
 -  MDS Remote Control, 25 ft.
Bug-O MDS-1085
 -  MDS Weld Contact Cable, 10 ft.
Bug-O MDS-1085-25
 -  MDS Weld Contact Cable, 25 ft.
Bug-O MDS-1085-50
 -  MDS Weld Contact Cable, 50 ft.
Bug-O MDS-1165
 -  Control Module, Programmable Shape Control, provides 2-axis, encoder controlled, allpositon, custom shape motion. Shapes and patterns are built by segments to control motion and function. The 2 axis motion is provided by the MDS Master drive and the Linear Weaver w/ 40" (101.6 cm) Crossarm
Bug-O MDS-3025
 -  MDS Quick Action Manifold, 2-hose
Bug-O MDS-4000
 -  MDS Straight Line Welding Kit, 120VAC
Bug-O MDS-4002
 -  MDS Straight Line Welding Kit, 240VAC
Bug-O MDS-4004
 -  MDS Straight Line Welding Kit, 42VAC
Bug-O MDS-4100
 -  MDS Straight Line Plasma Kit, 120VAC
Bug-O MDS-4102
 -  MDS Straight Line Plasma Kit, 240VAC
Bug-O MDS-4104
 -  MDS Straight Line Plasma Kit, 42VA
Bug-O MDS-4150
 -  MDS Straight Line Oxy-Fuel Cutting Kit, 120VAC
Bug-O MDS-4152
 -  MDS Straight Line Oxy-Fuel Cutting Kit, 240VAC
Bug-O MDS-4154
 -  MDS Straight Line Oxy-Fuel Cutting Kit, 42VAC
Bug-O MDS-4200
 -  MDS Straight Line Linear Weaver Kit, 120VAC
Bug-O MDS-4202
 -  MDS Straight Line Linear Weaver Kit, 240VAC
Bug-O MDS-4204
 -  MDS Straight Line Linear Weaver Kit, 42VAC
Bug-O MDS-4300
 -  MDS Straight Line Pendulum Weaver Kit, 120VAC
Bug-O MDS-4302
 -  MDS Straight Line Pendulum Weaver Kit, 240VAC
Bug-O MDS-4304
 -  MDS Straight Line Pendulum Weaver Kit, 42VAC
Bug-O MDS-4400
 -  MDS Straight Line Programmable Stitch Kit, 120VAC
Bug-O MDS-4402
 -  MDS Straight Line Programmable Stitch Kit, 240VAC
Bug-O MDS-4404
 -  MDS Straight Line Programmable Stitch Kit, 42VAC
Bug-O MDS-4500
 -  MDS Straight Line Programmable Shape Plasma Cutting Kit, 120VAC
Bug-O MDS-4502
 -  MDS Straight Line Programmable Shape Plasma Cutting Kit, 240VAC
Bug-O MDS-4504
 -  MDS Straight Line Programmable Shape Plasma Cutting Kit, 42VAC
Bug-O MDS-4550
 -  MDS Straight Line Programmable Oxy-Fuel Cutting Kit, 120VAC
Bug-O MDS-4552
 -  MDS Straight Line Programmable Oxy-Fuel Cutting Kit, 240VAC
Bug-O MDS-4554
 -  MDS Straight Line Programmable Oxy-Fuel Cutting Kit, 42VAC
Bug-O MDS-9898
 -  MDS Quick Action Manifold, 3-hose
Burn-thru
 -  A term erroneously used to denote excessive melt-thru or a hole.
Burn-thru weld
 -  A term erroneously used to denote a seam weld or spot weld.
Butt joint
 -  A joint between two members aligned approximately in the same plane.
Butt weld
 -  An erroneous term for a weld in a butt joint.
Buttering
 -  A form of surfacing in which one or more layers of weld metal are deposited on the groove face of one member (for example, a high alloy weld deposit on steel base metal which is to be welded to a dissimilar base metal). The buttering provides a suitable transition weld deposit for subsequent completion of the butt weld.
Button
 -  That part of a weld, including all or part of the nugget, which tears out in the destructive testing of spot, seam, or projection welded specimens.
Carbon arc cutting (CAC)
 -  An arc cutting process in which metals are severed by melting them with the heat of an arc between a carbon electrode and the base metal.
Carbon arc welding (CAW)
 -  An arc welding process which produces coalescence of metals by heating them with an arc between a carbon electrode and the work. No shielding is used. Pressure and filler metal may or may not be used.
Carbon electrode
 -  A non-filler material electrode used in arc welding or cutting, consisting of a carbon or graphite rod, which may be coated with copper or other coatings.
Cascade sequence
 -  A combined longitudinal and buildup sequence during which weld beads are deposited in overlapping layers.
Center of gravity (weld positioning)
 -  The point at which the weldment balances on all axes equally. As the distance increases from the device, more torque is applied to the positioner. The center of gravity changes as the welder adds material and parts to the positioner.
Chain intermittent fillet welding
 -  Two lines of intermittent fillet welds on a joint in which the fillet weld increments on one side are approximately opposite to those on the other side of the joint.
CJP
 -  CJP (complete joint penetration): A condition in a groove weld in which weld metal extends through the entire thickness of the joint
Clad metal
 -  A composite metal containing two or three layers that have been welded together. The welding may have been accomplished by roll welding, arc welding, casting, heavy chemical deposition or heavy electroplating.
Cladding
 -  A relatively thick layer (> 1 mm (0.04 in.)) of material applied by surfacing of the purpose of improved corrosion resistance or other properties. Cladding Systems
Coalescence
 -  The growing together or growth into one body of the materials being welded.
Coating
 -  A relatively thin layer (> 1 mm (0.04 in.)) of material applied by surfacing for the purpose of corrosion prevention, resistance to high temperature scaling, wear resistance, lubrication, or other purposes.
Cobot
 -  an apparatus and method for direct physical interaction between a person and a robotic manipulator controlled by a computer. See Articles:
BotX Welding Cobot
The Cobot Advantage
Coil with support
 -  A filler metal package type consisting of a continuous length of electrode in coil form wound on an internal support which is a simple cylindrical section without flanges.
Coil without support
 -  A filler metal package type consisting of a continuous length of electrode in coil form without an internal support. It is appropriately bound to maintain its shape.
Cold Jet Aero 30 Dry Ice Cleaning System 2A0150-8
 -  HOPPER DRY ICE CAPACITY 30 lb (13.6 kg), FEED RATE 3 lb/min (1.4 kg/min), DIMENSIONS 29 x 17 x 34 in (75 x 43 x 85 cm), WEIGHT 167 lbs (76 kg), BLAST PRESSURE RANGE 20-140 PSI (1.4 - 9.7 bar), with optional pressure regulator; without regulator minimum is 65 PSI / 4.5 bar, POWER Electric
Cold Jet Aero 30LF Dry Ice Cleaning System 2A0166-G2
 -  HOPPER DRY ICE CAPACITY 30 lb (13.6 kg), FEED RATE 1.5 lb/min (0.7 kg/min), DIMENSIONS 29 x 17 x 34 in (75 x 43 x 85 cm), WEIGHT 167 lbs (76 kg), BLAST PRESSURE RANGE 20-140 PSI (1.4 - 9.7 bar), with optional pressure regulator; without regulator minimum is 65 PSI / 4.5 bar, POWER Electric
Cold Jet Aero 40 Dry Ice Cleaning System 2A0161
 -  HOPPER DRY ICE CAPACITY 40 lb (18.2 kg), FEED RATE 0-4 lb/min (0-1.8 kg/min), DIMENSIONS 17 x 36 x 40 in (43 x 91 x 101 cm), WEIGHT 260 lbs (118 kg), BLAST PRESSURE RANGE 20-140 PSI (1.4 - 9.7 bar) with optional pressure regulator; without regulator minimum is 65 PSI (4.5 bar), POWER Electric
Cold Jet Aero 40FP Dry Ice Cleaning System 2A0290-G1-F
 -  HOPPER DRY ICE CAPACITY 40 lb (18.2 kg), FEED RATE 0-4.5 lbs/min (0-2 kg/min), DIMENSIONS 36 x 20 x 40 in (91 x 51 x 102 cm), WEIGHT 257 lbs (117 kg), AIR CONSUMPTION 50-165 CFM (1.4 - 4.7 m3/min) at 80 PSI (5.5 bar), BLAST PRESSURE RANGE 20-250 psi (1.4-17.2 bar), POWER 1/4 HP, AC Motor, 1,750 RPM
Cold Jet Aero 80 Dry Ice Cleaning System 2A0162
 -  HOPPER DRY ICE CAPACITY 80 lb (36.2 kg), FEED RATE 0-7 lb/min (0-3.2 kg/min), DIMENSIONS 20 x 43 x 46 in (52 x 109 x 118 cm), WEIGHT 400 lbs (182 kg), BLAST PRESSURE RANGE 20-140 PSI (1.4 - 9.7 bar) with optional pressure regulator; without regulator minimum is 65 PSI (4.5 bar), POWER Electric
Cold Jet Aero 80DX Dry Ice Cleaning System 2A0163-G1
 -  HOPPER DRY ICE CAPACITY 80 lb (36.2 kg), TILT OUT HOPPER, FEED RATE 0-7 lb/min (0-3.2 kg/min), DIMENSIONS 20 x 43 x 46 in (52 x 109 x 118 cm), WEIGHT 400 lbs (182 kg), BLAST PRESSURE RANGE 20-140 PSI (1.4 - 9.7 bar) with optional pressure regulator; without regulator minimum is 65 PSI (4.5 bar), POWER Electric
Cold Jet Aero 80FP Dry Ice Cleaning System 2A0292-G1-F
 -  HOPPER DRY ICE CAPACITY 80 lb (36.4 kg), FEED RATE 0-7 lb/min (0-3.2 kg/min), DIMENSIONS 43 x 20 x 46 in (109 x 52 x 118 cm), WEIGHT 389 lb (176 kg), AIR CONSUMPTION 50-165 CFM (1.4 - 4.7 m3/min) at 80 PSI (5.5 bar) , BLAST PRESSURE RANGE 20-300 psi (1.4-20.7 bar), POWER 1/2 HP, AC Motor, 1,750 RPM
Cold Jet Aero 80HP Dry Ice Cleaning System 2A0164-G1
 -  HOPPER DRY ICE CAPACITY 80 lb (36.2 kg), TILT OUT HOPPER, FEED RATE 0-7 lb/min (0-3.2 kg/min), DIMENSIONS 20 x 43 x 46 in (52 x 109 x 118 cm), WEIGHT 400 lbs (182 kg), BLAST PRESSURE RANGE 20-300 PSI (1.4 - 20.7 bar) with optional pressure regulator; without regulator minimum is 65 PSI (4.5 bar), POWER Electric
Cold Jet Aero C100 Dry Ice Cleaning System 2A0155-D
 -  HOPPER DRY ICE CAPACITY 100 lb (45.5 kg), FEED RATE 0-7 lb/min (0-3.2 kg/min), DIMENSIONS 15 x 31 x 45 in (38 x 79 x 114 cm), WEIGHT 250 lbs (114 kg), BLAST PRESSURE RANGE 20-140 PSI (1.4 - 9.7 bar) with optional pressure regulator; without regulator minimum is 65 PSI (4.5 bar), POWER Pneumatic
Cold Jet Aero Dry Ice Cleaning System
 -  HOPPER DRY ICE CAPACITY 40 lb (18.2 kg), FEED RATE 0-3 lb/min (0-1.4 kg/min), DIMENSIONS 36 x 20 x 40 in (91 x 51 x 102 cm), WEIGHT 223 lb (101 kg), BLAST PRESSURE RANGE 65-140 psi (20 psi if regulated)
Collaborative Robot
 -  A robotic system that is designed to work in tandem with a human operator. The BotX Welder is an example of a collaborative welding robot.
Complete fusion
 -  Fusion which has occurred over the entire base material surfaces intended for welding, and between all layers and passes.
Complete joint penetration
 -  Joint penetration in which the weld metal completely fills the groove and is fused to the base metal throughout its total thickness.
Composite electrode
 -  Any of a number of multicomponent filler metal electrodes in various physical forms such as stranded wires, tubes, and covered wire.
Composite joint
 -  A joint produced by welding used in conjunction with a non-welding process.
Concave fillet weld
 -  A fillet weld having a concave face.
Concave root surface
 -  A root surface which is concave.
Concavity
 -  The maximum distance from the face of a concave fillet weld perpendicular to a line joining the toes.
Concurrent heating
 -  The application of supplemental heat to a structure during a welding or cutting operation.
Constant Current (CC) Welding Machine
 -  These welding machines have limited maximum short circuit current. They have a negative volt-amp curve and are often referred to as "droopers."
Constant speed wire feeders
 -  A constant speed wire feeder is used only with a constant voltage (CV) power source. This arrangement requires an extra control cord between the wire feeder and the power source but that allows operators to control both voltage and wire feed speed (amperage) at the feeder, a big benefit when working remotely. Further, voltage and amperage values remain constant unless manually adjusted, and both can be adjusted independently of each other. When welding procedures specify wire feed speed and voltage (instead of amps and volts), a constant speed feeder may be your best choice. When you set the controls for a wire feed speed of 250 inches per minute, that's what the system delivers. Wire feed speed does not vary like it does with a voltage sensing system. Both VS and RC feeders have digital meters, typically an option, make setting e xact parameters easier. The meters display wire feed speed or volts (one at a time) or they can be set to display amps or wire feed speed (one at a time).
Constant Voltage (CV), Constant Potential (CP) Welding Machine
 -  This type of welding machine output maintains a relatively stable, consistent voltage regardless of the amperage output. It results in a relatively flat volt-amp curve.
Consumable guide electro slag welding
 -  A method of electroslag welding in which filler metal is supplied by an electrode and its guiding member.
Consumable insert
 -  Preplaced filler metal which is completely fused into the root of the joint and becomes part of the weld.
Contact tube
 -  A device which transfers current to a continuous electrode.
Continuous sequence
 -  A longitudinal sequence in which each pass is made continuously from one end of the joint to the other.
Continuous weld
 -  A weld extends continuously from one end of a joint to the other. Where the joint is essentially circular, it extends completely around the joint.
Control Module Input Cable v 14-pin MS-type and Twist Mate™ K493-10
 -  Used with K487-25 Magnum SG Spool Gun to connect K488 Control Module to Lincoln CV power sources having 14-pin control cable connections.
Convex fillet weld
 -  A fillet weld having a convex face.
Convex root surface.
 -  A root surface which is convex.
Convexity
 -  The maximum distance from the face of a convex fillet weld perpendicular to a line joining the toes.
Corner joint
 -  A joint between two members located approximately at right angles to each other.
Corner-flange weld
 -  A flange weld with only one member flanged at the location of welding.
Coupling hub
 -  A coupling hub that is the connecting part to be attached either to the driver shaft end or to the driven equipment shaft end of a rotating drive. See Coupling Hub Maintenance Article
Cover lens (eye protection)
 -  A round cover plate.
Cover plate (eye protection)
 -  A removable pane or colorless glass, plastic-coated glass, or plastic that covers the filter plate and protects it from weld spatter, pitting, or scratching when used in a helmet, hood or goggle.
Covered electrode
 -  A composite filler metal electrode consisting of a core of a bare electrode or metal cored electrode to which a covering sufficient to provide a slag layer on the weld metal has been applied. The covering may contain materials providing such functions as shielding from the atmosphere, deoxidation, and arc stabilization and can serve as a source of metallic additions to the weld.
Crack
 -  A fracture-type discontinuity characterized by a sharp tip and high ratio to length and width to opening displacement.
Crater
 -  In arc welding, a depression at the termination of a weld bead or in the molten weld pool.
Crater crack
 -  A crack in the crater of a weld bead.
Current
 -  Another name for amperage. The amount of electricity flowing past a point in a conductor every second.
CV
 -  Conventional mode for MIG welding. This general purpose MIG welding mode uses constant voltage for short arc, globular and spray transfer.
Cylinder
 -  A portable container used for transportation and storage of a compressed gas.
Defect
 -  A discontinuity or discontinuities which by nature or accumulated effect (for example, total crack length) render a part or product unable to meet minimum applicable acceptance standards or specifications. This terms designates reject ability.
Defective weld
 -  A weld containing one or more defects.
Deposited metal
 -  Filler metal that has been added during a welding operation.
Deposition efficiency (arc welding)
 -  The ratio of the weight of deposited metal to the net weight of filler metal consumed, exclusive of stubs.
Depth of fusion
 -  The distance that fusion extends into the base metal or previous pass from the surface melted during welding.
Destructive Testing (DT)
 -  A method of testing a constructed or welded piece where the piece is destroyed while being tested to the point of failure. See Weld Quality Assurance
Dig
 -  Also called Arc Control. Gives a power source variable additional amperage during low voltage (short arc length) conditions while welding. Helps avoid “sticking” stick electrodes when a short arc length is used.
Dilution
 -  The change in chemical composition of a welding filler material caused by the admixture of the base material or previously deposited weld material in the deposited weld bead. It is normally measured by the percentage or base material or previously deposited weld material in the weld bead.
Direct current electrode negative
 -  The arrangement of direct current arc welding leads in which the work is the positive pole and the electrode is the negative pole of the welding arc.
Direct current electrode positive
 -  The arrangement of direct current arc welding leads in which the work is the negative pole and the electrode is the positive pole of the welding arc.
Discontinuity
 -  An interruption of the typical structure of a weldment, such as a lack of homogeneity in the mechanical, metallurgical, or physical characteristics of the material or weldment. A discontinuity is not necessarily a defect.
Double-welded joint
 -  In arc and oxyfuel gas welding, any joint welded from both sides.
Drag angle
 -  The travel angle when the electrode is pointing backward. This angle can be used to define the position of welding guns, welding torches, high energy beams, welding rods, thermal cutting and thermal spraying guns.
Drop-thru
 -  An undesirable sagging or surface irregularity, usually encountered when brazing or welding near the solidus of the base metal caused by overheating with rapid diffusion or alloying between the filler metal and the base metal.
Drum
 -  A filler metal package type consisting of a continuous length of electrode wound or coiled within an enclosed cylindrical container.
Dual Fuel Generators
 -  Power generators which can run on 2 different fuels such as diesel or natural gas. Dual Fuel Generators can be more fuel efficient than other models and offer flexibility.
Dustless Blasting
 -  Dustless wet media blasting is an excellentalternative to sandblasting. Sandblasting can create a lot of dust which requires specialized containment measures. Dustless blasting refers to blast cleaning methods like wet media blasting which don't produce any dust cloud. Any time a surface is cleaned with any blast cleaning method, there will always be some residual material (paint, rust, dirt etc) which is stripped away. The dust referred to in dustless blasting is that which comes from the blasting media itself ie. sand. The Clearblast 150 is a good example of a dustless blasting machine.
Duty cycle
 -  The percentage of time during an arbitrary test period, usually 10 min. during which a power supply can be operated at its rated output without overloading.
Dye Penetrant Testing
 -  Using dye to detect surface defects in a weld. See Weld Quality Assurance
Eccentricity (weld positioning)
 -  The distance from the weldment center of gravity to its rotation axis in the case of an unbalanced load.
Edge flange weld
 -  A flange weld with two members flanged at the location of welding.
Edge joint
 -  A joint between the edges of two or more parallel or nearly parallel members.
Edge preparation
 -  The surface prepared on the edge of a member for welding.
Edge weld
 -  A weld in an edge point.
Effective length of weld
 -  The length of weld throughout which the correctly proportioned cross section exists. In a curved weld, it shall be measured along the axis of the weld.
Effective throat
 -  The minimum distance from the root of a weld to its face less any reinforcement.
Effective throat
 -  The minimum distance minus any reinforcement from the root of a weld to its face.
Electrode extension (GMAW, FCAW, SAW)
 -  The length of unmelted electrode extending beyond the end of the contact tube during welding.
Electrode holder
 -  A device used for mechanically holding the electrode while conducting current to it.
Electrode lead
 -  The electrical conductor between the source of arc welding current and the electrode holder.
Electroslag welding (ESW)
 -  A welding process producing coalescence of metals with molten slag which melts the filler metal and the surfaces of the work to be welded. The molten weld pool is shielded by this slag which moves along the full cross-section of the joint as welding progresses. The process is initiated by an arc which heats the slag. The arc is then extinguished and the conductive slag is maintained in a molten condition by its resistance to electric current passing between the electrode and the work.
Electroslag welding electrode
 -  A filler metal component of the welding circuit through which current is conducted between the electrode guiding member and the molten slag. Note: Bare electrodes and composite electrodes as defined under “arc welding electrode” are used for electroslag welding. A consumable guide may also be used as part of the electroslag welding electrode system.
Emissive electrode
 -  A filler metal electrode consisting of a core of a bare electrode or a composite electrode to which a very light coating has been applied to produce a stable arc.
Exhaust booth
 -  A mechanically ventilated, semi-enclosed area in which an air flow across the work area is used to remove fumes, gases, and material particles.
Face of weld
 -  The exposed surface of a weld on the side from which welding was done.
Face reinforcement
 -  Reinforcement of weld at the side of the joint from which welding was done.
Face shield (eye protection)
 -  A device positioned in front of the eyes and a portion of, or all of, the face, whose predominant function is protection of the eyes and face.
Faying surface
 -  That mating surface of a member which is in contact or in close proximity with another member to which it is to be joined.
Feed rate
 -  The rate at which material passes through a gun in a unit of times.
Ferrite number
 -  An arbitrary, standardized value designating the ferrite content of an austenitic stainless steel weld metal. It should be used in place of percent ferrite or volume percent ferrite on a direct one to one replacement basis.
Filled weld
 -  The position in which welding is performed on the upper side of an approximately horizontal plane and the face of the weld lies in an approximately vertical plane.
Filler metal
 -  The metal (material) to be added in making a welded, brazed, or soldered joint.
Fillet weld
 -  A weld of approximately triangular cross section joining two surfaces approximately at right angles to each other in a lap joint, T-joint or corner joint.
Fillet weld (size of weld)
 -  For equal leg fillet welds, the leg lengths of the largest isoceles right triangle which can be inscribed within the fillet weld cross section. For unequal leg fillet welds, the leg lengths of the largest right triangle which can be inscribed within the fillet weld cross section. Note: When one member makes an angle with the other member, greater that 105 degrees, the leg length (size) is of less significance than the effective throat which is the controlling factor for the strength of a weld.
Filter lens (eye protection)
 -  A round filter plate.
Filter plate (eye protection)
 -  An optical material which protects the eyes against excessive ultraviolet, infrared, and visible radiation.
Fines
 -  Any or all material finer than a particular mesh under consideration.
Fissure
 -  A small crack-like discontinuity with only slight separation (opening displacement) of the fracture surfaces. The prefixes macro or micro indicate relative size.
Fixed Automation
 -  Automated, electronically controlled welding system for simple, straight or circular welds.
Fixture
 -  A device designed to hold parts to be joined in proper relation to each other
Flange weld
 -  A weld made on the edges of two or more members to be joined, at least one of which is flanged.
Flange weld (size of weld)
 -  The weld metal thickness measured at the root of the weld.
Flat position
 -  The welding position used to weld from the upper side of the joint: the face of the weld is approximately horizontal.
Flaw
 -  A near synonym for discontinuity but with an undesirable connotation.
Flexible Automation
 -  Automated, robotically controlled welding system for complex shapes and applications where welding paths require torch-angle manipulation.
Flowability
 -  The ability of molten filler metal to flow or spread over a metal surface.
Flux
 -  Material used to prevent, dissolve, or facilitate removal of oxides and other undesirable surface substances.
Flux cored arc welding-electrogas
 -  A variation of the flux cored arc welding process in which molding shoes are used to confine the molten weld metal for vertical position welding. Additional shielding may or may not be obtained from an externally supplied gas or gas mixture.
Flux cored electrode
 -  A composition filler metal electrode consisting of a metal tube or other hollow configuration containing ingredients to provide such functions as shielding atmosphere, deoxidation, arc stabilization and slag formation. Alloying materials may be included in the core. External shielding may or may not be used.
Flux-Cored Arc Welding (FCAW)
 -  Arc welding process which uses a spooled, tubular filler metal electrode consumable enveloping flux. Shielding is obtained from the flux contained within the electrode core. Additional externally supplied shielding gas can also be used. Can work as well as stick on dirty or rusty material. Out-of-position welding, Deep penetration for welding thick sections, Increased metal deposition rate
Forehand welding
 -  A welding technique in which the welding torch or gun is directed toward the progress of welding.
Full fillet weld
 -  A filler weld whose size is equal to the thickness of the thinner member joined.
Fusion
 -  The melting together of filler metal and base metal (substrate), or of base metal only, which results in coalescence.
Fusion face
 -  A surface of the base metal which will be melted during welding.
Fusion welding
 -  Any welding process or method which uses fusion to complete the weld.
Fusion zone
 -  The area of base metal melted as determined on the cross section of a weld.
FX500XL
 -  A multi-process welding power source with CrossLinc Technology. FX500XL
Gas metal arc welding (GMAW)
 -  An arc welding process which produces coalescence of metals by heating them with an arc between a continuous filler metal (consumable) electrode and the work. Shielding is obtained entirely from an externally supplied gas or gas mixture. Some methods of this process are called MIG or CO2 welding (nonpreferred terms). See > MIG welding equipmentVideo > MIG (GMAW) welding
Gas metal arc welding short circuiting arc (GMAW-S)
 -  A variation of the gas metal arc welding process in which the consumable electrode is deposited during repeated short circuits.
Gas metal arc welding-electrogas (GMAW-EG)
 -  A variation of the gas metal arc welding process using molding shoes to confine the molten weld metal for vertical position welding.
Gas metal arc welding-pulsed arc (GMAW-P)
 -  A variation of the gas metal arc welding process in which the current is pulsed. See also pulsed power welding.
Gas shielding arc welding
 -  A general term used to describe gas metal arc welding, gas tungsten arc welding, and flux cored arc welding when gas shielding is employed.
Gas tungsten arc welding (GTAW)
 -  An arc welding process which produces coalescence of metals by heating them with an arc between a tungsten (non-consumable) electrode and the work. Shielding is obtained from a gas or gas mixture. Pressure may or may not be used and filler metal may or may not be used. (This process has sometimes been called TIG welding, a nonpreferred term.)
Gas tungsten arc welding-pulsed arc (GTAW-P)
 -  A variation of the gas tungsten arc welding process in which the current is pulsed.
Globular transfer (arc welding)
 -  A type of metal transfer in which molten filler metal is transferred across the arc in large droplets.
Goat
 -  Nickname for Lincoln Electric's LT7 submerged arc tractor
Gouging
 -  The forming of a bevel or groove by material removal. Learn about the Air Carbon Arc Gouging Process
Groove
 -  An opening or channel in the surface of a part or between two components which provides space to contain a weld.
Groove angle
 -  The total included angle of the groove between parts to be joined by a groove weld.
Groove face
 -  That surface of a member included in the groove.
Groove radius
 -  The radius used to form the shape of a J- or U-groove weld joint.
Groove type
 -  The geometric configuration of a groove.
Groove weld
 -  A weld made in the groove between two members to be joined. The standard types of groove welds are double-bevel-groove weld, double-flare-bevel-groove weld, double-flare-V-groove weld, double-J-groove weld, double-U-groove weld, double-V-groove weld single-bevel-groove weld, single-flare-bevel-groove weld, single-flare-V-groove weld single-J-groove weld, single-U-groove weld, single-V-groove weld, square-groove weld
Groove weld (size of weld)
 -  The joint penetration (depth of bevel plus the root penetration when specified). The size of a groove weld and its effective throat are one and the same.
Ground Connection
 -  A safety connection from a welding machine frame to the earth. See Workpiece Connection for the difference between work connection and ground connection.
Ground Lead
 -  When referring to the connection from the welding machine to the work, see preferred term Workpiece Lead.
H&S Tool BG44 Boiler Gun
 -  Working Range: 0.875 in. ID – 5 in. OD (22.2 ID – 127 OD mm), Radial Tool Clearance: 1.312 in. (33.3 mm), Head Width: 2.625 in. (66.7 mm)
Power: Pneumatic (1.3 HP / 0.97 kW), Low-velocity (LV) 55 RPM, High-velocity (HV) 110 RPM
Electric (1.5 HP / 1.1 kW)
H&S Tool Model AFC-12 Split-Frame Clamshell, Part Number AFC12Dk-R
 -  Nominal Pipe Size 6-12 inches, Tripper – 4 inch, Extension Pad - ½, 1, & 2 inches, Tool Slide – 3-inch, Air Motor – 4800, Includes complete machine assembly with DEFENDER kit, extension pads, tool slide assembly, air motor, tool kit, Clamshell box, and operating manual.
H&S Tool Model AFC-16 Split-Frame Clamshell, Part Number AFC16Dk-R
 -  Nominal Pipe Size 8-16 inches, Tripper – 4 inch, Extension Pad - ½, 1, & 2 inches, Tool Slide – 3-inch, Air Motor – 4800, Includes complete machine assembly with DEFENDER kit, extension pads, tool slide assembly, air motor, tool kit, Clamshell box, and operating manual.
H&S Tool Model AFC-8 Split-Frame Clamshell, Part Number AFC8Dk-R
 -  Nominal Pipe Size 3-8 inches, Tripper – 4 inch, Extension Pad - ½ & 1 inches, Tool Slide – 2-inch, Air Motor – 3800, Includes complete machine assembly with DEFENDER kit, extension pads, tool slide assembly, air motor, tool kit, Clamshell box, and operating manual.
H&S Tool PB12 Power Beveler
 -  Working Range: 3 in. ID – 14 in. OD (76.2 ID – 355.6 OD mm), Radial Tool Clearance: 14 in. (355.6 mm), Travel: 4.5 in. (114.3 mm)
Power: Pneumatic (3.0 HP / 2.2 kW), Electric (2.5 HP / 1.9 kW), or Hydraulic (5.36 HP / 4.0 kW), Speed: 0 – 18 RPM, 0 – 32 RPM, 0 – 40 RPM
H&S Tool PB8 Power Beveler
 -  Working Range: 2 in. ID – 8.625 in. OD (50.8 ID – 219.1 OD mm), Radial Tool Clearance: 9 in. (228.6 mm), Travel: 3.5 in. (88.9 mm)
Power: Pneumatic (3.0 HP / 2.2 kW), Electric (2.5 HP / 1.9 kW), or Hydraulic (5.36 HP / 4.0 kW), Speed: 0 – 22 RPM, 0 – 37 RPM, 0 – 40 RPM
Hand shield
 -  A protective device, used in arc welding, for shielding the eyes, face and neck. A hand shield is equipped with a suitable filter plate and is designed to be held by the hand.
Hard facing
 -  A particular form of surfacing in which a coating or cladding is applied to a substrate for the main purpose of reducing wear or loss of material by abrasion, impact, erosion, galling, and cavitation. Article: Strengthening Metal Parts with Hardfacing
Heat-affected zone (HAZ)
 -  That portion of the base metal which has not been melted, but whose mechanical properties or microstructure have been already altered by the heat of welding, brazing, soldering, or cutting.
Helmet (eye protection)
 -  A protection device, used in arc welding, for shielding the eyes, face, and neck. A helmet is equipped with a suitable filter plate and is designed to be worn on the head.
Hertz
 -  Hertz is often referred to as "cycles per second." In the United States, the frequency or directional change of alternating current is usually 60 hertz.
High Frequency
 -  Covers the entire frequency spectrum above 50,000 Hz. Used in TIG welding for arc ignition and stabilization.
HIPOWER 1200 I-Line Panel
 -  1200A 45" I-Line rated for 600VAC, Aluminum enclosure, carbon steel protective frame, certified by UL under UL1640 Portable Power Distribution Panel. CSA Standard for safety for Industrial Control Equipment, CAN/CSA C22.2 No.14 (Canada) tested by ETL.
HIPOWER 600A Mini I-Line Panel
 -  600A 27" I-Line rated for 600VAC, Aluminum enclosure, stainless steel protective frame with two 10" casters, certified by UL under UL1640 Portable Power Distribution Panel. CSA Standard for safety for Industrial Control Equipment, CAN/CSA C22.2 No.14 (Canada) tested by ETL.
Horizontal fixed position (pipe welding)
 -  In pipe welding the position of a pipe joint in which the axis of the pipe is approximately horizontal and the pipe is not rotated during welding.
Horizontal rolled position (pipe welding)
 -  The position of a pipe joint in which the axis of the pipe is approximately horizontal, and welding is performed in the flat position by rotating the pipe.
Hot-wire TIG (Tip TIG)
 -  A TIG (GTAW) welding process were the welding wire receives a mechanically applied vibratory effect and electrical current before entering the weld pool. See TIG Pipe Cladding Systems
How to Correctly Size a Generator
Hydrogen Induced Cracking (HIC)
 -  HIC results from the permeation of materials by high levels of ambient hydrogen during welding. See Post Weld Heat Treatment Article
Inadequate joint penetration
 -  Joint penetration which is less than that specified.
Incomplete fusion
 -  Fusion which is less than complete.
Indentation
 -  In a spot, seam, or projection weld, the depression on the exterior surface or surfaces of the base metal.
Induction heating
 -  Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, through heat generated in the object by eddy currents. See induction heating systems
Inert gas
 -  A gas which does not normally combine chemically with the base metal or filler metal. See also protective atmosphere.
Infrared radiation
 -  Electromagnetic energy with wavelengths from 770 to 12000 nanometers.
Intergranular penetration
 -  The penetration of a filler metal along the grain boundaries of a base metal.
Intermittent weld
 -  A weld in which the continuity is broken by recurring unwelded spaces.
Interpass temperature
 -  In a multiple-pass weld, the temperature (minimum or maximum as specified) of the deposited weld metal before the next pass is started.
Inverter Welding Power Source
 -  Power source that increases the frequency of the incoming primary power, thus providing for a smaller size machine and improved electrical characteristics for welding, such as faster response time and more control. Inverters are more portable and lighter weight than traditional transformer-rectifiers, making them easier to maneuver around the job site. In addition, inverters offer high-quality, multi-process welding capabilities so that one machine can handle Stick, MIG, TIG, FCAW, arc gouging and even pulsing.
Inverters can also save money in energy costs over traditional-type power sources since:
Greater transformer efficiencies are realized through the use of ferrite cores in the inverter's power transformer. This reduces the current losses resulting in lower idle currents in the supply conductors.
The inverter transformer coils are physically smaller than common transformers. A smaller coil translates to less wire wrapping around the core - less wire means fewer losses and greater efficiency.
The inverter's power electronic components have been carefully designed to reduce losses and extend operating life.
Many inverters use a copper conductor. Copper has higher thermal and electrical conductivity compared to aluminum, which will minimize losses and maximize efficiency.
Operating at higher frequencies than conventional welders, inverters require less output inductance for smooth operation. The energy needed for stick welding or for globular transfer welding processes is stored in capacitors allowing for smaller output chokes.
The compact design and relatively small physical size of an inverter welder means shorter leads and cables (or even direct connections) between power components. Shorter current paths translate to lower resistances and better efficiencies.
Because the inverter is designed to inherently have low losses, smaller cooling fans are required. This means less power is needed for moving cooling air and, again, greater efficiency.
The smaller size of the components inside the inverter machine translate into less heat to dissipate and again, greater efficiency
Jimmy Jammer
 -  Semi-Automatic Welding System composed of a manipulator, weld oscillator (oscillating welding torch), cross slide, positioner and turning rolls. The semi-automatic weld oscillator controls the positioners and turning rolls.
Joined buildup sequence
 -  The order in which the weld beads of a multiple-pass weld are deposited with respect to the cross section of the joint.
Joint
 -  The junction of members or the edges of members which are to be joined or have been joined.
Joint clearance
 -  The distance between the faying surfaces of a joint. In brazing this distance is referred to as that which is present either before brazing, at the brazing temperature, or after brazing is completed.
Joint design
 -  The joint geometry together with the required dimensions of the welded joint.
Joint efficiency
 -  The ratio of the strength of a joint to the strength of the base metal (expressed in percent).
Joint geometry
 -  The shape and dimensions of a joint in cross section prior to welding.
Joint penetration
 -  The minimum depth a groove or flange weld extends from its face into a joint, exclusive of reinforcement. Joint penetration may include root penetration.
Joint welding procedure
 -  The materials, detailed methods and practices employed in the welding of a particular joint.
Kerf
 -  The width of the cut produced during a cutting process.
Keyhole TIG
 -  A high speed, full penetration GTAW welding technology that offers enormous productivity, cost and quality advantages over existing processes in stainless steels and other corrosion resistant materials. It requires no edge beveling, uses as little as 10 percent of the gas normally required, and produces highly repeatable, X-ray quality welds with superb cap and root aesthetics.
Kilogram (kg)
 -  The kilogram or kilogramme (SI unit symbol: kg) is the base unit of mass in the International System of Units (SI). 1 Kilogram = 2.2 pounds | 1 pound = 0.453592 Kilograms.
kVA (1,000 volt-amps)
 -  A kVA is 1,000 volt-amps. It's what you get when you multiply the voltage (the force that moves electrons around a circuit) by the amps (electrical current). Kilovolt-amps measure what's called the 'apparent power' of a generator. This is different from kilowatts (kW), which measure the 'true power'. kW is the amount of 'actual power' an electrical system has. This shows you how much power is being converted into useful, working output. kVA, on the other hand is the measure of 'apparent' power. If kW is how much power you can work with, kVA tells you how much is being used in the system overall.
kW (Kilowatts)
 -  A kilowatt is simply 1,000 watts, which is a measure of power. Primary kW is the actual power used by a power source when it is producing its rated output. Secondary kW is the actual power output of a welding power source. Kilowatts are found by taking volts times amps divided by 1,000 and taking into account any power factor.
Lap joint
 -  A joint between two overlapping members.
Layer
 -  A stratum of weld metal or surfacing material. The layer may consist of one or more weld beads laid side by side.
Leg of a fillet weld
 -  The distance from the root of the joint to the toe of the fillet weld.
Lightly coated electrode
 -  A filler metal electrode consisting of a metal wire with a light coating applied subsequent to the drawing operation, primarily for stabilizing the arc.
Lincoln 4C® Lens Technology
 -  4C® lens technology broadens the color range and hues which can be seen in both light and dark states. This eliminates imperfections and color saturation to create the clearest view of the base material, arc and puddle.
Lincoln AC Aluminum Pulse
 -  With the help of the Lincoln Electric Power Wave® Advanced Module, GMAW aluminum welding results can be improved over traditional DC positive aluminum MIG welding. By switching the polarity of the arc, heat input is reduced and deposition rates are enhanced.
Lincoln AC Auto-Balance®
 -  AC Auto Balance® automatically provides for the optimal mix of cleaning and penetration for welding on aluminum. When welding thicker material requiring increased penetration, or when requiring increased cleaning action to break through heavy oxide layers, bypass AC Auto Balance and adjust manually for full control.
Lincoln AC-STT®
 -  Based off Lincoln Electric’s patented STT® process, AC-STT® combines the proven spatter reducing technology of the STT® waveform with the balanced heat-input characteristics of AC GMAW, producing an advanced short circuit process optimized specifically for thin-gauge materials.
Lincoln AC180-S K1137 Electric Welder Legacy
 -  180A AC @ 25V, 20% duty cycle, 44-75A current range, 208/230/1/60
Lincoln AC225-S K1170 Electric Welder Legacy
 -  225A AC @25V, 20% duty cycle, 40-225A current range, 208/230/1/60, 4610.1
Lincoln ArcFX™ GUI Technology
 -  Lincoln Electric's patented ArcFX™ technology provides instant graphical feedback on the user interface, illustrating how Wire Feed Speed and Voltage affect the weld outcome. The memory capability enables users to load and save weld settings, while its adjustable features allow for a customized welding session.
Lincoln Bulldog 5500 K2708-2 Engine Driven Welder (Kohler) CC AC
 -  RATED OUTPUT 100A AC/25V/60%, 125A AC/20V/30%, OUTPUT RANGE 70-140A, GENERATOR OUTPUT 5500 watts peak, 4000 watts continuous, ENGINE Kohler® CH395, 8.9HP @ 3600 RPM, 1 cylinder, NET WEIGHT 198.00 (89.81 kg), AC Welding with up to 1/8 in. (3.2 mm) Stick Electrode, 5,500 Watts Surge (4,000 Watts Continuous) AC Generator Power
Lincoln Cable View™ Technology
 -  Powered by patented Cable View™ Technology, Lincoln's PIPEFAB™ welding system continually monitors cable inductance and adjusts the waveform to maintain consistent arc performance with long or coiled cable runs up to 65ft (or inductance levels up to 45 µH).
• Consistent arc performance with no sense lead, even in long or coiled cable runs
• Warning notification if inductance is outside of performance threshold
Lincoln CheckPoint™
 -  Lincoln Electric's CheckPoint is a full production cloud-based monitoring solution that delivers precise information for maximizing welding productivity and performance. CheckPoint provides full visibility of your welding operations faster, cleaner and more efficiently. From real-time dashboard snapshots to in-depth weld analytics, CheckPoint's framework is built to provide essential welding data the way you need it for whatever your role may have.
Lincoln Chopper Technology
 -  Lincoln Electric’s Chopper Technology is the simplest form of high frequency power conversion. A chopper is composed of a transistor switch and a diode. DC input power is “chopped” to a lower output voltage, and a choke is placed in the path of the output to smooth current variation. Choppers were developed for engine driven welders to offer the same control over the welding arc as the inverter machines. This allows more consistent arc performance across product lines. Choppers are ideal for the customer searching for an inexpensive option for low cost, high quality arc performance.
Lincoln Cougar Push-Pull Guns
 -  K2704-2 Cougar Push-Pull Welding Gun, Air-Cooled, 25ft K2704-3 Cougar Push-Pull Welding Gun, Air-Cooled, 50ft
Lincoln CrossLinc
 -  A technology developed by Lincoln Electric that provides the ability for the operator to adjust voltage at the wirefeeder without the need for an additional control cable or wireless remote. Voltage changes are communicated from the wire feeder to the power source using existing welding cables.
Lincoln CrossLinc Technology Enabled Equipment
 -  Lincoln Flextec 350X Construction, Flextec 350X Standard, Flextec 500X, Flextec 650X, CrossLinc Remote, LN25X wire feeder, Activ8A wire feeder, Ranger 330MPX, Red-D-Arc FX360XL, FX500XL, FX650XL, GX330XL, LN25X wire feeder
Lincoln Dual Maverick 200/200X (Kubota) K4382-1 Dual Operator Engine Driven Welder
 -  A high speed, diesel engine-driven welder/generator capable of dual or single operator DC multi-purpose welding. The machine features 120/240 VAC single phase auxiliary power, a user interface screen for advanced features, and patented CrossLinc® and Chopper Technology®. Powered by a 24.8 hp Kubota® D902 diesel engine.
Lincoln Dual Maverick 200/200X (Kubota) Ready-Pak 1 K4382-1-RP1 Dual Operator Engine Driven Welder
 -  A high speed, diesel engine-driven welder/generator capable of dual or single operator DC multi-purpose welding. The machine features 120/240 VAC single phase auxiliary power, a user interface screen for advanced features, and patented CrossLinc® and Chopper Technology®. Powered by a 24.8 hp Kubota® D902 diesel engine. The Ready-Pak® 1 includes the welder, trailer, fender and light kit, cable rack, welding cables, ground clamps, and electrode holder in one preassembled package.
Lincoln Dual Maverick 200/200X (Kubota) Ready-Pak 3 K4382-1-RP3 Dual Operator Engine Driven Welder
 -  A high speed, diesel engine-driven welder/generator capable of dual or single operator DC multi-purpose welding. The machine features 120/240 VAC single phase auxiliary power, a user interface screen for advanced features, and patented CrossLinc® and Chopper Technology®. Powered by a 24.8 hp Kubota® D902 diesel engine. The Ready-Pak® 3 includes the welder, trailer, fender and light kit, and cable rack in one preassembled package.
Lincoln Dual Maverick 450 (Perkins) K4381-1 International Dual Operator Engine Driven Welder
 -  Not Available in the US, Canada, or EU. A high speed, diesel engine-driven welder/generator capable of dual or single operator DC multi-purpose welding. The machine features 220 VAC single phase and 380 VAC three phase auxiliary power, a user interface screen for advanced features, and patented Chopper Technology®. Powered by a 26.4 hp Perkins® D403-11 diesel engine.
Lincoln Flextec 350X K4271-1 Construction Multi-Process Welder
 -  SMAW, GTAW, GMAW, FCAW, CAC-A
Lincoln Flextec 350X K4272-1 Standard Multi-Process Welder
 -  SMAW, GTAW, GMAW, FCAW, CAC-A
Lincoln Flextec 350X K4273-1 PowerConnect Multi-Process Welder
 -  SMAW, GTAW, GMAW, GMAW-P, FCAW, CAC-A, PowerConnect Technology: 200-600V/1/3
Lincoln Flextec 350X K4283-1 Construction CE Multi-Process Welder
 -  SMAW, GTAW, GMAW, FCAW, CAC-A
Lincoln Flextec 350X K4284-1 Standard CE Multi-Process Welder
 -  SMAW, GTAW, GMAW, FCAW, CAC-A
Lincoln Idealarc TIG300 K1174 Electric Welder
 -  300A AC at 40V @ 60% duty cycle, 2-375A AC, high-frequency control, 230/440/1/60, K1176 - 50 cycle version 4608.1
Lincoln Idealarc TIG300/300 K1175 Electric Welder
 -  300A AC/DC at 40V @ 60% duty cycle, 2-375A AC/DC, high-frequency control, 230/440/1/60, K1177 - 50 cycle version 4608.1
Lincoln Idealarc TM300 K1103 Electric Welder
 -  300A AC at 40V @ 60% duty cycle, 30-450A AC, 230/440/1/60, K1111 - 50 cycle version, K1119 - 25 cycle version
Lincoln Idealarc TM300/300 K1104 Electric Welder
 -  300A AC/DC at 40V @ 60% duty cycle, 30-450A AC, 45-375A DC, 230/440/1/60, K1112 - 50 cycle version, K1120 - 25 cycle version
Lincoln Idealarc TM400 K1105 Electric Welder
 -  400A AC/DC at 40V @ 60% duty cycle, 40-600A AC, 45-375A DC, 230/440/1/60, K1113 - 50 cycle version
Lincoln Idealarc TM400/400 K1107 Electric Welder
 -  400A AC/DC at 40V @ 60% duty cycle, 40-600A AC, 45-375A DC, 230/440/1/60, K1115 - 50 cycle version
Lincoln Idealarc TM500 K1108 Electric Welder
 -  500A AC at 40V @ 60% duty cycle, 50-750A AC, 230/440/1/60, K1116 - 50 cycle version
Lincoln Idealarc TM500/500 K1110 Electric Welder
 -  500A AC/DC at 40V @ 60% duty cycle, 50-750A AC, 75-625A DC, 230/440/1/60, K1118 - 50 cycle version
Lincoln Idealarc TM650 K1121 Electric Welder
 -  650A AC at 40V @ 60% duty cycle, 50-850A AC, 230/440/1/60
Lincoln Idealarc TM650/650 K1126 Electric Welder
 -  650A AC/DC at 40V @ 60% duty cycle, 50-850A AC, 75-750A DC, 230/440/1/60, 4607.1
Lincoln Invertec STT II K1525-1 Advanced Process Welder Legacy
 -  208/230/460/3/60 input voltage, 225A/29V/60%, 200A/28V/100% current/voltage/duty cycle, 32/30/16A input current, 0-450A peak current, 0-125A background current, 85 OCV max
Lincoln Invertec STT II K1526-1 Advanced Process Welder Legacy
 -  200-208/220-230/380-415/440-460/3/50/60 input voltage, 225A/29V/60%, 200A/28V/100% current/voltage/duty cycle, 33/30/15/17/16A input current, 0-450A peak current, 0-125A background current, 85 OCV max
Lincoln Invertec STT II K1526-2 Advanced Process Welder Legacy
 -  200/208/380/400/415/3/50/60 input voltage, 225A/29V/60%, 200A/28V/100% current/voltage/duty cycle, 36/34/20/19/18A input current, 0-450A peak current, 0-125A background current, 85 OCV max
Lincoln Invertec STT II K1527-1 Advanced Process Welder Legacy
 -  200/220/380/415/440/3/50/60 input voltage, 225A/29V/60%, 200A/28V/100% current/voltage/duty cycle, 36/34/20/19/18A input current, 0-450A peak current, 0-125A background current, 85 OCV max
Lincoln Invertec STT II K1527-2 Advanced Process Welder Legacy
 -  200/208/380/415/400/415/3/50/60 input voltage, 225A/29V/60%, 200A/28V/100% current/voltage/duty cycle, 36/34/20/19/18A input current, 0-450A peak current, 0-125A background current, 85 OCV max
Lincoln Invertec STT II Power Source/LN25 PRO Dual Power Wire Feeder Portable System
 -  Invertec® STT® II (K1525-1), LN-25 PRO Dual Power Model (K2614-6), Control Cable (K1797-10), Drive Roll Kit [KP1696-035S for 0.35 in. (0.9 mm) wire or KP1696-045S for .040-.045 in. (1.0-1.1mm) wire], Magnum® PRO Curve™ 200 Ready-Pak®, 15 ft. (3 m), .035-.045 in. (0.9-1.1 mm) wire diameter with K466-10 Gun Connector Kit, Work Cable and Work Clamp, For more information on the LN-25 PRO Dual Power Wire Feeder refer to Lincoln publication E8.101
Lincoln Inverter Technology
 -  Lincoln inverter-based welding power sources operate at frequencies above 20 kHz, whereas traditional power sources operate at a line frequency of 50 or 60 Hz. Some of the advantages an inverter has are smaller magnetic components (chokes and transformers), higher efficiency, and a fast response to the welding arc. Inverter power sources were first introduced into the welding industry in the early 1980s. The initial attraction of the inverter was its small size and easy portability. For example, a rectifier-based machine, could weigh as much as four times that of an inverter-based machine. Less space is needed and the inverter unit is easily moved around the job site. As the popularity and reliability of the inverter increased, the capabilities were expanded. Inverters are now designed for many different processes: SMAW, GTAW, FCAW, SAW, and are capable of operating in extreme environments. Over the last decade, Lincoln Electric has invested heavily in developing inverter technology, producing highly reliable inverter machines.
Lincoln K2910-2 12-Pin to 7-Pin Adapter Connector Cable
 -  Used for connecting 12-pin guns to 7-pin wire feeders/power sources. Compatible with Magnum PRO Push Pull Guns. Use with 12-pin Magnum PRO Push Pull guns.
Lincoln LN25 K428 Semiautomatic Wire Feeder
 -  15-40V DC (110V Max. OCV), 500A/60%, 50-700 WFS
Lincoln LN25 K499 Semiautomatic Wire Feeder with Internal Contactor and Gas Solenoid
 -  15-40V DC (110V Max. OCV), 300A/60%, 50-700 WFS
Lincoln LN25 PRO K2613-5 Standard Semiautomatic Wire Feeder
 -  15-110 VDC, 450A/60%, 50-700 WFS, 38 lb (17 kg), available One-Paks - K4101-1 with Magnum® PRO Curve™ 300 Gun, K4101-2 with K126® PRO FCAW-S Gun
Lincoln LN25 PRO K2613-7 Extra Torque Semiautomatic Wire Feeder
 -  15-110 VDC, 450A/60%, 30-400 WFS
Lincoln LN25 PRO K2614-5 PIPE Semiautomatic Wire Feeder
 -  15-110 VDC, 450A/60%, 50-700 WFS
Lincoln LN25 PRO K2614-6 Dual Power Semiautomatic Wire Feeder
 -  15-110 VDC or 24-42 VAC, 450A/60%, 50-700 WFS, The LN-25 PRO Dual Power wire feeder is ideal for field construction. It features a voltage control knob for superior arc control, digital meters for increased monitoring, MIG-STT® capability (for use with Lincoln STT-capable power sources), and can be powered with either a control cable or across-the-arc.
Lincoln LN25 PRO K2614-9 Ironworker Semiautomatic Wire Feeder
 -  15-110 VDC, 450A/60%, 50-700 WFS
Lincoln LN25X K4267-1 CrossLinc Semiautomatic Wire Feeder
 -  15-115VDC, 450A @ 60% duty cycle, 50-700 ipm WFS, 40 lb, available One-Paks - K4100-1 with Magnum® PRO Curve™300 Gun, K4100-2 with K126® PRO FCAW-S Gun
Lincoln LN25X K4267-2 CrossLinc TVT Base Model Semiautomatic Wire Feeder
 -  15-115VDC, 450A @ 60% duty cycle, 50-700 ipm WFS, 40 lb
Lincoln LN25X K4267-3 CrossLinc TVT Base Model Semiautomatic Wire Feeder w/Flowmeter Package
 -  15-115VDC, 450A @ 60% duty cycle, 50-700 ipm WFS, 40 lb
Lincoln LN25X K4267-4 CrossLinc TVT CE Model Semiautomatic Wire Feeder
 -  15-115VDC, 450A @ 60% duty cycle, 50-700 ipm WFS, 40 lb
Lincoln LN25X K4267-5 CrossLinc TVT Extra Torque Model Semiautomatic Wire Feeder
 -  15-115VDC, 450A @ 60% duty cycle, 50-700 ipm WFS, 40 lb
Lincoln Low Fume Pulse™
 -  Technology developed by Lincoln Electric which simplifies the balancing act between weld-fume control and weld floor productivity. This advanced pulsed welding process maximizes arc performance while effectively controlling heat-input.
Lincoln Magnum PRO 100SG Spool Gun K3269-1
 -  0.030-0.035 wire size, 130A/30%, connects directly to POWER MIG® 140C, POWER MIG® 180C, POWER MIG® 180 Dual, POWER MIG® 210 MP, POWER MIG® 216
Lincoln Magnum PRO 250LX GT Spool Gun, 25ft K3569-2
 -  Connects easily and effectively plugs directly into the POWER MIG 256, POWER MIG 260, Ranger 330MPX, RANGER 260MPX and Red-D-Arc GX330XL without the need for an additional adapter. Multi-Turn Wire Speed Adjustment Adjust wire speed remotely at the gun with fine resolution so there is no need to travel back to the power source. Tool-less Drive Roll Tension Large thumbscrew makes fine adjustment of drive roll pressure effortless. Set screw allows for coarser adjustment if needed for steel. Magnum PRO expendables utilizes premium Magnum PRO expendables for extended contact tip life, increasing the amount of arc-on time.
Lincoln Magnum PRO 250LX Spool Gun, 25ft K3570-2
 -  Remote wire speed adjustment at the gun, Aluminum Wire: 0.030-3/64 Steel Wire: 0.025-0.035, Mixed Gas: 280A @ 60%, 200A @ 100%, Connects directly to POWER MIG 256, POWER MIG 260, connects to POWER MIG 350MP with K2703-1 adapter, connects to Power Wave C300 with K2910-1 adapter.
Lincoln Magnum SG Control Module K488
 -  The Magnum® SG Control Module allows Magnum SG spool guns to be operated with any Lincoln CV or CV/CC power source and many Lincoln engine-driven welders, as well as any welder that has CV welding output, a 115 VAC control circuit output, and an output contactor internally or externally energized with closure or 115 VAC, respectively. A constant voltage welder without a contactor may be used, but the electrode wire will always be electrically “hot”, even when gun trigger is not activated. An input cable assembly must be used to connect the control module to the power source: 1. K492-10 10 ft. input cable assembly for use with Lincoln CV power sources having terminal-strip control connections (Lincoln R3S, CV-400, DC400, DC600, DC1000). Can also be used with non-Lincoln CV power sources. 2. K493-10 10 ft. input cable assembly for use with Lincoln CV power sources having 14-pin control cable connection and 3. K691-10 10 ft. input cable assembly for use with Lincoln engine-driven power sources having 14-pin control cable connection and/or 115VAC outlet. The control module is not required when connecting Magnum spool guns to Lincoln and Red-D-Arc models that have built-in wire-feed control circuits. See operator manual IM398 for details.
Lincoln Magnum SG Spool Gun, Air-Cooled, 25ft K487-25
 -  The Magnum® SG a lightweight, well balanced semiautomatic spool gun with remote wire-feed speed control designed for easy and reliable aluminum wire feeding with a variety of CV power sources and engine-driven welders. Rated 250 amps @ 60%, the Magnum® SG features a generous 25 ft (7.5 m) gun cable and integrated wire feed speed control in the handle to cut your trips back to the power source. 50 to 650 ipm. 4 inch diameter spools. Narrow groove for .023 to .035" dia. aluminum wire, Wide groove for 3/64" dia. aluminum wire Use with Magnum® SG Control Module K488 with CV power sources and CV Engine Drives with output contactor. The control module allows the spool gun to be used with any welder possessing the following characteristics: 1. CV welding output. 2. A 115 VAC control circuit output. c. An output contactor internally or externally energized with closure or 115 VAC, respectively. A constant voltage welder without a contactor may be used, but the electrode wire will always be electrically “hot”, even when gun trigger is not activated. See also IM408 and IM398 operator manuals. See Lincoln Magnum SG Spool Gun
Lincoln Magnum Spool Guns and Accessories
 -  K487-25 Magnum SG Spool Gun, Air-Cooled K3269-1 Magnum PRO-100SG Spool Gun, 4 Pin, 10ft K3569-2 Magnum PRO-250LX-GT Spool Gun, 25ft K3570-2 Magnum PRO-250LX Spool Gun, 25ft
Lincoln Micro-Start Technology™
 -  Micro-Start TIG technology employs an independent power supply capable of welding without SCR assistance at low amperages – SCRs only fire to raise the current and supplement the 2 amp welding supply. This gives Micro-Start TIG very stable low current welding and provides it with the ability to eliminate erratic high frequency and weld thin materials in a consistent, high quality manner. Lincoln is the first manufacturer to offer a background circuit from which an operator can weld and smoothly transition to, or from, higher outputs. Micro-Start TIG is capable of independently welding off of its electronic power supply when the amperage is down to the minimum rated 2 amps. As the operator depresses the foot Amptrol™ to increase the current, the main welding circuit (i.e. transformer and SCR bridge) turns on and provides amperage. The technology assists the transformer SCR choke circuit with its special electronic welding circuit instead of completely relying on chokes to smooth the arc as do conventional machines. The result is a very stable and smooth output at low amperage levels. With Micro-Start TIG, operators don’t have to buy more expensive machines to get low end welding capabilities – Micro-Start technology is able to provide inverter-like performance using a lower cost, conventional machine. With Lincoln’s Micro-Start TIG technology, an operator at virtually any TIG skill level will be able to make repeatable, high-quality starts, welds and finishes. This is because the new technology makes it easy to overcome the most common TIG welding issues with machines that overcome the most common performance limitations.
Lincoln Micro-Start™ II Technology
 -  Micro-Start II provides the operator with the ability to weld at lower DC amperages and “feather out” to as low as 2-5 amps at the end of the weld. Also, once the high frequency initiates the DC arc, the control circuit prevents the high frequency from coming on again during crater fill. In effect, the high frequency is no longer needed because Micro-Start technology provides tremendous low amperage stability for the machine. With Micro-Start II technology (found on Lincoln Precision TIG welders), Lincoln Electric has devised a way to get the arc established more quickly, more smoothly and with greater stability. It does this using an electronic low amp welding power supply to supplement the main power supply. The starting circuit offers just enough energy to heat the tungsten and establish a more stable plasma flow to the work piece. This starting sequence is short and provides precise control over starting conditions. In effect, Micro-Start II technology is so effective that most operators cannot detect that the high frequency was used during starting. In many traditional, low amperage TIG applications, operators have trouble maintaining a smooth, stable arc. This is because the machine's choke cannot store enough energy between SCR firings to stabilize the arc. The resultant ‘ripple effect’ creates arc instability, which may result in arc outages followed by high-frequency arc re-initiations. These erratic outages can lead to inconsistencies in the weld. Micro-Start TIG utilizes a separate electronic power supply to establish an arc and weld at the Precision TIG minimum rated amps. When the operator first depresses the foot pedal, this separate power supply starts and welds independently of the Precision TIG main welding circuit (i.e. transformer and SCR bridge). As the operator further depresses the foot pedal to increase the current, the main welding circuit turns on and provides additional amperage. Unlike conventional machines, which rely completely on the SCR choke, Micro-Start technology’s special electronic welding circuit assists the transformer SCR choke circuit by delivering smooth power to the arc. This gives the Precision TIG very stable low-current welding capability and provides the customer with the ability to weld thin materials in a consistent, high-quality manner.
Lincoln Outback 145 K2707-2 Engine Driven Welder CC DC (Kohler)
 -  RATED OUTPUT 100A DC/25V/60%, 125A DC/25V/30% OUTPUT RANGE 50-145A DC, GENERATOR OUTPUT 4750 watts peak, 4250 watts continuous, ENGINE Kohler® CH395, 8.9 HP @ 3600 RPM, 1 cylinder, NET WEIGHT 234.00 (106.14 kg), DC Welding with up to 1/8 in. (3.2 mm) Stick Electrode, 4,750 Watts Peak (4,250 Watts Continuous) AC Generator Power, ARC PERFORMANCE General purpose DC Stick welding up to 145 amps, 1/8" stick electrode
Lincoln PIPEFAB™ K3734-1 Welding System Ready-Pak®
 -  The PIPEFAB™ system comes with weld modes optimized specifically for pipe and vessel fabrication using all processes (Stick, MIG, TIG and FCAW) that have been fine-tuned for maximum performance with the industry’s common, filler metal, wire diameters and gas mixtures.
• Stick modes optimized for cellulosic and low hydrogen electrodes
• MIG modes optimized for 0.035 in. & 0.045 in. steel, stainless steel and metal-cored
• MIG modes optimized for simplicity (Smart Pulse™) and fume management (Low Fume Pulse™)
• Flux-cored modes optimized for 0.045 in., 0.052 in., 1/16 in.
200-208/220-230/380-415/460/57 PIPEFAB™ Power Source K3731-1, PIPEFAB™ Power Source (CE) K3732-1, PIPEFAB™ Feeder K3735-1, PIPEFAB™ Ready-Pak K3734-1
LIncoln Power Mode®
 -  Enhanced MIG mode developed by Lincoln Electric which can deliver excellent arc stability with reduced spatter at high travels speeds, resulting from an extended short arc range at higher wire feed speed procedures. It also yields a tight and stable arc in spray transfer.
Lincoln Power Wave S500 K2904-1 Advanced Process Welder DC CC/CV
 -  Rated Output: 550A/41.5/40%, Input Current: 3PH/40% - 80/73/41/37/29A, 3PH/100% - 60/54/30/27/21A, Output Range: 5-550A DC Processes Stick, DC TIG, Pulsed DC TIG, MIG, Pulsed MIG, Flux-Cored, Input Power 208/230/380/415/460/575/3/50/60 Recommended Wire Feeders: Power Feed 84 Bench and Boom models, Power Feed 25M
Lincoln PowerConnect® Technology
 -  A technology developed by Lincoln Electric that allows for automatic connecting to any incoming voltage 200-575VAC, single or three-phase, 50 or 60Hz
Lincoln Precision Pulse™
 -  Enhanced MIG pulse mode by Lincoln Electric featuring a tight, focused arc for fast vertical up welding and outstanding out-of-position puddle control.
Lincoln Pulse-on-Pulse®
 -  Arc modulation MIG pulse mode by Lincoln Electric that can deliver a TIG (GTAW)-like bead appearance.
LIncoln Ranger 225 K2857-1 Engine Driven Welder
 -  Kohler
Stick, TIG, MIG, Flux-Cored
Lincoln Ranger 250 GXT K2382-4 Engine Driven Welder
 -  Kohler with electric fuel pump
Stick, TIG, MIG, Flux-Cored, Gouging
Lincoln Ranger 250 GXT K2382-5 Engine Driven Welder
 -  Kohler with electric fuel pump, Stainless Steel Case
Stick, TIG, MIG, Flux-Cored, Gouging
Lincoln Ranger 260MPX K3458-1 Engine Drive Welder
 -  NON-IEC Rating: 260A/26V/100%
IEC Rating: DC Stick: 231A/29.2V/100%, DC TIG: 260A/20.4V/100%, DC Constant Voltage: 253A/26.7V/100%
Kohler OHV Command CH730 Gas, 23.5 HP @3600
Stick, TIG, MIG, Flux-Cored
Lincoln Ranger 260MPX K3458-1 Engine Drive Welder
 -  Kohler® OHV Command CH730 gas engine, 23.5 HP @ 3600 RPM The Ranger® 260MPX™ engine driven welder/generator's industry-leading design makes it smaller, lighter and quieter than other machines in its class, while an intuitive user interface with advanced technology helps simplify operation and improve arc control. Chopper Technology® feature helps improve arc control. The 9.5kW generator provides clean power to run a variety of tools and sensitive equipment with 5% Total Harmonic Distortion. Features include CrossLinc® remote technology for arc adjustments at the weld.
IEC Output Range - DC Stick: 231A/29.2V/100% DC TIG: 260A/20.4V/100% DC Constant Voltage: 253A/26.7V/100%
Generator Peak Power 9.5kW, Generator Continuous Power 10kW
Lincoln Ranger 330MPX K3459-1 Gas Engine Welder
 -  CrossLinc, Kohler OHV Command CH740, 2 cylinder, 25 HP @ 3600 RPM, 10 kW continuous 11.5 kW peak auxiliary power, DC Stick: 292A/31.7V/100%, DC TIG: 330A/23.2V/100%, DC Constant Voltage: 312A/ 29.6V 100%
Lincoln Rapid X™
 -  Premium MIG pulse mode developed by Lincoln Electric, designed to deliver higher travels speeds and extremely low spatter levels.
Lincoln Rapid Z™
 -  Lincoln Electric process designed to increase stability and travel speeds, while reducing spatter and internal porosity on Zinc coated materials.
Lincoln RapidArc®
 -  Accelerated MIG pulse mode with a short arc length compared to pulse and CV-spray for high travel speed applications. Developed by Lincoln Electric.
Lincoln Ready-To-Run™
 -  Lincoln's Ready-to-Run™ feature (on the PIPEFAB™ welding system) keeps all process outputs electrically isolated and ready to weld when needed – eliminating the need to swap cables to change welding processes.
Lincoln Ready.Set.Weld® Push and Turn Digital Controls
 -  Intuitive push-and-turn digital controls and seven-inch, full color display guides users through the process to make setup and operation intuitive and simple. Advanced options and settings are simple to access.
Lincoln Shield Arc SAE300-F226 K1197 Gas Engine Welder
 -  Continental F226 gas, 6 cylinder, 226 CID, 50 HP @ 1500 RPM, 300A at 40V @ 60% duty cycle, 1kW 115VDC, Type R-57 delayed action automatic engine idler 4300.1
Lincoln Shield Arc SAE400-F244 K1198 Gas Engine Welder
 -  Continental F244 gas, 6 cylinder, 226 CID, 60 HP @ 1700 RPM, 400A at 40V @ 60% duty cycle, 1kW 115VDC, Type R-57 delayed action automatic engine idler 4300.1
Lincoln Shield Arc SAE600-G3400 K1200-SM Gas Engine Welder
 -  Hercules G3400 gas, 6 cylinder, 226 CID, 82 HP @ 1400 RPM, 600A at 40V @ 60% duty cycle, 1kW 115VDC, Type R-57 delayed action automatic engine idler 4300.1
Lincoln Shield-Arc SA200 Hercules IXB Gas Engine Welder
 -  Hercules IXB, 4 cylinder, 133 CID, 31 HP @ 1800 RPM (per E128 graph)
Lincoln Shield-Arc SA200-F162 K6090 Gas Engine Welder
 -  Continental F162 gas, 4 cylinder, 162 CID, 36 HP at 1450 RPM, 200A at 40V @ 60% duty cycle NEMA rated, 1kW 115VDC, Type R-57 delayed action automatic engine idler, optional K-6090-SM model with 12V battery-driven electric-start (standard model - hand crank), built circa 1963
Lincoln Shield-Arc SA200-F163 K6090 Gas Engine Welder
 -  Continental F163 gas, 4 cylinder, IM208-A, IM276-B, IM277-A, P23-A, P111-A
Lincoln Shield-Arc SA200-L200 S6090 Gas Engine Welder
 -  L200 Continental F162 gas, 4 cylinder, 162 CID, 27 HP at 1400 RPM, IM127-B
Lincoln Shield-Arc SAE300 Gas Engine Welder Hercules QXLD-3
 -  Hercules QXLD-3, 6 cylinder gas engine
Lincoln Shield-Arc SAE400 K1278-10 Diesel Engine Welder
 -  Deutz F4L912 Diesel Non-EPA, 4 cylinder, 59.6 HP @ 1800 RPM (Export Only) 400A DC/40V/100%, 500A DC/40V/35% Optional CV Adapter for flux-cored welding
Lincoln Shield-Arc SAE400 K1278-14 Diesel Engine Welder
 -  Perkins 1104A-44 Diesel Non-EPA Tier II, 4 cylinder, 64.4 HP @ 1710 RPM (International Export Only) 400A DC/40V/100%, 500A DC/40V/60% Optional CV Adapter for flux-cored welding
Lincoln Shield-Arc SAE400 K1278-15 Diesel Engine Welder
 -  Perkins 1104A-44 Diesel, High-Capacity AC Power, 4 Cylinder, 64.4 HP @ 1710 RPM 13,000 watts 3-phase 240V, 10,000 watts 1-phase 120V/240V, Euro and NEMA receptacles Non-EPA (Export Only)
Lincoln Shield-Arc SAE400 K1278-7 Diesel Engine Welder
 -  Perkins 1104C-44 Diesel EPA Tier II, 4 cylinder, 68.4 HP @ 1725 RPM
Lincoln Shield-Arc SAE400 K1278-8 Diesel Engine Welder Severe Duty
 -  Perkins 1104C-44 Diesel EPA Tier II, 4 cylinder, 68.4 HP @ 1,725 RPM
Lincoln Shield-Arc SAE400 K1278-9 Diesel Engine Welder
 -  Perkins 1104A-44 Diesel, Tier II, 4 cylinder, 68.4 HP @ 1710 RPM, Not EPA Tier II Compliant (Export Only)
Lincoln Shield-Arc SAE500 K1278-11 Diesel Engine Welder
 -  Kubota V3600-T Turbo Diesel EPA Tier 4i, 4 cylinder, 57.8 HP @ 1800 400A/40V/100% 500A/40V/60%
Lincoln Shield-Arc SAE500 K1278-12 Diesel Engine Welder Severe Duty
 -  Kubota V3600-T Turbo Diesel EPA Tier 4i, 4 cylinder, 57.8 HP @ 1800 400A/40V/100% 500A/40V/60%
Lincoln Shield-Arc SAE500 K3955-1 Diesel Engine Welder Severe Duty
 -  Deutz TD2.9L4 Turbo Diesel T4F Compliant 64 HP @ 1800 RPM 400A/40V/100%, 500A/40V/60%
Lincoln Smart Pulse™
 -  Smart Pulse™ delivers an innovative solution for pulse welding simplicity and performance. Utilizing Waveform Control Technology®, Smart Pulse™ monitors your machine settings and automatically tailors the pulse to deliver the ideal arc for your pipe welding needs.
• Set a low WFS for out-of-position pipe welding – Smart Pulse™ auto-adjusts for a narrow, focused arc
• Set a high WFS for 1G pipe welding – Smart Pulse™ auto-adjusts for a wide, soft arc
• Less time adjusting means more time welding
Lincoln Square Wave®
 -  The AC output of a power source that has the ability to rapidly switch between the positive and negative half cycles of alternating current.
Lincoln Surface Tension Transfer (STT)
 -  An advanced waveform MIG welding process developed by Lincoln Electric. STT uses high frequency inverter technology with advanced waveform control to produce a high-quality weld with less spatter and smoke. Easy to operate and can achieve good weld penetration with low heat input.
Lincoln Synchronized Tandem MIG®
 -  Lincoln Electric technology which overcomes deposition rate limitations of a single wire by using two wires and specific waveforms. The result is nearly double deposition rates and faster travel speeds.
Lincoln TVT™ True Voltage Technology™ voltage drop compensation
 -  In many outdoor welding applications the operator can be located hundreds of feet away from the power source. All that cable can create a difference in voltage, or voltage drop, between the power source and the weld. For example, if 24 volts is set on the welding power source, as a result of electrical resistance through the cables, only 20 volts may actually be available at the wire feeder. This would result in a cold weld. True Voltage Technology (TVT) calculates this drop and gives the true voltage set at the wire feeder by adjusting the power source to compensate for the voltage drop. In this example, 24 volts is preset at the wire feeder. TVT senses there is a 4 volt drop due to long weld cables and compensates by increasing the welder power source output to 28 volts. The result is that the desired 24 volt is available at the welding arc.
Lincoln V155S K2605-1 DC Stick Welder
 -  Stick, DC TIG, 5-155 Amps DC output, Max. OCV 75V120/230/1/50/60 input
Lincoln VIKING™ PAPR 3350 K3930-1 Welding Helmet Powered Air Purifying Respirator
 -  The VIKING™ PAPR is a complete system that purifies ambient air from the shop and delivers filtered, breathable air for as much as eight hours without interruption. The two-speed blower drives filtered air through the hose into a modified VIKING™ 3350 helmet which has a perfect 1/1/1/1 optical clarity and now also features 4C™ Lens Technology. A patent pending adjustable baffling system inside the helmet directs air away from eyes to keep them from getting dry. The PAPR system has an OSHA Assigned Protection Factor of 25(3). The PAPR system is equipped with a VIKING 3350 helmet that offers a top EN 379-1/1/1/1 optical clarity rating.
Lincoln VRD™ (Voltage Reduction Device™)
 -  VRD™ (Voltage Reduction Device™) provides an additional measure of safety, especially when working in an environment with a higher risk of electrical shock such as wet areas and hot, humid, sweaty conditions. The VRD™ reduces the OCV (open circuit voltage) at the welding output terminals while not welding to less than 2 volts DC. Indicator lights will also signal when output voltage during welding is above or below 30 volts DC.
Lincoln Weldanpower 225 K1190 Gas Welder Legacy
 -  Wisconsin THD gas, 2 cylinder, 14.2 HP at 2200 RPM, 225A at 25V @ 40% duty cycle, 5kW 115/230V
Liquidus
 -  The lowest temperature at which a metal or an alloy is completely liquid.
Local preheating
 -  Preheating a specific portion of a structure.
Local stress relief heat treatment
 -  Stress relief heat treatment of a specific portion of a structure.
Longitudinal sequence
 -  The order in which the increments of a continuous weld are deposited with respect to its length.
Machine welding
 -  Welding with equipment which performs the welding operation under the constant observation and control of a welding operator. The equipment may or may not perform the loading and unloading of the work.
Macro Testing
 -  A destructive testing method where the sections of a weld are polished, etched and examined under a microscope for defects.
Manual welding
 -  A welding operation performed and controlled completely by hand.
Melt-thru
 -  Complete joint penetration for a joint welded from one side. Visible root reinforcement is produced.
Melting range
 -  The temperature range between solidus and liquidus.
Melting rate
 -  The weight or length of electrode melted in a unit of time.
Metal cored electrode
 -  Composite filler metal electrode consisting of a metal tube or other hollow configuration containing alloying ingredients. Minor amounts of ingredients providing such functions as arc stabilization and fluxing of oxides may be included. External shielding gas may or may not be used.
Metal electrode
 -  A fillet or non-filler metal electrode, used in arc welding or cutting consisting of a metal wire or rod that has been manufactured by any method and that is either bare or covered with a suitable covering or coating.
Metallic bond
 -  The principal bond which holds metals together and which is formed between base metals and filler metals in all welding processes. This is a primary bond arising from the increased spatial extension of the valence electron wave functions when an aggregate of metal atoms is brought close together.
Method
 -  An orderly arrangement or set form of procedure to be used in the application of welding or allied processes.
Microprocessor
 -  One or more integrated circuits that can be programmed with stored instructions to perform a variety of functions.
MIG (GMAW) Welding
 -  MIG is an acronym for Metal-Inert-Gas, also known as GMAW or Gas Metal Arc Welding. This arc welding process uses a spooled, continuously fed filler metal (consumable) electrode. Shielding is provided by externally supplied gas or gas mixtures. Easiest process to learn, High welding speeds possible, Provides better control on thinner metals, Cleaner welds possible with no slag, Same equipment can be used for flux-cored welding. For welding steel, stainless steel, nickel alloys, aluminium, copper/brass. Learn More about: Aluminum MIG Welding, MIG Packages, MIG Wirefeeder Welders
MIG/MAG GMAW Welding
 -  MIG stands for Metal Inert Gas. Only inert gases or gas mixtures are used for the shielding gas when MIG welding. Typical inert gases used for MIG welding are argon and helium. These gases are usually used for MIG welding of aluminium and other non-ferrous metals. MAG stands for Metal Active Gas. Active gas mixtures have been developed primarily for welding steels. Typical shielding gases are mixtures of argon, carbon dioxide and oxygen e.g. CO2 , Ar + 2 to 5% O2 , Ar + 5 to 25% CO2 and Ar + 10% CO2 + 5% O 2 . The composition of the shielding gas has a substantial effect on the stability of the arc, metal transfer and the amount of spatter. The shielding gas also affects the behaviour of the weld pool, particularly its penetration and the mechanical properties of the welded joint. In the US, both MIG and MAG welding are described by the term GMAW (Gas Metal Arc Welding).
Miller Accu-Pulse®
 -  MIG process that delivers precise control of the arc even over tack welds and in tight corners. Provides optimum and precise molten puddle controL. A Miller Technology Exclusive.
Miller Accu-Rated™ Power
 -  The standard for measuring engine-driven generator power. Guarantees delivery of all power promised. A Miller Technology Exclusive.
Miller Active Arc Stabilizer™
 -  A Miller Technology Exclusive - Active Arc Stabilizer enhances arc starts and provides a softer arc throughout all ranges, with less puddle turbulence and less spatter.
Miller Adaptive Hot Start™
 -  Automatically increases the output amperage at the start of a stick weld, should the start require it. Helps eliminate sticking of the electrode at arc start. A Miller Technology Exclusive. Available on these machines: 12VX Extreme Duty, EXtreme 360 MAP , Miller Syncrowave 250 DX , Miller Syncrowave 350 LX , Miller XMT 350 MPa
Miller Advanced Active Field Control Technology™
 -  A simple and reliable patented way of accurately controlling an engine drive's generator weld output. A Miller Technology Exclusive.
Miller AlumaFeed 907420 & XR-AlumaFeed Feeder 300509
 -  Separate machine and XR-AlumaFeed Feeder, Torque motor synchronized, true push-pull for precise aluminum wire feeding and arc performance for 4000 series and 5000 series aluminum wire, optional push-pull gun accessory
Miller Aluminum Pulse Hot Start™
 -  This Miller Technology Exclusive automatically provides more arc power to the Millermatic® 350P to eliminate a "cold start" that is inherent with aluminum starts.
Miller Arc-Drive
 -  Automatically enhances Stick welding, especially on pipe, by focusing the arc and preventing the electrode from going out. A Miller Technology Exclusive.
Miller ArcConnect™
 -  Next generation communication that utilizes high-speed signals to improve weld performance and allow point-of-use controls to be located at the feeder. Found on the Deltaweld 350 System.
Miller ArcReach™
 -  Technology developed by Miller Electric that provides the ability for a welding operator to make parameter adjustments at the wire feeder without the need for control cords or specialized wireless remotes. Voltage changes are communicated from the wire feeder to the power source using existing welding cables. Multiprocess (Dimension 650 ArcReach, XMT 350 FieldPro models, XMT 450 CC/CV ArcReach), Engine Drives (Trailblazer 325 with ArcReach, Big Blue ArcReach models)
Miller AugmentedArc® Welding Simulator
 -  Highly realistic multiprocess welding simulation solution. For beginner to advanced-level weld students, this system simulates multiple welding processes, blending real-world and computer-generated images into an unique, augmented reality environment. Features classroom connectivity, student history and reporting, Miller OpenBook™, and the ability to customize your very own assignments
Miller Auto Remote Sense™
 -  Automatically switches machine from panel to remote control with remote connected. Available on Dimension™ NT 450, XMT® 350, Trailblazer® Series, and PRO 300. Eliminates confusion and need for panel/remote. A Miller Technology Exclusive
Miller Auto-Crater™
 -  This Miller Technology Exclusive allows a TIG arc on the Trailblazer® Series to crater-out, allowing time for the addition of filler, without the loss of shielding gas. Eliminates the need for a remote control at arc end.
Miller Auto-Line™ Technology
 -  This Miller Technology Exclusive allows for any primary input voltage within a range, single- or three-phase, 50 or 60 hertz with no manual linking. Also adjusts for voltage spikes within the entire range. Provides convenience in any job setting and is ideal for dirty or unreliable power. Available on MIG (Millermatic 255, AlumaPower 350, Invision 352, Continuum, Auto-Continuum), Multiprocess (Multimatic 255, Dynasty, XMT 350), Stick (Maxstar), TIG (Maxstar, Syncrowave 210, Dynasty, Plasma cutters (Spectrum)
Miller Auto-Link®
 -  Internal inverter power source circuit that automatically links the power source to the primary voltage being applied (230 V or 460 V), without the need for manually linking primary voltage terminals. A Miller Technology Exclusive.
Miller Auto-Refire™
 -  This Miller Technology Exclusive automatically controls the pilot arc when cutting expanded metal or multiple pieces of metal, without manual re-triggering.
Miller Auto-Set™
 -  Provides speed, convenience and confidence of preset controls and eliminates guesswork when setting weld parameters. Variations of this technology include Advanced Auto-Set and Auto-Set Elite. MIG (Millermatic 141/211/212 Auto-Set/255), Multiprocess (Multimatic)
Miller Auto-Speed™
 -  Automatically adjusts engine speed to a corresponding rpm level so the engine never works harder than necessary. Reduces fuel consumption, exhaust emissions and noise levels on the Trailblazer 325 engine drive.
Miller Auto-Stop™
 -  This Miller Technology Exclusive allows a TIG arc to be stopped without the loss of shielding gas on the Trailblazer® Series.
Miller Automatic Start at Idle
 -  This Miller Technology Exclusive idles engine immediately when started, extending engine life and reducing fuel consumption and noise.
Miller Axcess™ File Management
 -  Software that turns a standard Palm handheld into a data card and a remote pendant for all Axcess systems. Allows emailing, storage and transfer of welding programs. A Miller Technology Exclusive.
Miller ClearLight™ Lens Technology
 -  Optimizes contrast and clarity in welding and light states. 1/1/1/2 optical clarity rating allows a lighter light state while not welding, providing versatility for varied applications. Found on T94, Digital Infinity, Digital Elite and Digital Performance welding helmets.
Miller Cool-On-Demand™
 -  Integrated cooler runs only when needed on Syncrowave® 250 DX and 350 LX. A Miller Technology Exclusive.
Miller Dual Power Option™
 -  This Miller Technology Exclusive gives the option on the PipePro® 304 engine drive to use 230 volt single- or three-phase electric input power, eliminating engine wear, noise and emissions, as well as fuel costs.
Miller Dynamic DIG™
 -  Automatically adjusts the amount of current required to clear a short. Delivers a smoother, more consistent arc that can be tailored to match the application, material, fit-up and welder technique. Found on Trailblazer 325 and Big Blue engine drives
Miller Engine Save Start™
 -  Idles engine three - four seconds after starting on Trailblazer® 275 DC and 302. Extends engine life and reduces fuel consumption.A Miller Technology Exclusive.
Miller Excel™ Power
 -  Provides 2,400 watts (20 A) of 120-volt power at all engine speeds, including idle. Reduces fuel consumption, exhaust emissions and noise levels on select models of the Trailblazer.
Miller Fan-On-Demand™
 -  Fan only operates when needed to reduce noise, energy use and amount of contaminants pulled through the machine. Found on various MIG, multiprocess, stick, TIG and plasma cutter products.
Miller Fan-On-Demand™
 -  Internal power source cooling system that only works when needed, keeping internal components cleaner. A Miller Technology Exclusive.
Miller FasTip™ Contact Tip
 -  Patented, single-turn for quick change — no tools needed. A Miller Technology Exclusive.
Miller Gun-On-Demand™
 -  This Miller Technology Exclusive allows you to use either a standard gun or a Spoolmatic® gun on Millermatic® 210, 251 and 350 without flipping a switch. The machine senses which gun you are using when you pull the trigger.
Miller Hot Start™
 -  Used on some stick (SMAW) machines to make it easier to start difficult-to-start electrodes. Used for arc starting only. A Miller Technology Exclusive.
Miller InfoTrack™
 -  Data monitoring technology tracks arc time and features a clock. Version 2.0 adds arc count. Found on T94 and Digital Infinity welding helmets
Miller Insight ArcAgent™
 -  Insight ArcAgent™ is a set of premium data acquisition tools that enable both Insight Core and Insight Centerpoint solutions to integrate with any brand of welding power source.
Miller Insight Centerpoint™
 -  Insight Centerpoint™ is an advanced PC-based operator feedback solution designed to detect missed welds, verify proper weld sequence and provide weld defect detection — all in real time. Insight ArcAgent
Miller Insight Core™
 -  Insight Core™ is a simplified, internet-based welding information solution that reports operator productivity and deposition, as well as weld parameter verification.
Miller Insight Welding Intelligence™
 -  Includes Insight Core™, Centerpoint™, and ArcAgent™ applications for digital communications and data storage that integrate with Miller and other manufacturers' welding equipment.
Miller Lift-Arc™
 -  This feature allows TIG arc starting without high frequency. Starts the arc at any amperage without contaminating the weld with tungsten. A Miller Technology Exclusive.
Miller LiveArc™
 -  Reality-based recruiting, screening and training solution. Ideal for lab training, the Miller LiveArc welding performance management system provides both a simulation/pre-weld setup mode as well as a live-arc training mode, allowing the user to gain experience and build techniques in pre-weld exercises before seamlessly transitioning into real welding on GMAW, FCAW and SMAW processes.
Miller Low OCV Stick Mode
 -  A built-in, selectable feature, that reduces the Stick mode open-circuit voltage (OCV) to nearly 15 volts when the welding power source is not in use. Eliminates the need for add-on voltage reducers.
Miller Low OCV Stick™
 -  Reduces OCV on several Maxstar® and Dynasty® models when power source is not in use, eliminating need for add-on voltage reducers. A Miller Technology Exclusive.
Miller LVC™ (Line Voltage Compensation)
 -  Keeps the output of a power source constant, regardless of minor fluctuations in input power. A Miller Technology Exclusive.
Miller LVC™ (Line Voltage Compensation)
 -  Keeps the output of a power source constant, regardless of minor fluctuations in input power. A Miller Technology Exclusive.
Miller Millermatic 350P All-In-One MIG Welder 907300
 -  All-In-one package with steel and aluminum MIG and pulsed MIG processes, Constant speed motor with Industrial 4 drive roll system, Compatible with MIG, spool and push-pull guns, 4000 series & 5000 series aluminum wire, optional push pull accessory
Miller Millermatic 350P Aluminum 907474 Legacy
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MIller Millermatic 350P Aluminum w/15 ft. XR-Aluma-Pro 951868 Legacy
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Miller Millermatic 350P Aluminum w/25 ft. XR-Aluma-Pro 951869 Legacy
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Miller Millermatic 350P Aluminum w/25 ft. XR-Aluma-Pro Lite 951454 Legacy
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Miller Millermatic 350P Aluminum w/25 ft. XR-Pistol-Pro 951453 Legacy
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Miller MobileArc™ Welding Simulator
 -  An affordable, easy-to-use welding simulation tool designed to attract, engage and introduce students to welding through a hands-on augmented reality experience. This portable weld simulator delivers a highly-realistic, intuitive solution that's easy enough for students to learn independently - so instructors can maximize efficiency.
Miller MTE
 -  Miller Technology Exclusive
Miller MVP™ (Multi-Voltage Plugs and Adapters)
 -  This Miller Technology Exclusive allows connection of Millermatic® DVI™ or Passport™ to 115- or 230-volt receptacles without tools — just choose the plug that fits the receptacle. MIG (Millermatic 211), Multiprocess (Multimatic 200/215/220 AC/DC), Stick (Thunderbolt 160), TIG (Diversion, Syncrowave 210), Engine Drives (Fusion), Plasma Cutters (Spectrum 375/625)
Miller Palm™ OS Compatibility
 -  Replaces the need for data cards and remote control pendants on Miller Axcess models.
Miller Power Shift
 -  Provides single-phase stick weld capability with the engine shut off by plugging into 120- or 240-volt wall power. Ideal for indoor or noise-sensitive environments. Found on the Miller Fusion engine drive.
Miller Pro-Set™
 -  Provides speed, convenience and confidence of preset controls and eliminates guesswork when setting TIG weld parameters. Multiprocess (Multimatic 220 AC/DC, Dynasty), TIG (Syncrowave 210, Dynasty, Maxstar)
Miller QuickTech™
 -  Provides easy setup and process changing on the Multimatic 220 AC/DC multiprocess welder. Automatically determines polarity. Work is always connected to the bottom right receptacle. MIG gun and TIG torch can stay connected at the same time. Automatically switches to the right process. Just hit trigger or foot control and the machine automatically changes, eliminating the need to manually change processes. Automatically recalls settings from the last process used.
Miller Regulated Metal Deposition (RMD)
 -  An advanced welding process developed by Miller Electric. Also known as modified short-circuit MIG, it is a precisely controlled short-circuit transfer technology that improves welding quality and productivity on stainless steel pipe. See the Miller Pipeworx 400.
Miller SharpArc®
 -  Optimizes the size and shape of the arc cone, bead width and appearance, and puddle fluidity. Available on the Millermatic® 350/350P. A Miller Technology Exclusive.
Miller Sun Vision™
 -  This Miller Technology Exclusive allows easy reading of digital meters in direct sunlight or shade on Trailblazer® 275 DC and 302.
Miller SureStart™
 -  Provides consistent Axcess® arc starts by precisely controlling power levels for specific wire and gas combinations. A Miller Technology Exclusive.
Miller Syncro Start™
 -  This Miller Technology Exclusive allows selectable customized arc starts on Syncrowave® 200, 250 DX and 350 LX.
Miller Tip Saver Short Circuit Protection™
 -  Shuts down output when the MIG contact tip is shorted to the work, on the Millermatic® 135 and 175. Extends contact tip life and protects machine. A Miller Technology Exclusive.
Miller Torch Detection™
 -  Syncrowave® 250 DX and 350 LX detect if TIG torch is water- or air-cooled. A Miller Technology Exclusive.
Miller Tri-Cor™ Technology
 -  Stabilizer design on the Bobcat™ 250 that delivers smoother welds and decreased spatter with E7018 electrodes, without sacrificing performance with E6010 electrodes. A Miller Technology Exclusive.
Miller Versa-Pulse™
 -  Versa-Pulse™ is a fast, low-heat, low-spatter process designed for materials up to 1/4 inch and is great for gap filling.
Miller WaveWriter™ File Management
 -  This Miller Technology Exclusive includes all Axcess™ file management functions, plus a simple, graphical wave-shaping program for the most demanding pulsed MIG applications.
Miller Weld at Idle™
 -  Allows PipePro™ 304 to automatically weld at a quieter, lower RPM, using less fuel. When more output is required, the machine goes to high speed without a change in arc.
Miller Wind Tunnel Technology™
 -  Internal airflow on many Miller inverters, that protects electrical components and PC boards from contamination, significantly improving reliability. A Miller Technology Exclusive.
Miller X-Mode™
 -  Electromagnetically senses the weld to eliminate sunlight interference and continuously detects the arc even if sensors are blocked. Found on T94, Digital Infinity, Digital Elite and Classic VSi welding helmets
Miller XMT 350 Series Multiprocess Welding Power Source
 -  DC18.93 Nov 2015 Legacy
XMT 350 VS 907224208 – 575V with Auto-Line™ (without 14-pin, Tweco® connectors)
XMT 350 CC/CV 907161 - 208–575V with Auto-Line™
XMT 350 CC/CV 907161-01-1 - 208–575V with Auto-Line™ and auxiliary power
XMT 350 CC/CV 907161-01-2 - 230–460V with Auto-Line™ and auxiliary power and CE
XMT 350 CC/CV 907161-01-4 - 208–575V with Auto-Line™ and Tweco® connectors
XMT 350 MPa 907366 - 208–575V with Auto-Line™
XMT 350 MPa 907366-01-1 - 208–575V with Auto-Line™ and auxiliary power
XMT 350 MPa 907366-002 - 230–460V with Auto-Line™ and auxiliary power and CE
XMT 350 MPa 907366-01-4 - 208–575V with Auto-Line™ and Tweco® connectors
XMT 350 VS ArcReach 907224002 - 208–575 V with Auto-Line™ and Tweco connectors
XMT 350 CC/CV ArcReach 907161032 - 208 – 575 V with Auto-Line™ and Tweco connectors
Miller XR-Aluma-Pro 15 ft. Air Push-Pull Gun 300782
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Miller XR-Aluma-Pro 15 ft. Air Push-Pull Gun 301568
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Miller XR-Aluma-Pro 25 ft. Air Push-Pull Gun 301569
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Miller XR-Aluma-Pro Lite Air Push-Pull Gun 300948
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Miller XR-Pistol-Pro 25 ft. Air Push-Pull Gun 300783
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Molten weld pool
 -  The liquid state of a weld prior to solidification as weld metal.
Non-Destructive Testing
 -  NDT involves the testing of welds without destroying the welds or parts. See Weld Quality Assurance
Nozzle
 -  A device which directs shielding media.
Open-Circuit Voltage (OCV)
 -  The difference of electrical potential between two terminals when no current is flowing in the welding circuit. Also known as no-load voltage, arc welding involves open circuit (when not welding) voltages from 20 volts to 100 volts. A welding machine that is turned on but not being used for welding at the moment will have an open-circuit voltage applied to the cables attached to the output terminals of the welding machine.
Overlap
 -  The protrusion of weld metal beyond the toe, face, or root of the weld.
Overspray
 - 
Overspray occurs during the spray application of paint, stain, or varnish, when the sprayed material goes beyond the intended target and paint is applied to other surfaces which were not intended to receive the paint. See the ArticlePaint Booth Renewal with Dry Ice Blasting
Pandjiris Alpha 5-3 Fixed-Base Positioner
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Pandjiris Beta 12.5-5 Fixed-Base Positioner
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Pandjiris Mini Pro Fixed-Base Positioner
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Pandjiris Mini Pro Weld Lathe
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Pandjiris Missouri Mule (MM) Series
 -  Turning rolls manufactured by Pandjiris with a capacity range of 30,000 lbs to 180,000 lbs. or more. Designed for heavy-duty use. Often used in combination with a manipulator for applications that require both circumferential and longitudinal automated welding.
Pandjiris Model 15-4 MVRHTFB Positioner
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Pandjiris Model A Quickset Gripper Chuck
 -  Clamping Range: 1.5" to 31 1/4", Weight Capacity: 3,000 lb., Allowable Overhang: 5"
Holding Capacity (outside clamping) Dia.: 1.5" to 27 5/8", Holding Capacity (inside clamping) Dia.: 5.5" to 31 1/4", Gripper Jaws: (3) Serrated and Hardened Self-Centering
Gripper Jaw Adjustment: Single Point Screw/Ball Lock Pin, Gripper Adj. Force (max. allowable): 1380 in-lb. (69 lb. on 20" handle)
Jaws Attachment: Reversible, Quickset Ball Lock Pin, Mounting Holes: (3) for 5/8" Socket Head Cap Screws on 19-1/4" B.C.D., Weight: 250 lb.
Pandjiris Model B Quickset Gripper Chuck
 -  Clamping Range: 1.5" to 44 3/8", Weight Capacity: 3,000 lb., Allowable Overhang: 5"
Holding Capacity (outside clamping) Dia.: 1.5" to 40.75", Holding Capacity (inside clamping) Dia.: 5.5" to 44 3/8", Gripper Jaws: (3) Serrated and Hardened Self-Centering
Gripper Jaw Adjustment: Single Point Screw/Ball Lock Pin, Gripper Adj. Force (max. allowable): 1380 in-lb. (69 lb. on 20" handle)
Jaws Attachment: Reversible, Quickset Ball Lock Pin, Mounting Holes: (3) for 5/8" Socket Head Cap Screws on 19-1/4" B.C.D., Weight: 350 lb.
Pandjiris Model B60 Quickset Gripper Chuck
 -  Clamping Range: 1.5" to 68", Weight Capacity: 3,000 lb., Allowable Overhang: 5"
Holding Capacity (outside clamping) Diameter: 1.5" to 63.5", Holding Capacity (inside clamping) Diameter: 4.5" to 68", Gripper Jaws: (3) Serrated and Hardened Self-Centering
Gripper Jaw Adjustment: Single Point Screw/Ball Lock Pin, Gripper Adj. Force (max. allowable): 1380 in-lb. (69 lb. on 20" handle)
Jaws Attachment: Reversible, Quickset Ball Lock Pin, Mounting Holes: (3) for 5/8" Socket Head Cap Screws on 19-1/4" B.C.D., Weight: 383 lb.
Pandjiris Model C48 Quickset Gripper Chuck
 -  Clamping Range: 3" to 48", Weight Capacity: 7,500 lb., Allowable Overhang: 5"
Holding Capacity (outside clamping) Diameter: 3" to 48", Holding Capacity (inside clamping) Diameter: 7" to 52", Gripper Jaws: (3) Serrated and Hardened Self-Centering
Gripper Jaw Adjustment: Single Point Screw/Ball Lock Pin, Gripper Adj. Force (max. allowable): 1800 in-lb. (60 lb. on 30" handle)
Jaws Attachment: Reversible, Quickset Ball Lock Pin, Mounting Holes: (3) for 3/4" Socket Head Cap Screws on 28-7/8" B.C.D., Weight: 711 lb.
Pandjiris Model C60 Quickset Gripper Chuck
 -  Clamping Range: 3" to 68", Weight Capacity: 7,500 lb., Allowable Overhang: 5"
Holding Capacity (outside clamping) Diameter: 3" to 65", Holding Capacity (inside clamping) Diameter: 7" to 69", Gripper Jaws: (3) Serrated and Hardened Self-Centering
Gripper Jaw Adjustment: Single Point Screw/Ball Lock Pin, Gripper Adj. Force (max. allowable): 1800 in-lb. (60 lb. on 30" handle)
Jaws Attachment: Reversible, Quickset Ball Lock Pin, Mounting Holes: (3) for 3/4" Socket Head Cap Screws on 28-7/8" B.C.D., Weight: 770 lb.
Pandjiris Model J15 Quickset Gripper Chuck
 -  Clamping Range: 1 1/2" to 15", Weight Capacity: 100 lb., Allowable Overhang: 1"
Holding Capacity (outside clamping) Dia.: 3/8" to 11 1/4", Holding Capacity (inside clamping) Dia.: 4 1/4" to 15", Gripper Jaws: (3) Self-Centering
Gripper Jaw Adjustment: Dual Lever/ Rotary Screw
Jaws Attachment: Reversible, Rotary Screw, Mounting Holes: (3) for 5/16" - 18 x 1 1/4" Socket Head Cap Screws on 4-3/4" B.C.D., Weight: 20 lb.
Pandjiris Model TJ20 Quickset Gripper Chuck
 -  Clamping Range: 1" to 20", Weight Capacity: 1,000 lb., Allowable Overhang: 5"
Holding Capacity (outside clamping) Dia.: 1" to 16 1/2", Holding Capacity (inside clamping) Dia.: 6 1/4" to 20", Gripper Jaws: (3) Serrated and Hardened Self-Centering
Gripper Jaw Adjustment: Single Point Screw/Ball Lock Pin, Gripper Adj. Force (max. allowable): 1300 in-lb.
Jaws Attachment: Reversible, Quickset Ball Lock Pin, Mounting Holes: (3) for 1/2" Socket Head Cap Screws on 15-3/8" B.C.D., Weight: 140 lb.
Pandjiris Piper Series
 -  Turning rolls manufactured by Pandjiris with a capacity range of 1,500 lbs. to 10,000 lbs: Mini Pipers, Piper 3, and Super Piper. Designed for smaller capacity applications.
Pandjiris Tanker Series
 -  Turning rolls manufactured by Pandjiris with a capacity range of 8,000 to 15,000 lbs.: Tanker 80/40 and Tanker 150/75. Designed to handle a wide range of diameter sizes. No wheel adjustments for different diameters.
Paralleling
 -  Running multiple power generators to form a large capacity power source with redundancy. Often used for mission critical operations such as oilfield and emergency backup power. More about paralleling generators.
Partial joint penetration
 -  Joint penetration which is less than complete.
Pass
 -  A single progression of a welding or surfacing operation along a joint, weld deposit, or substrate. The result of a pass is a weld bead, layer, or spray deposit.
Peel test
 -  A destructive method of inspection which mechanically separates a lap joint by peeling.
Peening
 -  The mechanical working of metals using impact blows.
Plano lens (eye protection)
 -  A lens which does not incorporate correction.
Plasma
 -  A gas that has been heated to an at least partially ionized condition, enabling it to conduct an electric current.
Plasma Arc Welding (PAW)
 -  An arc welding process which produces coalescence of metals by heating them with a constricted arc between an electrode and the workpiece (transferred arc) or the electrode and the constricting nozzle (non transferred arc). Shielding is obtained from the hot, ionized gas issuing from the orifice which may be supplemented by an auxiliary source of shielding gas. Shielding gas may be an inert gas or a mixture of gases. Pressure may or may not be used, and filler metal may or may not be supplied.
Plug weld
 -  A circular weld made through a hole in one member of a lap or T-joint fusing that member to the other. The walls of the hole may or may not be parallel and the hole may be partially or completely filled with weld metal. (A fillet welded hole or a spot weld should not be construed as conforming to this definition.)
Polarity
 -  Electrode welding polarity affects the penetration level of the weld. With most arc welding processes, DC+ (direct current electrode positive) polarity produces more weld penetration, because more arc energy is focused into the base plate. Conversely, DC- (direct current electrode negative) polarity produces less weld penetration, because more arc energy is focused into the electrode and not into the base plate. This is the case with the shielded metal arc welding (SMAW), gas metal arc welding (GMAW), flux cored arc welding (FCAW) and SAW processes. The exception is the gas tungsten arc welding (GTAW) process, in which the effect of polarity on penetration is opposite. With GTAW, DC- polarity results in more weld penetration (with DC+ polarity generally not used).
Porosity
 -  Cavity type discontinuities formed by gas entrapment during solidification.
Positioned weld
 -  a weld made in a joint which has been so placed as to facilitate making the weld. See: welding positioners.
Postheating
 -  The application of heat to an assembly after a welding, brazing, soldering, thermal spraying or cutting operation.
Postweld heat treatment
 -  Any heat treatment subsequent to welding.
Pounds Per Square Inch (psi)
 -  A measurement equal to a mass or weight applied to one square inch of surface area.
Power Efficiency
 -  How well an electrical machine uses the incoming electrical power.
Power Factor Correction
 -  Normally used on single-phase, constant current power sources to reduce the amount of primary amperage demanded from the power company while welding.
Preheat temperature
 -  A specified temperature that the base metal must attain in the welding, brazing soldering, thermal spraying, or cutting area immediately before these operations are performed.
Preheating
 -  The application of heat to the base metal immediately before welding, brazing, soldering, thermal spraying, or cutting. See > Induction Heating Equipment Used for Preheating