| A | B |
|---|
| contact tip | A device at the end of the gun tube of a welding gun that transfers current to a continuously fed welding electrode. |
| electrode extension | For wire feed welding, the length of unmelted electrode extending beyond the end of the contact tip. Sometimes called electrical stickout or e.s.o. |
| inert gas | A non-reactive shielding gas. A gas that normally does not combine chemically with the base metal or filler metal |
| MIG welding | A non-standard term for gas metal arc welding. MIG stands for metal inert gas. |
| nozzle | A device that directs shielding media. |
| purging | Cleaning or removing impurities from a device. A term generally used in welding with a shielding gas. The shielding gas cleans or purges the lines in which is flows prior to and post welding. |
| shielding gas | Protective gas used to prevent atmospheric contamination |
| spatter | metal particles expelled during fusion welding that do not form a part of the weld. |
| stickout | non-standard term for electrode extension. |
| stringer bead | A type of weld bead made without appreciable weaving motion. |
| travel angle | The angle less than 90 degrees between the electrode axis and a line perpendicular to the weld axis, in a plane, determined by the electrode axis and the weld axis. This angle can also be used to partially define the position of guns torches, rods and beams. |
| voltage | The “force” or “pressure” that pushes current through a conductor. Voltage is the variable in arc welding that is responsible for weld bead shape |
| weave bead | A type of weld bead made with transverse oscillation. |
| weld | A localized coalescence of metals or nonmetals produced either by heating the materials to the welding temperature, with or without the application of pressure, or by the application of pressure alone and with or without the use of filler metal |
| weld bead | A weld resulting from a pass. |
| welding wire | A form of welding filler metal, normally packaged as coils or spools, that may or may not conduct electrical current depending upon the welding process with which it is used. |
| wire feed speed | the rate of speed at which a filler metal is consumed in arc welding or thermal spraying. In arc welding, wire feed speed determines amperage |
| work angle | the angle less than 90 degrees between a line perpendicular to the major workpiece surface and a plane determined by the electrode axis and the weld axis. In a TA-joint or a corner joint, the line is perpendicular to the non-butting member. This angle can also be used to partially define the position of guns, torches, rods, and beams |
| tack weld | A weld made to hold parts of a weldment in proper alignment until the final welds are made. |
| short circuiting transfer | (arc welding) Metal transfer in which molten metal from a consumable electrode is deposited during repeated short circuits |
| quenching | Dipping a heated metal into water, oil, or other liquid for the purposes of cooling and/or obtaining a specific hardness |
| backhand welding | A welding technique in which the welding torch or gun is directed opposite to the progress of weld. Backhand welding is also referred to as dragging the electrode or down-hand welding. |
