Definitions for "GAS TUNGSTEN ARC WELDING"
Electric arc welding process, which uses an electrode, which cannot be destroyed, to maintain an arch which is surrounded by inert shielding gas. The weld wire is fed into the weld separately.
An arc welding process that produces coalescence of metals by heating them with an arc between a tungsten (nonconsumable) electrode and the work. Shielding is obtained from a gas or gas mixture. Pressure may or may not be used and filler material may or may not be used. (This process is sometimes called TIG (Tungsten Inert Gas) welding, a nonpreferred term).
TIG welding is normally performed with alternating current electricity, with argon as the shielding gas. The electrode is of a non-melting type. Pure wolfram or wolfram alloys are usually used as electrode material. The TIG method is used for manual and mechanical welding and is suitable for thicknesses above 0.5 mm.