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.
An arc welding process that uses an arc between a non-consumable tungsten electrode and the weld pool (base metal of strip). A high quality full fusion weld is achieved using no filler metal. The GTAW process is also commonly referred to as Tungsten Inert Gas (TIG) welding.
A very precise arc welding process that uses a nonconsumable tungsten electrode. It is also referred to as GTAW or TIG welding.
An arc-welding process wherein coalescence is produced by heating with an arc between a single tungsten (nonconsumable) 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; also called TIG welding.
A welding process in which an electrical arc is struck at the tip of a tungsten stylus by completing an electrical circuit through the piece being welded and the stylus. Simultaneously, inert gas flows over the stylus and floods a few square centimeters of work area to prevent the problems that can arise from oxidation. While the electrical arc is being maintained as a heat source, filler rod is added to the weld bead area to join the two pieces of parent metal. One unique feature of this welding process is the use of a foot pedal to boost power to the electrical arc. This foot pedal is what makes it possible to weld highly heat conductive metals such as stainless steel and aluminum. This type of welding process is used where a neat clean weld bead is desired, where deep penetration is needed, where oxidation presents problems, where speed in production is necessary, or where robotics will be used. synonym: TIG welding (Tungsten Inert Gas), Heli-Arc OAW
Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a nonconsumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by a shielding gas (usually an inert gas such as argon), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it. A constant-current welding power supply produces energy which is conducted across the arc through a column of highly ionized gas and metal vapors known as a plasma.