argon arc welding
Argon arc welding or the gas tungsten arc welding (GTAW), is also known as tungsten inert gas (TIG) welding (Schweissen), is used as an arc welding process that uses a nonconsumable tungsten electrode to produce the weld. The welding area has to be 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 is also present which supplies and is conducted through the arc through a column of highly ionized gas and metal vapors known as a plasma.Argon arc welding is used for lighter alloys such as f stainless steel and light metals such as aluminum, magnesium, and copper alloys.
