The TIG-welding process.
Filler metal is added separately, which makes the process very flexible.
It is also possible to weld without filler material. AC TIG-welding usually uses argon as a shielding gas. The process is a multi purpose process, which offers the user great flexibility. By changing the diameter of the tungsten electrode, welding may be performed with a wide range of heat input at different thicknesses. AC TIG-welding is possible with thicknesses down to about 0,5 mm.