Tungsten inert gas welding (TIG)
An inert gas welding process characterised by its constant-current supply, a non-consumable tungsten electrode, an electric arc, and a weld pool of molten metal that is easy to control.
Only inert gases/gas mixtures are used as shielding gases. The filler metal is supplied to the weld pool manually using a filler rod or as hot wire during automatic mode.
The use of preheated weld wire (hot wire) and potential narrow gap welding provides a considerable improvement of the deposition rate and increases the efficiency during the automated process.