How Tig Welding Works. TIG generates heat via an arc of electricity jumping from a tungsten metal electrode to the metal surfaces you intend to weld - usually. The puddle is protected by the inert argon gas.
Ideally the process works like this. TIG stands for tungsten inert gas welding or sometimes this welding is known as gas tungsten arc welding. TIG Welding is one type of welding amongst a few choices you have - MIG Stick Oxyacetylene etc.
Generally speaking TIG welding is the process of fusing metal with metal.
Diagram shows how the TIG welding process works. TIG is short for Tungsten Inert Gas and it is a common type of welding for used for stainless steel aluminum titanium and other non-ferrous metals. In this welding a non-consumable electrode is used which does not melt. The supplied current form a spark between the tungsten electrode and the workpiece.