This is used to fuse metal in the joint area and produce a molten weld pool. The arc area is shrouded in an inert or reducing gas shield to protect the weld pool and the non-consumable electrode. The process may be operated autogenously (without filler), or filler may be added by feeding a consumable wire or rod into the established weld pool.
Properties of TIG Welding:
The addition of filler is optional.
Only inert or reducing gases can be used as the shielding gas.
TIG welding is a high quality, versatile and commonly-used process.
TIG is suitable for welding ferrous and non-ferrous materials.
The TIG process can be run on DC-, DC+, or AC.