In TIG (Tungsten Inert Gas) welding, an arc is drawn between a non-consumable tungsten electrode and the work piece. The electrode, the arc and the weld pool are protected from the atmosphere with an inert shielding gas. For manual welding the hardfacing material is in the form of a rod. Advantages of the TIG process include simple manual operation and good control of the welding arc. The process can also be mechanized, in which case a manipulator is used to move the work piece in relation to the welding torch and the hardfacing rod or wire.
Rods are also used for hardfacing with the Oxy-Acetylene welding process. With the correct operation, a very low level of iron dilution can be achieved in the overlay.
Rod is available in these standard diameters:
- 2.6 mm (3/32")*special order
- 3.2 mm (1/8")
- 4.0 mm (5/32")
- 5.0 mm (3/16")
- 6.4 mm (1/4")
- 8.0 mm (5/16")
|Rod inventory held in North America is typically in 36" lengths. In other countries (also available to special order in the USA and Canada) rod is available in these standard lengths:
- 350 mm (14")
- 500 mm (20")
- 970-1000 mm (38-40" or 3.2 - 3.3 ft)
- 1.2 metres (approx. 4 ft or 47")
- 1.5 metres (approx. 5 ft or 60")
- 2 metres (approx. 6.5 ft)
- 4 metres (approx. 13 ft)
Rod inventory held in North America is typically bundled in 20lb bundles. Elsewhere, rod is bundled in 10kg (22lb) bundles for the shorter lengths, while longer lengths or larger diameter may be bundled in 25kg (55lb) bundles. Rod can also be bundled to customer requirements.
To view product relevant to this process, please view our Welding Rod product page.
|Benefits of TIG Welding:
- Manual Operation
- Can be Mechanized
- Low Dilution