A guide to the use of tungsten electrodes for GTA welding
- Joining Services, Inc., Broomfield, CO (United States)
- Simplex Technologies, Inc., Portsmouth, NH (United States)
Unlike most arc welding processes, gas tungsten arc welding (GTAW) utilizes a nonconsumable electrode made of tungsten or a tungsten alloy. In the process, an arc is established between the tip of the tungsten electrode and the workpiece, and this arc provides the heat required for welding. Since the electrode does not melt, this welding process is often used to produced welds with no filler metal additions. Alternatively, filler metal may be added separately to the weld pool in the form of wire or consumable inserts. The purpose of this article is to provide basic information about tungsten electrodes used for GTAW. This includes classifications, types, sizes, current types and levels, and recommended uses and materials to be welded with each type, along with appropriate shielding gases.
- OSTI ID:
- 6612828
- Journal Information:
- Welding Journal (Miami); (United States), Vol. 74:1; ISSN 0043-2296
- Country of Publication:
- United States
- Language:
- English
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