Gas tungsten-arc welding

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Gas tungsten-arc welding

• In gas tungsten-arc welding (GTAW), formerly known as TIG welding (for “tungsten inert gas”), the filler metal is supplied from a filler wire.


• Because the tungsten electrode is not consumed in this operation, a constant and stable arc gap is maintained at a constant current level.


• The GTAW process is used for a wide variety of metals and applications, particularly aluminum, magnesium, titanium, and the refractory metals.


• It is suitable especially for thin metals.

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[caption id="attachment_391" align="aligncenter" width="581" caption="Figure shows the gas tungsten-arc welding process formerly known as TIG (for tungsten inert gas) welding. (b) Equipment for gas tungsten-arc welding operations."][/caption]

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