2021 6th International Conference on Applied Mechanics and Structural Materials
Assoc. Prof. Akhilesh Kumar Singh

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Speech Title:

Research on recent advances development in the TIG welding process to improve weld quality, productivity and penetration


Abstract:

Tungsten Inert Gas (TIG) welding (also known as gas tungsten arc welding (GTAW), wolfram inert gas (WIG) and Argonarc or Heliarc welding, though, has many good features in its name and its applications in various fields but lacks penetration, which reduces its application in welding. Many research works have been carried out to overcome this limitation, of lack of penetration in TIG welding. Researchers throughout the world developed variants of TIG to improve the depth of weld penetration as well as weld quality to increase the production rate and its applications. For improving the productivity and reducing the energy consumption in all aspects of the TIG welding process, several researchers also developed several variants of TIG processes are pulsed current tungsten inert gas (PCTIG) welding, and high frequency pulsed TIG, activated flux tungsten inert gas (ATIG) welding, flux bound tungsten inert gas (FBTIG) welding, backing plate tungsten inert gas (BPTIG) welding, buried arc TIG, multi-cathode or twin electrode TIG, cold and hot wire feed in TIG, dual gas TIG, arc initiation and electrode development, square wave AC, and hybrid TIG welding, etc. This process is capable of producing continuous, intermittent or spots welds of almost all metals for normal fabrication as per weld required. It is also suitable for welding in all positions (such as flat (down hand), horizontal, vertical, overhead, and inclined positions. It was observed during the review, that TIG welding gives the best quality welds amongst the other arc welding processes due to recent developments that happened to improve the weld penetration with weld quality and its application in welding.