A systematic overview on activated-Tungsten inert gas welding

An advanced type of Tungsten Inert Gas (TIG) welding called Activated Tungsten Inert Gas welding (or A-TIG welding) was developed to subdue the several limitations in TIG welding. The experimental set up for A-TIG welding is the same as that of TIG welding except that an activating flux powder in a...

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Bibliographic Details
Published in:Welding international 2022-10, Vol.36 (10), p.597-615
Main Authors: Vysakh, K. B., Mathiazhagan, A., Krishna Prasad, S.
Format: Article
Language:English
Subjects:
A-TIG
arc constriction
flux
Gas tungsten arc welding
Gas welding
Inert gas welding
Marangoni convection
penetration depth
Rare gases
Weld lines
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Summary:An advanced type of Tungsten Inert Gas (TIG) welding called Activated Tungsten Inert Gas welding (or A-TIG welding) was developed to subdue the several limitations in TIG welding. The experimental set up for A-TIG welding is the same as that of TIG welding except that an activating flux powder in a paste form is coated on the weld line preceding TIG welding. The penetration in A-TIG technique is reported to be twice or thrice that of the TIG welding process. Therefore, research is continuously progressing over the years, validating the possibility of applying A-TIG welding to various types of materials using different fluxes. Owing to this, in this paper, a detailed review is made covering multiple aspects of the A-TIG welding process starting from its evolution to the latest advancements achieved. This review categorizes different types of studies performed in A-TIG welding so as to get an explicit outlook of the implementation of A-TIG welding in different aspects. The shortcomings of various researches conducted are suggested, and the future scope of investigations on A-TIG welding is also raised in detail.
ISSN:0950-7116
1754-2138
DOI:10.1080/09507116.2022.2138795