Effect of A-TIG Welding Process on the Weld Attributes of Type 304LN and 316LN Stainless Steels
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JMEPEG DOI: 10.1007/s11665-017-2517-x
Effect of A-TIG Welding Process on the Weld Attributes of Type 304LN and 316LN Stainless Steels M. Vasudevan (Submitted August 21, 2015; in revised form September 12, 2016) The specific activated flux has been developed for enhancing the penetration performance of TIG welding process for autogenous welding of type 304LN and 316LN stainless steels through systematic study. Initially single-component fluxes were used to study their effect on depth of penetration and tensile properties. Then multi-component activated flux was developed which was found to produce a significant increase in penetration of 10-12 mm in single-pass TIG welding of type 304LN and 316LN stainless steels. The significant improvement in penetration achieved using the activated flux developed in the present work has been attributed to the constriction of the arc and as well as reversal of Marangoni flow in the molten weld pool. The use of activated flux has been found to overcome the variable weld penetration observed in 316LN stainless steel with
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