Productivity improvement in butt joining of thick stainless steel plates through the usage of activated TIG welding

Abstract Activated tungsten inert gas (A-TIG) welding is one variant of conventional TIG where a thin layer suitable activating flux deposited on the parent components prior to constituting arc in order harness enhanced penetration. Despite several benefits, industries are still reluctant overwhelmingly using this new variant. This article attempts highlight productivity benefits employing A-TIG either together with or superseding during butt joining 10-mm-thick AISI-316L austenitic stainless steel components. Initially, three single-component fluxes (Cr 2 O 3 , Fe and SiO ) tested forehand technique under varying currents but straight polarity. Filler rod having similar metallurgical composition also delivered homogeneous welding. The extent capability each analysed by comparing weld bead geometrical parameters (penetration, puddle width, reinforcement) same obtained set parameters. While found capable enhancing penetration reducing width heat affected zone, Cr failed exhibit better performance. further demonstrates time saving that can be adopting flux-assisted for plates. When from both faces allowed, about 70% less desired if combination employed rather than only If face then usage reduce 33%.