Paper Title
Effect of Developed Activated Flux on Properties of Gas Tungsten Arc Welded Thick Gauge Section of Steels

Tungsten inert gas (TIG) welding widely known for the precise weld joint of the components due to controlled heat input lacks the maximum weld penetration it can provide in a single pass for the steel joint, offers low -productivity and cast to cast variation . Weld penetration being the most important parameter quantified by the aspect ratio (depth to width), decides the number of passes required to weld a certain thickness of material. To overcome these limitations, optimized mixture of certain oxides was developed for welding of 15mm plates of ASS which is applied by a paint brush followed by TIG welding. Weld fusion zone having full penetration in a single pass achieving the aspect ratio even more than 1 was observed. Various metallurgical and mechanical properties like hardness, toughness and tensile strength has been studied to understand the effectiveness of activated flux GTAW of steels. Keywords - TIG Welding ,Austenitic Stainless Steel, Activated Flux, Aspect Ratio, Arc Constriction, Marangoni Flow.