EFFECT OF PULSE PARAMETERS ON SURFACE FUSION OF STEEL BY TUNGSTEN INERT GAS PULSED ARCING

Somnath Basu, P.K.Ghosh, J.S.Saini

Abstract: Tungsten inert gas pulse arcing (TIGPA) has been employed at various arcing parameters keeping the net heat energy input constant for surface fusion of Martensitic stainless steel(SS-410) and High Carbon alloy steel(En-31). The process has ability to control the energy input and its distribution which significantly influences the melting and solidification behavior of base material. At different arcing parameters surfaces were fused. .Fused zone width and depth were measured. Ripples formed on fused surface were studied and their dimensions were measured to estimate cooling rates .Hardness of surface across arc travel direction were measured .A dimensionless parameter was used to find its relationship with all the measured and estimated data .

Keywords: TIG Pulse Arcing, Stainless Steel, High Carbon Steel, Fusion Zone

DOI: https://doi.org/10.15623/ijret.2017.0601004