Experimental Investigation of Tensile Shear Strength on Resistance Spot Welding of Stainless Steel AISI 304-Mild Steel 2062

Abstract

Resistance spot welding is one of the solid-state welding processes and simplest of all Resistance welding. A typical automobile requires 2000-5000 spot welds. In the manuscript, Stainless steel AISI304 and Mild steel 2062 were lap welded by using Resistance spot welding. The influence of various Resistance spot welding process parameters and their levels are considered, i.e. Weld power, Electrode force, Weld time, hold time, Diameter of electrode contact surface on welds were studied for responses parameter of Tensile shear strength. The selection of the process parameters and their levels were determined by conducting the pilot Experiment and literature review. Taguchi’s Orthogonal arrays (L18), signal-to-noise ratio and Analysis of variance (ANOVA) are used to find the optimal process parameter levels and to analyze the effect of the selected process parameters on the tensile shear strength of weld metals. The Confirmation test is conducted with an optimal level of selected parameters to validity the Taguchi’s Optimization method and optimize the input process parameters and output response factor