D.S. Sahota et al. / Mechanica Confab ISSN: 2320-2491 Vol. 2, No. 2, February-March 2013 67 STUDY OF EFFECT OF PARAMETERS ON RESISTANCE SPOT WELD OF ASS316 MATERIAL D.S. Sahota #1 , Ramandeep Singh &2 , Rajesh Sharma $3 , Harpreet Singh *4 #1 Indo Global Engineering College, Assistant Professor, Department of Mechanical Engineering, Punjab, India. &2 CT Engineering College, Associate Professor, Department of Mechanical Engineering, Punjab, India. $3 CCET, Sec-26, Chandigarh, Assistant Professor, Department of Mechanical Engineering, Punjab, India. *4 RBIEBT, Assistant Professor, Department of Mechanical Engineering, Punjab, India. Corresponding Email: ds_sahota@rediffmail.com Abstract The objective of this work is to study the effect of parameters on resistance spot weld of ASS316 material. In order to study the significance of the process parameters i.e. current, electrode force and weld cycles, towards the percentage improvement in material hardness. It is clear from the results that parameters significantly affect both the mean and the variation in the percentage improvement in Hardness values of the ASS316 material. The S/N ratio analysis suggests third level of weld current, third level of weld cycle and third level of electrode force as the best levels for maximum percentage improvement in hardness of ASS316 work-piece in spot welding operation. This study helps us to find out the optimum values for three parameters for Resistance Spot Welding for 0.5mm thickness of ASS316 sheet The average value of the response characteristic obtained through the confirmation experimentations lies within the 95% confidence level. Keywords: Resistance Spot Welding (RSW), Austenitic Stainless Steel (ASS) Analysis of variance (ANOVA),Electrode pressure, Electric Current, Number of Welding cycles. 1. Introduction Resistance Spot Welding (RSW) is a high speed process, wherein the actual time of welding is a small fraction of second and it is one of the cleanest and most efficient welding process that has been widely used in sheet metal fabrication. The high speed of process, the case of operation and its adaptability for automation in the production of sheet metal assemblies are its major advantages. Limitations of RSW are equipment cost and power requirements, difficulty of disassembly for maintenance or repair of RSW joints, and the nature of the design needed for the process (lap joints are required). Resistance Spot Welding has steadily gained importance over the years because of its ability to join the variety of