Paper Details

A review of the resistance spot welding process is given, followed by a literature study of the known issueswhen welding galvanized coated steels and some of the methods explored to address those issues. This study presents asystematic approach to determine effect of process parameters on tip diameter as a primary & initial measure of weldquality and subsequently ultimate tensile strength. To achieve the objective an attempt has been made to select importantwelding parameters like weld current, weld cycle, hold time using quality tools, available literature and on scientificreasons. On the selected parameters, Experiment have been conducted as per Taguchi method and fixed the levels for theparameters. The experiment has three factors and all factors are at two levels. To have wide spectrum of analysis andvariability with time experiments are conducted. Optimum welding parameters determined by Taguchi method improvedelectrode tip life. Taguchi Analysis has been used for determining most significant parameters affecting the spot weldparameters. Study of the degradation mechanisms of the uncoated electrode revealed that electrode tip life was due tomore than the typical alloying and material loss as well as gross electrode deformation.

Vipul M. Patel, Dr. Mohammad Israr, “Optimization of Process Parameter for Electrode Tip Diameter in Resistance Spot Welding of Coated Steel”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 10, pp. 115-119, October 2017.