APPLICATION OF TAGUCHI TECHNIQUE TO OPTIMIZE THE PROCESS PARAMETERS OF MIG WEDGING ON IS2062 STEEL

Abstract

This study focuses on optimizing welding parameters which affect the weldability of IS2062. Taguchi technique was employed to optimize the welding parameters. A series of experiments have been carried out. L₁₆ orthogonal array was applied for it. The statistical methods of signal to noise ratio (SNR) and the analysis of variance (ANOVA) are applied to investigate effects of welding parameters gas flow rate, wire feed speed, heat input and welding current on weldability. Tensile strength, impact strength, micro hardness, and mode of fracture were examined to determine the weldability. The results show that the welding current and welding voltage have significant effect whereas gas flow rate has insignificant effect on tensile strength of the weld and the optimum process parameters were found to be 27 V, 300 mm/min travel speed of wire and 10l/min gas flow rate for tensile strength.