PARAMETRIC OPTIMIZATION OF TIGWELDING TO DETERMINE WELDING STRENGTH OF S30430 STAINLESS STEEL

Pulsed TIG welding is one of the most widely used welding processes in the metal manufacturing industry. In any fusion arc welding process, the weld bead geometry plays an important role in determining the welding strength and mechanical properties of the weld joint. The prediction of welding strength together with the shape of the weld bead was accomplished taking into account of TIG welding process parameters such as welding current, arc length, welding speed. Full factorial design of experiment methodology was followed while selecting control factor. This paper present optimization of the pulsed TIG welding process parameter using Taguchi Philosophy. For the establishment of the optimum combination of the process parameter and depending upon the functional requirement of the welded joint, the acceptable welded joint should have maximum penetration, minimum bead width, minimum HAZ etc. Therefore there exists an increasing demand to evaluate an optimum parameter setting. Based on Taguchi approach the present study has been aimed at integrating statistical techniques into the engineering process. An experiment was conducted using different welding condition and a mathematical model was constructed using the data collected from the experiment based on Taguchi L27 orthogonal array, with three different levels of the parameter. The process parameter having higher Signal to Noise ratio will give optimum parameter.