Parametric Study of Dissimilar Material on Gas Tungsten Arc Welding

Gas Tungsten Arc Welding (GTAW) uses a non-consumable tungsten electrode to produce the weld joint. The properties of the welded joints are affected by a large number of welding input parameter such as welding current waveform, welding current, welding speed and gas flow rate, these parameters plays a very significant role in determining the quality of a weld joint. In this work butt weld joint of Copper and Stainless Steel (SS304) is obtained by using autogenous GTAW process. The trial runs had been conducted to find out optimum range of process parameters. Four parameters such as welding current, welding speed, welding torch angle and gas flow rate are considered. The effect of these parameters on mechanical properties such as tensile strength, impact strength, bend strength and hardness of weld joint is analyzed.