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Plasma Transferred Arc Welding (PTAW) process parameters were optimized for joining 316 stainless-steel plates to produce weld joints with maximum tensile strength, impact strength and hardness. Taguchi technique was applied for optimizing the selected welding parameters such as welding current (I), welding voltage (V) and powder feed rate (PFR). L9 orthogonal array was selected according to the aforementioned factors with three levels and experimental tests were performed. Signal-to-noise (SN) ratio was used to evaluate the experimental results. The results indicate that the welding voltage has the greatest infiuence on tensile &amp; impact strength and welding current is the significant factor for hardness.

Optimization of Current, Voltage and Powder Feed Rate on Mechanical Properties of Plasma Transferred Arc Welded SS 316 Joints