Plasma Arc Welding (PAW) - A Literature Review

Plasma arc welding is a non-conventional form of welding which can be applied to almost any existing metals. The various process parameters in plasma arc welding such as plasma gas flow rate, torch height, front weld width, back weld width etc. play an important role in the prediction of the weld geometry and quality. Several heat transfer models have been developed predict the Weld Geometry. The plasma arc welds showcase excellent mechanical properties. The wide range of applications of the plasma arc welding ranges from electronics to aerospace industries. This paper is literature review of various theoretical and experimental studies by different researchers over the years. A Section of the paper also deals with the comparative review of plasma arc welding with respect to other existing forms of welding processes, based on existing literature content.