What is Plasma Arc Welding?
Plasma arc welding is mostly used in medical, aerospace and automotive industries. Most of the automotive industries use plasma arc welding for body panels and exhaust system components. Gas tungsten arc welding is used for low speed welding, while laser beam welding is selected for high speed welding. Plasma arc welding (PAW) has higher welding speed compared to Gas tungsten arc welding (GTAW). PAW is an arc welding process. In plasma arc welding, electrode is recessed in a nozzle that serves to constrict the arc. PAW is not as fast as LBW, but the equipment cost is very less when compared to high-energy density equipment. Since PAW has lower current limit, along wit reliable arc starting, it is mostly used in medical and electronics industry. This type of welding is also used in automated applications because it has longer electrode life and no need for AVC. PAW is also used in many applications that require high current. Making welds with PAW in keyhole mode minimizes the need for c
