Typically, a PTA equipment for powder hardfacing (Powder Plasma Arc Welding - in short P.P.A.W.) requires :
- Two stage power source, direct current - electrode negative (DC-EN), to supply the arcs;
- PTA torch to weld filler material in powder form;
- Hopper or Powder Dispenser to feed powders to the welding torch;
- Water cooler to remove the heat from the critical parts (anodic nozzle mainly);
- Positioner/manipulator for workpiece/torch movement;
- Welding accessories, such as torch oscillator, argon gas cylinders, welding cables, anodic nozzles, tungsten electrodes, shielding devices, a.s.o.
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