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6. Derivative processes
6.1 Plasma welding
Main characters :
Electrode: non-fusible tungsten rod.
Protection: inert gas.
Type of current: alternating or direct current.
Metal contribution: no contribution or separate contribution.
Plasma welding (SP) derives from the TIG process in that it uses a special torch to transform a TIG arc with free ionization into a constricted or rigid arc, concentrated on its axis, highly directional and not very sensitive to the presence of the workpiece.
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Derivative processes
Arc welding application
