Surface Engineering PTA System
01-29-2015, 04:37 PM,
Surface Engineering PTA System
Plasma transfer arc (PTA) welding is a process in which the joining of materials is produced by the heat of a constricted arc between an electrode and a base metal. In PTA welding a shielded arc is struck between a non-consumable electrode (tungsten) and the torch body. This arc then transforms an inert gas (argon) into plasma by heating it to a high temperature. The PTA welding process uses this plasma to transfer an electric arc to a work piece. Metal powder is metered under a positive pressure of argon flow, from the bottom of the torch into a pool of molten metal on the work piece surface.

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