Plasma power source SE PTA 350

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, and this arc 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 meta l on the workpiece surface. The torch is handheld or moved by a side -beam carriage over the workpiece, or the workpiece is rotated or moved under the torch, or a combination of both to produce a weld overlay deposit. The plasma arc deposit is fully dense and metallurgically bonded to the workpiece. One of the most important features of the PTA process is the control of dilution. PTA produces dilution as low as 5%, compared to 20-25% typically obtained when hardfacing by MIG and (TIG) processes, so it is possible to maintain the noble properties of deposit even in one single pass. SE PTA-350 Power Supply allows for any input voltage hookup (208–575 V) with no manual linking, providing convenience in any job setting. Ideal solution for dirty or unreliable power. Hight-Frequency arc starter for non-contact arc initiation. Provides more consistent arc starts and greater reliability compared to traditional HF arc starters.