Characteristics of Plasma Arc Welding with Arc Wire Addition

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概要

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• A new plasma welding process with arc-wire addition is described. This paper deals with the characteristics of the current through the filler wire, observation of the metal transfer by the high-speed camera and its applications. The results obtained are as follows ; 1) In plasma arc welding with arc-wire addition, the deposition rate increases until it nearly equals that of the CO_2-arc welding. 2) When the constant voltage characteristic is used for the arc-wire power supply, I_w is regulated to an adequate current value automatically by the self adjusting action. 3) From high-speed films of the metal transfer it has been clarified that the molten filler wire transfers to the molten pool with streaming transfer just like the water flow and the liquid metal is constricted into several little droplets between the tip of the wire and the molten pool.

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著者

• TAGUCHI Hiroya

  Mechanical Engineering Research Laboratory Hitachi, Ltd.

• HANEDA Mitsuaki

  Mechanical Engineering Research Laboratory Hitachi, Ltd.

• IMANAGA Shoji

  Mechanical Engineering Research Laboratory Hitachi, Ltd.

• SEJIMA Itsuhiko

  Corporate Engineering Center Head Office Hitachi, Ltd.

関連論文

• Characteristics of Plasma Arc Welding with Arc Wire Addition

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