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Title:
ELECTRODE FOR RESISTANCE WELDING, METHOD FOR PRODUCING RESISTANCE WELDING ELECTRODE, RESISTANCE WELDING SYSTEM, AND RESISTANCE WELDING LINE
Document Type and Number:
WIPO Patent Application WO/2006/057052
Kind Code:
A1
Abstract:
Disclosed is an electrode for resistance welding having a first layer (2) composed of a coating film of a metal carbide and a second layer (3) composed of a coating film which is formed on the first layer (2) and mainly contains one of Cr (chromium), Ni (nickel), Fe (iron), W (tungsten), Mo and the like. The first layer (2) is formed on the surface of a resistance welding electrode by applying a voltage between the resistance welding electrode and a readily carbonizable metal powder, a powder compact made of a powder mainly containing a metal compound or a compact obtained by heat-treating the powder compact in a process liquid, thereby producing a pulse discharge and having the electrode material adhere to or carbonized on the surface of the resistance welding electrode.

Inventors:
Goto, Akihiro c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
Sugiura, Tadanao c/o Ryoden Koki Engineering Co. Ltd. (1071, Kami 5-chome, Higashiozone-cho, Kita-k, Nagoya-shi Aichi 23, 46208, JP)
Nakamura, Kazushi c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
Okane, Masahiro c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
Ochiai, Hiroyuki c/o Ishikawajima-Harima Heavy Industries Co. Ltd. (2-1, Ohtemachi 2-chom, Chiyoda-ku Tokyo 82, 10081, JP)
Application Number:
PCT/JP2004/017698
Publication Date:
June 01, 2006
Filing Date:
November 29, 2004
Export Citation:
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Assignee:
MITSUBISHI DENKI KABUSHIKI KAISHA (2-3 Marunouchi 2-Chome, Chiyoda-ku, Tokyo 10, 10083, JP)
ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD. (2-1 Ohtemachi 2-chome, Chiyoda-ku, Tokyo 82, 10081, JP)
Goto, Akihiro c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
Sugiura, Tadanao c/o Ryoden Koki Engineering Co. Ltd. (1071, Kami 5-chome, Higashiozone-cho, Kita-k, Nagoya-shi Aichi 23, 46208, JP)
Nakamura, Kazushi c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
Okane, Masahiro c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
Ochiai, Hiroyuki c/o Ishikawajima-Harima Heavy Industries Co. Ltd. (2-1, Ohtemachi 2-chom, Chiyoda-ku Tokyo 82, 10081, JP)
International Classes:
B23K11/30; C23C26/00
Attorney, Agent or Firm:
Takahashi, Shogo c/o Mitsubishi Denki Kabushiki Kaisha Corporate Intellectual Property Center (2-3 Marunouchi 2-chom, Chiyoda-ku Tokyo 10, 10083, JP)
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