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Title:
POWER SUPPLY FOR DISCHARGE SURFACE TREATMENT AND DISCHARGE SURFACE TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2001/055481
Kind Code:
A1
Abstract:
A first pulse width T1 and a first peak value Ip1 are determined so that the current density between an electrode (1) and a work (2) is in such a predetermined range that the release of an electrode material is controlled. During the first pulse width T1, after the diameter of the discharge arc column (10) reaches a sufficient value, the discharge current is increased to a second peak value Ip2 so that a predetermined amount of hard coating material is supplied by the release of the electrode material according to predetermined processing conditions during a second pulse width T2. Then a discharge is caused between the electrodes to efficiently form a hard coating (17) on the work (2). Thus the surface treatment cost is lowered and a dense hard coating (17) is formed on a work (2).

Inventors:
Goto, Akihiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Moro, Toshio (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Application Number:
PCT/JP2000/000303
Publication Date:
August 02, 2001
Filing Date:
January 24, 2000
Export Citation:
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Assignee:
MITSUBISHI DENKI KABUSHIKI KAISHA (2-3 Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Goto, Akihiro (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
Moro, Toshio (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8310, JP)
International Classes:
B23H1/02; B23H9/00; C23C8/36; C23C26/00; (IPC1-7): C23C26/00
Foreign References:
JPH0770761A1995-03-14
Attorney, Agent or Firm:
Miyata, Kaneo (Mitsubishi Denki Kabushiki Kaisha 2-3, Marunouchi 2-chome Chiyoka-ku Tokyo, 100-8310, JP)
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