Electrode for electric discharge surface treatment, electric discharge surface treatment method and electric discharge surface treatment apparatus
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United States of America Patent
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May 26, 2009
Grant Date -
Sep 29, 2005
app pub date -
Jul 30, 2003
filing date -
Jul 30, 2002
priority date (Note) -
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Abstract
A method, apparatus, and electrode for electric discharge surface treatment. The electrode is a green compact made by molding metallic powers or metallic compound powders, the green compact being heat treated and used for electric discharge surface treatment in which a pulsed electric discharge is generated between the electrode and a work in a dielectric fluid to form by the electric discharge energy on the surface of the work a coat of a material of the electrode or of a substance that is generated by a reaction of the electrode due to the electric discharge energy, wherein the electrode contains 40 volume % or more Co, Ni, or Fe. Thereby, a thick coat is formed by the in-liquid pulsed electric discharge treatment.
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