Title:
GRAPHITE-COPPER COMPOSITE ELECTRODE MATERIAL AND ELECTRODE FOR ELECTRICAL DISCHARGE MACHINING USING SAID MATERIAL
Document Type and Number:
WIPO Patent Application WO/2015/159709
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a graphite-copper composite electrode material which is capable of reducing electrode consumption to the practical level; and an electrode for electrical discharge machining, which uses this material. A graphite-copper composite electrode material which is obtained by impregnating pores of a base that is formed of a graphite material with copper, and which has an electrical resistivity of 2.5 μΩm or less, preferably 1.5 μΩm or less, and more preferably 1.0 μΩm or less. It is desirable that the anisotropy ratio of the base that is formed of a graphite material is 1.2 or less. It is desirable that the impregnation ratio (φ) of copper in the electrode material is 13% or more. It is desirable that the bulk density of the base that is formed of a graphite material is from 1.40 Mg/m3 to 1.85 Mg/m3 (inclusive).
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Inventors:
KANDA MASAO (JP)
OHTA NAOTO (JP)
SAITO KIYOSHI (JP)
OKADA MASAKI (JP)
ONISHI MOTOKI (JP)
NAMIKI TAKEYUKI (JP)
OHTA NAOTO (JP)
SAITO KIYOSHI (JP)
OKADA MASAKI (JP)
ONISHI MOTOKI (JP)
NAMIKI TAKEYUKI (JP)
Application Number:
PCT/JP2015/060308
Publication Date:
October 22, 2015
Filing Date:
April 01, 2015
Export Citation:
Assignee:
TOYO TANSO CO (JP)
International Classes:
C01B31/04; B23H1/06; B23H9/00; C04B41/88
Foreign References:
| JPH09175877A | 1997-07-08 | |||
| JP2000263497A | 2000-09-26 | |||
| JP2008240155A | 2008-10-09 | |||
| JP2004209610A | 2004-07-29 | |||
| JPH0732216A | 1995-02-03 | |||
| JP2004002096A | 2004-01-08 | |||
| GB959834A | 1964-06-03 | |||
| US3619286A | 1971-11-09 |
Other References:
See also references of EP 3133048A4
Attorney, Agent or Firm:
KITADAI, Tetsuo et al. (JP)
Tetsuo Kitadai (JP)
Tetsuo Kitadai (JP)
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