Title:
放電加工用電極及び放電加工法
Document Type and Number:
Japanese Patent JP4575134
Kind Code:
B2
Abstract:
A sintered electrode for electric discharge machining comprises a continuous phase consisting of a conductive region ( 3 ), and a dispersed phase consisting of microscopic polycrystalline diamond ( 2 ) dispersed in the continuous phase. The conductive region ( 3 ) is cobalt, nickel, cobalt nickel alloy or cemented carbide and imparts conductivity to the electrode ( 1 ). The microscopic polycrystalline diamond ( 2 ) imparts excellent mechanical strength and thermal diffusion to the electrode ( 1 ). The electrode ( 1 ) and the workpiece ( 5 ) are connected to a power supply (V 1 ) in reverse polarity and a current pulse having ON-time of 60 mu seconds or less and 1 mu second or more and peak of 15 A or less and 1 A or more is supplied to the electrode ( 1 ) from the power supply (V 1 ).
More Like This:
Inventors:
Nabekura Shinka
Sano Sadao
Sano Sadao
Application Number:
JP2004367128A
Publication Date:
November 04, 2010
Filing Date:
December 20, 2004
Export Citation:
Assignee:
Sodick Co., Ltd.
International Classes:
B23H1/06; C22C26/00
Domestic Patent References:
| JP5277936A | ||||
| JP58199776A | ||||
| JP5891056A |
Attorney, Agent or Firm:
Toyohiro Mizuno