ELECTRIC DISCHARGE MACHINING METHOD FOR INSULATING CERAMICS

Japanese Patent JP3633989

B2

PURPOSE: To perform electric discharge machining insulating ceramics at a high speed in high accuracy irrespective of the kid of the insulating ceramics, by using ceramics formed with a metal layer wherein conductive carbide can be formed in a surface of the insulting ceramics.
CONSTITUTION: Electric discharge machining insulating ceramics 1 is performed in insulating oil. Here is thermally decomposed machining oil to produce carbon, and reaction of the carbon and an element, contained in the insulating ceramics 1 or conductive substance 2 to be capable of forming conductive carbide, is performed to form a conductive carbide layer. By sticking this layer to a surface of the insulating layer 1 or by impregnating it with this layer, electric discharge machining can be effectively performed. The conductive substance 2 only plays a role of trigger of starting an electric discharge, and maintaining it thereafter to make electric discharge machining capable is the conductive carbide. The element, contained in the insulating ceramics 1 to form the conductive carbide, is connected to carbon, produced by decomposing machining oil, to form conductive carbide.

WO/2020/041296	SYSTEMS AND APPARATUS FOR ADDITIVE MANUFACTURING
WO/2010/048339	HAND-HELD ELECTRO-DISCHARGE DEVICE

Koji Hemi
Fukuzawa Yasushi

JP6350295A

March 30, 2005

February 28, 1995

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Mitsubishi Electric Corporation
Japan Science and Technology Agency

B23H1/00; B23H9/00; H01B3/00; (IPC1-7): B23H1/00; B23H9/00

JP63150109A
JP8108318A
JP1188227A

Hideaki Kuwabara

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