DISCHARGE SURFACE TREATMENT ELECTRODE AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: KURITA, SATOSHI, NOMURA, KYOUHEI, HASEGAWA, MASANOBU, YOSHIZAWA, HIROKI, SHIMODA, YUKIHIRO, YUNOKI, NOBUHIKO, WATANABE, MITSUTOSHI
• Format: Patent
• Language: English; French; German
• Published: 22.02.2012
• Subjects: ALLOYS; CASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER; WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL

A discharge surface treatment electrode used in discharge surface treatment for forming a wear-resistant film on a treatment target surface of a workpiece by use of the discharge energy of electric discharges caused between the electrode and the workpiece, the film being made of a material of an electrode or a substance obtained by a reaction of the material of the electrode with the discharge energy. The discharge surface treatment electrode is formed by: compression-molding a mixed powder into a green compact, the mixed powder being formed from a powder of a Stellite alloy with an average particle size of 3µm or less prepared by use of a jet mill and a powder of a metal with an average particle size of 3µm or less manufactured through an atomization process or a chemical process; and subjecting the green compact to heat treatment.