Discharge surface treatment electrode and method of manufacturing the same

摘要

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 3 μm or less prepared by use of a jet mill and a powder of a metal with an average particle size of 3 μm or less manufactured through an atomization process or a chemical process; and subjecting the green compact to heat treatment.

主权项

1. A method of manufacturing 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 using discharge energy of an electric discharge caused between the electrode and the workpiece, the wear-resistant film being made of a material of the electrode or a substance obtained by a reaction of the material of the electrode with the discharge energy, the method comprising:
a slurry preparation step of preparing a slurry by mixing at least a powder of a Stellite alloy having a non-spherical particle shape with an average particle size of 3 μm or less prepared by use of a jet mill, a powder of a metal having a substantially spherical particle shape with an average particle size of 3 μm or less manufactured through an atomization process or a chemical process, and a solvent, wherein a mixing ratio by weight of the powder of the Stellite alloy having the non-spherical particle shape to the powder of the metal having the substantially spherical particle shape is within a range from 5:5 to 1:9; a granular powder preparation step of preparing granular powder by drying the solvent in the slurry after the slurry preparation step; a green compact preparation step of compression-molding a green compact out of the granular powder after the granular powder preparation step; and a heat treatment step of sintering the green compact by subjecting the green compact to heat treatment after the green compact preparation step.