ELECTRIC DISCHARGE SURFACE TREATING ELECTRODE AND PRODUCTION METHOD THEREOF AND ELECTRIC DISCHARGE SURFACE TREATING METHOD

摘要

An electric discharge surface treating electrode (10) is formed by mixing cBN powder (11) with Co powder (12), the both being insulating hard substances, and the mixture is charged in a press die for compression molding, and electric discharge is generated between the electrode (10) and a work (16) by an electric discharge surface treating power supply device (17) to form a hard coat (20) which consists of a cBN-and-Co alloy and has a high hardness under a high-temperature environment on the work (16).