Patent ID: 6294029
Filing Date: 2001-09-25
Classification: B23P,C21D,C23C

Abstract:
A surface treating method of treating a sliding member which slides on a counter member with a surface kept in contact with a surface of the counter member, said surface treating method comprising the steps of:pre-finishing said sliding member to a surface with a surface roughness lower than 0.2.mu..sup.m Ra;blasting pressurized fluid containing particles harder than said surface of said sliding member on said surface of said sliding member after finished by said pre-finishing to finish said sliding member to a surface with a surface roughness ranging approximately 0.01 to 1.0 .mu.mRa; andhardening said surface of said sliding member by penetrating and diffusing an element in an inside of said sliding member after blasting said pressurized fluid on said surface of said sliding member so as to form a hard compound surface layer whose surface hardness is higher than the surface hardness of said counter member.