| 摘要 |
PROBLEM TO BE SOLVED: To provide a sliding member with areas having mutually distinct hardness on a sliding surface and can prevent damage on the sliding surface like a lack of film.SOLUTION: A sliding member is manufactured through a forming process for forming sliding surfaces (20, 31, 43, 60) including a first electric discharge surface treatment process to practice an electric discharge surface treatment to first treated areas (30, 32, 44) being parts of predetermined faces (18a, 68a) on base materials (18, 68). |
