Abstract
The tool life in cutting sintered steel is shorter than that in cutting melted steel, such as carbon steel. In order to determine an effective coating film for cutting sintered steel with a coated cemented carbide tool, tool wear was experimentally investigated. The work materials used were hardened sintered steel and sintered stainless steel. Two kinds of sintered steels were turned with four kinds of physical vapor deposition (PVD) coated cemented carbide tools. The coating films used were TiN coating film, (Ti, Al)N coating film and (Ti, W, Si)N coating film.
The following results were obtained: (1) In cutting two kinds of sintered steel, namely hardened sintered steel and stainless sintered steel, the wear progress of (Ti, W, Si)N coated cemented carbide tool was the slowest. (2) The main wear mechanism of three coated cemented carbide tools was the abrasive wear.
