| 摘要 |
PURPOSE:To improve intermittent cutting property, by specifying treating temp. and coated film thickness during chemical vapor deposition, in forming hard coated film on surface of hard sintered body of carbide, nitride, carbonitride of metals by plasma chemical vapor depositing method. CONSTITUTION:On surface of hard sintered alloy in which one or >=2 kinds among groups IVa, Va, VIa transition metals of the periodic table, and hard material such as carbide, nitride or carbonitride of B, Si are sintered with one or >=2 kinds among Fe, Co, Ni, Cu, Mo, W, Ti, Al as binding phase, thin film of Al2O3, ZrO2 and carbide, nitride, carbonitride of transition metals of group IVa, Va, VIa in periodic table is formed by 0.1-8mu thickness at 650-950 deg.C treating temp. by plasma chemical vapor depositing method. The titled long service life alloy for cutting having superior cutting property in continuous cutting of course and even in intermittent cutting such as milling, can be manufactured at a low cost. |
