To provide a surface-coated cutting tool in which a hard coating layer shows an excellent chipping resistance in heavy cutting of a difficult-to-cut material.
The surface-coated cutting tool is configured by forming the hard coating layer on the surface of the base body of the tool, the hard coating layer which is composed of, (a) a lower layer having a mean layer thickness of 1 to 5 m and composed of a composite nitride layer of Cr, Al (and M) satisfying the following composition formulas: (Cr1-XAlX)N or ((Cr1-ZMZ)1-XAlX)N, where M shows one or two or more additive components selected from elements of 4a, 5a, 6a groups, Si, B, Y, in the periodic table except for Cr, and X satisfies 0.45X0.75, and Z satisfies 0.01Z0.25, (b) an intermediate layer composed of a vanadium nitride layer having a mean layer thickness of 0.4 to 2 m, and (c) the upper layer composed of a vanadium oxide layer having a mean layer thickness of 0.4 to 2 m.
TANAKA YUSUKE
SATO KAZUNORI
MASUNO SATOYUKI
OGAMI TSUTOMU
| JP2006051510A | 2006-02-23 | |||
| JPH10158861A | 1998-06-16 | |||
| JPH0941127A | 1997-02-10 | |||
| JP2004337988A | 2004-12-02 | |||
| JP4747719B2 | 2011-08-17 | |||
| JP4747718B2 | 2011-08-17 |
Kutaro Kamoi
Kageyama Shuichi
Next Patent: SURFACE COATED CUTTING TOOL HAVING HARD COATING LAYER SHOWING EXCELLENT CHIPPING RESISTANCE IN HEAVY...