Title:
SURFACE-COATED CUTTING TOOL HAVING HARD COATING LAYER EXCELLENT IN CHIPPING RESISTANCE
Document Type and Number:
Japanese Patent JP2019005855
Kind Code:
A
Abstract:
To provide a surface-coated cutting tool having excellent chipping resistance for a long period even after application thereof to a high-speed high-feeding intermittent cutting work for an alloy steel and the like.SOLUTION: In a surface-coated cutting tool in which a hard coating layer is provided to a tool substrate, the hard coating layer has a laminated structure of layers A and B which are different from each other in orientation of the NaCl type face-centered cubic structure having an average layer thickness of 1 to 20 μm and are (TiAl)(CN) and (TiAl)(CN), respectively (here, 0.60≤x, s≤0.95, 0≤y and t≤0.005). When measuring the angles of inclination made by the normal lines on the {100} plane and {111} plane of the layers A and B, respectively and partitioning the angle of inclination in a range of 0-45 degrees to the normal line every 0.25 degree pitch to compile the frequencies existing in respective partitions and to obtain an inclination angle frequency distribution, a maximum peak exists in an inclination angle section within a range of 0-12 degrees. The sum of the frequencies existing in the above range indicates a ratio of 40% or more of the whole frequency in the above inclination frequency distribution.SELECTED DRAWING: Figure 1
Inventors:
SATO KENICHI
ISHIGAKI TAKUYA
YANAGISAWA MITSUAKI
NISHIDA MAKOTO
ISHIGAKI TAKUYA
YANAGISAWA MITSUAKI
NISHIDA MAKOTO
Application Number:
JP2017123969A
Publication Date:
January 17, 2019
Filing Date:
June 26, 2017
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B23B27/14; B23C5/16; C23C16/34; C23C16/36
Domestic Patent References:
| JP2015163424A | 2015-09-10 | |||
| JP2016064485A | 2016-04-28 | |||
| JP2013248675A | 2013-12-12 | |||
| JP2016130343A | 2016-07-21 | |||
| JP6037255B1 | 2016-12-07 | |||
| JP2018144138A | 2018-09-20 | |||
| JP2018144139A | 2018-09-20 |
Foreign References:
| US20110033723A1 | 2011-02-10 |
Attorney, Agent or Firm:
Kageyama Shuichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi