Title:
SURFACE-COATED CUTTING TOOL OF WHICH HARD COATING LAYER EXHIBITS EXCELLENT ABRASION RESISTANCE AND CHIPPING RESISTANCE
Document Type and Number:
Japanese Patent JP2019010707
Kind Code:
A
Abstract:
To provide a coating tool which exhibits excellent abrasion resistance even when being used for high-speed intermittent cutting and the like, suppresses occurrence of chipping, defects, peeling and the like, and has excellent abrasion resistance in use over a long period.SOLUTION: A surface-coated cutting tool has a hard coating layer containing a composite nitride layer or a composite carbonitride layer of Ti and Al having an NaCl type face-centered cubic structure with an average layer thickness of 1.0-20.0 μm, where crystal orientation in crystal grains is analyzed, an average of orientation differences between a measuring point and an adjacent measuring point in the same crystal grain is calculated, and a KAM value at each of the measuring points is evaluated, a layer of which a ratio of the measuring point with the KAM value of less than 1 degree is 50% or more and a layer of which a ratio of the measuring point with the KAM value of less than 1 degree is 50% less are laminated, and when the layer is represented by a composition expression: (TiAl)(CN), the layer satisfies 0.60≤x≤0.95 and 0≤y≤0.005.SELECTED DRAWING: Figure 3
Inventors:
TATSUOKA SHO
SATO KENICHI
NISHIDA MAKOTO
SATO KENICHI
NISHIDA MAKOTO
Application Number:
JP2017128981A
Publication Date:
January 24, 2019
Filing Date:
June 30, 2017
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP
International Classes:
B23B27/14; B23C5/16; C23C16/34; C23C16/36
Domestic Patent References:
| JP2017080884A | 2017-05-18 | |||
| JP2016064471A | 2016-04-28 | |||
| JP2017080818A | 2017-05-18 |
Foreign References:
| WO2017038762A1 | 2017-03-09 | |||
| WO2017038840A1 | 2017-03-09 | |||
| WO2016045937A1 | 2016-03-31 | |||
| US20020086147A1 | 2002-07-04 |
Attorney, Agent or Firm:
Kageyama Shuichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi
Kurachi Yasuyuki
Yasushi Yamada
Kimura Koichi