Title:
SURFACE-COATED CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2020/166683
Kind Code:
A1
Abstract:
The present invention provides a surface-coated cutting tool that has a hard coating layer measuring 1.0-20.0 μm in average layer thickness, in which a composite nitride layer is represented by (Ti(1 - x)Alx)N (0.60 ≤ x ≤ 0.95) and has: a layer comprising at least 30% NaCl-type crystal grains of a face-centered cubic structure in which the angle formed between a normal to the {111} plane and a normal to a surface of a tool substrate is 10° or less; and a layer that is continuously provided from an edge ridge (3) toward a flank surface (1)/rake surface (2) between a point that is never more than 50 μm from the edge ridge (3) and a most-distant point at 100-500 μm, and that, in a region of at least 50 μm within 50-500 μm extending from the edge ridge (3) in the direction heading away from the flank surface (1)/rake surface (2) starting from the most-distant point, is at least 30% NaCl-type crystal grains of a face-centered cubic structure in which the angle formed between a normal to the {100} plane and a normal to the surface of the tool substrate is 10° or less.
Inventors:
SONE TATSUYA (JP)
YAMAGUCHI KENJI (JP)
YAMAGUCHI KENJI (JP)
Application Number:
PCT/JP2020/005695
Publication Date:
August 20, 2020
Filing Date:
February 14, 2020
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
B23B27/14; B23C5/16; C23C14/06; C23C16/34
Foreign References:
| JP2017113835A | 2017-06-29 | |||
| JP2019005855A | 2019-01-17 | |||
| JP2018164961A | 2018-10-25 | |||
| JP2015163424A | 2015-09-10 | |||
| US20090226716A1 | 2009-09-10 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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