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Title:
SURFACE COATED CUTTING TOOL AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/037648
Kind Code:
A1
Abstract:
In a surface coated cutting tool provided with a substrate and a coating formed on the substrate, the substrate is a cemented carbide or cermet, and the surface of the substrate includes a rake face, a flank face, and a cutting edge which connects the rake face and the flank face. In the substrate, the oxygen concentration at a depth position of 0.4 μm from the cutting edge is less than or equal to 1 at%. The coating includes a hard layer, and the absolute value of the compressive stress of the uppermost layer of the hard layer is greater than or equal to 1.5 GPa.

Inventors:
IMAMURA, Shinya (776 Aza Naie, Naie-cho, Sorachi-gu, Hokkaido 04, 〒0790304, JP)
KANAOKA, Hideaki (776 Aza Naie, Naie-cho, Sorachi-gu, Hokkaido 04, 〒0790304, JP)
PASEUTH, Anongsack (776 Aza Naie, Naie-cho, Sorachi-gu, Hokkaido 04, 〒0790304, JP)
ONO, Satoshi (776 Aza Naie, Naie-cho, Sorachi-gu, Hokkaido 04, 〒0790304, JP)
YOSHIMURA, Kouhei (776 Aza Naie, Naie-cho, Sorachi-gu, Hokkaido 04, 〒0790304, JP)
Application Number:
JP2017/019484
Publication Date:
March 01, 2018
Filing Date:
May 25, 2017
Export Citation:
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Assignee:
SUMITOMO ELECTRIC HARDMETAL CORP. (1-1 Koyakita 1-chome, Itami-shi Hyogo, 16, 〒6640016, JP)
International Classes:
B23B27/14; B23B51/00; B23C5/16; B23D77/00; B23F21/00; B23G5/06; B24B3/34
Domestic Patent References:
WO2016017790A12016-02-04
Foreign References:
JP2009006439A2009-01-15
US7838132B22010-11-23
JP2007283478A2007-11-01
JP2009191308A2009-08-27
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Central Tower, 2-7 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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