Title:
表面被覆切削工具
Document Type and Number:
Japanese Patent JP6604553
Kind Code:
B2
Abstract:
Provided is a surface-coated cutting tool having excellent welding resistance and fracturing resistance during cutting work of carbon steel, alloy steel, and the like, and also having excellent chipping resistance and fracturing resistance particularly during intermittent cutting and the like. In a surface-coated cutting tool in which a hard coating layer including at least a lower layer and an upper layer is formed on a surface of a cutting tool body, (a) the lower layer is formed of one layer or two or more layers of a TiC layer, a TiN layer, a TiCN layer, a TiCO layer, and a TiCNO layer, and an Al 2 O 3 layer as the upper layer is formed on a surface of the lower layer, and (b) on at least an outermost surface of the upper layer of a rake face, a zirconium oxide layer is formed in an area ratio of 30% to 70%, the Al 2 O 3 layer on the rake face has a tensile residual stress of 10 to 200 MPa and a surface roughness Ra is 0.25 µm or less.
Inventors:
Tsuchihashi
Miyashita Dai
Kawada Yoshinori
Akira Akira
Takuji Saeki
Hiroshi Omori
Hara
Shibuya Sachi
Miyashita Dai
Kawada Yoshinori
Akira Akira
Takuji Saeki
Hiroshi Omori
Hara
Shibuya Sachi
Application Number:
JP2016069629A
Publication Date:
November 13, 2019
Filing Date:
March 30, 2016
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
B23B27/14; C23C16/32; C23C16/34; C23C16/36; C23C16/40
Domestic Patent References:
| JP2014530112A | ||||
| JP2011200953A | ||||
| JP2008886A | ||||
| JP2013132717A | ||||
| JP2007160460A | ||||
| JP200934766A | ||||
| JP2009220241A |
Attorney, Agent or Firm:
Kageyama Shuichi
Kurachi Yasuyuki
Yasushi Yamada
Kurachi Yasuyuki
Yasushi Yamada