Title:
Diamond-coated cemented carbide cutting tool
Document Type and Number:
Japanese Patent JP6330999
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress the propagation of cracks of a diamond-coated cemented carbide cutting tool, and improve chipping resistance and defect resistance in the high feed cutting of CFRP or the like.SOLUTION: Provided is a diamond-coated cemented carbide cutting tool comprising WC cemented carbide as a tool base body, configured so that (a) a TaC, NbC thickened region surrounded by WC particles is formed in a depth region of up to 6 μm from a surface of the tool base body, an interior of the TaC, NbC thickened region comprising one or two types of TaC and NbC and 1.0 mass% of Co, (b) the TaC, NbC thickened region has an average length of 2 to 6 μm in a depth direction and an average width of 2 to 6 μm, (C) the TaC, NbC thickened region has a generation density of 3000 to 15000/mm, and (d) a Co deficient region is formed adjacent to the TaC, NbC thickened region, a Co amount by which Co is removed by etching being 1.0 mass% or less.
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Inventors:
Takashima Hideaki
Hidemitsu Takaoka
Hidemitsu Takaoka
Application Number:
JP2014040105A
Publication Date:
May 30, 2018
Filing Date:
March 03, 2014
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
B23B27/14; B23B27/20; B23B51/00; B23C5/16; C22C29/08; C23C16/27
Domestic Patent References:
| JP2001293603A | ||||
| JP3115571A | ||||
| JP2004256861A | ||||
| JP2000144451A | ||||
| JP6081072A | ||||
| JP2015127092A | ||||
| JP2012193406A | ||||
| JP4588453B2 |
Foreign References:
| US20040141867 | ||||
| US5560839 |
Attorney, Agent or Firm:
Kageyama Shuichi
Masayuki Miyake
Kurachi Yasuyuki
Kazuo Tomita
Masayuki Miyake
Kurachi Yasuyuki
Kazuo Tomita