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Patent Searching and Data


Title:
SURFACE COATED CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2017/073653
Kind Code:
A1
Abstract:
This surface coated cutting tool comprises a hard coating layer on the surface of the tool base body, which is made from any of a tungsten carbide-based cemented carbide, a TiCN-based cermet, a cubic boron nitride sintered body, and a high-speed tool steel, wherein a lower layer is a composite nitride layer satisfying 0.3 ≦ α ≦ 0.5 and 0.01 ≦ β ≦ 0.10 when represented by the compositional formula (Al1- α - βTiαSiβ)N (wherein α and β are atomic ratios), an upper layer comprises crystals primarily having a hexagonal structure and satisfies 0.15 ≦ a ≦ 0.40, 0.05 ≦ b ≦ 0.20 and 0.005 ≦ c ≦ 0.05 when represented by the compositional formula (Al1- a-b-cCraSibCuc)N (wherein a, b and c are atomic ratios), and, in the upper layer, the half value width of the diffraction peak in the (110) plane present in the range in which 2θ is between 55° and 65° calculated by x-ray diffraction is 1.0-3.5°.

Inventors:
OGAMI TSUYOSHI (JP)
HASHIMOTO TATSUO (JP)
ICHIMIYA NATSUKI (JP)
Application Number:
PCT/JP2016/081852
Publication Date:
May 04, 2017
Filing Date:
October 27, 2016
Export Citation:
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Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
B23B27/14; B23B51/00; B23C5/16; C23C14/06
Foreign References:
JP2009039838A2009-02-26
JP2008073800A2008-04-03
Other References:
See also references of EP 3369503A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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