Title:
HARD METAL ALLOY AND CUTTING TOOL
Document Type and Number:
Japanese Patent JP2017088917
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hard metal alloy excellent in loss resistance and a cutting tool.SOLUTION: There is provided a hard alloy having a first hard phase which consists of WC particles, one or more kind of second hard phase which is difference from the first hard phase and consists of at least one metal selected from Group 4, 5 and 6 in the periodic table and at least one kind selected from C, N, O and B and a binding phase which contains at least one kind of iron group metal selected from Co, Ni and Fe and having average particle diameter of the WC particles of over 0.8 μm and 4.0 μm or less, de-β layer on a surface part and satisfying A/B≥1.5, where A is average thickness of the de-β layer and B is average crystal particle diameter of the binding phase in the de-β layer.SELECTED DRAWING: Figure 2
Inventors:
KIDO YASUKI
YAMAMOTO TSUYOSHI
TSUDA KEIICHI
YAMAMOTO TSUYOSHI
TSUDA KEIICHI
Application Number:
JP2015216875A
Publication Date:
May 25, 2017
Filing Date:
November 04, 2015
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
C22C29/08; B23B27/14; B23B51/00; B23C5/16; B23D77/00; B23G5/06; C04B35/56; C04B41/87
Attorney, Agent or Firm:
Hiroshi Yamano
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