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Title:
CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2020/213262
Kind Code:
A1
Abstract:
A cutting tool including a rake face, a flank face, and a blade tip and comprising a base material and an AlTiN layer. The AlTiN layer includes cubic AlxTi1–xN crystal grains. The Al atomic ratio x is at least 0.7 and less than 0.95. The AlTiN layer includes a center section. When a color map is created on the basis of the crystal orientation being specified for each AlxTi1–xN crystal grain by using electron backscattering diffraction image analysis of a cross-section of the cut AlTiN layer, in a plane including the normal line of the rake face and the normal line of the flank face, the (200) plane oriented crystal grains in the center section of the rake face occupy an area ratio of at least 50% and less than 80% and the (200) plane oriented crystal grains in the center section of the blade tip occupy an area ratio of at least 80%.

Inventors:
KIDO YASUKI (JP)
PASEUTH ANONGSACK (JP)
OKUNO SUSUMU (JP)
IMAMURA SHINYA (JP)
Application Number:
PCT/JP2020/008146
Publication Date:
October 22, 2020
Filing Date:
February 27, 2020
Export Citation:
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Assignee:
SUMITOMO ELECTRIC HARDMETAL CORP (JP)
International Classes:
B23B27/14; B23B51/00; B23C5/16; B23D77/00; B23F21/00; B23G5/06; C23C16/34
Domestic Patent References:
WO2017122448A12017-07-20
Foreign References:
JP2003127003A2003-05-08
JP2003145313A2003-05-20
JP2014193521A2014-10-09
JP2017185609A2017-10-12
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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