发明名称 |
CBN SINTERED BODY FOR HIGH-QUALITY SURFACE PROPERTY MACHINING, CBN SINTERED BODY CUTTING TOOL, AND METHOD OF CUTTING WORK THEREWITH |
摘要 |
To provide a high cBN content ratio sintered body that improves fatigue life of the machined part and has a longer tool lifespan than conventional cBN sintered body tools by suppressing the production of the affected layer by machining formed on the machined surface of the workpiece to be cut and by promoting residual compression stress. That is a cBN sintered body according to the present invention is a cBN sintered body for high surface integrity machining having a cBN component of not less than 87% and not more than 99% by volume% and a thermal conductivity of 100 W/m·K or more; and the outermost surface of the cBN sintered body 1 is coated with a heat resistant film 2 having a thickness of 0.5 µm to 12 µm comprising a compound of at least one element selected from 4a, 5a, 6a group elements and Al, and at least one element selected from C, N, and O. |
申请公布号 |
EP1950189(B1) |
申请公布日期 |
2016.08.17 |
申请号 |
EP20060746985 |
申请日期 |
2006.05.30 |
申请人 |
SUMITOMO ELECTRIC HARDMETAL CORP. |
发明人 |
KUKINO, SATORU;KURODA, YOSHIHIRO;FUKAYA, TOMOHIRO;OKAMURA, KATSUMI |
分类号 |
C04B41/87;B23B27/14;B23B27/20;C04B35/583 |
主分类号 |
C04B41/87 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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