- 专利标题: SURFACE-COATED CUTTING TOOL
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申请号: EP12828780.2申请日: 2012-08-31
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公开(公告)号: EP2752264B1公开(公告)日: 2018-07-18
- 发明人: TOMITA Kohei , OSADA Akira
- 申请人: Mitsubishi Materials Corporation
- 申请人地址: 3-2, Otemachi 1-chome Chiyoda-ku Tokyo 100-8117 JP
- 专利权人: Mitsubishi Materials Corporation
- 当前专利权人: Mitsubishi Materials Corporation
- 当前专利权人地址: 3-2, Otemachi 1-chome Chiyoda-ku Tokyo 100-8117 JP
- 代理机构: Gille Hrabal
- 优先权: JP2011189003 20110831; JP2012187859 20120828
- 国际公布: WO2013031952 20130307
- 主分类号: B23B27/14
- IPC分类号: B23B27/14 ; B23C5/16 ; C23C16/02 ; C23C16/40 ; C23C16/34 ; C23C16/455 ; C23C28/04
摘要:
A surface-coated cutting tool with a hard coating layer exhibiting an excellent flaking and chipping resistance in a high-speed heavy and intermittent cutting is provided. The vapor-deposited hard coating layer has a lower layer (Ti compound layer) and an upper layer (±-type Al 2 O 3 layer). Thirty to 70 % of Al 2 O 3 crystal grains directly above the lower layer are oriented to (11-20) plane. Forty-five % or more of all of the Al 2 O 3 crystal grains are oriented to (0001) plane. Preferably, the outermost surface layer of the lower layer is an oxygen-containing TiCN layer having oxygen content of 0.5 to 3 atomic % only within the depth region of 500 nm. The ratio of the number of Al 2 O 3 crystal grains directly above the outermost surface layer to the number of crystal grains of the Ti carbonitride layer in the outermost surface layer is 0.01 to 0.5 in the interface.
公开/授权文献
- EP2752264A1 SURFACE-COATED CUTTING TOOL 公开/授权日:2014-07-09
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