Invention Grant
- Patent Title: Surface-coated cutting tool having excellent chipping resistance and wear resistance
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Application No.: US15529008Application Date: 2015-11-27
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Publication No.: US10556273B2Publication Date: 2020-02-11
- Inventor: Shun Sato , Masakuni Takahashi
- Applicant: MITSUBISHI MATERIALS CORPORATION
- Applicant Address: JP Tokyo
- Assignee: MITSUBISHI MATERIALS CORPORATION
- Current Assignee: MITSUBISHI MATERIALS CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Leason Ellis LLP
- Priority: JP2014-239956 20141127; JP2015-229736 20151125
- International Application: PCT/JP2015/083407 WO 20151127
- International Announcement: WO2016/084939 WO 20160602
- Main IPC: B23B27/14
- IPC: B23B27/14 ; B23B51/00 ; B23B27/20 ; C04B35/5831 ; C23C14/06

Abstract:
In a surface-coated cutting tool, an A layer made of an (Al1-xTix)N layer (0.35≤x≤0.6 by an atom ratio) and a B layer made of a (Al1-y-zTiySiz)N layer (0.35≤y≤0.6 and 0.01≤z≤0.1 by an atom ratio) are layered on a surface of a tool body in which at least a cutting edge is made of a cBN sintered body. A layer thickness ratio of the A layer and the B layer (tB/tA) is 2 to 5, an X-ray diffraction intensity ratio I(200)/I(111) as the entire hard coating layer is more than 3 and 12 or less, a full width at half maximum of a peak of I(200) is 0.3 to 1.0, the IA(200)/IA(111) of the A layer is 2 to 10, and a full width at half maximum of the peak of the IA(200) is 0.3 to 1.0.
Public/Granted literature
- US20170266733A1 SURFACE-COATED CUTTING TOOL HAVING EXCELLENT CHIPPING RESISTANCE AND WEAR RESISTANCE Public/Granted day:2017-09-21
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