Invention Grant
- Patent Title: Surface-coated cutting tool
- Patent Title (中): 表面切割工具
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Application No.: US13256867Application Date: 2010-03-18
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Publication No.: US08828527B2Publication Date: 2014-09-09
- Inventor: Kohei Tomita , Makoto Igarashi , Akira Osada , Eiji Nakamura
- Applicant: Kohei Tomita , Makoto Igarashi , Akira Osada , Eiji Nakamura
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Materials Corporation
- Current Assignee: Mitsubishi Materials Corporation
- Current Assignee Address: JP Tokyo
- Agency: Leason Ellis LLP.
- Priority: JP2009-065814 20090318; JP2009-147767 20090622; JP2009-149350 20090624
- International Application: PCT/JP2010/001973 WO 20100318
- International Announcement: WO2010/106811 WO 20100923
- Main IPC: B23B27/14
- IPC: B23B27/14 ; C23C28/04 ; C23C16/02 ; C23C16/40 ; C23C16/32 ; C23C30/00 ; C23C16/36 ; C23C16/34 ; C23C16/30

Abstract:
A surface-coated cutting tool includes a tool substrate made of tungsten carbide-based cemented carbide or titanium carbonitride-based cermet; and a hard coating layer formed by vapor-depositing in order, a lower layer (a), an intermediate layer (b), and an upper layer (c) on the tool substrate. The lower layer (a) is a Ti layer composed of one or more of a titanium carbide layer, a titanium nitride layer, a titanium carbonitride layer, a titanium carboxide layer, and a titanium oxycarbonitride layer, and having a thickness of 3 to 20 μm. The intermediate layer (b) is an aluminum oxide layer having a thickness of 1 to 5 μm, and having an α-type crystal structure in a chemically vapor-deposited state. The upper layer (c) is an aluminum oxide layer having a thickness of 2 to 15 μm, and containing one or more elements of Ti, Y, Zr, Cr, and B.
Public/Granted literature
- US20120003452A1 SURFACE-COATED CUTTING TOOL Public/Granted day:2012-01-05
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