Invention Grant
- Patent Title: Coated cutting tool
- Patent Title (中): 涂层切割工具
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Application No.: US11721520Application Date: 2005-12-09
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Publication No.: US07972714B2Publication Date: 2011-07-05
- Inventor: Yoshio Okada , Naoya Omori , Minoru Itoh , Norihiro Takanashi , Shinya Imamura , Susumu Okuno
- Applicant: Yoshio Okada , Naoya Omori , Minoru Itoh , Norihiro Takanashi , Shinya Imamura , Susumu Okuno
- Applicant Address: JP Hyogo
- Assignee: Sumitomo Electric Hardmetal Corp.
- Current Assignee: Sumitomo Electric Hardmetal Corp.
- Current Assignee Address: JP Hyogo
- Agency: Ditthavong Mori & Steiner, P.C.
- Priority: JP2004-361652 20041214
- International Application: PCT/JP2005/022636 WO 20051209
- International Announcement: WO2006/064724 WO 20060622
- Main IPC: B23B27/14
- IPC: B23B27/14
Abstract:
The present invention relates to a coated cutting tool (1) including a substrate (8) and a coating (9) formed on the substrate (8), wherein the coating (9) includes a first coating (10) composed of TiCN and a second coating (11) composed of α-Al2O3, the first coating (10) is positioned between the substrate (8) and the second coating (11) and has tensile stress S1, the second coating (11) has compressive stress S2, and the tensile stress S1 and the compressive stress S2 are defined by the following equation (I): 400 MPa≦|S2−S1|≦3500 MPa (I).
Public/Granted literature
- US20090297835A1 COATED CUTTING TOOL Public/Granted day:2009-12-03
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