Invention Grant
- Patent Title: Surface-coated cutting tool made of hard metal and manufacturing method for same
- Patent Title (中): 硬质金属表面切割刀具及其制造方法
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Application No.: US10597505Application Date: 2005-01-28
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Publication No.: US07655299B2Publication Date: 2010-02-02
- Inventor: Keisuke Morita , Tomoyuki Masuno , Akira Osada , Eiji Nakamura
- Applicant: Keisuke Morita , Tomoyuki Masuno , Akira Osada , Eiji Nakamura
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Materials Corporation
- Current Assignee: Mitsubishi Materials Corporation
- Current Assignee Address: JP Tokyo
- Agency: Darby & Darby P.C.
- Priority: JP2004-022535 20040130; JP2004-146397 20040517; JP2004-146398 20040517; JP2004-212896 20040721
- International Application: PCT/JP2005/001208 WO 20050128
- International Announcement: WO2005/072895 WO 20050811
- Main IPC: B23B27/14
- IPC: B23B27/14 ; C23C16/00

Abstract:
A surface-coated cutting tool comprising: a hard substrate; a lower layer which is formed on a surface of the hard substrate, contains a composite compound consisting of at least one element selected from Ti and Al, and at least one element selected from N and C, and has an average thickness of 0.1 to 3 μm; and an upper layer having an average thickness of 1 to 13 μm, which is formed on the lower layer and having a texture in which fine grains of crystalline Ti (C,N) based compounds or fine grains of crystalline (Ti, Al)(C, N) based compounds are dispersively distributed in a matrix of a carbon based amorphous material containing W.
Public/Granted literature
- US20080233388A1 Surface-Coated Cutting Tool Made of Hard Metal and Manufacturing Method for Same Public/Granted day:2008-09-25
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