Invention Grant
- Patent Title: Hard alloy and cutting tool
- Patent Title (中): 硬质合金和切削工具
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Application No.: US14129492Application Date: 2012-06-27
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Publication No.: US09228252B2Publication Date: 2016-01-05
- Inventor: Hideyoshi Kinoshita , Katsuhiro Hanaki , Kouji Hirosaki
- Applicant: Hideyoshi Kinoshita , Katsuhiro Hanaki , Kouji Hirosaki
- Applicant Address: JP Kyoto-Shi, Kyoto
- Assignee: KYOCERA CORPORATION
- Current Assignee: KYOCERA CORPORATION
- Current Assignee Address: JP Kyoto-Shi, Kyoto
- Priority: JP2011-141916 20110627; JP2011-204787 20110920; JP2011-237452 20111028
- International Application: PCT/JP2012/066409 WO 20120627
- International Announcement: WO2013/002270 WO 20130103
- Main IPC: C22C29/08
- IPC: C22C29/08 ; C22C29/04 ; B22F3/10 ; C04B35/56 ; B22F5/00

Abstract:
A hard alloy and a cutting tool. The hard alloy includes a hard phase and a binder phase. The hard phase includes: a main phase containing 50-70 mass % of WC, 15-30 mass % of TiCN, and 0-10 mass % of at least one kind of carbide, nitride or carbonitride of one or more non-W, non-Ti periodic table Group 4, 5 or 6 metal; a WC phase; and a composite hard phase. The binder phase includes 6 to 12 mass % of at least one of Co and Ni. The hard alloy includes a surface portion at a surface thereof, the surface portion having a WC content higher than that of an internal portion thereof. An average size of grains in the WC phase in the surface portion is larger than an average size of grains in the WC phase in the internal portion.
Public/Granted literature
- US20140127527A1 HARD ALLOY AND CUTTING TOOL Public/Granted day:2014-05-08
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