JPS6479340A - Hard alloy - Google Patents
Hard alloyInfo
- Publication number
- JPS6479340A JPS6479340A JP23774087A JP23774087A JPS6479340A JP S6479340 A JPS6479340 A JP S6479340A JP 23774087 A JP23774087 A JP 23774087A JP 23774087 A JP23774087 A JP 23774087A JP S6479340 A JPS6479340 A JP S6479340A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- hard
- cutting tools
- sintered
- sintering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To develop a sintered hard alloy for cutting tools having excellent chipping resistance and long life by subjecting a mixture composed of WC powder and B1 type hard powder to pressurized molding by using a binder such as Co, then sintering the molding and forming a specific hard film on the surface thereof. CONSTITUTION:The powder mixture composed of the hard WC powder and the B1 hard powder of carbides, nitrides, carbonitrides, etc., of group 4a, 5a, 6a metals of the periodic table as well as metal powder such as Co for binding at the time of sintering is prepd. The average grain size of the powder mixture in this case is 1.0-3.0mum and the B1 type hard powder occupies 5-15wt.% in the total hard powder; in addition, 30-70% of the hard WC powder is smaller than the average grain size of the B1 type hard powder. The sintered hard cutting tools having excellent toughness are produced by press-molding the powder mixture composed of 90-95% total hard particles and 5-10% binder such as Co to the shape of the cutting tools and sintering the moldings at 1,400-1,500 deg.C in a vacuum. The edge parts of such tools are coated with the hard film consisting of Al2O3, other metal carbides, nitrides, carbonitrides or diamond, etc., at 5-20mum thickness. The toughness of the sintered hard alloy is large and the service life of the cutting tools are extended by the sintered hard film on the surface thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62237740A JP2596429B2 (en) | 1987-09-22 | 1987-09-22 | Cemented carbide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62237740A JP2596429B2 (en) | 1987-09-22 | 1987-09-22 | Cemented carbide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6479340A true JPS6479340A (en) | 1989-03-24 |
JP2596429B2 JP2596429B2 (en) | 1997-04-02 |
Family
ID=17019771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62237740A Expired - Lifetime JP2596429B2 (en) | 1987-09-22 | 1987-09-22 | Cemented carbide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2596429B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5421851A (en) * | 1991-05-07 | 1995-06-06 | Sandvik Ab | Sintered carbonitride alloy with controlled grain size |
WO2012153858A1 (en) * | 2011-05-12 | 2012-11-15 | 株式会社タンガロイ | Superhard alloy and coated superhard alloy |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6159391A (en) * | 1984-08-30 | 1986-03-26 | 日本電気ホームエレクトロニクス株式会社 | Stil picture moving circuit |
-
1987
- 1987-09-22 JP JP62237740A patent/JP2596429B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6159391A (en) * | 1984-08-30 | 1986-03-26 | 日本電気ホームエレクトロニクス株式会社 | Stil picture moving circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5421851A (en) * | 1991-05-07 | 1995-06-06 | Sandvik Ab | Sintered carbonitride alloy with controlled grain size |
WO2012153858A1 (en) * | 2011-05-12 | 2012-11-15 | 株式会社タンガロイ | Superhard alloy and coated superhard alloy |
JP2012251242A (en) * | 2011-05-12 | 2012-12-20 | Tungaloy Corp | Superhard alloy and coated superhard alloy |
Also Published As
Publication number | Publication date |
---|---|
JP2596429B2 (en) | 1997-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment |
Free format text: PAYMENT UNTIL: 20080109 Year of fee payment: 11 |