CN1306528C - Uneasily-sintered magnetic powder - Google Patents
Uneasily-sintered magnetic powder Download PDFInfo
- Publication number
- CN1306528C CN1306528C CNB2004100023885A CN200410002388A CN1306528C CN 1306528 C CN1306528 C CN 1306528C CN B2004100023885 A CNB2004100023885 A CN B2004100023885A CN 200410002388 A CN200410002388 A CN 200410002388A CN 1306528 C CN1306528 C CN 1306528C
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- magnetic
- magnetic powder
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- sintering
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Abstract
The present invention belongs to the field of magnetic technique materials and provides a magnetic powder which is not easy to sinter and has abrasive resistance. The present invention is characterized in that the content range of cobalt (Co) is reasonably controlled at 32% to 36%, and microelements such as Cr and Nb are reasonably added, wherein the content of the Cr(r%) is equal to 0 to 5%, and the content of the Nb(z%) is equal to 0 to 5%. Therefore, the performance of the magnetic powder is changed to make the sintering performance and the abrasion resistance obviously improved. Thereby, the magnetic powder can be widely applied to food packaging industry, printing industry and other fields.
Description
Technical field
The present invention relates to a kind of magnetic of not easy-sintering, belong to technical field of magnetic materials.
Background technology
Magnetic is usually used in fields such as packaging for foodstuff industry, printing industry, textile industry, and magnetic of the prior art is scarcely high temperature resistant, sinters piece easily under the state of high temperature, thereby loses the characteristic of magnetic.
The magnetic of domestic present production, owing to form difference fully, its performance and this magnetic difference are very big.Disclose a kind of coercive force when being shaped to bonded permanent magnet in the Chinese patent 200410034695 and reduced slight ferromagnetic oxide powder.Be with alkaline-earth metal as constituent, the bonded permanent magnet ferromagnetic oxide powder for predetermined moulding test the time below the coercitive 600Oe of being reduced in.This magnetic be by with average grain diameter more than the 0.50 μ m to the fine powder of 1.0 μ m and more than the average grain diameter 2.50 μ m to the meal of 5.0 μ m, in the ratio of this fine powder account for that 15～40 weight % mix and.But the resistance to wear of this magnetic and agglutinating property are relatively poor.
Disclose a kind of magnetic among the Japan Patent 02-250901, but its chemical composition is also different with this patent, is embodied on latter two element, on the content range of (chromium, niobium) and Co.Certainly its performance is also just obviously different, is embodied in this patent poor-performing on its resistance to wear and the agglutinating property especially.
Summary of the invention
An object of the present invention is provides a kind of magnetic of anti-sintering for addressing the above problem, and this magnetic is the magnetic of ferrous alloy, and sintering resistance is good.
For achieving the above object, a technical scheme of the present invention provides a kind of magnetic of anti-sintering, and it is formed by weight percentage composition and counts: Co:32-36%; Cr:0-5% is except 0; Nb:0-2% is except 0; All the other are Fe.In addition, still contain a small amount of impurity.The magnetic of a kind of anti-sintering of the present invention is characterized by spherical particle, or flake shaped particle, and particle size distribution is at 1-100 μ m, and magnetic of the present invention has the saturation magnetization height, resistance to wear is good, not characteristics such as easy-sintering.Technological process of the present invention is as follows: by prior art melting → remove slag → fragmentation → powder process.
Embodiment
Enumerate embodiment below, the present invention is further specified, but the present invention is not only limited to these embodiment.
Embodiment 1
A. use percentage by weight Cr 2%, Nb 0.001%, and Co 32%, and Fe 66% powder is mixed earlier.
B. in stove, smelted, treat that melting fully after, cool to room temperature.
C. remove slag, fragmentation.
D. abrasive dust is to 1-100 μ m, and this magnetic is through the continuous use of long-time (as half a year), and its shape still remains unchanged.
Embodiment 2
A. use weight ratio Cr 0.5%, Nb 0.1%, and Co 36%, and Fe 63.4% powder mixes.
B. in addition melting in stove, treat melting fully after.
C. powder by atomization, controlled condition are according to the different of atomization method and equipment and difference makes particle size distribution at 1-100 μ m.
Claims (2)
1. the magnetic of easy-sintering not is characterized in that being made of the material of following mass percent: Co:32-36%; Cr:0-5% is except 0; Nb:0-2% is except 0; All the other are Fe.
2. the magnetic of a kind of not easy-sintering according to claim 1 is characterized in that, its particle size distribution is at 1-100 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100023885A CN1306528C (en) | 2004-01-14 | 2004-01-14 | Uneasily-sintered magnetic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100023885A CN1306528C (en) | 2004-01-14 | 2004-01-14 | Uneasily-sintered magnetic powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1641802A CN1641802A (en) | 2005-07-20 |
| CN1306528C true CN1306528C (en) | 2007-03-21 |
Family
ID=34867374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100023885A Expired - Fee Related CN1306528C (en) | 2004-01-14 | 2004-01-14 | Uneasily-sintered magnetic powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1306528C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005276B (en) * | 2009-09-03 | 2014-02-05 | 施立新 | High wear-resistant magnetic powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63233507A (en) * | 1987-03-20 | 1988-09-29 | Kobe Steel Ltd | Magnetic powder for electromagnetic clutch |
| CN1254171A (en) * | 1999-11-12 | 2000-05-24 | 上海交通大学 | High saturation magnetic flux density and low remanence magnetism double-ferrromagnetism phase soft-magnetic alloy |
| JP2002275600A (en) * | 2001-03-21 | 2002-09-25 | Hitachi Powdered Metals Co Ltd | Raw material powder for sintered soft magnetic stainless steel and production method for the sintered soft magnetic stainless steel using the powder |
| JP2003147404A (en) * | 2001-11-09 | 2003-05-21 | Kawasaki Steel Corp | Iron-cobalt alloy powder |
-
2004
- 2004-01-14 CN CNB2004100023885A patent/CN1306528C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63233507A (en) * | 1987-03-20 | 1988-09-29 | Kobe Steel Ltd | Magnetic powder for electromagnetic clutch |
| CN1254171A (en) * | 1999-11-12 | 2000-05-24 | 上海交通大学 | High saturation magnetic flux density and low remanence magnetism double-ferrromagnetism phase soft-magnetic alloy |
| JP2002275600A (en) * | 2001-03-21 | 2002-09-25 | Hitachi Powdered Metals Co Ltd | Raw material powder for sintered soft magnetic stainless steel and production method for the sintered soft magnetic stainless steel using the powder |
| JP2003147404A (en) * | 2001-11-09 | 2003-05-21 | Kawasaki Steel Corp | Iron-cobalt alloy powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1641802A (en) | 2005-07-20 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20220114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |