CN1595556A - A rare-earth bonded permanent magnet and method for manufacturing same - Google Patents
A rare-earth bonded permanent magnet and method for manufacturing same Download PDFInfo
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- CN1595556A CN1595556A CN 200410027810 CN200410027810A CN1595556A CN 1595556 A CN1595556 A CN 1595556A CN 200410027810 CN200410027810 CN 200410027810 CN 200410027810 A CN200410027810 A CN 200410027810A CN 1595556 A CN1595556 A CN 1595556A
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Abstract
A rare earth bonded permanent magnet, is made by the steps that anisotropic rubidium-iron-nitrogen magnetic powder and polymeric adhesives and processing aid are mixed, then the product is shaped in magnetic field. Its composites and mass contained are: anisotropic rubidium-iron-nitrogen magnetic powder of 80~98%, polymeric adhesives of 1.5~15%, processing aid of 0.1~5%, it has the advantages of low cost, excellent magnetic behavior and high magnetic behavior, can be widely used in micro machine, automobile industry and electronic instrument fields.
Description
Affiliated technical field
The present invention relates to a kind of rare-earth bound permanent magnetic material, the invention still further relates to a kind of manufacture method of rare-earth bound permanent magnetic material.
Background technology
Extrusion moulding is a described compound of extruding heating and melting from the metal die of extrusion shaping machine, and the length of requirement is cut in cooling simultaneously, makes the method for magnet.The advantage of this method is that the degree of freedom of magnet shape is big, makes elongated magnet easily, the flowability of the fused mass during still in order to ensure moulding, and the addition of high polymer binder must be more than shaping method to suppress.
The magnetic that extrusion moulding on the present domestic and international market prepares the magnet employing has: anisotropic ferrite magnetic, the anisotropy NdFeB magnetic powder of HDDR manufactured, SmFeN, Sm
2Co
17Deng.There is the low deficiency of performance in the magnet that adopts cheap anisotropic ferrite permanent magnetism powder to make; Though the magnet that adopts the anisotropy NdFeB magnetic powder to make has higher magnetic property, owing to relate to the problem of relevant patent, cost is higher, exports limited; SmFeN, Sm
2Co
17, also be restricted on the price and on using owing to contain more strategic element S m, Co Deng magnet.
Summary of the invention
The object of the present invention is to provide a kind of cost low, have excellent magnetic characteristics, the novel rare-earth bonded permanent magnet of good corrosion resistance.
Another object of the present invention is to provide the manufacture method of above-mentioned rare-earth bound permanent magnet.
A kind of rare-earth bound permanent magnet provided by the invention, its component and weight content are:
Anisotropy neodymium-iron-nitrogen magnetic 80～98%
High polymer binder 1.5～15%
Processing aid 0.1～5%.
The basis of neodymium-iron-nitrogen magnetic that rare-earth bound permanent magnet of the present invention adopts comprises rare earth element based on Nd, based on the transition metal of Fe, based on the basic element of N; High polymer binder is selected one or more in haloflex (CPE), polypropylene, nylon 6, nylon 12, nylon 46, nylon 66, NYLON610, nylon 11, nylon 6-12, nylon 612, nylon 6-66, thermoplastic polyimide, polyolefin polymers, Merlon, liquid crystalline resin, polymethyl methacrylate, polyethers, polyether-ether-ketone, Polyetherimide, polyacetals, polyphenylene sulfide (PPS), fluorine resin and the thermoplastic elastomer (TPE) etc. for use; Processing aid is selected one or several in coupling agent, plasticizer, lubricant, age resistor and the antioxidant for use.
The manufacture method of rare-earth bound permanent magnet of the present invention is: at first anisotropy neodymium-iron-nitrogen magnetic is mixed with high polymer binder, processing aid, fully mixing evenly through mixing roll or mixer, be extrusion molding in the magnetic field of 0.5～50,000 Oe in magnetic field intensity then.By choosing the shape of extrusion shaping machine die head, determine the transverse shape of rare-earth bond magnet, can easily make the magnet of thin-walled or different section, and, by adjusting the shearing length of formed body, can make microscler magnet.
The present invention has following beneficial effect:
1. owing to adopt homemade anisotropy neodymium-iron-nitrogen rare-earth magnetic as raw material, raw material resources are abundant also can effectively to reduce cost.
2. because the corrosion resistance of anisotropy neodymium-iron-nitrogen rare-earth magnetic is better than the fast quenching NdFeB magnetic powder, so the corrosion resistance of magnet of the present invention is better, thereby its scope of application is wider.
3. magnet of the present invention has excellent mechanical intensity and good magnetic property, and mechanical strength can reach 6.5～8.6kgf/mm
2, magnetic energy product can reach 6.0～16MGOe.
4. magnet of the present invention can be widely used in electrical micro-machine, automobile making, fields such as electronic instrument.
Embodiment
Embodiment 1
The magnetic prescription is anisotropy neodymium-iron-nitrogen magnetic 90% (percentage by weight), binding agent is selected nylon 12 resins for use, content is 8% (percentage by weight), selection of auxiliary plasticizer, lubricant, age resistor, auxiliary agent content is 2% (percentage by weight), the first mixture of forming with mixing roll or the fully mixing above-mentioned prescription of kneader is extrusion molding in the magnetic field of 12kOe in magnetic field intensity then, and the density of the flaky permanent magnet that makes is 5.5g/cm
3, maximum magnetic energy product is 7.2MGOe.
Embodiment 2
The magnetic prescription is anisotropy neodymium-iron-nitrogen magnetic 91% (percentage by weight), binding agent is selected PPS for use, content is 7.5% (percentage by weight), selection of auxiliary plasticizer, lubricant, age resistor, auxiliary agent content is 1.5% (percentage by weight), the first mixture of forming with mixing roll or the fully mixing above-mentioned prescription of kneader is extrusion molding in the magnetic field of 16kOe in magnetic field intensity then, and the density of the flaky permanent magnet that makes is 6.3g/cm
3, maximum magnetic energy product is 11.8MGOe.
Embodiment 3
The magnetic prescription is anisotropy neodymium-iron-nitrogen magnetic 92% (percentage by weight), binding agent is selected nylon 12 resins for use, content is 7% (percentage by weight), selection of auxiliary plasticizer, lubricant, age resistor, auxiliary agent content is 1% (percentage by weight), the first mixture of forming with mixing roll or the fully mixing above-mentioned prescription of kneader is extrusion molding in the magnetic field of 20kOe in magnetic field intensity then, and the density of the flaky permanent magnet that makes is 6.8g/cm
3, maximum magnetic energy product is 14.1MGOe.
Comparative example 1
The magnetic prescription is anisotropy neodymium-iron-nitrogen magnetic 92% (percentage by weight), binding agent is selected nylon 6 resin for use, content is 7% (percentage by weight), selection of auxiliary plasticizer, lubricant, age resistor, auxiliary agent content is 1% (percentage by weight), the mixture that elder generation forms with mixing roll or the fully mixing above-mentioned prescription of kneader, extrusion molding, do not adopt magnetic field orientating, the density of the flaky permanent magnet that makes is 6.8g/cm
3, maximum magnetic energy product is 3.6MGOe.This magnet magnetic property is not high.
Claims (5)
1, a kind of rare-earth bound permanent magnet, its component and weight content are:
Anisotropy neodymium-iron-nitrogen magnetic 80～98%
High polymer binder 1.5～15%
Processing aid 0.1～5%.
2, rare-earth bound permanent magnet according to claim 1 is characterized in that: the basis of described anisotropy neodymium-iron-nitrogen magnetic comprises rare earth element based on Nd, based on the transition metal of Fe, based on the basic element of N.
3, rare-earth bound permanent magnet according to claim 1 is characterized in that: described high polymer binder is selected one or more in haloflex, polypropylene, nylon 6, nylon 12, nylon 46, nylon 66, NYLON610, nylon 11, nylon 6-12, nylon 612, nylon 6-66, thermoplastic polyimide, polyolefin polymers, Merlon, liquid crystalline resin, polymethyl methacrylate, polyethers, polyether-ether-ketone, Polyetherimide, polyacetals, polyphenylene sulfide, fluorine resin and the thermoplastic elastomer (TPE) for use.
4, rare-earth bound permanent magnet according to claim 1, it is characterized in that: described processing aid is selected one or several in coupling agent, plasticizer, lubricant, age resistor and the antioxidant for use.
5, the manufacture method of the described rare-earth bound permanent magnet of a kind of claim 1, it is characterized in that: at first anisotropy neodymium-iron-nitrogen magnetic is mixed with high polymer binder, processing aid, fully mixing evenly through mixing roll or mixer, be extrusion molding in the magnetic field of 0.5～50,000 Oe in magnetic field intensity then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027810 CN1595556A (en) | 2004-06-28 | 2004-06-28 | A rare-earth bonded permanent magnet and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027810 CN1595556A (en) | 2004-06-28 | 2004-06-28 | A rare-earth bonded permanent magnet and method for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1595556A true CN1595556A (en) | 2005-03-16 |
Family
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Family Applications (1)
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|---|---|---|---|
| CN 200410027810 Pending CN1595556A (en) | 2004-06-28 | 2004-06-28 | A rare-earth bonded permanent magnet and method for manufacturing same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145442B (en) * | 2006-09-06 | 2012-02-15 | 大同特殊钢株式会社 | Process of producing permanent magnet and permanent magnet |
| CN101513673B (en) * | 2008-02-22 | 2012-07-25 | 北京中科三环高技术股份有限公司 | Flow channel device capable of extruding out a plurality of magnets once for extruding machine and preparation method using same |
| CN103258610A (en) * | 2013-05-14 | 2013-08-21 | 厦门建霖工业有限公司 | Magnetic plastic composite material and preparation method thereof |
| CN106816248A (en) * | 2016-12-07 | 2017-06-09 | 麦格昆磁（天津）有限公司 | Mixed glue magnetic and preparation method thereof |
| CN113363047A (en) * | 2021-05-19 | 2021-09-07 | 深圳前海麦格美科技有限公司 | Ultrathin flexible magnetic sheet and use |
| CN114023551A (en) * | 2021-10-12 | 2022-02-08 | 横店集团东磁股份有限公司 | Anisotropic rubber composite rare earth permanent magnet orientation forming process |
-
2004
- 2004-06-28 CN CN 200410027810 patent/CN1595556A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145442B (en) * | 2006-09-06 | 2012-02-15 | 大同特殊钢株式会社 | Process of producing permanent magnet and permanent magnet |
| CN101513673B (en) * | 2008-02-22 | 2012-07-25 | 北京中科三环高技术股份有限公司 | Flow channel device capable of extruding out a plurality of magnets once for extruding machine and preparation method using same |
| CN103258610A (en) * | 2013-05-14 | 2013-08-21 | 厦门建霖工业有限公司 | Magnetic plastic composite material and preparation method thereof |
| CN103258610B (en) * | 2013-05-14 | 2016-02-24 | 厦门建霖工业有限公司 | A kind of magnetic plastic composite material and preparation method thereof |
| CN106816248A (en) * | 2016-12-07 | 2017-06-09 | 麦格昆磁（天津）有限公司 | Mixed glue magnetic and preparation method thereof |
| CN106816248B (en) * | 2016-12-07 | 2020-11-10 | 麦格昆磁（天津）有限公司 | Mixed rubber magnetic powder and preparation method thereof |
| CN113363047A (en) * | 2021-05-19 | 2021-09-07 | 深圳前海麦格美科技有限公司 | Ultrathin flexible magnetic sheet and use |
| CN114023551A (en) * | 2021-10-12 | 2022-02-08 | 横店集团东磁股份有限公司 | Anisotropic rubber composite rare earth permanent magnet orientation forming process |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |