CN1822252A - Temperature pressure binding permanent magnet material and its preparing method - Google Patents
Temperature pressure binding permanent magnet material and its preparing method Download PDFInfo
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- CN1822252A CN1822252A CN200610025232.8A CN200610025232A CN1822252A CN 1822252 A CN1822252 A CN 1822252A CN 200610025232 A CN200610025232 A CN 200610025232A CN 1822252 A CN1822252 A CN 1822252A
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Abstract
Present invention relates to a thermal-pressing cementation permanent magnetic materials and preparation method, belongs to permanent magnetic materials preparing technology field. Said invented thermal-pressing cementation permanent magnetic materials is composed of compound agglomerant and permanent magnetism magnetic powder, its weight composition being compound agglomerant 2-20 per cent, permanent magnetism magnetic particle 80-98 per cent. Said compound agglomerant is mixed from 20-90 per cent high polymer resinoid bond and a few firming agent and 10-80 per cent soft metal powder. Above-mentioned compound agglomerant and permanent magnetism magnetic particle are mixed according to certain of weight ratio and pressed under 4-10 T/cm <2> forming pressure, heating at 80-220 degree centigrade, surface anti-corrosive treatment by cathode electrophoretic method, after magnetizing to obtain thermal-pressing permanent magnetic materials. Said invented method advantages are magnet products having higher magnetic characteristics, reducing pressing pressure and mould loss.
Description
Technical field
The present invention relates to a kind of temperature pressure binding permanent magnet material and preparation method thereof, belong to permanent magnetic material fabricating technology field.
Background technology
Binding electromagnetic material is to be mixed with a kind of magnetic material that forms by permanent-magnet powder and binding agent.The manufacture method of bonded permanent magnet in the past adopts the method for normal temperature mold pressing more, improve the magnetic property of magnet, and under the constant prerequisite of magnetic raw material, main density by the raising magnet realizes.The way that improves density has the binding agent of minimizing consumption and strengthens two kinds of pressing pressures.But the binding agent consumption is fewer, and the compression strength of magnet is lower, even can't make practical magnet; Pressing pressure is healed big, and is higher to the requirement of mould and press, and then the wearing and tearing of mould are scrapped phenomenon more seriously.
The temperature and pressure technology since U.S. Hoeganaes company in 1994 since announcing first in international powder metallurgy that Toronto is held and the granular materials meeting, be used to very soon in the actual production, be considered to the of paramount importance technological progress in powdered metal parts production technology aspect.The ANCORDNSETM warm-pressing technology is the technology that is subjected to patent protection, has obtained multinomial United States Patent (USP), and relevant United States Patent (USP) is as: USP5225459,5256185,5268140 etc.
This technology can adopt traditional powder metallurgy to press and learn when being applied to the compacting of conventional sintered metal product, but needs powder and former all are heated to 130～150 ℃.Allowing the maximum mobility scale of temperature and pressure temperature is ± 2 ℃.The powder of heating is packed in the cavity impression by the powder feeding boots, and technology is suppressed continuously routinely, and the part green compact carry out sintering with conventional method subsequently.
The temperature and pressure technology is applied to the manufacturing of binding electromagnetic material, except can improving magnet density and magnetic property, can also reduces binding agent consumption and pressing pressure.
The binding electromagnetic material mixed-powder as the Agglutinate neodymium-iron-boron pressed powder, wherein is mixed with binding agent, curing agent, and it can not heat before compacting, otherwise can influence the flowability of powder and cause magnet to solidify in advance; Secondly temperature pressure binding permanent magnet material need not curing process, can make original compacting and curing two procedures merge into the temperature and pressure one procedure after the employing temperature and pressure technology.
Summary of the invention
The purpose of this invention is to provide a kind of novel temperature and pressure permanent magnetic material and preparation method thereof.
A kind of temperature pressure binding permanent magnet material of the present invention is characterized in that this material is made up of compound binding agent and permanent magnetic powder, and its constituent and weight percentage thereof are as follows:
Compound binding agent 2～20%,
Permanent magnetic powder 80～98%;
Described compound binding agent is made up of the macromolecule resin binding agent and the quick curing agent of soft metal powder that accounts for its total amount 10～80% weight ratios and 20～90% weight ratios; Described soft metal powder is selected from any in copper powder, metal zinc or the metallic tin powder;
Described macromolecule resin binding agent is selected from a kind of in epoxy resin, phenolic resins, nylon, the polypropylene or two kinds;
Described permanent magnetic powder is selected from NdFeB, Fe
3In B, ferrite, aluminium nickel cobalt, SmCo, the neodymium iron nitrogen one or two or more kinds;
Described quick curing agent is the agent of amido class intermediate temperature setting, and its consumption adds 5～10wt% in addition for being benchmark with the macromolecule resin weight of binder.
The preparation method of above-mentioned a kind of temperature pressure binding permanent magnet material is characterized in that having following technical process and step:
A. prepare compound binding agent: the soft metal powder that will account for the compound binding agent total amount and be 10～80% weight ratios with account for macromolecule resin binding agent and the extra amido class quick curing agent that accounts for high polymer binder weight 5～10% weight ratios that adds that total amount is 20～90 weight ratios, mixed together is made compound binding agent at normal temperatures and pressures;
B. prepare temperature pressure binding permanent magnet material: the above-mentioned compound binding agent and the permanent magnetic powder mixed together that accounts for total amount 80～98% weight ratios that will account for total amount 2～20% weight ratios; According to the different requirements of product, adopt the permanent magnetic powder of one or two or more kinds, the cooperation ratio when adopting multiple permanent magnetic powder between various magnetics is not limit, and can cooperate arbitrarily according to the requirement of the difference of product applications and production cost; Then at 4～10 tons/centimetre
2Suppress under the briquetting pressure, mixed powder heating (to mold heated) in the time of pressurization, the heating-up temperature scope is 80～220 ℃; With after the antirust processing in ability cathode electrophoresis method surface makes temperature pressure binding permanent magnet material again after magnetizing.
The characteristics and the advantage of the inventive method are:
(1) can make original compacting and curing two procedures merge into the temperature and pressure one procedure after the employing temperature and pressure technology.
When (2) pressing pressure and magnetic are constant, can improve the density and the magnetic property of binding electromagnetic material.
(3) under the constant condition of magnetic kind, compare with the past old technology, the magnetic property of magnet can improve more than 20%.And, under the situation that magnetic is constant, the magnet magnetic property is constant, can reduce pressing pressure, reduce the mould loss, reduce the Mold Making requirement.Thereby have than remarkable economic efficiency.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1
The preparation process and the step of the temperature pressure binding permanent magnet material of present embodiment are as follows:
(1) preparation of compound binding agent: epoxy adhesive and copper powder 25%: 75% are by weight percentage mixed mutually, and add 5% amido class quick curing agent by the epoxy adhesive amount in addition, mixed together is made compound binding agent.
(2) preparation temperature pressure binding permanent magnet material: with above-mentioned compound binding agent and Fe
3B, ferrite, NdFeB magnetic were by 13: 47: 20: 20 (be binding agent: weight ratio mixed together magnetic=13%: 87%), at briquetting pressure 5T/cm
2Condition under suppress simultaneously, solidify, the temperature and pressure temperature is 120 ℃, pressurize 2 minutes, cooling and demolding is then then carried out the ability cathode electrophoresis antirust processing in surface again, makes temperature pressure binding permanent magnet material again after magnetizing.The main performance of the temperature pressure binding magnet that makes is as follows:
Br (thorn magnetic): 0.54T,
Hcb (magnetic strength coercive force): 320KA/m,
Hcj (in grasp coercive force): 600KA/m,
(BH) m (maximum magnetic energy product): 48KJ/m,
Compression strength: 190MPa,
Density: 5.6g/cm
3
Embodiment 2
The preparation process and the step of present embodiment are as follows:
(1) preparation of compound binding agent: phenolic resin adhesive and soft metal glass putty 50%: 50% by weight percentage (1: 1) are mixed, and add in addition 5% amido class quick curing agent by the phenolic resin adhesive amount, mixed together is made compound binding agent.
(2) preparation temperature pressure binding permanent magnet material: with above-mentioned compound binding agent and Fe
3B, ferromagnetic oxide powder by 15: 75: 10 (be binding agent: weight ratio mixed together magnetic=15%: 85%), at briquetting pressure 6T/cm
2Condition under suppress simultaneously, solidify, the temperature and pressure temperature is 80 ℃, pressurize 3 minutes, cooling and demolding is then then carried out the ability cathode electrophoresis antirust processing in surface again, makes temperature pressure binding permanent magnet material again after magnetizing.
The main performance of the temperature pressure binding magnet that makes is as follows:
Br (thorn magnetic): 0.64T,
Hcb (magnetic strength coercive force): 166KA/m,
Hcj (in grasp coercive force): 233KA/m,
(BH) m (maximum magnetic energy product): 38KJ/m
3,
Compression strength: 292MPa,
Density: 5.8g/cm
3
Embodiment 3
The preparation process and the step of present embodiment are as follows:
(1) preparation of compound binding agent: epoxy resin is mixed mutually with phenolic resin adhesive, soft metal zinc powder 10%: 10%: 80% by weight percentage (1: 1: 8), and add in addition 5% amido class curing agent by resin-bonded dosage, mixed together is made compound binding agent.
(2) preparation temperature pressure binding permanent magnet material: with above-mentioned compound binding agent and aluminium nickel cobalt, NdFeB magnetic by 3.5: 60: 36.5 (be binding agent: weight ratio mixed together magnetic=3.5%: 96.5%), at briquetting pressure 4T/cm
2Condition under suppress simultaneously, solidify, the temperature and pressure temperature is 180 ℃, pressurize 1.5 minutes, cooling and demolding is then then carried out the ability cathode electrophoresis antirust processing in surface again, makes temperature pressure binding permanent magnet material again after magnetizing.
The main performance of the temperature pressure binding magnet that makes is as follows:
Br (thorn magnetic): 0.51T,
Hcb (magnetic strength coercive force): 144KA/m,
Hcj (in grasp coercive force): 215KA/m,
(BH) m (maximum magnetic energy product): 22.5KJ/m
3,
Compression strength: 108MPa,
Density: 5.5g/cm
3
Embodiment 4
The preparation process and the step of present embodiment are as follows:
(1) preparation of compound binding agent: epoxy adhesive and soft metal copper powder 90%: 10% by weight percentage (9: 1) are mixed mutually, and add in addition 10% amido class curing agent by the epoxy adhesive amount, mixed together is made compound binding agent.
(2) preparation temperature pressure binding permanent magnet material: with above-mentioned compound binding agent and Fe
3B, ferrite, Sm
2Co
17Magnetic by 10: 5: 80 (be binding agent: weight ratio mixed together magnetic=10%: 90%), at briquetting pressure 4T/cm
2Suppress simultaneously, solidify under the condition of (and apply greater than 1 tesla gap magnetic field), the temperature and pressure temperature is 200 ℃, pressurize 3 minutes, and cooling and demolding is then carried out the ability cathode electrophoresis antirust processing in surface more then, makes temperature pressure binding permanent magnet material again after magnetizing.
The main performance of the temperature pressure binding magnet that makes is as follows:
Br (thorn magnetic): 0.55T,
Hcb (magnetic strength coercive force): 315KA/m,
Hcj (in grasp coercive force): 797KA/m,
(BH) m (maximum magnetic energy product): 48KJ/m
3,
Compression strength: 286MPa,
Density: 5.3g/cm
3
Embodiment 5
The preparation process and the step of present embodiment are as follows:
(1) preparation of compound binding agent: phenolic resins and soft metal zinc powder 75%: 25% by weight percentage (3: 1) are mixed mutually, and add in addition 10% amido class curing agent by the phenolic resin adhesive amount, mixed together is made compound binding agent.
(2) preparation temperature pressure binding permanent magnet material: with above-mentioned compound binding agent and NdFeB, ferromagnetic oxide powder by 2: 90: 8 (be binding agent: weight ratio mixed together magnetic=2%: 98%), at briquetting pressure 10T/cm
2Condition under suppress simultaneously, solidify, the temperature and pressure temperature is 220 ℃, pressurize 2.5 minutes, cooling and demolding is then then carried out the ability cathode electrophoresis antirust processing in surface again, makes temperature pressure binding permanent magnet material again after magnetizing.
The main performance of the temperature pressure binding magnet that makes is as follows:
Br (remanent magnetism): 0.67T,
Hcb (magnetic strength coercive force): 420KA/m,
Hcj (in grasp coercive force): 724KA/m,
(BH) m (maximum magnetic energy product): 70.4KJ/m
3,
Compression strength: 139MPa,
Density: 6.42g/cm
3
Embodiment 6
The preparation process and the step of present embodiment are as follows:
(1) preparation of compound binding agent: acrylic resin binding agent and soft metal glass putty 85.7%: 14.3% by weight percentage (6: 1) are mixed mutually, and add in addition 10% amido class curing agent by the acrylic resin binder amount, mixed together is made compound binding agent.
(2) preparation temperature pressure binding permanent magnet material: with above-mentioned compound binding agent and NdFeB magnetic by 20: 80 (be binding agent: weight ratio mixed together magnetic=20%: 80%), at briquetting pressure 7T/cm
2Condition under suppress simultaneously, solidify, the temperature and pressure temperature is 210 ℃, pressurize 3 minutes, cooling and demolding is then then carried out the ability cathode electrophoresis antirust processing in surface again, makes temperature pressure binding permanent magnet material again after magnetizing.
The main performance of the temperature pressure binding magnet that makes is as follows:
Br (remanent magnetism): 0.47T,
Hcb (magnetic strength coercive force): 310KA/m,
Hcj (in grasp coercive force): 624KA/m,
(BH) m (maximum magnetic energy product): 43KJ/m
3,
Compression strength: 58MPa,
Density: 5.2g/cm
3
Claims (2)
1. temperature pressure binding permanent magnet material is characterized in that this material is made up of compound binding agent and permanent magnetic powder, and its constituent and weight percentage thereof are as follows:
Compound binding agent 2～20%,
Permanent magnetic powder 80～98%;
Described compound binding agent is made up of the macromolecule resin binding agent and the quick curing agent of soft metal powder that accounts for its total amount 10～80% weight ratios and 20～90% weight ratios; Described soft metal powder is selected from any in copper powder, metal zinc or the metallic tin powder;
Described macromolecule resin binding agent is selected from a kind of in epoxy resin, phenolic resins, nylon, the polypropylene or two kinds;
Described permanent magnetic powder is selected from NdFeB, Fe
3In B, ferrite, aluminium nickel cobalt, SmCo, the neodymium iron nitrogen one or two or more kinds;
Described quick curing agent is the agent of amido class intermediate temperature setting, and its consumption adds 5～10Wt% in addition for being benchmark with the macromolecule resin weight of binder.
2. the preparation method of the described a kind of temperature pressure binding permanent magnet material of claim 1 is characterized in that having following technical process and step:
A. prepare compound binding agent: the soft metal powder that will account for the compound binding agent total amount and be 10～80% weight ratios with account for macromolecule resin binding agent and the extra amido class quick curing agent that accounts for high polymer binder weight 5～10% weight ratios that adds that total amount is 20～90 weight ratios, mixed together is made compound binding agent at normal temperatures and pressures;
B. prepare temperature pressure binding permanent magnet material: the above-mentioned compound binding agent and the permanent magnetic powder mixed together that accounts for total amount 80～98% weight ratios that will account for total amount 2～20% weight ratios; According to the different requirements of properties of product, adopt the permanent magnetic powder of one or two or more kinds; When adopting multiple permanent magnetic powder, the cooperation ratio between various magnetics is not limit, and can cooperate arbitrarily according to the requirement of the difference of product applications and production cost; Then at 4～10 tons/centimetre
2Suppress under the briquetting pressure, mixed powder heating (heating mould) in the time of pressurization, the heating-up temperature scope is 80～220 ℃; With after the antirust processing in ability cathode electrophoresis method surface makes temperature pressure binding permanent magnet material again after magnetizing.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314990A (en) * | 2010-07-08 | 2012-01-11 | 赵立文 | Magnet and preparation method thereof |
| CN102324814A (en) * | 2011-08-26 | 2012-01-18 | 邓上云 | Preparation process of neodymium-iron-boron /ferrite composite magnet body for permanent magnet alternating current synchronous motor |
| CN102476499A (en) * | 2010-11-25 | 2012-05-30 | 明安国际企业股份有限公司 | Method for manufacturing composite workpiece with embedded magnetic components |
| CN102476498A (en) * | 2010-11-25 | 2012-05-30 | 明安国际企业股份有限公司 | Manufacturing method of composite material workpiece having built-in magnetic assembly |
| CN103137315A (en) * | 2013-03-25 | 2013-06-05 | 安徽大地熊新材料股份有限公司 | Method for preparing low-weightlessness rare earth-iron-boron permanent magnet |
| CN103489621A (en) * | 2013-10-18 | 2014-01-01 | 北京科技大学 | Method for preparing anisotropic bonded magnet by adopting two-step molding process |
| CN104332301A (en) * | 2014-11-25 | 2015-02-04 | 湖南航天磁电有限责任公司 | Method for preparing bonded NdFeB permanent magnet |
| CN104910823A (en) * | 2014-03-11 | 2015-09-16 | 味之素株式会社 | Adhesive film |
| CN106653345A (en) * | 2016-11-16 | 2017-05-10 | 宁波韵升粘结磁体有限公司 | Method capable of improving performance of bonded Neodymium-Iron-Boron magnet |
-
2006
- 2006-03-30 CN CNB2006100252328A patent/CN100568410C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314990A (en) * | 2010-07-08 | 2012-01-11 | 赵立文 | Magnet and preparation method thereof |
| CN102476499A (en) * | 2010-11-25 | 2012-05-30 | 明安国际企业股份有限公司 | Method for manufacturing composite workpiece with embedded magnetic components |
| CN102476498A (en) * | 2010-11-25 | 2012-05-30 | 明安国际企业股份有限公司 | Manufacturing method of composite material workpiece having built-in magnetic assembly |
| CN102324814A (en) * | 2011-08-26 | 2012-01-18 | 邓上云 | Preparation process of neodymium-iron-boron /ferrite composite magnet body for permanent magnet alternating current synchronous motor |
| CN102324814B (en) * | 2011-08-26 | 2013-08-28 | 邓上云 | Preparation process of neodymium-iron-boron /ferrite composite magnet body for permanent magnet alternating current synchronous motor |
| CN103137315A (en) * | 2013-03-25 | 2013-06-05 | 安徽大地熊新材料股份有限公司 | Method for preparing low-weightlessness rare earth-iron-boron permanent magnet |
| CN103137315B (en) * | 2013-03-25 | 2016-03-30 | 安徽大地熊新材料股份有限公司 | A kind of method preparing low weightless rare earth-iron-boron permanent magnet |
| CN103489621A (en) * | 2013-10-18 | 2014-01-01 | 北京科技大学 | Method for preparing anisotropic bonded magnet by adopting two-step molding process |
| CN104910823A (en) * | 2014-03-11 | 2015-09-16 | 味之素株式会社 | Adhesive film |
| CN104332301A (en) * | 2014-11-25 | 2015-02-04 | 湖南航天磁电有限责任公司 | Method for preparing bonded NdFeB permanent magnet |
| CN106653345A (en) * | 2016-11-16 | 2017-05-10 | 宁波韵升粘结磁体有限公司 | Method capable of improving performance of bonded Neodymium-Iron-Boron magnet |
| CN106653345B (en) * | 2016-11-16 | 2018-01-05 | 宁波韵升粘结磁体有限公司 | A kind of method for improving Agglutinate neodymium-iron-boron magnet performance |
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