CN102843002B - A kind of manufacture method of permanent magnet machine rotor - Google Patents
A kind of manufacture method of permanent magnet machine rotor Download PDFInfo
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- CN102843002B CN102843002B CN201210358243.3A CN201210358243A CN102843002B CN 102843002 B CN102843002 B CN 102843002B CN 201210358243 A CN201210358243 A CN 201210358243A CN 102843002 B CN102843002 B CN 102843002B
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Abstract
The invention discloses a kind of manufacture method of permanent magnet machine rotor, belong to machine field, comprise ball milling, premagnetization, oven dry, pulverizing, expanded dispersion, orientation compacting, sintering, grind and be processed into finished product.Beneficial effect is that the load that is large, that can drive of flux torque power that is large, that produce is large.
Description
Technical field
The present invention relates to a kind of manufacture method of permanent magnet machine rotor, belong to technical field of motors.
Background technology
Magneto is energy-conservation owing to itself having, and power factor is high, low noise, the advantages such as volume is little are widely used, magneto has stator permanent magnet and rotor permanent magnet two kinds, the rotor produced according to the manufacture method of common permanent-magnet ferrite, and surface magnetic flux density only has 400-600Gs(China SZ-3 teslameter), flux torque is little, the power produced is little, and the load that can drive is little, and the occasion large for some loads cannot normally use, and product utilize space little, added value is low.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of manufacture method of permanent magnet machine rotor, there is the effect that the load that is large, that can drive of flux torque power that is large, that produce is large.
To achieve these goals, the technical solution used in the present invention is: a kind of manufacture method of permanent magnet machine rotor, and a kind of manufacture method of permanent magnet machine rotor, comprises the following steps:
(1) ball milling: mixed with the ratio of water in 1:1 by magnetic, adds the mixing steel ball between φ 3 ~ φ 10, stops ball milling when recording with Particle Size Analyzer when particle mean size is 0.8 μm;
(2) premagnetization: the slurry obtained by ball milling is squeezed in mould, the additional magnetic field orientating being greater than 10000GS, under the condition of orientation, upper and lower oil cylinder carries out, slowly to pressure, being extruded by water, forming magnetic patch with the speed of 1mm/S;
(3) dry: the magnetic patch water content after compacting, about 20%, is dried and made its water content below 0.5%;
(4) pulverize: the magnetic patch after drying is pulverized, with alcohol, camphor solution, the abundant mix and blend of calcium stearate additive, makes the dispersed mixing of above-mentioned substance;
(5) expanded dispersion: mixed material powder is put into the abundant expanded dispersion of air-flow micro mist equipment, expanded ratio is 1:5;
(6) orientation compacting: the material powder after expanded dispersion is added in the circular hole of mould, adds the magnetic field of 10000GS in the radial direction of circular die, in the process of compacting, magnetic field stops by 5 seconds orientations one, three times repeatedly;
(7) sinter: after compressing, high temperature sintering, sintering temperature controls at about 1200 DEG C;
(8) finished product is processed into by mill.
The invention has the beneficial effects as follows: there is the effect that the load that is large, that can drive of flux torque power that is large, that produce is large.
Embodiment
The present invention includes following steps:
(1) ball milling: mixed with the ratio of water in 1:1 by magnetic, adds the mixing steel ball between φ 3 ~ φ 10, stops ball milling when recording with Particle Size Analyzer when particle mean size is 0.8 μm;
(2) premagnetization: the slurry obtained by ball milling is squeezed in mould, the additional magnetic field orientating being greater than 10000GS, under the condition of orientation, upper and lower oil cylinder carries out, slowly to pressure, being extruded by water, forming magnetic patch with the speed of 1mm/S;
(3) dry: the magnetic patch water content after compacting, about 20%, is dried and made its water content below 0.5%;
(4) pulverize: the magnetic patch after drying is pulverized, with alcohol, camphor solution, the abundant mix and blend of calcium stearate additive, makes the dispersed mixing of above-mentioned substance;
(5) expanded dispersion: mixed material powder is put into the abundant expanded dispersion of air-flow micro mist equipment, expanded ratio is 1:5;
(6) orientation compacting: the material powder after expanded dispersion is added in the circular hole of mould, adds the magnetic field of 10000GS in the radial direction of circular die, in the process of compacting, magnetic field stops by 5 seconds orientations one, three times repeatedly;
(7) sinter: after compressing, high temperature sintering, sintering temperature controls at about 1200 DEG C;
(8) finished product is processed into by mill.
The present invention's wet ball grinding, wears into the single domain particle of 0.8 μm by permanent magnet ferrite powder; After rerolling, fully pulverize with air-flow micro-crushing equipment, magnetic domain material is fully disperseed, overall ferromagnetic material can be allowed to resolve into as much as possible and independently singly raise particle, make it not hinder by the stop of other magnetic domains in orientation process.PH value be 7 neutral water be the good medium that single domain particle self turns to when orientation.Mixed with water by single domain particle, mixed water content of materials, between 45%-50%, can be supplied to the good orientation environment of magnetic domain particulate.In the present invention with water hybrid orientation, and dry-pressing process be interrupted orientation; Thus make the arrangement of magnetic domain particulate close to completely the same arrangement.
Claims (1)
1. a manufacture method for permanent magnet machine rotor, is characterized in that, comprises the following steps:
(1) ball milling: mixed with the ratio of water in 1:1 by magnetic, adds the mixing steel ball between φ 3 ~ φ 10, stops ball milling when recording with Particle Size Analyzer when particle mean size is 0.8 μm;
(2) premagnetization: the slurry obtained by ball milling is squeezed in mould, the additional magnetic field orientating being greater than 10000GS, under the condition of orientation, upper and lower oil cylinder carries out pressure with the speed of 1mm/S, is extruded by water, forms magnetic patch;
(3) dry: the magnetic patch water content after compacting, about 20%, is dried and made its water content below 0.5%;
(4) pulverize: the magnetic patch after drying is pulverized, with alcohol, camphor solution, the abundant mix and blend of calcium stearate additive, makes the dispersed mixing of above-mentioned substance;
(5) expanded dispersion: mixed material powder is put into the abundant expanded dispersion of air-flow micro mist equipment, expanded ratio is 1:5;
(6) orientation compacting: the material powder after expanded dispersion is added in the circular hole of mould, adds the magnetic field of 10000GS in the radial direction of circular die, in the process of compacting, magnetic field stops by 5 seconds orientations one, three times repeatedly;
(7) sinter: after compressing, high temperature sintering, sintering temperature controls at about 1200 DEG C;
(8) finished product is processed into by mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210358243.3A CN102843002B (en) | 2012-09-24 | 2012-09-24 | A kind of manufacture method of permanent magnet machine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210358243.3A CN102843002B (en) | 2012-09-24 | 2012-09-24 | A kind of manufacture method of permanent magnet machine rotor |
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| Publication Number | Publication Date |
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| CN102843002A CN102843002A (en) | 2012-12-26 |
| CN102843002B true CN102843002B (en) | 2015-10-28 |
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| CN201210358243.3A Active CN102843002B (en) | 2012-09-24 | 2012-09-24 | A kind of manufacture method of permanent magnet machine rotor |
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| CN107200569A (en) * | 2017-04-11 | 2017-09-26 | 江门市中磁机电有限公司 | A kind of high-performance dry-pressing permanent-magnet ferrite rotor and its manufacture method |
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| JP4877514B2 (en) * | 2006-03-30 | 2012-02-15 | Ｔｄｋ株式会社 | Manufacturing method of sintered ferrite magnet |
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| CN101205137A (en) * | 2007-01-18 | 2008-06-25 | 横店集团东磁股份有限公司 | Method for manufacturing dry-pressing formed sintered permanent ferrite |
| CN101599333A (en) * | 2009-04-28 | 2009-12-09 | 横店集团东磁股份有限公司 | The manufacture method of anisotropic multi-pole magnetic ring through dry-press forming |
| CN101716538A (en) * | 2009-11-06 | 2010-06-02 | 宜宾金川电子有限责任公司 | Permanent ferrite slurry ball-milling technology |
| CN102173768A (en) * | 2011-01-21 | 2011-09-07 | 海安县巨力磁材有限责任公司 | Preparation method of high-performance radially isotropic dry pressing permanent magnetic ferrite |
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Effective date of registration: 20201208 Address after: 221000 west side of Xujia expressway, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou jiameile Electrical Technology Co., Ltd Address before: 221000 Qingshan Textile Industrial Park, Jiawang District, Jiangsu, Xuzhou Patentee before: XUZHOU CURRENCY MAGNETOELECTRICITY Co.,Ltd. |