CN107604405A - Magneto neodymium iron boron magnetic materials electro-plating method - Google Patents
Magneto neodymium iron boron magnetic materials electro-plating method Download PDFInfo
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- CN107604405A CN107604405A CN201710993148.3A CN201710993148A CN107604405A CN 107604405 A CN107604405 A CN 107604405A CN 201710993148 A CN201710993148 A CN 201710993148A CN 107604405 A CN107604405 A CN 107604405A
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- neodymium iron
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Abstract
The invention provides a kind of magneto neodymium iron boron magnetic materials electro-plating method, including A, baking oil removing, B, surface finishing, C, sealing of hole：Zinc stearate is heated to 130~140 DEG C of fusings, magnetic material obtained by step B is impregnated into 30 ± 5min, takes out and 30min is dried at 600 DEG C, make its solidification；D, pickling, solution is prepared by 30~40mL/L of nitric acid, thiocarbamide 0.5g/L, the use of ammoniacal liquor regulation pH value is 4~5, to magnetic material 30 ± 10min of pickling obtained by step C under room temperature condition, untill piece surface is in uniform, careful, glossiness silvery white；E, activate；F, nickel is soaked；G, the step such as plating obtains finished product.The present invention can carry out batch processing to neodymium iron boron magnetic materials, and products obtained therefrom any surface finish, resistance to corrosion is strong, is suitable for magneto applying working condition.
Description
Technical field
The present invention relates to magneto material preparation method, and in particular to a kind of plating of magneto neodymium iron boron magnetic materials
Method.
Background technology
Magneto both can reach the incomparable high-performance of traditional electro-magnetic motor（Such as extra-high effect, ultrahigh-speed, extra-high
Response speed）, the specific type of electric machine for meeting specific run requirement can be constructed to again, so as to improve the property of supporting technical equipment
Energy and level, it is the important development direction of electromechanics trade industry restructuring.
Neodymium-iron-boron magnetic material makes a kind of permanent-magnet material, and its magnetic energy product is 5~6 times of Al-Ni-Co series, the pact of ferrite system
10 times, about 2 times of SmCo system, be the permanent-magnet material that magnetic is most strong so far, and prepare the ideal material of magneto.So
And neodymium iron boron is highly prone to corrode.So neodymium iron boron magnetic materials must carry out strict preservative treatment before use, can meet forever
The applying working condition requirement of magneto.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of magneto neodymium iron boron magnetic materials electro-plating method, can be right
Neodymium iron boron magnetic materials carry out batch processing, and products obtained therefrom any surface finish, resistance to corrosion is strong, is suitable for magneto applying working condition.
In order to solve the above technical problems, the magneto neodymium iron boron magnetic materials electro-plating method of the present invention comprises the following steps：
A, oil removing is toasted
Molded neodymium iron boron magnetic materials are put into baking box, 1h is toasted under the conditions of 200 DEG C；
B, surface finishing
Magnetic material obtained by step A is placed in vibratory finishing machine, start operation 2h, carries out surface finishing processing；
C, sealing of hole
Zinc stearate is heated to 130~140 DEG C of fusings, magnetic material obtained by step B is impregnated into 30 ± 5min, taken out at 600 DEG C
30min is dried, makes its solidification；
D, pickling
Solution is prepared by 30~40mL/L of nitric acid, thiocarbamide 0.5g/L, it is 4~5 to adjust PH values using ammoniacal liquor, right under room temperature condition
Magnetic material 30 ± 10min of pickling obtained by step C, untill piece surface is in uniform, careful, glossiness silvery white；
E, activate
Solution is prepared by 20~25g/L of sulfosalicylic acid, 10~15g/L of ammonium acid fluoride, to magnetic material obtained by step D under room temperature condition
Carry out activation process；
F, nickel is soaked
Solution is prepared according to nickel acetate 70g/L, boric acid 65g/L, hydrofluoric acid 170mL/L, to magnetic material obtained by step E under room temperature condition
Handle 30s immersion plating；
G, electroplate
Using electro-plating method, in magnetic material copper coating obtained by step F, 4 μm of thickness of coating, get product.
In the step B, the grinding stone of the vibratory finishing machine uses oblique triangle 4mm, and grinding stone granularity is 280 mesh.
In the step F, magnetic material surface forms 2 μm of nickel coating.
Advantages of the present invention is embodied in：A, the present invention is by multiple steps, formed on magnetic material surface 2 μm nickel coating, 4 μm
Copper plate so that product surface is bright and clean, possess good anti-corrosion capability, be suitable for magneto use environment；B、
Make piece surface smooth, smooth by polishing, so as to beneficial to coating is quick, uniform deposition.C, the hole to piece surface is passed through
Seal treatment is carried out, so that the treatment fluid of each procedure is not penetrated into hole thereafter, so as to avoid the internal corrosion of coating after plating, is protected
Quality is demonstrate,proved.D, by soaking nickel, plating Distributed Implementation, thickness of coating and electroplating effect are improved.
Embodiment
The magneto neodymium iron boron magnetic materials electro-plating method of the present invention comprises the following steps：
A, oil removing is toasted
Molded neodymium iron boron magnetic materials are put into baking box, 1h is toasted under the conditions of 200 DEG C.
B, surface finishing
Magnetic material obtained by step A is placed in vibratory finishing machine, start operation 2h, carries out surface finishing processing；
In the step B, the grinding stone of the vibratory finishing machine uses oblique triangle 4mm, and grinding stone granularity is 280 mesh.
C, sealing of hole
Zinc stearate is heated to 130~140 DEG C of fusings, magnetic material obtained by step B is impregnated into 30 ± 5min, taken out at 600 DEG C
30min is dried, makes its solidification.
D, pickling
Solution is prepared by 30~40mL/L of nitric acid, thiocarbamide 0.5g/L, it is 4~5 to adjust PH values using ammoniacal liquor, right under room temperature condition
Magnetic material 30 ± 10min of pickling obtained by step C, untill piece surface is in uniform, careful, glossiness silvery white.
E, activate
Solution is prepared by 20~25g/L of sulfosalicylic acid, 10~15g/L of ammonium acid fluoride, to magnetic material obtained by step D under room temperature condition
Carry out activation process.
F, nickel is soaked
Solution is prepared according to nickel acetate 70g/L, boric acid 65g/L, hydrofluoric acid 170mL/L, to magnetic material obtained by step E under room temperature condition
Handle 30s immersion plating；In the step F, magnetic material surface forms 2 μm of nickel coating.
G, electroplate
Using electro-plating method, in magnetic material copper coating obtained by step F, 4 μm of thickness of coating, get product.
Products obtained therefrom is through 48h neutral salt spray tests, and surface does not occur spot and other matrix corrosion signs, it was demonstrated that this hair
It is bright to possess good coating effect.
The embodiment of the present invention includes but is not limited to above-described embodiment, without departing substantially from spirit of the invention and in fact
In the case of matter, those skilled in the art can make various corresponding changes and deformation according to the present invention, but still fall
Enter protection scope of the present invention.
Claims (3)
1. a kind of magneto neodymium iron boron magnetic materials electro-plating method, comprises the following steps：
A, oil removing is toasted
Molded neodymium iron boron magnetic materials are put into baking box, 1h is toasted under the conditions of 200 DEG C；
B, surface finishing
Magnetic material obtained by step A is placed in vibratory finishing machine, start operation 2h, carries out surface finishing processing；
C, sealing of hole
Zinc stearate is heated to 130~140 DEG C of fusings, magnetic material obtained by step B is impregnated into 30 ± 5min, taken out at 600 DEG C
30min is dried, makes its solidification；
D, pickling
Solution is prepared by 30~40mL/L of nitric acid, thiocarbamide 0.5g/L, it is 4~5 to adjust PH values using ammoniacal liquor, right under room temperature condition
Magnetic material 30 ± 10min of pickling obtained by step C, untill piece surface is in uniform, careful, glossiness silvery white；
E, activate
Solution is prepared by 20~25g/L of sulfosalicylic acid, 10~15g/L of ammonium acid fluoride, to magnetic material obtained by step D under room temperature condition
Carry out activation process；
F, nickel is soaked
Solution is prepared according to nickel acetate 70g/L, boric acid 65g/L, hydrofluoric acid 170mL/L, to magnetic material obtained by step E under room temperature condition
Handle 30s immersion plating；
G, electroplate
Using electro-plating method, in magnetic material copper coating obtained by step F, 4 μm of thickness of coating, get product.
2. magneto as claimed in claim 1 neodymium iron boron magnetic materials electro-plating method, it is characterised in that：In the step B, institute
The grinding stone for stating vibratory finishing machine uses oblique triangle 4mm, and grinding stone granularity is 280 mesh.
3. magneto as claimed in claim 1 neodymium iron boron magnetic materials electro-plating method, it is characterised in that：In the step F, magnetic
Material surface forms 2 μm of nickel coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710993148.3A CN107604405A (en) | 2017-10-23 | 2017-10-23 | Magneto neodymium iron boron magnetic materials electro-plating method |
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| CN201710993148.3A CN107604405A (en) | 2017-10-23 | 2017-10-23 | Magneto neodymium iron boron magnetic materials electro-plating method |
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| CN201710993148.3A Pending CN107604405A (en) | 2017-10-23 | 2017-10-23 | Magneto neodymium iron boron magnetic materials electro-plating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983416A (en) * | 2019-12-31 | 2020-04-10 | 枣阳市旺前电泳涂料有限公司 | Electrophoretic paint painting process |
| CN111020659A (en) * | 2019-12-07 | 2020-04-17 | 爱科科技有限公司 | Method for reducing porosity of coating on surface of neodymium iron boron permanent magnet material |
Citations (4)
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| CN101280444A (en) * | 2007-12-29 | 2008-10-08 | 横店集团东磁有限公司 | Anticorrosive electroplating method for Nd-Fe-B magnet steel |
| CN102108511A (en) * | 2010-12-24 | 2011-06-29 | 烟台正海磁性材料股份有限公司 | Electroplating and chemical plating composite protecting process for NdFeB permanent magnet and NdFeB permanent magnet with composite protective layer |
| CN102568732A (en) * | 2012-02-22 | 2012-07-11 | 沈阳中北通磁科技股份有限公司 | NdFeB (neodymium iron boron) permanent magnet material with multilayer structure and preparation process thereof |
| CN102582157A (en) * | 2012-02-22 | 2012-07-18 | 沈阳中北通磁科技股份有限公司 | Anticorrosive neodymium iron boron permanent magnet surface clad layer material and processing technique thereof |
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2017
- 2017-10-23 CN CN201710993148.3A patent/CN107604405A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101280444A (en) * | 2007-12-29 | 2008-10-08 | 横店集团东磁有限公司 | Anticorrosive electroplating method for Nd-Fe-B magnet steel |
| CN102108511A (en) * | 2010-12-24 | 2011-06-29 | 烟台正海磁性材料股份有限公司 | Electroplating and chemical plating composite protecting process for NdFeB permanent magnet and NdFeB permanent magnet with composite protective layer |
| CN102568732A (en) * | 2012-02-22 | 2012-07-11 | 沈阳中北通磁科技股份有限公司 | NdFeB (neodymium iron boron) permanent magnet material with multilayer structure and preparation process thereof |
| CN102582157A (en) * | 2012-02-22 | 2012-07-18 | 沈阳中北通磁科技股份有限公司 | Anticorrosive neodymium iron boron permanent magnet surface clad layer material and processing technique thereof |
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| 任广军等: "烧结型钕铁硼电镀镍工艺", 《材料保护》 * |
| 刘伟等: "钕铁硼电镀技术生产现状与展望", 《电镀与精饰》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020659A (en) * | 2019-12-07 | 2020-04-17 | 爱科科技有限公司 | Method for reducing porosity of coating on surface of neodymium iron boron permanent magnet material |
| CN110983416A (en) * | 2019-12-31 | 2020-04-10 | 枣阳市旺前电泳涂料有限公司 | Electrophoretic paint painting process |
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Application publication date: 20180119 |