CN103911072A - Coating solution for neodymium iron boron magnet surface protection and use method thereof - Google Patents
Coating solution for neodymium iron boron magnet surface protection and use method thereof Download PDFInfo
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- CN103911072A CN103911072A CN201210592650.0A CN201210592650A CN103911072A CN 103911072 A CN103911072 A CN 103911072A CN 201210592650 A CN201210592650 A CN 201210592650A CN 103911072 A CN103911072 A CN 103911072A
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- masking liquid
- iron boron
- neodymium iron
- magnetic body
- coating solution
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Abstract
The invention provides a coating solution for improving the surface corrosion resistance of a neodymium iron boron magnet and a spray coating method for the coating solution. Specifically, an immersion Zahn 2# viscosity cup is employed to measure all components, the flow time is 40-50s, and the proportion of the coating solution is 1.2-1.4g/cm<3>. The spraying method includes: using a spray coater to conduct spray coating on a cleaned neutral neodymium iron boron magnet surface, carrying out heating and degassing by a high temperature curing furnace, performing curing, inverting the magnet and conducting degassing and curing, thus completing the spray coating process. The coating solution and the spray coating method are simple and environmentally friendly, and also the formed coating has strong corrosion resistance and high binding force.
Description
Technical field
The present invention relates to neodymium iron boron magnetic body manufacture field, particularly a kind of Novel anticorrosion coating production that is applicable to neodymium iron boron magnetic body, this kind of preparation method has environment friendly, higher bonding force, stronger solidity to corrosion and lower aging breakage rate.
Background technology
At present, knownly mainly contain two kinds for neodymium iron boron magnetic body anticorrosion technique.One is electroplating technology, and this technology is utilized electrolysis process, and metal or alloy is deposited on to plating piece surface, forms the process for treating surface of metal plating, prevents that burn into from improving the effects such as wear resistance thereby play.Another kind is to have chromium Dacromet Technology, and it is a kind of protective system take zinc powder, aluminium powder, chromic acid and deionized water as main component, by the passivation of chromic acid and the galvanic protection effect of aluminum zinc powder, improves solidity to corrosion, the bonding force etc. of magnet.First two aseptic technic, owing to having electroplating effluent and sexavalence chromium metal, can cause serious pollution to environment.
Summary of the invention
In order to overcome the deficiency of the existing environmental pollution bringing for neodymium iron boron magnetic body anticorrosion technique, the invention provides a kind of novel neodymium iron boron magnetic body corrosion protection coating technology, this technology not only has strong solidity to corrosion, high bonding force and lower aging breakage rate to magnet, and preparation process has environment friendly.
The invention provides a kind of masking liquid that improves neodymium iron boron magnetic body surface anticorrosive performance, it comprises following component by percentage to the quality:
Zinc powder: 46-56.6%;
Aluminium powder: 7.4-11%;
Solubility promoter: 24.6-28.2%;
Tensio-active agent: 3.6-5.2%;
Film coalescence aid: 6.5-9.6%;
PH conditioning agent: 2-3%;
Sanitas: 1.8-3.5%;
Deionized water: 80-88%;
Resin: 12-15%.
Wherein said component is by percentage to the quality:
Zinc powder: 46-56.6%;
Aluminium powder: 7.4-11%;
Ethylene glycol solubility promoter: 24.6-28.2%;
Alkylphenol polyoxyethylene tensio-active agent: 3.6-5.2%;
Ethyl cellosolve acetate film coalescence aid: 6.5-9.6%;
Boric acid PH conditioning agent: 2-3%;
Sodium phytate sanitas: 1.8-3.5%;
Deionized water: 80-88%;
Water soluble resin: 12-15%;
Wherein, described zinc powder is sheet, and its average sheet footpath is 15-25 μ m, and thickness is 0.1-0.3 μ m.
Wherein, described aluminium powder is sheet, and its average sheet footpath is 15-25 μ m, and thickness is 0.1-0.3 μ m.
Wherein, described masking liquid adopts immerseable flow cup to measure and is coated with fluid viscosity, and the time of stream is 40-50s, and masking liquid proportion is 1.2-1.4g/cm3.
Wherein, described flow cup is measured and is adopted No. 2 cups of Chai Shi that aperture is 2.74mm to measure painting fluid viscosity.
It is a kind of for spraying the spraying method of above-mentioned masking liquid that the present invention also provides, masking liquid described in use the present patent application sprays, its step comprises: by neodymium iron boron magnetic body surface cleaning, spraying machine parameter is set to be sprayed, sintering oven heating is degassed, and solidifies, and reversion is degassed, solidify, complete spraying process.
Apply the neodymium iron boron magnetic body of coating of the present invention and spraying method spraying, not only there is strong solidity to corrosion, high bonding force and lower aging breakage rate, and preparation process has environment friendly.
Embodiment
The invention provides a kind of masking liquid that improves neodymium iron boron magnetic body surface anticorrosive performance, it comprises following component by percentage to the quality: masking liquid starting material be by:
Zinc powder: mass ratio 46-56.6%, average sheet footpath is 18 μ m, thickness is the zinc flake of 0.1-0.3 μ m;
Aluminium powder: mass ratio 7.4-11%, average sheet footpath is 15-25 μ m, thickness is the flake aluminum of 0.1-0.3 μ m;
Solubility promoter: the ethylene glycol that mass ratio is 24.6-28.2%;
Tensio-active agent: the alkylphenol polyoxyethylene that mass ratio is 3.6-5.2%;
Film coalescence aid: the ethyl cellosolve acetate that mass ratio is 6.5-9.6%;
Sanitas: the sodium phytate that mass ratio is 1.8-3.5%;
Deionized water: the deionized water that mass ratio is 80-88%;
Resin: the water soluble resin that mass ratio is 12-15%;
PH conditioning agent: the boric acid composition that mass ratio is 2-3%.
First, measure and be coated with fluid viscosity with No. 2 cups of the Chai Shi that is 2.74mm with aperture, the time of stream is: 40-50s, and masking liquid proportion is 1.2-1.4g/cm3;
The invention provides a kind of method that improves neodymium iron boron magnetic body surfacecti proteon performance, use the masking liquid described in the present patent application to spray, it comprises the steps:
1) clean neodymium-iron-boron surface with acid, water;
2) to the neodymium iron boron magnetic body spraying after cleaning;
3) spray parameters is: travelling belt transfer rate is 1.5m/min, and spray pressure is 0.4Mpa, and opening spray gun number is two of opening for feeds, two of discharge ports.After above-mentioned parameter sets, the neodymium iron boron magnetic body of needs spraying is put on travelling belt, automatically complete the one side spraying process to magnet by spraying machine PLC circuit and photoelectric induction device;
4) neodymium iron boron magnetic body spraying is sent into sintering oven and heated and degas, the temperature of degassing is 180 ℃, degass 30 minutes time.After finishing when degassing, temperature is elevated to 330 ℃ coating is carried out to hot setting, be 20 minutes set time;
5) by magnet reversion, another side is sprayed, degass, solidified, complete the coating procedure to neodymium iron boron magnetic body.
The neodymium iron boron magnetic body that uses galvanized method and use Chrome-free masking liquid of the present invention and spraying method to obtain, carry out various parameter detecting contrasts, wherein, get the mean value of 50 magnetic steel of motor samples, neutral salt spray test, carries out according to the rare-earth trade standard x B/T903-2002 of the People's Republic of China (PRC); Bonding force, carries out according to the 4th Machinery Ministry ministerial standard SJ1282-77 of the People's Republic of China (PRC); Flux detection and weathering test are carried out according to company standard.Detected result contrast table is as follows:
From detected result comparing result: the neodymium iron boron magnetic body spraying by Chrome-free masking liquid, not only there is stronger bonding force, higher solidity to corrosion, and this spraying process can not produce toxic waste liquid and toxic gas, there is environment friendly, product, after user uses, meets user's service requirements.
It should be noted that: above embodiment is only unrestricted in order to the present invention to be described, the present invention is also not limited in above-mentioned giving an example, and all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in claim scope of the present invention.
Claims (7)
1. improve a masking liquid for neodymium iron boron magnetic body surface anticorrosive performance, it comprises following component by percentage to the quality:
Zinc powder: 46-56.6%;
Aluminium powder: 7.4-11%;
Solubility promoter: 24.6-28.2%;
Tensio-active agent: 3.6-5.2%;
Film coalescence aid: 6.5-9.6%;
PH conditioning agent: 2-3%;
Sanitas: 1.8-3.5%;
Deionized water: 80-88%;
Resin: 12-15%.
2. masking liquid as claimed in claim 1, wherein said component is by percentage to the quality:
Zinc powder: 46-56.6%;
Aluminium powder: 7.4-11%;
Ethylene glycol solubility promoter: 24.6-28.2%;
Alkylphenol polyoxyethylene tensio-active agent: 3.6-5.2%;
Ethyl cellosolve acetate film coalescence aid: 6.5-9.6%;
Boric acid PH conditioning agent: 2-3%;
Sodium phytate sanitas: 1.8-3.5%;
Deionized water: 80-88%;
Water soluble resin: 12-15%.
3. masking liquid as claimed in claim 2, wherein said zinc powder is sheet, and its average sheet footpath is 15-25 μ m, and thickness is 0.1-0.3 μ m.
4. masking liquid as claimed in claim 2, wherein said aluminium powder is sheet, and its average sheet footpath is 15-25 μ m, and thickness is 0.1-0.3 μ m.
5. masking liquid as claimed in claim 1, wherein said masking liquid adopts immerseable flow cup to measure and is coated with fluid viscosity, and the time of stream is 40-50s, and masking liquid proportion is 1.2-1.4g/cm
3.
6. coating as claimed in claim 5, wherein said flow cup is measured and is adopted No. 2 cups of Chai Shi that aperture is 2.74mm to measure painting fluid viscosity.
7. one kind is improved the method for neodymium iron boron magnetic body surfacecti proteon performance, it is characterized in that using any one masking liquid as described in claim 1-6 to spray, its step comprises neodymium iron boron magnetic body surface cleaning, spraying machine parameter is set to be sprayed, sintering oven heating is degassed, and solidifies, and reversion is degassed, solidify, complete spraying process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210592650.0A CN103911072A (en) | 2012-12-28 | 2012-12-28 | Coating solution for neodymium iron boron magnet surface protection and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210592650.0A CN103911072A (en) | 2012-12-28 | 2012-12-28 | Coating solution for neodymium iron boron magnet surface protection and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103911072A true CN103911072A (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210592650.0A Pending CN103911072A (en) | 2012-12-28 | 2012-12-28 | Coating solution for neodymium iron boron magnet surface protection and use method thereof |
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| CN (1) | CN103911072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622341A (en) * | 2018-11-12 | 2019-04-16 | 江西荧光磁业有限公司 | A kind of process of surface treatment of neodymium iron boron magnetic materials high-strength corrosion-resistant erosion |
| CN112439675A (en) * | 2019-09-04 | 2021-03-05 | 沈阳新铭天合金材料有限公司 | Rare earth magnetic anti-corrosion spraying process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001099127A2 (en) * | 2000-06-19 | 2001-12-27 | The University Of Iowa Research Foundation | Coated metallic particles, methods and applications |
| CN1670089A (en) * | 2005-04-29 | 2005-09-21 | 北京永泰和金属防腐技术有限公司 | Anti-corrosion paint for metal with improved corrosion resistance |
| CN1749329A (en) * | 2005-06-07 | 2006-03-22 | 武汉材料保护研究所 | Coating process for neodymium-iron-boron permanent magnetic material |
| CN102653643A (en) * | 2012-04-24 | 2012-09-05 | 包头稀土研究院 | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet |
-
2012
- 2012-12-28 CN CN201210592650.0A patent/CN103911072A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001099127A2 (en) * | 2000-06-19 | 2001-12-27 | The University Of Iowa Research Foundation | Coated metallic particles, methods and applications |
| CN1670089A (en) * | 2005-04-29 | 2005-09-21 | 北京永泰和金属防腐技术有限公司 | Anti-corrosion paint for metal with improved corrosion resistance |
| CN1749329A (en) * | 2005-06-07 | 2006-03-22 | 武汉材料保护研究所 | Coating process for neodymium-iron-boron permanent magnetic material |
| CN102653643A (en) * | 2012-04-24 | 2012-09-05 | 包头稀土研究院 | Zinc-based composite coating for improving corrosion resistance of neodymium-iron-boron magnet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622341A (en) * | 2018-11-12 | 2019-04-16 | 江西荧光磁业有限公司 | A kind of process of surface treatment of neodymium iron boron magnetic materials high-strength corrosion-resistant erosion |
| CN112439675A (en) * | 2019-09-04 | 2021-03-05 | 沈阳新铭天合金材料有限公司 | Rare earth magnetic anti-corrosion spraying process |
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Application publication date: 20140709 |