Anticorrosive electroplating method for Nd-Fe-B magnet steel
A technology of NdFeB and magnetic steel, which is applied in the field of anti-corrosion electroplating of NdFeB magnetic steel, which can solve the problems of insufficient cleanliness of the product surface, high cost of waste liquid treatment, and difficulty in waste liquid treatment, so as to reduce sewage treatment Low cost, excellent filling and leveling performance, and the effect of shortening the plating time
Active Publication Date: 2010-11-24
东阳市银海磁业有限公司
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Problems solved by technology
NdFeB permanent magnets are easily oxidized in the air and are easily corroded in many environments, resulting in reduced magnetic properties and shortened lifespan
The Chinese patent application with the application number 200410048456.6 discloses a method for coating a double-layer alloy coating on the surface of NdFeB, but the coating of this method is thicker, the required electroplating time is longer, and the surface cleanliness of the obtained product is not enough Well, at the same time, it is difficult to deal with the waste liquid produced by electroplating, and the cost of waste liquid treatment is relatively high
Method used
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Embodiment 2
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The invention relates to an electroplating method used for the corrosion prevention of the NdFeB magnet steel. The electroplating method comprises the steps of preliminary treatment, nanometer composite plating, electrotinning, bright nickel electroplating. The corrosion preventative property of the product obtained by the method is extremely outstanding, on the premise that the identical corrosion prevention effect is achieved, the thickness of the coating is 60 to 70 percent of the total thickness of the traditional multi-layer nickel; on the premise that the product quality is improved, the electroplating time is reduced, simultaneously the expensive metal nickel or copper is saved, and the cost is reduced.
Description
Electroplating method for anti-corrosion of NdFeB magnets technical field The invention relates to an electroplating method for anti-corrosion of NdFeB magnetic steel. Background technique NdFeB permanent magnets are easily oxidized in the air, and are easily corroded in many environments, resulting in reduced magnetic properties and shortened lifespan. The Chinese patent application with the application number 200410048456.6 discloses a method for coating a double-layer alloy coating on the surface of NdFeB, but the coating of this method is thicker, the required electroplating time is longer, and the surface cleanliness of the obtained product is not enough Well, at the same time, it is difficult to deal with the waste liquid produced by electroplating, and the cost of treating the waste liquid is relatively high. Contents of the invention The invention solves the above-mentioned technical problems existing in the prior art, and provides a method for producing an ant...
Claims
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IPC IPC(8): C25D5/14
Inventor 张有平
Owner 东阳市银海磁业有限公司