Electroplate liquid, electroplating method and product
A technology of electroplating solution and electroplating parts, applied in the direction of metal material coating process, etc., can solve the problems of high pre-treatment requirements, low production efficiency, high resistivity, etc., and achieve the effect of good bonding force consistency and stable bonding.
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[0057] Embodiment 1: A double-layer zinc electroplating method for neodymium iron boron magnets, including the following steps:
[0058] ①Put the neodymium iron boron magnets before plating. The specific processing steps are: sequentially putting the neodymium iron boron magnets into the degreasing tank for degreasing treatment, the pickling tank for derusting treatment, and the deashing tank for deashing treatment. The degreasing treatment is a treatment time of 300-600s in a metal degreasing agent. The rust removal treatment is another treatment in nitric acid with a concentration of 3-7% for 30-60s. Deashing treatment is leaching in 3-hydroxy-1,3,5-glutaric acid solution for 30-60s.
[0059] ② Put the pre-treated neodymium iron boron magnet into the electroplating drum (hanger).
[0060] ③Put the drum into the first electroplating bath containing the first electroplating solution for the first electrogalvanizing treatment. The electroplating temperature is 15℃. After electropla...
Example
[0067] Embodiments 2 to 9: a double-layer zinc electroplating method for neodymium iron boron magnets
[0068] The steps ①, ②, and ⑤ of the second to the ninth embodiment are the same as the corresponding operations in the first embodiment, and their difference from the first embodiment is that the parameter values in steps ③ and ④ are different. Refer to Table 1 for the parameter values that are not exactly the same in Examples 1 to 9.
[0069] Table 1: Parameter statistics table in Examples 1 to 9
[0070] Example number
Example Embodiment
[0120] The electro-galvanizing of the NdFeB magnet obtained in step ③ of Example 9 is superior to the electro-galvanizing of the NdFeB magnet obtained in step ③ of Comparative Example in terms of shear force and the qualified amount of salt spray, which shows not only the method of the present invention The obtained double-layer zinc galvanized parts of the neodymium iron boron magnet have good performance, and the addition of polyether to the single-layer zinc galvanized parts obtained based on the first electroplating solution also plays a role in improving the physical and chemical properties of the product.
[0121] In summary, the present invention provides a double-layer zinc electroplating method for neodymium iron boron magnets. The prepared galvanized layer can not only ensure the bonding force requirements, but also high plating efficiency, and can also ensure the corrosion resistance requirements. It has potential industrial application value.
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