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Remedial measures for unqualified nickel coating on stainless steel shrapnel

 Back to list Source: Heju hardware Browse: - Release date: May 8, 2019【 large in Small

Dongguan Heju Precision Technology Electronics Co., Ltd. is a set of development, design, production, sales in one of the professional Stainless steel shrapnel manufacturing enterprises. Its products are widely used in household appliances, automobiles, motorcycles, communications and computers. The company should be equipped with advanced technology and high quality personnel to meet the needs of customers.

In the traditional metal plating process of stainless steel shrapnel, in the process of continuous nickel plating, when the thickness of continuous nickel coating is not enough or local continuous nickel plating is not enough, the supplementary plating method can be used.

Firstly, the shrapnel was anodized in the following solution: sulfuric acid dosage: The results showed that: 750g /; glycerin: 60g / L; chromic anhydride: 50g / L; oxalic acid: 10g / L; temperature control range: L5 ~ 25 ℃; Da specific parameters: 0.8 ~ 1.2a/dm2; control time in electroplating process: 4 ~ 7S.

After the solution treatment of the workpiece, immediately in the 1: 3 hydrochloric acid immersion for 1 ~ 3S, mainly to wash away the chromic acid that may be attached to the workpiece, and then wash it in the cyanide copper plating solution bath for copper plating.

DK specific parameters: 0.1 ~ 0.2a/dm2; time accuracy: 5 ~ 10 min.

Copper plating Stainless steel shrapnel After washing and soaking Dilute sulfuric acid of 30-50g / L is put into the continuous nickel plating bath immediately after washing, and the continuous nickel plating is supplemented according to the original process conditions. The repair time can be determined according to the required thickness.

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