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Precautions for nickel plating on stainless steel shrapnel

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

   Heju Precision Electronic Technology Co., Ltd. is a precision stamping processing enterprise. Professional production and processing of stainless steel shrapnel Beryllium copper spring, hardware terminals, stretching parts, lead frame and other small hardware components. Products are widely used in connectors, micro motors, acoustic components, sensors, automotive electronics, new energy, medical electronics, smart home, diodes and transistors IC packaging and other industries.  

Stainless steel shrapnel What problems should be paid attention to in nickel plating? In order to ensure the surface quality and performance of the product.

1 The surface film must be removed Otherwise, the coating is rough and not easy to be bright. 2、 Stainless steel stripping should not be directly put into concentrated nitric acid, but should be electrolyzed to remove the chromium layer, and then put into the fine dilute nitric acid, which is conducive to the adhesion of the coating. 3、 Degreasing must be thorough, or it will cause poor adhesion of coating. 4、 When pre nickel plating, the iron ion in the solution shall not exceed 10 g / L, and the copper ion shall not exceed 1 g / L. 5、 When copper plating is carried out after nickel plating, cyanide copper plating is not easy to be too thick, free sodium cyanide is not easy to be too low, and current density is not easy to be too large, otherwise it is easy to cause poor adhesion. 6、 Low pH nickel chloride solution was used for pre plating, and then impact nickel plating was carried out after hydrochloric acid washing.

Processing of stainless steel shrapnel Pay attention to the above six points when nickel plating. The surface quality and performance of the product can be guaranteed.

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