In the process of using decorative chrome plating additives, the surface of the workpiece coating will appear circular.This circular phenomenon can not be removed even by wiping. After the chrome layer is removed, it is found that this circular phenomenon on the coating disappears.So how can there be such a circular phenomenon on the coating surface?
According to the site experience and the characteristics of the decorative chrome plating additive Cr-9, Bigolly Technology analyzed the following two points:
1. The workpiece is not cleaned properly after nickel plating.In the production process, because the nickel plating additive is added in stages, the content of the additive in the plating solution will be high when the additive is just added, and the residual additive on the surface of the workpiece is not thoroughly cleaned, so it is easy to appear the phenomenon of circle shape during the chromium plating.This phenomenon is easy to occur in the manual line due to the influence of manual operation.
2. The surface of the nickel layer of the workpiece is contaminated by chromic acid.In the process of production, the operation of the nickel layer of the workpiece and the chrome plating bath will easily lead to the contact between the surface of the nickel layer and chromic acid, and the nickel layer will be passivated, and the phenomenon of circle shape will easily appear during the chrome plating.
Therefore, in the process of using decorative chrome plating additives, in order to avoid the circular phenomenon on the surface of the workpiece coating, we should strengthen the water washing after nickel plating, and also avoid the passivation of the nickel coating caused by the operation of the nickel coating and the chromium plating bath.If you are interested in decorative chrome plating additives, please contact Bigolly customer service for free samples and detailed technical information!
If you want to know more about chrome plating,you can click to view "Common problem".