In the production process of using acid copper plating brightener, the dispersion ability of workpiece coating is relatively poor, and the thickness difference between high and low areas is relatively large. What causes this?
According to the field experience and the characteristics of the product acid copper plating brightener Cu-510, Bigolly Technology has made analysis, mainly for the following four reasons:
1. If the concentration of copper sulfate in the bath is too high or too low, the conductivity of the bath will be poor, the coating will be rough, the anode will be easily passivated, and the dispersion of the coating will be poor.Therefore, in the production process, the concentration of each component of the plating solution should be analyzed and controlled within the process range.
2. The temperature of the plating solution is relatively high.During production, the bath temperature shall be controlled within 20~45 ℃.Although higher temperature can improve the conductivity of the plating solution, the crystallization of the coating is relatively rough and the dislocation is relatively poor.
3. The leveller or brightener in the plating solution is insufficient.The leveller Cu-510A can improve the brightness and leveling effect of the low area of the coating. When Cu-510A is insufficient, the displacement effect of the coating is poor, and the phenomenon of bright fault will occur.The brightener Cu-510B is used to provide grain refinement, improve low area dispersion and wettability, and provide high and middle area brightness leveling effect. When Cu-510B is insufficient, the coating is poor in brightness leveling, roughness and dislocation.
4. The content of organic impurities in the plating solution is high.With the progress of production, the decomposition products of additives or grease are continuously accumulated in the plating solution.When the content of these organic impurities is high, the brittleness of the coating will be greater, the displacement effect will become worse, and the brightness will also become worse.
Therefore, we should pay attention to the above four points in the process of using acid copper plating brightener to ensure that the plating solution has a good displacement effect, reduce the occurrence of failures, and improve production efficiency.If you are interested in acid copper plating brightener, please contact the Bigolly customer service to obtain free samples and detailed technical information!
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