Some customers reported that in the process of using high-speed tin plating additives, sometimes there are too many foam in the plating solution, which is easy to bring foam to the rear plating bath, thus affecting the electroplating effect of the workpiece. What is the cause of too much foam in the bath?
Based on on-site experience and the characteristics of Sn-819, a high-speed tin plating additive, Bigley Technology has analyzed the following three main points:
1. The stirring of the plating solution is too intense. The high-speed tin plating process is to move the cathode, which can improve the brightness of the coating and production efficiency. However, it is necessary to control the stirring speed, because too violent will lead to more foam in the plating solution.
2. Air is drawn into the filtration system. During the production process, large foam will be produced when the plating solution returns to the plating tank due to air. Therefore, the filtering system should be checked during the production process, and the regular exhaust can reduce the large foam produced by the plating solution.
3. Excessive hydrogen evolution during the tin plating process of the workpiece. Generally, it is caused by excessive current density of the plating solution. Although high current can improve production efficiency, the coating is rough and brittle, and the plating solution is prone to produce large foam. In addition, it may be the additives themselves. Some tin plating additives will produce large foam in the production process due to formula defects. For this, Bigley recommends customers to use low foam additives, such as high-speed tin plating additive Sn-819, which can refine crystallization, reduce pores and avoid too much foam in the plating solution.
Therefore, in the process of using high-speed tin plating additives, too much foam in the bath should be paid attention to the above three points, and faults should be eliminated in time to reduce the occurrence of faults. If you are interested in high-speed tin plating additives, please contact Bigley customer service for free samples and detailed technical information!
If you want to learn more about tin plating, you can click to view the "Common problem".