As we all know, in the production process of using Potassium chloride zinc plating brightener, when the zinc ion in the plating solution is insufficient, many electroplating enterprises directly add solid Potassium chloride into the plating solution, which is relatively simple and time saving. So does this operation have any impact on the plating solution?
Based on the field experience and the characteristics of the product Potassium chloride zinc plating brightener BZ-528, Bigley Technology has made an analysis and does not recommend this operation to customers, because this operation has an impact on the plating solution:
1. The solid Potassium chloride can not be dissolved immediately when it is added to the plating solution. It can only be completely dissolved in a few hours or a day or two, so the time for adjusting and supplementing the plating solution will be prolonged, delaying the normal production.
2. The dissolution of solid Potassium chloride in the plating solution will easily lead to the phenomenon that the concentration of Potassium chloride in the local plating solution is too high, which will cause the decomposition and precipitation of the brightener here. This will not only accelerate the accumulation of organic impurities in the plating solution, but also cause the uneven brightness of the zinc coating on the surface of the workpiece, and darken the low current area.
3. Solid Potassium chloride will directly bring some impurities into the bath during dissolution, which will seriously affect the stability of the bath and the quality of the coating.
Therefore, Bigley suggested that customers: during the production process of using Potassium chloride zinc plating brightener, when adding zinc ions to the plating solution, first dissolve the solid Potassium chloride in hot water outside the tank, then slowly stir it and add it to the plating solution to discard the precipitation, which can not only ensure that the plating solution is adjusted and supplemented, but also avoid bringing impurities into the plating solution, ensuring that the plating solution has good stability. If you are interested in Potassium chloride zinc plating brightener, please contact Bigley customer service for free samples and detailed technical information!
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