In the process of using acid copper plating brightener, the appropriate amount of chloride ion in the plating solution can reduce the stress of the copper coating, improve the toughness of the copper coating, and also improve the brightness and flatness of the copper coating.However, when the chloride ion content is too high, it will lead to rough coating, dendritic stripes and loss of brightness.So how do we remove the excess chloride ion in the plating solution?
According to the site experience and the characteristics of acid copper plating brightener Cu-510, Bigolly Technology has analyzed the following two points:
1. Zinc powder treatment.Using zinc powder to treat acid copper plating bath can reduce the content of chloride ion in the bath.During the production process, 1~3g/L zinc powder can be added under stirring. It can be mixed into a paste and then added. After adding, it can be stirred for 30min, and then 2~3g/L activated carbon can be added. After stirring for about 3 hours, the plating solution can be filtered after standing for half an hour, and then an appropriate amount of bright additives can be added. After stirring evenly, production can be resumed.
2. Electrolytic treatment with insoluble anode.The copper anode is changed into insoluble titanium or graphite anode.Heat the plating solution to 40~50 ℃, and then conduct electrolytic treatment to remove the chloride ion in the plating solution on the anode.During electrolysis, heating of the bath can reduce the solubility of chloride ion in the bath, and prevent the dissolution of chloride ion in the bath from affecting the performance of the bath.In the process of electrolysis, it is necessary to stir the plating solution and properly increase the anode current density to accelerate the oxidation rate of chloride ions.
Therefore, when we use acid copper plating brightener for production, the excess chloride ion in the plating solution can be removed by the above two methods, so as to eliminate the fault as much as possible and reduce the loss caused by the fault.If you are interested in acid copper plating brightener, please contact Bigolly customer service for free samples and detailed technical information!