If the acidic copper plating brightener is added improperly, what problems might it cause? Let's take two common faults in large-scale production as examples to discuss why we should use scientific methods to add the brightener.
The orange peel is smooth and has a good shine with good dispersion. However, there are no pinholes.
It might be that the amounts of acid copper brightening agent MU and acid copper brightening agent A were excessive. We know that acid copper brightening agent MU is mainly used for opening the tank, but it is also necessary to add it in appropriate amounts (mainly to compensate for losses); while agent A is used to increase the brightening range and flatness in the medium and low current density areas. Some electroplating factories believe that the effects of these two agents are good, so they blindly add them in large-scale production, which often leads to the appearance of orange spots and waves on the coating.
Therefore, Bigely engineer suggests that when the electroplating plant adds the copper sulfate brightener, it should follow the Hall bath test to determine the optimal addition amount for each type. It must be realized that either too much or too little addition of the brightener will lead to a decrease in the synergistic effect, and attention should also be paid to the influence of chloride ion content.
The areas with high current density of the parts appear as white, rough or dark copper-like.
It might be that there is a shortage of chloride ions. As we mentioned in the previous article, chloride ions are also one type of acidic copper plating brightener. They are an indispensable component in the plating solution. Without chloride ions, it is impossible to obtain a well-brightened and smooth coating.
However, in actual production, due to differences in operation methods, water quality, purity of chemical materials, and equipment conditions, the chloride ion content may either increase or decrease. Therefore, it cannot be continuously replenished as a component of the mixed brightener and can only be controlled separately. Due to these reasons, some electroplating plants do not attach much importance to the role of chloride ions, resulting in unnecessary coating faults during production. Engineer Bigley suggests that when using acidic copper plating brighteners, some time should be allocated to reasonably adjust the chloride ion content, so as to ensure good coating brightness and flatness.
About us
Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D，production, sales and service, specializing in the production of electroplating chemicals. As a fast growing electroplating chemicals supplier in China, Bigely has over 20 years' experience in electroplating additives production and own production base of 5000 square meters. We can produce 15,000 tons of electroplating additives every year, which can fully meet the needs of customers.
If you need our high-quality electroplating additives, please contact us. We can provide you samples for test, and also provide a series of services.
