Many customers encounter such a situation: when using the same electro-galvanizing brightener to prepare the galvanizing solution, the thickness of the coating obtained from the workpiece after hanging galvanizing for about ten minutes is reduced, while it takes tens of minutes or even longer for barrel galvanizing. Why is this so?
1.The influence of the workpiece mixing cycle. During rack plating, the workpieces are electroplated separately and continuously. However, during barrel plating, the workpieces are concentrated together and electroplated in a state of intermittent engagement and disengagement. This process generates the mixing cycle of the workpieces, that is, the time it takes for the workpieces to flip from the inner layer to the outer layer and then back to the inner layer. Due to the influence of the mixing cycle on the workpiece, it cannot be plated all the time as in rack plating. Only when the workpiece is on the outer layer can it be plated normally. Therefore, the electroplating time of barrel plating is not entirely valid; only the time when the workpiece is on the outer layer is valid.
2. The influence of the drum's closed structure. During the rack plating process, the workpiece is carried out in a completely exposed state, and there is no obstruction between the workpiece and the anode plate. During barrel plating, the workpiece is relatively enclosed, the concentration of the plating solution is relatively low, and there is an additional barrier between it and the anode plate. Therefore, the resistance encountered during the transmission of such materials is greater than that during rack plating. During the production process, due to the closed structure of the drum, the plating solution inside the drum cannot be replenished in time from the fresh plating solution outside the drum. As a result, the concentration of metal ions drops rapidly, and the current efficiency of the cathode decreases quickly. Consequently, the deposition rate of the coating on the workpiece is relatively slow.
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 additives. As a famous electroplating additives source manufacturer 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.
