Some customers said that they used alkaline galvanized production process, after the use of colored zinc passivator, they found that the workpiece will appear very serious discoloration phenomenon, resulting in the need to return the workpiece for rework, which caused great economic losses. So, what causes the coating of the workpiece to discolor?
To achieve a bluer trivalent chromium blue zinc passivate film color, some parameters in the passivation process need to be carefully adjusted. The following are some of the factors that may affect the color of the passivate film:
In acid galvanizing process, the binding force of the coating is affected by many factors, so it is very important to ensure good adhesion between the coating and the substrate. The factors that affect the binding force include surface preparation, plating solution composition and operating conditions.
Mr. He in Dongguan, Guangdong Province, is a boss engaged in various electronic components electroplating tin. Recently, Mr. He found in production that the plating solution is easy to turbidity after using fog tin additives, and the plating solution must be treated once every three or five days, so the processing cost of the plating solution is high. So Mr. He wants to replace a good performance of methylsulfonic acid matte tin additive.
Some customers have asked that in the production process of using matte tin additives, sometimes the workpiece low area coating is prone to leakage plating phenomenon, which is caused by what?
When a plating plant uses tin plating brightener for production, how does the temperature need to be controlled to get good plating quality?