When we use nickel plating additives for production, sometimes the plating solution is still turbid after repeated filtration, and a frosted coating will appear on the workpiece. What is the reason?
When we use nickel plating brighteners, we always encounter such a phenomenon: the workpiece is very clean in the pretreatment, but the plating layer has pinholes after nickel plating.So what details in the electroplating process will cause pinholes in the coating?
After we use acid copper plating brightener for a period of time, monovalent copper ions will be generated in the plating solution, which will affect the quality of the plating layer.Some customers will use hydrogen peroxide to treat the plating solution, but it will reduce the sulfuric acid content in the plating solution. Why?
In the process of using chromium plating additives, sometimes the coverage of the coating is poor, which affects the appearance and performance quality of the workpiece coating.So what causes this phenomenon?
When we use galvanized trivalent chromium black passivator, sometimes the passivation film of the workpiece is uneven in black, and some do not form a film on the edge of the workpiece, so the appearance of the workpiece is very unsightly, and the corrosion resistance is also very poor.So what is the reason for the uneven black color of the passivation film of the workpiece?
In the process of using alkaline zinc-nickel alloy additives, we need to control the ratio of zinc and nickel in the plating solution to ensure that the nickel content in the alloy coating is 12~16%. So what exactly should we do?