In the production process of using alkaline zinc nickel alloy additive, the workpiece will be blackened at the hook, which will seriously affect the appearance quality of the workpiece.So, what causes this phenomenon?
In recent years, the tin plating process has been rapidly promoted in the electronic industry, and the requirements for the weldability of workpieces are becoming higher and higher.Some workpieces have poor welding performance of tin coating after using tin plating additives, which will greatly increase the failure rate due to welding quality problems.So what factors will affect the welding performance of the coating?
After using acid copper plating brightener, the workpiece can obtain a coating with mirror brightness, strong ductility and flatness.Sometimes, the color of the coating will quickly become dark or brown after the workpiece is coated with acid copper. What is the reason?
A customer asked that when using nickel plating additives for production, some electronic products are coated with nickel, and then the tin coating is easy to fall off during tin plating. What is the reason?
In the process of using zinc nickel alloy color passivator, sometimes the passivation film of the workpiece after passivation is not firm, and it is easy to be wiped off.What causes this?
In the process of using zinc nickel alloy brightener, we need to control the concentration of zinc ion, nickel ion and sodium hydroxide in the bath to obtain protective zinc nickel alloy coating with high decorative and corrosion resistance.Sometimes the nickel content in the coating of the workpiece is too high. What causes this?