In the zinc electroplating process, many electroplating plants feedback in the production process of the coating surface white spots, there are many reasons for such failures, only from the source, in order to solve the problem. In this article, we will take a look at the relevant reasons.
If the electroless nickel plating solution is unstable, it often causes problems such as poor coating quality and decreased corrosion resistance, so we need to strictly control the stability of the plating solution, then what are the reasons for the poor stability of the plating solution?
Electroless nickel plating (no electrolytic nickel plating) usually has very good corrosion resistance, which includes resistance to salt spray (or brine spray). Salt spray is an environmental test that simulates corrosion in the ocean and other environments with high salt content. It is often used to assess the protection of metal coatings and coatings against corrosion.
Trivalent chromium blue white zinc passivation process is a surface treatment process used to prevent metal corrosion, often used to treat iron, steel, copper and their alloys and other metal surfaces. The purpose of chromium passivation treatment is to form a dense conversion film on the surface of the metal, which can improve the corrosion resistance of the metal, improve the adhesion of the coating, enhance the wear resistance of the metal, and also provide a beautiful appearance. So what are the common faults of the trivalent blue and white passivation process?
In the production of copper pyrophosphate plating process, if the pH value is high, it often affects the quality of the coating. Therefore, we need to know what are the causes of high pH value.
Acid bright copper plating process is a special copper plating method characterized by the addition of brightening agents to the plating solution in order to achieve the effect of a bright, smooth copper layer on the metal surface. The main application areas of acid bright copper plating process include the following:
