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:
Inadequate bonding of nickel-phosphorus plating can be due to a variety of reasons, and solving this problem requires diagnosing the specific cause and taking appropriate measures. Below are a few common reasons that may lead to insufficient bonding of nickel-phosphorus plating and strategies to resolve them:
Electro-galvanizing is a commonly used anti-corrosion treatment process that protects the substrate from corrosion by depositing a zinc layer uniformly on the metal surface through electrolysis. In order to further improve the corrosion resistance and appearance quality of the galvanized layer, a passivation treatment is usually applied after electro-galvanizing. An important category of passivation is the colorful galvanizing passivate, which provides additional protection to the coating while giving the metal surface a variety of colors that are aesthetically pleasing and practical.
Oil removal is an indispensable step in the plating process and is the key to ensuring good adhesion and surface finish of the electroplating. This article will elaborate on the importance of electroplating oil removal, and introduce the basic concepts of electroplating pretreatment.
