Sodium metabisulfite (SMBS) is a kind of important chemical raw material widely used in the electroplating industry. Qingdao Tianya Chemical Co., Ltd is a Chinese sodium metabisulfite manufacturer, our sodium metabisulfite has the characteristics of reducibility, complexation, and acidity, which can effectively remove the oxide film on the metal surface, promote the adhesion and corrosion resistance of the electroplating layer.
During the electroplating process, the main functions of sodium metabisulfite are as follows:
Removing oxide film: The metal surface usually has a layer of oxide film, which hinders the contact between the metal and the electroplating solution. Sodium metabisulfite has strong reducibility, which can reduce the oxide film on the metal surface into a metallic substance, thereby removing the oxide film.
Promoting adhesion: Sodium metabisulfite can form complexes with metal ions, which can promote the adhesion between the electroplating layer and the metal surface, thereby improving the quality and corrosion resistance of the electroplating.
Adjusting pH value: Sodium metabisulfite can also play a role in adjusting pH value in electroplating solution. It can react with acid to generate sodium sulfate and water, thereby maintaining the acid-base balance of the electroplating solution.