How Does The Tinning Process Develop?

In the early days of tin plating, hot dipping was often used. This production method required more energy, not only was it difficult to obtain a uniform and smooth coating, but also easily caused a waste of tin. People successively studied alkaline tin plating and neutral plating. Tin and acid tin plating are used stably in production practice. Alkaline tin plating solutions based on sodium stannate usually use sodium hydroxide and potassium hydroxide as complexing agents for electroplating. Since the 1940s, it has almost replaced all the older tin plating processes; with additives In-depth research and development, especially the widespread use of decorative crystal grain tin plating, acidic stannous sulfate tin plating has been greatly developed. Adding antioxidants and other additives to simple sulfuric acid and stannous sulfate solutions can obtain good quality matt or bright coatings. Although the fluoroborate tin plating process has advantages, it is no longer recommended for environmental protection reasons. In addition, in order to obtain a well-bonded tin plating layer on the lead-based or zinc-based, the neutral tin plating electrolyte is also properly used and developed.