The tinplate packaging products we see need to be tinned? In fact, tinplate is the iron sheet wrapped in tin. Because of the stability of tin, tinplate can be used in all kinds of packaging, and because of the metal texture, it is fashionable, safe and convenient. , So more and more people choose tinplate packaging. Tin has stable chemical properties and is not easily corroded, so tinplate can be tinned. Only in this way can it be ensured that some products in the package will not be affected and can be stored well.
But tin is afraid of cold and heat, and its melting point is very low, and it quickly turns into a liquid in the fire. Therefore, tinplate packaging generally cannot be burned at high temperature, because high-temperature burning will melt the tin coat on the outside, and the iron sheet inside will have no protective effect. Therefore, the tinplate box that has been burned will quickly rust and corrode. Tin is afraid of cold and starts to lose its ductility at around 13 degrees. When the temperature drops again, reaching about minus 30 degrees, tin will turn into powder. If you heard it right, it will turn into powder. Moreover, this property of tin is easily contagious. Good tin will turn into powder when it encounters powdered tin. This phenomenon is called "tin epidemic". In addition, the tin has a low hardness and can easily break. If the knife cuts through the surface of the tinplate, the patch inside will slowly be eroded away. Therefore, protecting the tin can well protect the tinplate from being eroded. This is why tinplate needs key tin. The tin plating solution used for tinplate tinplate now, the quality of the tin plating solution determines the degree of protection of the tinplate.