Tinplate consists of a steel plate coated with a thin layer of tin. Prior to the advent of cheap milling steel, the lining metal was iron. Although the use of tinplate is more extensive, its main use now is to make tin cans.
Tinplate is made by rolling steel or former iron in a rolling mill, removing any scale by pickling in acid, and then coating it with a thin layer of tin. Boards were once produced individually or in groups in a factory called a packaging machine. In the late 1920’s, packaging plants began to be replaced by strip mills, which in turn produced a large number of products more economically.
In the past, tinplate was used in cheap pots, pans, and other spinach. This hollow egg is also called tinplate, and the person who made it is a tinplate worker.
Tinplate has been replaced by galvanized containers for many purposes, but because zinc is toxic, it cannot be used for cooking [citation required]. The zinc layer protects iron from sacrifice protection (zinc is oxidized instead of iron), and tin can protect iron only if the tin surface remains unbroken.
Tinplate as an engineering material
Tinplate can be made in a variety of grades, each of which exhibits slightly different properties, so that the grade can be tailored to a particular end-use. This review describes the characteristics and properties of modern tinplate and shows how these can be exploited in particular end-uses.
Anti-corrosion Mechanism on Tinplate
The tinplate, used in the packaging sector and formed from a metal substrate, comprises a steel base which has undergone a surface treatment to produce a thin layer of FeSn2, a tin layer and an oxide tin layer. Currently, packaging using surface treatment is based on the use of chromates because these metals provide an excellent corrosion resistance. Nontoxic alternatives to pre-treatments have been developed in recent years to replace the chromate process. The aim of this work is to analyze the performance of a new hybrid organic-inorganic film obtained from sol-gel consisting of the alkoxide precursors 3-(Trimethoxysilylpropyl) methacrylate (TMSM) and tetraethoxysilane (TEOS) with the addition of cerium nitrate with the scanning vibrating electrode technique (SVET), and electrochemical and morphological characterizations. Moreover, the evolution of the corrosion of the substrate was evaluated to propose a mechanism of corrosion. The results showed a galvanic coupling between the Sn/SnO2 coat (cathode) and the defects exposed at the ferrous base (anode). The organic-inorganic hybrid film containing a cathodic corrosion inhibitor was able to retard the corrosion of the tinplate.