Electrolytic tinplate is a product in which pure tin is plated on both sides of cold-rolled low-carbon thin steel plate. The production technology of electrolytic tinplate is complex, technical, long manufacturing process, high quality requirements and difficult to manufacture. It not only has the characteristics of high strength, good formability, excellent corrosion resistance, strong weldability, bright appearance, but also has good printing colorability. In addition, the tin-plated layer is non-toxic, so it is widely used in the food industry and non-food industries such as the production of various containers, stamping products, and packaging materials.
The production process of electrolytic tinplate includes the following main steps: First, the low-carbon steel is rolled into a steel plate of about 2mm thick, which is processed by pickling, cold rolling, electrolytic cleaning annealing, flattening, and trimming, and then cleaned, electroplated, soft melted, passivated, and oiled before being sheared into a tinplate plate product. During the electroplating process, pure tin is deposited on the cold-rolled plate. The soft melt process forms a very thin tin-iron alloy layer between the cold-rolled substrate and the pure tin layer. The cathode passivation treatment and oiling process form a passivation film and an oil film respectively.
What are the advantages and uses of electrolytic tinplate?
It has good corrosion resistance, non-toxicity, light weight, and easy processing and molding, so it has been widely used in food canning industry, electronic devices, chemical paint and other industries. It is plated with a very thin layer of metal tin on both sides, combining the hardness and strength of steel with the easy welding, corrosion resistance and bright appearance of tin, making the product both beautiful and practical.
