The tinplate is outside the iron and is coated with a “tin coat”. Therefore, the tinplate is also called tinplate. Everyone knows that iron is easy to rust, especially in the dark and humid air, it is more likely to rust, but tin is not easy to rust. There are also many things made of tin in life, similar to toothpaste shell, candle holder, etc. It is not easy to break a few years. After wearing a “tin coat” on the iron sheet, it will insulate the iron from the gas, thus preventing the iron from rusting.Tinplate supplier
In China, tinplate can be manufactured very early. But at first it was hand-operated, the quality was not high, and the output was very limited. Now, it has been able to produce on a large scale with machines. When making tinplate, first wash the thin iron with hydrochloric acid and sulfuric acid. Wash off the surface rust and oil. Until the surface is very bright and clean, rinse with water.
Then, it is sent to a tin-plating machine to pass the iron sheet through the molten tin liquid and uniformly plate a layer of tin.
Tin is not expensive. Moreover, a tinplate can not consume much tin. One ton of tin can cover 40,000 square meters of iron. Therefore, the tinplate is very cheap.
The biggest customer of tinplate is the canning industry. The can was originally invented more than a hundred years ago by a young hawker in France, Abilu. At that time, France was the unsuccessful commander of Napoleon. He was arrogant in Europe. He invaded other countries everywhere. The food of the army was very stinky in the summer, and the supply often encountered difficulties. Napoleon then sought a way to preserve food for a long time. Abilu is a young man with a deep research spirit. After many experiments, he invented canned food. The original can. It is made of glass, and the food is heated and sealed in a glass bottle. It can last for a long time. However, the glass bottle was too easy to be broken, and people later switched to tinplate. Until now, cans are still made of tinplate.
Pure tin does not dissolve in the canned juice. It does not harm people’s health.
However, when using tinplate, you have to be careful. Don’t break the “tin coat” outside. If it breaks, it loses its protection. The iron will soon rot: not long after. The whole tinplate will be full of reddish brown rust.