Commonly used methods to prevent iron cans from rusting

Commonly used methods to prevent iron cans from rusting are

1. Iron cans are made of iron. We all know that iron is easy to rust. Rust is a chemical reaction. When iron products are exposed to the air for a long time, they will oxidize with oxygen to form rust.

2. In order to prevent the iron can from rusting, the iron box manufacturers often use galvanizing, painting and other processes on the iron box to prevent oxidation and corrosion, which can protect the iron box from being corroded by acid and alkali, and protect the contents of the iron box from being damaged. Pollution, but when the iron box is scratched on the surface or the paint is scraped off, the scraped part is prone to rust. We need to know that the wet environment is the easiest to rust the tin can, and we should look for a cool and dry place when placing the tin box. Iron is chemically unstable and easily reacts with oxygen in the air or water. When we use the iron box, we try not to put some sharp objects in it, so as not to damage the paint on the surface of the iron box. Do not use excessive force when moving the iron box, so as not to fall on the ground and remove the paint on the surface of the iron box.

3. Covering the surface of iron cans with a protective layer is a common and important method to prevent iron products from rusting. According to the composition of the protective layer, it can be divided into

The following are:

a. Coat the surface of iron products with mineral oil, paint or fired enamel, spray plastic, etc. For example: canned beef, canned fish, etc. are often coated with paint; machines are often coated with mineral

Physical oil, etc.

b. Use electroplating, hot dipping and other methods to coat the surface of the iron can with a layer of metal that is not easy to rust, such as zinc, tin, chromium, nickel, etc. These metal surfaces are all

It can form a dense oxide film to prevent iron products from rusting in contact with water, air and other substances.

c. Use chemical methods to form a dense and stable oxide film on the surface of iron products to prevent iron products from rusting.

4. Keeping the surface of iron products clean and dry is also a good way to prevent iron products from rusting.