What is the reason for the rusting of ordinary carbon steel?

Weathering steel is different from stainless steel, it will also be corroded by the atmosphere to produce corrosion, but the corrosion of weathering steel is a layer of dense oxide film, firmly attached to the steel surface to prevent further oxidation of the atmosphere and the base, so weathering steel has been widely used. But many of the materials we use are ordinary carbon steel, how to prevent their corrosion?

1. Medium causing product corrosion: wet air, hand sweat or dirt contacted by the product, water, acid, alkali, salt and chemical gas remaining on the metal surface, etc. may cause metal corrosion.

2. Corrosion resistance of metals: the metals easy to rust are pig iron, carbon steel and structural alloy steel, etc. Stainless steel, superalloy and titanium alloy will rust in special environment.

3. Parts easy to rust: the parts easy to contact, adhere to and accumulate corrosive substances are groove, groove, seam, hole, edge, joint surface, hand contact surface, parking surface, etc., or rough surface, new processing surface, sand blasting and polishing surface, etc., which are easy to rust.

4. Environment prone to corrosion: Generally speaking, pickling, heat treatment, electroplating, welding, painting, electrolysis and other processing workshops are more likely to cause corrosion than mechanical processing workshops, because these workshops have a large number of corrosive media.

To sum up, these are the causes of corrosion of ordinary carbon steel, which can be avoided in use after understanding these causes, so as to reduce the occurrence of steel corrosion. The stacking and packaging of steel is also a key link. If the steel is stacked in a humid area, the corrosion and loss of steel will be accelerated. If the corrosion of steel is to be effectively reduced, improving its corrosion resistance is the key.