What are the corrosion factors of stainless steel plate

Stainless steel plate is actually a product that is not easy to produce corrosion. In fact, no product can be protected from corrosion unless it is in some serious cases. If our stainless steel plate is corroded, it may affect its normal use. Therefore, we still need to take some preventive measures to avoid this situation. Let's first understand the factors that cause the corrosion of stainless steel plate?

1） Electrochemical corrosion

The scratch caused by the contact between stainless steel plate and carbon steel parts, and then form a galvanic cell with corrosive medium, which will produce electrochemical corrosion. If the pickling and passivation effect is not good, the passivation film on the surface of the plate will also be uneven or too thin, which is also easy to produce electrochemical corrosion, slag cutting, splash and other rust prone substances attached to the plate, and then form a galvanic cell with the corrosive medium, resulting in electrochemical corrosion. The unclean cleaning of pickling and passivation leads to the chemical corrosion products between the remaining pickling and passivation residue and the plate, and then form electrochemical corrosion with the plate.

2） Chemical corrosion

Under certain conditions, many oil, dust, acid, alkali and salt attached to the surface of stainless steel plate will be transformed into corrosive medium and react with some components in the plate, resulting in chemical corrosion and rust. Cleaning, pickling and passivation are not clean enough, resulting in residual liquid retention, which directly corrodes the plate. The surface of the plate is scratched, resulting in the destruction of the passive film. Therefore, the protection ability of the plate is reduced, and it is easy to react with the chemical medium, resulting in chemical corrosion and rust.