Stainless steel plate is actually a kind of product that is not easy to produce corrosion, except in some serious cases. In fact, it is impossible for any product not to be corroded, if our stainless steel plate is corroded, it may affect its normal use, so we need to do some preventive measures to avoid this situation. Here are two factors that can cause corrosion of stainless steel plates.
1. Electrochemical corrosion.
Stainless steel plate due to the scratch caused by contact with carbon steel parts, stainless steel plate after the formation of galvanic cells with corrosive medium, which will produce electrochemical corrosion, pickling passivation effect is not good, it will also make the passivation film on the surface of the plate is not uniform or too thin, so it is easy to produce electrochemical corrosion, splash and other easy rust material attached to the plate, after the formation of galvanic cells with corrosive medium, Resulting in electrochemical corrosion, pickling passivation cleaning is not clean, resulting in residual pickling passivation liquid chemical corrosion products with the plate, and then form electrochemical corrosion with the plate.
2. Chemical corrosion.
Under certain conditions, many oil, dust or acid, salt attached to the surface of stainless steel plate into corrosion medium, chemical reaction with some components of the plate, resulting in chemical corrosion and rust, cleaning pickling passivation is not clean enough 3 caused by residual liquid remaining, thereby directly corroding the plate, plate surface was scratched, resulting in passivation film destroyed, Therefore, the protection ability of the plate is reduced, easy to react with chemical medium, chemical corrosion and rust.
Post time: Feb-22-2023