Stainless steel plate is actually a product of 304 that is not easy to corrode. Unless it is in some serious cases, it is impossible for any product to be made of 304 material so that it will not be corroded. If our stainless steel plate is corroded, it may become 304. The material affects its normal use, so we need to take some preventive measures in order to avoid this situation.

Electrochemical 304 corrosion

The 304 stainless steel sheet is scratched due to contact with carbon steel parts, and the 304 stainless steel sheet forms a primary battery with the corrosive medium, which will cause electrochemical corrosion of the 304 material. If the 304 pickling passivation effect is not good, the sheet will also be damaged. The surface passivation film is uneven or too thin, and the 304 material is also prone to electrochemical corrosion. The 304 material that is prone to rust such as splashes adheres to the plate, and then forms a primary battery with the corrosive medium 304, and the 304 material produces electrochemical corrosion. , The acid pickling 304 passivation cleaning is not clean, resulting in the chemical corrosion products of the remaining pickling passivation residue and the plate, and then the electrical 304 material is chemically corroded with the plate.

Chemical 304 material corrosion

Under certain conditions, the oil, dust or 304 acid, salt, etc. attached to the surface of the stainless steel sheet will be transformed into a medium that corrodes the 304 material, and chemically react with some components of the 304 material in the sheet, resulting in chemical corrosion and the resulting 304 material Rusting, cleaning, pickling and passivation is not clean enough, 304 material is not clean enough to cause residual liquid to remain, which directly corrodes the 304 material sheet, and the 304 surface of the sheet is scratched, which leads to the destruction of the passivation 304 material film, so the protection ability of the sheet is reduced by 304 It is easy to react with the 304 chemical medium, and the 304 material will rust due to chemical corrosion.