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What are the factors for corrosion of stainless steel plates?
Release time：
2023-05-16
Stainless steel plate is actually a kind of product that is not easy to corrode. Unless it is in some serious cases, it is actually impossible for any product to be free from corrosion. If our stainless steel plate is corroded, it may affect its normal use, so we still need to take some preventive measures in order to avoid this situation. Let's first understand the factors that cause stainless steel plate to be corroded. What are the factors?
Stainless steel plate is actually a kind of product that is not easy to corrode. Unless it is in some serious cases, it is actually impossible for any product to be free from corrosion. If our stainless steel plate is corroded, it may affect its normal use, so we still need to take some preventive measures in order to avoid this situation. Let's first understand the factors that cause stainless steel plate to be corroded. What are the factors?
1) Electrochemical corrosion
The scratches caused by the stainless steel sheet in contact with the carbon steel parts, and then the primary battery is formed with the corrosive medium, which will produce electrochemical corrosion.If the pickling passivation effect is not good, it will also make the passivation film on the surface of the plate uneven or too thin, which is also prone to electrochemical corrosion, slag cutting, splashing and other rust-prone substances attached to the plate, and then form a primary battery with the corrosive medium, resulting in electrochemical corrosion.Unclean pickling and passivation cleaning leads to chemical corrosion of the remaining pickling and passivation residues with the plate, and then electrochemical corrosion with the plate.
2) Chemical corrosion
Under certain conditions, the oil, dust, acid, alkali, salt, etc. attached to the surface of the stainless steel sheet will be converted into a corrosive medium, which will react chemically with some components in the sheet, resulting in chemical corrosion and rust.Cleaning, pickling, passivation is not clean enough to cause residual liquid to remain, which directly corrodes the plate.The surface of the plate is scratched, resulting in the destruction of the passivation film, which reduces the protective ability of the plate, and it is easy to react with chemical media, chemical corrosion and rust.
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