Stainless steel plate is actually a product that is not easy to corrode, unless it is some serious cases, in fact, any product cannot be corroded, if our stainless steel plate is corroded it may affect its normal use. , so to avoid this situation or need to do some preventive measures, let's first understand what are the corrosion factors of stainless steel plate.
1) Electrochemical corrosion
scratch caused by contact between stainless steel plate and carbon steel parts, and then the formation of galvanic cells with the corrosive medium, which will produce electrochemical corrosion. If the passivation effect of pickling is not good, it will also cause the passivation film on the surface of the plate to be uneven or too thin, which is also easy to produce electrochemical corrosion, slag, spatter and other substances prone to oxidation. adhered to the plate, and then form a galvanic cell with the corrosive medium, resulting in electrochemical corrosion. Pickling passivation cleaning is not clean, resulting in the remaining pickling passivation residues and chemical corrosion products of plates, and then with the plate to form electrochemical corrosion.
2) Chemical corrosion
Under certain conditions, many oils, dust or acids, alkalis, salt, etc. Adhered to the surface of the stainless steel plate will become corrosive medium, and some components of the plate will undergo chemical reactions, resulting in chemical corrosion and rust. The passivation of cleaning stripping is 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 passivation film, so that the protective ability of the plate is reduced and it is easy to react with the chemical medium, and chemical corrosion and rust occur.