Stainless steel plate is actually a product that is not easy to produce corrosion, unless it is some serious situation in fact, any product is impossible to do 304 Stainless Steel Pipe will not be corroded, if our stainless steel plate is corroded, it may affect its normal use, so in order to avoid the occurrence of this situation or need to do some precautions, below we first to understand the stainless steel plate by the corrosion of the factors what are the factors?
1. Electrochemical corrosion
Stainless steel plates due to contact with carbon steel caused by scratches, and then with the corrosive medium to form a primary battery, 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 easy to produce 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. The unclean pickling passivation cleaning leads to the chemical corrosion of the remaining pickling passivation residue and the plate, and then the electrochemical corrosion with the plate.
2. Chemical corrosion
Under certain conditions, many oils, dust or acids, alkalis, salts, etc. attached to the surface of stainless steel plates will be converted into corrosive media, and some components of the plate will undergo chemical reactions, resulting in chemical corrosion and rust. The cleaning pickling passivation Stainless Steel Seamless Pipe 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, 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.

The use of stainless steel pipe is now more and Stainless Steel Industrial Pipe more extensive, because of its good corrosion resistance in the construction of the project has played a vital role, in the production process we need to carry out solid solution treatment of stainless steel pipe, the main purpose is to obtain a certain martensitic so that the hardness of the product increases, let's take a look at the solution treatment of stainless steel pipes:
1. The intermediate aging method is reheated to (760±15) °C after the solid solution treatment, and the insulation is 90min due to the precipitation of Cr23C6 carbide from the austenite, which reduces the carbon and alloying element content in the austenite 904L stainless steel tube, so that the Ms point is raised to 70 °C and then cooled to room temperature to obtain martensite + α ferrite + residual austenite tissue, and the residual austenite is decomposed at the subsequent 510 °C.
2. High temperature adjustment and cryogenic treatment method after solid solution first heated to 950 °C insulation for 90min, due to the increase of Ms point, cooling to room temperature can obtain a small amount of martensitic; After that, a certain amount of martensitics can be obtained by cold treatment at -70 °C for 8h.
3. After the solid solution treatment of the cold deformation method, the cold deformation at room temperature, the number of martensitic formation of the 904L seamless tube during the cold deformation is related to the amount of deformation and the composition of the 904L stainless steel tube.