What are the factors that cause corrosion of stainless steel plates?


Release time:

2022-09-16

Stainless steel plate is actually a product that is not prone to corrosion. Unless it is in some serious cases, it is impossible for any product to be corrosion-free. If our stainless steel plate is corroded, it may affect its normal performance.

Stainless steel plate is actually a product that is not prone to corrosion. Unless it is in some serious cases, it is impossible for any product to be corrosion-free. If our stainless steel plate is corroded, it may affect its normal performance. Therefore, we still need to take some preventive measures in order to avoid this situation. Let’s first understand what are the factors that cause stainless steel plates to corrode?
(1) Electrochemical corrosion
Stainless steel plates are scratched due to contact with carbon steel parts, and then form a galvanic cell with the corrosive medium, which will produce electrochemical corrosion. If the pickling and passivation effect is not good, the passivation film on the surface of the plate will be uneven or too thin, which will easily cause electrochemical corrosion, cutting slag, splash and other rust-prone substances to adhere to the plate, and then form with corrosive media. galvanic battery, thus producing electrochemical corrosion. If the pickling and passivation is not cleaned thoroughly, the remaining pickling and passivation residue will produce chemical corrosion products with the plate, and then form electrochemical corrosion with the plate.
(2) Chemical corrosion
Under certain conditions, a lot of oil, dust, acid, alkali, salt, etc. attached to the surface of the stainless steel plate will be converted into corrosive media and chemically react with some components in the plate, resulting in chemical corrosion and rust. Cleaning, pickling and passivation are not clean enough, resulting in residual liquid remaining, which directly corrodes the plate. The surface of the plate is scratched, resulting in the destruction of the passivation film, thus reducing the protective ability of the plate and easily reacting with chemical media, resulting in chemical corrosion and rust.

Latest News

Solid solution treatment of stainless steel pipes

The intermediate aging method is heated to (760±15)℃ after solid solution treatment and kept for 90 minutes. Because Cr23C6 carbide precipitates from the austenite, the carbon and alloy element content in the austenitic 904L stainless steel pipe is reduced. , raise the Ms point to 70°C and then cool to room temperature to obtain the martensite + α ferrite + retained austenite structure. The residual austenite will be decomposed after subsequent aging at 510°C.

2022-09-16

Preparation work before welding stainless steel pipe

Stainless steel pipe is a type of pipe that is commonly used. Generally, in order to ensure the quality of the product, we need to perform welding operations before use. It is very important to master the correct operation method, which is also beneficial to our later use.

2022-09-16

What are the factors that cause corrosion of stainless steel plates?

Stainless steel plate is actually a product that is not prone to corrosion. Unless it is in some serious cases, it is impossible for any product to be corrosion-free. If our stainless steel plate is corroded, it may affect its normal performance.

2022-09-16

Applications of carbon steel coils

Carbon steel coils have high strength and toughness and are easy to process and weld, so they are widely used in construction, manufacturing, transportation, chemical industry and other fields. Specifically, carbon steel coils can be used in the following areas:

2022-09-16

What are the classifications of carbon steel pipes?

In addition to general steel pipes, low- and medium-pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, cold-rolled (rolled) carbon steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, and stainless steel pipes. Rusty thin-walled steel pipes, special-shaped steel pipes. The outer diameter of hot-rolled seamless steel pipes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel pipes can be up to 6mm, and the wall thickness can be up to 0.25mm. The outer diameter of thin-walled pipes can be up to 5mm, and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.

2022-09-16

Product features of color coated rolls

It has good performance-price ratio, durable performance and extremely competitive price. Therefore, whether it is architectural designers, engineers or manufacturers, galvanized steel sheets have been widely used in industrial buildings, steel structures and civil facilities, such as garage doors, gutters and roofs.

2022-09-16