Stainless steel stamping parts processing plant, with good corrosion resistance, chemical resistance and heat resistance. If the stainless steel material is chemically reacted with acid, stainless steel can obtain very good corrosion resistance. Stainless steel is stainless acid-resistant steel, which has good corrosion resistance and can meet the requirements of different environments.
1. In water, water is the most basic salt, and stainless steel is stainless in water.
When Na2SiO2 is contained in water, Na2SiO2 will form an oxide film, which will make stainless steel not easy to rust. Soaking in water for a month can reduce the corrosion resistance of steel. Corrosion resistance can be obtained by using stainless steel in water or alkaline solutions if the water contains large amounts of chlorine. Chloride or hydrofluoric acid is usually produced in water if it contains hydrogen ions in the chloride.
2. In the environment of high humidity, stainless steel does not rust, as in the case of humidity, there is a simple problem.
The degree to which stainless steel is corroded depends on its actual material, such as humidity and temperature in the environment. In these environments, we need to use a certain amount of stainless steel to deal with corrosion. If the stainless steel we use does not rust, and we rarely notice this problem, we will need to take steps to prevent the development of corrosion. When the humidity exceeds a certain level, corrosion cracks will occur in stainless steel.
3. When the water contains perchloric acid, the water will form corrosion.
Stainless acid-resistant steel has strong corrosion resistance, but obvious oxidation will occur in places with very high temperature-nickel has strong resistance in this respect, and obvious oxidation will not occur under normal conditions. Because there is a layer of tin on the surface of stainless steel, it can prevent the formation of perchloric acid to neutralize corrosion. In addition, it can promote the formation of tin-iron when perchloric compounds react with other acids. If the perchloric acid corrosion is excessive, the stainless steel material may be oxidized and failed. When high chlorine compounds are formed, they will destroy the stable structure and overall performance of stainless steel materials.
4. In order to make the solution have better chemical stability, it is necessary to add a certain amount of sulfate or oxidant to the aqueous solution.
If sulfuric acid has a low solubility in aqueous solution, it will not affect stainless steel. But when the water contains a lot of ions (such as chloride ions and fluoride ions), it will cause this phenomenon to happen. At this point, chloride can be added to alter this unstable reaction. Chloride can chemically react with stainless steel to dissolve in water, and can also be directly dissolved in water in hot water. Sulfuric acid can also react with chemical reactions such as hydrofluoric acid.
5. When the concentration of chloride ions is too high, it will damage the surface of the stainless steel plate and make it oxidize.
Because of this situation, a large amount of salt spray will be generated, so it is corrosive. It can also weaken or even damage stainless steel surfaces. In order to avoid this from happening, the chloride ion must be controlled below 1 ppm.