**Commentary: Stainless steel is particularly widely used in industry and life, among which anti-corrosion is one of his good advantages. However, stainless steel will be subject to various contaminations during the machining process, which will increase the possibility of corrosion. At present, in order to further improve the corrosion resistance of stainless steel, we will basically use the process of pickling and passivation. Today, I will give you an in-depth explanation of the mechanism of action of stainless steel pickling passivation.
1.What do you think is stainless steel pickling passivation?
It is believed that stainless steel pickling passivation is a method to form a dense oxide film on the surface of stainless steel through an oxidizing solution to improve corrosion resistance. At present, the traditional process on the market is to use concentrated sulfuric acid or nitric acid for pickling, so that stainless steel and the chemical medium have a chemical reaction to form a dense film, but this film is relatively thin, the effect is not very good, at present, a CJX-302 stainless steel pickling passivation liquid, this passivation film is more dense and uniform oxide film.
2.What do you think is the principle of action of pickling passivation?
It is thought that the purpose of pickling blunt is to improve the corrosion resistance of stainless steel surfaces by forming an oxide film. The specific mechanism is as follows:
First of all, remove surface pollutants: pickling passivation can clean stainless steel oxide scale, welding slag, oil and other impurities, so that the surface becomes clean.
Secondly: a dense passivation film will be formed on the surface of the stainless steel after cleaning: the passivation film is silvery white and shiny, the effect is good, and the film has excellent corrosion resistance.
Again: stainless steel pickling passivation solution can enhance corrosion resistance: the oxide film has high stability and adhesion, which can effectively isolate the contact between stainless steel and the external environment, thereby enhancing the corrosion resistance of stainless steel.
3.What do you think are the application ranges of stainless steel pickling passivation?
According to practical experience, pickling passivation is widely used in stainless steel manufacturing, electronics, chemical industry and other fields. Specific applications include: Surface treatment of stainless steel products: The appearance quality and corrosion resistance of stainless steel products can be improved through pickling passivation. Electronic component manufacturing: pickling passivation can remove oxides on the surface of electronic components and improve the conductivity of components. Chemical equipment: Pickling passivation can reduce the corrosion degree of chemical equipment and prolong the service life of the equipment.
Conclusion: Stainless steel pickling passivation solution is a simple surface cleaning method, which can improve the corrosion resistance of stainless steel through simple cleaning. It is widely used in stainless steel products, machining, electronics, chemical industry, aerospace and other fields.