With the development of economy, the use of stainless steel filter becomes more and more widespread. People are closely related to stainless steel in daily life. However, many people do not know much about the performance of stainless steel, and even less about the maintenance of stainless steel. Many people think that stainless steel is never rusty and that stainless steel has good corrosion resistance. The reason is that a passive film is formed on the surface, which exists in nature in a more stable form of oxide. That is to say, stainless steel is oxidized eventually, although the degree of oxidation varies according to the use conditions. This phenomenon is usually called corrosion.

If there is dust on the surface of stainless steel and dirt is easily removed, it can be washed with soap, weak detergent or warm water. The label and film on the surface of stainless steel are washed with warm water and weak detergent. The binder composition is scrubbed with alcohol or organic solvent (ether, benzene). The grease, oil and lubricating oil on the surface of stainless steel are contaminated and cleaned with soft cloth, then neutral detergent or ammonia solution or special detergent.

The surface of stainless steel filter has bleaching agent and various acids attached. Rinse with water immediately, then soak with ammonia solution or neutral soda carbonate solution, and wash with neutral detergent or warm water. The surface of stainless steel screen has rainbow pattern, which is caused by excessive use of detergent or oil. When washing, it can be washed with warm water neutral detergent. The rust caused by stainless steel surface dirt can be washed with 10% nitric acid or abrasive detergent, or with special detergent. As long as we use the correct maintenance method, we can prolong the service life of stainless steel and maintain its clean, bright and gorgeous style.

The corrosion resistance of passive film on stainless steel surface is weak, pitting reaction is formed due to self-excitation reaction, forming small holes, and chloride ion is close to each other, forming a strong corrosive solution to accelerate the corrosion reaction. There are also intergranular corrosion cracking in stainless steel, all of which destroy the passive film on the surface of stainless steel. Therefore, the surface of stainless steel must be regularly cleaned and maintained to maintain its gorgeous surface and extend its service life. When cleaning stainless steel surface, attention must be paid to avoiding surface scratches, avoiding the use of bleaching ingredients and abrasive detergent, steel ball, abrasive tools, etc. In order to remove the detergent, wash the surface with clean water at the end of washing.