The use of stainless steel has become more widespread with the development of the economy. People are closely related to stainless steel in their daily lives. However, many people don't know much about the performance of stainless steel, and even fewer know about the maintenance of stainless steel. Many people think that stainless steel never rusts. In fact, stainless steel has good corrosion resistance because of the formation of a pure film on the surface. In nature, it exists in the form of a more stable oxide. In other words, although the degree of oxidation of stainless steel is different depending on the conditions of use, it is eventually oxidized. This phenomenon is usually called corrosion. All metal surfaces exposed to the corrosive environment are electrochemically reacted or chemically reacted, and are uniformly corroded. The weak corrosion resistance of the stainless steel surface purification film will form a pitting reaction due to the self-excited reaction, resulting in small holes. Oxygen ions are close to form a strong corrosive solution, which accelerates the rate of corrosion reaction. There is also intergranular corrosion and cracking inside the stainless steel, all of which have a destructive effect on the purification film on the surface of the stainless steel.　　 Therefore, the stainless steel surface must be regularly cleaned and maintained to maintain its gorgeous surface and extend its service life. When cleaning the stainless steel surface, be careful not to scratch the surface. Avoid using bleaching ingredients and abrasive detergents, steel wire balls, abrasive tools, etc. To remove the detergent, rinse the surface with clean water after washing.　　 The surface of stainless steel with dust and easy to remove dirt can be washed with soap and weak detergent, and the binder component, use alcohol or organic solvents (ether, benzene) to scrub.　　 The grease, oil and lubricating oil on the stainless steel surface are contaminated. After wiping it with a soft cloth, wash it with a neutral detergent or ammonia solution or a special detergent. There are bleaching agents and various acids attached to the surface of stainless steel. Rinse immediately with water, then soak with ammonia solution or neutral carbonated soda solution, and wash with neutral detergent or warm water.　　 The rainbow pattern on the surface of stainless steel is caused by excessive use of detergent or oil. It can be washed away with mild detergent in warm water. Rust caused by dirt on the surface of stainless steel can be washed with 10% nitric acid or abrasive detergent, or with special detergents.

As long as we use the correct maintenance methods, we can extend the service life of stainless steel and maintain its clean, bright and gorgeous surface.