Will all the stainless steel products never rust?

When the surface of stainless steel appears brown rust spots, the average person will think: "The material is not a problem, stainless steel will not rust, rust is not stainless steel." In fact, this is a lack of understanding of stainless steel a one-sided cognition. Stainless steel is not completely free from rust, but under the same conditions, corrosion resistance is stronger than other materials. At present, there are still quite a few people think that as long as 304 stainless steel will not rust. In fact, whether 304 or 201, it will rust under certain conditions. The corrosion resistance of stainless steel will change with the conditions of use and environmental media! (For example, in a dry and clean atmosphere, 304 stainless steel is not easy to rust, but if it is in an atmosphere containing a lot of salt, such as coastal areas, even 304 stainless steel will rust quickly. Stainless steel is actually based on an extremely thin but solid and fine stable chromium-rich oxide film on the surface to prevent the continued infiltration of oxygen atoms and continue to oxidize to obtain corrosion resistance. Once the environment or other conditions destroy the oxide film, stainless steel will rust! Once for some reason, this film is constantly destroyed, the oxygen atoms in the air or liquid will continue to penetrate or the iron atoms in the metal will continue to be resolved out, forming loose iron oxide, and the metal surface will be constantly corroded.

What are the common problems that lead to the destruction of stainless steel protective film?

1. The surface of stainless steel contains dust or alien metal particles containing other metal elements, in the humid air, the condensate between the attachment and stainless steel, the two are connected into a microbattery, causing an electrochemical reaction, the protective film is damaged, called electrochemical corrosion.
2. The surface of stainless steel adheres to organic juice (such as melons and vegetables, noodle soup, sputum, etc.), which constitutes organic acid in the case of water oxygen, and the organic acid corrods the metal surface for a long time.
3. Stainless steel surface adhesion containing acid, alkali, salt substances (such as alkaline water, lime water splash on the decoration wall), causing local corrosion.
4. In polluted air (such as the atmosphere containing a large number of sulfides, carbon oxide, nitrogen oxide), in case of condensation, sulfuric acid, nitric acid, acetic acid liquid point is formed, causing chemical corrosion. How to ensure that stainless steel is bright and does not rust?
The above conditions can cause the damage of the stainless steel surface protective film and lead to corrosion. Therefore, in order to ensure that the metal surface is permanently bright and not corroded, we recommend:
1. The decorative stainless steel surface must be cleaned and scrubbed frequently to remove attachments and eliminate external factors that cause modification.
2. It is best to use 316 stainless steel in seaside areas, and 316 material has stronger resistance to seawater corrosion.
3. The chemical composition of some stainless steel pipes on the market cannot meet the corresponding national standards, and cannot reach the 304 material requirements, which will also cause rust, so the user should carefully choose the products of reputable manufacturers.

Stainless steel rust, how to deal with?

1. Prepare tools:
   Cleaning cloth, cotton cloth, thick labor protection cotton gloves and disposable gloves toothbrush, nano-sponge wipe, rust removal paste, super bright shining water wax
   Second, when the surface treatment of stainless steel is matte, the treatment method after rust
   Third, when the surface of stainless steel is treated as mirror light, the rust treatment method is used to treat the slight rust spot of the mirror
   1, rust removal paste is slightly corrosive, you must wear good gloves (disposable gloves + cotton gloves).
   2, clean cloth wipe along the lines of the steel pipe to avoid the phenomenon of inconsistent lines after wiping.