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How long does stainless steel wedge wire screen panels last

Stainless steel wedge wire screen panels have the ability to resist atmospheric oxidation, namely rust, and also has the ability to corrode acid, alkali and salt, namely corrosion resistance. However, the degree of corrosion resistance varies with the chemical composition of the steel itself, the state of addition, the service conditions and the type of environmental medium.

For example, 304 stainless steel sieve plate has excellent antirust performance in dry and clean environment, but it will rust soon and 316 stainless steel sieve plate has good performance in sea fog containing a lot of salt when it is moved to coastal areas. Therefore, not any kind of stainless steel can resist corrosion and rust in any environment.Stainless steel wedged wire sieve plate is a very thin, solid and stable chromium rich oxide film (protective film) formed on the surface to prevent oxygen atoms from continuing to penetrate and oxidize, so as to obtain the ability of corrosion resistance. For some reason, the film is constantly damaged, the oxygen atom in the air or liquid will continue to penetrate or the iron atom in the metal will continue to separate, forming loose iron oxide, and the metal surface will continue to rust.

 

This type of surface film is destroyed in many forms, the following are common in daily life:

1. The stainless steel surface contains dust or other metal particles attached to other metal elements. In humid air, the condensation water between the attached material and stainless steel connects the two to form a micro cell, which leads to an electrochemical reaction. The protective film is destroyed, which is called electrochemical corrosion.

2. Organic juice (such as melon, noodle soup, glutinous rice, etc.) is attached to the stainless steel surface. In the case of water and oxygen, it forms organic acid, which corrodes the metal surface for a long time.

3. Acid, alkali and salt substances (such as alkali water and stone water splashing on the wall) attached to the surface of stainless steel cause local corrosion.

4. In the polluted air (such as the atmosphere containing large amount of sulfide, carbon oxide and nitrogen oxide), under the condition of condensed water, sulfuric acid, nitric acid and acetic acid liquid point are formed, causing chemical corrosion.

 

All of these will lead to corrosion of the protective film on the surface of stainless steel, which will lead to rust. Therefore, in order to ensure that the metal surface is bright and does not rust, we need to pay attention to the following points

1. The decorative stainless steel surface must be cleaned and scrubbed frequently to remove the deposits and eliminate the external factors that lead to the modification.

2. 316 stainless steel sieve plate shall be used to resist seawater corrosion.

3. The chemical composition of some stainless steel sieve plates on the market can not meet the corresponding standards, and can not meet the requirements of 304 materials.

Therefore, it will also cause rust, which requires users to carefully select products from reputable manufacturers. Hebei UBO has complete product specifications, special specifications can also be customized. The company adheres to the business philosophy of "customer first, forge ahead" and the principle of "customer first" to provide customers with high-quality services. Welcome new and old customers to visit us!

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