The surface of the stainless steel mesh

The surface of the stainless steel mesh is damaged in many forms, and the following are common in daily life: 1. Stainless steel has deposits of dust or other metal particles containing other metal elements on the surface. In humid air, The condensed water between the stainless steel and the two forms a micro battery, which triggers an electrochemical reaction and the protective film is damaged, which is called electrochemical corrosion. 

2. The organic matter juice adheres to the surface of stainless steel. In the presence of water and oxygen, it forms organic acids. For a long time, the organic acids will corrode the metal surface.

3. The surface of the stainless steel contains acids, alkalis, and salts (such as alkaline water and lime water splashing from the wall), which may cause local corrosion.

4. In contaminated air (such as an atmosphere containing a large amount of sulfide, carbon oxide, and nitrogen oxide), when it meets condensed water, it forms sulfuric acid, nitric acid, and acetic acid liquid points, causing chemical corrosion.

The above conditions can cause the damage of the stainless steel surface protective film to cause corrosion.