Stainless steel color plate process and causes of corrosion

The whole process of color processing of stainless steel color plate includes two steps of color processing and dura mater processing. The coloring process is carried out in a bath of hot chromium sulfate solution. After the stainless steel color plate is soaked, a layer of oxide film will be formed on the surface. After hard coating treatment, stable compounds such as chromium trioxide and chromium hydroxide can be formed on the cathode. It not only fills the tiny pores in the oxide film, but also improves the wear resistance, corrosion resistance and heat resistance of the oxide film, so that the overall performance of the material has been greatly improved.

The surface of stainless steel color plate has stronger corrosion resistance and wear resistance than ordinary stainless steel color plate. Brushed stainless steel 304 price list can withstand more than 10 years of salt spray corrosion and more than 30 years of ultraviolet radiation without discoloration. The main body and the coloring layer are integrated to maintain the basic structure and basic performance of the original board, and can be processed by conventional forming and stretching. The color surface of the stainless steel color plate has the advantages of bright color, bright color, softness, elegance, and strong finish.

What is the cause of stainless steel color plate corrosion

1. There is dust or foreign matter containing other metal elements and metal particles on the surface of the stainless steel color plate. In humid air, condensation between the fittings and the stainless steel colored panels connects them into tiny batteries to generate electricity. The chemical reaction destroys the protective film, which is called galvanic corrosion.

2. The surface of the stainless steel color plate is pasted with organic juice. Organic acids are formed in the presence of water and oxygen, and they corrode metal surfaces over long periods of time.

3. The manufacturer of stainless steel plate and mirror plate said that acid, alkali, salt and other substances are attached to the surface of the stainless steel color plate, causing local corrosion.

4. In the polluted air containing a large amount of sulfur, carbon oxides and nitrogen oxides, when it is cooled and solidified, liquid points such as sulfuric acid, nitric acid, and acetic acid will be formed, causing chemical corrosion.