Prefabricated red rust panel landscape, please contact "JBL garden"

Prefabricated red rust panel landscape, please contact "JBL garden"

The reason why the weather-resistant steel plate has "weather-resistant" is that copper, phosphorus, chromium, molybdenum and other trace elements are added to alloys such as corrosion resistant steel to form a protective film to prevent continuous corrosion. The principle of electrochemical corrosion: under atmospheric corrosion conditions, the corrosion of steel is mainly electrochemical corrosion. First, corrosion is the formation of a water film on the surface of the steel. If the influence of sulfur dioxide and salt particles in the air is not considered, the atmospheric corrosion of steel is mainly based on the corrosion under the water film. In the initial stage of corrosion, gaseous oxygen is first dissolved in water and forms a galvanic cell with iron, resulting in electrochemical corrosion of steel. The rust-proof layer formed on the steel surface will change its volume and create stress at the interface between the rust-proof layer and the substrate. The stress increases with the increase of corrosion rate, and the subsequent corrosion rate also increases. The deformation of rust itself is poor, and cracks are easy to occur in the rust layer formed in the early stage of corrosion. The role of copper, phosphorus, chromium, molybdenum and other trace elements: If a small amount of copper, phosphorus, chromium, molybdenum and other elements are added to ordinary carbon steel, its corrosion resistance is 2-8 times that of ordinary copper carbon steel. Performance has also improved. The principle is simple. The respective oxides of copper and chromium can form an insulating layer to prevent the intrusion of water and acids. Phosphorus and molybdenum promote the formation of amorphous (amorphous) protective layers. The addition of these elements makes the anti-rust layer stable, fine and dense, which not only isolates the contact between the corrosive medium and the steel matrix, but also due to its extremely high impedance. This is a natural rust color, due to the strong corrosion resistance of the weather-resistant steel plate.

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