What is the principle of weathering steel?
After microelements such as phosphorus, copper, chromium, and nickel are added to the steel, a dense and highly adherent protective film is formed on the surface of the steel, which hinders the spread and development of corrosion and protects the matrix underneath the rust layer to slow down its corrosion rate. Weekly work.
The approximately 50 μm ~ 100 μm thick amorphous spinel-type oxide layer formed between the rust layer and the substrate is dense and has good adhesion to the base metal. Due to the existence of this dense oxide film, it prevents oxygen and Water penetrates into the steel matrix, slowing down the development of corrosion into the steel material, and greatly improving the atmospheric corrosion resistance of the steel material.
Weathering steel is a steel system that can be used thinner, exposed or simplified in painting, thereby resisting corrosion and prolonging the life of the product, saving labor and consumption, and upgrading. It is also a steel system that can be integrated into new mechanisms, new technologies and new processes of modern metallurgy to make it more durable. A steel system of continuous development and innovation.
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