Weathering plate atmospheric corrosion-resistant steel

Weathering plate is atmospheric corrosion-resistant steel. It is a low-alloy steel series between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel. It has the strength and toughness of high-quality steel. , forming, welding and cutting, abrasion, high temperature, fatigue resistance and other characteristics.

Weathering Steel Uses
1. High-performance weathering steel and refractory steel can reduce the maintenance cost of the steel structure, and provide a new solution for solving the fire and corrosion problems of exposed unprotected steel structures, such as high-voltage electrical towers.
2. The production and installation process of refractory weathering steel is basically the same as that of conventional steel, and the design method is also the same as that of ordinary steel structure, but more test verification is required.
3. High-strength weathering steel has been popularized and applied in bridge engineering, and it is necessary to study the design theory and method.
4. Refractory weathering steel can also be used in floor decks.

After adding phosphorus, copper, chromium, nickel and other trace elements to the weathering steel, a dense and highly adhesive protective film is formed on the surface of the steel, which prevents the inward diffusion and development of rust, and protects the substrate under the rust layer to slow down its corrosion rate. . The amorphous spinel oxide layer with a thickness of about 50 μm to 100 μm formed between the rust layer and the substrate is dense and has good adhesion to the substrate metal. Due to the existence of this dense oxide film, it prevents oxygen and oxygen in the atmosphere. The infiltration of water into the steel matrix slows down the deep development of corrosion into the steel material and greatly improves the atmospheric corrosion resistance of the steel material.

Weathering steel is a steel system that can be used in thinning, exposed use or simplified coating, so as to prolong the corrosion resistance of products, save labor and reduce consumption, and upgrade them. Continuously developed and innovative steel systems.