After adding phosphorus, copper, chromium, nickel and other trace elements 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 rust and protects the substrate under the rust layer to slow down its corrosion rate. The amorphous spinel-type oxide layer with a thickness of about 50μm-100μm 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 in the atmosphere. The penetration of water into the steel matrix slows down the deep development of rust to steel materials and greatly improves the atmospheric corrosion resistance of steel materials. Weather resistant steel plate is a steel series that can be used in thinner, exposed, or simplified coating, so as to extend the life of products, save labor and reduce consumption, and upgrade. It is also a steel series that can be integrated into modern metallurgical new mechanisms, new technologies, and new processes.
Weather resistant steel plates manufacturing process
Weather resistant steel plates generally adopts the process route of refined material entering the furnace-smelting, controlled rolling and controlled cooling. During smelting, the scrap steel is added to the furnace along with the charge and smelted according to the conventional process. After tapping, the deoxidizer and alloy are added. After the molten steel is treated by argon blowing, it is cast immediately, and the molten steel after argon blowing and temperature adjustment is cast into a slab by a continuous casting machine. By adding rare earth elements to the steel, the weathering steel is purified and the content of inclusions is greatly reduced.
Just like you, 70% customers choose long-term cooperation with BBN steel not only for our good product and service quality, good reputation in the international market, but also for our experienced one-stop raw material supply and further steel processing!
