Weatherproof plate is mainly used in bridge construction engineering. Due to the addition of corrosion-resistant alloy elements, it has superior atmospheric corrosion resistance compared with ordinary bridge steel. It shows that this product is a structural steel plate for bridges with thickness ≤ 150mm, a structural steel strip and shear steel plate for bridges with thickness ≤ 25.4mm, and a structural steel section for bridges with thickness ≤ 40mm.
The weathering plate generally adopts the process route of fine material feeding - smelting (converter, electric furnace - microalloying treatment - blowing - LF refining - low superheat continuous casting (feeding rare earth wire) - controlled rolling and controlled cooling. During smelting, scrap steel is added into the furnace along with the furnace charge, and is smelted according to the conventional process. After tapping, deoxidizer and alloy are added. After the molten steel is blown, it is immediately cast. The molten steel after blowing and temperature adjustment is cast into slab by continuous casting machine. Due to the addition of rare earth elements in the steel, the weathering plate is purified and the content of inclusions is greatly reduced.
Weatherproof plate has protective rust layer and atmospheric corrosion resistance, and can be used to manufacture low alloy structural steel for steel structures such as vehicles, bridges, towers, containers, etc. Compared with ordinary carbon steel, the weathering plate has better corrosion resistance in the atmosphere. Compared with stainless steel, weathering plate has only a small amount of alloy elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc. The total amount of alloy elements only accounts for a few percent, unlike stainless steel, which accounts for more than ten percent, so the price is relatively low.
Physical characteristics of weathering board
The main physical feature of weathering board is corrosion resistance, and the corrosion resistance is mainly used in landscape construction and landscape production. The physical properties of the weathering board are superior, and the processing technology is relatively pure and fine, which can play a role in all walks of life.
Weather-proof plate is a kind of flat steel with large width-thickness ratio and surface area. The steel plate is divided into thin plate and thick plate according to thickness.
Weather-proof plate is a steel plate with a thickness of 0.2-4mm produced by hot rolling or cold rolling.
Weather-proof plate can be divided into shipbuilding steel plate, bridge steel plate, boiler steel plate, high pressure vessel steel plate, checkered steel plate, automobile steel plate, armor plate and composite steel plate according to the purpose.
