Production Process of Weather Resistant Steel
The production process of weather resistant steel is a complex and fine process, mainly including the following steps:
1. Raw material preparation: Its raw materials are mainly iron ore, alloying elements (such as copper, chromium, nickel, phosphorus, etc.) and other additives (such as manganese, silicon, etc.). The addition of these alloying elements and additives is designed to improve the weather resistance and mechanical properties of steel.
2. Steelmaking: In the process of steelmaking, ferromanganese, ferrochrome and other raw materials are smelted together with iron ore. This process requires workers to precisely control the melting temperature and chemical composition. This is how you get the right molten steel.
3. Continuous casting: The refined molten steel is poured into the continuous casting billet machine for continuous casting to form the casting billet. The quality of casting billet directly affects the performance of subsequent products.
4. Hot rolling: the casting blank is hot rolled and rolled into the required sheet or profile. In the process of hot rolling, it is necessary to strictly control the rolling temperature and rolling speed to ensure the surface roughness and mechanical properties of the product.
5. Heat treatment: Heat treatment is the key link in the production of this steel. By controlling the heating temperature, holding time and cooling speed, the alloying elements in the steel form a suitable compound and crystal structure with other elements. This process mainly includes two ways of normalizing and quenching. This can effectively improve its mechanical properties and weather resistance.
6. Finishing, testing and cutting: The steel after heat treatment will be finished, tested and cut, and finally become a qualified finished product.
Performance profile
Weather resistant steel, also known as atmospheric corrosion resistant steel, is a low alloy steel series between ordinary steel and stainless steel. Its main performance features include:
Weather resistance: The alloying elements added to the steel make it have excellent atmospheric corrosion resistance, and the weather resistance is 2 to 8 times that of ordinary carbon steel. This gives it a longer service life in outdoor environments.
Mechanical properties: It has the strength of high-quality steel, plastic extension, molding, welding and cutting, abrasion, high temperature, fatigue resistance and other characteristics. These mechanical properties make it widely used in the fields of construction, bridge and engineering structure.
Coating property: Its coating property is 1.5 to 10 times that of ordinary carbon steel. In the case of painting, the steel can provide better coating effect and longer protection time.
Environmental protection: It has the characteristics of rust resistance, corrosion resistance and prolonging life of components, thinning and consumption reduction, labor and energy saving. These characteristics make it play an important role in reducing environmental pollution and resource waste.
Engineering Application of Weather Resistant Steel
Bridge engineering: It can manufacture the load-bearing structures and decorative panels of Bridges. Its characteristics of corrosion resistance and aging resistance can effectively extend the service life of the bridge.
Construction works: It also plays an important role in construction works. The external walls, roofs, floors and other parts of buildings, and even parts such as railings, doors and Windows, can use this steel. Its excellent performance can effectively improve the service life of buildings and decorative effects.
Railway engineering: In railway engineering, it can make railway Bridges, tunnels, protective walls, switches, signal columns and other structural parts. Due to the high speed and high vibration force of high-speed train, the requirements of thermal fatigue and vibration fatigue of steel are high. And weather-resistant steel can meet these needs.
Landscape garden: Its application in landscape garden is also more and more extensive, such as landscape wall, retaining wall, landscape construction, ground pavement, sculpture and so on. Its unique color and texture can add a unique charm to the landscape.
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