Flat steel production process revealed: a detailed journey from raw materials to finished products

The following is a revelation of the flat steel production process, showing the delicate journey from raw materials to finished products:

1. Raw material preparation
The raw materials of flat steel are mainly scrap steel and pig iron, etc., which are smelted in electric arc furnaces or induction furnaces. During the smelting process, appropriate amounts of alloying elements such as manganese and silicon are added to adjust the chemical composition of the flat steel to ensure that it has the required strength, toughness and corrosion resistance.

2. Continuous casting into billets
The smelted molten steel is cooled into billets through a continuous casting machine. The key to continuous casting technology is to control the composition, temperature and pouring speed of the molten steel to ensure the quality and stability of the billet. The advantages of continuous casting technology are to improve production efficiency, reduce energy consumption and reduce production costs. This process ensures the high quality and continuity of the molten steel and reduces defects in the production process.

3. Rolling forming
The continuous casting billet enters the rolling mill for plastic processing. Through multiple rolling passes, the billet is gradually deformed into the required flat steel shape and size. The key to rolling technology is to control the rolling temperature, rolling speed and rolling passes to ensure the dimensional accuracy, surface quality and mechanical properties of the flat steel. After rolling, the flat steel needs to be cooled, usually in a continuous cooling device, such as a continuous cooling oil quenching device, to improve its strength and hardness.

4, finishing treatment
The flat steel enters the finishing stage, including cutting, straightening, surface treatment and marking, to ensure that it meets the specifications and quality requirements. The internal quality and dimensional accuracy of the flat steel will also be checked during the finishing process to ensure that it meets the customer's requirements.

Cutting: Cut the rolled flat steel to the required length.
Straightening: Straighten the cut flat steel to improve its straightness and accuracy.
Surface treatment: Grind and polish the flat steel to improve the finish and aesthetics of the product. In addition, painting, electroplating and other treatments can be carried out as needed to improve the product's anti-corrosion and wear resistance.
5. Quality inspection and packaging
The finished flat steel is subjected to necessary quality inspections, including inspections of size, shape, surface quality, etc. After ensuring that the product meets the relevant standards and customer requirements, it is packaged and stored for subsequent transportation and use.

In summary, the production process of flat steel is a complex process involving multiple key steps, including melting, continuous casting, rolling, cooling, finishing, quality inspection and packaging, etc. These steps together ensure the high quality and compliance of flat steel to meet the requirements of different fields and markets.