Directly cast into steel billets through continuous casting equipment of steelmaking system

Process flow:

Steelmaking: First, raw materials such as iron ore, coke, limestone, etc. are sent to the blast furnace for smelting to obtain molten iron. The molten iron then enters the converter or electric furnace, and raw materials such as scrap steel are added. Impurities are removed through the oxidation process, and the composition is adjusted to obtain qualified molten steel.

Continuous casting: Qualified molten steel flows into a series of water-cooled crystallizers through the tundish of the continuous casting machine. The molten steel is rapidly cooled and solidified in the crystallizer to form a solid shell, while the molten steel inside continues to solidify. With the continuous movement of the continuous casting machine, the solidified steel billet is gradually pulled out, and after secondary cooling, water spray cooling, straightening, cutting and other processes, it finally becomes a steel billet of a certain length and specification.

Advantages:

High production efficiency, able to realize continuous casting of molten steel.

The surface quality of the steel billet is good and the internal structure is uniform.

The subsequent processing steps are reduced, and the production cost is reduced.

2. The semi-finished steel products are processed from the steel ingots or continuous casting billets produced by the steelmaking system through the rolling equipment of the steel rolling system

Process flow:

Steelmaking and continuous casting/ingot casting: First, steelmaking is carried out to obtain molten steel, and then the molten steel can be directly cast into continuous casting billets, or the molten steel can be cast into ingots.

Heating: The continuous casting billet or ingot is sent to the heating furnace and heated to a certain temperature to soften it and have good plasticity.

Rolling: The heated billet is rolled by the rollers of the rolling mill. During the rolling process, the billet is subjected to strong pressure and plastic deformation, and is gradually rolled into a semi-finished steel product of the required shape and size.

Cooling and finishing: The semi-finished steel product after rolling is cooled and necessary finishing processes such as straightening, shearing, etc. are carried out to obtain steel products that meet the standards.

Advantages:

Steel products of various shapes and sizes can be produced.

Rolling can improve the internal structure and mechanical properties of steel.

3. The semi-finished products are processed by forging equipment from the steel ingots produced by the steelmaking system

Process flow:

Steelmaking and ingot casting: Same as above, first steelmaking is carried out to obtain molten steel, and then the molten steel is cast into ingots.

Heating: The ingot is sent to the heating furnace and heated to the forging temperature to make it have good plasticity and forgeability.

Forging: The heated ingot is forged on forging equipment (such as forging hammer, press, etc.). During the forging process, the ingot is subjected to strong impact or pressure and plastic deformation occurs, and is forged into a semi-finished steel product of the required shape and size.

Cooling and heat treatment: The semi-finished steel product after forging is cooled and heat treated as needed (such as annealing, normalizing, quenching, etc.) to improve its organizational structure and mechanical properties.

Advantages:

It can produce steel products with complex shapes and excellent mechanical properties.

The forging process can refine the grains, eliminate defects, and improve the density and mechanical properties of the material.

In summary, there are many different production processes for steel billets, each of which has its own unique advantages and scope of application. Enterprises can choose the appropriate production process to produce high-quality steel billets according to market demand and product characteristics.