Continuous castingContinuous casting is an intermediate link connecting steelmaking and rolling, and is an important part of steelmaking plants (or workshops).

Continuous casting

Continuous casting is an intermediate link connecting steelmaking and rolling, and is an important part of steelmaking plants (or workshops). The technological process of continuous casting production is: ladle → tundish → mold → secondary cooling → billet straightening → cutting → roller conveyor → pusher → casting billet. The application of continuous casting technology has completely changed the production process and logistics control of the steelmaking workshop, providing conditions for the continuity of production in the workshop, the application of automation and information technology, as well as the substantial improvement of the environment and the improvement of product quality. In addition, the development of continuous casting technology will also drive the development of other industries in the metallurgical system, and will play an important role in promoting the simplification and optimization of corporate organizational structure and product structure.

2 Characteristics of continuous casting

The continuous casting process is a process in which molten steel releases sensible heat and latent heat in a continuous state, and gradually solidifies into a certain shape of billet. In the process of the transition from liquid to solid steel, there is momentum, heat and mass transmission in the system, phase change, deformation caused by external force and stress. These processes are all very complex, often coupled or interacting with each other. Compared with die casting-blooming billeting process, continuous casting process has the following advantages.

(1) The process flow of casting billet production is simplified, and the demolding, complete mold, steel ingot soaking and billeting processes of the mold casting process are omitted, the capital investment can be saved by 40%, the floor space can be reduced by 30%, and the operating cost It can save 40% and the consumption of refractory materials can be reduced by 15%.

(2) The metal recovery rate is improved, on the one hand, the loss of the cutting head and tail of the billet is greatly reduced; on the other hand, the produced cast slab is closer to the shape of the final product, eliminating the heating and billeting process of the die casting process. The metal loss is reduced, and the metal recovery rate can be increased by about 9%.

(3) The energy consumption of the production process is reduced, the combustion power consumption of the soaking furnace for ingot blooming can be omitted, and the energy consumption can be reduced by 1/4 to 1/2.

(4) Improve the mechanization and automation level of the production process, and create favorable conditions for the improvement of labor productivity and the modern management upgrade of enterprises.