Characteristics of Continuous Casting Billet Quality
Continuous casting technology is one of the most advanced casting methods, which uses the principle of molten metal free settling by centrifugal force to form a thin cylindrical solid shell on the surface of an endless metal liquid in the billet-forming zone, thereby forming a high-efficiency production route with lower energy consumption, cleaner production and higher production quality. Continuous casting billets have excellent mechanical properties, and their shape, size, cross-sectional tolerance and surface quality meet the requirements of downstream processes.
The quality of the continuous casting billet affects the quality of the subsequent finished product. Therefore, the quality of the continuous casting billet is directly related to the interests of customers. The quality control of the continuous casting billet should first control the preparation before casting, including the selection of raw materials, the selection of consumables and the determination of process conditions. Then, we should monitor and adjust the casting process to ensure the production quality during the production process.
Before the continuous casting billet is cast, it is necessary to determine the chemical composition, the cutting performance, the flowability and the surface quality. The chemical composition and cutting performance are related to the selection of raw materials and alloy elements. The flowability and surface quality are related to the adjustment and control of the melting process. Therefore, the selection of raw materials and the adjustment of the melting process must be done as accurately and accurately as possible.
The control of continuous casting billet quality should start from the design and installation of the continuous casting machine. The design and installation of the continuous casting machine should be conducted by professional personnel, and the technical parameters should be adjusted and adjusted carefully. During the casting process, the temperature, speed and other parameters should be closely monitored and adjusted, and the shape size and surface quality should be straightly checked.
During the continuous casting process, attention should be paid to the opening of the gate slot and the gate size, and to the smooth passage of the molten steel. During the process, sparks must be prevented from falling into the molten steel, and control of the environment temperature must be strictly observed. In particular, the casting speed should not be too fast, otherwise the quality of the casting billet will be affected.
In addition, during the casting process, various parameters such as the undulation of the shell, the size of the submerged nozzle, the rolling condition of the water film on the surface of the liquid metal and the fluctuation of the casting temperature should be monitored and adjusted, so as to ensure the quality of the continuous casting billet.
To sum up, the quality of the continuous casting billet is closely related to the process, and it is necessary to properly control the process parameters during the casting process to ensure the quality of the billet. In addition, attention should also be paid to the design and installation process of the continuous casting machine, and measures should be taken to strictly control the temperature and heat balance in the production environment, so as to achieve the required casting quality.
