This article describes the role of molds in continuous casting production.
Key words: mold; continuous casting; function
Continuous casting refers to the direct casting of molten metal into continuous blanks, which is an important process in casting technology. In the continuous casting process, the crystallizer is one of the equipment that plays a vital role. It is located in the pouring part of the continuous casting machine and is mainly used to control the crystallization process of the billet and form the crystallization structure of the billet to ensure the quality and performance of the continuous casting billet.
The role of the crystallizer in continuous casting production is mainly reflected in the following aspects:
1. Control the crystallization process: The crystallizer can affect the crystallization structure of the billet by controlling the crystallization process. Crystallization channels of a certain shape and size are provided inside the crystallizer. By adjusting the temperature of the crystallizer, cooling water flow and other parameters, the crystallization speed of the billet and the formation of crystal nuclei can be controlled, thereby affecting the grain size and distribution of the billet. Reasonable control of the crystallization process can obtain fine and uniform grains and improve the plasticity and toughness of the billet.
2. Guarantee the quality of continuous casting billet: the crystallizer can effectively prevent the gas and impurities in the casting process from entering the billet, and reduce the pores, inclusions and defects of the billet. The structural design and material selection of the crystallizer need to take into account its anti-oxidation, corrosion resistance, wear resistance and other properties to ensure that the crystallizer can work stably for a long time and ensure the quality of the billet.
3. Adjust crystal structure: By changing the structure and process parameters of the crystallizer, the crystal structure of the billet can be adjusted to meet the requirements of different materials and products. For example, for high-strength steel, a crystallizer with fine grains can be used to improve the strength and toughness of the material; for special-purpose alloy materials, a crystallizer with a special structure can be used to obtain a specific grain shape and structure.
4. Improve continuous casting efficiency: The optimized design of mold can improve the efficiency and production capacity of continuous casting. By rationally arranging the number and position of the crystallizer, multi-runner continuous casting can be realized, and multiple billets can be poured at the same time to increase the productivity of the continuous casting machine. In addition, the crystallizer can also optimize the cooling process of the billet and improve the speed and efficiency of continuous casting by adjusting the cooling water flow and temperature distribution of the crystallizer.
Molds play a vital role in continuous casting production. By controlling the crystallization process, ensuring the quality of billets, adjusting the crystal structure and improving the efficiency of continuous casting, the mold can effectively improve the quality and performance of continuous casting billets and meet the requirements of different materials and products. Therefore, in continuous casting production, rational selection and use of crystallizers can not only improve product quality, but also improve production efficiency and reduce production costs, which has important economic and social significance.