Quality improvement and practice of high speed continuous casting of billet based on secondary cooling optimization
LI Wei1, TAN Zheng-jun1, CHENG Jin-jun2, LIN Qian2, ZHANG Li-qiang2
1. Echeng Steel Co., Ltd., Baowu Group, Ezhou 436000, Hubei, China; 2. School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243032,Anhui, China
Abstract：In order to increase casting speed, speed up production, ensure slab quality and improve production efficiency, the secondary cooling system of 7-machine 7-billet caster in a factory was optimized, and the secondary cooling water distribution model was studied. According to the main steel composition, the length of each zone in the secondary cooling zone, the nozzle type and other factors, the model is optimized. By optimizing the water distribution parameters, the billet quality is ensured and the dynamic control is realized. Through the secondary cooling compensation water transformation, process temperature control, de-square control, billet internal quality control and other measures, the yield of the continuous casting plant increased to 278.5 t/h, increased by 8.30%, and the low-time first-class yield was more than 95.14%.
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2022, Vol. 41 
