Mathematical model of heat transfer for bloom continuous casting

作者：Liu Qing^*; Wang Liangzhou; Zhang Liqiang; Cao Liguo; Ding Xiuzhong; Liang Mei; Qi Yongge

来源：Journal of University of Science and Technology Beijing, 2008, 15(1): 17-23.

DOI：10.1016/S1005-8850(08)60004-3

• continuous casting
• mathematical model
• solidification
• bloom
• automobile stee

A mathematical model for heat transfer during solidification in continuous casting of automobile steel, was established on researching under the influence of the solidifying process of bloom quality of CCM in the EAF steelmaking shop, at Shijiazhuang Iron and Steel Co. Ltd. Several steel grades were chosen to research, such as, 40Cr and 42CrMo. According to the results of the high temperature mechanical property tests of blooms, the respective temperature curves for controlling the solidification of different steels were acquired, and a simulating software was developed. The model was verified using two methods, which were bloom pin-shooting and surface strand temperature measuring experiments. The model provided references for research on the solidifying process and optimization of a secondary cooling system for automobile steel. Moreover, it was already applied to real production. The calculated temperature distribution and solidification trend of blooms had offered a reliable theory for optimizing the solidifying process of blooms, increasing withdrawal speed, and improving bloom quality. Meanwhile, a new secondary cooling system was designed to optimize a secondary cooling water distribution, including choice and arrangements of nozzles, calculation of cooling water quantity, and so on.

• 出版日期2008-2
• 单位北京科技大学