Effect of solidified shells on fluid characteristics in high casting speed slab mold
HUANG Qi1 , XIONG Xiao1, DENG Xiao-xuan2, WANG Xin-hua1, WANG Wan-jun1, JIANG Min1
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Shougang Research Institute of Technology, Beijing 100041, China
Abstract：A full scale water model of continuous caster was built to investigate the effect of solidified shell on fluid flow, level characteristics and entrapment characteristics in high casting speed mold with stimulus-response method, level fluctuation sensor and velocity meter. The result showed that the time of fluid reaching surface is shortened with the consideration of solidified shells. Furthermore, at high casting speed (2.4 m/min), the maximum average level fluctuation and meniscus velocity in the mold with solidified shell are 31% and 17.5% larger than those in the mold without shells, which facilitates the slag entrapment. The main reason is that when the shell is taken into account, the reduced free flowing space in the lower part of the mold results in the lower recirculation being restrained whereas the upper recirculation gaining more turbulent energy. Therefore, it is necessary to consider the influence of solidified shells, especially under the condition of high casting speed.
黄 琦， 熊 霄， 邓小旋， 王新华， 王万军 ， 姜 敏. 凝固坯壳对高拉速板坯连铸结晶器钢水流动特征的影响[J]. 钢铁, 2015, 50(1): 37-42.
HUANG Qi , XIONG Xiao, DENG Xiao-xuan, WANG Xin-hua, WANG Wan-jun, JIANG Min. Effect of solidified shells on fluid characteristics in high casting speed slab mold. Iron and Steel, 2015, 50(1): 37-42.
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