Water model study on step-shaped submerged entry nozzle for high speed slab casting.
DENG Xiao-xuan1，JI Chen-xi1，PAN Hong-wei1，CUI Yang1，LI Lin-ping2，SUO Jin-liang2
1. Strip Technology Department， Shougang Research Institute of Technology， Beijing 100043， China 2. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China
Abstract：A full scale water model of continuous casting mold was built to investigate the fluid flow， level characteristics， mold flux profile and jet characteristics by a novel step-shaped submerged entry nozzle (SEN). The results show that this novel SEN shows better symmetrical fluid flow in the mold for high speed casting. In addition， the average level fluctuation of this SEN is 17% smaller than the traditional SEN； The FFT analysis of level fluctuation shows that the level fluctuation frequency is concentrated in about 1.2 Hz and the amplitude is 0.46 mm with the novel SEN， while the level fluctuation frequency is concentrated in about 1.1Hz and the amplitude is 0.7 mm with the traditional SEN；Furthermore， the surface velocity is 0.28 m·s－1 with the novel SEN at high speed casting， which is 32% smaller than that with traditional SEN (0.41 m·s－1)， Moreover， the level profile distance (wave peak-wave valley) and the exposed area of mold flux is much smaller than that of traditional SEN；The mechanism analysis shows that this new step-shaped SEN with its mix effect can improve the symmetry of jet velocity and thus prevent slag entrapment in the mold.
邓小旋，季晨曦，潘宏伟，崔 阳，李林平，索金亮. 板坯高拉速连铸台阶状水口的水模型研究[J]. 中国钢铁期刊网, 2016, 35(2): 24-31.
DENG Xiao-xuan，JI Chen-xi，PAN Hong-wei，CUI Yang，LI Lin-ping，SUO Jin-liang. Water model study on step-shaped submerged entry nozzle for high speed slab casting.. Chinese Journal of Iron and Steel, 2016, 35(2): 24-31.
2016, Vol. 35 
