Abstract:A three dimensional mathematical model is used to study the effect of different process parameters and electromagnetic parameters on the behavior of molten steel and liquid slag interface and flow field in electromagnetic continuous casting mold of slab, considering the coupled effects of flow field and electromagnetic field. The volume of fluid (VOF) method is applied to describe the steel/slag interface in the mold. The effects of different pole position, port angle, casting speed and current value of coils on the behavior of steel/slag interface and flow field are discussed. The results show that the application of electromagnetic field can significantly decreased the height of steel/slag interface and reduced the impact strength of jet flow to the narrow face of the mold. For a constant casting speed and submergence depth of SEN, flow field patterns are directly influenced by pole position and port angle. With[P]is 40 mm, the height of steel/slag interface and surface velocity are reduced as increasing of current value and the probability of mould flux entrapment caused by level fluctuation is also decreased. However, with a farther distance between pole and SEN[(P=]80 mm), the impact direction of jet flow is deflected upward which caused a strongly upward backflow and increased the height of steel/slag interface, and then the probability of mould flux entrapment is increased.
李 壮,徐 宇,王恩刚. 板坯电磁连铸结晶器内钢/渣界面波动及流动行为的数值模拟[J]. 中国钢铁期刊网, 2016, 35(2): 1-8.
LI Zhuang,XU Yu,WANG En-gang. Numerical study on behavior of steel/slag interface and fluid flow in electromagnetic continuous casting mold of slab. Chinese Journal of Iron and Steel, 2016, 35(2): 1-8.