【作者】 丁建国； 程树森； 成国光；

【Author】 Ding Jianguo~(1,2) Cheng Shusen~1 Cheng Guoguang~1 (1. School of Metallurgy and Ecological Engineering, University of Science and Technology, Beijing100083; 2. Changzhi Iron and Steel Co., Ltd. 046031)

【机构】 北京科技大学冶金与生态学院；

【摘要】 本文通过数值模拟方法,采用k-ε双方程模型模拟了钢水从钢包到中间包的浇铸过程中,从长水口吹入气体后中间包内钢水流动状态的变化。模拟结果表明:吹气前从长水口流出的钢水,呈向下流动的趋势,然后直接流向出口;吹气后中间包内钢液的流动方向发生改变,钢液并未向下流动,而是先上升到渣金交界面,然后沿渣金界面流向中包的出口,后一种流动有效地增加了钢液在中间包的停留时间,增加了夹杂物与渣的接触时间,有利于中间包钢水成分及温度的均匀,特别有利于夹杂物的去除。沿中包长边的速度分布基本服从正态分布。更多还原

【Abstract】 In this paper, the changing of flow in tundish during the process from ladle to tundish is simulated by k-ε modle with numerical simulations after the gas injection. The simulation result displays that the flow direction in tundish is changed when gas is injected from the shroud. Molten steel without blowing gas outgoing from shroud,directly flow down, and then directly flow to outlet. Molten steel direction of flow in tundish occur transfer, they don’ t flow down, but firstly rose to slag-motlen interface, and then flow to tundish export. The second way effectively delay residence time of steel in tundish, increase inclusion and slag dewell time. benifit steel component and temperature uniformity. in particular, in favor of inclusion removal. Velocity distribution along long-side submit Gaussian distribution.更多还原