用数值模拟方法研究了高拉速下拉速、水口出口角度、浸入深度、铸坯宽度和保护渣黏度对钢/渣界面行为的影响规律, 并利用水模型实验进行了验证. 研究表明, 在一定拉速下, 增加水口浸入深度和向下的张角能有效抑制钢/渣界面波动; 熔渣黏度对钢/渣界面形状几乎没有影响,而界面速度随熔渣黏度的增加而减小.
The entrainment of steel and slag interface has a great effect on casting process and the product quality. The research described the interfacial behavior between fluid steel and molten slag layer in a slab continuous casting mold with high casting speed by numerical simulation method. Good agreement between the mathematical model and experimental observation was obtained. The influences of casting speed, mold width, port angle, submergence depth of SEN and molten slag viscosity on interfacial behavior were investigated. For a given casting speed, increasing the penetration depth and downward port degree can effectively restrain interfacial oscillations. Molten slag viscosity has hardly influence on interfacial profile of steel and slag. Steel-slag interface velocity decreases with increasing molten slag viscosity.
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