1600mm×230mm板坯结晶器流场及液面波动水模拟研究

Water modeling study on flow field and liquid level fluctuation in 1600 mm×230 mm slab casting mold

以某厂1 600 mm×230 mm的板坯结晶器为研究对象,利用相似原理,建立1:2的物理模型,采用波高检测、粒子示踪等方法,研究了不同水口底部形状、浸入深度以及拉速对结晶器流场和液面波动的影响。试验结果表明:采用凸底浸入式水口,拉速为1.1 m/min,浸入深度为220 mm或260 mm时,结晶器液面波动幅度和注流冲击深度较低,无卷渣现象发生。

A hydraulics model of 1：2 is established using the similarity principle to simulate the 1600 mm×230 mm continuous casting mold. The influence of nozzle bottom shape,nozzle immersion depth and casting speed on the flow field and liquid level fluctuation in the slab casting mold has been investigated using wave detection and particle tracing method. The experimental results show that the liquid level fluctuation amplitude of the mold and the impact depth of the injection flow is low,and no slag entrapment occurs,when the convex bottom nozzle is used,and the casting speed is 1.1 m/min and the immersion depth is 220 mm or 260 mm.