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以某厂板坯连铸结晶器为原型,采用1:1的水模型进行试验,以瞬时波高为判断依据,研究了拉速、浸入式水口出口角度、水口浸入深度、水口底面结构等工艺参数对板坯结晶器内流场和液面波动行为的影响。提出了优化结晶器流场的工艺参数,为在实际生产中减少结晶器内卷渣提供了依据。结果表明:拉速对板坯连铸结晶器内液面波动的影响最大,水口倾角次之;各工艺参数之间对结晶器内部流场的影响是相互制约的;提高拉速时,应适当增大水口浸入深度来控制液面波动以避免卷渣。
Taking a slab continuous casting mold of a certain factory as a prototype and a 1: 1 water model, the instantaneous wave height was taken as a criterion to study the process parameters of casting speed, immersion nozzle outlet angle, nozzle immersion depth and nozzle bottom structure. Effect of Flow Field and Liquid Surface Fluctuation on Slab Mold. The process parameters for optimizing the flow field of the crystallizer are put forward, which provides a basis for reducing the entrainment of slag in the mold in practical production. The results show that the pulling speed has the greatest influence on the liquid surface fluctuation in the slab continuous casting mold, and the nozzle angle is the second. The influence of the process parameters on the flow field in the mold is mutually restrained. When raising the drawing speed, Increase the depth of the inlet to control the liquid level fluctuations in order to avoid dregs.