Effects of correlative factors on the interdendritic melt flow brought by the bulge in continuous casting slabs

Shuying Chen1,2), Guowei Chang2), Jianzhong Wang2), and Chunjing Wu1) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China Department of Materials and Chemical Engineering, Liaoning Institute of Technology, Jinzhou 121001, China

摘 要：The effects of various factors on the flow speed of interdendritic melt were analyzed in detail in the process of continuous casting slabs. When the solid-liquid interface bends periodically, the expression of solute distribution in the columnar crystal zone was deduced, and the quantitative calculation was also made. The results show that the bulge and the interdendritic spacing are responsible for the flow speed of interdendritic melt. At the initial stage of solidification the bulge operates, and at the final stage the interdendritic spacing operates. The experimental results of macrosegregation in the slabs validated the calculated results of the flow speed of interdendritic melt, which shows that the calculated results are basically consistent with the experimental ones.

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