Investigation of the solute transportation coupled with heat transfer and fluid flow during twin-roll strip casting process

Wanjun WANG¹，Xinhua WANG¹，Jiongming ZHANG¹，Chenxi JI²，Yongsheng WANG¹

(1.School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2.Shougang Group, Beijing 100043, China;
3.Jiuquan Iron & Steel (Group)

Abstract:Mathematical model of solute [C] distribution in twin-roll strip casting process has been setup successfully with Calcosoft for the first time. Simulation result shows that in the center of the molten steel pool between the two rolls there is a vortex flow, which is a solute enriched area. But the highest solute concentration position is at the solidification front of the columnar grain zone near the cooling roll surface. Another solute enriched position is in the back flow above the nip point. Combined with the formation mechanism of microstruoture in final as cast strip, analysis shows that solute enriched area is in the transitional area between columnar and equiaxed grain zone.

Key words:Twin-roll strip casting; Solute field simulation; Macrosegregation;

【全文内容正在添加中】