Influence of Mold Radius on Metallurgical Behaviour in Beam Blank

• 1、Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083
• 2、Rizhao Steel Holding Group Co.,Ldt, Rizhao 276806
• 3、Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083

Abstract：In this paper, a 3-D finite element mathematical model was established by customizing pull velocity field function of solidified shell, to evaluate the influence of varying mold radius on the metallurgical performances of beam blank continuous casting，including the fluid flow, heat transfer, and sNumerical Simulation of the Metallurgical Performances in the Beam Blank Continuous Castingolidification. When the central impact stream reaches to a certain depth, part of it circulates to scour the solidified shell, causing the slight remelting of solidified shell from about 400mm under meniscus and the thinner shell of fillet at the mold exit. What\'s more, the fillet of outside radius has the higher strand surface temperature but the thinner solidified shell than that of inside radius due to the mold curvature. With the mold radius decreasing, the strand surface temperature at fillet of outside radius decreases and the shell becomes thicker slightly , while the strand surface temperature at fillet of inside radius raises and the shell becomes thinner obviously. The solidified shell of outside radius is of greatly unevenness at the mold exit, and the fillet with the thinner shell is prone to arising crack quality problems.

Keywords： ferrous metallurgy beam blank coupled numerical simulation fluid flow heat transfer solidification