Three-dimensional Analysis of the Steel Solidification and Heat Transfer inside a Funnel Mold
Because of the continuous variation of the shape and size in the inner of funnel-type mold,traditional 2D strip method cannot present the actual condition of the inner shape.On the other hand,the influence of slab shell and two-phase region on flow field and temperature field is often neglected in the analysis process of the traditional 3D flow field coupling method,and the liquid steel flow boundary conditions are difficult to be determined.In order to investigate the difference of steel solidification behaviors and heat transfer between the funnel mold and plate mold during continuous casting,a novel 3D heat transfer numeric model was established by using ANSYS software.During the calculation,the position coordinates of nodes in the finite element model are invariable.And it adopted the technique that node temperature transfer for simulating the slab withdrawing.After a period of time of analyzing the heat transfer of the slab in the mold,the stable characteristics of transport phenomena of the thin slab in the funnel-type mold were analyzed.This model was validated by comparing the shell thickness between the simulated results and breakout shell from an industrial caster.The results show that the total quantity of heat has been increased due to the funnel area expands the storage space of molten steel.The surface temperature in the center of the broad face increases continuously and shell thickness of the slab reduces gradually,which is consistent with the funnel-shaped arrangement of the mold.At mold exit,when casting speed is 4m/min,the surface temperature in the center of the broad face is 1086℃,which is 60℃ higher than plate mold.The shell thickness is about 9mm,which is 2.8mm thinner than plate mold.The temperature and thickness on the narrow face and corner of this two kind of mold are basically consistent.
funnel mold three-dimensional analysis solidification heat transfer ANSYS
XIAO Pengcheng WANG Zepeng LIU Zengxun ZHU Liguang
College of Metallurgy & Energy,Key Laboratory for Advanced Metallurgy Technology,Hebei Province High Quality Steel Continuous Casting Engineering Technology Research Center,North China University of Science and Technology,Tangshan 063009,Hebei,China
国际会议
STEELSIM2017(第七届冶金过程及钢铁材料模拟及仿真国际会议)
青岛
英文
274-278
2017-08-16（万方平台首次上网日期，不代表论文的发表时间）