A New Finite Element Analytical Model for Shell Thermal Behavior in Slab Continuous Casting Mold
A new two-dimension transient thermal-mechanical coupling finite element model was developed to simulate shell thermal behavior of peritectic steel solidifying in slab continuous casting mold by using sequential coupling method.In this model,in order to get the physical properties of the steel at high temperature,a microsegregation model with δ/γ transformation in mushy zone was established,and the heat flux was obtained from a shell/surface model which was established according to the displacement between solidifying shell surface and mold hot face as dynamic solidification contraction,the temperature distribution of shell surface and mold hot face,and dynamic distribution of mold flux and air gap.In addition,the rate-dependent elastic-viscoplastic constitutive equation was applied to account for the evolution of shell stress in the mold.Based on the coupling model,the thermal behavior including the distributions of air gap and mold flux,as well as shell temperature field of peritectic steel solidifying in slab continuous casting mold was simulated with the practical continuous casting conditions.
slab continuous casting mold thermal behavior air gap
CAI Zhao-zhen WANG Wei-ling ZHU Miao-yong
School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-6
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）