Principles in cast rolling with liquid core of thin slab continuous casting

Dynamic rolling deformation behavior of continuously cast slabs with liquid core is studied with the aid of the thermomechanically coupled finite elem ent method (FEM) of elastic-plasticity. The effects of shell thickness and related height reduction on the longitudinal tensile strain of strand are a nalyzed from a simplified three-dimensional (3-D) model. The results show t hat the longitudinal tensile deformation can be omitted for strands with th in shell, but it cannot be neglected for those with thick shell. A new conc ept of inward pushing or pushing into the liquid core is put forward based on the analysis, which leads to a reasonable explanation and better underst anding of the liquid core cast-rolling processes in the present Inline Stri p Production (ISP) thin slab casting.