Generation Mechanism of Unsteady Bulging in Continuous Casting-2 -FEM Simulation for Generation Mechanism of Unsteady Bulging-

Abstract

In the continuous casting of steel, unsteady bulging contributes to degradation of slab quality. It has been reported that unsteady bulging is promoted by uneven solidification in the mold, but the effect of uneven solidification on unsteady bulging has not been clarified. In this study, a Finite Element Method (FEM) simulation was conducted. Shell deformation was calculated by an elasto-plastic analysis assuming that the slab moves between the rolls, considering time dependency. The bulging value and mold level fluctuation, which change corresponding to the solidified shell thickness, ferrostatic pressure and roll pitch, were obtained.