Thermal Stress Model of Solidified Shell for Horizontal Continuous Casting Billet
SHAO Lu; CAI Kai Ke; LIU Xin Hua and LI Shuan Lu
In order to quantify the understanding of crack formation in Horizontal Continuous Castingbillet, the twodimensional unsteady state mathematical rnodel for heat transfer and elas-toplastic stressmodel have been established. Using these models to calculate the thermal stress which occurred both duringsurface reheating of 150 × 150mm billet which is Just taken out of mold and during temperature drop in billetcentre near the end of solidification, the reasonable crack formation crrteria for about 0. 45% carbon steelhave been proposed as follows: In high temperature brittle zone higher than 1300 ℃ , the critical tensilestrength is about 170 390 Nlcm` ,the crrtical strain to fracture is about 0. 10%─ 0. 24%.
【CateGory Index】： TG335.13