【摘要】 建立了热流力耦合的三维非稳态有限元模型,对结晶器内钢水凝固过程中的传热、流动和变形情况进行了模拟。以尺寸为1.2mm×0.2m的Q235B板坯为研究对象,利用Procast软件的二次开发,求解出了结晶器区域内的温度场、流场和应变分布。计算结果表明,铸坯收缩量在不同方向上存在不同的分布状态。考虑气隙产生对传热的影响时,结晶器出口铸坯表面平均温度由1120.5℃增加到1289.7℃,坯壳厚度由16.1mm减少到14.2mm。更多还原

【Abstract】 According to the requirement of improving production efficiency and slab quality in a continuous steel slab caster,A 3D non-steady thermal-flow-stress model was developed to explore the solidification and flow process in mould.The width and thickness of slab are 1.2m and 0.2m,and respectively the steel grade is Q235B.The distributions of temperature,flow,stress and strain in caster were obtained by using the commercial software,ProCAST.The results show that the shrinkage of slab has different shape curve on different direction.Consider of the effect of gap width,the average temperature at mold exit increases form 1120.5℃to 1289.7℃,and the shell thickness decreases from 16.1mm to 14.2mm.更多还原