多道次可逆立-平轧制的数值模拟

利用显示动力学方法和重启动方法,以现场实际轧制参数为基础,对5道次可逆立-平轧制过程进行了数值模拟.结果表明:厚件在轧制过程中容易产生双鼓变形,而薄件一般出现单鼓变形;立辊轧制可以有效地纠正双鼓变形,避免形成边部金属夹层;对角部节点进行跟踪发现角部的金属最终流动到板坯的上下表面;立轧具有一定的修复微小缺陷的作用,从而改善和提高了带钢的边部质量.该方法的应用为可逆轧制分析提供了新的分析方法,可以为立-平轧制的各道次提供准确的轧制参数.

Numerical Simulation of Reversible V-H Multipass Rolling Process

Based on the actual data acquired in site,the reversible V-H 5-pass rolling process was numerically simulated with explicit dynamic method and restart method.The results showed that in the rolling process the thick slabs tend to double bulging deformation,while the thin ones exhibit single bulging deformation in general.The vertical or edge rolling can correct the double bulging deformation effectively so as to avoid metal sandwiches on the edge of workpiece.Tracking the corner nodes,it is found that the sl...