热力耦合CSP连轧过程温度场的有限元分析

借助Marc商用软件,采用二维弹塑性大变形热力耦合有限元法,对薄板坯CSP第一道次热轧过程的温度场进行模拟,分析了轧制过程中轧件温度场的分布和变化规律.结果表明:在轧件变形过程中,接触热传导和变形热是影响温度变化的主要因素,二者的综合作用决定了轧件的温度变化规律;轧制结束后,轧件从表面到心部在一定厚度范围内出现明显的温度梯度,超过该临界厚度值,轧件温度基本保持不变.分析结果可以为工业生产提供参考.

Thermal-mechanical coupled finite element analysis of temperature field during continuous rolling on CSP

The first pass hot rolling process of thin slab was studied with the aid of two dimensional elastic-plastic and thermal-mechanical coupled FEM using commercial software Marc. The distribution and change of temperature field in rolling process were analysed. The results show contact heat conduction and deformation heat are the main factors that influence temperature change and their synthetic functions determine the workpiece temperature changes during deformation. There is obvious temperature gradient from surface to centre of the workpiece within a certain depth. The workpiece temperature almost remains constant beyond this critical depth. The result serves as reference to the industrial production.