高锰无磁钢异步热轧温度场有限元分析

Analysis on temperature field for high manganese non-magnetic steel in hot asymmetrical rolling process using the finite element method

为研究高锰无磁钢异步热轧过程中温度场的变化规律。文中采用有限元软件MSC.Marc,并基于刚塑性有限元法的仿真模型对高锰无磁钢的异步热轧过程进行数值模拟,分析了轧制过程中初始温度、压下量和异速比对轧件上、下表面和心部温度的影响。研究结果表明:在轧制过程中轧件存在明显的温度效应。在变形区域,各节点温度曲线增幅随着初始温度的上升而减小,温度效应呈逐渐减弱的趋势;随着压下量和异速比的增加,轧件上、下表面温度下降幅度逐渐减小,而心部温度上升幅度逐渐增大。

In order to study the variation law of temperature field during asynchronous hot rolling of high manganese non-magnetic steel,the Finite Element Software MSC.Marc was used and the simulation model based on rigid-plastic finite element method was used to simulate the asynchronous hot rolling process of high manganese non-magnetic steel.The effects of initial temperature,reduction and allometric speed ratio on the temperature of upper and lower surface and center of the rolled piece during rolling were analyzed.The results show that there is obvious temperature effect in the rolling process.In the deformation region,the increase of temperature curve of each node decreases with the increase of initial temperature,and the temperature effect decreases gradually.With the increase of reduction and allometric speed ratio,the decrease of temperature on the upper and lower surface of the rolled piece decreases gradually,while the increase of temperature at the center of the rolled piece increases gradually.