重轨淬火过程温度场数值模拟分析

Simulation on temperature field of heavy rail during quenching

在传热学基础上,考虑了材料性能参数随温度变化,以及相变潜热对淬冷的影响,运用ABAQUS有限元软件,对U75V钢轨轨头喷水淬火过程温度场进行了有限元模拟,并用红外线热成像仪进行了现场测试,得到了钢轨温度随淬火时间的分布关系、进入相变的时间和温度.模拟结果与实测值接近,并为精确计算淬火过程中的热应力、残余应力以及弯曲变形规律做好了准备工作.

Based on the heat transfer theory,taking into account various factors such as material function parameter changing with the temperature,the effect of latent heat on quenching,and etc.,the temperature field during the quenching process was simulated using ABAQUS FEM software and measured by the infrared thermal imaging technique.The simulation result is close to the measured value in practice,providing theoretical references for the accurate calculation of residual stress and bending deflection.