基于ANSYS有限元法的热卷箱内中间坯温度场分析

Temperature field analysis of intermediate slabs in the hot coil box based on ANSYS finite element method

应用有限元分析软件ANSYS,根据国内某厂2250热连轧生产线上的热卷箱工作情况,采用ANSYS生死单元和重启动技术模拟中间坯的卷取、保温和开卷时的生产节奏.在仿真计算的基础上,确定中间坯在各种热交换条件下的界面换热系数,分析热卷箱内各工艺参数和环境因素对中间坯温度的影响,并根据建立的中间坯在热卷箱内的三维温度场的数学模型,最终计算得出中间坯在热卷箱出口的温度数值,为热轧现场的温度控制提供可行性建议.

According to the working conditions of the hot coil box in a domestic steel 2250 hot rolling production line, the birth-death element and re-start technology of the finite element analysis software ANSYS was adopted to simulate the production rhythm of coiling, insulation and uncoiling of intermediate slabs. The interface heat transfer coefficients of intermediate slabs were determined in different heat transfer conditions. The effects of process parameters and environmental factors on the temperature of intermediate slabs in the hot coil box were analyzed on the basis of simulation data. A mathematical model of three-dimensional temperature fields was established for intermediate slabs in the hot coil box. Finally, the outlet temperature of intermediate slabs in the hot coil box was calculated, which can provide us with some feasible suggestions for hot rolling temperature control.