(1. 北京科技大学 机械工程学院，北京 100083;
2. 山东理工大学 设备系， 淄博 255012)
摘 要: 在分析轧制过程中热量转移的基础上， 应用ANSYS有限元软件分析了1400F铝带轧机工作辊与冷却液之间的换热特性，得到了工作辊表面与冷却液之间的对流换热系数， 以及对流换热中的冷却液喷射速度和温度的影响。 模拟结果表明， 对流换热系数值和热流密度值均随工作辊表面温度降低而减小，冷却液喷射速度的增大和温度的降低都会导致对流换热系数的增大。 仿真结果得到了实验的验证， 为计算工作辊温度场提供了边界条件。
关键字: 对流换热系数; 工作辊; 冷却液; 有限元
mill 1400F
（1. School of Mechanical Engineering ， University of Science and Technology Beijing， Beijing 100083， China
2. Department of Equipment,Shandong University of Science and Technology,
Zibo 255012, China）
Abstract:On the base of analysis of convective heat transfer during the milling, property of convective heat transfer between working rolls and coolant fluid of aluminum strip mill（1400F） was analyzed in detail with the famous software ANSYS. The value of film coefficients at different surface temperature of the working rolls was obtained. The effect of coolant fluid's velocity and temperature on convective heat transfer was also analyzed. The results of simulation show that the value of film coefficients and the value of heat flux will decrease as the surface temperature of the working roll drops. The value of film coefficients will increase with the rising speed and the reducing temperature of coolant fluid. These results are consistent with the experiments and provide the boundary conditions for working out the temperature field of the working rolls.
Key words: film coefficient; working rolls; coolant fluid; finite element analysis
