(1. 北京科技大學 機械工程學院，北京 100083;
2. 山東理工大學 設(shè)備系， 淄博 255012)
摘 要: 在分析軋制過程中熱量轉(zhuǎn)移的基礎(chǔ)上， 應用ANSYS有限元軟件分析了1400F鋁帶軋機工作輥與冷卻液之間的換熱特性，得到了工作輥表面與冷卻液之間的對流換熱系數(shù)， 以及對流換熱中的冷卻液噴射速度和溫度的影響。 模擬結(jié)果表明， 對流換熱系數(shù)值和熱流密度值均隨工作輥表面溫度降低而減小，冷卻液噴射速度的增大和溫度的降低都會導致對流換熱系數(shù)的增大。 仿真結(jié)果得到了實驗的驗證， 為計算工作輥溫度場提供了邊界條件。
關(guān)鍵字: 對流換熱系數(shù); 工作輥; 冷卻液; 有限元
mill 1400F
LIU Hong-fei1, LIANG Zhi-yuan1
（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
