李革1，刘志敏1，陈林2
（1.内蒙古科技大学 建筑与土木工程学院，内蒙古包头 014010;2. 内蒙古科技大学 材料与冶金学院，内蒙古 包头014010）
关键词：钢轨，表面综合换热系数，计算方法
中图分类号：TG162.82 文献标识码：A
摘要：基于传热学理论，采用两点法、三点法、整体法分别计算了钢轨喷雾冷却工艺中的表面综合换热系数，将它们代入计算模型计算出了钢轨的降温曲线，并与实验值进行了比较。计算结果表明：整体法算出的综合换热系数代入计算模型计算得到的降温曲线与实验值接近，更符合实际情况。
Research of the Calculation Methodabout the Integrated Heat Transfer Coefficient on the Surface of Rail in Spray Process
LI Ge1,LIU Zhi-min1,Chen Lin2
(1.Architecture and Civil Engineering School, Inner MongoliaUniversity of Science and Technology, Baotou Inner Mongolia 014010;2. Materialand Metallurgy School, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010)
Key words: Rail; Surface comprehensive heat transfer coefficient; calculation method
Abstract: Based on heat transfer theory, thecomprehensive heat transfer coefficient on the surface of the rail wascalculated by using the two point method, three point method and the wholemethod in the spray cooling process. Then, these differently-calculated coefficientswere adopted in the model to get the cooling curve ,which is compared with theexperimental value. The calculation results show that the cooling curve by comprehensiveheat transfer coefficient obtained using the whole method is close to theexperimental value and in line with the actual situation.