铝箔轧机中生成热分配的实验及分析

Distribution of Heat Production in Aluminum Foil Mills

系统分析了铝箔轧机轧制过程中热量转移及热量平衡的过程,提出了一种热量转移的观点。实际测量了三种不同喷嘴开放状态下分段冷却的轧件表面温度,采用理论分析与实验相结合的方法,求出了对应工况下轧件和工作辊所吸收热量的热功率,得到了生成热在轧件与轧辊间的分配系数,轧件分配系数大致为0.11～0.33,轧辊分配系数为0.67～0.89。随冷却能力的增强,轧辊分配系数增大,轧件分配系数减少。

The transfer and balance of heat during the cold rolling of aluminum foil were analyzed. The surface temperature of aluminum foil was measured in three ways with different open nozzles. With the theoretical analysis and experimental results, the power of heat absorption of the aluminum foil and the working roll were determined respectively, and the partition coefficient between the aluminum foil and the working roll was calculated. The results show that the partition coefficient of the aluminum foil varies from 0.11 to 0.33, while that of the working roll varies from 0.67 to 0.89. The partition coefficient of the working roll increases with the intensification of cooling ability.