退火钢卷辐射换热及对流换热的讨论  

Discussion of convection heat transfer and radiation heat transfer of annealing coil

作　　者：杨建平[1] 祁卫东[2] 陈光[3] 张丽徽[3] 

机构地区：[1]宝钢设备部,上海201900 [2]宝钢冷轧厂,上海201900 [3]安徽工业大学建筑工程学院,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2004年第4期273-277,共5页Journal of Anhui University of Technology（Natural Science）

摘　　要：主要研究罩式炉退火钢卷在退火过程中,对流热流及辐射热流的变化情况及其影响因素,由此得到退火过程的不同阶段 对流热和辐射热的大小比较,以判断在计算过程中,忽略辐射热流是否合理。计算得出,到退火加热中期,钢卷通过对流获得总 热量是通过辐射获得的总热量的35倍,到保温中期,这两个量仅相差9倍,且退火保温时间越长,二者差距越小。The main subject is about convection heat transfer and radiation heat transfer of steel coil in the HPH (High Performance hydrogen) bell-type annealing furnace .It depicts the quantity changes of the two heat transfer in the course of annealing, and the factors resulting in those changes .According to the comparison of the two heat transfer, the feasibility to neglect the radiation heat transfer in the mathematical model calculation is discussed. It reveals that in the middle of heating process, the heat quantity that obtained through convection heat transfer of steel coil is 35 times as much as the heat quantity obtained from radiation heat transfer, However, in the middle of heat soak ,the ratio of the two heat quantity is only 9 times, and the gap between them decreases as the increase of the time of heat preservation.

关 键 词：全氢罩式退火炉 对流换热 辐射换热 保温时间 

分 类 号：TF066.21[冶金工程—冶金物理化学]