Thermal Behavior of Hot Strip in Finishing Mill of Hot Rolling Process

To apply efficient rolling conditions in the finishing rolling process, a correct prediction of the behavior of the strip temperature is required. This study is focused on the temperature distribution of the strip temperature from FET to FDT of the actual finishing rolling process. The heat transfer phenomena generated during the finishing rolling process, such as heat generation, cooling and conducting, were modeled in this study using the finite difference method. Using various heat transfer phenomena generated in the finishing rolling process and the correlation formula of spray cooling coefficient, the calculation accuracy was improved and a simulator to predict the temperature distribution of strip was prepared. The calculated result is compared to the online model used in the actual industry.