Role of radiative and convective heat transfer during heating of an ingot product in a tubular furnace:experiment and simulation  

作　　者：Wen-chao Yang Yang Zhou Jian Zhang Huan Liu Ying-jie Ren Jia-jun Chen Xian-guang Zhang 

机构地区：[1]School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing(USTB),Beijing 100083,China [2]Chengdu Advanced Metal Materials Industrial Technolgy Research Institute Co.,Ltd.,Chengdu 610300,Sichuan,China

出　　处：《Journal of Iron and Steel Research International》2022年第12期1978-1985,共8页

基　　金：This research was financially supported by the Beijing Municipal Natural Science Foundation(No.2212041);National Natural Science Foundation of China(No.51804232).

摘　　要：Convective heat transfer and radiative heat transfer are two essential heat transfer modes in the heating process of steel;it is important to understand the role of them during the heating process clearly.The effects of the convective and radiative heat transfer during the heating process of a cast ingot in a tubular furnace have been studied by the designed natural and forced convection experiments and mathematical simulations.The heating time for the center of the ingot to reach the furnace temperature is decreased with the increase in furnace temperature.According to the experimental and simulation results,a model is proposed regarding the role of radiative and convective heat transfer in the heating process.At low temperature,the convective heat transfer plays a dominant role,while at high temperature,the influence of radiative heat transfer is larger.And a critical temperature exists between them.The forced convective heat transfer can enhance the influence of the convective heat transfer.The critical temperature can be shifted to higher temperatures.

关 键 词：REHEATING Tubular furnace Cast ingot Convective heat transfer Radiative heat transfer 

分 类 号：TK124[动力工程及工程热物理—工程热物理]