Re-reddening on Strip Surface After Water Cooling

作     者：ZHI Ying LIU Xiang-hua WANG Guo-dong 

作者机构：State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China 

出 版 物：《Journal of Iron and Steel Research International》 (J. Iron Steel Res. Int.)

年 卷 期：2007年第14卷第3期

页      面：26-29,55页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Item Sponsored by National Natural Science Foundation of China(50504007) State Basic Research Key Projects (973) of China(2006CB605208-1) 

主　　题：temperature field re-reddening laminar cooling cooling rate hot rolled strip finite element method 

摘      要：After water cooling, there is a big temperature difference between the center and the surface of strip, which leads to the heat transfer from the center to the surface, and the surface temperature can rise in a short time. The finite element method was used to simulate the phenomena of re-reddening on the surface of strip and to analyze the temperature field of hot roiled strip during laminar cooling, and the periodical variation curve of the cooling rate was obtained during water cooling and subsequent re-reddening. The results show that the critical line of the cooling rate is at 1/3 of the half-thickness from the strip surface. The regression model of the relation of rereddening temperature, time, and distance from the surface was obtained in the re-reddening region. Re-reddening regularity on the surface of strip under the condition of different thickness and cooling rate was also studied.