Lateral Bending and Stress Redistribution of High Strength Steel Strip after Longitudinal Slitting

被引：0
|
作者：
Zhou B. [1 ,2 ]
Shao J. [1 ,2 ]
He A. [1 ,2 ]
Si X. [3 ]
Cui Y. [3 ]
Wen C. [3 ]
机构：
[1] Institute of Engineering Technology, University of Science and Technology Beijing, Beijing
[2] National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing
[3] Fourth Steel Rolling Plant of Maanshan Iron and Steel Co., Ltd., Maanshan
来源：
Shao, Jian (jianshao@ustb.edu.cn) | 1600年 / Chinese Mechanical Engineering Society卷 / 56期
关键词：
Finite element method; High strength steel strip; Lateral bending; Longitudinal slitting; Stress redistribution;
D O I：
10.3901/JME.2020.18.043
中图分类号：
学科分类号：
摘要：
TMCP has been widely used in the production of high strength steel. Due to the demand for fine grain strengthening, high strength steel strip's fast cooling rate, uneven lateral temperature and unsynchronized cooling, make the control of the internal stress along the transverse during rolling and cooling difficult, and it is easy to cause lateral bending defect after longitudinal slitting, which is a common problem in the production of high strength steel strip. A finite element model is established by ABAQUS combined with FORTRAN subroutine, which is verified by analytical model. The results show that the relationship between the lateral bending and the stress redistribution after longitudinal slitting is closely related. The longitudinal slitting breaks the equilibrium of the initial stress of the strip, and the stress redistributes and reaches the second equilibrium. Combined with the research conclusions, the process optimization of high strength steel levelling in rolling mill is applied, and the outer lateral bending defect of the first and fourth strips of the M510L is well solved, further verifying the validity of the research process and results. The research on the stress redistribution during longitudinal slitting provides theoretical guidance for the prevention of slitting defects. © 2020 Journal of Mechanical Engineering.
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页码：43 / 50
页数：7
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