|
|
|
| Improvement in shape control performance of finishing mills in endless rolling production line |
| Zhao-yang Li1,2, Zhi Qi3, Lan-tian Guo3, Shu-huan Wang1, Guan-yu Zhou3, Chi-huan Yao3, Ding-guo Zhao1, An-rui He3 |
| 1 School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China 2 Tangshan Donghua Steel Enterprise Group Co., Ltd., Tangshan 063210, Hebei, China 3 National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
|
|
|
|
Abstract Donghua steel continuous casting–rolling (DSCCR) production line is an endless rolling production line independently integrated and developed by a Chinese enterprise. To solve the problem of out-of-control shape caused by insufficient adjustment ability of work roll bending force of DSCCR finishing mills, the backup roll contours of the finishing mill were optimized considering multi-objectives, and varying contact length backup roll (VCR) contours matching the concave work rolls were designed based on the rapid rolls–strip deformation calculation model, which integrated the elastic deformation of the rolls and the fast plastic deformation of the rolled strip. The simulation results showed that VCR configuration can significantly enhance the control efficiency of the work roll bending force and increase the transverse stiffness of rolling mill compared with the conventional roll configuration. In addition, VCR backup roll can improve the contact state between backup roll and work roll. The industrial production showed that the bending force setup value was more reasonable and the strip crown control accuracy was improved.
|
|
|
|
|
|
| Cite this article: |
|
Zhao-yang Li,Zhi Qi,Lan-tian Guo, et al. Improvement in shape control performance of finishing mills in endless rolling production line[J]. Journal of Iron and Steel Research International, 2023, 30(02): 267-276.
|
|
|
|
| [1] |
Hui Li, Guan-yu Zhou, An-rui He, Zhi-hong Zhang, Chi-huan Yao, Chao Liu, Jian-wei Zhao, Wei-gang Li, Jian Shao. Generation mechanism of quarter buckle in hot-rolled temper rolling[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2022, 29(10): 1619-1632. |
| [2] |
Hai-nan He, Jian Shao, Xiao-chen Wang, Quan Yang, Yang Liu, Dong Xu, You-zhao Sun. Research and application of approximate rectangular section control technology in hot strip mills[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(03): 279-290. |
| [3] |
Chun-yu JIA,Tao BAI,Xiu-ying SHAN,Fa-jun CUI,Sheng-jie XU. Cloud Neural Fuzzy PID Hybrid Integrated Algorithm of Flatness Control[J]. Chinese Journal of Iron and Steel, 2014, 21(6): 559-564. |
| [4] |
LIU Hong-min,,SHAN Xiu-ying,,JIA Chun-yu,. Theory-Intelligent Dynamic Matrix Model of Flatness Control for Cold Rolled Strips[J]. Chinese Journal of Iron and Steel, 2013, 20(8): 1-7. |
| [5] |
WANG Peng-fei,PENG Yan,LIU Hong-min,ZHANG Dian-hua,WANG Jun-sheng. Actuator Efficiency Adaptive Flatness Control Model and Its Application in 1250 mm Reversible Cold Strip Mill[J]. Chinese Journal of Iron and Steel, 2013, 20(6): 13-20. |
| [6] |
QI Xiang-dong,WANG Tao,XIAO Hong. Optimization of Pass Schedule in Hot Strip Rolling[J]. Chinese Journal of Iron and Steel, 2012, 19(8): 25-28. |
|
|
|
|
2023, Vol. 30 
