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Optimization of Roll Shifting Strategy of Alternately Rolling in Hot Strip Mill
Alternative TitleOptimization of Roll Shifting Strategy of Alternately Rolling in Hot Strip Mill
Li Weigang1; Guo Zhaohui2; Yi Jian2; Liu Xianghua3
2012
Source PublicationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
Volume19Issue:5Pages:37-42
AbstractAn optimization solution to roll shifting strategy for alternately rolling campaign is presented. All the strips in a rolling campaign are divided into narrow strips and wide ones, and shifting position of narrow strips is obtained by the recursive method, and then shifting position of wide strips is optimized by NSGA-II which is a multi-objective genetic algorithm. For wide strips, a multi-objective optimization model of roll shifting strategy is proposed, which takes 3 wear contour factors including edge smoothness, body smoothness and edge drop as optimization objectives. The Pareto optimal front of roll shifting strategy can be gained quickly by NSGA-II, which suggests a series of alternative solutions to roll shifting strategy. Analysis shows that the conflict exists among the 3 objectives. The final optimal solution is selected from the Pareto optimal solutions by the weighted-sum decision-making method. Industrial production proves the validity of the solution, and it can improve strip profile of alternately rolling, reduce strip edge wave, and extend the rolling miles of rolling campaigns.
Other AbstractAn optimization solution to roll shifting strategy for alternately rolling campaign is presented. All the strips in a rolling campaign are divided into narrow strips and wide ones, and shifting position of narrow strips is obtained by the recursive method, and then shifting position of wide strips is optimized by NSGA-II which is a multiobjective genetic algorithm. For wide strips, a multi-objective optimization model of roll shifting strategy is pro posed, which takes 3 wear contour factors including edge smoothness, body smoothness and edge drop as optimization objectives. The Pareto optimal front of roll shifting strategy can be gained quickly by NSGA-II, which suggests a series of alternative solutions to roll shifting strategy. Analysis shows that the conflict exists among the 3 objectives. The final optimal solution is selected from the Pareto optimal solutions by the weighted-sum decision-making method. Industrial production proves the validity of the solution, and it can improve strip profile of alternately rolling, reduce strip edge wave, and extend the rolling miles of rolling campaigns.
KeywordMULTIOBJECTIVE OPTIMIZATION ALGORITHM hot strip mill alternately rolling work roll shifting NSGA-II pareto optimal solution
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China]
CSCD IDCSCD:4538852
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/145467
Collection中国科学院金属研究所
Affiliation1.东北大学
2.Baosteel Technol Ctr, Institute Automat, Shanghai 201900, Peoples R China
3.中国科学院金属研究所
Recommended Citation
GB/T 7714
Li Weigang,Guo Zhaohui,Yi Jian,et al. Optimization of Roll Shifting Strategy of Alternately Rolling in Hot Strip Mill[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2012,19(5):37-42.
APA Li Weigang,Guo Zhaohui,Yi Jian,&Liu Xianghua.(2012).Optimization of Roll Shifting Strategy of Alternately Rolling in Hot Strip Mill.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,19(5),37-42.
MLA Li Weigang,et al."Optimization of Roll Shifting Strategy of Alternately Rolling in Hot Strip Mill".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 19.5(2012):37-42.
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