NDLI: Preset model of bending force for 6-high reversing cold rolling mill based on genetic algorithm

Content Provider	Springer Nature Link
Author	Cao, Jian guo Xu, Xiao zhao Zhang, Jie Song, Mu qing Gong, Gui liang Zeng, Wei
Copyright Year	2011
Abstract	The hydraulic roll-bending device was studied, which was widely used in modern cold rolling mills to regulate the strip flatness. The loaded roll gap crown mathematic model and the strip crown mathematic model of the reversing cold rolling process were established, and the deformation model of roll stack system of the 6-high 1 250 mm high crown (HC) reversing cold rolling mill was built by slit beam method. The simulation results show that, the quadratic component of strip crown decreases nearly linearly with the increase of the work roll bending force, when the shifting value of intermediate roll is determined by the rolling process. From the first pass to the fifth pass of reversing rolling process, the crown controllability of bending force is gradually weakened. Base on analyzing the relationship among the main factors associated with roll-bending force in reversing multi-pass rolling, such as strip width and rolling force, a preset mathematic model of bending force is developed by genetic algorithm. The simulation data demonstrate that the relative deviation of flatness criterions in each rolling pass is improved significantly and the mean relative deviation of all five passes is decreased from 25.1% to 1.7%. The model can keep good shape in multi-pass reversing cold rolling process with the high prediction accuracy and can be used to guide the production process.
Starting Page	1487
Ending Page	1492
Page Count	6
File Format	PDF
ISSN	10059784
Journal	Journal of Central South University of Technology
Volume Number	18
Issue Number	5
e-ISSN	19930666
Language	English
Publisher	Central South University
Publisher Date	2011-10-05
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	cold rolling mill strip bending force mathematic model genetic algorithm Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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