Abstract
Leveler is widely used to improve the quality of defective mild steel plates. Its typical ranges of the leveling capacity are constrained by three criteria, namely the maximum stroke of rollers, allowable total leveling force and motor power. In this work, an optimization model with equality and inequality constraints was built for the maximum yield stress search of each thickness of plates. The corresponding search procedure with three loops was given. The approximate range by the simplification model could be used as the initial value for the actual range search of the leveling capacity. Therefore, the search speed could be accelerated compared with a global search. The consistency of the analytical results and field data demonstrates the reliability of the proposed model and procedure. The typical ranges of the leveling capacity are expressed by several boundary curves which are helpful to judge whether the incoming plate can be leveled quickly or not. Also, these curves can be used to find the maximum yield stress for a specific thickness or the maximum thickness for a yield stress for plates.
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TOMITA S, FUJITA Y. Recent trend and problems of leveling technologies of thick plates [J]. Journal of the Japan Society for Technology of Plasticity, 1999, 40: 408-411.
FISCHER F D, RAMMERSTORFER F G, FRIEDL N, WIESER W. Buckling phenomena related to rolling and levelling of sheet metal [J]. International Journal of Mechanical Sciences, 2000, 42(10): 1887-1910.
PARK K C, HWANG S M. Development of a finite element analysis program for roller leveling and application for removing blanking bow defects of thin steel sheet [J]. Iron & Steel Institute of Japan Journal, 2002, 42(9): 990-999.
HUH H, LEE H W, PARK S R, KIM G Y, NAM S H. The parametric process design of tension leveling with an elasto-plastic finite element model [J]. Journal of Materials Processing Technology, 2001, 113(1/2/3): 714-719.
BEHRENS B A, NADI T E, KRIMM R. Development of an analytical 3D-simulation model of the leveling process [J]. Journal of Materials Processing Technology, 2011, 211(6): 1060-1068.
DOEGE E, MENZ R, HUININK S. Analysis of the leveling process based upon an analytic forming model [J]. Manufacturing Technology, 2002, 51(1): 191-194.
KADOTA K, MAEDA R. A method of analysis of curvature in leveling process¡ªnumeric study of roller leveling process [J]. Journal of the Japan Society for Technology of Plasticity, 1993, 34: 481-486.
HIGO T, MATSUMOTO H, OGAWA S. Effects of numerical expression of stress-stain curve on curvature of material of roller leveling process [J]. Journal of the Japan Society for Technology of Plasticity, 2002, 43: 439-443.
XUE Jun-an, CUI Li, HU Xian-lei, LIU Xiang-hua. Effect of plastic deformation rate on plate steel during roller leveling [J]. Journal of Northeastern University, 2009, 30(5): 681-684. (in Chinese)
CUI Li, HU Xian-lei, GUO Qiang, LIU Xiang-hua. Analyzing roller leveling strategies for high-strength steel plates [J]. Journal of Northeastern University, 2011, 32(5): 671-674. (in Chinese)
LI Lin. Improvement trend and flame characteristics compound roll leveler [J]. Modern Manufacturing Technology and Equipment, 2006, 3: 39-41. (in Chinese)
XUE Jun-an, CUI Li, HU Xian-lei, LIU Xiang-hua. Development status of plate leveling technology [J]. Heavy Machinery, 2008, 2: 1-4. (in Chinese)
WANG Yu, HU Gao-ju. Technical study of wide & heavy plate straightening machine [J]. Heavy Machinery Science and Technology, 2007, 2: 4-7. (in Chinese)
GUO Tong-you, JIANG Ye-tai, LUO Zhen-wei. Constructional and technical features of hydraulic nine-roller hot plate leveler in shaogang [J]. Wide and Heavy Plate, 2007, 13(2): 45-48. (in Chinese)
WANG Xiao-gong, HUANG Qing-xue, WNAG Jian-mei. Research on leveling model of combination leveler [J]. Advanced Materials Research, 2011(145): 453-457. (in Chinese)
WANG Y Q, LIU Z H, YAN X C. Evaluation of the leveling capacity of the plate roll leveler [J]. Journal of Central South University, 2012, 19(9): 2477-2481.
LIU Z H, WANG Y Q, YAN X C. A new model for the plate leveling process based on curvature integration method [J]. International Journal of Mechanical Sciences, 2012, 54(1): 213-224.
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Liu, Zf., Luo, Yx., Yan, Xc. et al. Boundary determination of leveling capacity for plate roller leveler based on curvature integration method. J. Cent. South Univ. 22, 4608–4615 (2015). https://doi.org/10.1007/s11771-015-3011-y
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DOI: https://doi.org/10.1007/s11771-015-3011-y