Abstract
The fishtail in head and tail of the slabs was studied during V-H hot rolling process. With the application of ANSYS/LS-DYNA, simulation analysis was used to research this process. The various factors which have a great influence on fishtail shapes were analysed, such as initial width, initial thickness, radius of the edger roll and horizontal roll, edging draught, horizontal reduction rate, and friction coefficient of the surface. Then the curves that can describe the shapes were obtained. After a certain time of self-learning, the optimized curves were given out. At last, through the fitting of the simulation test results, the math models for the area of fishtail defect changing with the presented factors were received. The experimental results show that the accuracy of the prediction for the fishtail shapes is more than 95%. With the application of the prediction for the fishtail shapes and the area of the fishtail defect, the loss rate of the slab is decreased by about 0.1%.
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XIONG Shang-wu, LIU Xiang-hua, WANG Guo-dong, ZHANG Qiang. Slab edging draught technology in roughing trains of hot strip mills and methods for improvement crop loss [J]. Iron and Steel, 1994, 29(12):75–79.
KOBAYASHIC S. Metal forming and the finite-element method [J]. Oxford: Oxford University Press, 1989:83–85.
NIKAIDO H. Development of slab sizing press for heavy width reduction in hot strip mills [J]. ISIJ, 1992, 17(4):412–417.
OKADO M. Newlight on behavior of width of edge of head and tail of slabs in hot strip rolling mills [J]. ISIJ, 1981, 67(15):2516–2525.
ANJAMI N, BASTI A. Investigation of rolls size effects on hot ring rolling process by coupled thermo-mechanical 3D-FEA [J]. Journal of Materials Processing Technology, 2010, 210(10):1364–137.
JAHANGARDY Y, FOROUZAN M R, ROSTAMIPOUR M, DOLATABADI A S. Determining structural defects in hot strip rolling mills by analyzing rolling force fluctuations [J]. Steel Research International, 2012, 29(4):107–110.
CHEN S W, LIU H M, PENG Y, SUN J L. Strip layer method for simulation of the three-dimensional deformations of large cylindrical shell rolling [J]. International Journal of Mechanical Sciences, 2013, 77:113–120.
ZHANG Shun-hu, ZHAO De-wen, WANG Xiao-nan. Influence of yield-to-tensile strength ratio (YT) on failure assessment of defect-free and corroded X70 steel pipeline [J]. Journal of Central South University, 2014, 21(2):460–465.
LIU Wen-bin, KANG Yong-lin, CUI Lun-kai. Parameter optimization of short stroke control model on 2250 hot strip mill of Qian’an steel company [J]. Steel Rolling, 2010, 27(1):51–54.
LUCA G, ELISABETTA C, CLAUDIO G. Investigation of the fishtail defect in ring rolling by a FEM approach [C]// 40th Annual North American Manufacturing Research Conference, South Bend: NAMRC40, 2012: 104–111.
DU Xiao-zhong, YANG Quan, LU Cheng. Optimization of short stroke control curve in hot strip mill by FEM modeling [J]. Advanced Materials Research, 2010, 83/84/85/86:106–112.
HEO Seong-chan, SEO Young-ho, KU Tae-wan, KANG Beom-soo. A study on thick plate forming using flexible forming process and its application to a simply curved plate [J]. The International Journal of Advanced Manufacturing Technology, 2010, 51(1/2/3/4):103–115.
TAN Shu-bin, LI Long, LIU Jian-chang. Research on the gap setting model of short stroke control system in hot edge rolling [C]// Chinese Control and Decision Conference. Mianyang, Chinna, 2011:4126–4128.
FOROUZAN M D R, SALEHI I, ADIBI-SEDEH A H. A comparative study of slab deformation under heavy width reduction by sizing press and vertical rolling using FE analysis [J]. Journal of Materials Processing Technology, 2009 (209):728–736.
ZHAO De-wen, FANG Qi, LI Can-ming. Derivation of plastic specific work rate for equal area yield criterion and its application to rolling [J]. Journal of Iron and Steel Research, International, 2010, 17(4):34–28.
REN Rui, ZHANG Xiao-ping, DU Xiao-zhong. FEM simulation of the slab edge rolling in unsteady rolling stage [J]. Applied Mechanics and Materials, 2012, 152/153/154:297–300.
LIU Hua-qiang, ZHANG Fei, YIN Shi, LI Xin. Study and application of ssc model on hot rolling wide strip mill [J]. Advanced Materials Research, 2012, 572:131–136.
DU Xiao-zhong, YANG Quan, LU Cheng. Optimization of short stroke control preset for automatic width control of hot rolling mill [J]. Journal of Iron and Steel Research International, 2010, 17(6):16–20.
MEI Rui-bin, LI Chang-sheng, LIU Xiang-hua. Heat transfer coefficient prediction by FEM in the hot strip rolling [J]. Advanced Materials Research, 2012, 415/416/417:1391–1394.
WANG W, LIU X J, LIU K. FEM analysis on multibody interaction process in three body friction geometry with rough surface [J]. Tribology, 2012, 6(2):59–66.
YUAN Guo-ming, WANG Jian, XIAO Hong; LI Ming-lei. Research on online model of vertical rolling force in hot strip roughing trains [J]. Advanced Materials Research, 2011, 145:198–203.
VIMALANATHAN S, MEARS L, LI Can-ming. Finite element simulation of ring rolling process [J]. SAE International, 2010, 1:270–280.
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Foundation item: Project(N100307002) supported by the Fundamental Research Funds for the Central Universities, China; Project(61174115) supported by the National Natural Science Foundation of China
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Li, X., Wang, Hy., Ding, Jg. et al. Analysis and prediction of fishtail during V-H hot rolling process. J. Cent. South Univ. 22, 1184–1190 (2015). https://doi.org/10.1007/s11771-015-2632-5
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DOI: https://doi.org/10.1007/s11771-015-2632-5