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《Iron & Steel》 2013-01
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Research and Application of One Set Roll Contour Configuration Technology on Finishing Train of Hot Strip Mill

WANG Xiao-dong1,LI Fei1,WANG Qiu-na2,LI Ben-hai1,LI Bin2(1.Shougang Research Institute of Technology,Shougang Group,Beijing 100043,China;2.Qian'an Iron and Steel Company of Shougang Group,Qian'an 064404,Hebei,China)  
To realize the high precision control of hot rolled strip,in accordance with the characteristics of finishing train of hot strip mill: crown is controlled in the upper stream stands and flatness is realized in the down stream stands,one set roll contour configuration technology was developed and applied in 1580 mm hot strip mill of Qian'an Iron and Steel Company of Shougang Group.Negative crown contour was employed on work rolls of F1 stand to enhance the alignment during the rolling.CVC(Continuous Variable Crown) with lower thrust force was employed on work rolls from F2 to F4 to carry out the crown control function.Negative crown contour was adopted on work rolls of down stream stands F5 to F7 to control the flatness quality with a combination with the cyclic long stroke work roll shifting for the roll wear dispersing.VCR(Variable Crown Back-up Roll) contour was employed on all back-up rolls of the finishing mill to increase the cross rigidity of roll stack.After this roll contour configuration technology was utilized,strip shape control with a high accuracy of more than 95% and schedule-free rolling within a certain range have been realized,meanwhile the rolling stability and the length of rolling campaign have been improved and increased,respectively.
【CateGory Index】: TG335.1
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【Citations】
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