六辊UCM可逆冷轧机带钢断面形状精细控制技术
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摘要
针对六辊UCM可逆冷轧机的断面形状控制问题,首先通过模拟计算揭示冷轧带钢的变形机理,分析中间辊窜辊、工作辊弯辊、中间辊弯辊3种调控手段对带钢断面形状与平直度的控制效果,指出3种调控手段的局限性;然后分析了工作辊辊型对带钢断面形状与平直度的控制效果,得到辊型设计的基本原则;进而提出一套适用于UCM可逆冷轧机的"辊型精细优化+目标平直度调整"的断面形状控制技术方案,最终提高了冷轧边缘降控制效果。将上述技术方案应用于3套1 420 mm UCM可逆冷轧机,硅钢横向同板差显著减小,为同类轧机断面形状控制提供了有益参考。
Aiming at the profile control of the cold rolled strip in the 6-high reversible universal crown mill(UCM),the deformation mechanism of cold rolled strip was revealed by simulation calculation. The control effects of the intermediate roll shifting and bending and the work roll bending on the profile and the flatness were analyzed,and limitations of these control methods were noted. Then,the control effects of the work roll contour on the profile and the flatness were analyzed,and the design principles of work roll contours were obtained. On the basis of this,a technical scheme named "fine optimization of roll contours+ adjustment of flatness target " was proposed for the reversible UCM,which finally improved the control effect for the strip edge drop. The technical scheme was applied to three sets of 1 420 mm reversible cold rolling UCM,and the transverse thickness difference of the silicon steel was significantly reduced,which provided a useful reference for profile control methods of similar rolling mills.
Aiming at the profile control of the cold rolled strip in the 6-high reversible universal crown mill(UCM),the deformation mechanism of cold rolled strip was revealed by simulation calculation. The control effects of the intermediate roll shifting and bending and the work roll bending on the profile and the flatness were analyzed,and limitations of these control methods were noted. Then,the control effects of the work roll contour on the profile and the flatness were analyzed,and the design principles of work roll contours were obtained. On the basis of this,a technical scheme named "fine optimization of roll contours+ adjustment of flatness target " was proposed for the reversible UCM,which finally improved the control effect for the strip edge drop. The technical scheme was applied to three sets of 1 420 mm reversible cold rolling UCM,and the transverse thickness difference of the silicon steel was significantly reduced,which provided a useful reference for profile control methods of similar rolling mills.
引文
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[19]李广林,陈伟,刘玉金,等.热轧原料断面轮廓对冷轧硅钢尺寸精度的影响分析[J].钢铁研究学报,2014,26(1):33.(LI Guang-lin,CHEN Wei,LIU Yu-jin,et al. Impact analysis for section profile of hot-rolled raw materials to dimensional accuracy of cold-rolled silicon steel[J]. Journal of Iron and Steel Research,2014,26(1):33.)
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[23]刘宏民,丁开荣,李兴东,等.板形标准曲线的理论计算方法[J].机械工程学报,2008,44(8):137.(LIU Hong-min,DING Kai-rong,LI Xing-dong,et al. Theoretical computational method of shape standard curve[J]. Journal of Mechanical Engineering,2008,44(8):137.)
[2] XIE Shi-shu,CHEN Xiao,ZHANG Pi-jun,et al. Development of top high-grade non-grain-oriented silicon steels at Baosteel[J]. Baosteel Technical Research,2013,7(1):3.
[3]杨华国.高牌号硅钢冷轧机选型的研究[J].上海金属,2007,29(5):105.(YANG Hua-guo. Selection of cold rolling mill for high grade silicon steel[J]. Shanghai Metals,2007,29(5):105.)
[4]王罕.高强钢轧制特点分析[J].装备维修技术,2014(3):35.(WANG Han. The rolling characteristics of high strength steel analysis[J]. Equipment Technology,2014(3):35.)
[5]张凤泉,刘本仁.提高冷轧硅钢片成材率板形质量和横向厚度精度的分析[J].钢铁研究,2005,33(4):40.(ZHANG Fengquan,LIU Ben-ren. Analysis on increasing the rolling yield,strip shape quality and traverse thickness accuracy of finished silicon sheet[J]. Research on Iron and Steel,2005,33(4):40.)
[6] WANG Xiao-chen,YANG Quan,SUN You-zhao. Rectangular section control technology for silicon steel rolling[J]. Journal of Iron and Steel Research,International,2015,22(3):185.
[7]周晓敏,张清东,王长松,等. UCMW轧机的边缘降自动控制系统及其优化[J].钢铁,2007,42(9):56.(ZHOU Xiao-min,ZHANG Qing-dong,WANG Chang-song,et al. Automative edge drop control system of UCMW cold mill and its optimization[J]. Iron and Steel,2007,42(9):56.)
[8]徐乐江.板带冷轧机板形控制与机型选择[M].北京:冶金工业出版社,2007.(XU Le-jiang. Flatness Control in Cold Strip Rolling and Mill Type Selection[M]. Beijing:Metallurgical Industry Press,2007.)
[9]李志勇,朱简如,叶学卫.酸轧机组新型边缘降控制系统的开发[J].宝钢技术,2006(5):40.(LI Zhi-yong,ZHU Jian-ru,YE Xue-wei. Development of a new edge drop control system for the PL-TCM[J]. Baosteel Technology,2006(5):40.)
[10]胡强,王晓晨,杨荃.六辊冷连轧机边降自动控制系统设计及应用[J].冶金自动化,2016,40(1):34.(HU Qiang,WANG Xiao-chen,YANG Quan. Design and application of automatic edge drop control system for 6-high tandem cold rolling mill[J]. Metallurgical Industry Automation,2016,40(1):34.)
[11]王康健,徐江华,李山青.宝钢冷连轧机边缘降自动控制系统[C]//全国轧钢生产技术会论文集.宁波:中国金属学会,2012:1016.(WANG Kang-jian,XU Jiang-hua,LI Shan-qing. Automatic edge drop control system of Baosteel[C]//Proceedings of the National Steel Rolling Technology Association. Ningbo:The Chinese Society for Metals,2012:1016.)
[12]张清东,张晓峰,文杰.薄带钢冷连轧横向厚差控制理论及DI材横向厚度控制技术研究[J].机械工程学报,2013,49(24):30.(ZHANG Qing-dong,ZHANG Xiao-feng,WEN Jie. Theory and technology of transverse thickness deviation control for DI tinplate during tandem cold rolling[J]. Journal of Mechanical Engineering,2013,49(24):30.)
[13]孙文权,杨荃,邵健,等. UCM冷连轧机硅钢边降控制技术[J].北京科技大学学报,2010,32(10):1340.(SUN Wen-quan,YANG Quan,SHAO Jian,et al. Edge drop control technique of silicon steel for UCM tandem cold rolling mills[J]. Journal of University of Science and Technology Beijing,2010,32(10):1340.)
[14]何安瑞,邵健,孙文权,等.冷轧无取向硅钢横向厚差控制[J].机械工程学报,2011,47(10):25.(HE An-rui,SHAO Jian,SUN Wen-quan,et al. Transverse thickness deviation control of non-oriented silicon steel during cold rolling[J]. Journal of Mechanical Engineering,2011,47(10):25.)
[15]王东城,赵章献,刘宏民.冷轧带钢板形高效分析与设定软件及其应用[J].钢铁,2015,50(7):54.(WANG Dong-cheng,ZHAO Zhang-xian,LIU Hong-min. High-efficiency software and its application for shape analysis and presetting of cold rolling strip[J]. Iron and Steel,2015,50(7):54.)
[16]王东城,吴燕林,刘宏民.四辊轧机辊系弹性变形高效计算方法[J].钢铁,2015,50(11):69.(WANG Dong-cheng,WU Yanlin,LIU Hong-min. High-efficiency calculation method for roll stack elastic deformation of four-high mill[J]. Iron and Steel,2015,50(11):69.)
[17] WANG Dong-cheng,LIU Hong-min. A model coupling method for shape prediction[J]. Journal of Iron and Steel Research,International,2012,19(2):22.
[18]刘宝军,朱简如,曹强,等.基于中间辊辊形优化的冷连轧机同板差控制技术[J].宝钢技术,2015(2):59.(LIU Bao-jun,ZHU Jian-ru,CAO Qiang,et al. Control technology of transverse thickness in tandem cold rolling mill based on optimum design on profile of intermediate roll[J]. Baosteel Technology,2015(2):59.)
[19]李广林,陈伟,刘玉金,等.热轧原料断面轮廓对冷轧硅钢尺寸精度的影响分析[J].钢铁研究学报,2014,26(1):33.(LI Guang-lin,CHEN Wei,LIU Yu-jin,et al. Impact analysis for section profile of hot-rolled raw materials to dimensional accuracy of cold-rolled silicon steel[J]. Journal of Iron and Steel Research,2014,26(1):33.)
[20]镰田正诚.板带连续轧制[M].李伏桃,译.北京:冶金工业出版社,2002.(Kamata Masamoto. Tandem Rolling for Plate and Strip[M]. LI Fu-tao,translated. Beijing:Metallurgical Industry Press,2002.)
[21] WANG Xiao-chen,YANG Quan,JIANG Zheng-yi,et al. Research on the improvement effect of high tension on flatness deviation in clod strip rolling[J]. Steel Research International,2014,85(11):1560.
[22]连家创,刘宏民.板厚板形控制[M].北京:兵器工业出版社,1996.(LIAN Jia-chuang,LIU Hong-min. Thickness Control and Shape Control[M]. Beijing:Weapons Industry Press,1996.)
[23]刘宏民,丁开荣,李兴东,等.板形标准曲线的理论计算方法[J].机械工程学报,2008,44(8):137.(LIU Hong-min,DING Kai-rong,LI Xing-dong,et al. Theoretical computational method of shape standard curve[J]. Journal of Mechanical Engineering,2008,44(8):137.)