Abstract:In order to solve various flatness problems in the process of thin strip rolling,a new type of electromagnetic control rolling mill was used as the research object, and a three-dimensional thermal-mechanical coupling finite element model was established by Marc, and the bending force under the combined action of the bending roll and the electromagnetic control roll was analyzed. And the rolling force affected the roll shape state, plate shape distribution, slab edge stress, roller contact stress, and bearing roll gap shape.The results show that the application of the roll bending mechanism will directly promote the stable bulging of the electromagnetically controlled rolls,and the bulging crown of the electromagnetically controlled rolls will be compensated integrally. Based on the good shape of the plate,a reasonable bending roll for the new electromagnetically controlled rolling mill is given. Comparing the changes of roll gap functions with different bending forces and rolling forces,different secondary and fourth crowns are formed,which provides a basis for shape control and initial roll gap settings.
郑义, 杨庭松, 曲春涛, 杜凤山, 许志强. 新型电磁调控轧机弯辊辊型电磁补偿及初始辊缝[J]. 钢铁, 2021, 56(5): 80-90.
ZHENG Yi, YANG Ting-song, QU Chun-tao, DU Feng-shan, XU Zhi-qiang. Electromagnetic compensation and initial roll gap under new type of electromagnetic control rolling mill bending roll[J]. Iron and Steel, 2021, 56(5): 80-90.
[1] 魏志毅,魏维刚,尤磊,等. 六辊冷轧机工作辊正负弯辊平滑过渡系统[J]. 轧钢,2020,37(2):77.(WEI Zhi-yi,WEI Wei-gang,YOU Lei,et al. Smooth transition system for positive and negative bending of work roll of six-high cold rolling mill[J]. Steel Rolling,2020,37(2):77.) [2] 沈新玉,胡柯,李宏洲,等. UCM冷连轧机边降控制工作辊辊形优化[J]. 中国冶金,2019,29(11):55.(SHEN Xin-yu,HU Ke,LI Hong-zhou,et al. Work roll contour optimization for edge drop control based on UCM cold rolling mills[J]. China Metallurgy,2019,29(11):55.) [3] 时旭,刘相华,王国栋,等.弯辊力对带钢凸度影响的有限元分析[J].轧钢,2006,23(3):10.(SHI Xu,LIU Xiang-hua,WANG Guo-dong,et al. FEM analysis of effect of bending force on the crown of strip[J]. Steel Rolling,2006,23(3):10.) [4] 马超,张国强,赵德华,等.弯辊对带钢板形影响的模拟研究[J]. 鞍钢技术,2009(5):36.(MA Chao,ZHANG Guo-qiang,ZHAO De-hua,et al. Simulation study on effect of bending roller on strip shape[J]. Angang Technology,2009(5):36.) [5] 张志强,李宏杰,黄庆学,等. 弯辊力对带材板形影响的有限元分析[J]. 山西冶金,2012,35(2):8.(ZHANG Zhi-qiang,LI Hong-jie,HUANG Qing-xue,et al. FEM analysis of effect of bending force on the plate shape of the strip[J]. Shanxi Metallurgy,2012,35(2):8.) [6] 吴安民. 弯辊力和轧制力对辊缝形状影响分析[J]. 冶金设备,2015(4):47.(WU An-min. Impact analysis of the bending and rolling force on the shape of roll gap[J]. Metallurgical Equipment,2015(4):47.) [7] 杜凤山,冯岩峰,刘文文,等.板带精密轧制辊型电磁调控测量技术[J]. 钢铁,2017,52(11):75.(DU Feng-shan,FENG Yan-feng,LIU Wen-wen,et al. Measuring technique for roll profile electromagnetic control in precision plate rolling[J]. Iron and Steel,2017,52(11):75.) [8] 杜凤山,刘文文,冯岩峰,等. 精密轧机的辊型电磁调控工艺参数[J]. 工程科学学报,2017,39(12):1874. (DU Feng-shan,LIU Wen-wen,FENG Yan-feng,et al.Roll profile electromagnetic control process parameters in precision rolling mill[J]. Journal of University of Science and Technology Beijing,2017,39(12):1874.) [9] LIU W W,FENG Y F,SUN J N,et al.Analysis of the thermal-mechanical problem in the process of flexible roll profile electromagnetic control[J]. International Journal of Heat and Mass Transfer,2018,120:447. [10] LIU W W,FENG Y F,SUN J N,et al.Analysis of the induction heating efficiency and thermal energy conversion ability under different electromagnetic stick structures in the RPECT[J]. Applied Thermal Engineering,2018,145:277. [11] LIU W W,FENG Y F,SUN J N,et al.Theoretical and experimental research on the law of flexible roll profile electromagnetic control[J]. Journal of Materials Processing Technology,2018,262:308. [12] LIU W W,FENG Y F,YANG T S,et al.Research on flexible roll profile electromagnetic control technology in precision rolling mill[J]. Metallurgical Research and Technology,2019,116(1):101. [13] 于斌,王义栋,杨旭,等. 面向板形控制的辊型窜辊与弯辊技术应用[J]. 钢铁,2014,49(11):42.(YU Bin,WANG Yi-dong,YANG Xu,et al. Application of roll contour shifting roll and bending roll for shape control[J]. Iron and Steel,2014,49(11):42.) [14] 任新意,王松涛,高慧敏,等.冷连轧机辊型板形控制性能分析[J]. 钢铁,2018,53(3):50.(REN Xin-yi,WANG Song-tao,GAO Hui-min,et al. Analysis on shape control performance of cold tandem mill with ESS roll profile[J]. Iron and Steel,2018,53(3):50.)[15] 任新意,高慧敏,王松涛,等. 1 420 mm六辊UCM冷连轧机边部减薄特性仿真分析[J]. 重型机械,2018,345(5):39.,2018,345(5):39.) [16] 黄华贵,史英钦,任新意,等. 工作辊凸度对超宽六辊轧机板形调控性能的影响[J]. 钢铁,2014,49(7):88.(HUANG Hua-gui,SHI Ying-qin,REN Xin-yi,et al. Influence of initial crown of work roll on strip shape adjusting performance of ultra-wide 6-h CVC mill[J]. Iron and Steel,2014,49(7):88.)