UCM轧机工作辊辊形设计及应用  

Design and application of work roll profile on UCM-mill

作　　者：张建雷 陈卫 陆佳栋 岳重祥[1] ZHANG Jian-lei;CHEN Wei;LU Jia-dong;YUE Chong-xiang(Institute of Research of Iron and Steel,Jiangsu Shagang,Jiangsu Shagang Group Co.,Ltd.,Zhangjingang 215600,Jiangsu,China;Zhangjiagang Yangzi River Cold Rolled Sheet Co,,Ltd.,Jiangsu Shagang Group Co.,Ltd.,Zhangjiagang 215600,Jiangsu,China)

机构地区：[1]江苏沙钢集团有限公司江苏省沙钢钢铁研究院有限公司,江苏张家港215600 [2]江苏沙钢集团有限公司张家港扬子江冷轧板有限公司,江苏张家港215600

出　　处：《钢铁》2022年第8期123-131,共9页Iron and Steel

摘　　要：UCM轧机采用传统倒角工作辊生产硅钢时,易出现带钢边部拉紧断带问题,影响生产节奏。为解决该问题,自主设计EDC防断带工作辊辊形,通过反圆弧设计减小边部倒角变化率,均匀化带钢边部应力,保证轧机边降控制水平不降低前提下提高生产稳定性。EDC工作辊辊形曲线呈两侧对称分布,单侧包括中间平辊段、防断带控制段和跑偏控制段。由于UCM轧机不具备工作辊窜辊功能,根据产品宽度分布规律划分多个宽度区间,设计多套辊形适应不同宽度区间的轧制。采用数值模拟技术建立带钢轧制三维弹塑性有限元模型,模拟分析了传统倒角工作辊与EDC工作辊辊形的带钢边部应力情况及边降控制效果,结果表明,EDC工作辊辊形对应带钢边部应力明显减小。在相同弯辊力条件下,EDC工作辊辊形对边降改善效果更为明显,在不施加弯辊力情况下,传统倒角工作辊对应带钢边降量为15μm,EDC工作辊辊形对应带钢边降量为8μm,边降控制效果优于传统倒角工作辊。辊形参数编写到Python软件实现曲线参数高效自动化求解,能够根据现场辊形使用情况及产品边降需求调整辊形参数大小,具有一定灵活性。将EDC工作辊辊形曲线应用于某1420UCM酸连轧机组调试,现场板形正常,生产稳定,同板差不超过7μm达标率由单圆弧辊形32%提升至56%,增幅达到75%,效果提升显著。同时,机组断带率由0.1%控制到0.02%以下。When UCM mill uses conventional chamfering work roll to produce silicon steel,the strip steel has the problem of edge tension and belt breaking,which affects the production efficiency.To solve this problem,the roll profile EDC anti breaking belt is designed independently.It reduces the change rate of edge chamfer through reverse arc design and homogenizes the strip steel edge stress.It can improve the production stability on the premise of ensuring that the mill edge drop control level is not reduced.The EDC roll profile curve is symmetrically distributed on both sides,including the middle flat roll zone,anti break belt control zone and deviation control zone.Because UCM mill does not have the function of work roll shifting,this paper divides multiple width sections according to the distribution law of product width.It designs multiple sets of roll profiles to adapt to the rolling of different width sections.The three-dimensional elastic-plastic finite element model of strip rolling is established by numerical simulation technology,and the strip edge stress and edge drop control effect of EDC roll profile and conventional chamfering work roll are compared.The simulation data show that strip edge stress of EDC work roll profile is reduced.Under the same roll bending force,the improvement effect of EDC roll profile on edge drop is more obvious.Under the condition of zero bending force,the edge drop of conventional chamfering work roll is 15μm.The edge drop of EDC roll profile is 8μm.The effect of edge drop control is better than conventional chamfering work roll.The roll profile parameters are written into Python software to realize the efficient and automatic solution of curve parameters.It can adjust the roll profile parameters according to the on-site roll use and product edge drop requirements,and has a certain flexibility.The EDC roll profile curve is applied to the commissioning of a 1420 UCM coupled mill.The on-site shape is normal and the production is stable.The proportion of width thickness difference�

关 键 词：UCM轧机 辊形优化 曲线设计 Python计算 数值模拟 现场应用 

分 类 号：TG333.17[金属学及工艺—金属压力加工]