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≤7μm is increased from 32%to 56%,with an increase of 75%.The effect is significantly improved.The belt breaking rate of the mill is controlled from 0.1%to less than 0.02%.
作者
张建雷
陈卫
陆佳栋
岳重祥
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)
出处
《钢铁》
CAS
CSCD
北大核心
2022年第8期123-131,共9页
Iron and Steel
作者简介
张建雷(1994-),男,硕士,助理研究员,E-mall:zhangjianlei2016@163.com;通讯作者:岳重祥(1982-),男,博士,研究员,正高级工程师,张家港市引进紧缺高层次人才、姑苏重点产业紧缺人才,任江苏省(沙钢)钢铁研究院冷轧研究室副经理兼沙钢冷轧厂轧钢副总工程师,兼职中国金属学会电工钢分会委员。长期从事高端冷轧产品的研发与工艺优化,已发表学术论文50余篇,申请国家专利50余项,已授权30项。作为项目负责人承担酸洗、热镀锌、硅钢、普板、电镀锡五大系列30余个钢铁新品种的研发。所开发的新型微合金化免平整酸洗板、食品级电镀锡板、高品质无取向硅钢、无铬环保型镀锌板通过江苏省新品鉴定。获省部级奖励两项,中国机械工程学会优秀论文奖,被评为江苏沙钢集团劳动模范、江苏沙钢集团有限公司劳动模范、江苏沙铜集团有限公司优秀共产党员等。E-mail:chongxiang39@163.com。
