摘要
冷连轧UCM机组通常采用S1/S2机架工作辊边部辊形设计提升轧机边降控制能力,从而改善硅钢横向厚差。然而UCM机组无工作辊窜辊功能,边降控制能力有限。为进一步提升轧机边降控制水平,将工作辊边部辊形设计应用至下游机架,同时要确保成品板形质量。结合金属横向流动规律对多机架辊形控制进行了研究,设计出“S1/S2双锥度辊形+S3/S4八次多项式辊形”组合。借助数值模拟技术建立关于无取向硅钢冷连轧的三维弹塑性有限元模型,模拟结果表明“双锥度辊形+八次多项式辊形”组合的边降及板形综合评价指标优于其他组合。将该辊形组合应用于工业现场试制,现场数据表明成品板形正常,同时调试卷横向厚差均值由6.4μm减小至5.9μm,横向厚差不大于7μm达标率由73%提升至82%,进一步验证了该组合可在稳定生产基础上进一步提升冷轧机边降控制能力。
The edge roll profile design of S1/S2 stand work roll is usually adopted in the UCM unit of tandem cold rolling to improve the edge drop control ability of the rolling mill,thus improving the silicon steel cross-section thickness difference.However,UCM unit has no work roll shifting function,and its edge drop control capability is limited.In order to further improve the edge drop control level of rolling mill,the design of work roll edge roll profile shall be applied to the downstream stand,and the plate shape quality shall be ensured at the same time.The control for multi stand roll profile was studied based on the metal transverse flow,and the combination scheme of"S1/S2 double taper roll profile and S3/S4 octave polynomial roll profile"was designed.A three-dimensional elastic-plastic model of silicon steel cold rolling was established by using numerical simulation technology.The simulation results show that the shape and edge drop comprehensive evaluation index of the“double taper roll profile and octave polynomial roll profile”is better than that of other combinations.The roll profile combination scheme was applied to the production site.The field data show that the plate shape is normal,and the transverse thickness difference is 6.4μm reduced to 5.9μm.The proportion of transverse thickness difference less than 7μm is increased from 73%to 82%.It is further verified that the combination can further improved the edge drop control capability of the cold rolling mill on the basis of stable production.
作者
张建雷
岳重祥
毛观伟
郝熙娟
ZHANG Jianlei;YUE Chongxiang;MAO Guanwei;HAO Xijuan(Institute of Research of Iron and Steel,Jiangsu Shagang Group Co.,Ltd.,Zhangjiagang 215600,Jiangsu,China;Zhangjiagang Yangzi River Cold Rolled Sheet Co.,Ltd.,Jiangsu Shagang Group Co.,Ltd.,Zhangjiagang 215600,Jiangsu,China)
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2023年第11期1375-1383,共9页
Journal of Iron and Steel Research
关键词
硅钢横向厚差
辊形设计
数值模拟
现场应用
silicon steel cross-section thickness difference
roll profile curve design
numerical simulation
field application
