基于极限静摩擦力矩的轧机打滑预测模型  

Rolling mill slip prediction model based on limit static friction torque

作　　者：施剑睿 孙文权[1,2] 陈禄祯 袁铁衡 张喜榜 李立刚[1,3] SHI Jian-rui;SUN Wen-quan;CHEN Lu-zhen;YUAN Tie-heng;ZHANG Xi-bang;LI Li-gang(National Engineering Technology Research Center of Flat Rolling Equipment,University of Science and Technology Beijing,Beijing 100083,China;National Engineering Research Center for Advanced Rolling Technology,University of Science and Technology Beijing,Beijing 100083,China;Design and Research Institute Co.,Ltd.,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学国家板带生产先进装备工程技术研究中心,北京100083 [2]北京科技大学高效轧制国家工程研究中心,北京100083 [3]北京科技大学设计研究院有限公司,北京100083

出　　处：《钢铁》2021年第9期96-101,共6页Iron and Steel

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-NP-19-006)。

摘　　要：冷连轧轧制过程中,当轧制转矩大于轧辊与轧件间的极限静摩擦力矩时,轧辊与轧件之间将出现相对滑动,从而导致打滑的发生。为减少因打滑导致的冷轧带钢带钢表面缺陷,以板带轧制塑性变形基本公式为基础,将前滑区与后滑区的单位轧制力分布做线性简化,继而推导出极限静摩擦力矩模型。并以实测数据验证该模型的准确性,且从轧制转矩与极限静摩擦力矩差值的变化趋势中发现,随着轧制公里数的增加,差值有逐渐减小到零的趋势。同时利用差值小于设定阈值的方式来判定工作辊是否发生打滑,并应用于现场在线打滑预警系统中。实践证明,该模型对冷连轧工作辊打滑判定具有重要意义。In the process of cold continuous rolling,when the rolling torque is greater than the limit static friction torque between the roll and the rolled piece,the relative sliding will occur between the roll and the rolled piece,which will lead to the occurrence of sliding.For reducing the surface defect caused by slip,based on the basic formula of the plastic deformation in strip rolling,the unit rolling force distribution in the forward and backward sliding regions is simplified linearly,and then the ultimate static friction torque model is derived.The accuracy of the model is verified by the measured data.From the changing trend of the difference between rolling torque and ultimate static friction torque,it is found that the difference value gradually decreases to zero with the increase of rolling kilometers.At the same time,the method that the difference value is less than the set threshold is used to determine whether the work roll is slipping or not.It has been proved that the model is of great practical significance for the judgment of the work roll slippage in the tandem cold rolling.

关 键 词：冷轧 极限静摩擦力矩 轧制转矩 打滑 表面缺陷 

分 类 号：TG333[金属学及工艺—金属压力加工]