工程科学学报，第39卷，第2期：294-300.2017年2月 Chinese Journal of Engineering,Vol.39,No.2:294-300,February 2017 D0L:10.13374/j.issn2095-9389.2017.02.018;htp:/journals..usth.edu.cn 粗轧板坯镰刀弯控制模型的研究与应用 王海玉)区，杨荃2)，王晓晨) 1)北京首钢自动化信息技术有限公司自动化研究所，北京1000412)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 ☒通信作者，E-mail:wanghaiyu813@163.com 摘要针对经常困扰热轧生产的粗轧板坯镰刀弯缺陷，本文结合弹跳方程和解析法，分析了引起板坯镰刀弯的主要因 素一轧机两侧纵向刚度偏差、来料楔形及轧件运行走偏，分别计算了其对应的调整量，建立了基于轧机两侧轧制力差的镰 刀弯调平控制模型.该模型可反映轧机两侧纵向刚度差、来料楔形及轧件运行走偏等主要因素与镰刀弯的定量关系，进而计 算出控制镰刀弯的粗轧机各道次辊缝倾斜调整值.与现场实测值进行离线验证对比，实测值与计算值比值平均为0.977，结 果表明镰刀弯调平模型能够预估板坯各道次辊缝倾斜调整值.将模型投人2250mm热轧机组使用后，板坯镰刀弯弯曲量未 达标率从24.88%下降到6.62%，提高了镰刀弯控制效果，使粗轧板坯镰刀弯问题得到了很大缓解 关键词粗轧；板坯；镰刀弯：走偏；楔形 分类号TG335.5 Study and application of the slab camber control model in rough rolling WANG Hai-yu YANG Quan?),WANG Xiao-chen?) 1)Automation Research Institute,Beijing Shougang Automation Information Technology Co.Ld.,Beijing 100041,China 2)National Engineering Research Center of Flat Rolling Equipment,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:wanghaiyu813@163.com ABSTRACT Aimed at the frequently occurred problem of slab camber in rough rolling of hot strip mills,the main factors causing slab camber,including the difference in longitudinal stiffness of the mill on both sides,incoming wedge and running deviation of rolled pieces,were analyzed by combining with the spring equations and analytical method in this paper,and the corresponding adjustment values were respectively calculated.Based on rolling force difference on both sides,the tilting control model of slab camber was estab- lished.This model could reflect the quantitative relationship between the main factors and camber,such as the difference in longitudi- nal stiffness of the mill on both sides,incoming wedge and running deviation of rolled pieces,ete.,and then the tilting values of roll gap for controlling camber were calculated in each pass of the rough rolling mill.Comparing with the real values by off-line verifica- tion,the averaged ratio of measured and calculated values is 0.977.The results show that the tilting values of roll gap can be esti- mated by the tilting control model of slab camber in each pass.Since putting the model into a 2250 mm hot strip mill,the camber val- ues not complying with tolerance declined from 24.88%to 6.62%.By improving the control effect of camber,the slab camber prob- lem has been greatly eased. KEY WORDS rough rolling;slabs;camber;deviation;wedge 镰刀弯是困扰热轧生产的难点问题.产生镰刀弯 坊和轴承座间隙过大)-).板坯镰刀弯现象易使精出 现象的原因可以归结为两部分：轧件因素（来料楔形、 口带钢产生楔形，甚至引起生产出现甩尾、堆钢等事 两侧温度不均、走偏)和轧机因素（两侧刚度差异、牌 故，严重影响产品质量和正常生产.目前，粗轧板坯镰 收稿日期：2016-06-06 基金项目：国家“十二五”科技支撑计划资助项目(2015BAF30B01):国家自然科学基金资助项目(51304017)工程科学学报,第 39 卷,第 2 期:294鄄鄄300,2017 年 2 月 Chinese Journal of Engineering, Vol. 39, No. 2: 294鄄鄄300, February 2017 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2017. 02. 018; http: / / journals. ustb. edu. cn 粗轧板坯镰刀弯控制模型的研究与应用 王海玉1) 苣 , 杨 荃2) , 王晓晨2) 1)北京首钢自动化信息技术有限公司自动化研究所, 北京 100041 2)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 苣 通信作者, E鄄mail:wanghaiyu813@ 163. com 摘 要 针对经常困扰热轧生产的粗轧板坯镰刀弯缺陷,本文结合弹跳方程和解析法,分析了引起板坯镰刀弯的主要因 素———轧机两侧纵向刚度偏差、来料楔形及轧件运行走偏,分别计算了其对应的调整量,建立了基于轧机两侧轧制力差的镰 刀弯调平控制模型. 该模型可反映轧机两侧纵向刚度差、来料楔形及轧件运行走偏等主要因素与镰刀弯的定量关系,进而计 算出控制镰刀弯的粗轧机各道次辊缝倾斜调整值. 与现场实测值进行离线验证对比,实测值与计算值比值平均为 0郾 977,结 果表明镰刀弯调平模型能够预估板坯各道次辊缝倾斜调整值. 将模型投入 2250 mm 热轧机组使用后,板坯镰刀弯弯曲量未 达标率从 24郾 88% 下降到 6郾 62% ,提高了镰刀弯控制效果,使粗轧板坯镰刀弯问题得到了很大缓解. 关键词 粗轧; 板坯; 镰刀弯; 走偏; 楔形 分类号 TG335郾 5 Study and application of the slab camber control model in rough rolling WANG Hai鄄yu 1) 苣 , YANG Quan 2) , WANG Xiao鄄chen 2) 1) Automation Research Institute, Beijing Shougang Automation Information Technology Co. Ltd. , Beijing 100041, China 2) National Engineering Research Center of Flat Rolling Equipment, University of Science and Technology Beijing, Beijing 100083, China 苣 Corresponding author, E鄄mail: wanghaiyu813@ 163. com ABSTRACT Aimed at the frequently occurred problem of slab camber in rough rolling of hot strip mills, the main factors causing slab camber, including the difference in longitudinal stiffness of the mill on both sides, incoming wedge and running deviation of rolled pieces, were analyzed by combining with the spring equations and analytical method in this paper, and the corresponding adjustment values were respectively calculated. Based on rolling force difference on both sides, the tilting control model of slab camber was estab鄄 lished. This model could reflect the quantitative relationship between the main factors and camber, such as the difference in longitudi鄄 nal stiffness of the mill on both sides, incoming wedge and running deviation of rolled pieces, etc. , and then the tilting values of roll gap for controlling camber were calculated in each pass of the rough rolling mill. Comparing with the real values by off鄄line verifica鄄 tion, the averaged ratio of measured and calculated values is 0郾 977. The results show that the tilting values of roll gap can be esti鄄 mated by the tilting control model of slab camber in each pass. Since putting the model into a 2250 mm hot strip mill, the camber val鄄 ues not complying with tolerance declined from 24郾 88% to 6郾 62% . By improving the control effect of camber, the slab camber prob鄄 lem has been greatly eased. KEY WORDS rough rolling; slabs; camber; deviation; wedge 收稿日期: 2016鄄鄄06鄄鄄06 基金项目: 国家“十二五冶科技支撑计划资助项目(2015BAF30B01); 国家自然科学基金资助项目(51304017) 镰刀弯是困扰热轧生产的难点问题. 产生镰刀弯 现象的原因可以归结为两部分:轧件因素(来料楔形、 两侧温度不均、走偏)和轧机因素(两侧刚度差异、牌 坊和轴承座间隙过大) [1鄄鄄2] . 板坯镰刀弯现象易使精出 口带钢产生楔形,甚至引起生产出现甩尾、堆钢等事 故,严重影响产品质量和正常生产. 目前,粗轧板坯镰