热连轧机弯辊力优化设定策略研究及应用  

Research and application of optimal strategy for setting bending force in hot strip mills

作　　者：谢向群[1] 李维刚[2,3] 卞皓[1] 付文鹏[1] Xie Xiangqun Li Weigang Bian Hao Fu Wenpeng(Hot Rolling Plant, Shanghai Meishan Iron and Steel Co. , Ltd. , Nanjing 210039, China College of Information Science and Engineering,Wuhan University of Science and Technology, Wuhan 430081, China H ubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology,Wuhan 430065, China)

机构地区：[1]上海梅山钢铁股份有限公司热轧厂,江苏南京210039 [2]武汉科技大学信息科学与工程学院,湖北武汉430081 [3]武汉科技大学冶金工业过程系统科学湖北省重点实验室,湖北武汉430065

出　　处：《武汉科技大学学报》2016年第6期416-420,共5页Journal of Wuhan University of Science and Technology

基　　金：湖北省教育厅科学技术研究计划重点项目(D20161103);武汉市青年科技晨光计划资助项目(2016070204010099);武汉科技大学冶金工业过程系统科学湖北省重点实验室开放基金资助项目(Z201501)

摘　　要：针对传统热轧机板形设定模型仅根据带钢头部的要求来设定弯辊力而可能导致中尾部所需弯辊力超出设备能力极限的问题,提出一种弯辊力优化设定策略。该策略对带钢全长轧制过程进行考虑,根据最近一次同钢种同规格带钢轧制时实际轧制力与凸度的变化,预算本卷带钢全长板形控制所需要的弯辊力调节量,结合弯辊设备的能力极限,为带钢中尾部板形控制预留必要的弯辊力。在上海梅山钢铁股份有限公司热轧厂1780热连轧生产线上的实际应用效果表明,采用该策略后基本消除了带钢尾部中间轧破现象,大幅提高了热轧带钢中尾部轧制的稳定性。In view of the fact that the traditional model for setting hot rolling strip shape sets the ben- ding force based on the strip head requirements alone and consequently the bending force needed by the strip middle and tail cannot be satisfied by the equipment in the full length rolling process, a new strategy for optimally setting the bending force in hot strip mills was proposed. It considers the full length rolling process and, according to the change of the actual convexity and rolling force in the lat- est rolling of strip of the same grade and specifications, predicts the amount of roll bending force ad- justment required by full length shape control. In light of the bending limit of the rolling equipment, it reserves the needed roll bending force for the shape control of the strip middle and tail. Successfully applied to the 1780 mm hot strip mill in Meisteel, the new strategy is found to have basically elimina- ted the breaking phenomenon in the strip tail and greatly improved the hot rolling stability of the strip middle and tail.

关 键 词：热连轧机 带钢 板形控制 弯辊力 凸度 优化设定 

分 类 号：TG335.1[金属学及工艺—金属压力加工]