热连轧机组轧制过程宽展量评估技术的开发  

Development of spread evaluating technology for rolling process of hot strip mill

作　　者：张燕东 尹宝良 李子正 邝霜 王瑞 白振华 ZHANG Yandong;YIN Baoliang;LI Zizheng;KUANG Shuang;WANG Rui;BAI Zhenhua(National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao 066004,Hebei,China;Tangshan Iron and Steel Group Co.,Ltd.,Tangshan 063000,Hebei,China;State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao066004,Hebei,China)

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]唐山钢铁集团有限责任公司,河北唐山063000 [3]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《钢铁研究学报》2023年第9期1110-1118,共9页Journal of Iron and Steel Research

基　　金：河北省重大科技成果转化专项资助项目(22281001Z)。

摘　　要：针对热连轧过程中因宽展量而导致的带钢宽度控制难度大、板形质量变差及下道工序的带钢边部裁剪过多等问题,首先对宽展量模型、宽展量影响因素及其宽展量对板形的影响机制进行了简要分析。通过分析可知宽展量设定值、宽展量分配及其影响因素的优化是解决上述问题的关键。因此在对宽展模型及板形模型研究的基础上建立了带钢宽展量范围计算目标函数、优化分配目标函数及共同影响因素优化目标函数,实现了以优良出口板形为前提的带钢宽展量范围的计算、各个机架的宽展量最优设定及其影响因素的微调优化,完成了热连轧机组轧制过程宽展量评估技术的开发,将其应用到国内某热连轧机组后提高了出口带钢的宽度控制精度及带钢板形质量。In response to the difficulties in controlling strip width,deteriorating strip shape quality,and excessive cutting of strip edges in the next process caused by the spread during the hot rolling process,a brief analysis was first conducted on the spread model,the influencing factors of spread,and the mechanism by which it affects strip shape.It can be known that the setting value of the strip spread and the distribution of the strip spread between the stands and the optimization of the influencing factors of the strip spread are the keys to solve the above problems through the analysis.Therefore,the objective function for calculation the range of strip spread and the objective function for optimizing the distribution of spread and the objective function for optimizing the common influencing factors were established on the basis of the research on the strip spread model and the flatness model.Based on the premise of excellent exit shape,the calculation of the strip spread range and the optimal distribution of the spread range of each stand and the fine-tuning optimization of the influencing factors were realized.The development of the evaluation technology for the rolling process of the hot strip mill has been completed.After applying it to a domestic hot strip rolling line,the control precision of the width of the strip steel at the exit of the rolling mill and the quality of the shape are improved.

关 键 词：热连轧机组 宽展量评估 宽展量分配 影响因素优化 出口板形 

分 类 号：TF19[冶金工程—冶金物理化学]