薄带钢拉矫弯曲辊承载载荷数值分析与工艺优化  

Numerical analysis and process optimization for bending rolls' load in strip tension-leveling

作　　者：夏绪辉 王佳璇[1,2] 王蕾 张欢[1,2] XIA Xuhui;WANG Jiaxuan;WANG Lei;ZHANG Huan(Key Laboratory of Metallurgical Equipment and Control of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,湖北武汉430081

出　　处：《轧钢》2024年第1期54-60,共7页Steel Rolling

基　　金：湖北省重点研发计划项目(2020BAA024);材料成形与模具技术国家重点实验室开放课题研究基金项目(P2022-012)。

摘　　要：弯曲辊作为拉矫机的主要承载结构,其使用寿命影响拉矫机的稳定运行周期。以“两弯两矫”型拉矫机为例,建立了弯曲辊载荷模型,并对拉矫工艺进行了优化。首先,基于有限元计算建立了弯曲辊载荷响应面模型,研究了核心工艺参数对弯曲辊载荷的影响规律。其次,为了保证带钢拉矫质量,在定伸长率约束条件下,建立了两组弯曲辊载荷同时控制的多目标优化模型。最后,采用非支配排序遗传算法(NSGA-Ⅱ)进行多目标优化求解,给出了核心工艺参数的优化组合方法,实现了两组弯曲辊载荷的同步控制,有助于延长设备的整机稳定运行周期。As the key bearing structure of tension-leveler,the service life of the bending rolls is affected by the load and thus determines the operation cycle of tension-leveler.The load model is established and the optimization is carried out for the bending rolls'load of tension-leveler with two bending units and two leveling units.Firstly,the response surface for the bending rolls'load is built based on FEM calculation and core process parameters influence on the bending rolls'load is studied.Secondly,for the quality of strip,the multi-objective optimization model is established to balance the bending rolls'load,under the constraint of constant elongation.Finally,the non-dominated sorting genetic algorithm(NSGA-II)is used to solve the multi-objective optimization model,and the optimal process parameters combination is given to realize the synchronous control of the bending rolls'load,which is helpful to extend the stable operation cycle of the whole machine.

关 键 词：带钢拉矫 弯曲辊 载荷同步控制 NSGA-Ⅱ 工艺优化 降低成本 提高效率 

分 类 号：TG333.23[金属学及工艺—金属压力加工]