微沟槽多道次滚压工艺参数分析及优化  

Analysis and optimization of micro-groove multi-pass rolling process parameters

作　　者：王回航 高绪杰 朱光明[1] 常征[2] 郭娜娜[1] 王宗申[1] 朱立华 WANG Hui-hang;GAO Xu-jie;ZHU Guang-ming;CHANG Zheng;GUO Na-na;WANG Zong-shen;ZHU Li-hua(School of Mechanical Engineering,Shandong University of Technology,Zibo 255000,China;School of Computer Science and Technology,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255000 [2]山东理工大学计算机科学与技术学院,山东淄博255000

出　　处：《塑性工程学报》2022年第8期96-104,共9页Journal of Plasticity Engineering

基　　金：中国博士后科学基金资助项目(2018M632695);山东省自然科学基金资助项目(ZR2017BEM003,ZR2017MEE036);山东省自然科学基金面上项目(ZR2021ME222);张店区校城融合发展计划项目(2021JSCG0017)。

摘　　要：针对微沟槽多道次滚压成形工艺存在微沟槽成形高度不足、板材变形严重、轧制力过高的问题,建立了多道次滚压的有限元模型,并结合响应面法对多道次滚压的工艺参数进行了分析。以辊缝间隙Δh、滚压速度v、摩擦因数μ和辊轮直径D为设计变量,应用中心复合实验设计方法设计了响应面实验,得到孔型填充率η、板材延长长度ΔL以及轧制力F的响应面预测模型。通过分析响应面图,总结出各项工艺参数对响应值的交互影响规律,并通过多目标优化获得了最优工艺参数组合。结果表明,使用优化后的工艺参数进行滚压可使孔型填充率η达81.21%,板材延长长度降低了39.6%,轧制力降低了21.1%。Aiming at the problems of insufficient micro-groove forming height,serious deformation of sheet and excessive rolling force in the micro-groove multi-pass rolling process,the finite element model of multi-pass rolling was established,and the process parameters in multi-pass rolling was analyzed combining with the response surface method.The central composite design(CCD)method was applied to design the response surface experiment with the design variables of roll gapΔh,rolling speed v,friction coefficientμ,and roller diameter D,and the response surface prediction models of the filling rate of holeη,the extension length of sheetΔL,and the rolling force F were obtained.The interaction effect law of each process parameter on the response value was summarized by analyzing the response surface diagrams.The optimal process parameters combination was obtained by multi-objective optimization.The results show that using the optimized process parameters in rolling can make the filling rate of holeηreach 81.21%and the extension length of sheet decreases by 39.6%,and the rolling force decreases 21.1%.

关 键 词：微沟槽 减阻 多道次滚压 响应面模型 有限元模拟 

分 类 号：TG335.14[金属学及工艺—金属压力加工]