板料误差对辊式矫直过程的影响  

Effects of plate error on roll straightening process

作　　者：郝建军[1] 朱晓宇 成子兴 HAO Jian-jun;ZHU Xiao-yu;CHENG Zi-xing(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Engineering Research Center Heavy Machinery Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]太原科技大学重型机械教育部工程研究中心,山西太原030024

出　　处：《塑性工程学报》2022年第4期70-74,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51675362)。

摘　　要：通过建立曲率积分的计算模型,计算了3 mm厚板材在11辊矫直过程中的矫直过程曲率和残余曲率的变化,根据国家标准规定的厚度、杨氏模量和屈服强度的误差进行了塑性变形率与残余曲率的对比分析,并通过实验室11辊辊式矫直机和ABAQUS有限元分析进行验证。结果表明:在相同的矫直压下量下,随着板材厚度的增加,板材的塑性变形率逐步增加,残余曲率由反弯曲到正弯曲;残余曲率随杨氏模量的增加而减小,随屈服强度增加而增大;实验和模拟与计算下的矫直力相对误差在6%以内,模拟轨迹与曲率积分模型轨迹比较吻合。The changes of curvature and residual curvature of sheets with thickness of 3 mm during 11-roll straightening process were calculated by establishing the calculation model of curvature integral,and the comparative analysis of the plastic deformation rate and residual curvature ratio was performed according to the error range of thickness,Young′s modulus and yield strength specified in national standards,and the verification was carried out by laboratory 11-roll straightening machine and ABAQUS finite element analysis.The results show that the plastic deformation rate of sheets gradually increases with the increase of sheet thickness,and the residual curvature changes from reverse bending to forward bending with the same straightening pressure;the residual curvature decreases with the increase of Young′s modulus and increases with the increase of yield strength.The relative error of straightening force under experimental and simulated calculation is within 6%,and the simulated trajectory matches well with that of the curvature integral model.

关 键 词：曲率积分 板厚 残余曲率 辊式矫直 

分 类 号：TG333.23[金属学及工艺—金属压力加工]