中国机械工程2025，Vol.36Issue(5)：1094-1102,1131,10.DOI:10.3969/j.issn.1004-132X.2025.05.021
分区差异润滑对5A02铝合金三通管成形质量的影响
Influences of Differential Lubrication on Forming Quality for 5A02 Aluminum Alloy T-shape Tubes
摘要
Abstract
In order to improve the forming quality of T-shape tubes,a method of differential lu-brication was proposed by using hydroforming.The advantages of differential lubrication were verified by finite element simulation compared with traditional lubrication.Based on the fluidity of materials,the tensile stress and compressive stress of axial and circumferential elements of T-shape tubes were extracted during deformation.The influences of the area of the differential lubrication zones on the forming quality were analyzed.The results show that compared with the traditional lubrication meth-od,the differential lubrication may effectively reduce the wall thickness thinning rate of the sides and tops of the T-shape tubes.Differential lubrication also may reduce the amount of side feed to reduce the risk of wrinkling.With the increasing of lubrication area in the bulging zones,the axial tensile stress of the arm element is gradually reduced,and the thinning rate of the arm sides of the T-shape tubes is reduced.With the increasing of the artificial roughing areas in the non-bulging zones,the axial compressive stress of the T-shape tubes sidewall element decreases,but the circumferential tensile stress increases gradually,and the material is more likely to flow to the transition zone of T-shape tubes,avoiding material accumulation in the middle of the tubes,thus reducing the risk of wrinkling.The re-search may provide technical support and theoretical reference for the forming of T-shape tubes.关键词
三通管/分区差异润滑/液压成形/壁厚分布Key words
T-shape tube/differential lubrication/hydroforming/thickness distribution分类
矿业与冶金引用本文复制引用
徐勇,张驰,解文龙,夏亮亮,杨宝成,张士宏,黄新越,王晟诚..分区差异润滑对5A02铝合金三通管成形质量的影响[J].中国机械工程,2025,36(5):1094-1102,1131,10.基金项目
国家自然科学基金(52405439) （52405439）
中国博士后科学基金(2024M763339) （2024M763339）
沈阳市科技计划(22-301-1-10) （22-301-1-10）
