航空薄壁管件三辊斜轧减径段壁厚变化规律  

Variation of wall thickness in reducing section of aeronautical thin-walled tube in three-roll skew rolling

作　　者：叶博海 束学道[1,2] 夏迎香 YE Bohai;SHU Xuedao;XIA Yingxiang(Faculty of Mechanical Engineering&Mechanics,Ningbo 315211,China;Zhejiang Provincial Key Laboratory of Part Rolling Technology,Ningbo 315211,China)

机构地区：[1]宁波大学机械工程与力学学院,浙江宁波315211 [2]浙江省零件轧制成形技术研究重点实验室,浙江宁波315211

出　　处：《宁波大学学报（理工版）》2022年第1期57-62,共6页Journal of Ningbo University：Natural Science and Engineering Edition

基　　金：国家自然科学基金(51975301);北仑区科技创新团队(2020BL0003)。

摘　　要：创新三辊斜轧工艺可实现薄壁管件减径增厚.利用刚塑性有限元方法,以5056铝合金薄壁管件为研究对象,对薄壁管件三辊斜轧进行数值模拟,探究薄壁管件坯料端部壁厚对力能参数与壁厚增厚效果的影响.研究表明,增厚段壁厚越大,轴向轧制力越大,不利于薄壁管件的增厚;选择坯料端部壁厚为2.5 mm,成形增厚效果较好,符合增厚段成形后壁厚要求.The innovative three-roll skew rolling process can reduce the diameter and increase the thickness of thin-walled tubes. Using 5056 aluminum alloy thin-walled tubes as the research object, the three-roll skew rolling of thin-walled tubes is numerically simulated by the rigid-plastic finite element method. The influence of end wall thickness of thin-walled tube blank on the mechanical parameters and wall thickness thickening effect was explored. The research shows that the axial rolling force increases with the increase of the wall thickness of the thickening section, which is not conducive to the thickening of the thin-walled tube. When the wall thickness at the end of the blank is 2.5 mm, the forming thickening effect is better, which meets the thickness requirements of the thickening section.

关 键 词：三辊斜轧 薄壁管件 坯料端部壁厚 增厚效果 

分 类 号：TG335.7[金属学及工艺—金属压力加工]