Effect of blank quenching on shear spinning forming precision of 2219 aluminum alloy complex thin-walled components  

作　　者：Zhixin LI Mei ZHAN Xiaoguang FAN Yunda DONG Luopeng XU 

机构地区：[1]School of Science,Civil Aviation Flight University of China,Guanghan 618307,China [2]State Key Laboratory of Solidification Processing,Shaanxi Key Laboratory of High-Performance Precision Forming

出　　处：《Chinese Journal of Aeronautics》2023年第4期538-555,共18页中国航空学报（英文版）

基　　金：co-supported by the Young Scientists Fund of the National Natural Science Foundation of China(No.52105417);the Foundation of Civil Aviation Flight University of China(Nos.J2022-067,ZJ2022-003 and JG2022-27);the National Science Fund for Excellent Young Scholars of China(No.52122509).

摘　　要：The quenching-spinning(Q-S)process,i.e.,shear spinning after blank quenching,has been increasingly utilized to form 2219 aluminum alloy complex thin-walled components.However,the changes in material property,shape and stress of the blanks after quenching will affect the spin-ning forming precision.In this study,the rules and mechanisms of these effects are investigated based on a combined finite element(FE)model including blank quenching and component spinning process.The results indicate that the increase of material strength and the existence of distortion of the quenched blank lead to a notable increase in the non-uniformity of the circumferential compres-sive stress in the spinning area and the increase of the flange swing height during spinning.These changes result in an increase in the wall thickness and component-mandrel gap of the components.The quenching residual stress has little effect on wall thickness and roundness but can noticeably reduce the component-mandrel gap.This is because that the existence of quenching residual stress of the blank can lead to the decrease of the maximum circumferential compressive stress of the workpiece in spinning and an obvious drop in the maximum compressive stress after reaching the stress peak.Quenching distortion is the main factor affecting the roundness.Moreover,the opti-mized installation way of the blank for spinning is obtained.

关 键 词：2219 aluminum alloy Complex thin-walled com-ponents Finite element analysis Quenching distortion Residual stress Shear spinning 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程] V46