YANG Xiao, LI Tian, QIAO Lei, et al.Study on Temperature Field and Deformation of Double Electron Beam Welding of Intermediate Case of Aero Engine[J].Electric Welding Machine, 2022, 52(4): 44-50. DOI： 10.7512/j.issn.1001-2303.2022.04.07.
Study on Temperature Field and Deformation of Double Electron Beam Welding of Intermediate Case of Aero Engine
It is easy for the intermediate case to deform during welding, thus affecting the quality of parts and assembly process. Electron beam welding is usually used to join the intermediate case to reduce the welding deformation, but the conventional single electron beam welding still can not solve the problem of large deformation, which affects the manufacturing of the whole aero engine. In this paper, the temperature fields, stress fields and deformations of aero-engine case welded by single electron beam with 180 ° apart, double electron beams with 180° apart and double electron beams with 90 ° apart respectively are simulated by using SYSWELD. Finally, the influence of these methods on the welding deformation of thin-walled complex structures is studied. The results show that the non-uniform temperature field of single electron beam welding results in large welding deformation. The temperature field of double electron beam welding is more symmetrical than that of single electron beam welding and has less welding distortion. Therefore, double-electron beam welding is more suitable for welding thin-walled structure which is easily deformed. The research results provide theoretical basis for equipment upgrade and double-electron beam welding research in domestic enterprises.
Han Xiufeng， Wang Lun， Zhu Mingliang， et al. Microstructures and Mechanical Properties Research of Electron Beam Welding Joint of TA19 Titanium Alloy［J］. Chinese Journal of Rare Metals. 2021，45（7）：778-785.
Li Yanjun， Wu Aiping， Li Quan， et al. Effects of welding parameters on weld shape and residual stresses in electron beam welded Ti2AlNb alloy joints［J］. Transactions of Nonferrous Metals Society of China， 2019，29（1）：67-76.