Development of Gas Discharge Electron Beam Source of Electron Beam Coaxial Wire and Fuse Additive Manufacturing Applicability

被引：0
作者：
Xu H. [1 ,2 ]
Wang Z. [1 ]
Peng Y. [2 ]
Yang G. [1 ]
Sang X. [1 ]
Yang B. [1 ]
机构：
[1] Science and Technology on Power Beam Generator Laboratory, AVIC Manufacturing Technology Institute, Beijing
[2] School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2022年 / 58卷 / 07期
关键词：
Electon beam gun; Electron beam; Electron beam coaxial wire; Fuse additive manufacturing; Inverter power supply;
D O I：
10.3901/JME.2022.07.276
中图分类号：
学科分类号：
摘要：
In order to improve the quality and efficiency of electron beam fuse additive manufacturing, the key technology of gas discharge electron beam source of electron beam coaxial wire has been studied. Based on the analysis of the generation mechanism of the gas discharge electron beam, the structure characteristics of the gas discharge electron beam gun of beam coaxial wire are studied. The inverter power supply for electron beam coaxial wire electron beam gun is developed by adopting three-stage AC-DC topology, inner loop and outer loop closed-loop control circuit of the accelerating power supply, and the beam closed-loop control circuit based on the gas flow regulation. Based on the above technical achievements, the electron beam fuse additive manufacturing equipment of electron beam coaxial wire is developed. The electron beam morphology characteristics, inverter power supply output characteristics and fuse forming process of the gas discharge electron beam source of electron beam coaxial wire are tested and analyzed. The results show that the microstructure of the sample prepared by the technology of electron beam coaxial wire is obviously improved compared with the hot cathode electron beam fuse forming technology, and it has necessary technical reserve for large-scale fuse additive manufacturing. © 2022 Journal of Mechanical Engineering.
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页码：276 / 283
页数：7
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