| 空间电子束电聚焦系统的设计 |
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| 引用本文： | 李春旭[,] 何成旦[,] 许启晋 蒋彩云.空间电子束电聚焦系统的设计[J].中国航空学报,2005,18(3):256-262. |
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| 作者姓名： | 李春旭[ ] 何成旦[ ] 许启晋 蒋彩云 |
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| 作者单位： | [1]State Key Lab of Advanced Non-ferrous Materials, Lanzhou University of Technology,Lanzhou 730050, China [2]College of Materials Science and Engineering, Lanzhou University of Science and Technology, Lanzhou 730050, China [3]Lanzhou Physics Institute, Lanzhou 730000, China |
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| 基金项目： | Foundation item： National Natural Science Foundation of Gansu Provinee（ZS-022-A25-04） |
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| 摘 要： | 根据国内外空间焊接技术的研究状况，提出了我国空间电子束焊枪用等径三圆简单透镜为主透镜的电聚焦系统设计方案和计算机辅助设计方法，利用计算机编程完成了聚焦系统的参数概算并取得了满意的结果。研究结果表明：电子束电流散焦小，在偏转磁场中束截面较小，工件上的束斑半径最小可达0．65615mm，可满足空间焊接和切割的需要，并证实了空间电聚焦系统的计算和设计方法是正确的。
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| 关 键 词： | 空间焊接 等径三圆筒单透镜 计算机辅助设计 空间电子束效应 |
| 收稿时间： | 01 28 2005 12:00AM |
| 修稿时间： | 05 22 2005 12:00AM |
Design of Electrostatic Focusing for Space Electron Beam Welding Gun |
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| Li ChunXu;He ChengDan;Xu QiJin;Jiang CaiYun.Design of Electrostatic Focusing for Space Electron Beam Welding Gun[J].Chinese Journal of Aeronautics,2005,18(3):256-262. |
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| Authors: | Li ChunXu;He ChengDan;Xu QiJin;Jiang CaiYun |
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| Institution: | Lanzhou University of Technology;Lanzhou University of Technology;Lanzhou University of Technology |
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| Abstract: | The developmental situation of spare welding technology at home and abroad is introduced. Then it is put forward that the designing scheme and the computer aided design (CAD) method of main single lens of the domestic space electron beam gun with equal-diameter three-cylinder simple lens, and the flowing-pipe way of calculating the space charge density of the main lens area in the electron gun is analyzed. The parameters calculation of the focusing system is completed through Language C utilizing computer programming and a satisfying result is gotten. The result shows that the calculation and design method are correct: the dispersed focusing current of electron beam is less, the beam section is less in the deflected magnetic field, the minimal radius of beam spot on the workpiece is about 0.656 15mm, and all these can meet the requirements of the space welding and cutting. |
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| Keywords: | space welding three-cylinder single lens CAD space charge effect |
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