| 带集磁器的吸引式电磁力小管件翻边方法 |
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| 引用本文： | 李盛飞,朱险峰,刘子伟,熊奇,李哲,李彦昕.带集磁器的吸引式电磁力小管件翻边方法[J].强激光与粒子束,2023,35(5):055003-1-055003-11. |
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| 作者姓名： | 李盛飞 朱险峰 刘子伟 熊奇 李哲 李彦昕 |
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| 作者单位： | 1.三峡大学 电气与新能源学院，湖北 宜昌 443002 |
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| 基金项目： | 国家自然科学基金项目(51707104)；武汉强磁场学科交叉基金项目(WHMFC202121) |
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| 摘 要： | 针对微小铝合金管件电磁翻边工艺，现有方法将驱动线圈置于管件端部外侧，利用双频电流法产生吸引式电磁力实现翻边。然而其翻边能力不强，基于此提出一种带集磁器的吸引式电磁力翻边方法。在现有方法基础上引入集磁器，利用其能够改变磁场位形的特点，优化电磁力分布并增大轴向电磁力，达到增强翻边效果的目的。为验证该方法的可行性，通过搭建管件翻边过程的电磁-结构全耦合有限元仿真模型，对比引入不同集磁器后的翻边效果，同时分析了不同工况对电磁力分布、电磁力密度以及磁场和涡流的影响。得出阶梯型集磁器效果最佳，结果表明，该方法下管件翻边角度从38°增大到90°。进一步分析表明，其磁通密度径向分量和涡流密度环向分量分别增大到164%和135%，作用在管件上的电磁力分布改变，峰值时刻轴向电磁力体密度明显加强，增大到211%。该方法进一步完善了对微小铝合金管件的电磁翻边成形，对拓展电磁成形技术在铝合金管件翻边上的应用具有一定意义。
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| 关 键 词： | 微小铝合金管件 电磁翻边 吸引式电磁力 集磁器 |
| 收稿时间： | 2022-09-06 |
Attractive electromagnetic force flanging method for small tube fittings with magnetic field shaper |
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| Affiliation: | 1.College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China2.Hubei Provincial Engineering Technology Research Center for Power Transmission Line, China Three Gorges University, Yichang 443002, China3.State Grid Yichang Power Supply Company, Yichang 443000, China |
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| Abstract: | Aiming at the electromagnetic flanging process for small aluminum alloy tube fittings, the driving coil is placed on the outside of the end of the tube, and the dual-frequency discharge current method is used to generate the attractive electromagnetic force to realize flanging in the existing method. However, its flanging ability is not strong, under this background, an attractive electromagnetic force flanging method with a magnetic field shaper is proposed. On the basis of the existing method, a magnetic field shaper is introduced, which can change the magnetic field configuration, optimize the electromagnetic force distribution and increase the axial electromagnetic force, so as to achieve the purpose of enhancing the flanging effect. To verify the feasibility of this method, firstly, the electromagnetic-structural fully coupled finite element simulation model of the tube flanging process was built, and the flanging effects after introducing different magnetic field shaper were compared, and it is concluded that the stepped magnetic field shaper has the best effect. The flanging process were analyzed under the working conditions with stepped magnetic field shaper and without magnetic field shaper. The results show that the flanging angle of the tube fittings is increased from 38° to 90° compared with the case without the magnetic field shaper. Further analysis shows that the radial component of the magnetic flux density and the annular component of the eddy current density increase to 164% and 135%, respectively. The distribution of the electromagnetic force acting on the pipe fittings changes, and the density of the axial electromagnetic force increases significantly at the peak time, increasing to 211%. The method further improves the electromagnetic flanging forming of small aluminum alloy tube fittings, and it has a certain significance for expanding the application of electromagnetic forming technology in aluminum alloy tube flanging. |
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