双线圈轴向压缩式管件电磁胀形电磁力分布规律与管件成形性能研究
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Qiu Li1,2 Yang Xinsen1 Chang Peng1 Xiong Qi1 Su Pan1 （1. College of Electrical Engineering and New Energy China Three Gorges University
Yichang 443002 China 2. Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower来自百度文库Station
国家自然科学基金资助项目（51507092、51877122、51707104）。 收稿日期 2018-07-09 改稿日期 2018-10-23
2856
电工技术学报
2019 年 7 月
electromagnetic-structural coupling finite element model is established to compare the electromagnetic force distribution and tube expansion property of single-coil system, three-coil system and two-coil system. Furthermore, the influence of the coil geometric parameters on the electromagnetic force distribution and the wall thickness is studied. The results show that the two-coil system can generate greater axial electromagnetic force, and the wall thickness reduction is 28.2% smaller than the traditional single-coil system. Because the structure is simplified and the coils are easy to math, the two-coil system has obvious technical advantages and application prospects.
Yichang 443002 China）
Abstract Electromagnetic tube expansion with axial compression can be realized by a three-coil system, which can solve the problem of the wall thinning existing in the traditional single-coil system. However, its tooling structure is complicated and the coils are difficult to match, resulting in unsatisfactory expansion effect. This paper proposes a two-coil system to realize the bidirectional loading of axial electromagnetic force and radial electromagnetic force more simply and effectively. In this method, two same coils are placed at the top and the bottom of the tube respectively, which can provide both axial and radial electromagnetic forces if the shape and size of the coils and the relative position of the coils to the tube are optimized. The structures of the coils are hence simplified while the bidirectional loading of axial electromagnetic force and radial electromagnetic can be achieved. An
2019 年 7 月 第 34 卷第 14 期
电工技术学报
TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY
DOI: 10.19595/j.cnki.1000-6753.tces.L80686
Vol.34 No. 14
Jul.
2019
双线圈轴向压缩式管件电磁胀形电磁力
分布规律与管件成形性能研究
邱 立 1,2 杨新森 1 常 鹏 1 熊 奇 1 苏 攀 1
（1. 三峡大学电气与新能源学院 宜昌 443002 2. 梯级水电站运行与控制湖北省重点实验室 宜昌 443002）
摘要 三线圈轴向压缩式管件电磁胀形能够实现工件的轴向流动，解决传统管件电磁胀形存 在的壁厚减薄问题，但其工装结构复杂、线圈配合困难，导致其实际成形效果并不理想。为了更 加简单有效地实现轴向电磁力与径向电磁力双向加载，本文首次提出双线圈轴向压缩式管件电磁 胀形方法。该方法仅在管件顶部与底部对称设置驱动线圈，通过分析优化驱动线圈的几何参数及 线圈与管件的相对位置，为管件提供合理的电磁力分布。此外，建立管件电磁胀形过程的电磁结构耦合有限元模型，对比分析单线圈、三线圈和双线圈管件电磁胀形电磁力分布规律与管件成 形性能，进一步研究驱动线圈几何参数对电磁力分布和管件壁厚的影响规律。分析结果显示，管 件内壁胀形量相同时，因双线圈加载能够产生更大的轴向电磁力，壁厚减薄量较单线圈减小 28.2%。显然，双线圈轴向压缩式管件电磁胀形亦能解决管件壁厚减薄的问题，且其工装结构简 单、线圈配合容易，具有更加明显的技术优势与应用前景。
关键词：管件电磁胀形 壁厚减薄 双线圈轴向压缩 轴向电磁力 中图分类号：TM154
Electromagnetic Force Distribution and Forming Performance in Electromagnetic Tube Expansion Process with Two Coils
Yichang 443002 China 2. Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower来自百度文库Station
国家自然科学基金资助项目（51507092、51877122、51707104）。 收稿日期 2018-07-09 改稿日期 2018-10-23
2856
电工技术学报
2019 年 7 月
electromagnetic-structural coupling finite element model is established to compare the electromagnetic force distribution and tube expansion property of single-coil system, three-coil system and two-coil system. Furthermore, the influence of the coil geometric parameters on the electromagnetic force distribution and the wall thickness is studied. The results show that the two-coil system can generate greater axial electromagnetic force, and the wall thickness reduction is 28.2% smaller than the traditional single-coil system. Because the structure is simplified and the coils are easy to math, the two-coil system has obvious technical advantages and application prospects.
Yichang 443002 China）
Abstract Electromagnetic tube expansion with axial compression can be realized by a three-coil system, which can solve the problem of the wall thinning existing in the traditional single-coil system. However, its tooling structure is complicated and the coils are difficult to match, resulting in unsatisfactory expansion effect. This paper proposes a two-coil system to realize the bidirectional loading of axial electromagnetic force and radial electromagnetic force more simply and effectively. In this method, two same coils are placed at the top and the bottom of the tube respectively, which can provide both axial and radial electromagnetic forces if the shape and size of the coils and the relative position of the coils to the tube are optimized. The structures of the coils are hence simplified while the bidirectional loading of axial electromagnetic force and radial electromagnetic can be achieved. An
2019 年 7 月 第 34 卷第 14 期
电工技术学报
TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY
DOI: 10.19595/j.cnki.1000-6753.tces.L80686
Vol.34 No. 14
Jul.
2019
双线圈轴向压缩式管件电磁胀形电磁力
分布规律与管件成形性能研究
邱 立 1,2 杨新森 1 常 鹏 1 熊 奇 1 苏 攀 1
（1. 三峡大学电气与新能源学院 宜昌 443002 2. 梯级水电站运行与控制湖北省重点实验室 宜昌 443002）
摘要 三线圈轴向压缩式管件电磁胀形能够实现工件的轴向流动，解决传统管件电磁胀形存 在的壁厚减薄问题，但其工装结构复杂、线圈配合困难，导致其实际成形效果并不理想。为了更 加简单有效地实现轴向电磁力与径向电磁力双向加载，本文首次提出双线圈轴向压缩式管件电磁 胀形方法。该方法仅在管件顶部与底部对称设置驱动线圈，通过分析优化驱动线圈的几何参数及 线圈与管件的相对位置，为管件提供合理的电磁力分布。此外，建立管件电磁胀形过程的电磁结构耦合有限元模型，对比分析单线圈、三线圈和双线圈管件电磁胀形电磁力分布规律与管件成 形性能，进一步研究驱动线圈几何参数对电磁力分布和管件壁厚的影响规律。分析结果显示，管 件内壁胀形量相同时，因双线圈加载能够产生更大的轴向电磁力，壁厚减薄量较单线圈减小 28.2%。显然，双线圈轴向压缩式管件电磁胀形亦能解决管件壁厚减薄的问题，且其工装结构简 单、线圈配合容易，具有更加明显的技术优势与应用前景。
关键词：管件电磁胀形 壁厚减薄 双线圈轴向压缩 轴向电磁力 中图分类号：TM154
Electromagnetic Force Distribution and Forming Performance in Electromagnetic Tube Expansion Process with Two Coils