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| Theory and Experiment of Tube Electromagnetic Flanging Based on Bidirectional Electromagnetic Force Loading |
| Zhang Wang1,2, Wang Yudong1, Li Yantao1,3, Yang Xinsen1,4, Qiu Li1,2 |
1. College of Electrical Engineering and New Energy Three Gorges University Yichang 443002 China;
2. Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station Yichang 443002 China;
3. Hubei Provincial Yi Ling District Power Supply Company Yichang 443100 China;
4. Foshan Power Supply Bureau of Guangdong Power Grid Co. Ltd Foshan 528000 China |
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Abstract The flanging angle is difficult to reach 90° in the process of conventional single radial electromagnetic force flanging. Thus, an electromagnetic flanging system based on axial-radial bidirectional electromagnetic force loading mode is proposed to improve the flanging effect of pipe fittings. The simulation data show that compared with the electromagnetic flanging system with only radial coils, the strong axial electromagnetic force introduced by the bi-directional electromagnetic flanging system significantly enhances the axial flow of the material, and then improves the flanging angle. In addition, comparative experiments based on a specific aluminum tube (AA6061-O) verify the effectiveness of the new electromagnetic flanging method. The experimental results demonstrate that the flanging angle of the tube electromagnetic flanging method based on bidirectional electromagnetic force loading is three times that of the traditional single coil flanging mode. Obviously, the improvement of electromagnetic force applying mode can effectively tackle the problems existing in tube electromagnetic flanging and promote the comprehensive application of electromagnetic forming technology in industry.
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Received: 26 April 2020
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2021, Vol. 36 
