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| Research on Electromagnetic Problems in Electromagnetic Forming Process |
| Qiu Li1, 2, Li Yantao1, Su Pan1, Xiong Qi1, Li Liang3 |
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 Station China Three Gorges University Yichang 443002 China;
3. Wuhan National High Magnetic Field Center Huazhong University of Science and Technology Wuhan 430074 China |
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Abstract Electromagnetic forming (EMF) is a high-speed pulsed forming technology, which has been extensively concerned because it can improve the material formability. The research on EMF mainly focuses on material problems and electromagnetic problems. Throughout the history of EMF, the material problems have been fully developed while the electromagnetic problems are relatively lagging behind. Based on the EMF principle, the new EMF technology are divided into three parts, including EMF by improving the distribution of electromagnetic force, EMF by changing the application of the electromagnetic force and EMF by combining electromagnetic forming with mechanical processing. The technical problems, the implementation plans, the forming results, the technical difficulties and the further research directions of each new EMF technology are chiefly discussed in this paper. Furthermore, the method to solve the problems of the structural strength and the temperature rise of the driving coil are also introduced, as a result, it can be found that the emergence of long-life driving coil is the prerequisite for EMF industrial application. Obviously, these researches on electromagnetic problems have driven the rapid development of EMF. In the further research, how to load the electromagnetic force flexibly and how to curb the temperature rise of the driving coil are being the two difficult problems to be solved in EMF.
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Received: 08 May 2018
Published: 14 June 2019
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2019, Vol. 34 
