双线圈吸引式板件电磁成形过程中的涡流竞争问题

doi:10.19595/j.cnki.1000-6753.tces.200692

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Abstract Electromagnetic forming (EMF) is a kind of high energy processing technology that realizes rapid plastic forming of light alloy pieces by the pulsed electromagnetic force. Attraction electromagnetic forming is one of the unique applications. It uses two different pulse width currents to drive one coil to generate an attractive electromagnetic force, which is suitable for plate dent repairment and micro-tube forming. However, the single-coil structure has very strict requirements for parameter matching of the two currents, and the energy utilization efficiency is extremely low. Therefore, this paper puts forward a double-coil structure attracting electromagnetic scheme, that is, two kinds of current are used to drive a coil each. However, the double-coil structure brings new eddy current competition phenomenon, which will cause forming defects. Thus, this paper further studies the cause and mechanism of eddy current competition, and finally eliminates the forming defects by adjusting the coil structural parameters in the scheme of AA1060-H28 aluminum alloy plate with a diameter of 200 mm. This paper provides a better understanding of the attractive EMF process, and has significance for expanding the application of the EMF technology in plate processing.

Key words： Electromagnetic forming double-coil sheet metals attraction force eddy current competition

Received: 22 June 2020

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TM154

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	Xiong Qi
	Yang Meng
	Zhou Lijun
	Song Xianqi
	Li Zhe

Cite this article:

Xiong Qi,Yang Meng,Zhou Lijun等. Eddy Currents Competition in Electromagnetic Forming Process of Plates by Double-Coil Attraction[J]. Transactions of China Electrotechnical Society, 2021, 36(10): 2007-2017.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200692 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I10/2007

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