Transactions of Materials and Heat Treatment

Title：Diameter reduction forming and welding of magnetic pulse tube for multi-slit magnetic collector

Authors： Yan Ziqin Qiu Dongyang Cui Xiaohui Sun Xiaoming Wang Shipeng

Unit： Central South University

KeyWords： diameter reduction forming magnetic pulse welding magnetic collector forming uniformity electromagnetic force

ClassificationCode：TG391

year,vol(issue):pagenumber：2021,46(4):205-214

Abstract：

The diameter reduction of magnetic pulse tube is a kind of high speed forming process used in connecting metal tube with metal or non-metal tube and rod, and the magnetic collector can significantly improve the welding efficiency of magnetic pulse. However, in traditional magnetic collector, there is usually a slit for changing the induced current direction to regulate the magnetic force distribution, and the area near the slit is difficult to weld because the existence of slit makes the electromagnetic force unevenly distributed in circumferential direction, which reduces the circumferential uniformity of diameter reduction for magnetic pulse tube. In order to improve its uniformity, a multi-slit magnetic collector structure was proposed, and the influence of the number of slits N on the diameter reduction performance of magnetic pulse tube was studied. Finally, N=4 was determined as a better process parameters by electromagnetic force distribution and forming results. The results show that the diameter reduction system with multi-slit magnetic collector of magnetic pulse tube significantly improves the uniformity of free diameter reduction and circumferential forming of magnetic pulse welding.

Funds：

国家自然科学基金资助项目（51775563，51405173）；中南大学高性能复杂制造国家重点实验室开放课题研究基金（ZZYJKT2017-03，ZZYJKT2020-02）

颜子钦（1995-），男，博士研究生 E-mail：yzq1172@163.com 通讯作者：崔晓辉（1984-），男，博士，副教授 E-mail：cuixh622@csu.edu.cn

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