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Paper Abstract and Keywords
Presentation 2022-02-10 15:10
Magnetic Pulse Welding of Al/Cu Sheets Using 10-Turn Flat Coil
Tomokatsu Aizawa (Tokyo Metropolitan College) R2021-44 EMD2021-12
Abstract (in Japanese) (See Japanese page) 
(in English) This magnetic pulse welding can electrically connect Al sheet and Cu sheet at low temperature with high quality. Welding experiments are performed by flowing a pulse discharge current from a parallel-charge series-discharge capacitor bank through a high inductance 10-turn flat coil. The 10-turn coil is used to reduce the discharge current for welding. The coil consists of 10 coil plates made of high-strength, medium-conductivity copper alloy. Overlapping Al/Cu sheets with a gap are fixed on the insulated coil. The Al sheet near the coil is electromagnetically coupled to the coil. When the current flows through the coil, a high density magnetic flux is suddenly applied to the Al sheet. The resulting eddy currents are induced in the sheet and electromagnetic forces act on the sheet. This sheet collides with the Cu sheet at high speed, and both sheets are impact welded. The bank capacitance during series-discharge is 6μF and the rise time of the discharge current is about 5μs.. The parallel charging voltage, the total bank energy and the peak discharge current required for welding are 7.6 kV, 0.70 kJ and about 16 kA, respectively.
Keyword (in Japanese) (See Japanese page) 
(in English) Magnetic pulse welding / Al sheet / Cu sheet / 10-turn flat coil / Capacitor bank / Series discharge / Pulse discharge current /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 369, EMD2021-12, pp. 6-11, Feb. 2022.
Paper # EMD2021-12 
Date of Issue 2022-02-03 (R, EMD) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF R2021-44 EMD2021-12

Conference Information
Committee R EMD  
Conference Date 2022-02-10 - 2022-02-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2022-02-R-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Magnetic Pulse Welding of Al/Cu Sheets Using 10-Turn Flat Coil 
Sub Title (in English)  
Keyword(1) Magnetic pulse welding  
Keyword(2) Al sheet  
Keyword(3) Cu sheet  
Keyword(4) 10-turn flat coil  
Keyword(5) Capacitor bank  
Keyword(6) Series discharge  
Keyword(7) Pulse discharge current  
Keyword(8)  
1st Author's Name Tomokatsu Aizawa  
1st Author's Affiliation Tokyo Metropolitan College of Technology (Tokyo Metropolitan College)
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Speaker Author-1 
Date Time 2022-02-10 15:10:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # R2021-44, EMD2021-12 
Volume (vol) vol.121 
Number (no) no.368(R), no.369(EMD) 
Page pp.6-11 
#Pages 6 
Date of Issue 2022-02-03 (R, EMD) 

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