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| Presentation | 2021-07-02 13:55 Comparison of discharge circuits for magnetic pulse welding using 1, 5 and 10 turn flat coils Aizawa Tomokatsu (Tokyo Metropolitan College)  EMD2021-1 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The discharge circuits for magnetic pulse welding of sheet metals using 1, 5 and 10 turn flat coils will have tens of times greater differences in capacitance (electric capacity), circuit inductance and circuit resistance during discharge. We compare the discharge circuits when the oscillation period of the damped oscillating discharge current is almost the same. Welding is performed by rapidly flowing the discharge current from each capacitor to each coil. Al/Cu sheets are overlapped with a gap, are fixed on each insulated coil. The Al sheet near the coil is electromagnetically coupled to the coil. When the current flows through the coil, the generated high-density magnetic flux is suddenly applied to the Al sheet. The resulting eddy currents are induced in the Al sheet and electromagnetic forces act on it. The Al sheet collides to the Cu sheet at high speed and both sheets are welded. In order to weld both sheets efficiently, the sheets are collided near the discharge current peak. We obtain and compare each inductance, resistance, logarithmic decrement, etc. from discharge circuit analysis and discharge current waveforms. This can support efficient magnetic pulse welding using the new 10 turn coil. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Electrical connection / Magnetic pulse welding / Al sheet / Cu sheet / Discharge circuit / Circuit analysis / Flat coil / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 85, EMD2021-1, pp. 1-6, July 2021. | |
| Paper # | EMD2021-1 | |
| Date of Issue | 2021-06-25 (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 | EMD2021-1 |
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| Conference Information | |
| Committee | EMCJ EMD WPT |
| Conference Date | 2021-07-02 - 2021-07-02 |
| 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 | 2021-07-EMCJ-EMD-WPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Comparison of discharge circuits for magnetic pulse welding using 1, 5 and 10 turn flat coils |
| Sub Title (in English) | |
| Keyword(1) | Electrical connection |
| Keyword(2) | Magnetic pulse welding |
| Keyword(3) | Al sheet |
| Keyword(4) | Cu sheet |
| Keyword(5) | Discharge circuit |
| Keyword(6) | Circuit analysis |
| Keyword(7) | Flat coil |
| Keyword(8) | |
| 1st Author's Name | Aizawa Tomokatsu |
| 1st Author's Affiliation | Tokyo Metropolitan College of Technology (Tokyo Metropolitan College) |
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| Speaker | Author-1 |
| Date Time | 2021-07-02 13:55:00 |
| Presentation Time | 25 minutes |
| Registration for | EMD |
| Paper # | EMD2021-1 |
| Volume (vol) | vol.121 |
| Number (no) | no.85 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2021-06-25 (EMD) |
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