| Presentation | 2019-05-17 Proposal of High Speed Mechanical Switch for Commutation of Discharge Current in Magnetic Pulse Welding of Sheet Metals Tomokatsu Aizawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, magnetic pulse welding is done by rapidly flowing a large discharge current from a capacitor bank to an insulated 5-turn flat coil. The overlapped welding sheet metals with a gap are fixed on the coil, and high density magnetic flux is applied to them. Both sheets collide and are welded at high speed. The current is set to be nearly peak when the welding sheets collide. Two other sheet metals for mechanical switch contacts are also placed on the coil and connected to both ends of the coil. When the discharge current reaches nearly the peak, the contact sheets collide at high speed like the welding sheets. Most of the current flowing through the coil commutates to the short-circuit including the contact sheets. Depending on the circuit conditions after the commutation, the coil current does not oscillate but gradually damps. We propose such a high-speed mechanical switch for magnetic pulse sheet-welding. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Magnetic pulse welding / Sheet metal / Electromagnetic force / Capacitor bank / Discharge current / Commutation / Mechanical switch |
| Paper # | EMD2019-2 |
| Date of Issue | 2019-05-10 (EMD) |
| Conference Information | |
| Committee | EMD |
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| Conference Date | 2019/5/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Cyberscience Center, Tohoku University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Wada(TMC System) |
| Vice Chair | Yoshiki Kayano(Univ. of Electro-Comm.) |
| Secretary | Yoshiki Kayano(Muroran Inst. of Tech.) |
| Assistant | Yuichi Hayashi(ＮＡＩＳＴ) |
| Paper Information | |
| Registration To | Technical Committee on Electromechanical Devices |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Proposal of High Speed Mechanical Switch for Commutation of Discharge Current in Magnetic Pulse Welding of Sheet Metals |
| Sub Title (in English) | |
| Keyword(1) | Magnetic pulse welding |
| Keyword(2) | Sheet metal |
| Keyword(3) | Electromagnetic force |
| Keyword(4) | Capacitor bank |
| Keyword(5) | Discharge current |
| Keyword(6) | Commutation |
| Keyword(7) | Mechanical switch |
| 1st Author's Name | Tomokatsu Aizawa |
| 1st Author's Affiliation | Tokyo Metropolitan College of Technology(Tokyo Metropolitan College) |
| Date | 2019-05-17 |
| Paper # | EMD2019-2 |
| Volume (vol) | vol.119 |
| Number (no) | EMD-41 |
| Page | pp.pp.7-11(EMD), |
| #Pages | 5 |
| Date of Issue | 2019-05-10 (EMD) |