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The magnetic pulse welding process, a procedure which has been relatively un-known so far, joints two metal parts without melting. How does that work? The special trick is the high velocity with which the two parts collide during the joining process. The parts lose their passive surface layers and melt together. The necessary forces are applied via a magnetic field flash, meaning there is no contact. The magnetic field is generated by a robust coil, over which a capacitor is quickly discharged. The implementation of this, at first glance bafflingly simple, technology into industrial applications is the focus of the current research of the Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS Dresden.more info