For copper joining, blue diode lasers have made it possible to control heat conduction welding for the very first time. The technology, however, has reached its current limits with copper deep welding, where infrared lasers have also not achieved satisfactory results. A hybrid concept by Laserline that connects blue and infrared diode lasers has now opened up new manufacturing options. The approach does not only prove itself at the joining of sheets, but also at the static welding of hairpins – and in so doing moves the boundaries of copper welding altogether.
Nachdem in den letzten Jahren viele verschiedene Konzepte für Hochleistungslaser in der Materialbearbeitung getestet und eingeführt wurden, kommt es immer häufiger zu der Situation, dass mehrere technische Lösungsansätze zur Verfügung stehen. Anwender sind in diesem Zusammenhang oft unsicher, welche der Technologien für ihren Einsatz die optimale ist. Auch die Anwendungsbreite hat sich inzwischen vom klassischen Schneiden und Schweißen entsprechend erweitert, die Zahl der Freiheitsgrade einer geplanten Installation nimmt entsprechend zu. In diesem Beitrag soll aufgezeigt werden, mit welchen grundsätzlichen Faktoren man sich dabei auseinandersetzen kann oder sogar muss.
Diode lasers, in spite of their prefix “high‐power”, until a few years ago, were applicable merely as systems for surface modification, heat treatment, and in applications with low prerequisites in terms of beam quality. Today, they are widely used in key hole welding as well.
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