OCT for Industrial Laser Welding
Together with the industrialization of OCT for laser welding, the development of industrial solutions for sequential online pre-, in- and post-process control with OCT are ongoing. An essential development attempt is a use the OCT keyhole depth data for closed-loop laser power control to keep the weld depth constant.
All the potential merits of OCT and the three-dimensional nature of the OCT data makes OCT in many respects superior to the traditional technologies. It empowers high productive and flexible production line layouts with increased volume of produced components. OCT makes welding in series production faster, more accurate, and thus more cost-effective than currently achievable with today’s conventional sensor technology.
Journal of Japan Laser Processing Society, Vol. 28, No. 2, June 2021, p. 19
Smart monitoring of battery welding processes
Sensor systems for laser welding applications along the battery production chain: from cell to package
For a better world: OCT unlocks real-time quality control during oscillation welding
Compared to conventional laser welding with a static focal spot, welding with an oscillating laser beam results in better weld quality. However, to ensure the broad industrial application of this technique, an easy-to-handle integrated system for precise seam tracking and quality monitoring is required. OCT can be applied to a welding process with an oscillating laser beam to influence the process by improving control of the weld position, depth and geometry. This is done by compensating the oscillating laser movements. Hence, laser welding of power storage and electric engine components using an oscillating beam can become more robust using a highly dynamic OCT system. OCT enables fast, precise and omnidirectional online detection of varying seam joint location, focal position, weld penetration depth, as well as weld faults.
Lesen Sie weiter: zum vollständigen englischsprachigen Fachartikel (Web-Version)
Gekürzter englischsprachiger Fachartikel (Druckversion):
OCT für das Schweißen von Hair Pins
Wegen der immer strengeren Anforderungen an den Umweltschutz müssen die Automobilhersteller den Kraftstoffverbrauch ihrer Fahrzeugflotten reduzieren. Der Übergang zur emissionsfreien Elektromobilität ist ein globaler, technologischer Trend. Der schnell wachsende Markt für Elektromobilität erfordert präzise geschweißte Funktionskomponenten. Das Laserschweißen leistet zusammen
mit Präzisionssensorsystemen wie OCT (Optische Kohärenztomografie, auf Englisch Optical Coherence Tomography) einen großen Beitrag zur Entwicklung von elektrischen Komponenten für voll- oder teilelektrifizierte Fahrzeuge, aber auch für die Batterien selbst.
Lesen Sie weiter: zum vollständigen Artikel
