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In-situ quality monitoring during laser brazing

: Ungers, M.; Fecker, D.; Frank, S.; Donst, D.; Märgner, V.; Abels, P.; Kaierle, S.

Postprint urn:nbn:de:0011-n-1474041 (1.2 MByte PDF)
MD5 Fingerprint: a66c65a2803b178574bef8039a7efbd7
Erstellt am: 8.12.2010

Schmidt, M.:
LANE 2010, 6th International Conference on Laser Assisted Net Shape Engineering. Proceedings. Pt.2 : Erlangen, September 21-24, 2010
Amsterdam: Elsevier, 2010 (Physics Procedia 5.2010, Nr.2)
International Conference on Laser Assisted Net Shape Engineering (LANE) <6, 2010, Erlangen>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()

Laser brazing of zinc coated steel is a widely established manufacturing process in the automotive sector, where high quality requirements must be fulfilled. The strength, impermeablitiy and surface appearance of the joint are particularly important for judging its quality. The development of an on-line quality control system is highly desired by the industry. This paper presents recent works on the development of such a system, which consists of two cameras operating in different spectral ranges. For the evaluation of the system, seam imperfections are created artificially during experiments. Finally image processing algorithms for monitoring process parameters based the captured images are presented.