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Proceedings Paper

Study and process control in laser conduction welding for millisecond-pulse duration range
Author(s): Laurent Berthe; Delphine Delage; Didier Lepretre; Leonard Bacinello; Wolfgang Knapp; Nicolas Dumont; Friedrich Durand
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Paper Abstract

A system has been built for the fast control of the laser welding process in conduction regime. Based on a traditional Proportional Integral Derivative analysis, the system can regulate millisecond laser pulse. Besides, the interaction in this regime has been monitored with different diagnostics. Visible signal above target, IR signal from surface and visualization from CCM camera have been correlated as function of laser power density to distinguish the different phases of interaction. With this experimental set up, the detector used for control process could be calibrated. The integration of the system is shown for watch parts assembly.

Paper Details

Date Published: 18 June 2002
PDF: 8 pages
Proc. SPIE 4637, Photon Processing in Microelectronics and Photonics, (18 June 2002); doi: 10.1117/12.470663
Show Author Affiliations
Laurent Berthe, Cooperation Laser Franco-Allemande (France)
Delphine Delage, Cooperation Laser Franco-Allemande (France)
Didier Lepretre, Cooperation Laser Franco-Allemande (France)
Leonard Bacinello, Cooperation Laser Franco-Allemande (France)
Wolfgang Knapp, Cooperation Laser Franco-Allemande (France)
Nicolas Dumont, Laser Cheval (France)
Friedrich Durand, SMH Automation (Switzerland)

Published in SPIE Proceedings Vol. 4637:
Photon Processing in Microelectronics and Photonics
Jan J. Dubowski; Koji Sugioka; Malcolm C. Gower; Willem Hoving; Richard F. Haglund Jr.; Alberto Pique; Frank Traeger; Jan J. Dubowski; Willem Hoving, Editor(s)

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