Study and process control in laser conduction welding for millisecond-pulse duration range

Laurent Berthe; Delphine Delage; Didier Lepretre; Leonard Bacinello; Wolfgang Knapp; Nicolas Dumont; Friedrich Durand

doi:10.1117/12.470663

18 June 2002 Study and process control in laser conduction welding for millisecond-pulse duration range

Laurent Berthe, Delphine Delage, Didier Lepretre, Leonard Bacinello, Wolfgang Knapp, Nicolas Dumont, Friedrich Durand

Proceedings Volume 4637, Photon Processing in Microelectronics and Photonics; (2002) https://doi.org/10.1117/12.470663
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

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.

Citation Download Citation

Laurent Berthe, Delphine Delage, Didier Lepretre, Leonard Bacinello, Wolfgang Knapp, Nicolas Dumont, and Friedrich Durand "Study and process control in laser conduction welding for millisecond-pulse duration range", Proc. SPIE 4637, Photon Processing in Microelectronics and Photonics, (18 June 2002); https://doi.org/10.1117/12.470663

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