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Laser Scribing of Grain Oriented Electrical Steel Under the Aspect of Industrial Utilization using High Power Laser Beam Sources

: Rauscher, Peter; Hauptmann, Jan; Beyer, Eckhard

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Emmelmann, C. ; Wissenschaftliche Gesellschaft Lasertechnik -WLT-:
LiM 2013, Lasers in Manufacturing. Seventh International WLT Conference on Lasers in Manufacturing. Proceedings : Munich, Germany, May 13-16, 2013
Amsterdam: Elsevier, 2013 (Physics Procedia 41.2013)
ISSN: 1875-3892
International Conference on Lasers in Manufacturing (LiM) <7, 2013, Munich>
Conference Paper, Journal Article, Electronic Publication
Fraunhofer IWS ()
grain oriented electrical steel; laser scribing; core losses

The core loss of grain oriented electrical steel can be improved by an additional treatment process. For the industrial utilization, the CO2 or Nd:YAG lasers are most widely used for laser scribing with typical core loss improvements of about 10%. In this work, a high power CO2 laser and fiber laser up to 4 kW laser power are investigated under the aspect of industrial utilization. It was found that a specific parameter range for both laser beam sources was necessary to improve the core losses for the applied parameter range. Furthermore, an increase of the core loss improvement of 0.3 mm HiB (High-Permeability) electrical steel was investigated by using the fiber laser compared to the CO2 laser.