Registration of Melt Flow during Laser Beam Cutting

M. Hansmann; I. Decker; J. Ruge

doi:10.1117/12.950577

20 June 1989 Registration of Melt Flow during Laser Beam Cutting

M. Hansmann, I. Decker, J. Ruge

Proceedings Volume 1031, 7th Intl Symp on Gas Flow and Chemical Lasers; (1989) https://doi.org/10.1117/12.950577
Event: 7th International Symposium on Gas Flow and Chemical Lasers, 1988, Vienna, Austria

Abstract

For mild steel, the light emitted from the oxidation process at the cut front was observed in order to detect the melt flow behaviour. Through a beam splitter within the laser beam guidance the portions of radiation, which passed the nozzle orifice, were measured by a Si-photodiode within the visible and the near infrared range. A comparison to the geometrical structure of the surface shows agreement between the frequency of the sensor signal and that fo the formation of groovings. Therefore, the quality and the structure of roughness of the cut surface could be registrated on-line by frequency analysis of the sensor signal. This behaviour was studied with varying cut parameters.

Citation Download Citation

M. Hansmann, I. Decker, and J. Ruge "Registration of Melt Flow during Laser Beam Cutting", Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); https://doi.org/10.1117/12.950577

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