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Proceedings Paper

Registration of Melt Flow during Laser Beam Cutting
Author(s): M. Hansmann; I. Decker; J. Ruge
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Paper 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.

Paper Details

Date Published: 20 June 1989
PDF: 4 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950577
Show Author Affiliations
M. Hansmann, Institut fur SchweiBtechnik (F.R.G.)
I. Decker, Institut fur SchweiBtechnik (F.R.G.)
J. Ruge, Institut fur SchweiBtechnik (F.R.G.)


Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers

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