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  4. Quantitative study of melt flow dynamics inside laser cutting kerfs by in-situ high-speed video-diagnostics
 
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2018
Journal Article
Title

Quantitative study of melt flow dynamics inside laser cutting kerfs by in-situ high-speed video-diagnostics

Abstract
Within this paper the melt flow dynamics of the laser cutting process during laser cutting of 6 mm thick stainless-steel using a disk laser with a laser power of 5 kW and nitrogen assist gas with a pressure up to 20 bar, is analyzed by in-situ high-speed video-diagnostics (>100,000 fps). An advanced algorithm is used to determine spatially resolved the melt flow dynamics on the laser cutting front. The results reveal a link between the fluid dynamics, the cutting velocity, the assist gas pressure and the average roughness of the cut flank.
Author(s)
Arntz, D.
Petring, D.
Stoyanov, S.
Quiring, N.
Poprawe, R.
Journal
Procedia CIRP  
Conference
International Conference on Photonic Technologies 2018  
Open Access
DOI
10.1016/j.procir.2018.08.057
Additional full text version
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Language
English
Fraunhofer-Institut für Lasertechnik ILT  
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