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Proceedings Paper

Gas hydrodynamics of CW laser cutting of metals in inert gas
Author(s): N. K. Makashev; E. S. Asmolov; V. V. Blinkov; A. Yu. Boris; A. V. Burmistrov; O. G. Buzykin; V. A. Makarov
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Paper Abstract

The quantitative model for the continuous-wave laser cutting of metals without chemical reactions is presented. The cutting gas flow is investigated experimentally using a geometrically similar model. Gas pressure and velocity distribution over the cutting front have been measured. Simplified mathematical algorithms for the heat problem have been developed and the maximum depth and cutting speed have been calculated depending on the laser beam parameters. The possible nonstationarities in motion of the melt and the cutting front have been considered. A thermal mechanism for regular cut ripple formation is suggested. The mechanism involves a balance of the capillary forces and those caused by the gas flow and acting on the melt near the upper edge of a cutting front. The simple formulae have been obtained for the magnitude and period of the ripples.

Paper Details

Date Published: 1 April 1994
PDF: 8 pages
Proc. SPIE 2257, Russia National Conference: Industrial Lasers and Laser Material Processing, (1 April 1994); doi: 10.1117/12.171629
Show Author Affiliations
N. K. Makashev, Central Aerohydrodynamics Institute (Russia)
E. S. Asmolov, Central Aerohydrodynamics Institute (Russia)
V. V. Blinkov, Research Institute for Aviation Technology and Industrial Engineering (Russia)
A. Yu. Boris, Central Aerohydrodynamics Institute (Russia)
A. V. Burmistrov, Central Aerohydrodynamics Institute (Russia)
O. G. Buzykin, Central Aerohydrodynamics Institute (Russia)
V. A. Makarov, Central Aerohydrodynamics Institute (Russia)


Published in SPIE Proceedings Vol. 2257:
Russia National Conference: Industrial Lasers and Laser Material Processing
Vladislav Ya. Panchenko; Vladimir S. Golubev, Editor(s)

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