Experimental optimisation of the gas-assisted laser cutting of thick steel sheets

Journal Article · Tue Jun 30 00:00:00 EDT 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N06ABEH014040· OSTI ID:21467121

Malikov, A G; Orishich, Anatolii M; Shulyat'ev, Viktor B ^[1]

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1. S.A. Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)

We report on the experimental optimisation of the oxygen-assisted CO{sub 2} laser cutting of low-carbon sheet steel 5 to 25 mm in thickness. It is shown that the cut edge roughness is minimal when the energy input per unit volume of the material removed and the incident beam power per unit sheet thickness remain constant at {approx}20 J mm{sup -3} and {approx}200 W mm{sup -1}, respectively, over the entire range of sheet thicknesses examined. The corresponding Peclet number is Pe = 0.5. These results can be used to determine the optimal beam power and cutting speed for a particular sheet thickness. At sufficiently large thicknesses, the conditions that ensure the minimum roughness can be written in the form of relations between nondimensional parameters. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21467121
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 6; Other Information: DOI: 10.1070/QE2009v039n06ABEH014040; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON DIOXIDE LASERS
CARBON STEELS
CUTTING
LASER BEAM MACHINING
LASER RADIATION
OPTIMIZATION
OXYGEN
PHOTON BEAMS
ROUGHNESS
THICKNESS
ALLOYS
BEAMS
CARBON ADDITIONS
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
GAS LASERS
IRON ALLOYS
IRON BASE ALLOYS
LASERS
MACHINING
NONMETALS
RADIATIONS
STEELS
SURFACE PROPERTIES
TRANSITION ELEMENT ALLOYS