The mechanism of the drilling of holes in vertical metallic plates by cw CO{sub 2} laser radiation

The possibility of making a hole in a vertical plate with the aid of laser radiation at a surface temperature not exceeding the boiling point is analysed neglecting the vapour pressure. The mechanism of the degradation of the liquid layer involving a reduction of its thickness, as a result of the re...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 29; no. 2
Main Authors Likhanskii, V V, Loboiko, A I, Antonova, G F, Krasyukov, A G, Sayapin, V P
Format Journal Article
LanguageEnglish
Published United States 28.02.1999
Subjects
BOILING POINTS
CARBON DIOXIDE LASERS
DATA
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENGINEERING
EXPERIMENTAL DATA
GAS LASERS
INFORMATION
LASER DRILLING
LASER RADIATION
LASERS
LAYERS
MACHINING
MATERIALS DRILLING
MELTING
METALS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLATES
RADIATIONS
THERMODYNAMIC PROPERTIES
THICKNESS
TRANSITION TEMPERATURE
VAPOR PRESSURE
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Summary:The possibility of making a hole in a vertical plate with the aid of laser radiation at a surface temperature not exceeding the boiling point is analysed neglecting the vapour pressure. The mechanism of the degradation of the liquid layer involving a reduction of its thickness, as a result of the redistribution of the molten mass owing to the operation of the force of gravity and of thermocapillary convection, is examined. The theoretical dependence of the critical size of the molten zone on the plate thickness is obtained and a comparison is made with experimental data. (interaction of laser radiation with matter. laser plasma)
ISSN:1063-7818
DOI:10.1070/QE1999V029N02ABEH001433