TPWJ, 2010, #1, 2-6 pages
NUMERICAL ANALYSIS OF THE PROCESSES OF HEATING AND CONVECTIVE EVAPORATION OF METAL IN PULSE LASER TREATMENT
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue № 1, 2010 (January)
Pages 2-6
Authors
I.V. KRIVTSUN, I.L. SEMYONOV and V.F. DEMCHENKO
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Abstract
Mathematical model of the processes of heating, melting and evaporation of metal under the effect of a focused laser beam is suggested. The model allows describing thermal processes in the bulk of metal and gas-dynamic processes in a metal vapour flow occurring in laser treatment by using pulse lasers. Numerical analysis was conducted to study the processes of heating and convective evaporation of metal with a millisecond pulse of the Nd:YAG-laser beam affecting a low-carbon steel sample.
Keywords: pulse laser, laser radiation, metal, temperature field, evaporation, metal vapour, Knudsen layer, gas-dynamic processes, mathematical model
Received: ??.??.??
Published: 28.01.10
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