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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v1.i1.90
pages 109-123

SURFACE TEMPERATURE MONITORING DURING PULSED LASER, ELECTRON BEAM AND PLASMA ACTION

M. Ignatiev
Institut de Science et de Génie des Matériaux et Procédés, CNRS., BP.5 Odeillo, 66125 Font-Romeu Cedex, France; Université de Perpignan, 52, avenue de Villeneuve, 66860 Perpignan, France
I. Yu. Smurov
C. N. R. S., Institut de Science et de Genie des Materiaux et Procedes B. P. 5, Odeillo, F-66125 Font-Romeu Cedex; Ecole Nationale d'Ingenieurs de Saint-Etienne, 58 rue Jean Parot, 42023 Saint -Etienne Cedex 2, France
Gilles Flamant
CNRS PROMES UPR 8521, Tecnosud, Rambla de la Thermodynamique, 66100 Perpignan, France
V. N. Senchenko
Institute for high temperature, Russ. Acad. Sci., Moscow; Pyrolab Ltd., Izhorskaya str., 13/19, 127412 Moscow, Russia
V. S. Dozhdikov
Institute for high temperature, Russ. Acad. Sci., Moscow, Russia

RÉSUMÉ

The set of pyrometers was developed for thermocycles monitoring in energy beams material processing. The combination of high speed (sampling time 20-50 μs), wide temperature range (800-4700 K) and spatial resolution (300-400 μm) provides the means for precise analysis of surface temperature dynamics. The advantages and the problems of pyrometry in pulsed laser applications are illustrated for Nd:YAG-laser action on metallic and ceramic materials. As a result, quantities such as the maximum value of temperature during whole thermocycle, the time of liquid phase existence, the duration of an allotropic transformation in a solid state, the heating and cooling rates, etc... may be determined. The real time monitoring of surface temperature is realised for electron beam welding and plasma cladding.


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