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Progress in Plasma Processing of Materials, 1999

ISBN:
1-56700-126-2 (Print)

TEMPERATURE MONITORING DURING PLASMA-ARC WELDING AND CLADDING

Ph. Bertrand
C. N. R. S., Institut de Science et de Genie des Materiaux et Procedes B. P. 5, Odeillo, F-66125 Font-Romeu Cedex

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
Laboratoire des Procedes, Materiaux et Energie Solaire, PROMES-CNRS UPR 8521, 7 rue du Four solaire, 66120 Font Romeu-Odeillo, France

Abstract

This paper presents experimental results obtained by IMP-CNRS during plasma-arc welding and cladding using industrial equipment of SMEs (ATN, France - SOUDOBEAM, Belgium).
The pyrometers are laboratory-made devices in the frame of an European B.E. project. They are either one point, high spatial resolution, fast one or two wavelengths systems, or a 2D pyrometer equipped with a lO×lO photodetectors matrix.
Experimental data are discussed to identify the influence of process parameters variation, as well as defects on temperature distribution and to suggest some solutions for process control.