Improving the metallurgical qualities of a product during treatment in a furnace using a diode laser to control at least one of the oxidizing species in the furnace atmosphere

摘要

A method for improving the metallurgical qualities of a product during its treatment in a furnace consists of controlling the concentration of at least one of the oxidizing species O2, H2O and/or CO2 of the furnace atmosphere using a diode laser beam which crosses the furnace in a manner to measure in real time the concentration of at least one of the species and to allow the modification of the injection rates of the combustible and/or the combustive of at least one burner and thus modify the oxygen concentration in the measuring zone.