Process for the heat treatment of iron-based metal parts in...

Details Process for the heat treatment of iron-based metal parts in... Process for the heat treatment of iron-based metal parts in...

C - Chemistry, Metallurgy

23

C

C23C 8/22 (2006.01) C21D 1/76 (2006.01)

Patent

CA 2228074

Process for heat treatment of iron-based metal parts in an active atmosphere with high carbon potential, characterized by the fact that the atmosphere is obtained by catalytic reaction between a hydrocarbon combustible and an oxidant having an oxygen content above 21% by volume and that said atmosphere contains at least 60% by volume of carburizing and/or reducing agents. Preferably, the oxidant has an oxygen content included between 21% and 35% by volume.

Procédé de traitement thermique de parties métalliques à base de fer dans une atmosphère active ayant un potentiel élevé en carbone. Le procédé se distingue du fait que l'atmosphère est obtenue par réaction catalytique entre un combustible d'hydrocarbure et un oxydant dont la teneur en oxygène est supérieure à 21 % par volume et l'atmosphère renferme moins de 60 % par volume d'agents de réduction ou de cémentation. De préférence, l'oxydant affiche une teneur en oxygène variant entre 21 % et 35 % par volume.

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