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C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
C21D1/34—Methods of heating
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FR919769D1946-01-071946-01-07Procédé de traitement des pièces en acier dur et appareils pour la mise en oeuvrede ce procédé
ExpiredFR919769A
(fr)
Procédé pour la fabrication de platines de traitement des pièces en acier dur ou autres applications, et appareils pour la mise en oeuvre de ce procédé