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INDUSTRIEOFENBAU GmbH
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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
C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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FR722455D1931-09-041931-09-04Four pour le traitement thermique et le recuit de l'acier moulé, des métaux de forge et matériaux analogues
ExpiredFR722455A
(fr)
Procédé pour le traitement thermique d'objets en métal ou en alliages métalliques, et particulièrement pour le durcissement de l'acier et du fer