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DOUGREE MARIHAYE SA
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DOUGREE MARIHAYE SA
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Publication of FR711815ApublicationCriticalpatent/FR711815A/fr
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
C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
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FR711815D1930-02-261931-02-23Procédé pour le traitement thermique des rails
ExpiredFR711815A
(fr)