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Frith W F L
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Frith W F L
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Publication of FR322980ApublicationCriticalpatent/FR322980A/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
C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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FR322980D1902-07-051902-07-05Procédé perfectionné pour raffiner ou recuire l'acier et les autres métaux
ExpiredFR322980A
(fr)