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Linde Air Products Co
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Linde Air Products Co
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Publication of FR779712ApublicationCriticalpatent/FR779712A/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
C21D1/06—Surface hardening
C21D1/08—Surface hardening with flames
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FR779712D1933-09-161934-09-07Perfectionnements aux procédés pour le traitement thermique d'objets ou de corps métalliques
ExpiredFR779712A
(fr)