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G W B ELECTRIC FURNACES Ltd
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G W B ELECTRIC FURNACES Ltd
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Publication of FR836691ApublicationCriticalpatent/FR836691A/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
C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
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FR836691D1937-04-151938-04-15Perfectionnement aux fours et dispositif pour offrir aux gaz des parcours variés dans ceux-ci
ExpiredFR836691A
(fr)