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Priority claimed from GB374666Aexternal-prioritypatent/GB1137187A/en
Priority claimed from GB374667Aexternal-prioritypatent/GB1162957A/en
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Publication of BE693287ApublicationCriticalpatent/BE693287A/xx
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
C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
