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Priority claimed from AT1007371Aexternal-prioritypatent/AT322599B/de
Application filed by Ver Edelstahlwerke AgfiledCriticalVer Edelstahlwerke Ag
Publication of NO133763BpublicationCriticalpatent/NO133763B/no
Publication of NO133763CpublicationCriticalpatent/NO133763C/no
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
C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation