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Application filed by Richard Thomas & Baldwins LtdfiledCriticalRichard Thomas & Baldwins Ltd
Application grantedgrantedCritical
Publication of FI40506BpublicationCriticalpatent/FI40506B/fi
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
C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
C21D3/02—Extraction of non-metals
C21D3/04—Decarburising
C—CHEMISTRY; METALLURGY
C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
C23D3/00—Chemical treatment of the metal surfaces prior to coating
