METHOD OF STEAM OXIDATION OF ARTICLES MADE FROM IRON- BASED ALLOYS IN FLUIDIZED BED

metallurgy; thermochemical treatment of iron-based alloys mainly produced through sintering of powder; mechanical engineering. SUBSTANCE: method includes heating articles in furnace in layer of inert material fluidized by steam. Article is preliminarily heated to 150-200 C in layer of inert material...

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Bibliographische Detailangaben
Hauptverfasser:	MAL'TSEVA L.A, GRACHEV S.V, KIRJUKHIN P.M, KOLPAKOV A.S, BOBOK A.N, SHAVELKIN A.D
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	metallurgy; thermochemical treatment of iron-based alloys mainly produced through sintering of powder; mechanical engineering. SUBSTANCE: method includes heating articles in furnace in layer of inert material fluidized by steam. Article is preliminarily heated to 150-200 C in layer of inert material fluidized by air followed by heating to 400-570 C; fluidizing by steam is effected through continuous delivery of water directly to furnace gas distributor. EFFECT: avoidance of steam heater in technological line; facilitated process due to intermittent delivery of water to working space; reduced duration of process; enhanced corrosion resistance of powder articles. 2 cl, 1 ex