METHOD AND DEVICE FOR MANUFACTURING INNER-SURFACE COATED CYLINDRICAL BODY AND INNER-SURFACE COATED CYLINDRICAL BODY MANUFACTURED THEREBY

PROBLEM TO BE SOLVED: To provide technology for forming an inner surface coating on the inner circumferential face of a cylindrical body with a self-fluxing alloy having a large surface hardness. SOLUTION: Inside the cylindrical body 1 placed sideways, there is arranged a self-fluxing alloy powder u...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEYA AKIHIRO, TADA FUMIAKI, WATANABE YASUO, YATABE KENJI, NISHIBABA KAZUNORI, SOJI YOSHINOBU, TANABE MICHIO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 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 FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide technology for forming an inner surface coating on the inner circumferential face of a cylindrical body with a self-fluxing alloy having a large surface hardness. SOLUTION: Inside the cylindrical body 1 placed sideways, there is arranged a self-fluxing alloy powder uniformly in the axial direction of the cylindrical body, in a quantity suitable for the thickness of coating to be formed. After a powder layer of a uniform thickness is formed on the inner circumferential face by rotating the cylindrical body 1 at high speed, the powder inside is melted by heating the cylindrical body 1 to form a molten metal layer, then cooled and solidified to form the inner surface coating. In melting and solidifying the self-fluxing alloy, with a centrifugal force of 20-50G kept working on the inner circumferential face position of the cylindrical body 1, the hard ceramics fine particles of low specific gravity in the molten metal are integrated anti-centrifugally on the inner diameter side, increasing the density and hardness of the hard fine particles on the face of the inner surface coating. COPYRIGHT: (C)2004,JPO