Synchronisierring

In an aspect of the present invention, a synchronizer ring, made of Fe-based sintered alloy, having an internal circumferential surface 101, is provided, the internal circumferential surface 101 being adapted to detachably engage in synchronized sliding with a rotating counterpart member thereof. At...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MASUYAMA, TETSUO, NAKAMURA, YOSHIKATSU
Format:	Patent
Sprache:	ger
Schlagworte:	BLASTING BRAKES CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CLUTCHES 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 COUPLINGS FOR TRANSMITTING ROTATION DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	In an aspect of the present invention, a synchronizer ring, made of Fe-based sintered alloy, having an internal circumferential surface 101, is provided, the internal circumferential surface 101 being adapted to detachably engage in synchronized sliding with a rotating counterpart member thereof. At least the internal circumferential surface 101 is applied with aqueous vapor treatment to form iron oxide film thereon. In another aspect of the present invention, the iron oxide film has surface roughness not less than 20 mu mRz but not more than 55 mu mRz. In a further aspect of the present invention, the iron oxide film has a surface roughness not less than 25 mu mRz but not more than 35 mu mRz. In another aspect of the present invention, the iron oxide film has a thickness not less than 0.05 mu m but not more than 5 mu m. In a further aspect of the present invention, the major component of the iron oxide film is Fe3O4. In a still further aspect of the present invention, at least the internal circumferential surface is applied with blasting treatment in addition to, and in combination with, the aqueous vapor treatment to form iron oxide film thereon.