SPRAY PISTON RING AND METHOD OF MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To solve problems in a conventional spray piston ring wherein (1) the surface roughness of a spray film is worse though it can perform spraying without taking an inlaid spraying method (Figs. 4 to 6, not shown) and (2) since a chamfered part cannot be polished by a thermet spra...

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Bibliographische Detailangaben
Hauptverfasser:	OBARA AKIRA, HOSOTSUBO YUKIO, SAKAI YASUSHI, TAKIGUCHI KATSUMI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING 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 COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY PISTONS SEALINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To solve problems in a conventional spray piston ring wherein (1) the surface roughness of a spray film is worse though it can perform spraying without taking an inlaid spraying method (Figs. 4 to 6, not shown) and (2) since a chamfered part cannot be polished by a thermet spray film, it must rely on the inlaid spraying method. SOLUTION: In this spray piston ring, the chamfered part 4 of 0.05 mm or longer in radial depth and 0.3 mm or shorter in axial width is formed at least at the axial one end of the outer peripheral surface of the piston ring 1. The thermet spray film formed on the outer peripheral surface is formed mainly of particles with grain sizes of 10 μm or smaller, and its thickness is 0.03 to 0.2 mm. COPYRIGHT: (C)2006,JPO&NCIPI