SIDE RAIL FOR COMBINATION OIL RING AND METHOD OF NITRIDING THE SAME

Aggressive property of the nitrided side rails (30), which are combined with a spacer expander (31) to construct the oil-control ring, against the opposing material is improved. A nitriding layer consisting of nitrogen diffusion layer is formed on the outer peripheral surface or inner and outer peri...

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Bibliographische Detailangaben
1. Verfasser:	INOUE, SHIGEO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 CYLINDERS 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 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:	Aggressive property of the nitrided side rails (30), which are combined with a spacer expander (31) to construct the oil-control ring, against the opposing material is improved. A nitriding layer consisting of nitrogen diffusion layer is formed on the outer peripheral surface or inner and outer peripheral surfaces of side-rail steel. The surface is free of compound layer. Hard grain-boundary phases (intergranular phases) are not present at least in the surface region of the side rail.