COATED VALVE COMPONENTS WITH CORROSION RESISTAND SLIDING SURFACES

The present invention relates to a valve component comprising a substrate with sliding surface, the sliding surface being designed to be subjected to sliding against another surface during operation of the valve, wherein at least a portion of the sliding surface is coated with a coating comprising a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	WURZER, Manfred, WIDOWITZ, Franz, JARRY, Olivier, ROVERE, Florian, STADLBERGER, Andreas
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACTUATING-FLOATS 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 COCKS DEVICES FOR VENTING OR AERATING DIFFUSION TREATMENT OF METALLIC MATERIAL EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present invention relates to a valve component comprising a substrate with sliding surface, the sliding surface being designed to be subjected to sliding against another surface during operation of the valve, wherein at least a portion of the sliding surface is coated with a coating comprising an under-layer comprising tungsten and an upper-layer deposited atop the under-layer, said upper-layer comprising diamond-like-carbon, wherein - the under-layer comprises carbon and has a layer thickness of at least 1 micrometers, and - the upper-layer has a lower coefficient of friction than the under-layer and has a layer thickness of at least 1.5 micrometers. La présente invention concerne un composant de vanne qui comprend un substrat qui a une surface coulissante, la surface coulissante étant conçue pour être soumise à un coulissement contre une autre surface durant le fonctionnement de la vanne, au moins une partie de la surface coulissante étant revêtue d'un revêtement qui comprend une sous-couche qui comprend du tungstène et une couche supérieure déposée au-dessus de la sous-couche, ladite couche supérieure comprenant du carbone de type diamant, la sous-couche comprenant du carbone et ayant une épaisseur de couche d'au moins 1 micromètre, et la couche supérieure ayant un coefficient de frottement inférieur à celui de la sous-couche et ayant une épaisseur de couche d'au moins 1,5 micromètres.