Process for processing valve seat

The invention provides a process for processing a valve seat, and relates to the technical field of valve seats. By adopting a laser alloying surface modification method, an in-situ synthesized particle reinforced nickel-based composite coating which is controllable in depth and forms firm metallurg...

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Bibliographische Detailangaben
Hauptverfasser:	LIU WENJIN, ZHANG WEIMING, MA MINGXING, SUN KANGHE, XIE JINTIAN, TIE SHOURONG, CHEN WENMING
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS 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 SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention provides a process for processing a valve seat, and relates to the technical field of valve seats. By adopting a laser alloying surface modification method, an in-situ synthesized particle reinforced nickel-based composite coating which is controllable in depth and forms firm metallurgical bonding with a base material is formed on the sealing surface of a valve seat main body; the hardness of the composite coating is 36-46HRC. According to the invention, Ni-based alloy powder is utilized to perform side powder injection laser alloying to prepare the in-situ synthesized particle reinforced nickel-based composite coating valve seat of which the thickness of the reinforced layer of a working sealed conical surface is 0.5-1.4mm.