PCBN COMPACT FOR MACHINING OF FERROUS ALLOYS

The present application is a new improvement in the fine-grained cubic Boron Nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN and is sintered under HPHT conditions. The invention has lower levels of unreacted cobalt in the final...

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Bibliographische Detailangaben
Hauptverfasser:	DUES, Lawrence Thomas, YUMOTO, Kenji
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ALLOYS ARTIFICIAL STONE CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FERROUS OR NON-FERROUS ALLOYS LIME, MAGNESIA MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The present application is a new improvement in the fine-grained cubic Boron Nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN and is sintered under HPHT conditions. The invention has lower levels of unreacted cobalt in the final sintered material than conventions materials. The invention has proved beneficial in the machining of ferrous metal alloys such as sintered metal alloys. La présente invention concerne une nouvelle amélioration du compact fritté de nitrure de bore cubique à grains fins qui peut être utilisé pour fabriquer un outil de coupe. Le compact contient au moins 80 % en volume de BNc et est fritté dans des conditions HPHT. L'invention présente des niveaux de cobalt n'ayant pas réagi dans le matériau fritté final inférieurs à ceux des matériaux classiques. L'invention s'est avérée avantageuse dans l'usinage d'alliages métalliques ferreux tels que les alliages métalliques frittés.