Method of making a tool component

C - Chemistry – Metallurgy – 22 – C

Patent

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Details

C22C 49/00 (2006.01) B22F 7/00 (2006.01) B22F 7/06 (2006.01) C22C 47/06 (2006.01) E21B 10/56 (2006.01)

Patent

CA 2472332

In a method of producing a tool component a plurality of fibres is formed into a bundle. Each fibre has a core comprising a mass of ultra-hard abrasive particles or precursor to said ultra-hard abrasive particles and optionally a second phase, and a coating comprising a mixture of carbide particles and particulate binder metal. After extruding the bundle of fibres, the bundle is severed transverse to its length to produce a layer 24. The layer 24 is placed on a surface 26 of a substrate 28 and the layer 24 and substrate 28 are subjected to elevated temperature and pressure conditions at which the ultra- hard abrasive particles are crystallographically stable. The composition of the core and coating may be interchanged in the method.

Dans un procédé de fabrication d'élément d'outil, une pluralité de fibres sont formées en un faisceau. Chaque fibre comporte un coeur incluant une masse de particules abrasives ultradures ou un précurseur de telles particules, et éventuellement une deuxième phase, et un revêtement comprenant un mélange de particules de carbure et un liant métallique particulaire. Après extrusion du faisceau de fibres, le faisceau est sectionné dans le sens transversal à sa longueur pour produire une couche (24). La couche (24) est placée sur une surface (26) d'un substrat (28), et la couche (24) ainsi que le substrat (28) sont soumis à des conditions de température et de pression élevées dans lesquelles les particules ultradures sont stables d'un point de vue cristallographique. Dans le procédé, la composition du coeur et celle du revêtement sont interchangeables.

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