B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 7/06 (2006.01) C22C 26/00 (2006.01) C22C 29/08 (2006.01)
Patent
CA 2753471
The invention relates to a superhard element (10) comprising a polycrystalline superhard structure (20) joined at an interface to a hard-metal body (30) comprising metal carbide grains bonded together by a metal binder,- the polycrystalline superhard structure comprising a superhard material; the hard-metal body comprising a surface region (32) proximate the interface and a core region (36) remote from the interface, the surface and the core regions being contiguous, the mean binder fraction in the core region being less than that in the surface region and to a method of making a hard-metal body for such an element.
L'invention porte sur un élément ultra-dur comprenant une structure ultra-dure polycristalline réunie à une interface à un corps de métal dur comprenant des grains de carbure métallique liés ensemble par un liant métallique. La structure ultra-dure polycristalline comprend un matériau ultra-dur. Le corps de métal dur comprend une région de surface proche de l'interface et une région de cur éloignée de l'interface, les régions de surface et de cur étant contiguës, la fraction moyenne de liant dans la région de cur étant inférieure à celle de la région de surface. L'invention porte également sur un procédé de fabrication d'un corps de métal dur pour un tel élément.
Hlawatschek Sebastian Ralf
Konyashin Igor Yuri
Lachmann Frank Friedrich
Ries Bernd Heinrich
Element Six Holding Gmbh
Gowling Lafleur Henderson Llp
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