Insert for an attack tool, method for making same and tools...

Details Insert for an attack tool, method for making same and tools... Insert for an attack tool, method for making same and tools...

E - Fixed Constructions

21

B

E21B 10/46 (2006.01) E21B 10/573 (2006.01)

Patent

CA 2741197

The invention relates to an insert for an attack tool, the insert comprising a super-hard cap having a volume and bonded to a substrate at an interface, the super-hard cap having an average Young's modulus of greater than 900 GPa and the substrate characterised in that it comprises a reinforcing bolster portion as a means for stiffening a region of the substrate proximate the interface, the reinforcing bolster portion having an aggregate volume that is greater than that of the super-hard cap and an average Young's modulus at least 60% that of the super-hard cap. The invention further relates to a method for manufacturing such an insert and a method for using such an insert.

Linvention porte sur un élément rapporté pour un outil dattaque, lélément rapporté comprenant un élément de recouvrement extra-dur possédant un volume et lié à un substrat au niveau dune interface, lélément de recouvrement extra-dur présentant un module de Young moyen supérieur à 900 GPa et le substrat étant caractérisé en ce quil comprend une partie traversante de renforcement servant de moyen pour raidir une zone du substrat proche de linterface, la partie traversante de renforcement présentant un volume global qui est supérieur à celui de lélément de recouvrement extra-dur et un module de Young moyen égal à au moins 60 % de celui de lélément de recouvrement extra-dur. Linvention porte également sur un procédé de fabrication dun tel élément rapporté et sur un procédé dutilisation de cet élément.

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