Drill bit head for percussion drilling apparatus

Details Drill bit head for percussion drilling apparatus Drill bit head for percussion drilling apparatus

E - Fixed Constructions

21

B

E21B 10/36 (2006.01) E21B 10/46 (2006.01)

Patent

CA 2713578

This invention relates to a percussion drill bit head for a percussion drilling apparatus, the drill bit head comprising a working surface and a plurality of super-hard buttons protruding from the working surface, the working surface having a hard area that is free of buttons and has Rockwell C hardness of at least 60HRc. The invention further relates to a method of manufacturing a percussion drill bit head comprising a working surface and a plurality of buttons and a percussion drill bit assembly comprising a drill bit head according to the invention.

La présente invention concerne une tête de forêt à percussion pour un appareil de forage à percussion, la tête de forêt comprenant une surface de travail et une pluralité de boutons extra-durs faisant saillie depuis la surface de travail, la surface de travail comprenant une zone dure exempte de boutons et présentant une dureté Rockwell C d'au moins 60HRc. L'invention concerne en outre un procédé de fabrication d'une tête de forêt à percussion comprenant une surface de travail et une pluralité de boutons, et un ensemble forêt à percussion comprenant une tête de forêt selon linvention.

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