Reinforcing overlay for matrix bit bodies
AssigneeSmith International, Inc.
InventorsMadapusi K. Keshavan, Kumar T. Kembaiyan, Alysia C. White, Anthony Griffo
Life of this patent
Estimating the term…
Abstract
A drill bit that includes a matrix bit body having a reinforcing overlay thereon and having at least one blade thereon; at least one cutter pocket disposed on the at least one blade; at least one cutter disposed in the at least one cutter pocket; and a braze material disposed between the at least one cutter and the at least one cutter pocket, wherein the reinforcing overlay comprises carbide particles and at least one binder and has a melting point greater than a melting point of the braze material is disclosed.
Claims28
A drill bit, comprising:
- a matrix bit body having a reinforcing overlay thereon and having at least one blade thereon;
- at least one cutter pocket disposed on the at least one blade;
- at least one cutter disposed in the at least one cutter pocket;
- and
- a braze material disposed between the at least one cutter and the at least one cutter pocket,
- wherein the reinforcing overlay comprises carbide particles and at least one binder and has a melting point greater than a melting point of the braze material.
(canceled)
(canceled)
A drill bit, comprising:
- a matrix bit body having a reinforcing overlay thereon and having at least one blade thereon;
- at least one cutter pocket disposed on the at least one blade;
- at least one cutter disposed in the at least one cutter pocket;
- and
- a braze material disposed between the at least one cutter and the at least one cutter pocket,
- wherein the reinforcing overlay comprises carbide particles and at least one binder and has a hardness greater than about 50 KRc.
(canceled)
A method of forming a drill bit, comprising:
- forming a matrix bit body having at least one blade thereon, wherein the at least one blade has at least one cutter pocket disposed thereon;
- applying a reinforcing overlay to the formed matrix bit body;
- and brazing at least one cutter in the at least one cutter pocket with a braze material.
Dependencies are inferred from the claim text.