Method and system for brazing
AssigneeSchlumberger Technology Corporation
InventorKjell Haugvaldstad
Life of this patent
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Abstract
This invention provides methods and systems for brazing. One aspect of the invention provides a method of brazing cutter teeth. The method includes providing a bit body, pressing at least one cutter against the bit body with a spring device, placing the bit body and the at least one cutter in an inert gas filled chamber with about 10% H2, and heating the chamber to a temperature above the melting point of the filler metal thereby melting the filler metal. A quantity of filler metal is held between each of the at least one cutters and the bit body.
Claims18
A method of brazing cutter teeth, the method comprising:
- providing a bit body;
- pressing at least one cutter against the bit body with an external spring device, wherein a quantity of filler metal is held between each of the at least one cutters and the bit body;
- placing the bit body and the at least one cutter in an inert gas filled chamber with about 10% H2;
- and
- heating the chamber to a temperature above the melting point of the filler metal thereby melting the filler metal.
A method of brazing cutter teeth, the method comprising:
- providing a bit body, the bit body having an interior cavity;
- pressing at least one cutter against the bit body with an external spring device, wherein a quantity of silver is held between each of the at least one cutters and the bit body;
- placing the bit body and the at least one cutter in an inert gas filled chamber with about 10% H2;
- and
- placing an induction element in the interior cavity of the bit body to heat the bit body in a controlled manner;
- heating the chamber to a temperature above the melting point of silver thereby melting the silver.
A system for brazing cutter teeth, the system comprising:
- a chamber adapted to receive a bit body;
- a heating element configured to heat the chamber;
- an inert gas source configured to fill the chamber with an inert gas;
- and
- a spring device configured to press a plurality of cutting teeth against the bit body.
Dependencies are inferred from the claim text.