Downhole tools with low dilution zone bearing cladding and cladding processes
AssigneeHalliburton Energy Services, Inc.
InventorJay Stuart Bird
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Abstract
The present disclosure relates to downhole tools containing bearings with cladding on their surfaces. The cladding contains a low dilution zone. In specific embodiments, the downhole tools may be roller cone drill bits, also sometimes referred to as rotary cone drill bits. The present disclosure further relates to processes for applying cladding to bearings.
Claims14
The method of claim 19, wherein the cladding comprises a low dilution zone including 5% by proportion of atoms or less of a substrate metal. of atoms or less of a substrate metal.
The method of claim 19, wherein the substrate is located on a portion of a roller cone assembly that makes contact with a spindle or journal.
The method of claim 19, wherein the substrate is disposed on part of a spindle or journal of a support arm.
The method of claim 19, wherein the cladding comprises a Group VIII metal and an alloying element.
The method of claim 20, wherein the cladding comprises layers.
The method of claim 19, wherein the cladding is between 0.010 inches and 0.040 inches thick.
11-18. (canceled)
A method of applying a cladding to a substrate, the method comprising:
- applying a cladding slurry to the substrate;
- and
- placing the cladding slurry in a furnace and metallurgically fusing the cladding slurry to the substrate at an elevated temperature and reduced pressure to produce cladding on the substrate.
Dependencies are inferred from the claim text.