Bearing with improved wear resistance and method for making same
AssigneeNorthmonte Partners, L.P.
InventorRobert B. North
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Abstract
A steel bearing member having an erosion resistant surface and a method of making the same is disclosed. The steel bearing member comprising a bearing substrate, a first overlay of hardbanding material having sintered cemented metal carbide pellets in steel and containing hard submicron sized particles, and a second overlay of steel containing hard particles that migrated from the first overlay of hardbanding material during application of the second overlay over the first overlay. A radial bearing member and a method of making the same is disclosed. A composition applied to the bearing substrate to improve the erosion resistance of this surface comprising a steel carrier and carbide pellets composed of submicron hard particles cemented with a metal binder is disclosed.
Claims15
A method of making a steel bearing member having an erosion resistant surface, comprising the steps of:
- applying a first overlay of hardbanding material to a bearing substrate, the first overlay having sintered cemented metal carbide pellets dispersed in steel, the cemented metal carbide pellets containing hard submicron sized particles;
- and
- applying to the first overlay a second overlay of steel using a heat process whereby a portion of the hard submicron sized particles migrates into a significant portion of the second overlay and forms with the first overlay, a steel hybrid matrix of tungsten, carbon and steel.
Dependencies are inferred from the claim text.