Erosion resistant fluid passageways and flow tubes for...

Details Erosion resistant fluid passageways and flow tubes for... Erosion resistant fluid passageways and flow tubes for...

2007-12-14

2010-11-09

Bagnell, David J (Department: 3672)

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

C175S340000, C076S108200

Reexamination Certificate

active

07828089

ABSTRACT:
Flow tubes for earth-boring tools include hardfacing material for protecting the tubes from erosion due to the flow of fluid through a fluid passageway extending therethrough. Earth-boring tools include an erosion-resistant material covering a surface of a body of the tools for protecting the bodies from erosion due to the flow of fluid through a fluid passageway extending therethrough. Methods of forming earth-boring tools include forming a body having a fluid passageway extending therethrough and covering a surface of the body with a hardfacing material. The surface of the body may be located in a region susceptible to erosion when fluid is caused to flow through the fluid passageway.

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PCT International Search Report for International Application No. PCT/US2008/086394, mailed Jul. 23, 2009.
Juliot, Chad, et al., “Erosion Resistance of Infiltration Brazed Tungsten Carbide Cladding,” Conforma Clad, New Albany, IN, 9 pages, no date.

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