| 简介 |
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 extend-ing therethrough. Earth-boring tools include an erosion-re-sistant 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. Meth-ods of forming earth-boring tools include forming a body having a fluid passageway extending therethrough and cov-ering 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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