Hard surfacing for oil well tools
AssigneeReed Tool Company
InventorDuane W. Wallace
Life of this patent
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Abstract
A method is disclosed for applying to rotating well drilling parts such as tool joints a multiple layer of hardbanding materials to provide extended wear service for the well tools without incurring any of the accompanying spalling normally associated with heavy layers of hardbanding.
Claims3
A well tool having surface wear properties enhanced by hard metal banding, said tool comprising a generally cylindrical steel tool body, a first layer of hardbanding material fused to said body, said first layer comprising large particles of sintered tungsten carbide in a mild steel matrix, and a second layer of hardbanding material on top of said first layer, said second layer comprising sintered tungsten carbide particles in a mild steel matrix.
Dependencies are inferred from the claim text.