Hard surfaced well tool and method of making same

Details Hard surfaced well tool and method of making same Hard surfaced well tool and method of making same

1976-02-27

1977-08-23

Peters, Jr., Joseph F.

Cutlery

308241, F16C 2900

Patent

active

040436110

ABSTRACT:
A wear resistant tubular well tool, such as a tool joint, comprises a hollow cylindrical body having a hard metal, such as a coarse-grained sintered tungsten carbide, deposited on a portion of the exterior of the body and a fine-grained hard metal, such as a cast tungsten carbide, deposit covering substantially all of the external surface of said coarse-grained hard metal deposit. The method of making the well tool comprises depositing the coarse-grained hard metal by welding and then casting or fusing the finegrained hard metal over the coarse-grained hard metal layer.

REFERENCES:
patent: 2334350 (1943-11-01), Neuhaus
patent: 2626190 (1953-01-01), Boice
patent: 3268274 (1966-08-01), Ortloff et al.

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