Method of hardfacing tool joints

Details Method of hardfacing tool joints Method of hardfacing tool joints

1978-12-28

1980-10-14

Goldberg, Elliot A.

Electric heating

Metal heating

For deposition welding

219 7321, 219 7615, 219128, B23K 904

Patent

active

042283396

ABSTRACT:
An improved method for hardfacing tool joints for earth boring drill pipe. Annular bands of hardfacing are applied by an apparatus that creates an arc between a consumable steel wire and the tool joint. The steel wire is reciprocated across the width of the band as the tool joint is rotated. Granules of tungsten carbide flow by gravity from a hopper into the weld puddle. The flow of granules into the puddle is stopped just prior to reaching the tie-in point. The arc continues a short distance, creating an overlapping protuberance at the tie-in that is free of granules at the surface. This protuberance can be easily ground smooth with the remainder of the hardfacing.

REFERENCES:
patent: 2709213 (1955-07-01), Gibson
patent: 3405247 (1968-10-01), Hliuka

Affiliated with

Also associated with

Rating

Method of hardfacing tool joints does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of hardfacing tool joints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of hardfacing tool joints will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2102428