Method for hardfacing roller cone drill bit legs

Details Method for hardfacing roller cone drill bit legs Method for hardfacing roller cone drill bit legs

2005-04-05

2005-04-05

Watts, Douglas D (Department: 3724)

Metal tools and implements, making

Blank or process

Drill

Reexamination Certificate

active

06874388

ABSTRACT:
A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.

REFERENCES:
patent: 5279374 (1994-01-01), Sievers et al.
patent: 5322727 (1994-06-01), Yankus et al.
patent: 6142247 (2000-11-01), Pessier
patent: 20020035895 (2002-03-01), Davies et al.
patent: 961749 (1964-06-01), None
patent: 2 276 886 (1994-10-01), None

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