Method of repairing a spent electrode for plasma arc torch

Details Method of repairing a spent electrode for plasma arc torch Method of repairing a spent electrode for plasma arc torch

1997-01-24

1998-06-16

Paschall, Mark H.

Electric heating

Metal heating

By arc

219119, 21912152, 2940208, 2940217, B23K 1000

Patent

active

057674728

ABSTRACT:
A method of repairing a spent electrode for a plasma arc torch. The method includes removing an end piece of the spent electrode thereby leaving an electrode base. A blind bore is drilled into the end face of the electrode base. Internal female threads are then formed in the blind bore. A bevelled angle is machined at the entrance of the blind bore. Finally, a replacement end piece having a matching bevelled angle and threaded male portion is mated with the bevelled angle and internal threads, respectively, of the blind bore in the electrode base, thereby forming a rebuilt electrode.

REFERENCES:
patent: 4455471 (1984-06-01), Ecer et al.
patent: 4605031 (1986-08-01), Grund
patent: 4782740 (1988-11-01), Fagin et al.
patent: 4902871 (1990-02-01), Sanders et al.
patent: 5187347 (1993-02-01), Leef
patent: 5296668 (1994-03-01), Foreman et al.
patent: 5632078 (1997-05-01), Potter

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