Resistance welding apparatus

Details Resistance welding apparatus Resistance welding apparatus

1978-11-16

1980-12-16

Goldberg, E. A.

Electric heating

Metal heating

For bonding with pressure

219 66, 219107, B23K 1100, B23K 1132

Patent

active

042399530

ABSTRACT:
Welding apparatus particularly adapted for use in welding parts into the interior surfaces of a metal tube in a pre-determined pattern obtained by longitudinal and rotational indexing of the tube. An elongated electrode arm, which is selectively flexible in one direction, extends into the tube and has a feed track attached thereto through which the metal pieces to be welded are moved into position to the welding head on the end of the electrode arm. The other end of the electrode arm is rigidly connected to a mount and is electrically insulated therefrom. A hydraulic piston carried by the electrode arm at its free end is actuatable to drive the entire arm sideways in its direction of flexibility so as to bring the piece to be welded into firm contact with the inside of the tube. Electrical current is then passed through the electrode arm and the piece to be welded, to the tube, and then to a grounded contact, to resistance weld the metal piece to the tube.

REFERENCES:
patent: 2550965 (1951-05-01), Brown
patent: 3600548 (1971-08-01), Bock

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