Water cooled welding gun

Details Water cooled welding gun Water cooled welding gun

1980-03-10

1982-01-26

Goldberg, Elliot A.

Electric heating

Metal heating

By arc

29592R, 156294, B23K 900

Patent

active

043130461

ABSTRACT:
A water cooled welding gun (10) includes an elongated current carrying inner tube (40) having a central opening (42) through which a consumable electrode and shielding gas may pass. The inner tube is provided with cooling passageways (50). A gas shielding nozzle (35) is connected to a gun tube cover (55) and is in thermal contact with the inner tube (40) through two layers of thermally conductive but electrically insulative materials (100, 105). The first layer (100) is preferably a rigid ceramic material, such as Al.sub.2 O.sub.3, and the second layer (105) is preferably a thermally conducting but electrically insulating material, such as epoxy, which is pliable when initially applied. The second material (105) fills the gaps between the outer surface of the first material and the inside surface of the gun tube cover (55) to provide a direct thermal path for the heat transfer from the nozzle (35) through the cover tube (30) into the cooled inner tube (40) while maintaining electrical isolation therefrom.

REFERENCES:
patent: 2870295 (1959-01-01), Haroldson
patent: 3121154 (1964-02-01), Menzies
patent: 3396361 (1968-08-01), Sussman
patent: 3524040 (1970-08-01), Gabe
patent: 3585272 (1971-06-01), Shatz

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