Fin to tube welding by high frequency current source

Details Fin to tube welding by high frequency current source Fin to tube welding by high frequency current source

1975-06-09

1976-12-21

Truhe, J. V.

Electric heating

Metal heating

For bonding with pressure

219 85, 219 67, B23K 1102

Patent

active

039990290

ABSTRACT:
A method is disclosed for welding one or more fins or longitudinally extended plate like members to tubes or pipes by means of radio frequency resistance heating. A V-gap necessary for the high frequency welding technique is created by deforming the tube to produce an out of round or ovular shape. The welding is accomplished as the out of round tube or pipe is deformed back to a round shape while at the same time bringing the fin or plate like member into contact with the tube or pipe.

REFERENCES:
patent: 3588426 (1971-06-01), Harriau
patent: 3758740 (1973-09-01), Dupy

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