Electrical resistance brazing device

Details Electrical resistance brazing device Electrical resistance brazing device

1988-12-16

1990-05-08

Miller, Jr., George H.

Electric heating

Metal heating

For bonding with pressure

219150R, B23K 104, B21V 508

Patent

active

049240544

ABSTRACT:
Apparatus for heating a tube/sleeve end fitting for brazing comprises an opposed pair of electrodes having arcuate electrode surfaces contoured for external peripheral engagement with a tube/sleeve end fitting, with one part of the electrode surface in engagement with the fitting sleeve and the other part of electrode surface in engagement with the tube closely adjacent to but spaced from the sleeve. A power transformer has a primary winding connected for selective application of current thereto, and a secondary winding consisting of the electrodes for selective application of heating current to an end fitting clamped between the electrodes for electrical resistance heating thereof. Timers control application of heating current to the end fitting for one or more operator-selectable predetermined timed durations.

REFERENCES:
patent: 3728887 (1973-04-01), Bachmann
patent: 4051667 (1977-10-01), Lange
patent: 4404458 (1983-09-01), Tange

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