Method, device and filler metal for fluxless soldering

Details Method, device and filler metal for fluxless soldering Method, device and filler metal for fluxless soldering

1980-12-12

1983-05-10

Godici, Nicholas P.

Metal fusion bonding

Process

Critical work component, temperature, or pressure

228 56, B23K 106

Patent

active

043825354

ABSTRACT:
The invention relates to the soldering industry. The device comprises a frame supporting a crucible for a bath of molten filler metal, the bottom of the crucible being traversed in fluid-tight manner by a sonotrode sliding under the action of a jack fixed to the frame. An ultrasonic energy generator is associated with the sonotrode and controlled heating means are associated with the crucible. The active end of the sonotrode has a recess with at least one impression of a shape complementary with at least a portion of the outer surface of the parts to be soldered. The jack moves said active end alternately in and out of the bath. The invention is particularly useful for the soldering of aluminum tube cross-heads for heat exchangers.

REFERENCES:
patent: 3752381 (1973-08-01), Watson
patent: 3762368 (1973-10-01), Strube
patent: 3989179 (1976-11-01), Antonevich
patent: 4006707 (1977-02-01), Denslow
patent: 4203531 (1980-05-01), Reichel

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