Foaming flux for automatic soldering process

Details Foaming flux for automatic soldering process Foaming flux for automatic soldering process

1991-10-21

1993-03-02

Ramsey, Kenneth J.

Metal fusion bonding

Process

With pretreating other than heating or cooling of work part...

228123, 148 23, B23K 120

Patent

active

051902087

ABSTRACT:
A non-toxic, non-corrosive foaming soldering flux (14) comprises citric acid and water, together with at least one foaming agent. The foam is fast-breaking, dissipating almost immediately. Such a fast-breaking foam is novel in an aqueous-based flux. The unique flux of the invention produces solder joints of high metallic luster and excellent quality. Disposal presents no health hazads, and clean-up of flux residues is accomplished using only water and, optionally, a surfactant.

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