Process using protective flux coatings for delaying joining and

Details Process using protective flux coatings for delaying joining and Process using protective flux coatings for delaying joining and

1987-09-28

1992-03-24

Rowan, Kurt

Metal fusion bonding

Process

With protecting of work or filler or applying flux

148 23, 228207, 228214, B23K 120

Patent

active

050980106

ABSTRACT:
A volatile flux coating solution which, when dry, provides durable protective film coating containing residual flux, and a fluxing-soldering process utilizing such a solution. The coating solution is applied to a cleaned metal surface to be later joined and soldered to another metal surface, thereby obviating the need for recleaning and refluxing at the time of joining and soldering. Where two objects prepared according to this invention are joined, no additional cleaning or fluxing is required, thus saving significant time and labor at the work site. However, an object prepared according to the present invention may nevertheless be joined to an unprepared object at the work site if the unprepared object is prepared by conventional techniques, thereby allowing the prepared object to be joined with either prepared or unprepared objects. The soldering process is completed by soldering the two objects together according to conventional techniques.

REFERENCES:
patent: 3602979 (1971-09-01), LaIacona
patent: 3728783 (1973-04-01), Chartet
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patent: 3937387 (1976-02-01), Fletcher et al.
patent: 3960614 (1976-06-01), Stayner
patent: 4028143 (1977-06-01), Stayner et al.
patent: 4055725 (1977-10-01), Boynton
patent: 4127692 (1978-11-01), Boynton
patent: 4395294 (1983-07-01), Hobbins et al.
patent: 4523712 (1985-06-01), Zado

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