Soldering flux containing a temperature sensitive chemically rea

Details Soldering flux containing a temperature sensitive chemically rea Soldering flux containing a temperature sensitive chemically rea

1984-12-19

1986-01-07

O'Keefe, Veronica

Metal treatment

Compositions

Fluxing

148 25, B23K 35362

Patent

active

045632243

ABSTRACT:
A heat-recoverable soldering device comprises a heat-recoverable member having a fusible solder insert and associated with the solder insert, a solder flux composition which undergoes a visible color change at a critical temperature. Solderable substrates are positioned within the device and heated until a critical temperature has been reached as indicated by a color change in the flux. The critical temperature depends on the material of the particular heat-recoverable member and the solder used. It is that temperature which is required to effect a solder joint between the substrates and recovery of the heat-recoverable member. Novel flux compositions and their use in soldering are also disclosed.

REFERENCES:
patent: 3087238 (1963-04-01), Nottingham
patent: 3730782 (1973-05-01), Poliak
patent: 3734791 (1973-05-01), Poliak
patent: 4137369 (1979-01-01), Chaikin
patent: 4344909 (1982-08-01), De Blauwe
patent: 4487638 (1984-12-01), Hoge

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