High-speed non-destructive cleaning of metal foam substrate of e

Details High-speed non-destructive cleaning of metal foam substrate of e High-speed non-destructive cleaning of metal foam substrate of e

1993-05-18

1994-05-24

Breneman, R. Bruce

Cleaning and liquid contact with solids

Processes

Including melting

134 6, 134 7, 134 19, 134 21, 134 26, B08B 500, B08B 702

Patent

active

053145445

ABSTRACT:
A localized surface area of an open foam type metal substrate of an electrochemical cell electrode, where the substrate is filled with active material and compressed, is subjected to light pressure scrubbing by a heated soldering iron tip subjected to ultrasonic vibration to quickly dislodge the active material network of the open foam type metal substrate. Compressed air at approximately 100 psi is blown through the open foam type metal substrate to remove dislodged active material particles from the foam type metal substrate to permit effective welding of a metal terminal connection to the substrate at the localized area after cleaning. Alternatively, both opposite surfaces of the open foam type metal substrate at the localized area may be brushed to initially dislodge the active material from the pores of the open foam type metal substrate and the dislodged particles blown through the substrate from one surface to the other. Preferably, suction is applied to the opposite surface of the substrate from that subjected to the compressed air blowing to facilitate the removal of dislodged particles of active material.

REFERENCES:
patent: 1940385 (1933-12-01), Ackermann
patent: 4439281 (1984-03-01), Schneider et al.
patent: 4975230 (1990-12-01), Pinkhasov
patent: 5086969 (1992-02-01), Guerinault et al.
patent: 5196281 (1993-03-01), Pensabene et al.

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