Gm Global Technolgoy Operations, Inc.

Delphi Technologies, Inc.

Gary Allan Kemble

Christian Lamothe

Joseph P DiFonzo

John Stanley Rosen, Jr

Melvin C Nietopski

A fluxer applies powdered flux to an object. The fluxer includes an enclosure that defines a chamber where the object is fluxed. The enclosure includes an inlet for receiving the object into the chamber prior to application of the flux and an outlet for discharging the object from the chamber after the flux has been applied. A conveyor extends through the enclosure for traversing the object into and out of the chamber. The fluxer also includes a hopper for storing the flux and an applicator in fluid communication with the hopper for applying the flux to the object. A flux recovery system is in fluid communication with the chamber to introduce and maintain a negative pressure within the chamber. As a result, excess flux is retained within the enclosure. This excess flux can then be recovered and recycled to the hopper.

Fluxing apparatus for applying powdered flux

An improved heating cycle for brazing an assembly of clad aluminum sheet components having a hypoeutectic aluminum-silicon braze alloy cladding comprises a dwell at a temperature slightly above the eutectic melting point and effective to partially melt the cladding. The dwell is accompanied by vaporization of residual magnesium from the clad alloy to getter oxygen from about the assembly and enhanced disruption of oxide film on the cladding surface, which film would otherwise interfere with capillary flow of the braze alloy into joints. The eutectic temperature dwell provides a more uniform flow of braze alloy into seams and thereby produces a strong, leak-free joint in the brazed structure.

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Lockport, NY, United States of America

Gary Allan Kemble