Aluminium multilayer brazing sheet for fluxfree brazing

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United States of America Patent

PATENT NO 11654516
APP PUB NO 20210170532A1
SERIAL NO

16771611

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Abstract

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The present invention relates to a process for the production of an aluminium multilayer brazing sheet which comprises a core layer made of a 3xxx alloy comprising 0.1 to 0.25 wt. % Mg, a brazing layer made of a 4xxx alloy on one or both sides of the core layer, and optionally an interlayer between the core layer and the brazing layer on one or both sides of the core layer, the process comprising the successive steps of:

    providing the layers to be assembled or simultaneous casting of the layers to obtain a sandwich;rolling of the resulting sandwich to obtain a sheet; andtreating the surface of the sheet with an alkaline or acidic etchant.

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Patent Owner(s)

  • CONSTELLIUM NEUF-BRISACH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chehab, Bechir Voiron, FR 22 4
Loable, Carole Courbevoie, FR 1 2

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