Patent · US Active

Flux forming an insoluble brazing residue

US9579752B2 · kind B2 · utility

0Cited by

18References

9Claims

0Family size

Assignee

SOLVAY FLUOR GMBH · DE

Inventors

Andreas Becker · Celle, DE
Thomas Born · Holle, DE
Alfred Ottmann · Hannöver, DE
Hans-Walter Swidersky · Hannover, DE
Placido Garcia-Juan · Hannover, DE

Key dates

Filing date	Feb 10, 2010
Grant date	Feb 28, 2017
Priority date	—
Expiry date	Mar 24, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28F21/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Aluminum parts, e.g., heat exchangers, with improved resistance towards corrosion caused by contact with stationary water or aqueous compositions such as cooling water can be obtained by addition of Li compounds in specific amounts to the flux used for brazing the parts. LiF and especially Li fluoroaluminates are very suitable. The flux and the Li salt can be dispersed in water or an aqueous composition separately.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.