Flux suitable for soldering light metals such as aluminum

US5980650A · kind A · utility

Assignee

• SOLVAY FLUOR und DERIVATE GmbH · DE

Inventors

• Heinz-Joachim Belt · Burgwedel, DE
• Alfred Borinski · Sehnde, DE
• Ruediger Sander · Sehnde, DE
• Werner Rudolph · Hannover, DE

Key dates

• Filing date: Jan 24, 1996
• Grant date: Nov 9, 1999
• Expiry date: Jan 24, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K2103/10
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A flux which contains irreversibly dehydrated K.sub.2 AlF.sub.5, for soldering light metal materials, in particular aluminum. The flux has the advantages of forming a very uniform flux coating on the workpiece or workpieces to be soldered and exhibiting outstanding flow of the solder. An appropriate soldering process, an aqueous flux suspension and preparation processes for the flux are also disclosed.