Fluorostannate-containing brazing or soldering fluxes and use thereof in brazing or soldering aluminum or aluminum alloys

US6880746B2 · kind B2 · utility

Assignee

• SOLVAY FLUOR und DERIVATE GmbH · DE

Inventors

• Ulrich Seseke-Koyro · Vellmar, DE
• Andreas Becker · Celle, DE
• Joachim Frehse · Hannover, DE

Key dates

• Filing date: Sep 30, 2002
• Grant date: Apr 19, 2005
• Expiry date: Sep 30, 2022

Classification

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

Abstract

Fluxing agents comprising potassium fluorostannate and/or cesium fluorostannate which can be used for brazing or soldering components of aluminum or of an aluminum alloy, even by solderless brazing or soldering. Conventional fluxing agents or other fluorometallates, such as alkali metal fluorozincates and/or alkali metal fluorosilicates, can also be added to the fluorostannate-containing fluxing agent. The fluxing agents of the invention can be applied by either dry or wet fluxing methods.