Flux-free joining of aluminium composite materials
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 2020
Grant Date -
Nov 10, 2016
app pub date -
Jun 9, 2016
filing date -
Dec 13, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Use of an aluminium composite material in a thermal joining method, said material consisting of at least one aluminium core alloy and at least one external brazing layer consisting of an aluminium brazing alloy provided on one or both sides of the aluminium core alloy, wherein the aluminium brazing layer has a pickled surface. Reduced costs and a lower environmental impact is achieved by using an aluminium composite material in which the pickled surface of the aluminium brazing layer had been pickled by pickling with an acid, aqueous pickling solution containing at least one mineral acid and at least one complex-forming agent or a complexing mineral acid, wherein the removal of material in the pickling is between 0.05 g/m2 and 6 g/m2, the aluminium composite material is used in a flux-free, thermal joining method, and the joining method is carried out in the presence of a protective gas.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- B23K Class
- 2440 Applications Filed
- 1724 Patents Issued To-Date
- 70.66 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B23K Class
- 61.89 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 15, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 15, 2032 |
