US 11,673,213 B2
Aluminum material for fluxfree cab brazing
Stephen F. Baumann, Lancaster, PA (US); Michael P. Danz, Lancaster, PA (US); and Ning Sun, Framingham, MA (US)
Assigned to ARCONIC TECHNOLOGIES LLC, Pittsburgh, PA (US)
Filed by Arconic Technologies LLC, Pittsburgh, PA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/937,092.
Application 17/937,092 is a division of application No. 16/471,270, granted, now 11,491,585, previously published as PCT/US2018/015006, filed on Jan. 24, 2018.
Claims priority of provisional application 62/452,090, filed on Jan. 30, 2017.
Prior Publication US 2023/0035052 A1, Feb. 2, 2023
Int. Cl. B23K 35/28 (2006.01); B23K 35/02 (2006.01); B23K 1/00 (2006.01); B23K 35/38 (2006.01); C22C 21/08 (2006.01); F28F 21/08 (2006.01); B32B 15/01 (2006.01); B23K 103/10 (2006.01); B23K 101/14 (2006.01)
CPC B23K 35/0238 (2013.01) [B23K 1/0012 (2013.01); B23K 35/286 (2013.01); B23K 35/383 (2013.01); B32B 15/016 (2013.01); C22C 21/08 (2013.01); F28F 21/084 (2013.01); F28F 21/089 (2013.01); B23K 2101/14 (2018.08); B23K 2103/10 (2018.08); F28F 2275/04 (2013.01); Y10T 428/12764 (2015.01)] 21 Claims
OG exemplary drawing
 
1. A brazing method comprising:
contacting a first material with a second material, wherein a brazing liner layer of the second material faces the first material; and
brazing the first material to the second material to form a product;
provided that the first material comprises a first aluminum alloy; and
provided that the second material comprises
a core layer comprising a 1XXX, 3XXX, or 6XXX series aluminum alloy,
the brazing liner layer comprising a 4XXX aluminum alloy, and
an interliner layer intermediate the core layer and the brazing liner layer, the interliner layer comprising a second aluminum alloy comprising, in weight percentages based on total weight of the second aluminum alloy,
0.25% to 1.7% Mg,
0.3% to 0.95% Si,
0.09% to 0.5% Bi,
aluminum, and
incidental impurities.