C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/02 (2006.01) B21C 37/22 (2006.01) B21D 53/02 (2006.01) B23K 35/28 (2006.01) B23P 15/26 (2006.01) B32B 15/01 (2006.01) F28F 21/08 (2006.01) B23K 35/02 (2006.01)
Patent
CA 2114822
A typical aluminum alloy brazing material (A) disclosed comprises over 7.0 wt. % and not more than 12.0 wt. % of Si, over 0.1 wt. % and not more than 8.0 wt. % of Cu, over 0.05 wt. % and not more than 0.5 wt. % of Fe, further at least one kind selected from a group consisting of. over 0.5 wt. % and not more than 5.5 wt. % of Zn, over 0.002 wt. % and not more than 0.3 wt. % of In and over 0.002 wt. % and not more than 0.3 wt. % of Sn, and the balance of A1. and inevitable impurities. A typical aluminum alloy brazing sheet with a three-layer structure cladded comprises a brazing material (A), a core material (B) comprising over 0.6 wt. % and not more than 2.5 wt. % of Si, over 0.5 wt. % and not more than 2.5 wt. % of Cu, over 0.05 wt. % and not more than 2.0 wt. % of Mn, and the balance of Al and inevitable impurities, and a sacrificial material comprising at least one kind selected from a group consisting of over 0.5 wt. % and not more than 6.0 wt. % of Zn, over 0.002 wt. % and not more than 0.3 wt. % of In and over 0.002 wt. % and not more than 0.3 wt. % of Sn, and the balance of Al and inevitable impurities, or comprises a core material (B) cladded both sides thereof with the brazing material (A). By using the inventive brazing materials or brazing sheets, the brazing heating can be performed at a temperature of 570 to 585°C.
Doko Takeyoshi
Hirano Yoji
Okada Koji
Onda Tokinori
Takeuchi Hiroaki
Borden Ladner Gervais Llp
Furukawa-Sky Aluminum Corp.
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