C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/00 (2006.01) B23K 35/28 (2006.01) B23K 35/36 (2006.01) B23K 35/363 (2006.01)
Patent
CA 2180879
Objects of the present invention are to provide a brazeable aluminum alloy cast material which can be manufac- tured brazeable products without lowering the productivity and the method of brazing a cast material. The cast material. is composed of: 0.5 - 4.5 % by weight of Mn; 0.5 - 3 % by weight of Si; 0.5 - 1 % by weight of Fe; and the balance composed of aluminum and impurities. In the method of brazing the cast material, a brazing agent and/or flux are used, the brazing agent is composed of: 25 - 65 % by weight of Zn; 2 - 7 % by weight of Si; and the balance composed of aluminum and 0.1 % or less of Fe as one of impurities. The flux is a mixture of: 0.5 - 5 % by weight of LiF; 1 - 10 % by weight of ZnC1 2; 1 - 5 % by weight of K.alpha. AIF.alpha.+3 (.alpha. is an integer not less than 1.); and the balance composed of BaC1 2-KC1-NaC1.
Ashida Koji
Itoi Kohei
Otsuka Ryotatsu
Sato Shigeru
Sato Shoichi
Marks & Clerk
Showa Aluminum Corporation
Showa Denko K.k.
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