Title:
ALUMINUM ALLOY BRAZING SHEET FOR HEAT EXCHANGERS AND ALUMINUM ALLOY BRAZED OBJECT FOR HEAT EXCHANGERS
Document Type and Number:
WIPO Patent Application WO/2010/137649
Kind Code:
A1
Abstract:
Disclosed is an aluminum alloy brazing sheet (1) for heat exchangers, said brazing sheet provided with a core material (2) and a brazing material (3) that comprises an Al–Si–Zn alloy and is formed on at least one side of the core material (2). The core material (2) has a pitting potential of at least −650 mV (vs. Ag/AgCl). The brazing material (3) is characterized by a zinc concentration between 1% and 10% by mass; a liquid fraction X, at the brazing temperature, satisfying the relation 0.3 ≤ X ≤ 0.88; and a clad ratio d (%) satisfying the relation 15 < d ≤ 30. The brazing material is further characterized in that the product (X × d) of the liquid fraction X and the clad ratio d (%) satisfies the relation 6 ≤ (X × d) ≤ 23.
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Inventors:
MATSUKADO, Katsuhiro (())
松門 克浩 (())
松門 克浩 (())
Application Number:
JP2010/058992
Publication Date:
December 02, 2010
Filing Date:
May 27, 2010
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (10-26, Wakinohama-cho 2-chome Chuo-ku, Kobe-sh, Hyogo 85, 〒6518585, JP)
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
MATSUKADO, Katsuhiro (())
株式会社神戸製鋼所 (〒85 兵庫県神戸市中央区脇浜町二丁目１０番２６号 Hyogo, 〒6518585, JP)
MATSUKADO, Katsuhiro (())
International Classes:
C22C21/00; B23K35/22; B23K35/28; F28F9/18
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (AOYAMA & PARTNERS, IMP Building 3-7, Shiromi 1-chome, Chuo-ku, Osaka-sh, Osaka 01, 〒5400001, JP)
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