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Title:
ALUMINUM ALLOY BRAZING FIN MATERIAL FOR HEAT EXCHANGER, AND HEAT EXCHANGER USING THE SAME
Document Type and Number:
Japanese Patent JP2011099154
Kind Code:
A
Abstract:

To provide an aluminum alloy brazing fin material that can be brazed to a tube material with high brazing performance and is excellent in self-corrosion resistance, thermal conductivity and sacrificial anode effect, and a heat exchanger using the fin material.

The aluminum alloy brazing fin material 1 includes a core material 2 and brazing filler metals 3 and 3 attached to both sides thereof, wherein the core material 2 is made of an aluminum alloy comprising 1.2-1.8 mass% Mn, 0.10-3.0 mass% Zn, 0.20 mass% Fe and the balance being Al and unavoidable impurities. After a brazing treatment, Al-Mn-Si intermetallic compound has a number density of ≥1×104/mm2. The brazing filler metal 3 includes an aluminum alloy containing 6.8-11.0 mass% Si, ≤0.20 mass% Fe and the balance being Al. The fin material 1 itself shows an electric conductivity of ≤45% IACS before the brazing treatment.


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Inventors:
IWAO SHOHEI
YOSHINO MICHIHIDE
EDO MASAKAZU
KURODA SHU
Application Number:
JP2009256127A
Publication Date:
May 19, 2011
Filing Date:
November 09, 2009
Export Citation:
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Assignee:
MITSUBISHI ALUMINIUM
International Classes:
C22C21/00; B23K35/22; B23K35/28; C22F1/04; F28F21/08; C22F1/00
Domestic Patent References:
JP2006281266A2006-10-19
JP2007277707A2007-10-25
JP2009228010A2009-10-08
JP2008280544A2008-11-20
JPH02129347A1990-05-17
JPH05305307A1993-11-19
JP2011007385A2011-01-13
JP2008006480A2008-01-17
JP2010214379A2010-09-30
JP2005060790A2005-03-10
JP2009215643A2009-09-24
JP2009161831A2009-07-23
JP2009161826A2009-07-23
JP2008308761A2008-12-25
JP2008189998A2008-08-21
JP2007146264A2007-06-14
JP2007125608A2007-05-24
JP2011020218A2011-02-03
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe



 
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