Aluminum heat exchanger
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United States of America Patent
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N/A
Issued Date -
Oct 5, 2006
app pub date -
Jul 2, 2004
filing date -
Jul 15, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An aluminum-made heat exchanger including a flat tube is formed by, using an aluminum strip-shaped material coated with a brazing metal on the outer surface of a core metal and coated with a sacrificial anode material at the inner surface side thereof, bending the strip-shaped material in the width direction thereof, wherein many flat tubes are diposed parallel with each other and joined using a flux in a furnace. In order to provide the aluminum-made heat exchanger capable of being satisfactorily brazed and a high strength after brazing, the brazing metal is of an Al--Si alloy, core metal is an Al--Si alloy including Si of 0.4 to 1.2% by weight, and the sacrificial anode material is of an Al--Mg--Zn alloy including Mg of 0.3 to 0.75% by weight.
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