PURPOSE: To obtain an Al brazing sheet particularly improving the corrosion resistance of a heat exchanger, by cladding both sides or one side of an Al-alloy core material which contains respectively prescribed amounts of Cu, Mn, Si, and Fe and in which grain size is limited with an Al-Si or Al-Si-Mg alloy brazing sheet metal.
CONSTITUTION: An Al-alloy core material which contains, by weight ratio, 0.3W0.9% Cu, 0.5W1.5% Mn, ≤0.2% Si, and 0.2W1.0% Fe and in which grain size is regulated to 50W150μm is prepared. Moreover, the grain-size control of the above core material is carried out by controlling the homogenizing temp. of the core material. Then, both sides or one side of this grain size-controlled core material is clad with an Al-Si or Al-Si-Mg alloy brazing sheet metal. In this way, the Al brazing sheet having the above-mentioned characteristics, improved in strength by about 30% as compared with the conventional sheet, and capable of reducing the sheet thickness to about 0.6W0.45mm can be obtained.
| JPH04306494 | HEAT EXCHANGER |
| JP2020109332 | LIQUID COOLING APPARATUS |
| JP3179093 | [Title of the Invention] Aluminum alloy for pipe joints of heat exchangers |
ARA CHIAKI
MASUYAMA SHIGEO
KOJIMA KAZUHIRO
CALSONIC CORP
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