| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing an aluminum alloy clad fin material which has excellent strength and solder erosion resistance after brazing. SOLUTION: In the method of producing an aluminum alloy-clad fin material, a surface material composed of an aluminum alloy having a composition containing 0.3 to 2.0% Fe, and the balance Al with inevitable impurities is clad on both the sides of a core material composed of an aluminum alloy having a composition containing 0.1 to 2.5% Mn and 0.05 to 0.3% Zr, and further one or two kinds of metals selected from 0.1 to 1.2% Si and 0.05 to 1.2% Ni, and the balance Al with inevitable impurities to produce a clad plate, and the clad plate is subjected to homogenizing treatment at 430 to 530°C, is thereafter hot-rolled, is subsequently subjected to process annealing for at least one time, and is subjected to cold rolling at a low rolling ratio satisfying a draft of >5 to <15% from the final process annealing to a final sheet thickness. COPYRIGHT: (C)2005,JPO&NCIPI
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