| 摘要 |
A method of manufacturing an aluminum alloy fin material for brazing, comprising the steps of casting a molten aluminum alloy having specified amounts of Mn, Fe, and Si, and residues of Al and unavoidable impurities by a double-roll continuous casting rolling method to form a platy ingot and cold-rolling the platy ingot to form a fin material under the specified conditions of molten metal temperature, rolling pressure load, casting rate, and platy ingot thickness, wherein, during the cold-rolling, an intermediate annealing is performed twice or more and the last annealing among the annealings is performed at a specified temperature using a batch heating furnace, and the annealing rate of the cold-rolling after the final intermediate annealing is set to a specified value.
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