METHOD FOR PRODUCING COOLED GRINDING MATERIALS FROM ALUMINUM ALLOY FOR SOLDERING APPLICATIONS

摘要

A method for manufacturing an aluminum alloy fin material for brazing, which has the steps of: forming an ingot sheet, by casting a molten liquid of an aluminum alloy by a twin-roll-type continuous cast-rolling method; and cold-rolling the ingot sheet, to prepare a fin material, with the aluminum alloy containing each prescribed amounts of Mn, Fe, and Si, with the balance being Al and inevitable impurities, wherein the twin-roll-type continuous cast-rolling is applied under each prescribed conditions of a molten liquid temperature, a roll press load, a casting speed, and a thickness of the ingot sheet, and wherein two times or more of intermediate annealing are applied midway in the cold-rolling process, with the intermediate annealing including final intermediate annealing with a batch-type heating furnace in a prescribed temperature range, thereby adjusting the prescribed rolling ratio in the cold-rolling, after the final intermediate annealing.