MOLDING ALUMINUM ALLOY SHEET AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a molding aluminum alloy sheet excellent in coating/baking hardenability, mass productivity and moldability, and a method for manufacturing the same.SOLUTION: A method for manufacturing a molding aluminum alloy sheet comprises: a casting step (S11); a homogenization treatment step (S12); a hot rolling step (S13); a cold rolling step (S14); a solution heat treatment step (S15); the strain introduction step (S16) of introducing a strain of 0.5-5% within 5 minutes after the solution heat treatment step (S15) is performed at a temperature of 500-580°C and cooled to 100°C or less at a cooling rate of 600°C/min. or more; and a preliminary aging treatment step (S17) performed at 50-120°C for 2-24 hours.