Method for producing aluminum alloy rolled material for molding having excellent bending workability and ridging resistance
Abstract:
The present disclosure relates to a method for producing an aluminum alloy rolled material for deformation molding, the method including: a step of performing homogenization treatment of an ingot including an aluminum alloy with predetermined composition; a step of cooling the aluminum alloy after the homogenization treatment so that an average cooling rate in an ingot thickness of ¼ part from 500° C. to 320° C. is 30° C./h to 2000° C./h; and a step of starting hot rolling at 370° C. to 440° C. and winding the hot-rolled aluminum alloy at 310 to 380° C., in which the method for producing an aluminum alloy rolled material for deformation molding further includes a step of retaining the aluminum alloy after the cooling step for 0.17 hours or more at a heating temperature before rolling set within a range of 370° C. to 440° C. before the hot rolling.
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