ALUMINUM ALLOY SHEET FOR METAL BOTTLES OR AEROSOL CANS Russian patent published in 2018 - IPC C22F1/04 C22C21/00 B65D1/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to a method for manufacturing an aluminum alloy sheet used for making metal bottles or aerosol cans. Such method for producing the sheet includes casting a slab of an aluminum alloy containing, by wt. %: Si: 0.10–0.35, Fe: 0.30–0.55, Cu: 0.05–0.20, Mn: 0.70–1.0, Mg: 0.80–1.30, Zn: ≤0.25, Ti: <0.10, inevitable impurities <0.05 each and <0.15 total, the rest is aluminum, removal of the surface layer and homogenization of the slab at a temperature of 550–630 °C for at least one hour, hot rolling, the first stage of cold rolling with a reduction ratio of 35–80 %, recrystallization annealing, repeated cold rolling with a reduction ratio of 10–35 % to a thickness of 0.35–1.0 mm, wherein the recrystallization annealing is carried out at a temperature of 300–400 °C for at least one hour. Resulting sheet has a yield strength after heat treatment at 205 °C for 10 minutes, simulating the drying of varnishes, 170–210 MPa, and tensile strength of 200–240 MPa. Also, the invention relates to metal bottles, aerosol cans or aerosol dispensers made of said sheet.

EFFECT: invention is aimed at increasing the molding properties of aluminum alloy sheets.

13 cl, 2 ex, 4 tbl, 3 dwg