Method of manufacturing can body sheet
AssigneeKaiser Aluminum & Chemical Corporation
InventorsGavin F. Wyatt-Mair, Donald G. Harrington
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Abstract
A method for manufacturing aluminum alloy can body stock including a continuous, in-line sequence of hot rolling, annealing and solution heat treating without intermediate cooling and rapid quenching.
Claims30
A method for manufacturing of aluminum alloy can body sheet comprising the following steps in a continuous, in-line sequence:
- (a) providing an aluminum alloy hot can body feedstock;
- (b) hot rolling the feedstock to hot reduce its thickness;
- (c) annealing and solution heat treating the hot reduced feedstock without intermediate cooling while maintaining the temperature of the reduced feedstock for a time and level sufficient to retain alloying elements in solution;
- and
- (d) rapidly quenching the heat treated feedstock to a temperature for cold rolling.
A method for manufacturing aluminum alloy can body sheet comprising the following steps in continuous, in-line sequence:
- (a) strip or slab casting a can body aluminum alloy to form an aluminum alloy strip or slab;
- (b) hot rolling said strip or slab to reduce its thickness;
- (c) annealing and solution heat treating the hot reduced strip or slab without intermediate cooling while maintaining the temperature of the reduced feedstock for a time and level sufficient to retain alloying elements in solution;
- (d) rapidly quenching said strip or slab to a temperature for cold rolling;
- and
- (e) cold rolling said strip or slab to produce can body sheet stock.
A method of manufacturing aluminum alloy can body sheet containing manganese, copper, magnesium and silicon comprising the following in-line sequence of steps:
- (a) hot rolling the aluminum alloy can body sheet stock to reduce its thickness;
- (b) annealing and solution heat treating the hot reduced feedstock;
- and
- (c) rapidly quenching the heat treated feedstock to a temperature for cold rolling,
- each of said steps being carried out continuously and in-line without intermediate cooling to minimize precipitation of alloying elements in the aluminum alloy.
Dependencies are inferred from the claim text.