Method of manufacturing aluminum alloy sheet
AssigneeKaiser Aluminum & Chemical Corporation
InventorsGavin F. Wyatt-Mair, Donald G. Harrington
Life of this patent
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Abstract
A method for manufacturing aluminum sheet stock which includes hot rolling an aluminum alloy sheet stock, annealing and solution heat treating it without substantial intermediate cooling and rapid quenching.
Claims27
A method for manufacturing of aluminum sheet stock comprising the following steps in a continuous, in-line sequence:
- (a) hot rolling an aluminum alloy feedstock to reduce its thickness;
- (b) annealing and solution heat treating the 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,
- (c) rapidly quenching the annealed and solution heat treated reduced feedstock.
A method for manufacturing aluminum alloy sheet comprising the following steps in continuous, in-line sequence:
- (a) hot rolling an aluminum alloy feedstock to reduce its thickness;
- (b) heating the reduced feedstock to a temperature sufficient to anneal and solution heat treat said hot rolled feedstock without intermediate cooling while maintaining the temperature of the reduced feedstock for a time and level sufficient to retain alloying elements in solution;
- (c) rapidly quenching the annealed and solution heat treated reduced feedstock to a temperature for cold rolling;
- and
- (d) cold rolling the quenched feedstock to produce sheet stock.
A method for manufacturing aluminum sheet stock comprising the following steps in a continuous, in-line sequence:
- (a) strip or slab casting an aluminum alloy on at least one endless belt to form an aluminum alloy strip.
- (b) hot rolling said strip to reduce its thickness;
- (c) heat treating said strip to a temperature sufficient to anneal said alloy 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 said strip.
A method for manufacturing aluminum sheet stock comprising the following steps in a continuous, in-line sequence:
- (a) strip or slab casting an aluminum alloy by depositing molten alloy on at least one endless belt formed of a heat conductive material whereby the molten metal solidifies on said belt to form a cast strip and continuously cooling the belt when it is not in contact with the metal;
- (b) hot rolling said cast strip to reduce its thickness;
- (c) heat treating said reduced strip by heating to a temperature sufficient to anneal the alloy 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 said strip.
Dependencies are inferred from the claim text.