Method of manufacturing can body sheet using two sequences of continuous, in-line operations
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 two sequences of continuous, in-line operations. The first sequence includes the continuous, in-line steps of hot rolling, coiling, coil self-annealing and the second sequence includes the continuous, in-line steps of uncoiling, quenching without intermediate cooling, cold rolling, and coiling.
Claims25
A method for manufacturing can body sheet in which the process is carried out in two sequences of continuous, in-line operation comprising, in the first sequence, continuously hot rolling a hot aluminum feedstock to reduce its thickness, coiling the hot rolled feedstock while it is hot, holding the hot reduced feedstock at or near the hot rolling exit temperature for at least two minutes to effect recrystallization and solutionization without intermediate heating, and, in the second continuous in-line sequence, the steps of uncoiling the hot coiled feedstock and quenching the annealed feedstock immediately and rapidly to a temperature sufficient for cold rolling.
A method for manufacturing can body sheet in which the process is carried out in two sequences of continuous, in-line operation comprising, in the first sequence, continuously hot rolling a hot aluminum feedstock to reduce its thickness, coiling the hot rolled feedstock while it is hot, holding the hot reduced feedstock at or near the hot rolling exit temperature for at least two minutes to effect recrystallization and solutionization without intermediate heating, and, in the second continuous in-line sequence, the steps of uncoiling the hot coiled feedstock and quenching the annealed feedstock immediately and rapidly to a temperature sufficient for cold rolling and cold rolling the feedstock to produce can body sheet stock.
Dependencies are inferred from the claim text.