Shaped direct chill aluminum ingot
AssigneeTri-Arrows Aluminum Inc.
InventorsGyan Jha, J. David Brown, Shridas Ningileri, Weimin Yin, Randall Bowers
Life of this patent
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Abstract
Method and apparatus for forming aluminum ingot having shaped ends to avoid alligatoring during rolling.
Claims16
A cast aluminum ingot for rolling into flat rolled product comprising at least one formed end having opposed tapered surfaces extending a distance from a flat surface of said cast aluminum ingot across a widthwise dimension opposite a rolling direction, said tapered surfaces being provided at a first angle in a range of 2° to 20° from said flat surface of said cast aluminum ingot and a second angle in a range of 50° to 80° from said flat surface of said cast aluminum ingot extending a distance from said first angle towards said formed end;
- wherein upon 80% reduction in thickness, said cast aluminum ingot is free of alligatoring.
A cast aluminum ingot for rolling into flat rolled product comprising at least one formed end having opposed tapered surfaces extending a distance from a flat surface of said cast aluminum ingot across a widthwise dimension opposite a rolling direction, said tapered surfaces being provided at a first angle in a range of 2° to 20° from said flat surface of said cast aluminum ingot, and a second angle in a range of 50° to 80° from said flat surface of said cast aluminum ingot contiguous with and extending a distance from said first angle towards said formed end, and an additional surface extending between said opposed tapered surfaces and across the widthwise dimension;
- wherein upon 80% reduction in thickness, said cast aluminum ingot is free from alligatoring.
Dependencies are inferred from the claim text.