Patent ID: 8381385
Filing Date: 2013-02-26
Classification: B21B,B22D,Y10T

Abstract:
1. A method of rolling an ingot of aluminum, the method comprising: (a) providing an aluminum ingot to be rolled, said aluminum ingot comprising at least one formed end having opposed tapered surfaces extending a distance from a flat surface of said 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 surface of said aluminum ingot and a second angle in the range of 50° to 80° from said flat surface of said cast aluminum ingot and extending a distance from said first angle towards said formed end; and (b) subjecting said aluminum ingot to multiple rolling passes in a rolling mill to reduce said aluminum ingot in thickness and extend the aluminum ingot in length to produce a sheet having a rolled end, said rolled end of said shet being free of alligatoring.