Patents Assigned to Kaiser Aluminum Warrick, LLC
  • Patent number: 11433441
    Abstract: In some embodiments of the present invention a method includes: obtaining a first aluminum alloy sheet formed from rolling a first ingot of a 3xxx or a 5xxx series aluminum alloy, wherein, prior to rolling, the first ingot has been heated to a sufficient temperature for a sufficient time to achieve a first dispersoid f/r of less than 7.65; and forming a container precursor from the first aluminum alloy sheet, wherein when the first aluminum alloy sheet is formed into the container precursor, the container precursor has less observed surface striations and ridges as compared to a container precursor formed from a second aluminum alloy sheet rolled from a second ingot having a second dispersoid f/r value of 7.65 or greater.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: September 6, 2022
    Assignee: Kaiser Aluminum Warrick, LLC
    Inventors: Thomas N. Rouns, David J. McNeish, Jean F. Capps, Samuel Combs, Christopher L. Walters