Patent Number: 7,611,778

Title: Simultaneous multi-alloy casting

Abstract: A method of casting a multi-layered metal ingot including the steps of delivering a metallic divider member into a direct chill mold, pouring a first molten metal into the mold on one side of the divider member, and pouring a second molten metal into the mold on the other side of the divider member, and allowing the first molten metal and the second molten metal solidify to form a metal ingot which includes the divider metal layer disposed there between.

Inventors: Kilmer; Raymond J. (Lancaster, PA), Kirby; James L. (Delmont, PA)

Assignee: Alcoa Inc.

International Classification: B32B 15/20 (20060101); B22D 19/04 (20060101); B22D 19/16 (20060101); B23K 35/22 (20060101); B32B 15/01 (20060101)

Expiration Date: 1/03/02017