The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 2006
Filed:
Aug. 04, 2005
Patricia A. Stewart, Pittsburgh, PA (US);
James R. Anglin, Export, PA (US);
Ray T. Richter, Murrysville, PA (US);
Larry F. Wieserman, Apollo, PA (US);
Brian C. Reynolds, Davenport, IA (US);
Dean K. Vinnedge, Bettendorf, IA (US);
Jim M. Hart, Davenport, IA (US);
Patricia A. Stewart, Pittsburgh, PA (US);
James R. Anglin, Export, PA (US);
Ray T. Richter, Murrysville, PA (US);
Larry F. Wieserman, Apollo, PA (US);
Brian C. Reynolds, Davenport, IA (US);
Dean K. Vinnedge, Bettendorf, IA (US);
Jim M. Hart, Davenport, IA (US);
Alcon Inc., Pittsburgh, PA (US);
Abstract
In a lubricant composition suitable for use in the manufacture of aluminum alloys comprising a lubricant base, the improvement wherein the lubricant composition further comprises: an effective amount of water, surfactant, and a high viscosity organic material having a low vapor pressure. It is believed that this mixture provides a method for uniformly distributing the surface oxide at the meniscus for casting applications and increasing meniscus stability. Uniform distribution of the oxide and increased stability at the meniscus reduces vertical fold formation that can lead to cracks in the aluminum ingot. In addition, the mixture promotes uniform heat transfer around the mold. Uniform heat transfer around the mold allows the solidifying aluminum alloy to stay in contact with the mold longer and form stronger ingot shells. A process for continuous or semi-continuous casting of aluminum alloys via the use of this lubricant composition is also disclosed.