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:
Dec. 05, 2006
Filed:
Aug. 04, 2005
John Bahaychick, New Kensington, PA (US);
James R. Anglin, Export, PA (US);
Patricia A. Stewart, Pittsburgh, PA (US);
Thomas A. Ferrazzoli, Lower Burrell, PA (US);
Larry F. Wieserman, Apollo, PA (US);
John Bahaychick, New Kensington, PA (US);
James R. Anglin, Export, PA (US);
Patricia A. Stewart, Pittsburgh, PA (US);
Thomas A. Ferrazzoli, Lower Burrell, PA (US);
Larry F. Wieserman, Apollo, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
In a lubricant composition suitable for use in the manufacture of aluminum alloys comprising lubricant base selected from the group consisting of solid lubricants, liquid lubricants, grease lubricants, emulsion lubricants, and dispersion lubricants, the improvement wherein the lubricant composition further comprises: an effective amount of water and surfactant or water and a compound comprising phosphates, borates, fluorides, and silicates. It is believed that mixing oil with water and surfactant or one of these compounds provides a method for uniformly distributing the surface oxide at the meniscus for casting applications, thereby reducing vertical fold formation that lead to cracks in aluminum ingots. In addition, the mixture promotes uniform heat transfer around the mold allowing 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.