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. 11, 2007
Filed:
Jul. 02, 2003
Paula L. Kolek, Tarentum, PA (US);
David H. Deyoung, Export, PA (US);
David J. Roha, Greensburg, PA (US);
Patricia A. Stewart, Pittsburgh, PA (US);
Michael A. Easley, Arnold, PA (US);
Jorge A. Ramos Cruz, Vandergrift, PA (US);
Larry F. Wieserman, Apollo, PA (US);
Paula L. Kolek, Tarentum, PA (US);
David H. DeYoung, Export, PA (US);
David J. Roha, Greensburg, PA (US);
Patricia A. Stewart, Pittsburgh, PA (US);
Michael A. Easley, Arnold, PA (US);
Jorge A. Ramos Cruz, Vandergrift, PA (US);
Larry F. Wieserman, Apollo, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
A method of producing aluminum castings which includes the steps of casting a molten alloy, contacting the surface of the molten alloy with a humidified atmosphere and solidifying the alloy. The method is particularly suited for aluminum-magnesium alloys such as AA 5XXX and 7XXX series alloys. In addition to reducing the thickness of the surface oxide layer formed during casting, the method also provides improved surface quality of cast products and reduces subsequent remedial re-work or scalping. An improved aluminum-magnesium cast alloy product is also disclosed.