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. 04, 2007
Filed:
Jul. 12, 2005
Men G Chu, Export, PA (US);
Ho Yu, Murrysville, PA (US);
Alvaro Giron, Murrysville, PA (US);
Ken Kallaher, Trafford, PA (US);
Men G Chu, Export, PA (US);
Ho Yu, Murrysville, PA (US);
Alvaro Giron, Murrysville, PA (US);
Ken Kallaher, Trafford, PA (US);
ALCOA Inc., Pittsburgh, PA (US);
Abstract
Molten metal is injected uniformly into a horizontal mold from a feed chamber in a horizontal direction at a controlled rate, directly on top of the metal already within the mold. A cooling medium is applied to the bottom surface of the mold, with the type and flow rate of the cooling medium being varied to produce a controlled cooling rate throughout the casting process. The rate of introduction of molten metal and the flow rate of the cooling medium are both controlled to produce a relatively uniform solidification rate within the mold, thereby producing a uniform microstructure throughout the casting, and low stresses throughout the casting.