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. 27, 1988
Filed:
Nov. 19, 1987
Applicant:
Inventors:
Stephen C Libby, Murrysville, PA (US);
G Edward Graddy, Jr, Murrysville, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
164487 ; 164138 ; 164459 ; 164529 ;
Abstract
A process for continuous direct chill casting of aluminum alloys, particularly aluminum-lithium alloys. The molten alloy is cast in a mold containing a header comprising delaminated vermiculite or spodumene or lithium aluminate. The header preferably comprises delaminated vermiculite blended with wollastonite, lime, silica, and wood fiber. The mixture is slurried with water, molded into shape, compressed to expel water, steam cured, and dried. The header forms ingots of good quality and has excellent resistance to attack by molten aluminum-lithium alloys.