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:
Jul. 21, 1987
Filed:
Oct. 04, 1985
John E Flowers, Riverside, CA (US);
Christopher A Romanowski, Lake Arrowhead, CA (US);
Dennis M Smith, Crestline, CA (US);
Hunter Engineering Company, Inc., Riverside, CA (US);
Abstract
A method is provided for continuously casting aluminum alloys particularly useful for computer memory disk stock by a combination of casting at thinner gauges and much higher speeds than usual. Sheet quality is vastly improved, surface ripples are avoided, and casting rate increased as much as 50%. The method is characterized by the thickness of the cast sheet being in the range of from 4 to 6 millimeters and the casting rate being in the range of from 0.8 to 1.8 meters per minute. Chlorides in the molten metal are coalesced and oxides filtered to keep the inclusion rate in the cast sheet very low.