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:
Apr. 26, 1977
Filed:
Mar. 04, 1976
Applicant:
Inventors:
William C Setzer, Creve Coeur, MO (US);
Harvey P Cheskis, New Haven, CT (US);
Michael J Pryor, Woodbridge, CT (US);
Assignee:
Swiss Aluminium Ltd., Chippis, CH;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 / ; 75147 ; 75148 ; 148 / ;
Abstract
The present invention comprises an improved process for the preparation of aluminum base alloys containing magnesium and silicon in wrought form, and particularly as tread plate which includes the steps of casting, homogenizing, hot rolling within a critical temperature and time range and cooling at a rate greater than a critical rate and before a critical delay time after said hot rolling step. The resulting product can be artificially aged without the need for a separate solution heat treatment and possesses improved tensile properties, surface appearance and corrosion resistance.