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:
Jun. 25, 2019
Filed:
Apr. 07, 2016
Iluka Resources Limited, Perth, Western Australia, AU;
University of Northern Iowa Research Foundation, Cedar Falls, IA (US);
Gerard Thiel, Cedar Falls, IA (US);
Sairam Ravi, Cedar Falls, IA (US);
Iluka Resources Limited, Perth, Western Australia, AU;
University of Northern Iowa Research Foundation, Cedar Falls, IA (US);
Abstract
A foundry sand comprises a blend that includes a silica sand and a zircon aggregate. The zircon aggregate exhibiting a sharp rise in linear thermal expansion coefficient in a temperature band above 1200° C. A method of casting an article in molten metal at a temperature above 1200° C. includes forming a single or multi-part mold for the article from the above-described foundry sand, admitting molten metal to the mold at a temperature such that at least one or more regions of the foundry sand in contact with the admitted metal are heated to a temperature within the temperature band, and cooling the mold and metal to obtain a cast article.