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:
Oct. 10, 2006
Filed:
Aug. 04, 2005
Lazar Strezov, Adamstown Heights, AU;
Kannappar Mukunthan, Rankin Park, AU;
Walter Blejde, Brownsburg, IN (US);
Rama Mahaptra, Brighton-Le-Sands, AU;
Lazar Strezov, Adamstown Heights, AU;
Kannappar Mukunthan, Rankin Park, AU;
Walter Blejde, Brownsburg, IN (US);
Rama Mahaptra, Brighton-Le-Sands, AU;
Nucor Corporation, Charlotte, NC (US);
Abstract
A cast carbon steel strip is prepared by continuously casting in a twin roll caster and cooling to transform the strip from austenite to ferrite at a temperature range between 400° C. and 850° C. at cooling the strip to transform the austenite to ferrite within a temperature range between 400° C. and 850° C. at a cooling rate of greater than 100° C./sec without inhibiting the cooling rate to form cast strip that is less than about 1% austenite and has a packet size of at least 10% greater than 300 μm, is either (i) a mixture of polygonal ferrite and low temperature transformation products or (ii) predominantly low temperature transformation products, and has a yield strength of at least 450 MPa. The cast strip before cooling is passed through a hot rolling mill to reduce the thickness of strip by at least 15% and up to 50%.