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:
May. 10, 2011
Filed:
Dec. 08, 2005
Riki Okamoto, Tokai, JP;
Noriyuki Hishinuma, Tokai, JP;
Hidenori Miyata, Tokai, JP;
Hirokazu Taniguchi, Futtsu, JP;
Riki Okamoto, Tokai, JP;
Noriyuki Hishinuma, Tokai, JP;
Hidenori Miyata, Tokai, JP;
Hirokazu Taniguchi, Futtsu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A method for controlling the cooling of a steel sheet characterized by controlling the end-of-cooling temperature in a cooling process from the Aeor above temperature of the steel sheet, during which; preliminarily obtaining enthalpies (Hγ and Hα) of an austenite phase and ferrite phase respectively at some temperature, obtaining a gynamic enthalpy (Hsys) defined by formula (1) with an untransformed fraction (Xγ) of austenite in accordance with a target temperature pattern, predicting the temperature by using a gradient of this dynamic enthalpy with respect to temperature as a dynamic specific heat and controlling the cooling of the steel sheet:sys=γ(γ)+α(1−γ).  formula (1)
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