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:
Sep. 12, 2017
Filed:
Mar. 29, 2013
Jfe Steel Corporation, Tokyo, JP;
JFE Steel Corporation, , JP;
Abstract
A method of manufacturing a grain oriented electrical steel sheet uses austenite (γ)-ferrite (α) transformation which develops excellent magnetic properties, uses Tcalculated from equation (1) and performs the first pass of rough hot rolling at a temperature of (T−100)° C. or higher with a rolling reduction of 30% or more, and further uses Tcalculated from equation (2) and performs any one pass of finish hot rolling in a temperature range of (T±50)° C. with a rolling reduction of 40% or more:[° C.]=1383.98−73.29[% Si]+2426.33[% C]+271.68[% Ni]  (1)[° C.]=1276.47−59.24[% Si]+919.22[% C]+149.03[% Ni]  (2)where [% A] represents content of element 'A' in steel (mass %).