Manufacturing method of grain-oriented electrical steel sheet
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United States of America Patent
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Feb 5, 2013
Grant Date -
May 3, 2012
app pub date -
Jul 13, 2010
filing date -
Jul 13, 2009
priority date (Note) -
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Abstract
A silicon steel material is heated in a predetermined temperature range according to contents of B, N, Mn, S, and Se (step S1), and is subjected to hot rolling (step S2). Further, a finish temperature Tf of finish rolling in the hot rolling is performed in a predetermined temperature range according to the content of B. Through these treatments, a certain amount of BN is made to precipitate compositely on MnS and/or MnSe.
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