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. 08, 2007
Filed:
Apr. 08, 2004
Yousuke Kurosaki, Futtsu, JP;
Takeshi Kubota, Futtsu, JP;
Hideaki Yamamura, Futtsu, JP;
Takashi Arai, Futtsu, JP;
Eiichiro Ishimaru, Hikari, JP;
Yoshihiro Arita, Kitakyushu, JP;
Isao Suichi, Hikari, JP;
Kenji Kosuge, Himeji, JP;
Yousuke Kurosaki, Futtsu, JP;
Takeshi Kubota, Futtsu, JP;
Hideaki Yamamura, Futtsu, JP;
Takashi Arai, Futtsu, JP;
Eiichiro Ishimaru, Hikari, JP;
Yoshihiro Arita, Kitakyushu, JP;
Isao Suichi, Hikari, JP;
Kenji Kosuge, Himeji, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A quench solidification method, wherein a steel cast strip having a mean grain size 50 μm or more is prepared and then the steel cast strip is rolled to produce a non-oriented electrical steel sheet having high magnetic flux density in both L and C directions. However the magnetic flux density reduces when the cold reduction rate exceeds 70%. To avoid this problem the non-oriented electrical steel sheet is manufactured with a ratio of at least 4 of the integrated intensity of the {100} plane for a given sample of steel to the integrated intensity of {100} plane for a 'random' sample in which crystal grains have random orientations; and a cold reduction rate of the cold-rolling is between 70% and 85%. The superheating degree of the molten steel can be 70° C. or more.