Invention Grant
- Patent Title: Non-oriented electrical steel sheet and production process thereof
- Patent Title (中): 无取向电工钢板及其制造方法
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Application No.: US11988296Application Date: 2005-12-06
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Publication No.: US07922834B2Publication Date: 2011-04-12
- Inventor: Ichirou Tanaka , Hiroshi Fujimura , Hirokatsu Nitomi , Hiroyoshi Yashiki , Kouji Nishida , Hiroki Takamaru
- Applicant: Ichirou Tanaka , Hiroshi Fujimura , Hirokatsu Nitomi , Hiroyoshi Yashiki , Kouji Nishida , Hiroki Takamaru
- Applicant Address: JP Osaka
- Assignee: Sumitomo Metal Industries, Ltd.
- Current Assignee: Sumitomo Metal Industries, Ltd.
- Current Assignee Address: JP Osaka
- Agency: Clark & Brody
- Priority: JP2005-198794 20050707; JP2005-208597 20050719; JP2005-214625 20050725
- International Application: PCT/JP2005/022368 WO 20051206
- International Announcement: WO2007/007423 WO 20070118
- Main IPC: C21D8/12
- IPC: C21D8/12 ; C22C38/02 ; C22C38/12 ; C22C38/14

Abstract:
A main object thereof is to provide a non-oriented electrical steel sheet being excellent in surface characteristics and having both excellent mechanical characteristics and magnetic characteristics necessary for a rotor of rotating machines such as motors and generators which rotate at a high speed, and a method for producing the same. To achieve the object, the present invention provides a non-oriented electrical steel sheet comprising in % by mass: 0.06% or less of C; 3.5% or less of Si; from 0.05% or more to 3.0% or less of Mn; 2.5% or less of Al; 0.30% or less of P; 0.04% or less of S; 0.02% or less of N; at least one element selected from the group consisting of Nb, Ti, Zr and V in the predetermined range; and a balance consisting of Fe and impurities; and having a recrystallized fraction being less than 90%.
Public/Granted literature
- US20090202383A1 Non-Oriented Electrical Steel Sheet and Production Process Thereof Public/Granted day:2009-08-13
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