- Patent Title: Non-grain-oriented electrical steel strip or sheet, component manufactured from it and method for producing a non-grain-oriented electrical steel strip or sheet
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Application No.: US14118720Application Date: 2012-12-18
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Publication No.: US09637805B2Publication Date: 2017-05-02
- Inventor: Dorothee Dorner , Olaf Fischer , Karl Telger
- Applicant: ThyssenKrupp Steel Europe AG
- Applicant Address: DE Duisburg
- Assignee: ThyssenKrupp Steel Europe AG
- Current Assignee: ThyssenKrupp Steel Europe AG
- Current Assignee Address: DE Duisburg
- Agency: The Webb Law Firm
- Priority: EP12150315 20120105
- International Application: PCT/EP2012/075966 WO 20121218
- International Announcement: WO2013/102556 WO 20130711
- Main IPC: C21D8/02
- IPC: C21D8/02 ; C21D8/12 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/14 ; H01F1/16 ; H01F1/147

Abstract:
A non-grain-oriented electrical steel strip or sheet consisting of a steel which contains, in addition to iron and unavoidable impurities, (in wt. %) Si: 1.0-4.5%, Al: up to 2.0%, Mn: up to 1.0%, C: up to 0.01%, N: up to 0.01%, S: up to 0.012%, Ti: 0.1-0.5% P: 0.1-0.3%, wherein 1.0≦% Ti/% P≦2.0 applies for the % Ti/% P ratio. The NGO sheet or strip can be manufactured by cold rolling a hot strip of a steel having the previously mentioned composition into a cold strip and subjecting this cold strip to a final annealing process. Different variants of this final annealing process may be used to accentuate the properties of the strip or sheet. The non-grain-oriented electrical steel strip or sheet and components manufactured from such a sheet or strip for electrotechnical applications are characterized by increased strength and good magnetic properties.
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