Method for producing non-grain oriented magnetic sheet steel

US6503339B1 · kind B1 · utility

Assignee

• THYSSEN KRUPP STAHL AG · DE

Inventors

• Hans Pircher · Oberndorf bei Salzburg, AT
• Rudolf Kawalla · Bottrop, DE
• Manfred Espenhahn · Essen, DE
• Brigitte Hammer · Voerde, DE
• Klaus Josef Peters · Krefeld, DE
• Jürgen Schneider · Kirchzarten, DE
• Carl-Dieter Wuppermann · Krefeld, DE

Key dates

• Filing date: Nov 7, 2000
• Grant date: Jan 7, 2003
• Expiry date: Nov 7, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D8/1233
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a method to produce non-grain-oriented magnetic steel sheet made of thin-slab or slab casting with low specific total loss and high polarisation and favourable mechanical properties. It is a characteristic of the invention that the steel slabs are hot rolled either directly from the casting heat or after a reheating to T≧900 ° C. and two or more metal forming passes are performed in the two-phase region austenite/ferrite in the course of finishing rolling.