Hot-rolled strip intended for the production of non-grain oriented electrical sheet and a method for the production thereof

US7658807B2 · kind B2 · utility

Assignee

• Thyssenkrupp Steel AG · DE

Inventors

• Karl Ernst Friedrich · Moers, DE
• Wolfgang Rasim · Wesel, DE
• Joergen Schneider · Bochum, DE
• Rudolf Kawalla · Bottrop, DE
• Carl-Dieter Wuppermann · Krefeld, DE

Key dates

• Filing date: Oct 23, 2002
• Grant date: Feb 9, 2010
• Expiry date: Jan 20, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2211/005
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a hot-rolled steel strip for further processing to form non-grain oriented electrical sheet with the following composition (in % by weight) C: <0.02%, Mn: ≦1.2%, Si: 0.1-4.4%, Al 0.1-4.4%, wherein the sum formed from the Si content and twice the Al content is <5%, P: <0.15%, Sn: ≦0.20%, Sb: ≦0.20%, the remainder iron and unavoidable impurities, with a strip thickness which is at most 1.8 mm, and with a partially softened structure which is characterised by a high intensity for the α fibre (fibre representation of orientation distribution functions) in the region of 0° to 60°, wherein the ratio I112/I001 formed from the intensity I112 of the position (112) <110> to the intensity I001 of the position (001) <110> is >0.4 and the ratio I111/I001 formed from the intensity I111 of the position (111) <110> to the intensity I001 of the position (001) <110> is >0.2.