Global Patent Index - EP 1434890 A1

EP 1434890 A1 20040707 - METHOD FOR THE PRODUCTION OF NON-GRAIN ORIENTED ELECTRIC SHEETS

Title (en)

METHOD FOR THE PRODUCTION OF NON-GRAIN ORIENTED ELECTRIC SHEETS

Title (de)

VERFAHREN ZUM HERSTELLEN VON NICHTKORNORIENTIERTEN ELEKTROBLECHEN

Title (fr)

PROCEDE POUR PRODUIRE DES TOLES MAGNETIQUES A GRAINS NON ORIENTES

Publication

EP 1434890 A1 20040707 (DE)

Application

EP 02779469 A 20021009

Priority

  • DE 10150642 A 20011012
  • EP 0211286 W 20021009

Abstract (en)

[origin: WO03033746A1] The invention relates to a method for the production of a hot strip for the production of non-grain oriented electric sheets, comprising the following steps: melting of a steel consisting of the following in a liquid phase, expressed in wt. % or weight ppm, C: < 100 ppm, Si: 0.1 4.5 %, Al: 0.001 2.0 %, Mn: <= 1.5 %, Sn: <= 0.15 %, Sb: <= 0.15 %, P: <= 0.08 %, the remainder being iron and unavoidable impurities; the molten steel is cast to form thin slabs or to form a cast strip; the thin slabs or cast strip is continuously hot rolled directly after the casting of said thin slabs or strip in order to form a hot strip. According to the invention, the steel is cast and hot rolled in such a way that carburization is substantially avoided and that the carbon content of the hot strip obtained after said hot rolling is less than 100 ppm.

IPC 1-7

C21D 8/12; C22C 38/00

IPC 8 full level

C21D 8/12 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01)

CPC (source: EP)

C21D 8/1211 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01)

Citation (search report)

See references of WO 03033746A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

WO 03033746 A1 20030424; DE 10150642 A1 20030430; EP 1434890 A1 20040707

DOCDB simple family (application)

EP 0211286 W 20021009; DE 10150642 A 20011012; EP 02779469 A 20021009