Global Patent Index - EP 0378131 A2

EP 0378131 A2 19900718 - A method of manufacturing a grain-oriented electrical steel strip.

Title (en)

A method of manufacturing a grain-oriented electrical steel strip.

Title (de)

Verfahren zum Herstellen eines kornorientierten Elektrostahlbandes.

Title (fr)

Procédé de fabrication d'une bande en acier électrique à grain orienté.

Publication

EP 0378131 A2 19900718 (EN)

Application

EP 90100231 A 19900105

Priority

  • JP 177889 A 19890107
  • JP 8650289 A 19890405

Abstract (en)

Provided is a method of manufacturing a grain-oriented electrical steel strip having excellent magnetic properties, that is, high magnetic flux density in particular, which is characterized in that the average diameter d of grain (primary recrystallization grain) of a material before final annealing is set to a value greater than 15 mu m and the coefficient sigma * of deviation in grain diameter is set to a value less than 0.6. According to the present invention, the aggregation to the {110}<001> orientation of a product can be made to be remarkably high so as to obtain a product having a high magnetic flux density B8 which is equal to or greater than 1.88 tesla.

IPC 1-7

C21D 8/12

IPC 8 full level

C21D 3/04 (2006.01); C21D 8/12 (2006.01); C21D 11/00 (2006.01)

CPC (source: EP)

C21D 3/04 (2013.01); C21D 8/12 (2013.01); C21D 11/00 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1272 (2013.01)

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0378131 A2 19900718; EP 0378131 A3 19920930; EP 0378131 B1 19970528; DE 69030771 D1 19970703; DE 69030771 T2 19970911

DOCDB simple family (application)

EP 90100231 A 19900105; DE 69030771 T 19900105