EP 0601549 A1 19940615 - Electrical steel sheet.
Title (en)
Electrical steel sheet.
Title (de)
Elektroblech.
Title (fr)
TÔle d'acier électrique.
Publication
Application
Priority
- JP 2856293 A 19930125
- JP 35185992 A 19921208
Abstract (en)
An electrical steel sheet contains 0.01 wt.% or less C, 4 to 10 wt.% Si, 0.5 wt.% or less Mn, 0.01 wt.% or less P, 0.01 wt.% or less S, 0.2 wt.% or less Sol. Al, 0.01 wt.% or less N, 0.02 wt.% or less O, and the balance being Fe and inevitable impurities, the electrical steel sheet containing crystal grains and grain boundaries, said grain boundary having an oxygen content of 30 atomic % or less. The electrical steel sheet may contain 4 to 10 wt.% (Si + Al) instead of 4 to 10 wt.% Si. The grain boundaries may have the oxygen content of 30 atomic % or less and a sulfur content of 0.2 atomic %.
IPC 1-7
IPC 8 full level
C21D 8/12 (2006.01); C22C 38/02 (2006.01); C21D 1/76 (2006.01); C21D 1/773 (2006.01)
CPC (source: EP KR)
C21D 8/12 (2013.01 - KR); C21D 8/1272 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C21D 1/76 (2013.01 - EP); C21D 1/773 (2013.01 - EP); C21D 8/1227 (2013.01 - EP); C21D 8/1255 (2013.01 - EP)
Citation (search report)
- [XP] EP 0526834 A1 19930210 - NIPPON KOKAN KK [JP]
- [A] EP 0254932 A2 19880203 - ALLIED CORP [US]
- [X] PATENT ABSTRACTS OF JAPAN vol. 9, no. 158 (M - 393) 3 July 1985 (1985-07-03)
- [X] PATENT ABSTRACTS OF JAPAN vol. 15, no. 27 (C - 0797) 22 January 1991 (1991-01-22)
- [X] PATENT ABSTRACTS OF JAPAN vol. 15, no. 478 (C - 0891) 4 December 1991 (1991-12-04)
- [A] PATENT ABSTRACTS OF JAPAN vol. 7, no. 95 (C - 163) 23 August 1983 (1983-08-23)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0601549 A1 19940615; EP 0601549 B1 19970716; CN 1035889 C 19970917; CN 1089663 A 19940720; DE 69312233 D1 19970821; DE 69312233 T2 19971218; KR 940014852 A 19940719; KR 960006447 B1 19960516
DOCDB simple family (application)
EP 93119720 A 19931207; CN 93120804 A 19931208; DE 69312233 T 19931207; KR 930026779 A 19931207