EP 0084980 A2 19830803 - Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same.
Title (en)
Non-oriented electrical steel sheet having a low watt loss and a high magnetic flux density and a process for producing the same.
Title (de)
Nicht-kornorientiertes Elektroblech mit niedrigen Wattverlusten und hoher Magnetflussdichte und Verfahren zu seiner Herstellung.
Title (fr)
TÔle magnétique non-orientée à pertes de watt peu élevées et présentant une densité de flux magnétique élevée, ainsi que procédé pour sa fabrication.
Publication
Application
Priority
- JP 939883 A 19830125
- JP 1021182 A 19820127
Abstract (en)
In the production of non-oriented electrical steel sheets, it has been attempted to decrese the watt loss, e.g. by adding Sn into silicon steels, but in such a case the relationship between the watt loss and magnetic flux density falls within the curves 1 and 1 min in Fig. 1. The addition of boron is therefore unsatisfactory for meeting the recent demands, for improving the magnetic properties of a non-oriented electrical steel sheet over those indicated by the curve 3. In the present invention, the combined addition Sn with B and/or sol. Al results in development of (110) and (100) textures which are desirable for the magnetic properties. A non-oriented electrical steel sheet according to the present invention, contains 0.015% of C at the highest, from 0.3 to 2.0% of Si, from 0.005 to 0.10% of sol. Al, from 0.02% to 0.20% of Sn, 0.007% of N at the highest, and 0.005% of B at the highest, the weight ratio of B content/N content being from 0.5 to 1.5, said non-oriented electrical sheet being produced by a process comprising an annealing of a hot-rolled steel strip. Instead of B, an appreciable amount of sol. Al may be contained in said sheet, when Mn content is from more than 1.0% to 1.5%.
IPC 1-7
IPC 8 full level
C21D 8/12 (2006.01); C22C 38/02 (2006.01); H01F 1/147 (2006.01); H01F 1/16 (2006.01)
CPC (source: EP)
C21D 8/1261 (2013.01); C22C 38/02 (2013.01); H01F 1/14775 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB IT
DOCDB simple family (publication)
EP 0084980 A2 19830803; EP 0084980 A3 19830914; EP 0084980 B1 19860108; AT E17376 T1 19860115; AU 1076583 A 19830804; AU 4568185 A 19851107; AU 551071 B2 19860417; DE 3361738 D1 19860220
DOCDB simple family (application)
EP 83300393 A 19830126; AT 83300393 T 19830126; AU 1076583 A 19830126; AU 4568185 A 19850731; DE 3361738 T 19830126