EP 0143548 B1 19880824 - GRAIN-ORIENTED SILICON STEEL SHEET HAVING A LOW IRON LOSS FREE FROM DETERIORATION DUE TO STRESS-RELIEF ANNEALING AND A METHOD OF PRODUCING THE SAME
Title (en)
GRAIN-ORIENTED SILICON STEEL SHEET HAVING A LOW IRON LOSS FREE FROM DETERIORATION DUE TO STRESS-RELIEF ANNEALING AND A METHOD OF PRODUCING THE SAME
Publication
Application
Priority
- JP 20127983 A 19831027
- JP 20128083 A 19831027
- JP 20128183 A 19831027
Abstract (en)
[origin: EP0143548A1] A grain-oriented silicon steel sheet having a low iron loss free from deterioration due to the stress-relief annealing, can be obtained by forming on its surface a forsterite film locally having regions, which have a thickness different from that of the remaining regions in the film, or locally having filmless regions which do not coat the steel sheet surface.
IPC 1-7
IPC 8 full level
C21D 8/12 (2006.01); H01F 1/147 (2006.01); H01F 1/16 (2006.01)
CPC (source: EP)
C21D 8/1294 (2013.01); H01F 1/14783 (2013.01); H01F 1/16 (2013.01)
Citation (examination)
PROCEEDINGS OF THE SYMPOSIUM ON MAGNETISM AND MAGNETIC MATERIALS, 9th-12th December 1975, Philadelphia, pages 574-575, American Institute of Physics, New York, US; T. IRIE et al: "Effect of insulating coating on domain structure in grain oriented 3% Si-Fe sheet as observed with a high voltage scanning electron microscope"
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0143548 A1 19850605; EP 0143548 B1 19880824; DE 3473679 D1 19880929
DOCDB simple family (application)
EP 84307320 A 19841024; DE 3473679 T 19841024