C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
148/8
C21D 8/12 (2006.01)
Patent
CA 1249764
- 42 - GRAIN-ORIENTED ELECTRICAL STEEL SHEET HAVING A LOW WATT LOSS AND METHOD FOR PRODUCING SAME ABSTRACT OF THE DISCLOSURE Method for subdividing the magnetic domains of a grain-oriented electrical steel sheet is improved so that the watt loss can be further lessened and the watt-loss improving effect does not disappear during stress relief annealing. An intrudable means is formed on the finishing-annealed steel sheet on or in the vicinity of strain which promotes the intrusion of an intrudable means. Sb or Sb containing material is a preferred intrudable means and the laser irradiation is a preferred method for imparting the strain and also for attaining the removal of a surface coating.
492955
Egawa Takatoshi
Higuchi Seizun
Izaki Teruaki
Tanaka Osamu
Wada Toshiya
Goudreau Gage Dubuc
Nippon Steel Corporation
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