Metal treatment – Stock – Magnetic
Reexamination Certificate
2005-07-19
2005-07-19
Sheehan, John P. (Department: 1742)
Metal treatment
Stock
Magnetic
C420S117000, C148S306000
Reexamination Certificate
active
06918966
ABSTRACT:
The object of the present invention is to provide a low iron loss and low noise grain-oriented electrical steel sheet for securing both low core loss and low noise of a transformer at the same time.The present invention relates to a grain-oriented electrical steel sheet containing Si: 1.0-4.0 wt % produced by controlling, with regard to εO, which is defined as a 0-p value when a grain-oriented electrical steel sheet is magnetized up to a saturated magnetic flux density, and ε17, which is defined as the value obtained by subtracting a 0-p value at the magnetization magnetic flux density of 1.7 T from a 0-p value at a saturated magnetic flux density, εOCand ε17L, which are absolute values deviated by forming a tension film and a forsterite film, and εOLand ε17L, which are absolute values deviated by irradiating laser after the film formation, in adequate ranges respectively, and further controlling λ17, which is a 0-p value at the magnetization magnetic flux density of 1.7 T, in the most appropriate range, when measuring a 0-p value of magnetostriction vibration in the rolling direction.
REFERENCES:
patent: 5478410 (1995-12-01), Ushigami et al.
patent: 5512110 (1996-04-01), Yoshitomi et al.
patent: 5782998 (1998-07-01), Ushigami et al.
patent: 5885371 (1999-03-01), Komatsubara et al.
patent: RE36423 (1999-12-01), Komatsubara et al.
patent: 6136456 (2000-10-01), Komatsubara et al.
patent: 6280862 (2001-08-01), Inokuti
patent: 6309473 (2001-10-01), Hayakawa et al.
patent: 6475304 (2002-11-01), Toda et al.
patent: 0 367 467 (1990-05-01), None
patent: 0 611 829 (1994-08-01), None
patent: 0 897 016 (1999-02-01), None
patent: 8-269562 (1996-10-01), None
patent: WO 00 73517 (2000-12-01), None
Arai Satoshi
Fujikura Masahiro
Kubota Takeshi
Mizokami Masato
Mogi Hisashi
Kenyon & Kenyon
Nippon Steel Corporation
Sheehan John P.
LandOfFree
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