Grain-oriented electromagnetic steel sheet

Details Grain-oriented electromagnetic steel sheet Grain-oriented electromagnetic steel sheet

2005-08-16

2005-08-16

Sheehan, John P (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

C148S111000

Reexamination Certificate

active

06929704

ABSTRACT:
A grain-oriented electromagnetic steel sheet having a multiplicity of fine grains having a diameter of about 3 mm or less on the surface of the steel sheet, in a numerical ratio of about 65% or more and of about 98% or less relative to the constituting grains that penetrate the sheet along the direction parallel to its thickness, and a method for producing the same. The fine grains are artificially created and regularly disposed with a random orientation in the steel sheet, and contribute to decreasing the strain susceptibility of the steel. More preferably, a treatment for finely dividing magnetic domains is applied on the surface of the steel sheet.Transformers based upon the steel sheet have excellent magnetic characteristics (iron loss and magnetic flux density) together with strain resistance, and the steel sheet has good practical device characteristics (building factor) after being assembled into a transformer.

REFERENCES:
patent: 3636579 (1972-01-01), Sakakura et al.
patent: 4203784 (1980-05-01), Kuroki et al.
patent: 4767469 (1988-08-01), Salsgiver et al.
patent: 4863531 (1989-09-01), Wada et al.
patent: 4960652 (1990-10-01), Wada et al.
patent: 5223048 (1993-06-01), Inokuti
patent: 5296051 (1994-03-01), Inokuti et al.
patent: 5718775 (1998-02-01), Komatsubara et al.
patent: 35 36 737 (1986-04-01), None
patent: 0 184 891 (1986-06-01), None
patent: 0 438 592 (1991-07-01), None
patent: 0 539 236 (1993-04-01), None
patent: 0 662 520 (1995-07-01), None
patent: 0 716 151 (1996-06-01), None
patent: 56 130454 (1981-10-01), None
patent: 06 245769 (1985-12-01), None
patent: 4-32517 (1992-04-01), None
patent: 06 089805 (1994-03-01), None
Journal of Applied Physics, “Development of Domain Refined Grain-Oriented Silicon Steel By Grooving”, vol. 73, No. 10 P.T. 02B, May 15, 1993, pp. 6609-6611.

Affiliated with

Also associated with

Rating

Grain-oriented electromagnetic steel sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Grain-oriented electromagnetic steel sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grain-oriented electromagnetic steel sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3459348