Method of producing non-oriented electromagnetic steel strip hav

Details Method of producing non-oriented electromagnetic steel strip hav Method of producing non-oriented electromagnetic steel strip hav

1993-03-29

1995-05-09

Dean, Richard O.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148112, 148120, 148121, C21D 946

Patent

active

054136407

ABSTRACT:
A method of producing a non-oriented electromagnetic steel strip by subjecting a low-carbon steel slab to hot-rolling, cold rolling at a small reduction and first annealing. In order to improve magnetic flux density and surface appearance of the product, specific conditions are employed so as to coarsen the crystalline structure to obtain a controlled and moderate crystal grain size after the annealing. The slab is cold-rolled at a rolling reduction of about 5 to 15% and is subjected to first annealing by heating at a rate of about 3.degree. C./sec or higher and holding the strip for about 5 to 30 seconds at 850.degree. C. to the A.sub.3 transformation temperature of the steel, while controlling the crystal grain size to about 100 to 200 .mu.m after first annealing.

REFERENCES:
patent: 4898627 (1990-02-01), Schoen

Affiliated with

Also associated with

Rating

Method of producing non-oriented electromagnetic steel strip hav does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1702450