Method for producing non-oriented steel sheets

Details Method for producing non-oriented steel sheets Method for producing non-oriented steel sheets

1989-03-27

1992-05-26

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148120, H01F 104

Patent

active

051164353

ABSTRACT:
A method for producing a non-oriented electrical steel sheet with precise thickness and homogeneous magnetic property comprising the steps of: making a steel ingot which has: 0.01 wt. % or less C, 0.003 wt. % or less N, 0.01 to 1.0 wt. % Mn, Al and Si satisfying, in wt. %, the formulas of: ##EQU1## provided that (Si %) represents the Si (wt. %) and (Al %) represents Al content (wt. %), and the balance being Fe and inevitable impurities to produce a steel slab; hot-rolling the slab at a finishing temperature of 700.degree. to 900.degree. C. into a steel strip and coiling the hot rolled strip; and cold-rolling the hot-rolled strip into a cold-rolled strip, followed by annealing the cold-rolled strip.

REFERENCES:
patent: 3287184 (1966-11-01), Koh
patent: 3867211 (1975-02-01), Easton
patent: 4046602 (1977-09-01), Stanley

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