Silicon steel suitable for production of oriented silicon steel

Details Silicon steel suitable for production of oriented silicon steel Silicon steel suitable for production of oriented silicon steel

1975-10-09

1976-10-19

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148111, 148112, H01F 104

Patent

active

039869024

ABSTRACT:
A process for producing grain oriented silicon sheet steel having excellent magnetic properties in which the manganese and sulfur contents are critically controlled so that the product of manganese content, in weight percent, times sulfur content, in weight percent, is within the range 0.0007 to 0.0012, and aluminum is added to the deoxidized steel just prior to teeming to minimize the formation of insoluble oxide precipitates within the body of the teemed steel, the amount of aluminum added being limited so as to avoid appreciable aluminum remaining in solution in the teemed steel. The slab resulting from the above steel can then be preheated to a temperature of 2,130.degree. to 2,390.degree. F prior to hot rolling without sacrificing magnetic quality.

REFERENCES:
patent: 3159511 (1964-12-01), Taguchi et al.
patent: 3671337 (1972-06-01), Kumai et al.
patent: 3695946 (1972-10-01), Demeaux
patent: 3764406 (1973-10-01), Littmann

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