Process for producing non-directional electric steel sheets free

Details Process for producing non-directional electric steel sheets free Process for producing non-directional electric steel sheets free

1973-07-06

1978-01-03

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 2, 148 3155, 148112, H01F 104

Patent

active

040664791

ABSTRACT:
Process for producing non-directional electric steel sheets free from ridging, comprising preparing slabs by continuous casting from molten steel comprising not more than 0.04% C, 1.5 to 4.0% Si, not more than 1.0% Al, the balance being Fe and unavoidable impurities, hot rolling, cold rolling and annealing the slabs, characterized in that the slab is subjected to breaking-down with a reduction rate between 10 to 70% in the sheet thickness direction at a temperature between 1000.degree. and 1300.degree. C, and subsequently the required treatments are done.

REFERENCES:
patent: 2378321 (1945-06-01), Pakkala
patent: 3061486 (1962-10-01), Jackson
patent: 3203839 (1965-08-01), Takahashi
patent: 3287183 (1966-11-01), Taguchi et al.
patent: 3632456 (1972-01-01), Sakakura et al.
patent: 3764406 (1973-10-01), Littmann

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