Process for producing grain-oriented silicon steel strip

Details Process for producing grain-oriented silicon steel strip Process for producing grain-oriented silicon steel strip

1980-08-15

1983-02-01

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148110, H01F 104

Patent

active

043714056

ABSTRACT:
In a process for producing a grain-oriented silicon steel strip, comprising the steps of: hot rolling, annealing, if necessary; heavy cold rolling; decarburization-annealing, and; final annealing, an improvement which comprises controlling a coiling temperature after the finish rolling of the hot rolling step within a range of from 700.degree. to 1000.degree. C. As a result of the coiling temperature control, the annealing of the hot rolled strip can be simplified or omitted, while the behavior of a grain-growth inhibitor is equivalent to that in the conventional process including the annealing step. The magnetic flux density of the material produced by the process of the present invention is excellent, notwithstanding the simplification or omission of the annealing.

REFERENCES:
patent: 3575739 (1971-04-01), Fiedler
patent: 3636579 (1972-01-01), Sakakura et al.
patent: 3846187 (1974-11-01), Sakakura et al.
patent: 4115161 (1978-09-01), Datta
patent: 4116729 (1978-09-01), Katoh et al.
patent: 4123298 (1978-10-01), Kohler et al.
patent: 4231818 (1980-11-01), Henke

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