Process for producing a grain-oriented electrical steel sheet ha

Details Process for producing a grain-oriented electrical steel sheet ha Process for producing a grain-oriented electrical steel sheet ha

1985-10-25

1987-09-08

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148113, 148308, H01F 104

Patent

active

046921931

ABSTRACT:
A thin-gauge (0.10-0.23 mm thick) grain-oriented electrical steel sheet is produced by a process characterized by a decarburization which is carried out after the hot-rolling and before the final cold-rolling, after which the known, decarburization annealing and finishing annealing are carried out. The steel composition is adjusted to induce the secondary recrystallization by the AlN inhibitor. The reduction at the final cold-rolling is determined to be high to obtain a high magnetic flux density but tends to instabilize the secondary recrystallization unless the inventive decarburization is carried out.

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patent: 2287467 (1942-06-01), Carpenter et al.
patent: 3218202 (1965-11-01), Ganz
patent: 3278348 (1966-10-01), Foster et al.
patent: 3855020 (1974-12-01), Salsgiver et al.
patent: 3905842 (1975-09-01), Grenoble
patent: 3954521 (1976-05-01), Malagari
patent: 4517032 (1985-05-01), Goto et al.

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