Grain-oriented silicon steel sheet having a low iron loss free f

Details Grain-oriented silicon steel sheet having a low iron loss free f Grain-oriented silicon steel sheet having a low iron loss free f

1989-12-08

1992-12-22

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148113, 148307, 148308, 420117, H01F 104

Patent

active

051731290

ABSTRACT:
A grain-oriented silicon steel sheet having a low iron loss free from deterioration due to the stress-relief annealing, can be obtained by forming on its surface a forsterite film locally having regions, which have a thickness different from that of the remaining regions in the film, or locally having filmless regions which do not coat the steel sheet surface.

REFERENCES:
patent: 3990923 (1976-11-01), Takashima et al.

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