Grain-oriented electrical steel sheet having stable magnetic pro

Details Grain-oriented electrical steel sheet having stable magnetic pro Grain-oriented electrical steel sheet having stable magnetic pro

1985-11-12

1988-06-14

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148113, H01F 104

Patent

active

047509490

ABSTRACT:
A grain-oriented electrical steel sheet having a low watt loss after stress relief annealing is proposed. The steel sheet, which is final texture annealed, and to which tension is imparted, has a number of recessed parts on the surface thereof forming indentations into the steel sheet body having a depth in the range of from 0.01 to 0.1 mm. The recessed parts are filled with a composition having a coefficient of thermal expansion smaller than that of the steel sheet body. From the recessed parts and the composition the magnetic domains are subdivided.

REFERENCES:
patent: 4318758 (1982-03-01), Kuroki et al.
patent: 4363677 (1982-12-01), Ichiyama et al.

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