Non-oriented electrical steel sheet having a low watt loss and a

Details Non-oriented electrical steel sheet having a low watt loss and a Non-oriented electrical steel sheet having a low watt loss and a

1984-05-25

1987-04-28

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148307, 420117, 420121, H01F 104

Patent

active

046611746

ABSTRACT:
In the production of non-oriented electrical steel sheets, it has been attempted to decrease the watt loss, e.g., by adding Sn to silicon steels, but in such a case the relationship between the watt loss and the magnetic flux density falls within the curves 1 and 1' in FIG. 1. The addition of boron is therefore unsatisfactory for meeting the recent demand for improving the magnetic properties of a non-oriented electrical steel sheet over those indicated by the curve 3.
In the present invention, the combined addition of Sn and B and/or sol. Al results in the development of (110) and (100) textures, which are desirable for the magnetic properties.
A non-oriented electrical steel sheet according to the present invention consists of:

REFERENCES:
patent: 3940299 (1976-04-01), Goto et al.
patent: 4046602 (1977-09-01), Stanley
patent: 4204890 (1980-05-01), Irie et al.
patent: 4293336 (1981-10-01), Matsumura et al.
patent: 4338143 (1982-07-01), Shimoyama et al.

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