Process for preparation of thin grain oriented electrical steel

Details Process for preparation of thin grain oriented electrical steel Process for preparation of thin grain oriented electrical steel

1988-11-08

1990-08-14

Andrews, Melvyn J.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148113, H01F 104

Patent

active

049484338

ABSTRACT:
Disclosed is a process for preparing a thin grain oriented electrical steel sheet having a final thickness of 0.05 to 0.25 mm from a silicon steel slab comprising 0.050 to 0.120% by weight of C, 2.8 to 4.0% by weight of Si and 0.05 to 0.25% by weight of Sn, wherein the starting silicon slab further comprises up to 0.035% by weight of S and 0.005 to 0.035% by weight of Se, with the proviso that the total amount of S and Se is in the range of 0.015 to 0.060% by weight, 0.050 to 0.090% by weight of Mn, with the proviso that the Mn content is in the range of {1.5.times.[content (% by weight) of S+content (% by weight) of Se[} to {4.5.times.[content (% by weight) of S+content (% by weight) of Se[} % by weight, 0.0050 to 0.0100% by weight of N, and {[27/14].times.content (% by weight) of N+0.0030} to {[27/14].times.content (% by weight) of N+0.0150} % by weight of acid-soluble Al.

REFERENCES:
patent: 3940299 (1976-02-01), Goto et al.
patent: 4698272 (1987-10-01), Inokuti et al.

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