Silicon steel and processing therefore

Details Silicon steel and processing therefore Silicon steel and processing therefore

1976-06-17

1978-07-25

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 315, H01F 104

Patent

active

041027132

ABSTRACT:
A process for producing electromagnetic silicon steel having a cube-on-edge orientation and a permeability of at least 1870 (G/O.sub.e) at 10 oersteds. The process includes the steps of: preparing a melt of silicon steel containing from 0.02 to 0.06% carbon, from 0.0006 to 0.0080% boron, up to 0.0100% nitrogen, no more than 0.008% aluminum and from 2.5 to 4.0% silicon; casting said steel; hot rolling said steel; cold rolling said steel; decarburizing said steel; applying a refractory oxide coating containing both boron and an oxide less stable than SiO.sub.2 at temperatures up to 2150.degree. F; and final texture annealing said steel.

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patent: 3957546 (1976-05-01), Fiedler
patent: 4000015 (1976-12-01), Malagari
patent: 4030950 (1977-06-01), Shilling et al.

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