Processing for cube-on-edge oriented silicon steel

Details Processing for cube-on-edge oriented silicon steel Processing for cube-on-edge oriented silicon steel

1976-06-17

1977-10-18

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75123L, 148113, H01F 104

Patent

active

040544710

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 to a thickness no greater than 0.020 inch; decarburizing said steel to a carbon level below 0.005%; normalizing said steel at a temperature of from 1550.degree. to 2000.degree. F in a hydrogen-bearing atmosphere; applying a refractory oxide base coating to said steel; and final texture annealing said steel.

REFERENCES:
patent: 2534141 (1950-12-01), Morrill et al.
patent: 2875113 (1959-02-01), Fitz
patent: 3855021 (1974-12-01), Salsgiver et al.
patent: 3905843 (1975-09-01), Fiedler
patent: 3954521 (1976-05-01), Malagari

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