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

1979-03-19

1980-07-22

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 315, 148113, H01F 104

Patent

active

042138043

ABSTRACT:
A process for producing electromagnetic silicon steel having a cube-on-edge orientation. 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 and from 2.5 to 4% silicon; casting the steel; hot rolling the steel; cold rolling the steel to a thickness no greater than 0.020 inch; heat treating the steel at a temperature between 1550.degree. and 2000.degree. F. in a hydrogen-bearing atmosphere; removing at least 0.02 micron of surface from each side of the steel; heat treating the steel at a temperature between 1300.degree. and 1550.degree. F. in a hydrogen-bearing atmosphere; applying a refractory oxide coating to the steel and final texture annealing the steel.

REFERENCES:
patent: 2875113 (1959-02-01), Fitz
patent: 4046602 (1977-09-01), Stanley
patent: 4054471 (1977-10-01), Datta

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