Finish annealing process for grain-oriented electrical steel str

Details Finish annealing process for grain-oriented electrical steel str Finish annealing process for grain-oriented electrical steel str

1980-11-21

1982-04-13

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 315, H01F 104

Patent

active

043245986

ABSTRACT:
In finish annealing process for a grain-oriented electrical steel strip or sheet, an improvement is disclosed which comprises coating the grain-oriented electrical steel strip or sheet with an annealing separator having a water content adjusted to not more than 10%, drying the coated strip or sheet, forming it into a strip coil, and finish annealing the strip coil within the inner cover of an annealing furnace while controlling the pressure of the gas atmosphere within the inner cover.

REFERENCES:
patent: 2906645 (1959-09-01), Carpenter et al.
patent: 3152930 (1964-10-01), Foster
patent: 3634148 (1972-01-01), Shin et al.
patent: 3640780 (1972-02-01), Stanley
patent: 3785882 (1974-01-01), Jackson
patent: 4160705 (1979-07-01), Arendt et al.
patent: 4177092 (1979-12-01), Thursby
The Making, Shaping and Treating of Steel, United States Steel, 7th ed. 1957 pp 412-419.

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