Metal treatment – Compositions – Heat treating
Patent
1975-05-23
1977-06-28
Satterfield, Walter R.
Metal treatment
Compositions
Heat treating
148113, C22B 3300, H01F 104
Patent
active
040323668
ABSTRACT:
A process for producing grain-oriented silicon steel, and the steel produced thereby. The process includes the steps of: preparing a melt of silicon steel; casting the steel; hot rolling the steel; cold rolling the steel; decarburizing the steel; final texture annealing the steel; coating the steel with an aqueous solution comprised of from 4 to 30% of phosphate ion, up to 6% magnesium ion, 5 to 34% colloidal silica and 0.15 to 6% hexavalent chromium; and curing the coated steel at a temperature of at least 1200.degree. F.
REFERENCES:
patent: 2351922 (1944-06-01), Burgwin
patent: 2501846 (1950-03-01), Gifford
patent: 2809137 (1957-10-01), Robinson
patent: 3418710 (1968-12-01), Seidl et al.
patent: 3562011 (1971-02-01), Hirst et al.
patent: 3575739 (1971-04-01), Fiedler
patent: 3582409 (1971-06-01), Kohler
patent: 3594240 (1971-07-01), Foster et al.
patent: 3687742 (1972-08-01), Foster et al.
patent: 3720549 (1973-03-01), Hirst et al.
patent: 3793073 (1974-02-01), Kitayama et al.
patent: 3996073 (1976-12-01), Evans
Allegheny Ludlum Industries, Inc.
Dropkin Robert F.
Gioia Vincent G.
Satterfield Walter R.
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