Metal treatment – Compositions – Heat treating
Patent
1980-04-14
1982-02-23
Kendall, Ralph S.
Metal treatment
Compositions
Heat treating
148 615R, C23F 710
Patent
active
043167519
ABSTRACT:
Disclosed is a process for applying an electrical insulating coating onto a ferrous metal surface and the ferrous metal surface with the coating thereon. The insulating coating comprises phosphate and nitrate applied in a thin film of from about 200 mg to about 400 mg coating weight per square foot of ferrous metal surface coated.
REFERENCES:
patent: 2465247 (1949-03-01), McBride
patent: 3114661 (1963-12-01), Palm
Prescott Thomas J.
Wetzel Raymond L.
Hooker Chemicals & Plastics Corp.
Kendall Ralph S.
Kluegel Arthur E.
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