Method for producing coated electrical steel sheets having excel

Details Method for producing coated electrical steel sheets having excel Method for producing coated electrical steel sheets having excel

1975-10-14

1977-06-28

Hoffman, James R.

Coating processes

Electrical product produced

Metallic compound coating

148 62, 427104, 427388C, B05D 302, B05D 512, B05D 714

Patent

active

040326756

ABSTRACT:
Coated electrical steel sheets having excellent punchability, weldability and insulation resistance are produced by applying an electrical steel sheet with a treating dispersion obtained by compounding the particle separating resin emulsion and the compatible resin to an aqueous solution containing chromic acid in the particularly defined amount and baking the thus applied steel sheets. To the treating dispersion may be added saccharides or polyhydric alcohols as a reducing agent or boric acid or phosphoric acid.

REFERENCES:
patent: 2902390 (1959-09-01), Bell
patent: 3053691 (1962-09-01), Hartman et al.
patent: 3053692 (1962-09-01), Pocock
patent: 3632362 (1972-01-01), Urushiyama et al.

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