Surface pretreatment of steel prior to enameling

Details Surface pretreatment of steel prior to enameling Surface pretreatment of steel prior to enameling

1974-11-25

1976-05-11

Kendall, Ralph S.

Coating processes

With pretreatment of the base

Metal base

427309, 427330, 134 28, 134 41, C23G 106, C23D 300

Patent

active

039565360

ABSTRACT:
A method for the surface treatment of steel, preferably non-decarburized steel, capable of being enameled comprises the steps of degreasing the metal surface; optionally descaling the metal surface in an acid bath; treating the metal surface with an aqueous solution containing from 0.1% to 5% by weight of at least one complex former which prevents the precipitation of heavy metal cations at the pH employed; intensively pickling the metal surface; and nickelplating the metal surface.

REFERENCES:
patent: 2981633 (1961-04-01), Davis et al.
patent: 3317340 (1967-05-01), Ziehr et al.
patent: 3368913 (1968-02-01), Ziehr et al.

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