Method of sewageless metallization, especially galvanizing of a

Details Method of sewageless metallization, especially galvanizing of a Method of sewageless metallization, especially galvanizing of a

1980-04-17

1982-03-02

Kendall, Ralph S.

Coating processes

With pretreatment of the base

Etching, swelling, or dissolving out part of the base

427310, 427328, 427329, 427345, 148 615R, 148 62, C23C 102

Patent

active

043178480

ABSTRACT:
A method is described for metalizing, particularly zinc-coating of steel surfaces in such manner that the production of sewage and/or harmful waste products is substantially eliminated. The various steps employed include degreasing, etching, activation, and metallization of the metal substrate by successive immersion of the substrate in baths containing, respectively, the necessary components to perform the function of each bath and also the components of the preceding bath, recycling the wash products from each bath to a preceding bath containing the same components as said waste products, and rinsing the product with water only after completion of the successive method steps.

REFERENCES:
patent: 2992146 (1961-07-01), Low
patent: 3906895 (1975-09-01), Morino
patent: 4130446 (1978-12-01), Murakami

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