Method for forming a chemical conversion phosphate film on the s

Details Method for forming a chemical conversion phosphate film on the s Method for forming a chemical conversion phosphate film on the s

1984-08-16

1986-01-21

Silverberg, Sam

Metal treatment

Compositions

Heat treating

148 615Z, C23F 710

Patent

active

045655855

ABSTRACT:
The present invention proposes a method for forming a chemical conversion phosphate film on the surface of steel, characterized in that the temperature of the conversion bath is from 0.degree. C. to 40.degree. C., the hydrogen-ion concentration (pH) of the conversion bath is in the range of from pH 2.2 to pH 3.5, and the oxidation reduction potential of the conversion bath is from 0 mV to 700 mV (normal hydrogen electrode potential).
According to the present invention, normal-temperature phosphating and automatic bath control are attained.

REFERENCES:
patent: 3312189 (1967-03-01), McVey
patent: 3369928 (1968-02-01), Arlow
patent: 3515094 (1970-06-01), McVey
patent: 3674672 (1972-07-01), Whitesell
patent: 4089710 (1978-05-01), Cooke
patent: 4110127 (1978-08-01), Longuepee
patent: 4140551 (1979-02-01), Jones
patent: 4182638 (1980-01-01), Cook
patent: 4233087 (1980-11-01), Cooke
Woods et al.: "Zinc Phosphating", Metal Finishing, Apr. 1979, pp. 56-60.
Gutcho, Ed.: "Phosphatizing", Metal Surface Treatment, Noyes Data Corporation, New Jersey, 1982, pp. 3-13.
"Uber den Einflub einer Vorbehandlung vor dem Phosphatieren . . . ", Werkstoffe und Korrosion, Jahygang 1963, Heft. 7, pp. 566-574, (no translation).
"Uber die Wesentlichen Merkmale . . . Reaktionsmechanismus in Letzteren", Werkstoffe und Korrosion, Jahrgang 1963, Heft. 4, pp. 273-279, (no translation).
"Electrochemische und Kristallisationserscheinungen . . . Metallen", Neue Hutte, 14 Jg. Heft 4, pp. 238-241, (no translation).
"Die Kinetik der Bildung von Phosphatuberzugen," Fette. Seifen. Anstrichmittel. 70 Jahrgang Nr. 8, pp. 549-556, (no translation).

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