Process for phosphating metal surfaces

Details Process for phosphating metal surfaces Process for phosphating metal surfaces

1989-01-13

1990-07-31

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148263, 148246, 72 42, C23C 2212

Patent

active

049448137

ABSTRACT:
The present invention relates to a process for phosphating metal surfaces, and more specifically of surfaces of iron, zinc, and aluminum and the alloys thereof as a pretreatment for cold working wherein the surfaces without previous activation are contacted in a temperature range of from 30.degree. C. to 70.degree. C. with an aqueous solution containing

REFERENCES:
patent: 3090709 (1963-05-01), Hemricks
patent: 3104177 (1963-09-01), Goldsmith
patent: 3161549 (1964-12-01), Kallenbach
patent: 4622078 (1986-11-01), Opitz et al.
patent: 4688411 (1987-08-01), Hagity
Patent Abstracts of Japan, G Field, Jul. 15, 1980, vol. 4, No. 98 (C-18) (580)

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