Process for treating metal surface

Details Process for treating metal surface Process for treating metal surface

1986-05-09

1987-06-23

Silverberg, Sam

Metal treatment

Compositions

Heat treating

C23C 2226

Patent

active

046750541

ABSTRACT:
In the process of chromate treatment, a metallic material which has been immersed in a chromate treatment solution is allowed to stand in an atmosphere substantially free from any ingredient of the chromate treatment solution for at least 30 seconds and then washed with a halocarbon or a mixture of a halocarbon and an alcohol the chromate treatment solution before drying. By the procedure chromium is evenly and uniformly taken up on the surface of the metallic material and the amount of chromium taken up on the surface can be controlled by conditions of standing in said atmosphere.

REFERENCES:
patent: 3285788 (1966-11-01), Suadlenak
patent: 4257828 (1981-03-01), Weda

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