Aqueous zinc phosphating solution and method of rapid coating of

Metal treatment – Compositions – Heat treating

Patent

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C23F 710

Patent

active

039390144

ABSTRACT:
In the continuous strand method of processing high carbon steel wire for subsequent cold deformation, a zinc phosphate conversion coating is rapidly formed on the steel surface to aid in the subsequent deformation by contacting the steel surface with an aqueous acidic coating solution comprising phosphate, zinc and nitrate.

REFERENCES:
patent: 2351605 (1944-06-01), Gibson
patent: 2516008 (1950-07-01), Lum
patent: 2884351 (1959-04-01), Cavanagh
patent: 2930723 (1960-03-01), Prysdale et al.

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