Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1989-09-25
1992-06-02
Silverberg, Sam
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
148269, C23C 2212
Patent
active
051183676
ABSTRACT:
The present invention relates to a process for treating a brass-plated steel wire comprising applying to the wire an aqueous zinc phosphate solution having a pH of from about 2 to about 3 and containing (1) a total of from about 28 to 32 grams per liter of phosphoric acid, (2) from about 8 to 11 grams per liter of free phosphoric acid, (3) from about 8 to 11 grams per liter of Zn.sup.+2 which may be derived from the group consisting of zinc oxide, zinc phosphate or mixtures thereof, and (4) wherein the mole ratio of total phosphoric acid to free phosphoric acid ranges from 2.5:1 to 4.0:1. In accordance with the present invention, the zinc phosphate coating on the brass-plated steel cord inhibits corrosion and adhesion of the wire to rubber after vulcanization is improved.
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patent: 3957543 (1976-05-01), Shinomiya
patent: 3961993 (1976-06-01), Palisin
patent: 3996074 (1976-12-01), Rakestraw
patent: 4182639 (1980-01-01), Pignocco
patent: 4883722 (1989-11-01), Coppens et al.
Hendricks Bruce J.
Silverberg Sam
The Goodyear Tire & Rubber Company
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