Continuous phosphate coating process for ferrous or...

Details Continuous phosphate coating process for ferrous or... Continuous phosphate coating process for ferrous or...

C - Chemistry, Metallurgy

23

C

148/17

C23C 22/16 (2006.01)

Patent

CA 1123717

PV 29917/CA ABSTRACT OF THE DISCLOSURE A continuous process of applying a phosphate coating to a ferrous or zinciferous metal substrate by treating the said substrate with an acidic phosphating solution of zinc phosphate in the presence of hydrogen peroxide or of a hydrogen peroxide-liberating substance. The coatings can be achieved over a wide range of operating temperature extending to less than 45°C, and have uniform properties,

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