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topic 5442

Continuous Zinc Plating of Steel Strip


We need to do continuous zinc plating of steel strip in a thickness of about 3 microns. Would appreciate information on composition of the zinc bath, I do not know if an acid commercial zinc solution would be OK. Also where I can find information on design of the plating line. Thanks in advance.

Oscar Infante
Sales y Compuestos Ltda. - Chile


Dear Oskar, You can find the design samples in Us Patents ( you can find there easily by For your requirements you can prepare sulfate type or chloride type coating bath. Simple one is sulfate it contains zinc sulfate (App. 300-400 gr/lt), ammonium chlorate-ammonium sulfate"buffer" (app. 8-16 gr/lt Cl content) Best Regards,

Hamdi Ercelik


Dear Mr. Ercelik: Thank you very much for your reply, could you detail me composition of the chloride type bath. These chemicals are more easily obtained locally.

Also and most important, can you tell me operation temperature for both formulations, the chloride and the sulphate, as well as current densities that can be applied. Best regards and thanks in advance,

Oscar Infante
- Chile

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