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Conversion Coating on Zinc Cast

Hello,

My question is: Is it possible on zinc cast base a kind of conversion coating that ensures salt-spray testing for min. 72 hours and does not contain hexavalent chromium-ions?

GABOR NAGY
plating shop - SZEKESFEHERVAR, Fejér County, HUNGARY
2004

Do you intend first to zinc plate the casting? If positive, there is no problem to find an adequate passivation based on tri valent chromium.

Sara Michaeli
Tel-Aviv-Yafo, Israel
2004

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