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Conversion Coating on Zinc Cast
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?
plating shop - SZEKESFEHERVAR, Fejér County, HUNGARY
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.
chemical process supplier
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