BZ-216 trivalent chromium black zinc water is a single-dosage liquid concentrate, which is a trivalent chromium black zinc process suitable for zinc plating, suitable for rack plating and barrel plating, and can be used together with the corresponding coating, which can produce bright and uniform black passivation film on the galvanized layer.
BZ-216 trivalent chromium black zinc water is completely free of hexavalent chromium to meet the requirements of products exported to Europe, the United States, Japan, etc. The black passivation film has good corrosion resistance and the appearance of the film is a black film with almost no color interference, which is suitable for all kinds of acid zinc and alkaline zinc plating production lines with hanging or barrel plating, and it is used at room temperature, and the passivate can be used for a long period of time as long as it is replenished according to the amount of consumption, and it does not need to be replaced frequently.
Trivalent chromium black zinc water is widely used in electronic, automotive, electrical materials, passivating film black, good bonding force, and Bigely sealing agent supporting the use of attractive bright black leather film, good corrosion resistance, neutral salt spray up to 96 hours, passivating liquid stability, small consumption, suitable for galvanized post treatment, especially alkaline cyanogen free galvanizing.
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