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Powder of Zinc plating.

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  • Powder of Zinc plating.

    Hey All:
    I have a customer that wants my to PC on items that had been previously zinc plated. Do I need to do any special prep? Or do I need to blast off the zinc coating first
    Thanks
    Bob
    www.capecodpowdercoating.com

  • #2
    I just blast off the zinc coating and then treat it like a normal part. It probably wouldnt hurt to prebake it though. Ive only powdercoated a couple small parts that previously had a zinc plating but they came out great

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    • #3
      Whether you get all the zinc off or not is pretty much immaterial. It's a metal, not much different than any of the fillers used to prep parts with. More important is that it's clean.

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      • #4
        I've been PCing zinc palted parts quite successfully. Zinc is a great base for PC. Some pictures:

        http://www.hogheaven.com/hobby/plati...tes/index.html

        If the zinc parts have a chromate conversion coat, simply cleaning them good should be enough. Chromate coversions are a good base for PC.

        If the parts are raw zinc, pre-etch them for about 10-20 seconds in a 3-5% muriatic acid pickle. This will remove surface oxidation & activate the zinc surface.

        Sean
        Seans Zinc Plating page

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        • #5
          i spray right over it .. clean it real good !!!

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