Prep of new Aluminum

Posted: April 23, 2010 By: westmetal

Home Forums Powder Coating Prep of new Aluminum

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    westmetal

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    We build custom electronic equipment. The chassis are made from .080 aluminum in our shop. We used to paint the chassis, but have started to switch over to powder coating.

    On a couple of the chassis fish eyes have appeared. This is odd because we clean that chassis with Break Clean, then dry with filtered compressed air. We only handle the chassis with gloves. So we are doing something wrong somewhere.

    Here is our prep method:

    Put nitrile gloves on
    Sand chassis
    Vacuum chassis
    Tack cloth chassis
    Mask chassis
    Spray with brake clean
    Air dry
    Powder coat
    Bake

    Any suggestions for improvement?

    Also any suggestions for a spray cleaning chemical that is known to work? I am in Canada, and it is difficult to get the eastwood spray cleaners across the border.

    thanks

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