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Sp Degreaser

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  • 48Buick
    replied
    Yes:
    I agree. I should have clarified myself a bit more.
    The parts that I do not touch with cleaners are the pitted potmetal from the old cars. If they do have grease on them, then I degrease first, sandblast and then start plating. Because of the process im using no solution touches the corroded zinc itself.
    But, if it has grease or oils on it....Deffinently degrease and clean it well!
    48Buick

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  • aermakov@rogers.com
    replied
    48 buick,
    you should still degrease the parts prior or after blasting. I've ruined a 4 gal batch of solution by slopiness. Things like automotive brake and oil hoses, wheel hubs, diff covers etc. absorb tons of oils and detergents (acidic) over time and will throw the tank PH if you are not careful. I've adopted a 30 min den. acohol bath + 10 min distilled water soak prior to plating. I get rewarded with excellent results every time and the solution that outlived 3 sets of anodes. However, my second tank just got killed by Chinese electronics - do not trust timers!

    Leave a comment:


  • 48Buick
    replied
    tgoode
    Your correct that anything other then a neutral PH will attack zinc/potmetal. Heck, I have watched my tap water turn potmetal black! By nature, zinc is a sacrificial metal. IE galvanized pipes and zinc anodes on outboard motors.
    Personally, I dont use any cleaners or anything on my potmetal parts. Just sandblast clean and start the plating process.
    48 Buick

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  • tgoode
    replied
    What is the ph of the SP degreaser?

    I ask because I spoke with my father, a semi-retired mettalurgical engineer, and he advised me that zinc is also subceptible to attack from basic solutions.

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  • SUPRARACER
    replied
    I wonder if this is with the triple chrome kit. In this kit they supply pickle #4 whick looks like the degreaser. Maybe you got them mixed up.

    Just a thought.

    John

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  • mcaswell
    replied
    No, it shouldn't. The SP should neutralize small amounts of acid.

    Post a problem report and we'll get into specifics.

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  • warchild
    replied
    Sp Degreaser

    No i did'nt put acid in it... i could have maybe diped something in it that had very litttle acid on it. would that hurt the degreaser?

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  • mcaswell
    replied
    It shouldn't. Did you add acid to it? Zinc will corrode quickly in acidic solutions.

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  • warchild
    started a topic Sp Degreaser

    Sp Degreaser

    when i put zinc in my degreaser it starts to corrode it very fast. why is that?
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