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  1. AleksandarLPO

    Pickling stains

    Well, I am not sure.
  2. AleksandarLPO

    Pickling stains

    No pickle is room temperature, alkaline cleaner is hot
  3. AleksandarLPO

    Pickling stains

    Thanks for help and answers. HNO3 concentration is arround 103g/dm3 HF is arround 2.7g/dm3. part has to look good.
  4. AleksandarLPO

    Pickling stains

    Well, after sandblast, degrease in trichloroethylene, then cleaning in Turco and finally pickle in HNO3+HF bath.
  5. AleksandarLPO

    Pickling stains

    Hello all, we are performing pickling on greek ascolloy castings and on some parts on some batches we got stains, 3-4 hundrets of milimeter high, very difficult to remove. Is there any idea what it came from, what is the problem? Thanks

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