Liquid Coating
Pretreatment Over Pretreatment, Part 2
Question: Your response to “Pretreatment Over Pretreatment” in the February Painting Clinic should be amended to warn him that running aluminum through an Iron phosphate spray washer would make the sludge in the washer a hazardous waste (according to an earlier comment you made about a year ago). I believe the problem is created by the definition of acid washing of aluminum is a categorical hazardous waste (by EPA definition). When he cleans the washer, all the sludge that is normally sent to the landfill or flushed down the sanitary sewer would be considered an illegal disposal of hazardous waste.
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Question: I just finished reading your answer to B.L. in December’s issue of Products Finishing.
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Question: We are experiencing an unacceptable rate of paint failures of our crackle paint finish.
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Question: We are considering forming an assembly and then painting it rather than painting the individual parts before assembling.
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How to keep the cost of pollution control from hurting you…
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