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We manufacture an aluminium component which we clean in a tank which is also used to clean copper and brass. How can we avoid contaminating the aluminium with copper?

April 26, 2017Aluminium avoid Brass clean component contaminating Copper manufacture tank Used

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We manufacture an aluminium component which we clean in a tank which is also used to clean copper and brass. How can we avoid contaminating the aluminium with copper?

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A The best solution is to use separate tanks since copper ions will always migrate to the aluminium. Failing this, immerse the aluminium component in a 5% solution of nitric acid. This will dissolve any traces of copper.