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Cleaning Q&A: Removal of Zinc Phosphate

How can we effectively remove phosphate from a steel surface after the drawing process?

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Q. How can we effectively remove phosphate from a steel surface after the drawing process?

A. Most phosphate coatings can be removed with a strongly alkaline, chelated stripper. This would be run at a very hot (160–200°F), fairly high concentration (8–12 ounces per gallon).

 

Originally published in the June 2016 issue.  

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