Cleaning Q&A: Removal of Zinc Phosphate
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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