Over the last few months, the Workshop Hero™ team has been asked about gun parkerzing and whether or not Metal Rescue™ would have any effects on it, good or bad? Parkerizing (also called phosphating and phosphatizing) is used on guns and is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of an electrochemical phosphate conversion coating. Parkerizing is usually considered to be an improved zinc or manganese phosphating process, and not to be an improved iron phosphating process, although some use the term Parkerizing as a generic term for applying phosphating (or phosphatizing) coatings that does include the iron phosphating process. Metal Rescue™ will theoretically remove gun Parkerizing because in a Parkerized coating the zinc and manganese are in the same form as a zinc oxide and manganese oxide. Metal Rescue™ will remove zinc oxide and manganese oxide. However, gun Parkerizing may be more difficult and take longer to remove than gun bluing because bluing is an iron oxide based coating and Metal Rescue™ chelates iron oxide much more readily than zinc oxide or manganese oxide. Also the Parkerizing application method (temperature and additives used) could have an influence on Metal Rescue™ effectiveness. A very “tight”, thick parkerized film will be more difficult to remove. The short answer is: Yes, in most cases Metal Rescue™ will remove gun Parkerizing, but it will most likely take longer than removing gun bluing so if the rust is not heavy and a shorter soak time is possible, perhaps the Parkerizing will be spared. For non-typical applications like Parkerizing, testing in a small area or another piece is always recommended.
Gun Parkerizing and Metal Rescue Rust Remover
Posted in: Rust Gone Wild, Rust Removal Aricles
Posted on December 19, 2011
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