Birchwood Casey’s Presto Kleen HP heavy duty powdered cleaner, and Safe Scrub ST
biodegradable liquid cleaner are designed for metal component surface preparation prior to black oxide coating and other finishing processes. Both are designed for medium to heavy duty soak tank cleaning of iron and steel parts. They mix easily with water and operate at temperatures of 120-180°F to quickly lift oily residues from the metal surface and hold them in suspension. A blend of detergents makes them free-rinsing in cold water, giving them the ability to produce water-break-free surfaces receptive to subsequent coating operations. Also available is Safe Scrub M for effective cleaning of light metals, such as aluminum, brass and zinc, without discoloring the metal.
For tool steels, or parts that carry an oxide coating that need to be descaled or activated by means of a surface conditioner prior to subsequent finishing operations, the company’s Oxyprime primer/surface prep makes the metal surface more receptive to the subsequent coloring or blackening operations.