phosphating

The bonding can be improved by prior phosphating of the substrate.

Manganese phosphating produces a medium- to dark-gray or black finish.

Manganese phosphating is used as a treatment for rust and corrosion prevention on steel.

Surface preparation and corrosion protection methods such as phosphating have brought painting into the range of engineering coatings.

It remains to be seen if these, or other new chemical conversion coatings, will ultimately replace traditional phosphating and Parkerizing.

During cleaning operations of the Phosphating Facility there was a hazard of spillage.

The guide deals with the phosphating of different metals and describes additives to phosphate baths that can improve performance.

The grain size of the zinc phosphating is usually the smallest among the three processes, providing a more appealing cosmetic appearance in many applications.

Phosphating of threaded connections.

Iron phosphating produces a black or dark gray finish similar to manganese phosphating.

A widely used additive is to seed the metal surface with tiny particles of titanium salts by adding these to the rinse bath preceding the phosphating.

These often occur in multiple stages and consist of degreasing, etching, de-smutting, various rinses and the final phosphating or chromating of the substrate.

These include tri-metallic phosphating, cataphoretic priming and extensive use of sealants such as anti-gravel protection on the leading edge of the bonnet and a clear lacquer on metallic finishes.

Colquhoun of the Parker Rust-Proof Phosphating Company of America then filed another improved phosphating patent application in 1919.

Manganese phosphating is performed, typically in a bath of dilute phosphoric acid that is at approximately 95˚C for about 5-20 minutes (the time varies with the state of the surface being coated).

The ultimate result was that Clark W. Parker, along with his son Wyman C. Parker, working together, set up the Parker Rust-Proof Phosphating Company of America in 1915.

F019 Wastewater treatment sludge from the chemical conversion coating of aluminum except from zirconium phosphating in aluminum can washing if such phosphating is an exclusive conversion coating process.

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.