A process that converts the surface of a steel workpiece to iron phosphate usually prior to painting. Before phosphating, the surface of the workpiece must be free of rust and scale. This is usually done with acid pickling, mechanical wire brushing, or blasting.
Phosphating involved treating a metal, usually steel, with phosphoric acid. This greatly improved the adhesion and durability of coatings.
Although phosphating was developed in the 1860s, treatment times were exceedingly long until iron filings were added to the phosphoric acid bath after 1906
Phosphating
Thorough degreasing of panels before phosphating is essential to ensure proper adhesion of the phosphate coating. Any residual oils, grease, or contaminants can interfere with the chemical reaction necessary for effective phosphating, leading to poor coating quality. Additionally, inadequate degreasing may result in uneven surfaces that compromise corrosion resistance and overall performance of the finished product. Ensuring a clean surface maximizes the benefits of the phosphating process.
Manganese is a metallic element with a silvery-gray color and a solid state at room temperature. It has a high melting point of 1,246 degrees Celsius and is a hard and brittle metal. Manganese is a good conductor of electricity and is often used in alloys to increase strength and durability.