De-greasing process: Chemical de-greasing process are applicable to mild steel, galvanized steel & Aluminum substrates. This process removes heavy or sticky oil grease like substances from any surface. Since all solvents are almost neutral they do not attack to the base metal. In this process the surface are to be cleaned are wiped with rag of cotton soaked in a suitable solvent such as kerosene, Benzene, Naptha etc.
Water Rinse: The De-greased shell shall be dipped in the tank of water and to soak. This process enables to remove dust particles and the solvent used for de-greasing
De-rusting process: Corrosion is common phenomenon for metals. Iron or steel when exposed to humid atmosphere the process is initiated resulting in rust formation. Rust is the oxide of iron which is adhered to the substrates. Rust is soluble in acid such as hydrochloric acid, Sulphuric acid, etc. Hence it can be removed by acid cleaning
Water Rinse: The De-rusted shell shall be dip in the tank of water and to be soaked. This enable to remove rust particles collected from the surface of shell.
Activation process: This process provides fine active crystal centers on the surface of the metal which ultimately results into fine phosphate coating layer in phosphating stage. This help to attain a uniform phosphate coating.
Phosphating: this is the method of metal pre-treatment. Phosphating consist of the deposition on the metal surface of insoluble metal phosphates which are actually chemically bonded to the substrate. Since this is a chemical reaction it gives good adhesion for paint film.
Water Rinse: The Phosphatised shell shall be dip in the tank of water and to be soaked. This enables to remove chemical particles from the surface of shell.