Clean the Surface: Remove any dirt, grease, oils, or
contaminants with a degreaser or industrial cleaner. This initial cleaning step
is essential to ensure the powder adheres properly to the steel.
Rinse Thoroughly: After cleaning, rinse the steel to remove any leftover cleaning solution. Residue from the cleaner can affect the finish, so a thorough rinse is important.
Remove Rust and Old Paint: Any rust, mill scale, or previous paint must be removed. Sandblasting or media blasting is highly effective for this, especially for large surfaces or intricate shapes. Sandblasting also helps to create a slightly rough texture, which improves powder adhesion.
Dry the Steel Completely: Any remaining moisture can
affect powder adhesion and cause bubbling or defects in the finish. Ensure the
steel is fully dry before moving to the coating process.