DIP SPIN – The coating of small parts (i.e. bulk material) often takes place in a dip- spin process. In this process, the coating is applied to the parts in a basket or a barrel. The basket is then immersed in a dip tank where the paint wets the entire surface of the parts. While immersed in the coating, the basket is slowly rotated which assists in the elimination of air-pockets and improves coverage. After the dipping process, the basket is removed from the dip-tank and rotated or centrifuged, so that the coated parts are thrown against the outer wall of the basket. Excess coating is removed from the parts due to the centrifugal force and escapes through small holes in the basket back into the dip tank.
DIP AND DRAIN – In the conventional dip drain coating process, the parts to be coated are immersed in the paint and then removed at a controlled speed. The dip drain coating process uses both solvent- based and water- based dip coatings. The advantage of this process is the high degree of automation and the complete painting of the components with minimal loss of coating material – no overspray.
HAND SPRAY – The word spraying generally refers to coating processes that use a spray of particles or droplets to deposit a material onto a substrate. … At the substrate surface, the particle droplets form ‘splats’ or ‘platelets’ that interlock and build up to give the coating.
POWDER COATING – Powder coating is a dry finishing coating representing over 15% of the total industrial finishing market. Companies use powder coatings for a high-quality, durable finish, allowing for maximized production, improved efficiencies, and simplified environmental compliance. Used as protective and decorative finishes, powder coatings are available in an almost limitless range of colors and textures.
JAPANNING – A type of finish that originated as a European imitation of Asian lacquerwork. It was first used on furniture, but was later much used on small items in metal and is most often a heavy black “lacquer”, almost like an enamel paint.
HEADS ONLY COATING – The coating head gives machines and applications the greatest flexibility in all dimensions. The heart of the new slot die is the head, which offers extremely fast cycling and thereby permits high production.
ELECTROSTATIC COATING – A manufacturing process that employs charged particles to more efficiently paint a workpiece. Paint, in the form of either powdered particles or atomized liquid, is initially projected towards a conductive workpiece using normal spraying methods, and is then accelerated toward the work piece by a powerful electrostatic charge. An addition to the electrostatic coating (or e-coating) process is dipping electrically conductive parts into a tank of paint that is then electrostatically charged.
BLACK OXIDE OR BLACKENING – A conversion coating for ferrous materials, stainless steel, copper and copper-based alloys, zinc, powdered metals, and silver solder. It is used to add mild corrosion resistance, for appearance and to minimize light reflection.
PHOSPHATING – A chemical process for treating the surface of steel, where barely soluble metal-phosphate layers are formed on the base material. The layers created are porous, absorbent and suitable as a conversion layer for subsequent powder coating without further treatment.