Powder Coating Aluminum Castings
This is why organic coatings for aluminum should be factory applied. The main surface treatment methods are anodizing electrophoresis and electrostatic coating.
The surface treatment should be carried out to increase the corrosion resistance and abrasion resistance of aluminium profiles.
Powder coating aluminum castings. And electrostatic coating can be divided into powder coating and fluorocarbon coating pvdf coating. Powder coatings may be a little less smooth than some liquid coatings due to the fact that the material is almost 100 percent solids. We are offering aluminium bronze casting to our clients.
The great thing about powder coating cast aluminum parts especially poor quality castings is that the powder fills and builds nicely and will make a cast aluminum part look worlds better because it will fill minor pits and casting marks in a part leaving a nice deep smooth finish. Organic coatings paints powder coatings. Suitable for marine on deck castings water cooled manifold and jackets car and road transport fittings thin section and intricate castings such as housing meter cases and switch boxes for very large castings e g cast doors and panels where ease of casting is essential for chemical and dye industry castings e g pump parts for.
A local powdercoater recommended jasco paint and epoxy remover after saying they had two sandblasters one wouldn t touch the coating and the other was so big it might destroy this aluminum intake manifold. Some example applications for powder coating include. With aluminum the pretreatment is of utmost importance.
Too much recycled powder added and not sieved. Before powder coating they were pre heated to 230 240 c to remove any gas in castings cooled powder coated and ovened again at 230 c. There are particles on the surface of aluminum alloy die castings before spraying.
Powder coating is much more hard wearing than traditional painting or spraying powder coating extends the life of aluminum die casting parts often in harsh outdoor environments. The powder coating is damp and agglomerates and the atomization is not well when spraying. The coating is sprayed too thinly and the substrate is difficult to cover if it is mild.
We are facing severe problem of bubbles powder coated aluminum casting parts no issues with extruded parts. The performance of an organic coating paints or powders depends on the pretreatment resin and pigmentation. Handrails for stairs and steps we manufacture bespoke and modular handrails and ramp systems at our facility.
Resins are often the weak link in an organic coating system. Cast parts are cleaned and clear chromated before moving to powder coating. Powder coating can be removed from steel parts by sandblasting.
Without solvent the coating has to depend on the melt and flow phase of the cure cycle to achieve a smooth finish.