There are a number of other particular scenarios that call for clear coating or clear coat resins as well. Clear powder coating versus liquid paint on aluminum wheels.
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Clear powder coating aluminum. It doesnt look bad just different. If the part was originally clearcoated or clear anodized its probably a good alloy for brightness. Remember that there are countless grades of aluminum and some are optimized for clearcoating while others arent. Unlike liquid paint powder coating doesnt require a solvent. Typically if you are coating with a gloss powder the procedure is. Final polishing should be performed with gloves and the finisher should be the one to do that immediately prior to coating.
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. Its not difficult to powder clear polished we do it a lot. High baking temperatures 325 400 degrees f oven curing restricts it to shop use color change is labor intensive costly atomized powder in air may be explosive initial equipment expense. Powder coating is the process of spraying electrostatically charged paint in powder form onto your extrusions. Nobody wants rejects so here are the instructions step by step. Clearing does affect the way the aluminum looks slightly.
The lifetime of the finish is proportional to the thickness of the anodic coating applied. The use of an aluminum pre treatment or conversion coating is always recommended to promote good adhesion and provide. Clear liquid polyurethane coatings are used quite extensively in the automotive industry. Otherwise the aluminum flakes in the powder will oxidize very quickly and will begin to resemble bare unfinished aluminum making for an unattractive finish. But if you stripped paint off of it its probably an alloy that wasnt intended to retain brightness and doesnt do as well. Now to apply the clear can be tricky.
It will dull it just a bit and visually you can tell its cleared. Anodizing is a simple electrochemical process developed 100 years ago that forms a protective coating of aluminum oxide on the surface of the aluminum. 1 pre treat the aluminum surface. As with the liquid polyurethane coating system the aluminum surface must be very clean and free of any dirt oil or grease. So its very important that the surface of every extrusion is properly pre treated. Clear powder coating have not yet gained recognition in this area primarily due to aesthetic reasons.
When working with chrome powders for example it is essential to finish with a clear coat on top. Some are these are. Theyre primarily used as the clear coat top coat found on most cars and are formulated to be very durable. Powder coatings also have limitations. Bake the base color you are going to clear coat over for about 50 of total cure time recommended. Aluminum oxide is a hard durable weather resistant substance that protects the base metal.
Gallery of Clear Powder Coating Aluminum
