It is remarkable for lightness, malleability, and resistance to oxidation. 1220 degrees F. Pretreatment recommendations for maximum corrosion resistance is chem-film or chromate conversion coating. Aluminum heats up quicker than steel in a standard convection oven. This may allow cure process of the powder to happen in less time resulting in higher line speeds for high production applications. Aluminum in its molten state is poured into a form and allowed to solidify and form the desired part configuration.
Pretreatment recommendations are the same as above.
Special care in processing may be necessary if the casting material has trapped contaminants or air pockets. Die casting is generally done under pressure, whereas, a sand casting is simply poured into the compressed sand impression mold as is. The process of metal spraying, also called spray metalizing, consists of applying a protective metal coating to the surface of a steel substrate. The application spray gun is constructed so that aluminum powder or wire is fed to the gun, where it is heated to a molten state. These molten droplets of aluminum are propelled via nitrogen gas and compressed air towards the desired surface and fuse together to form a protective aluminum coating at a predetermined thickness.