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Aluminum Sand Casting Process. Sand casting is one of the various aluminum castings processes. Sand casting involves the used of sand mixture in molding the molten liquid (metal). In this process, the first step is to create a mold in the sand, next is to integrate a gating system, take out the pattern, pour in the molten metal into the mold cavity, let the metal to cool down to solidify, and lastly, break away the sand mold and remove the casting.

When using the sand casting process, a pattern of the desired shape is used. This pattern can be made up of wood, plastic or metal. A single pattern can be used for simple designs, while complex designs usually have split patterns. The split pattern is divided into two parts, the upper part is called the cope, and the bottom part is called a drag. In the process, the mold is filled up with either a casting sand or green sand. Chills can be placed in the mold in order to control the solidification and metallurgical structure of the metal.

Aluminum sand casting process is an inexpensive process for manufacturing aluminum cast parts. It is cheaper as compared to other aluminum casting processes such as die casting and investment casting. Sand casting can be used in both high-temperature and low-temperature metals but is usually used in the processing of low-temperature metals such iron, copper, aluminum, magnesium, and nickel alloys. This particular aluminum casting process is quite similar to the plaster cast method. The pattern is placed in a box called flask and then filled with sand.

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