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Gravity die casting is one of the oldest methods for metal or metal alloy casting. Here, the metal is poured inside the cavity in liquidus form using a ladle or a vessel. The cavity hole has to be on the top surface. There is no external force but gravity that fills the cavity after pouring the molten metal.   Gravity die casting machines have the following types:   Automatic Manual Sometimes it is necessary to tilt the die to control the pouring. Manufacturers use sand cores to keep holes or pores in the casting part if necessary.   Aluminum gravity die casting is better and faster than the sand casting of aluminum. But conventional aluminum die casting, where an external force is used to push the molten metal, is better than gravity casting.

The benefits of gravity die casting are:   No external force is necessary for pushing the molten metal. Gravity die cast components have better density than sand casting parts. This process costs less than most other processes like vacuum casting, squeeze casting, etc. Gravity casting parts have less porosity and better grain structure than sand casting parts. For medium or small volume production, it is cheaper than other methods. Gravity casting components have good mechanical properties, which are great for heat treatment. The component’s surface has a better finishing than most other casting parts. Some of the drawbacks of gravity die casting are:   Manual gravity die casting takes more time than other casting processes. Automatic gravity die casting parts are less precise than manual gravity casting parts. It is complicated to manufacture complex parts using this method.