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.