Permanent mold refers to the tooling used to produce aluminum castings.
Molds are built from cast iron or tool steel material. The permanent mold process offers high mechanical properties, dimensional repeatability, a good surface finish, and reduced machining at a lower cost. In the permanent mold process, the aluminum flows into the mold cavity through the runner system. When the aluminum has solidified, the mold is opened and the casting is removed. Subsequently, another casting is poured in the same mold cavity.