Known for its ability to achieve tight tolerances, superior surface finishes and high mechanical properties, permanent mold is a quality option for many applications.
Fig. 1. This aluminum transmission main housing was cast via semi-permanent mold using 27 sand cores.
Unlike sand and plaster molding processes, where the mold is recycled after every part, the molds used in permanent mold casting can be used to produce thousands of components before they have to be repaired. The permanent mold casting process is known for its ability to achieve tight tolerances, superior surface finishes and high mechanical properties. Its ability to achieve these details is based on the fundamental principle of this process—the pouring of molten metal into reusable metal molds.