Shell Core
Shell cores are specialized, high-precision, hollow sand molds created by blowing resin-coated sand into heated, metallic, or thermoplastic core boxes (200 - 300°). Used primarily in foundry, automotive, and aerospace industries, they produce intricate, high-quality, lightweight components with superior surface finish and consistent wall thickness. Resin-coated sand is injected into a heated metal core box (also known as a shell core shooter), where the resin cures, hardening only the outer layer to form a shell, while excess uncured sand is removed for reuse.
The completed shell core can be used in a range of casting applications to create complex, consistent and accurate interior shapes. These castings benefit from good interior surface smoothness, very few surface defects and good dimensional accuracy. The shell core can easily be removed after casting using heat treatment and other knockout processes.
