Permanent Mold Tutorial

PERMANENT MOLD PROCESS:

Typically cast iron or steel tool / mold (4140 or H13) is used as the mold material and the cores are made from sand. Cavity surfaces are coated with a thin layer of heat resistant material / dycote. Cavities and gating are engineered and machined (CNC) to customer part models to run effectively by eliminating shrink or any other voids in the product.

Permanent Mold castings are produced with tight tolerances (+/-.015 - .020") and a smooth cosmetic surface finish (125 / 175). With the adequate % of silicon in the aluminum, metal can flow to tight areas allowing for thin walls (.100") to fill consistently.

Eagle currently runs parts ranging in sizes from .08 lbs. (1.28 oz.) - 50 lbs. We have multiple horizontal and vertical presses along with some large tilt pour machines.