Investment Casting. Often called lost wax casting, is regarded as a precision casting process to fabricate near-net shaped metal parts poured from almost any alloy including: stainless steel, aluminum, brass, bronze and copper.

Casting by the investment process allows for parts to meet x-ray and non destructive testing specifications for: military, aerospace, semi conductor industry, valves, pumps and many other industrial applications.

The investment casting process consistently provides high integrity (sound) and dimensionally accurate castings. Cast part dimensions vary less than +-.001 from part to part.more...

Sand combined with a suitable binder can be packed or rammed rigidly about a pattern. When the pattern is removed, a cavity corresponding to the shape of the part remains. The upper half of the pattern is called the cope and the bottom, the drag. Each half is formed separately then, the cope is placed on top of the drag portion. A metal jacket or flask is placed around the mold which holds the four sides in place. (This is done so the sand mold will not come apart while pouring metal into the mold.)

Metal is poured into the mold and the metal fills the cavity area that represents the shape of a part. To allow for adequate solidification time of the metal, the mold will cool for 20 minutes to one hour. Following the cooling period, the sand molds are broken open to remove the part with its metal feed system, gates and risers.more...