Static Casting Techniques Available


SAND CASTING TECHNIQUES:
(Wood or metal patterns, with or without cores)

AIR SET
Cold draw air set sand molds from virgin round grain silica sand. High production continuous mixed materials from our new custom built PALMER delivery system.

HOT SET
Specially formulated resin coated sands, using sub-angular grain silica, come in contact (under pressure) with HOT metal patterns. This is a Hot Draw, Hot Bake process. After curing the mold is drawn from the pattern with very faithful dimensional reproduction. Ambient temperature molds are cast producing low stress parts with high quality as-cast surfaces.
 

INVESTMENT CASTING - SOLID MOLD TECHNIQUES:
One of the oldest "lost wax" processes. Metal dies are injected with semi-molten wax. These wax replica's (injections) are mounted on a sprue, coated with refractories, then set into Stainless Steel Flasks where they are surrounded by an additional refractory slurry. These "SOLID MOLDS" go through a gradual drying and de-wax process to insure size and prevent distortion. Hence the term “PRECISION CASTING”.

Prepared molds are held in a high temperature oven in the final phase. The hot “SOLID MOLDS” are then cast This insulated mold system will cause a slower rate of metal solidification, which effects castings grain structure providing desired mechanical properties in the as-cast state.
 

CERAMIC SHELL MOLDS
Also a “lost wax” process which begins the same way as “INVESTMENT CASTING”, however the completed wax mount will be coated with several layers of ceramic bone china refractories to create a hard shell. De-waxing creates a free standing ceramic mold which will be fired at very high temperatures and cast Although the mold is hot it's materials will cause a faster rate of solidification than that of a “SOLID MOLD” investment casting. This creates a slightly different grain structure, in addition to allowing very tight tolerances to be achieved in the cast state.
 

GRAPHITE MOLD TECHNIQUE:
Used to achieve an as-cast quick chill to produce a fine grain structure. Mostly for tool bits and tips or, other cutting applications. Molds are permanent, and are made of graphite. Limited applications.