|
|
|
|
 |
1.
A master production wax impression mold is made to precise specifications. Note that all parts are made from ONE master mold to insure uniformity in complex and intricate parts. |
 |
2.
Specially formulated hot liquid or paste wax is injected
into the mold and allowed to harden into an exact replica,
or pattern, of the finished metal part. Waltek Inc. uses
multi-cavity tooling to produce many identical parts per
injection. Multiple wax patterns are ganged together on
a single expendable wax sprue. |
 |
3.
The sprues are then repeatedly dipped in ceramic slurry,
coated with refractory sand, and allowed to dry in a temperature
and humidity controlled environment. |
 |
4.
The new ceramic "shell" is autoclaved, melting
out the wax core, leaving an empty ceramic shell that
will produce multiple parts. The shell is fired at high
temperature becoming the precision mold into which the
molten metal is poured for casting. |
 |
5.
When the metal cools down, the ceramic shell is removed
using a variety of methods, and each precision part is
cut from the sprue. Parts then go to grinding and other
secondary operations as required. |
|
|
 |
|
