Why Choose an Investment Casting?

An investment casting is multi layered process that is designed to yield high production rates, particularly
for small or highly complex components that require a superior surface finish. For quality
to cost, the process offers unrivalled performance benefits.

The method also does away with the need for course machining as well as allowing for a greater diversity
in design.

A wax mould of the component to be cast is produced by injection-moulding high-technology wax into a
metal die. A number of wax components are then mounted on to a wax runner which is then dipped (or invested)
in to a ceramic slurry. Further layers are added and then dried to give the shell sufficient durability for the
molten metal.

The wax is removed (for this reason, the process is sometimes called a lost wax process) and the shell
is then fired to leave a ceramic impression of the part to be cast, in to which molten metal is poured.

Once the metal has cooled, the shell is removed leaving a casting that requires little or no finishing.
Tools are generally quicker and lower cost to produce than with alternative casting methods, they last
longer and are easily modified. Castings can be produced in a wide range of metals.

Interesting Fact

The investment casting process, also known as the lost wax method has been in use for thousands of
years. The ancient Egyptians used this process to make jewellery and other ornate objects.

Casting Tolerances and Metals

Materials

Parts can be cast in a wide range of materials.

* Stainless Steel
* Carbon Steel
* Aluminium
* Brass
* Bronze
* Tool Steel
* Cast Iron
* Nickel Alloys
* Cobalt Alloys
* Other metals can also be cast, please contact us for more details.