I-C (Investment Casting) Process

The basic steps UMS take for the I-C Process are outlined below:

STEP 1:

A wax pattern is produced by injecting wax into a metal die.

STEP 2:

The wax pattern which is an exact replica of the required part is removed from the die.

STEP 3:

The wax patterns are attached to a central wax bar, called a sprue, to form a cluster or tree.

STEP 4:

The tree is dipped (invested) into a ceramic slurry.

STEP 5:

After drying, the coating process is repeated with progressively coarser refractories until a self supporting shell or mould is formed.

STEP 6:

A self supporting shell or mould is finished when approximately 3/8" thick.

STEP 7:

Once the mould is dry, it is heated to allow the wax to run out

STEP 8:

The tree is fired at a high temperature to sinter the mould, remove all residual traces of wax and preheat the mould for pouring.

STEP 9:

Molten metal is poured into the heated mould.

STEP 10:

After cooling, the mould material is removed by vibration, chemical cleaning, or mechanical blasting.

STEP 11:

Parts are cut out from the sprue, lightly ground and prepared for shipment.