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.