Investment Casting

Production Process

Wax Injection

Wax patterns of desired castings are produced by injection molding machine.


The wax pattern attached to a runner.

Coating (Shell Building)

The shell is built by dipping the wax assembly in a liquid ceramic slurry and then into a fine sand.


After the ceramic is dry, the wax is melted out, creating cavity within the shell.


The shell is filled with molten by gravity pouring.

Knock out

When the metal has cooled the ceramic shell is broken off by vibration.

Cut off

The parts are cut off from the central runner using a saw.

Finished casting

After appearance inspection the casting is moved to machining process.