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Investment precision casting Process

Our engineers according to your drawing or prototype part develop a solution special for your situation.

Mold Making:
We design and create the injection mould from your drawing or prototype.

Mould Management:
All pattern mould would be checked and maintained regularly as customer’s properties.

By injecting liquid wax into the mould ,wax patterns are produced. Ceramic cores and water soluble cores can be used when needed.

Wax Patterns:
Wax patterns will be checked and inspected before moving to the next operation.

Multiple wax patterns are assembled on a tree.

Prime Slurry:
Wax-tree is coated with slurry of fine ceramic liquid.

The first coat is covered with fine sand.

The wax-tree with ceramic coat should be dry for a time in respective of part configuration.

Up to 6 or more layers of ceramic, sand or slurry will be subsequently applied and to dry.

Completed Ceramic Shells:

Finished ceramic shells are now ready for removing the wax from inside.


A steam autoclave machine will melt out the wax of ceramic shells.


De-waxed shells are fired at high temperature to cure the ceramic.

Fired Ceramic Molds:
Fired ceramic molds will be for preheat and casting right away after out the autoclave machine.

Preparation of molten meal, alloying and degassing, metal melting is done in furnaces.

Then metal is cast into the ceramic mold. The process also called pouring.

Shell Removal:
Ceramic shell will be removed after the assembly cooling down.

Cut Off:
Unwanted gates and risers removed by various tools.

Gate Grinding:
Gates are further removed by grinding. All de-burring and grinding work is performed.

Heat Treatment:
In order to improve the physical properties of the part, subsequent processing regularly will be heat treating.

Including sand last finish, steel shot, glass bead and vibratory finishing may be used to blend the surfaces and present a clean and uniform finished casting.

Inspection work is throughout the process. The final inspection is done on every casting prior to shipping.

Dimensional Inspection:
We measure dimensional characteristics 100% compliance to the drawing.

X-Ray Inspection:
X-ray inspection method to detect flaws is used when required.

Mechanical Properties:
Mechanical properties are determined on tensile test machine by
Test bars cast accompany with the same batch products.
Further processing such as machining, plating, coating, painting and assembly are offered.

Send Us Your Inquiry
Send us your inquiry; let the experts at ARC evaluate your casting requirements. We can take your program from rapid prototype through low, medium or high volume production

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