Precision Casting (Investment Casting) Services in China
Producing Highly Complex, Near-Net-Shape Metal Parts with Superior Accuracy and Surface Finish.
- ISO 9001 Certified
- Wide Alloy Selection
- Reduced Machining Costs
Your Expert Partner for Precision Casting
Celerity Precision offers high-quality precision casting services in China, utilizing the investment casting process (also known as “lost-wax casting”) to create intricate and highly accurate metal components. This advanced foundry method involves creating a wax pattern of the part, coating it in a ceramic shell, melting out the wax, and then pouring molten metal into the resulting ceramic mold. Investment casting is unparalleled in its ability to produce complex, near-net-shape parts with fine details and an excellent as-cast surface finish, making it ideal for aerospace, medical, and industrial applications.
A Complete Solution from Pattern to Finished Part
We provide an end-to-end investment casting solution, managing every technical stage of the process to ensure the highest quality and integrity for your components.
Expert Tooling and Wax Pattern Injection
The process begins with a high-precision aluminum mold used to inject wax patterns. Our expertise in tooling design ensures the wax patterns are dimensionally accurate, accounting for material shrinkage and providing the foundation for a perfect final part.
Robotic Ceramic Shelling
We utilize automated robotic dipping to build the ceramic shell around the wax patterns. This automated process ensures a perfectly uniform and consistent shell thickness, which is critical for dimensional stability and preventing casting defects.
Wide Alloy Selection & Pouring
Our foundry is equipped to pour a vast range of both ferrous and non-ferrous alloys, including stainless steel, carbon steel, aluminum, and copper-based alloys. We use controlled melting and pouring processes to ensure the metallurgical purity and integrity of every cast part.
Finishing and Secondary Machining
After casting, parts go through finishing processes like gate grinding and sand blasting. While investment casting produces near-net-shape parts, we also provide in-house precision CNC machining for any features that require tolerances tighter than what the casting process can hold, such as critical bores or mating surfaces.
An Extensive Range of Castable Alloys
Investment casting is compatible with a very wide range of metals, allowing for great flexibility in material selection for performance and application.
Stainless Steel
304/304L, 316/316L, 17-4 PH (Excellent for strength and corrosion resistance)
Carbon & Alloy Steel
1020, 1045, 4140, 8620 (For high-strength and wear-resistant parts)
Copper-Based Alloys
Bronze, Brass (For bearings, marine hardware, and decorative parts)
Superalloys
Nickel-based (Inconel) and Cobalt-based alloys for high-temperature aerospace and turbine applications.
Have a Design Ready? Let's Make It Real.
Why Choose Us for Precision Casting
Exceptional Design Freedom
Investment casting allows for the creation of extremely complex internal and external geometries, undercuts, and fine details that are impossible or prohibitively expensive to achieve with any other single process.
Superior As-Cast Surface Finish
The process produces a much smoother surface finish (typically 3.2 Ra μm / 125 Ra μin) than sand casting or die casting, reducing the need for secondary polishing.
Tight Dimensional Tolerances
We can achieve excellent as-cast tolerances, often minimizing or completely eliminating the need for costly secondary machining operations on many features.
Vast Material Selection
From standard stainless steels to high-performance superalloys, investment casting is compatible with hundreds of different alloys, allowing you to choose the perfect material for your application.
Reduced Total Project Cost
By producing a near-net-shape part in a single process, we can significantly reduce material waste and subsequent machining time, lowering the overall cost for complex components.
Integrated Manufacturing Partner
We provide a complete solution, from casting and heat treatment to final CNC machining and finishing, all managed by a single, accountable partner.
Advantages of the Investment Casting Process
Create Complex, Near-Net-Shape Parts
The primary advantage is the ability to produce a part that is very close to its final dimensions, even with highly intricate features.
Reduce or Eliminate Machining
For many designs, the accuracy of the process is sufficient to eliminate the need for most, if not all, secondary machining.
Excellent Surface Finish
Delivers a smooth finish that is far superior to other casting methods, ideal for parts where aesthetics are important.
High Level of Detail
Can reproduce fine details like logos, lettering, and textured surfaces directly from the tool.
No Draft Angle Required
Unlike die casting, many investment cast parts can be designed with no draft angle on the walls, allowing for true vertical features.
Minimize Material Waste
As a near-net-shape process, it uses material far more efficiently than machining a part from a large block of solid billet.
From Design to Precision Part in 5 Key Stages
Tooling & Wax Injection
We create the mold and inject wax patterns to produce exact replicas of your part.
Shell Building
The wax patterns are assembled onto a "tree" and repeatedly dipped in a ceramic slurry and sand to build a hard shell.
Dewaxing & Burnout
The shell is heated in an oven, which melts out the wax (the "lost wax") and cures the ceramic mold..
Pouring & Finishing
Molten metal is poured into the hot ceramic mold. Once cooled, the shell is broken away, and the parts are cut from the tree and finished.
Machining & Inspection
We perform any required secondary CNC machining and then rigorously inspect the final parts before shipping.
Precision Casting FAQ
What is the difference between precision casting and die casting?
Precision casting (investment casting) uses an expendable ceramic mold, which allows for more complex shapes and a wider range of materials (like steel). Die casting uses a reusable metal mold and is better suited for lower-melting-point alloys (like aluminum and zinc) in very high volumes.
What is "near-net-shape"?
It means the part comes out of the mold very close (“near”) to its final (“net”) dimensions, requiring minimal secondary machining.
What kind of tolerances can you hold with investment casting?
Typical as-cast tolerances are around ±0.1mm for the first 25mm. We can hold tighter tolerances, but it depends on the part size and complexity.
What is the tooling cost for investment casting?
The initial tooling cost for the wax injection mold is moderate, less expensive than a high-pressure die casting die but more than the pattern for sand casting.
What is the smoothest surface finish you can achieve?
We can consistently achieve an as-cast surface finish of around 3.2 Ra μm (125 RMS). A much smoother finish can be achieved with secondary polishing.
Is this a good process for prototypes?
Yes, it can be. While there is a tooling cost, it is often more cost-effective to make a tool and investment cast a complex prototype than to try and machine it from a solid block of metal.