Custom Die Casting Services in China
Rapid, High-Volume Production of Complex Metal Parts with Excellent Surface Finish.
- ISO 9001 Certified
- Aluminum & Zinc Alloys
- In-House Tooling & CNC Machining
Your Expert Partner for Die Casting Manufacturing
Celerity Precision offers comprehensive high-pressure die casting services in China, providing a highly efficient solution for manufacturing complex metal parts in medium to high volumes. Die casting is a process where molten metal is forced into a hardened steel mold (a die) under high pressure. This method is ideal for producing parts with intricate details, thin walls, and excellent dimensional accuracy at a very rapid pace. Our integrated services cover every stage of the process, from expert Design for Manufacturability (DFM) and in-house tool making to high-volume casting, precision secondary machining, and final surface finishing.
A Complete Solution from Tooling to Finished Part
We provide a seamless, end-to-end die casting solution, ensuring quality, efficiency, and accountability at every step of the manufacturing process.
Expert DFM and Mold Flow Analysis
Before any tool is cut, our engineers perform a thorough Design for Manufacturability (DFM) and mold flow analysis. This critical step helps optimize your part design for the casting process, ensuring proper material flow, minimizing porosity, and guaranteeing the long-term success of your project.
In-House Tool & Die Making
We design and manufacture high-quality, hardened steel dies in-house. By controlling this crucial first step, we can ensure the tooling is built to the highest standards for longevity and precision, reduce lead times, and make rapid modifications or repairs as needed.
High-Pressure Casting Production
Our factory is equipped with a range of modern, automated hot and cold chamber die casting machines. This allows us to efficiently produce parts from aluminum and zinc alloys, maintaining consistent quality, rapid cycle times, and cost-effectiveness for production runs from a few thousand to hundreds of thousands of parts.
Precision Secondary CNC Machining
Raw die-cast parts often require secondary machining to create features that cannot be cast-in, such as tapped holes, precision bores, or mating surfaces with very tight tolerances. Our in-house CNC machining department is fully equipped to perform these critical operations, transforming your near-net-shape casting into a final, precision component.
High-Performance Casting Alloys
Metal
Aluminum Alloys
- A380 (ADC12): The most popular die casting alloy, offering an excellent combination of castability, mechanical properties, and thermal conductivity. Ideal for a wide range of applications from electronic housings to automotive components.
- AlSi12: Known for its excellent fluidity and pressure tightness, making it a great choice for intricate and leak-proof castings.
Zinc Alloys
- Zamak 3: The most common zinc alloy, it is easy to cast, provides a superior surface finish, and is ideal for subsequent plating.
- Zamak 5: Offers higher strength and hardness than Zamak 3, making it a good choice for parts requiring greater structural integrity.
Have a Design Ready? Let's Make It Real.
Why Choose Us for Die Casting
Integrated One-Stop Solution
We manage the entire process under one roof: from DFM and tool making to casting, CNC machining, and final finishing. This eliminates complex supply chains and ensures total accountability.
Expert Engineering and Tooling Design
Our deep expertise in tool design and mold flow analysis ensures your parts are optimized for high-volume production, resulting in higher quality and lower costs over the life of the project.
Rapid Tooling and Production Startup
Our in-house tool making capability allows us to produce your custom die casting mold and start production faster than companies that outsource this critical step.
Precision Where It Counts
We combine the speed of die casting with the precision of CNC machining. We cast the near-net shape quickly and then machine the critical features to the tight tolerances you require.
Consistency for High-Volume Production
Our automated die casting and CNC processes deliver exceptional part-to-part repeatability, ensuring that the thousandth part is identical to the first.
Complete Finishing and Assembly
After casting and machining, we can provide a full range of finishing services, including powder coating, painting, and plating, to deliver a product that is ready for your assembly line.
Advantages of the Die Casting Process
Excellent for Mass Production
Die casting has an extremely fast cycle time, making it one of the most cost-effective methods for producing metal parts in high volumes.
Complex Geometries and Thin Walls
The high-pressure process allows for the creation of intricate, complex net-shape parts with very thin walls, which is difficult with other methods.
Superior Dimensional Accuracy and Stability
Die-cast parts are dimensionally stable and hold their tolerances very well, ensuring excellent part-to-part consistency.
Excellent Surface Finish
Produces a very smooth surface finish as-cast, which can be further improved with minimal secondary preparation for cosmetic finishes.
Integrated Features
Features like bosses, studs, and threads can often be cast directly into the part, reducing the need for secondary assembly operations.
High Strength and Rigidity
Die-cast parts offer an excellent combination of stiffness and strength, especially relative to plastic injection molded parts.
From Design to Mass Production in 4 Key Stages
Design, DFM & Tooling
We work with you to optimize your design, then we manufacture the hardened steel die for your project in-house.
First Article Inspection (FAI)
We produce the first batch of parts ("first shots") from the new tool and perform a rigorous inspection to ensure they meet every specification.
High-Volume Casting & Machining
Once the FAI is approved, we begin full-scale production, including any required secondary CNC machining operations.
Finishing, Assembly & Delivery
We apply the specified surface finish, perform any final assembly, and then package and ship your completed parts.
Die Casting FAQ
What is the main difference between die casting and sand casting?
Die casting uses a reusable metal mold (die) and high pressure, resulting in a very smooth finish, high accuracy, and fast cycle times. Sand casting uses a disposable sand mold and is better for very large parts and smaller quantities.
What is the typical tooling cost for die casting?
The initial tooling investment for a hardened steel die is significant, which is why the process is best suited for medium to high-volume production where the cost can be amortized over thousands of parts.
What kind of tolerances can be achieved with die casting?
As-cast tolerances are very good, typically within ±0.1mm. For tighter tolerances, we use secondary CNC machining on critical features.
What is "draft," and why do my parts need it?
Draft is a slight angle designed into the walls of the part that are parallel to the mold opening. It is essential to allow the part to be easily ejected from the die without damage.
What is the difference between "hot chamber" and "cold chamber" die casting?
Hot chamber machines are used for lower-melting-point alloys like zinc. Cold chamber machines are used for higher-melting-point alloys like aluminum, where the molten metal is ladled into the chamber for each shot.
Can you cast parts with threads?
Yes, external threads can often be cast directly. Internal threads are typically created in a secondary CNC tapping operation for better accuracy and strength.