Custom Die Casting Services
Custom die casting services for aluminum, magnesium and zinc alloy parts. High-pressure hot-chamber and cold-chamber casting for custom components from prototype to mass manufacturing.
- Factory-Direct Pricing
- Dedicated Engineering Support
- Reliable Lead Time
Quality Certifications
ISO 9001:2015 | IATF 16949:2016
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Die Casting Manufacturer with Advanced Production Facilities
ZH Precision is a custom die casting manufacturer based in China, serving global OEM customers across Europe and North America. Our die casting workshop features cold and hot-chamber machines from 88T to 3000T, supporting parts ranging from small electronic housings to large automotive components. We produce precision aluminum, zinc, and magnesium die castings with stable production capabilities and reliable delivery.
Types of Die Casting Processes at ZH Precision
To accommodate diverse project requirements, ZH Precision delivers multiple die casting solutions optimized for different alloys and design complexities. Our core capabilities cover hot-chamber and cold-chamber die casting to serve varied component specifications and production demands.
Hot-chamber die casting
Hot-chamber die casting is a high-efficiency molding process tailored for zinc, magnesium and other low-melting-point alloys. Featuring a submerged gooseneck injection structure, it achieves rapid cycle times, superior molten metal fluidity and reliable dimensional repeatability. The process yields smooth as-cast surfaces with fewer inherent defects, making it ideal for high-volume manufacturing of small, intricate components including electronic connectors, precision brackets and thin-wall enclosures.
Cold-chamber die casting
Cold-chamber die casting is engineered for high-melting-point alloys such as aluminum and magnesium. Molten metal is ladled into the shot chamber each cycle, reducing thermal wear on tooling and enabling precise injection control. Suitable for thick-wall, high-strength structural parts, it delivers stable dimensional accuracy and mechanical performance for medium-to-large industrial mass production.
Comprehensive Secondary & Assembly Services
We deliver fully integrated in-house secondary processing and turnkey assembly solutions. Standardized workflows, unified quality control and centralized project management streamline your supply chain, reduce cross-supplier risks, and maintain stable, predictable lead times for all cast components.
Precision Machining
Precision CNC machining achieves accurate dimensions and strict tolerances for all cast components.
Assembly Services
Turnkey assembly and value-added work produce complete finished subassemblies per your specifications.
Quality Assurance
Full metrology inspection and full traceability satisfy rigorous industrial and automotive quality standards.
Logistics Support
Custom packaging and steady scheduling enable consistent, dependable delivery worldwide.
Die Casting Parts We Manufactured
We hold extensive experience producing communication enclosures and heat sinks. Our representative products include RRU enclosures, aluminum die cast heat sink enclosures for 5G Small Cells, 5G Micro Base Stations, and macro 5G base stations, all manufactured to customer design specifications.
ZH Precision Die Casting Capabilities
Rigorous process control underpins our high-pressure die casting, delivering consistent quality and stable dimensions for custom components. All parts are verified for surface quality, internal soundness and dimensional precision. We follow ISO 8062-3 for casting tolerances and ISO 2768-m for machined features to guarantee repeatable production.
| Title | Description |
|---|---|
| Minimum Part Weight | 0.005 kg |
| Maximum Part Weight | 50 kg |
| Minimum Part Size | Ø17 mm × 4 mm |
| Maximum Part Size | 300 mm × 650 mm |
| Minimum Wall Thickness | 0.8 mm (material dependent) |
| Maximum Wall Thickness | 12.7 mm (DFM review required) |
| Typical Die Life | Al/Mg: ~100,000 shots; Zinc: ~1,000,000 shots |
| Minimum Order Quantity | 1 piece for prototypes |
| Standard Lead Time | 20–25 days, subject to part complexity |
Ready to develop your custom die casting parts?
Share your drawings, target specifications and order volume. Our engineering team will review your project and provide tailored solutions promptly.
Die Casting Material Options
Our available die casting materials cover aluminum, zinc and magnesium alloys. All alloy raw materials comply with international specifications and are supported by full traceable material test certificates.
Aluminum Die Casting
Aluminum alloys provide a balanced combination of strength, low density, and thermal stability. They offer good corrosion resistance, stiffness, and dimensional consistency, making them suitable for components requiring structural reliability and heat dissipation performance.
Available Grades: ADC06, ADC12, A360, A380, A383, LM06, HH334R
Zinc Die Casting
Zinc alloys feature outstanding fluidity and dimensional stability, capable of forming intricate thin-wall geometries. They deliver excellent surface finish and support various plating, polishing and coating treatments for precision and aesthetic components.
Available Grades: Zamak 3, Zamak 5, Zamak 7, ZA-8
Magnesium Die Casting
Magnesium alloys have the lowest density among commercial die casting materials, enabling significant weight reduction. They maintain decent rigidity and shock resistance, widely used for lightweight structural assemblies.
Available Grades: AZ91D, AM60B, AM50A
DFM Guidelines for Die Casting Parts
Follow these standardized design principles to enhance castability, minimize defects and control manufacturing costs. Our engineering team offers complimentary DFM evaluation to optimize your aluminum die casting projects before mold development.
| Design Item | Design Recommendations & Benefits |
|---|---|
| Uniform Wall Thickness | Maintain consistent wall thickness whenever possible to improve metal flow, reduce shrinkage, and prevent porosity caused by uneven cooling. Avoid sudden thickness changes that may affect casting quality. |
| Draft Angle Design | Add proper draft angles on vertical surfaces to ensure smooth part ejection, reduce die wear, and improve tooling life. Typical draft angles depend on alloy, surface finish, and part depth. |
| Rib Design | Use ribs to increase structural strength without adding excessive material thickness. Rib thickness is typically designed at 40–60% of the adjacent wall thickness to reduce filling issues and shrinkage defects. |
| Fillet and Corner Radius | Avoid sharp corners and apply suitable radii to improve molten metal flow, reduce stress concentration, and extend die service life. |
| Boss and Hole Design | Design mounting bosses with proper support and avoid excessive material buildup around holes to minimize porosity and dimensional variation. |
| Machining Allowance | Reserve machining allowance only for critical surfaces and features to control material usage, processing time, and overall production cost. |
Free Professional DFM Analysis Service
We provide free DFM reviews and design optimization suggestions for all custom die casting projects. Our engineering team helps clients avoid manufacturability risks, reduce production costs and accelerate project schedules before mold production starts.
Surface Finishes for Die Casting Parts
Die cast parts can be finished with anodizing, polishing, sand blasting, tumbling, electropolishing, Alodine, and electroplating based on alloy type and application needs. These finishes improve appearance, corrosion resistance, and surface performance.
As Cast
The natural surface finish after die casting, suitable for parts where machining or additional finishing is not required.
Anodizing
Provides enhanced corrosion resistance and a durable surface layer, commonly used for aluminum die cast parts requiring improved appearance and protection.
Polishing
Creates a smooth, reflective surface finish for components requiring improved appearance and a refined surface texture.
Sand Blasting
Produces a uniform matte texture while removing surface imperfections and improving the appearance of die cast parts.
Tumbling
Improves surface consistency by removing sharp edges, burrs, and minor imperfections through mechanical finishing.
Electropolishing
Enhances surface smoothness and cleanliness while improving corrosion resistance for applications with strict surface requirements.
Alodine
Provides corrosion protection and improves paint adhesion while maintaining the original dimensions of aluminum castings.
Electroplating
Applies a metal coating to improve corrosion resistance, wear performance, or decorative appearance.
Die Casting Parts Quality Control
Our die casting operations are supported by ISO 9001:2015 and IATF 16949:2016 certified quality management systems, with first-piece inspection, in-process checks, and final inspection applied throughout production.
We inspect common casting defects such as porosity, blowholes, shrinkage, cold shuts, and flash. Critical components undergo CMM measurement, flatness inspection, and surface evaluation to verify dimensional accuracy and appearance requirements.
Alloy composition verification, mold condition monitoring, and process parameter control help maintain stable casting performance from initial production through mass manufacturing.
Why Global OEMs Trust ZH Precision
We deliver high-performance aluminum die cast components to leading global OEMs such as Foxconn, Airspan, Oracle, Juniper, Alnan and SAGERAN. Supported by consistent quality, robust production capacity and agile engineering backing, ZH Precision serves as your reliable die casting manufacturing partner.
Cost-Effective Solutions
We cut your overall die casting costs via professional mold design and free DFM optimization. Optimized part structures and material utilization help reduce unit prices for mass production.
Fast Lead Time
Complete in-house production supports rapid sampling and high-volume manufacturing. Real-time project tracking and flexible scheduling secure on-time delivery for global orders.
Quality Assurance
ISO 9001:2015 certified production. Full-process quality control includes incoming material checks, in-process testing, FAI and pre-shipment inspection to ensure consistent precision.
What is Die Casting?
Die casting is a high-precision metal forming process that injects molten metal into steel die cavities under high pressure. The process is widely used for mass production of complex components with tight dimensional control and good as-cast surface finishes.
Steel dies are the core tooling used in die casting and can be designed with single or multiple cavities to meet different production requirements. Manufacturers select hot-chamber or cold-chamber machines based on the alloy material being processed. After cooling and solidification, finished castings are removed from the dies and may undergo secondary machining or surface finishing when required.
Advantages of Die Casting
Complex Part Design：Produces detailed geometries, thin walls, and integrated features that reduce the need for multiple components.
High Production Efficiency：Supports fast cycle times and consistent production output for medium to high-volume manufacturing.
Dimensional Accuracy：Maintains tight dimensional control and repeatable quality across large production runs.
Excellent Surface Finish：Provides smooth as-cast surfaces that minimize additional finishing requirements.
Material Efficiency：Reduces material waste while creating lightweight and structurally optimized metal parts.
Cost-Effective Production：Lowers per-part costs through efficient manufacturing processes and high-volume production capability.
Die Casting Applications
Automotive Components：Produces lightweight and durable parts such as housings, brackets, structural components, and engine-related components.
Electronics & Electrical Parts：Manufactures precision metal components including enclosures, connectors, heat sinks, and device housings.
Industrial Equipment：Supports the production of machine parts, frames, covers, and functional components requiring strength and dimensional stability.
Telecommunications Equipment：Provides metal housings, chassis, and thermal management components for communication devices.
Consumer Products：Creates durable and complex metal parts for appliances, tools, and consumer electronic products.
Medical Equipment：Produces precision metal components requiring consistent quality, reliable performance, and complex designs.
Frequently Asked Questions
Die casting project costs are mainly determined by mold complexity, part size, alloy material, wall thickness, production volume, and required post-processing. Higher precision requirements, intricate geometries, and additional surface finishes will also affect the final quotation.
Typical die casting defects include porosity, shrinkage, flash, cold shuts, and surface oxidation. These issues are mainly caused by unstable injection speed, improper mold temperature, and poor venting, which can be effectively controlled via optimized DFM and precise process parameters.
We provide a full range of surface treatments for die cast parts, including polishing, sandblasting, anodizing, powder coating, plating, and passivation. Different finishes improve corrosion resistance, wear resistance, and aesthetic appearance for diverse application scenarios.
Standard die casting lead time depends on mold development and production quantity. New mold fabrication usually takes 2–4 weeks, and mass production can be completed within 1–2 weeks according to order volume. Rush orders are available upon request.
Our die casting process maintains stable industrial-grade tolerances. General dimensional tolerance ranges from ±0.1mm to ±0.3mm, and tighter precision can be achieved with secondary CNC machining to meet strict assembly and industrial standards.