Custom Die Casting Services
ZH Precision is a custom die casting manufacturer based in China, delivering OEM die casting services for aluminum, zinc, and magnesium components. From design for manufacturability (DFM) to mass production and finishing, we provide precision die casting with ISO 9001:2015 and IATF 16949:2016 certification. Request a free quote to discuss your project.
- Flexible Low-Volume Production
- Expert Engineering Support
- Transparent Quotations
Verify Certifications On Demand：ISO 9001:2015 | IATF 16949:2016
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Chinese Die Casting Manufacturer，On-Time Monthly Delivery
ZH Precision is a leading ISO9001 certified custom die casting manufacturer based in China, serving global OEMs across Europe and North America. Our workshop features cold and hot-chamber machines from 88T to 3000T, supporting parts from small electronic housings to large automotive components. We deliver precision aluminum, zinc, and magnesium die castings with international quality at competitive costs.
Engineering-Driven Die Casting Services
Aluminum Die Casting
High-rigidity aluminum die castings with controlled dimensional tolerance and outstanding thermal conductivity. Optimized for structural load-bearing and heat-dissipating industrial components.
Zinc Die Casting
High-fluidity zinc alloy casting enables thin-wall forming and intricate feature molding. Delivers high surface flatness and stable repeatability for high-volume precision parts.
Magnesium Die Casting
Low-density magnesium cast components with high specific strength and vibration resistance. Engineered for lightweight structural applications with strict weight control requirements.
Comprehensive Secondary & Assembly Services
We deliver fully integrated in-house secondary processing and turnkey assembly solutions. Standardized process workflows, unified quality oversight and centralized project management streamline your procurement chain, lower cross-supplier risks, and sustain stable, predictable lead times for all cast components.
Secondary Processing
Professional gate cutting, flash trimming and deburring clean raw cast surfaces for subsequent operations.
CNC Precision Machining
Milling, turning, drilling, tapping and grinding achieve precise dimensions and complex structural features.
Surface Treatment
Polishing, electroplating, coating and passivation enhance wear resistance, corrosion protection and appearance.
100% Full Inspection
Every part undergoes 100% inspection to verify all A, B, and C surfaces meet quality standards.
Provide the Most Cost-Effective Die Casting Solutions
Our engineers will review your design and provide cost-effective die casting solutions (aluminum, zinc, magnesium) with secondary machining and finishing, ensuring part stability, repeatability and reliable performance.
ZH Precision Die Casting Capabilities
| Title | Description |
|---|---|
| Minimum Part Weight | 0.001 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 |
| Maximum Wall Thickness | 12.7 mm |
| Quality Control | ISO 9001 Certified |
| Maximum Die Life | Mg/Al: ~100,000 cycles; Zinc: ~1,000,000 cycles |
| Minimum Order Quantity | 1 piece |
| Standard Lead Time | 20–25 days, depending on mold type and part complexity |
Die Casting Materials
Choosing qualified die casting materials determines part performance, cost efficiency and production stability. All aluminum, zinc and magnesium alloys we use fully meet industrial grade specifications and RoHS environmental compliance. ZH Precision provides professional material selection consultation to match your design, application and mass production requirements. Contact us to get technical support and a fast project quotation.
Aluminum
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.
- ADC06
- ADC12
- A360
- A380
- A383
- LM06
- HH334R
Zinc
Zinc alloys feature excellent fluidity and castability, supporting thin walls and fine details. They deliver good mechanical strength, dimensional stability, and surface finish consistency, with minimal variation across production runs.
- Zinc Alloy 2
- Zamak 3
- Zamak 5
- Zamak 7
- ZA-8
- EZAC
- ZA-27
Magnesium
Magnesium alloys have very low density and a high strength-to-weight ratio. They offer good rigidity, vibration damping properties, and dimensional accuracy while minimizing overall component weight.
Common alloys: AZ91D, AM60B
Typical applications: Aerospace brackets, lightweight structural parts, electronic enclosures
Process: Hot chamber or cold chamber die casting (depending on part geometry)
Surface Finishes for Die Casting Parts
ZH Precision offers a variety of die casting finishes to match your parts’ functional, aesthetic, and durability needs. From enhanced corrosion resistance to polished surfaces or improved performance, we have the right option for your project. Explore all finishing options →
Standard (As-Cast)
Delivers a functional finish with smooth surfaces and minimal tool marks, ideal for non-cosmetic die casting applications.
Anodizing
Enhances corrosion resistance and surface hardness while adding color for improved durability and appearance.
Polishing
Polishing achieves a high gloss finish, reducing surface roughness and enhancing the aesthetic appeal of metals.
Sand Blasting
Sand blasting uses pressurized sand or other media to clean and texture the surface, creating a uniform, matte finish.
Tumbling
Tumbling smooths and polishes small parts by friction and abrasion in a barrel, offering a consistent but slightly textured finish.
Electropolish
Electropolish is a chemical process that smooths and brightens surfaces while improving corrosion resistance.
Alodine
Alodine coating provides corrosion protection and improves paint adhesion, mainly used on aluminum surfaces.
Electroplating
Electroplating bonds a thin metal layer onto parts, improving wear resistance, corrosion resistance, and surface conductivity.
Die Casting Quality Control
ZH Precision strictly follows ISO 9001:2015 and IATF 16949:2016, with all alloy materials fully RoHS compliant. We adopt full-cycle quality control for die casting, covering raw material audit, in-process defect prevention and 100% final inspection. All castings comply with ASTM E505 porosity rules and standard casting tolerance specifications, ensuring stable dimension, qualified surface and long-term consistent performance.
1. Material Verification
All incoming aluminum, zinc and magnesium alloys are strictly audited to meet drawing specs, industrial norms and RoHS environmental compliance.
2. In-Process Defect Control
Real-time monitoring controls cold shut, crack, shrinkage and flash. Standard dimensional management keeps casting structures within required tolerances.
3. 100% Final Inspection
Each finished part undergoes full surface checking, dimensional testing and functional verification to meet customer technical and mass production quality standards.
Why Global OEMs Trust ZH Precision
We supply premium aluminum die casting parts for leading global OEMs, including FOXCONN, Airspan, ORACLE, JUNIPER, Alnan and SAGERAN. With stable quality, strong production capacity and responsive engineering support, ZH Precision is your trusted die casting supplier.
Cost-Effective Solutions
We cut your overall die casting costs with professional mold design and free DFM optimization. Optimized structure and material utilization lower unit prices for mass production.
Fast Lead Time
Full in-house production capacity enables rapid sampling and bulk manufacturing. Real-time project monitoring and flexible scheduling ensure on-time delivery for global orders.
Quality Assurance
ISO 9001:2015 certified production. Full-process quality control covers incoming checks, in-process testing, FAI and pre-shipment inspection to guarantee stable precision.
What is Die Casting
Die casting is a high-pressure manufacturing process for non-ferrous alloys including aluminum, zinc and magnesium. Molten metal is rapidly injected into hardened steel molds, then cooled and solidified to take shape. Finished parts are ejected automatically through mold opening, supporting continuous cyclic production with high efficiency and stable output.
This process delivers precise dimensions and smooth as-cast surfaces for near-net-shape components, greatly reducing secondary machining workload. Despite higher upfront mold costs, it provides significant cost benefits for mass production. It is widely adopted to manufacture lightweight, high-rigidity parts for automotive, communication, electronics and general industrial machinery.
Hot-Chamber vs Cold-Chamber Die Casting
Hot chamber die casting is a high-efficiency process optimized for zinc and low-melting alloys. Its submerged injection system ensures fast cycle speeds and superior fluidity. It delivers smooth surface finishes, precise dimensions and stable repeatability, ideal for high-volume production of small, intricate parts like connectors, brackets and thin-wall housings.
Cold chamber die casting is designed for high-melting alloys such as aluminum and magnesium. Molten metal is loaded into the shot chamber per cycle, lowering equipment thermal load and improving injection control. It supports thick-wall, high-strength structural components, maintaining reliable accuracy and stable performance for medium to high-volume industrial production.
When to Use Die Casting
1.Die casting is the preferred manufacturing method for medium and high-volume industrial projects that require non-ferrous metal components.
2.It is best selected when your design involves complex outlines, thin-wall structures and integrated functional features that cannot be efficiently made by conventional machining.
3.If your project demands stable batch consistency, precise mounting dimensions and controlled production costs, die casting offers clear advantages over stamping, forging or one-off CNC parts.
4.It is highly suitable for aluminum, zinc and magnesium components widely applied in communication equipment, automotive systems, power electronics and industrial machinery.
Advantages of Die Casting
1.High mass production capacity to shorten lead time and reduce unit cost.
2.High dimensional stability and tight tolerance for precise assembly and part interchangeability.
3.One-piece forming for complex shapes, thin walls and irregular structural details.
4.Good structural rigidity and uniform mechanical properties for long-term service.
5.Excellent surface condition that adapts to various surface finishing processes.
6.Wide alloy selection to meet lightweight, heat dissipation and shielding demands.
7.Minimize secondary processing and assembly procedures to cut overall expenses.
8.High production consistency, ideal for long-term batch OEM cooperation.
Frequently Asked Questions
A: Die casting has higher upfront tooling cost but low unit production cost. It delivers the best economic benefit for medium and high-volume orders. For low-batch projects, our engineering team can optimize mold structure and process plan to control overall expenses and balance cost and production feasibility.
A: Common defects include porosity, shrinkage, cold shut and surface burrs. We control raw material purity, stabilize injection pressure and mold temperature, and implement full in-process inspection. Key dimensions and structural performance are fully checked to ensure stable batch quality for assembly and long-term use.
A: Yes. Mature die casting processes and precision tooling ensure stable dimensional consistency. For mating and installation features, we support secondary CNC finishing to achieve tighter tolerances. All parts maintain good interchangeability for mass assembly.
A: Custom die casting molds take 20–35 days depending on complexity. After sample confirmation, mass production can start quickly with stable monthly output. We arrange production scheduling in advance to guarantee on-time delivery and support long-term order replenishment.
A: Absolutely. Our engineering team reviews your design at the early stage. We optimize wall thickness, fillet transition, draft angle and structural layout to avoid casting defects, simplify production and lower tooling and processing costs for your project.