Custom Die Casting Services: Precision Aluminum, Zinc & Magnesium Parts From China Manufacturer
Overview of Our Custom Die Casting Services
Die Casting is a high-volume, high-precision metal forming process that injects molten non-ferrous alloy into hardened steel dies under extreme pressure, to produce complex, thin-wall parts with consistent dimensional accuracy across production runs.
At KINGMETAL, we deliver end-to-end custom die casting solutions from initial DFM review, in-house mold fabrication and prototype sampling, all the way to mass production, secondary machining and custom Surface Finishing. With 20+ years of experience serving global clients across 80+ countries, we specialize in non-standard, application-specific die cast components that match strict performance, tolerance and durability requirements.
Our production bases across Zhongshan, Foshan, Huizhou and Vietnam house 60+ die casting machines, supported by 130+ engineering and QC staff. We handle everything from 1-piece prototype trials to monthly 3 million piece mass production runs, with zero quality evasion and full production liability.
Our Full Die Casting Process Capabilities
1. Core Die Casting Processes
We run three mainstream die casting technologies to match different alloy, complexity and volume requirements:
- Cold Chamber Die Casting: 42 machines with 280–3500 ton clamping force, for aluminum, copper and high-melting magnesium alloys. Ideal for structural components, large housings and high-strength parts; cycle time 60–180 seconds per shot.
- Hot Chamber Die Casting: 18 machines with 200–800 ton clamping force, for zinc, tin and low-melting magnesium alloys. Best for small, high-volume fittings and decorative parts; faster cycle time of 15–60 seconds per shot with longer die service life.
- Vacuum Assisted Die Casting: Available for critical sealed components. Removes 90%+ trapped air from die cavities before injection, cutting internal porosity by 85% and improving mechanical strength by 20% for pressure-bearing and structural parts.
2. Available Die Cast Alloys
We stock standard industrial alloys and support custom formulation for special working conditions:
- Aluminum Alloys: ADC12 (general industrial housings), A380 (automotive structural parts), A413 (high thermal conductivity heat sinks), AlSi9Cu3 (high strength components)
- Zinc Alloys: Zamak 3 (general purpose castings), Zamak 5 (higher strength fittings)
- Magnesium Alloys: AZ91D (lightweight structural parts), AM60B (high ductility components)
3. In-House Secondary Operations
No outsourcing quality risks – all post processing is completed in our own workshops:
- Precision 5-axis CNC milling, turning, tapping and drilling for ±0.005mm tolerance features
- Surface finishing: anodizing, powder coating, electroplating, sandblasting, chromate conversion coating
- Insert installation, sub-assembly and custom packaging per client requirements
End-to-End Die Casting Workflow (From Design to Delivery)
We follow a standardized, traceable production flow for every custom die casting project, with clear timelines and quality gates at each stage:
- Free DFM Analysis – Submit your STEP/IGS files, our engineers return manufacturability feedback, wall thickness optimization, draft angle suggestions and cost estimation within 2 working hours.
- Mold Design & Fabrication – Mold flow simulation first, then CNC machining of H13 tool steel dies with cooling channels, ejector systems and gating designs. Standard mold lead time: 7–12 working days; rapid prototype tooling: 3–5 days.
- Prototype Sampling – T1 sample production, dimensional inspection and functional testing. We adjust mold parameters until samples meet your specifications; sample freight is covered by client.
- Mass Production – Automated batch production with SPC process monitoring. Batch size from 50 pieces to 3,000,000 pieces, with full production traceability.
- Post Processing – CNC machining, surface treatment and assembly per drawing requirements.
- Quality Inspection & Delivery – 100% visual check, CMM dimensional sampling, X-ray porosity test for critical parts. Packed and shipped via sea/air/express with full tracking.
Key Industries & Typical Applications
Our custom die casting services serve high-demand industries with strict performance and compliance requirements:
- New Energy Automotive: Motor housings, battery tray brackets, ECU enclosures, charging connector housings, suspension brackets. Built to IATF16949 standards, with vibration resistance and thermal cycling performance validation.
- 5G Telecommunications: Filter cavities, waveguide housings, base station heat sinks, structural mounting brackets. High dimensional stability for signal shielding and sealing performance.
- Industrial Equipment: Pump valve bodies, hydraulic system housings, motor end covers, gearbox casings. High pressure resistance and long-term corrosion durability.
- Consumer Electronics: Device housings, heat sinks, connector shells, camera structural parts. Thin-wall design and smooth surface finish for assembly and appearance.
- Medical Devices: Equipment structural frames, diagnostic instrument housings, fluid control components. Biocompatible alloy options and ISO13485 compliant production environment.
Why Choose KINGMETAL As Your Die Casting Partner
1. Precision & Quality You Can Verify
We hold dimensional tolerances from ±0.005mm for precision machined features to ±0.03mm for as-cast surfaces. Our full QC system includes CMM full dimensional inspection, X-ray porosity testing, hardness testing and surface roughness measurement. Mass production batch reject rate is stably controlled below 0.3%, far below industry average.
2. Flexible Capacity & Reliable Delivery
No MOQ limits – we accept 1-piece prototype orders and scale seamlessly to mass production. Fastest prototype lead time is 3 working days; standard mass production lead time is 10–15 working days. Multi-base production layout across China and Vietnam disperses supply chain risks and handles tariff fluctuations for global buyers.
3. One-Stop Full Process Service
From mold design, die casting, CNC machining to surface finishing and assembly, all processes are completed in-house. No multi-supplier coordination, no quality shift between batches, and single point of contact for all project issues.
4. Cost Optimized Cooperation
- Full mold fee refund once agreed production volume is reached, zero upfront mold investment risk
- 5% R&D subsidy for first orders over 50,000 USD, directly deducted from payment
- Long term price lock mechanism for annual orders, hedging raw material price fluctuation risks
5. Full Compliance & After-Sales Guarantee
All production follows ISO9001, IATF16949 and ISO14001 systems. Products meet RoHS, REACH and SGS certification standards. For any manufacturing-caused quality issues, we provide 100% recall/rework with full round-trip freight coverage, plus formal 8D root cause analysis reports.
Common Die Casting Defects & Our In-Plant Solutions
【图片插入位置：本节末尾】 图片类型：缺陷与优化对比图 图片内容：左侧为气孔、冷隔、翘曲缺陷特写，右侧为对应优化后的合格零件； Alt 标签：Common die casting defects and optimized solutions from KINGMETAL engineering team.
We resolve common die casting defects through systematic mold and process optimization, not just post-production sorting:
- Porosity: Caused by trapped air during injection. Solved via vacuum die casting system, optimized gating positions and exhaust groove design on molds.
- Cold Shut: Caused by unbalanced metal flow front cooling. Fixed through mold flow simulation to adjust runner size and injection speed profiles.
- Shrinkage Cavity: Caused by uneven solidification. Resolved with targeted cooling channel layout and sequential solidification control.
- Part Warpage: Caused by unbalanced residual stress. Corrected with distributed cooling circuits, optimized ejection sequence and post-casting stress relief aging.
FAQs About Our Custom Die Casting Services
Q1: What is your minimum order quantity for custom die casting parts?
A: We have no rigid MOQ. We accept prototype trial orders starting at 1 piece, and support small batch runs of 50–200 pieces for product validation.
Q2: How long does it take to build a custom die casting mold?
A: Simple small-sized molds take 7 working days; complex multi-cavity structural molds with undercuts take 10–14 working days. Rapid prototype tooling is available in 3–5 days for urgent projects.
Q3: What dimensional tolerances can you hold on die cast parts?
A: As-cast dimensional tolerance is typically ±0.03mm for general features. For precision machined surfaces, we can hold ±0.005mm with our 5-axis CNC equipment.
Q4: Do you provide free DFM analysis for custom die designs?
A: Yes. All clients receive free DFM manufacturability review within 2 working hours after submitting CAD files. We point out design risks and offer optimization suggestions to reduce production cost and defect rate.
Q5: Is the mold fee refundable for mass production orders?
A: Yes. 100% of the mold cost will be refunded once your cumulative order reaches the agreed volume threshold. Specific terms can be customized based on your project scale.
Q6: What certifications do your die casting products have?
A: Our factory is ISO9001, IATF16949 and ISO14001 certified. All products can be provided with RoHS, REACH and SGS test reports as required.
Q7: Can you handle secondary machining and surface finishing?
A: Yes. We have in-house 5-axis CNC workshops and surface treatment lines. We provide full one-stop service from die casting to finished, ready-to-assemble parts.
Q8: What do you do if there are quality issues with delivered parts?
A: We respond within 2 working hours for all quality complaints, launch 8D root cause analysis, and provide 100% free rework/replacement with round-trip freight covered for all manufacturing-caused defects.
Get Your Custom Die Casting Quote Today!
