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Die Casting

We have established a fully integrated mold design and manufacturing system, supported by industry-leading design software (UG NX, PTC Creo, AutoCAD) and advanced simulation tools (FLOW-3D CAST). Our comprehensive process covers every stage from initial concept to final production, ensuring optimal mold performance and part quality.
 

Industry-Specific Expertise

Our die-casting services cater to mission-critical applications across multiple sectors:
Automotive: Engine blocks, transmission housings, e-mobility components
Aerospace: Lightweight structural parts, avionics enclosures
Medical Equipments: MRI components, surgical instrument housings (ISO 13485 compliant)
Consumer/Industrial: Bicycle drivetrain parts, power tool housings

Technical Capabilities

Precision Standards:
Standard tolerance: IT10-IT11 (DIN ISO 286)
Surface finish: Ra 1.6-3.2μm (as-cast)

High-pressure die-casting (HPDC) achieves:
Local surface roughness down to Ra 0.8μm
Tighter tolerances (IT8-IT9 for critical features)

Material Portfolio

Material Family Alloy Examples Key Properties
Aluminum ADC12, A380 Excellent strength-to-weight ratio
Magnesium AZ91D, AM60B Extreme lightweighting (ρ=1.74 g/cm³)
Zinc ZAMAK 3, 5 Superior fluidity for thin walls
Copper C87300, C87850 High thermal/electrical conductivity
Specialty Pb-Sn alloys Radiation shielding applications

Cost-Saving Advantages

Net-shape capability: 
60-80% of components require no secondary machining

Integrated features:
 Threads, bosses, and logos cast directly

Tooling longevity: 
150,000+ shots for aluminum molds (H13 steel, HRC 46-50)

Advanced Process Control

Our scientific approach combines:
Mold Flow Analysis: Predicts porosity, thermal stresses, and fill patterns
Real-time Monitoring: Shot velocity: 2-6 m/s (optimized per material)
Die temperature: 150-300°C (closed-loop control)
 
Post-Casting Validation:
X-ray inspection (ASTM E155)
CMM measurement (±0.02mm repeatability)
Sustainable Manufacturing: 95% material utilization through runner recycling
Energy-efficient melting systems (800kW/hr savings vs conventional): REACH/ROHS compliant alloys

Why Partner With Us?

Turnkey solutions: 
From DFM feedback to final assembly

Prototype to mass production: 
1-week rapid tooling available

Industry certifications: 
We are ISO 9001 certified. Our in-house production quality meets IATF 16949, AS9100 and NADCAP certification requirements.

With over 15 years of die casting excellence, we can help you achieve superior quality, reduced lead times and significant cost savings for your next project. Contact our engineering team today for a free Design for Manufacturability (DFM) analysis.

Display of Machined Finished Product Cases

If you would like to learn more about these finished products, you can click to find out more details about them.

Custom Die Casting: Your Manufacturing Edge

Let’s cut to the chase—off-the-shelf manufacturing solutions often mean compromise. Custom die casting eliminates those trade-offs by giving you exactly what your product demands. Here’s why smart engineers and procurement teams are making the switch:
1. Precision That Actually Matters
Tired of hearing “good enough”? Custom die casting delivers tolerances as tight as ±0.005mm—critical for parts where a hair’s breadth affects performance (think aerospace actuators or medical implants). Unlike generic casting, we tweak everything—from mold temperatures to injection speeds—to match your part’s geometry.

2. Stop Paying for What You Don’t Need
Why buy a bulky, over-engineered component when you can have one optimized for your application? Custom die casting lets you:
Shed weight without sacrificing strength (e.g., magnesium parts 35% lighter than aluminum)
Integrate features like threads, cooling channels, or mounting points—no secondary machining required
Choose the right alloy (not just what’s in stock) for corrosion resistance, thermal conductivity, or EMI shielding

3. Speed That Beats Traditional Machining
Need prototypes yesterday? Custom die casting isn’t just for mass production. With rapid tooling (as fast as 7 days), you can test designs before committing to full-scale production. And once approved, cycle times drop to under 30 seconds per part—no CNC bottlenecks.
4. Hidden Cost Killers? Eliminated.
Generic casting often leads to:
Excessive machining (wasting material and labor)
Assembly headaches (multiple parts = more failure points)
Scrap from poor fits (because “close enough” isn’t)
Custom solutions fix this by:
Net-shape casting – Up to 80% of parts need zero post-machining
Single-piece designs – Fewer components = lower assembly costs
Predictable quality – Real-time monitoring catches defects before they scrap a batch

5. Materials That Do More
Beyond standard aluminum, custom die casting unlocks:
Zinc for thin-wall complexity (as slim as 0.5mm)
Copper alloys for heat exchangers (thermal conductivity 2× aluminum)
High-silicon aluminum for wear resistance (extends part life 3×)

6. Scalability Without the Headaches
Whether you need 50 prototypes or 500,000 production parts, custom tooling adapts seamlessly. No redesigns, no requalification—just consistent quality at any volume.
 
7. Sustainability Built In
Custom isn’t just about performance—it’s about responsibility:
Less waste (95% material utilization vs. 60% in machining)
Energy efficiency (die casting uses 50% less energy than sand casting)
Closed-loop recycling (scrap gets remelted, not trashed)
The Bottom Line:
Custom die casting isn’t a luxury—it’s how you outmaneuver competitors. By tailoring every step to your design (not the other way around), you get:
✔ Faster time-to-market
✔ Lower total cost (despite higher initial tooling)
✔ Performance generic suppliers can’t match

Ready to stop compromising? Let’s discuss how custom die casting can solve your toughest manufacturing challenges.

Description Of The Processing Procedure

Imagine that turning liquid metal into precision parts is like baking a Michelin three-star dessert - it requires a precise recipe, perfect heat and an artist's eye. This is the charm of custom die casting. Let's unveil the six key steps of this metal magic:
  • Design Dance (48 hours)
    Our engineers will review your 3D drawings like jewelry designers and use Flow-3D software for "digital rehearsal". Last time, we helped Tesla suppliers discover a hidden design trap - saving $28,000 in mold modification fees. Did you know that we can simulate every vortex of metal flow in the virtual world, just as accurately as predicting the weather.
  • The birth of the mold (15-25 days)
    This is not an ordinary steel block engraving. We use a million-dollar 5-axis machine tool to engrave finer lines than a hair on H13 steel with a hardness comparable to diamond. Latest case: The mold made for a medical customer has 236 cooling channels, which shortens the production cycle by 22%. Each mold is as precise as a Swiss watch and has a lifespan of up to 150,000 die castings.
  • Metal Symphony (temperature control ±3°C)
    We treat aluminum alloy as Michelin ingredients:
    Spectrometer real-time monitoring, just like doing a blood test for metal
    Argon gas degassing is equivalent to a high-level sobering process
    720℃ molten soup should flow as smoothly as latte
    The recently developed special formula has increased strength by 40% but is lighter, and a patent is being applied for.
  • Injection Art (0.02-second precise burst)
    This die-casting machine worth tens of millions is more violent than the F1 racing engine:
    Slow stage: 0.4m/s, as gentle as pouring champagne
    High-speed sprint: 5m/s, comparable to a bullet out of the barrel
    Pressure stage: 900 atmospheres, higher pressure than the deep sea
    The project done for Porsche last year, the control accuracy reached a terrifying ±0.3m/s.
  • Cooling magic (temperature difference control <5°C)
    Our mold has 38 built-in temperature sensors, combined with AI algorithms:
    "Slow cooking" for thick-walled parts
    "Quick freezing and preservation" for thin-walled areas
    Automatically adjust the cooling rate, just like a smart air conditioner
    This technology reduces the deformation of a certain aerospace part by 67%.
  • Ultimate beauty (from rough to art)
    Laser deburring: more precise than beautician exfoliation
    Micro-arc oxidation: put nano-level armor on metal
    Magnetic polishing: make the surface as smooth as baby skin
    The latest treatment process developed for Apple's supply chain has an amazing Ra value of 0.2μm.
    The sharp eyes of quality inspection
    Industrial CT scanning: even 0.05mm bubbles are nowhere to be hidden
    Robot three-coordinate: 300 measurement points in just 2 minutes
    Destructive testing: sacrifice 30 parts per month to seek the truth
    Last quarter, a yield rate of 99.92% was achieved, and customer complaints were zero.

Display of Processable Materials

Surface Treatment Exhibits for Fabricated Components

Surface treatments for die-cast components serve multiple critical functions - enhancing corrosion resistance, improving wear characteristics, enabling electrical conductivity, and providing aesthetic appeal. Each alloy family requires specialized approaches to maximize performance. This guide examines the complete range of surface finishing options for these four major die-casting alloys.
 

1. Aluminum Alloy Surface Treatments

Anodizing
Type II (Decorative): 5-25μm thickness, wide color options
Type III (Hardcoat): 25-150μm, Vickers hardness 400-600
Chromic acid process for aerospace applications
New developments: Self-lubricating porous anodize layers

Conversion Coatings
Chromate conversion (Alodine): Gold iridescent finish
Trivalent chromium alternatives (RoHS compliant)
Phosphoric acid anodize for paint adhesion
Plating Options
Electroless nickel: 5-50μm, uniform deposition
Nickel electroplating with copper strike layer
Specialty finishes: Silver for reflectivity, tin for solderability

Organic Coatings
Powder coating: Polyester, epoxy, hybrid formulations
Wet paint systems with pretreatment
Fluoropolymer coatings (PTFE, PFA) for release properties
 

2. Zinc Alloy Finishing Solutions

Electroplating Systems
Acid copper underlayer (5-10μm)
Bright nickel (10-20μm) + microporous chromium (0.3μm)
Zinc-nickel alloy plating (12-15% Ni) for automotive

Passivation Treatments
Hexavalent chromium (limited use)
Trivalent chromium passivates (blue, black, olive drab)
Molybdenum-based alternatives

Mechanical Finishes
Vibratory finishing with ceramic media
Barrel tumbling for deburring
Brush polishing for decorative effects

5.Advanced Surface Technologies

Physical Vapor Deposition (PVD)
Titanium nitride (TiN) - gold color, HV 2000+
Chromium nitride (CrN) - silver-gray, excellent wear
Diamond-like carbon (DLC) - low friction

Thermal Spray Coatings
Plasma sprayed alumina
HVOF tungsten carbide
Flame sprayed polymers

Laser Surface Engineering
Laser cladding for repair
Laser texturing for oil retention
Laser cleaning pretreatment

3. Copper Alloy Surface Enhancement

Electrochemical Finishes
Nickel plating (electrolytic and electroless)
Silver plating for electrical contacts
Gold flash over nickel barrier layer

Chemical Patinas
Liver of sulfur oxidation (antique finishes)
Ammonium sulfide treatments
Hot black oxide processes

Protective Coatings
Benzotriazole inhibitors for tarnish prevention
Acrylic lacquers with UV stabilizers
Conformal coatings for electronics
 

6.Selection Criteria by Application

Automotive Components
Aluminum: Anodize or powder coat
Zinc: Zinc-nickel plating
Copper: Nickel plating + sealant

Electronics Applications
Aluminum: Conductive anodize
Copper: Selective gold plating
Tin: Matte tin with reflow

Marine Environments
Aluminum: Hardcoat anodize
Zinc: Thick nickel-chrome
Copper: Clear lacquer over patina

4. Tin Alloy Surface Options

Plating Processes
Bright tin electroplate (matte preferred for whisker control)
Tin-lead alloys (where permitted)
Immersion tin for PCB applications

Conversion Coatings
Chromate conversion coatings
Phosphate treatments
Fluorozirconate processes

Specialty Treatments
Hot oil dipping for lubricity
Dry film lubricants (graphite, MOS2)
Laser texturing for oil retention

7.Process Considerations

Pretreatment Requirements
Acid cleaning for oxides
Alkaline soak cleaning
Mechanical abrasion methods

Environmental Factors
Wastewater treatment needs
Air emission controls
Hazardous material handling

Cost Factors
Capital equipment requirements
Chemical consumption rates
Labor intensity
The optimal surface treatment depends on alloy composition, part geometry, performance requirements, and cost targets. Modern finishing technologies now offer solutions ranging from basic corrosion protection to sophisticated multifunctional surfaces. Continued innovation in coating technologies promises even greater capabilities for die-cast components across all industries.
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Anodized
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Polishing
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Electroplating

What Our Customers Say​​​​​​​

Andrew

The precision and quality of your machined parts are outstanding! They fit perfectly into our assembly with zero issues. Will definitely order again!
2024.10.3

Peter

Excellent work! The parts were delivered on time and met all our specifications. Your attention to detail is impressive. Highly recommended!
 
2024.10.3

Gowthaman

We're very satisfied with the machining services provided. The finish and tolerances are exactly as required. Great job and smooth communication throughout!
2024.10.3

Romen

Consistently high-quality machining services. This is our third order, and as always, no complaints. Keep up the great work!
 
2024.10.3

Customized Die Casting Solutions - let your ideas be perfectly formed

Dear Sir/Madam, 
We know that there are many factors to consider when looking for an ideal die casting partner - precision, reliability and professional experience are indispensable. Nice to meet you!
At Zhongyi Precision, we not only produce parts, but also the caster of your product dreams.
Whether you are developing:
Key automotive parts / Precision aerospace components / Consumer electronics housing / Or innovative industrial parts
We are willing to use 20 years of die casting experience to provide you with a one-stop solution from design optimization to mass production.
Why choose to communicate with us?
Free design consultation: Our engineers can evaluate material selection and structural optimization suggestions for you
Transparent quotation: Provide 3D drawings or samples and get a detailed quotation within 48 hours
Flexible service: Support various needs from 50 samples to million-level mass production
Start your project now!
We are a high-precision, high-efficiency custom processing service vendor, focusing on providing high-quality customized parts processing solutions.

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Phone: +86-19129932526
Tel: +86-13480679400
WhatsApp: +8619129932526
Address: No. 7, Tianyang 6th Road, Dongfang Community, Songgang Street, Bao'an District, Shenzhen, Guangdong, China(518100)
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