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Precision Aluminum Alloy Die Casting Services

Are you considering a cost-effective aluminum die casting project? Working with Junying Metal Manufacturing Co., Ltd – a specialty aluminum die casting supplier – is the right choice.

With over 15 years of experience in high-quality yet low-cost metal casting and mold making, Junying is capable of bringing your aluminum die casting design to life while maintaining competitive pricing, innovative design, and quality assurance. Our advanced manufacturing equipment ensures the production of high-quality aluminum and zinc die casting parts with short delivery times.

  • ISO 9001:2015 Certified Die Casting Manufacturer
  • High Precision & Tight Tolerances
  • Fast Turnaround & Competitive Pricing
  • Custom OEM & ODM Die Casting Solutions
Precision Aluminum Die Casting

Why Choose Junying Aluminum Die Casting Services?

  • ISO Certification: We are an ISO 9001:2015 certified aluminum die casting factory, specializing in mold making and precision alloy die casting.
  • Strict Quality Control: Advanced inspection techniques ensure every aluminum alloy part meets exact specifications.
  • Wide Industry Applications:Our custom aluminum casting solutions serve industries including automotive, electronics, defense, marine, lighting, furniture, and medical equipment.
  • State-of-the-Art Facilities:Our modern aluminum casting factory is equipped with high-tech die casting machinery and precision measuring instruments to ensure high efficiency and accuracy.
  • OEM & Custom Solutions: Need to buy custom aluminum die casting parts? We provide OEM aluminum die casting services, capable of producing complex aluminum castings with specific configurations and finishes.
  • High-Productivity & Cost-Effective Solutions:Thanks to our reliable raw material supply chain and skilled workforce, we manufacture aluminum die casting parts and components with high efficiency and cost savings, ensuring lower prices compared to other manufacturers.

Capabilities of Junying Aluminum Die Casting Services

As a leading aluminum casting company, Junying constantly improves its manufacturing processes. Our plant is equipped with top-line machinery and advanced technologies to ensure superior quality and efficiency.

Products aluminum cable clamps, cable clips, OEM aluminum die casting parts
Materials aluminum alloys 360.0, 380.0, ADC2, ENAC-44300, etc.
Technologies hot chamber die casting, high pressure die casting
Finishes Sand Blasting, Polishing, Spray painting, Pad Printing, Colour Electrophoresis, Mirror Finishing, Silk-Screen Printing, Oxidation
Sizes up to 30cm x 30cm
Machine up to 300 tons
Industries Served Electronics, Defence, Communications, Medical, Marine, Lighting, Furniture, High Security Locks and General Engineering

What is Aluminum Die Casting?

Aluminum die casting is a precision metal casting process where molten aluminum alloy is forced under high pressure into a steel mold cavity. The die casting mold is made from hardened steel dies, which are machined into the desired shape.

This high-precision die casting process allows for the mass production of complex aluminum components with high dimensional accuracy, making it ideal for industries requiring durable and lightweight metal parts.

Advantages of Aluminum Die Casting:

  • High Strength & Lightweight -Aluminum castings offer excellent strength-to-weight ratio, making them suitable for automotive and aerospace applications.

  • Superior Surface Finish -Aluminum die cast parts have smooth surfaces, reducing the need for additional post-processing.

  • Excellent Corrosion Resistance -Aluminum alloys are naturally oxidation-resistant, ensuring long-lasting durability.

  • High Production Efficiency -Automated die casting machines allow fast production cycles, reducing manufacturing costs.

How Does Aluminum Die Casting Work?

The aluminum die casting process involves several key steps:

  1. Mold Preparation & Design:Engineers design a precision aluminum die casting mold, ensuring it meets the required shape, dimensions, and tolerances. The mold is made of hardened steel and consists of two halves: a movable half and a stationary half.Molten Aluminum Injection – High-pressure die casting machines inject molten aluminum alloy into the mold cavity.
  2. Melting & Injection:Aluminum alloy is melted at high temperatures (typically 660°C / 1220°F). The molten aluminum is injected into the mold cavity under high pressure (1500-2500 psi) to ensure fine details and high precision.
  3. Solidification & Cooling:The molten aluminum quickly solidifies within seconds, taking the exact shape of the mold. Cooling time depends on part thickness and complexity.
  4. Ejection & Trimming:The solidified aluminum casting is ejected from the mold, and excess materials (flash, sprues, runners) are removed. Trimming, deburring, and CNC machining may be applied for final precision finishing.
  5. Surface Treatment & Quality Inspection:Additional surface finishes such as powder coating, anodizing, polishing, or sandblasting are applied for enhanced durability and aesthetics. Final quality control inspections ensure that each aluminum die casting part meets industry standards and customer specifications.This efficient and repeatable process makes aluminum die casting an excellent choice for high-volume production of precision-engineered metal parts.
Precision Aluminum Die Casting

Aluminum Alloys Used in Die Casting

Choosing the right aluminum alloy is important for achieving optimal strength, weight, and corrosion resistance. At Junying, we work with a wide range of aluminum alloys, including:

  • A360.0: Excellent corrosion resistance and high-pressure tightness.
  • A380.0: The most commonly used alloy for automotive and industrial applications.
  • ADC12: Superior wear resistance and machinability.
  • EN AC-44300: High thermal conductivity and structural integrity.

Each alloy is carefully selected based on application requirements, ensuring maximum performance and durability.

Applications of Aluminum Die Casting

Our custom aluminum die casting components are widely used across industries, including:

  • Automotive Industry: Engine blocks, transmission housings, brake calipers, cylinder heads.
  • Electronics & Telecommunications: Heat sinks, enclosures, connectors, LED housings.
  • Defense & Aerospace: Structural components, lightweight aluminum casings, drone parts.
  • Lighting & LED Fixtures: Durable aluminum housings for outdoor and industrial lighting.
  • Medical Equipment: Precision aluminum parts for diagnostic devices and surgical tools.
  • Industrial Machinery & Marine Equipment: Corrosion-resistant aluminum components for heavy-duty applications.

Customer Case Studies & Success Stories

Case Study 1: High-Precision Aluminum Lock Parts for Security Industry

A leading security company required custom aluminum die-cast lock parts with tight tolerances and high durability.

  • Solution: Used ADC2 aluminum alloy, precision CNC machining, and mirror finishing.
  • Result: Successfully produced 10,000+ units with zero defects, reducing costs by 15%.

Case Study 2: Lightweight & Durable LED Lamp Housings for Automotive Industry

A European automotive lighting company needed lightweight yet strong aluminum die-cast housings.

  • Solution: Utilized high-pressure die casting and color electrophoresis finishing.
  • Result: Improved product longevity and corrosion resistance, leading to a 30% increase in durability.

FAQ – Frequently Asked Questions

What are the advantages of aluminum die casting?

High strength-to-weight ratio

Excellent thermal conductivity

Corrosion resistance

Complex shapes with tight tolerances

How do I choose the right aluminum alloy for my project?

The choice of aluminum alloy depends on:

✔ Mechanical properties required (strength, hardness, wear resistance)

✔ Corrosion resistance needs

✔ Weight considerations

✔ Machining and finishing requirements

Our engineering team can help select the best alloy for your specific application.

What surface finishes are available for aluminum die casting parts?

Polishing – Smooth and shiny finish

Sand Blasting – Uniform matte texture

Oxidation – Increased corrosion resistance

Color Electrophoresis – Enhanced aesthetic appeal

What industries benefit from aluminum die casting?

Automotive, Electronics, Medical, Marine, Security, and Lighting Industries

How much does aluminum die casting cost?

The cost of aluminum die casting depends on:

✔ Part complexity and size

✔ Material selection (aluminum alloy type)

✔ Production volume (higher quantities reduce per-unit cost)

✔ Surface finishing and secondary machining requirements

Junying is committed to providing low price aluminum casting parts to global customers while maintaining good quality. For an accurate quote, please contact us with your specific project details.

What is the difference between aluminum die casting and zinc die casting?

While both are high-pressure die casting processes, they differ in:

Material Properties – Aluminum is lighter, while zinc is stronger and more ductile.

Melting Point – Aluminum has a higher melting point (660°C vs. 419°C for zinc).

Durability – Zinc castings have longer tool life due to lower operating temperatures.

Applications – Aluminum is used in automotive and aerospace, while zinc is common in consumer goods and electronics.

What is the minimum and maximum size of aluminum die casting parts?

Aluminum die casting can produce components ranging from a few grams to several kilograms. Typical sizes include:
Small precision parts – 1cm to 10cm (e.g., electronic enclosures)
Medium-sized components – 10cm to 50cm (e.g., automotive housing)
Larger castings – Up to 100cm, but large parts may require multi-cavity molds or secondary assembly.

How long does an aluminum die casting mold last?

A high-quality die casting mold typically lasts for 50,000 to 500,000 shots, depending on:
Mold material (hardened tool steel increases lifespan)
Operating temperature and pressure
Maintenance and cooling system design

Proper lubrication and maintenance can significantly extend mold life.

What are the common defects in aluminum die casting? How are they prevented?

Some common die casting defects include:
❌ Porosity – Caused by trapped air or gas; prevented by vacuum die casting and optimized gating.
❌ Cold Shut – Occurs when molten metal does not fully fuse; avoided by proper temperature control.
❌ Shrinkage – Due to uneven cooling; prevented by well-designed mold flow and cooling channels.
❌ Flash – Excess metal at mold joints; controlled by precise clamping force.

What surface finishes are available for aluminum die casting?

Common surface treatments for aluminum die casting include:
Anodizing – Improves corrosion resistance and adds color options.
Powder Coating – Provides a durable and aesthetic finish.
Electrophoretic Coating (E-coating) – Enhances wear resistance.
Polishing & Sandblasting – Creates a smooth surface.
Plating (Nickel, Chrome, Zinc Coating) – Adds extra protection and conductivity.

Can aluminum die cast parts be welded or machined?

Yes, aluminum die castings can be machined and welded, but with certain limitations:
Machining – CNC machining is commonly used for precision finishing.
Welding – Aluminum die cast parts have porosity, which may affect weld quality. Alternative joining techniques like brazing or mechanical fastening are often preferred.

What is the difference between high-pressure and low-pressure aluminum die casting?

High-Pressure Die Casting (HPDC):
✔ Best for thin-walled, high-volume production
✔ Produces smooth, precise parts with tight tolerances
✔ Used for automotive, electronics, and aerospace components

Low-Pressure Die Casting (LPDC):
✔ Better for thicker-walled, larger components
✔ Produces stronger, less porous parts
✔ Used for wheels, structural components, and industrial parts

How does aluminum die casting compare to CNC machining?

Die casting is ideal for mass production, while CNC machining is better for low-volume, high-precision components.

What is the environmental impact of aluminum die casting?

Aluminum is 100% recyclable, making die casting an eco-friendly manufacturing process.
Energy-efficient processes and automated die casting machines help reduce waste and emissions.
Many manufacturers use recycled aluminum alloys to minimize environmental footprint.

How can I get a free quote for my aluminum die casting project?

Looking for a trusted aluminum die casting manufacturer? We offer OEM solutions, high-quality materials, and precision engineering for your custom aluminum casting projects. 

Simply contact us via [email protected] or call +86 769 8289 0830.