Our Cold Chamber Die Casting Services
At Yigu Technology, our Cold Chamber Die Casting solutions empower industries to create high-strength, low-porosity components with unrivaled precision. Backed by decades of technical expertise, state-of-the-art equipment, and rigorous quality control, we transform diverse materials—from aluminum to copper alloys—into parts that excel in automotive, aerospace, and medical applications. Whether you need rapid production cycles, tight dimensional tolerances, or custom surface finishes, we deliver cost-effective, reliable results that turn your design vision into reality.
What Is Cold Chamber Die Casting?
Cold Chamber Die Casting is a specialized die casting type designed for high-melting-point metals, relying on a separate molten metal holding furnace rather than an integrated pool. Its core basic principles center on transferring molten metal into a cooled injection chamber (the “cold chamber”) before forcing it into a mold—making it ideal for metals that would damage heated components in hot chamber machines.
A clear process overview highlights its uniqueness: Molten metal (heated to 600–1,100°C) is manually or automatically poured into the cold chamber. A hydraulic piston then injects the metal into a closed mold at high pressure (50–150 MPa), where it solidifies into the desired shape. Table 1 compares it to hot chamber die casting to highlight key differences:
| Die Casting Type | Metal Compatibility | Melting Point Range | Cycle Time | Ideal Use Case |
| Cold Chamber Die Casting | Aluminum, Copper, Magnesium (high-melt) | 600–1,085°C | 20–60 seconds | High-strength parts (e.g., engine components) |
| Hot Chamber Die Casting | Zinc, Low-melt Magnesium | 380–650°C | 10–30 seconds | Small, high-volume parts (e.g., electronics) |
Yigu Technology’s Cold Chamber Die Casting Capabilities
Our capabilities are built to handle the most demanding cold chamber projects, combining advanced infrastructure with deep manufacturing know-how.
Key Capabilities Breakdown
| Capability Area | Details |
| Production Capacity | 50,000–400,000 units/month (scalable for aluminum/copper components) |
| Technical Expertise | Specialized in high-pressure mold design, alloy optimization, and defect reduction |
| Equipment | 15+ cold chamber machines (200–1,200 tons clamping force) with automated metal transfer |
| Quality Control | ISO 9001 & IATF 16949 certified; 3-stage inspection (pre-production, in-process, post-production) |
The Cold Chamber Die Casting Process
The Cold Chamber Process follows a structured process flow optimized for precision and consistency, with each step tailored to handle high-melting-point metals.
- Metal Preparation: Molten metal (e.g., aluminum alloy) is held in a separate furnace at a controlled temperature (650–750°C for aluminum).
- Injection: A ladle transfers the molten metal into the cold chamber. A piston then pushes the metal into the mold cavity at high speed (2–8 m/s), ensuring full filling.
- Cooling: The metal solidifies in the mold (15–40 seconds, depending on part size) while pressure is maintained to reduce porosity.
- Ejection: The mold opens, and ejector pins push the finished part out. Excess material (flash) is removed via trimming for a clean finish.
On average, the total cycle time for a medium-sized aluminum part (e.g., an automotive bracket) ranges from 30–45 seconds—balancing speed with the precision needed for high-strength applications.
Materials Used in Cold Chamber Die Casting
Choosing the right materials is critical for cold chamber success, as the process is optimized for metals that require higher melting temperatures. We offer expert material selection support to match your project’s needs.
Material Properties & Applications
| Material Type | Common Alloys | Key Properties | Typical Applications |
| Aluminum Alloys | A356, A380, 6061 | High strength (250–400 MPa), lightweight (2.7 g/cm³), corrosion-resistant | Automotive engine parts, aerospace components |
| Copper Alloys | Brass C36000, Bronze C93200 | High thermal conductivity, wear-resistant, high melting point (1,085°C) | Industrial valves, electrical connectors |
| Magnesium Alloys | AZ91D, AM60B (high-melt grades) | Ultra-light (1.8 g/cm³), good strength-to-weight ratio | High-performance automotive parts, drone components |
| Zinc Alloys | Zamak 3 (high-purity grades) | Ductile, low cost, used for specialized high-strength zinc parts | Heavy-duty hardware, industrial fasteners |
Surface Treatment for Cold Chamber Die Cast Components
Surface Treatment enhances the durability, aesthetics, and functionality of cold chamber parts, addressing industry-specific challenges like corrosion and wear.
| Treatment Method | Purpose | Advantages | Ideal For |
| Anodizing | Creates a hard, protective oxide layer | Scratch-resistant, customizable colors (for aluminum) | Automotive exterior parts, aerospace components |
| Powder Coating | Applies a durable polymer finish | Chip-resistant, UV-stable, wide color range | Outdoor equipment, industrial machinery |
| Plating | Adds a metal layer (e.g., nickel, chrome) | Improves conductivity, decorative appeal | Electrical components, medical devices |
| Painting | Enhances aesthetics and basic protection | Fast application, low cost | Consumer electronics, non-critical structural parts |
| Texturing | Creates a non-slip or matte surface | Hides minor defects, improves grip | Tool handles, automotive interior parts |
Tolerances in Cold Chamber Die Casting
Tolerances and dimensional accuracy are hallmarks of our cold chamber process, with tight tolerances achievable through precision mold design and advanced measurement tools.
Typical Tolerance Ranges
| Part Feature | Standard Tolerance | Tight Tolerance (Custom) | Industry Standard |
| Part Dimensions (≤100mm) | ±0.1mm | ±0.05mm | ISO 8062:2018 Class CT6 |
| Hole Positioning | ±0.15mm | ±0.08mm | DIN EN 13920 |
| Flatness | 0.1mm/m | 0.06mm/m | IATF 16949 |
These tolerances are verified using coordinate measuring machines (CMMs) and laser scanners, ensuring every part meets your exact specifications.
Advantages of Cold Chamber Die Casting
The advantages of Cold Chamber Die Casting make it the go-to choice for high-performance, high-melting-point metal components.
- High Precision: Tight tolerances and consistent part geometry ensure seamless integration into assemblies—critical for aerospace and medical applications.
- High Strength: Parts have 20–30% higher tensile strength than hot chamber alternatives, thanks to reduced porosity and optimized solidification.
- Low Porosity: Pressure during cooling minimizes air bubbles, making parts suitable for pressure-containing applications (e.g., hydraulic valves).
- Cost-Effective: Automated production and minimal waste lower per-unit costs for medium-to-high volume runs (5,000+ units).
Material Versatility: Works with a wide range of high-melting-point metals, giving you flexibility to choose the best material for your project.
Industry Applications of Cold Chamber Die Casting
Cold Chamber Die Casting serves diverse applications across industries that demand strength, precision, and reliability.
| Industry | Key Applications | Material of Choice | Why Cold Chamber Die Casting? |
| Automotive | Engine blocks, transmission housings, suspension components | Aluminum Alloys | High strength, lightweight |
| Aerospace | Structural brackets, fuel system parts, landing gear components | Aluminum/Copper Alloys | Precision, corrosion resistance |
| Electronics | Heat sinks, power supply enclosures, 5G base station parts | Aluminum/Magnesium Alloys | Thermal conductivity, dimensional stability |
| Telecommunications | Antenna housings, router chassis, fiber optic components | Aluminum Alloys | Lightweight, EMI shielding |
| Medical Devices | Surgical instrument housings, diagnostic equipment frames | Aluminum/Copper Alloys | Biocompatibility, precision |
Manufacturing Techniques for Cold Chamber Die Casting
Our manufacturing techniques combine innovation and proven practices to deliver consistent, high-quality cold chamber parts.
- Tooling & Molding: We use H13 hot-work steel for molds, engineered to withstand high temperatures and repeated use (100,000+ cycles). Mold cooling channels are optimized to reduce cycle time and prevent warping.
- Automation: Robotic arms handle metal transfer, part ejection, and trimming, reducing human error and increasing production speed by 25–35%.
- Secondary Operations: We offer post-casting services like CNC machining, drilling, and threading to achieve final tolerances and add complex features.
Quality Control: Real-time sensors monitor temperature, pressure, and injection speed, while post-production measurement ensures compliance with specs.
Case Studies: Yigu Technology’s Cold Chamber Die Casting Success Stories
Our case studies demonstrate how we solve complex challenges for clients using cold chamber die casting.
Case Study 1: Automotive Engine Block
- Challenge: A leading automaker needed 50,000 aluminum engine blocks monthly, with low porosity (<1%) and tight tolerances (±0.08mm) for critical mounting points.
- Solution: Used A356 aluminum alloy in our cold chamber process, with custom mold design and automated pressure monitoring.
- Result: Achieved 99.7% defect-free rate, met porosity requirements, and reduced production time by 15% compared to the client’s previous supplier.
Case Study 2: Aerospace Structural Bracket
- Challenge: An aerospace client required lightweight, high-strength brackets with corrosion resistance and compliance with AS9100 standards.
- Solution: Utilized 6061 aluminum alloy and added anodizing surface treatment. Implemented rigorous quality checks, including X-ray inspection for porosity.
Result: Brackets met all AS9100 requirements, weighed 20% less than steel alternatives, and passed 5,000+ hours of corrosion testing.
Why Choose Yigu Technology for Cold Chamber Die Casting?
When you partner with us for Cold Chamber Die Casting, you gain a trusted ally dedicated to your success. Here’s why clients choose us:
- Expertise: Our team has 15+ years of experience in cold chamber manufacturing, with specialized knowledge in high-melting-point metals.
- Quality: We adhere to the strictest industry standards (ISO 9001, IATF 16949, AS9100), ensuring every part meets or exceeds your expectations.
- Service: A dedicated account manager provides end-to-end support, from design optimization to on-time delivery, with 24/7 responsiveness.
- Innovation: We invest in R&D to improve processes—like AI-powered mold maintenance alerts—that reduce downtime and lower costs.
Value: We balance quality and cost, offering competitive pricing without compromising on precision or reliability.