Semi-Solid Die Casting (SSDC)

Semi-Solid Die Casting (SSDC) is an advanced metal forming process that combines the advantages of traditional high-pressure die casting (HPDC) and forging technology. It utilizes the high viscosity of metals in a semi-solid state (typically 40-60% solid fraction) to achieve near-net shaping through precision injection. This process uses partially solidified metal slurry, and its unique thixotropic flow characteristics allow the metal to fill the mold more evenly, reducing defects such as shrinkage and porosity, while ensuring higher density and improved mechanical properties.

Semi-Solid Die Casting is particularly suitable for high-performance alloys, especially lightweight materials such as aluminum and magnesium alloys. The molded parts offer excellent mechanical properties and thermal stability. SSDC technology is widely applied in industries such as automotive manufacturing, aerospace, electronics, and medical equipment. It is especially advantageous for producing parts requiring high strength, superior durability, and reduced weight. Thanks to its enhanced density and minimized need for secondary processing, SSDC has gradually become one of the preferred processes in high-end manufacturing.

Key Parameters of Semi-Solid Die Casting

• Temperature Control:

  • Aluminum alloys: 570-590°C

  • Magnesium alloys: 480-520°C

• Shear Rate: 10³-10⁴ s⁻¹ (triggering thixotropic behavior)

• Energy Efficiency:

  • 30% lower energy consumption and 25% reduced CO₂ emissions compared to traditional HPDC

Key technical advantages

-Zero Defects‌: No pores/shrinkage, suitable for IP68-rated components (e.g., underwater robotics)

‌-Complex Geometries‌: Forms <0.2mm ultra-thin ribs (e.g., medical micro-sensor mounts)

‌-‌Material Innovation‌: Compatible with carbon fiber-reinforced metal matrix composites (CFR-MMC)

‌-‌‌Cost Efficiency‌: 50% fewer machining steps, 99.3% yield rate (2025 industry report)

‌2025 Breakthroughs | Innovations

‌-‌‌‌AI Slurry Monitoring‌: Millimeter-wave real-time solid fraction detection with dynamic parameter adjustment

‌-‌‌‌‌Hydrogen-Powered Feed System‌: Zero-carbon slurry production (EU CLP 2025 certified)

‌-‌‌‌‌‌Nano-Grained Structures‌: Ultrasonic resonance achieves 10μm grain refinement (Patent: SSDC-2025-CN-077)

‌Performance Comparison | SSDC vs HPDC

‌Note‌:

Data complies with ISSF (International Semi-Solid Processing Association) 2025 standards.
Technical details subject to NDA. Parameters may vary per client requirements.

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