Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Aluminum die casting is a manufacturing process where molten aluminum is injected under high pressure into a steel mold (die) to create precise, complex metal parts. 

1.Here’s how it works:

a.Die Preparation: A two-part steel mold, designed to the exact shape of the desired part, is clamped together. The die is often coated with a lubricant to aid part release and protect the mold.

b.Melting Aluminum: Aluminum (often alloyed with elements like silicon or magnesium for strength and fluidity) is melted in a furnace, typically at temperatures between 650-700°C (1200-1300°F).

c.Injection: The molten aluminum is forced into the die cavity at high pressure (typically 10,000–30,000 psi) using a hydraulic or mechanical piston. This ensures the metal fills intricate details of the mold.

d.Cooling and Solidification: The aluminum cools and solidifies rapidly (within seconds to minutes) inside the die, taking the shape of the mold. Cooling systems in the die help control the process.

e.Ejection: Once solidified, the die opens, and the cast part is ejected using pins. The part may have slight imperfections like flash (excess material) that’s later trimmed.

f.Finishing: The part may undergo secondary processes like machining, polishing, or surface treatments (e.g., anodizing, painting) for enhanced properties or aesthetics.

2.Types of Die Casting:

a.High-Pressure Die Casting: Common for aluminum, producing high-volume, precise parts.

b.Low-Pressure Die Casting: Uses lower pressure for larger, less complex parts.

c.Vacuum Die Casting: Removes air from the mold to reduce porosity, improving quality.

3.Advantages:High precision and repeatability.

Smooth surface finishes.

Suitable for complex shapes and thin walls.

Fast production for large volumes.