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what is aluminum die casting?

what is aluminum die casting?

Charley Ward |

(originally posted 1/2/22)

Aluminum die casting is a manufacturing process in which molten aluminum is poured or injected into a steel mold or die. The aluminum takes the shape of the cavity in the die, and once it has cooled and solidified, the die is opened and the casting is removed. The process is known for producing parts with good dimensional accuracy and surface finish, as well as good mechanical properties. It is often used to produce complex, high-volume parts for a wide range of industries, including automotive, aerospace, and electronics.

There are several steps involved in the aluminum die casting process:

  1. Design and construction of the die: The die is made up of two halves (called the "cavity" and the "core"), which are typically made of steel. The cavity is the space that the molten aluminum will be poured into, and it is shaped like the final casting. The core is used to create internal features in the casting, such as holes or channels.

  2. Melting and purifying the aluminum: The aluminum is melted in a furnace and then refined to remove impurities. The molten aluminum is then poured into a holding furnace to keep it at the proper temperature for casting.

  3. Injecting the aluminum into the die: The molten aluminum is injected into the die under high pressure, using a hydraulic or mechanical injection system.

  4. Cooling and solidification: As the aluminum cools and solidifies, it takes on the shape of the cavity in the die.

  5. Ejecting the casting: Once the aluminum has cooled and solidified, the die is opened and the casting is removed. The casting may then be trimmed, cleaned, and finished as needed.

Overall, aluminum die casting is a fast and efficient way to produce high-quality, complex parts in large quantities.