Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Die casting is a metal casting process where molten metal is forced under high pressure into a mold cavity to create precise, complex parts. Here’s a concise overview of how it’s done:

1.Mold Preparation: A two-part steel mold (die) is designed with the desired part’s shape. The mold is cleaned, lubricated, and sometimes preheated to ensure smooth casting and easy part release.

2.Melting Metal: Non-ferrous metals like aluminum, zinc, magnesium, or copper alloys are melted in a furnace at high temperatures (e.g., ~600-700°C for aluminum).

3.Injection: The molten metal is injected into the mold cavity under high pressure (typically 10-175 MPa) using a hydraulic or mechanical press. This ensures the metal fills all intricate details of the mold.

4.Cooling and Solidification: The molten metal cools and solidifies rapidly inside the mold, taking its shape. Cooling time depends on the part’s thickness and material.

5.Ejection: Once solidified, the mold opens, and the part is ejected using ejector pins. The mold is then prepared for the next cycle.

6.Trimming and Finishing: Excess material (flash) is trimmed, and the part may undergo post-processing like machining, polishing, or coating for improved aesthetics or functionality.

7.Types of Die Casting:

a.Hot Chamber: Used for low-melting-point metals (e.g., zinc). The injection system is submerged in molten metal, allowing faster cycles.

b.Cold Chamber: Used for high-melting-point metals (e.g., aluminum). Molten metal is ladled into the injection system, reducing machine wear.

8.Advantages: High precision, excellent surface finish, and suitability for mass production.