There are the different types of aluminum die casting：

High-Pressure Die Casting:

l This is the most common type, utilizing extremely high pressure (up to 20,000 psi) to inject molten aluminum into the die cavity.

l This rapid solidification results in fine-grained structures and high dimensional accuracy.  

l Suitable for producing intricate parts with thin walls.  

Low-Pressure Die Casting:

l Gravity is used to fill the die cavity with molten aluminum.

l Lower pressures result in less internal stress and a more uniform grain structure.

l Typically used for larger and thicker castings.

Semi-Solid Die Casting:

l Involves injecting a semi-solid slurry of aluminum (a mixture of solid and liquid phases) into the die.

l This process offers improved mechanical properties and reduced porosity compared to traditional high-pressure die casting.