How does the high pressure die casting process work?

In a high pressure die casting process, molten metal or metal alloy is injected at high speed and high pressure into the mould.

Horizontal high pressure die casting machines ensure the die closes completely. These are rated by how much closing force they can apply and, for Italpresse Gauss machines, that can range from 550 to 5700 tonnes.

Depending on the metal being used, the injection unit that fills the mould can either be hot chamber or cold chamber. In hot chamber die casting, the metal is held within the diecasting machine itself, then drawn into the chamber and forced into the mould by the injection piston. These parts of the machine are in constant contact with the molten metal.

In cold chamber process the metal is first melted in a separate furnace and transferred to a holding furnace, then poured into a shot sleeve and injected into the mould. Italpresse Gauss offers a wide range of cold chamber high pressure die casting machines.

Advantages of the high pressure die casting process

High pressure die casting technology can produce very large light alloy parts, in high volumes and great speeds.

These machines deliver light alloy parts with high precision, superior surface finish, excellent uniformity and optimum mechanical properties.

The high pressure die casting process can also produce components with thin walls and "co-cast” parts with different types of inserts, such as screws and liners, that then become an integral part of the product itself.


Cold chamber high pressure die casting technology is ideal for production of a diverse range of aluminium and magnesium automotive castings such as engine blocks, gearbox casings, oil sumps, engine mounts and structural parts like cross-car beams.

It is widely used in other sectors to manufacture components in applications that range from the simplest – a lighting component – to the most demanding, such as aerospace engine parts.

Discover our high pressure die casting solutions here:

  • TF Two Platen Toggle Free Die Casting Machines:
    The TF series of toggle free die casting machines includes a wide range of models with closing forces from 1000 to 5700 tonnes. Our TF toggle free die casting machines are reliable, rigid and flexible.
  • IP & IPr Three Platen Die Casting Machines with Toggle:
    The IP and IPr three platen die casting machines with toggle are available with closing forces ranging from 200 to 4400 tonnes. Our IP and IPr die casting machines are solid, reliable and ensure high productivity cycle times.
  • Turnkey Fully Automated Cells:
    Flexible, fully automated work cells for light alloy casting production. We engineer automated work cells for three die casting processes: high pressure die casting, gravity die casting and low pressure die casting.

NSD VINA CO., LTD - Industrial Solutions
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Tel: 024-6688-2448
Email: info@nsdvn.com