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What is cold chamber aluminum die casting?

28 Jul 2017 - cold chamber,aluminum die casting,die casting

Cold chamber process is operated through molten aluminum alloy material being added into the die shot cell from an independent origin. Since molten aluminum is brought in from an external provider, the cold box casting machine has the capabilities to operate with a lower temperature process.


In the cold chambe process, the molten or liquified metal material must be added for each die shot or production cycle. By requiring molten metal on a regular cycle, this aspect can potentially affect the production rate efficiency for high volume projects.

Also, this cold chamber process requires the use of increased pressure. The high pressure at which the liquid material is pushed into and expands in the die cavity, significantly rank higher than the pressure that is required to operate in hot chamber. Pressures of 3,000 psi to 50,000 psi are commonly used during the manufacturing process to fill the mold cavities during the cold chamber process.

Die casting parts that are manufactured through the cold chamber process have advantages that can include: very detailed design, thinner part walls and enhanced mechanical properties. Aluminum Die Castings has a large variety of cold box machines. The video below shows our equipment producing some components for the Auto Industry.


Aluminum is liquefied through a furnace
Molten aluminum is then ladled into the die castingcold chamber
Plunger forces the aluminum into the cavity under high or low pressure
The die opens and the plunger moves forward
Ejector pins force the aluminum die casting part out of the ejector die, causing the plunger to retract
This technique is often used with metals that alloy quickly with iron at high temperatures
Since these materials would regularly pose problems when melted in a (part-iron) casting machine
The cold chamber process is most ideal for metal alloys that have higher melting points

Many of our aluminum die casting product are made from A380: 

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