Things to Know About Cold Chamber Die Casting

Basically, die casting is characterized by putting a melted or almost liquified metal or object under a very high pressure then put into the chamber. It has been widely used in Southeast Asia and it has two technique types. The hot and cold chamber die casting.

Since many people are confused about the definition of cold chamber die casting and how it is different with the hot chamber technique in die casting, this article will be dedicated to defining the cold chamber focusing on its functions, definitions, superiority, and inferiority.

Cold Chamber Die Casting

Cold chamber die casting

Precision casting is the fastest and most reliable way to ensure excellent end results precision technology within refractory metals. Examples include aluminum, copper, etc.

Cold chamber die casting uses a pressured plunger to constrain the melted object in or around mould. It truly ensures the durability and strength that can be guaranteed in foundry facilities because it aids the production and strengthening of parts.

Over the years cold chamber die casting have been known for their strong and dense metal production and long-term use.

How cold chamber die casting function

During the cold chamber die casting procedure, the object or metal primarily needs to be piping hot to become molten while it is separated in the incinerator. After that, the melted metal or object is transferred to the cold machine to be fed up and casted.

Cold chamber dies casting has always been preferred for the objects or metals that have its own high melting flashpoint because it solves the corrosion or wearing away which is a common problem by separating or dividing the melt pot from the components of the injector.

cold chamber die casting function

How is it different from hot chamber die casting

The confusion must end now. Within the hot chamber die casting, the machine’s cylinder chamber is submerged in the molten and heated metal. With that, the immersion into metal allows a speedy mould injection process which leads to a much higher production success rate.

Cold chamber die casting, on the other hand, the metal is heated in a separated furnace to be molten before it is fed up in the cold casting chamber for the mould’s cast to be pressured.

Basically, the difference between the two processes is the fact that hot chamber die casting heats the metal directly inside it’s machine, while cold chamber die casting heats the metal in a separate furnace.

Superiority of cold chamber die casting

There is a superiority that cold chamber die casting has. Compared to hot chamber technique, cold chamber die casting is the machine itself. The machinery sustains it’s cool state which allows it to handle metals that have a high melting point.

The benefits or gain you can get from cold chamber die casting includes its increase in weight and strength. It has superior properties with smoother and thin falls when finished. Depending on the specified need in industrialization, both hot and cold chamber die casting are suitable for manufacturing.

Furthermore, cold chamber die casting requires maintenance costs that are much more affordable than the other.

Inferiority of cold chamber die casting

The inferiority of cold chamber die casting is the looooong, longer cycle time it needs to be done. It has a slower process than the hot chamber technique because it requires an additional process or step.

Cold chamber die casting also has a higher level of oxidation and contaminants than hot chamber die casting, thus the quality of the product is inevitably impacted.


Choosing between hot or cold chamber die casting is actually good, both have their advantages and disadvantages depending on the material you will use.