Basics of Cold Chamber Pressure Die Casting

Basics of Cold Chamber Pressure Die Casting

Die casting is a metal casting method in which molten nonferrous alloys are poured into dies at high pressure and speed to produce molded items quickly. Aluminum, magnesium, and zinc alloys are the most common materials used in die casting.

Types of die-casting:

All die-casting procedures have the same goal in mind: to pour molten metal into a mold. Depending on the type of molten metal, component geometry, and part size, different die casting processes can give better results than other methods. Die casting processes are divided into two categories: hot-chamber pressure die-casting and cold-chamber pressure die-casting. Other variants on these two types of die casting include: Low-pressure die casting, precision die casting in a vacuum, and squeeze die casting A semi-solid core is used in die casting.

About cold chamber pressure die casting:

Metals with high melting points and corrosive characteristics are suited for cold chamber die casting. Cold chamber pressure die casting, as opposed to hot chamber die casting, eliminates the corrosion issue by separating the melting pot from the injector components. The procedure starts with molten metal being poured into the shot chamber through a pouring hole from the furnace.

The plunger then drives metal into the die at pressures ranging from 2,000 to 20,000 psi through the shot chamber. In cold-chamber die casting, metal is heated to a molten condition in a separate furnace before being cast. After that, the molten metal is transferred to the casting machine and fed into the machine’s chamber.

The molten metal is forced into the cavity of the mound by a pressured plunger. This distinct procedure distinguishes cold chamber die casting from hot chamber die casting.

cold chamber pressure die casting


When compared to other types of manufacturing processes, cold chamber die casting is an efficient and cost-effective method for producing a wide range of forms and components. The cold chamber die casting process may produce parts with long service life and can be customized to match the aesthetics of the surrounding component. The following are some of the direct advantages that the cold chamber die casting technique can provide:

Cold chamber die-cast pieces are stronger and lighter than plastic injection molded ones of the same dimensions. Castings with thin walls are stronger and lighter than those made using other processes. Furthermore, because die castings are not made up of distinct components that are welded or connected together, the alloy, rather than the joining, provides the strength.

Final words:

 I hope you learned more about cold chamber pressure die casting after reading this post.