Hot chamber die casting and Cold chamber die casting are two kinds of basic die casting methods.
In hot chamber die casting, also known as gooseneck or direct chamber die casting, the metal is melted in a furnace and then transferred to the die casting machine via a gooseneck tube. The gooseneck is immersed in the molten metal, which eliminates the need for a separate melting furnace or holding pot. This method is primarily used for alloys with low melting points, such as zinc, tin, and lead.
In cold chamber die casting, also known as plunger or indirect chamber die casting, the molten metal is poured into a separate chamber or shot sleeve outside the die casting machine. A plunger then forces the metal into the die cavity under high pressure. This method is typically used for alloys with high melting points, such as aluminum, magnesium, and copper.
