Die casting is a preferred manufacturing process for producing high-volume, relatively complex metal parts. Because of its versatility, reliability and high precision, die casting process has been widely used.
01
Hot Chamber Die Casting
One popular die casting technique that works well for low melting point alloys like lead, zinc, and magnesium is called gooseneck casting or hot chamber die casting. This method involves melting the metal using a heating element inside the system while it is in a holding pot. Through a nozzle, the gooseneck structure directs molten metal into the injection cavity of the mold while creating a holding chamber inside the pot. The metal is forced from the holding pot into the gooseneck tube and then into the mold cavity by the plunger that is positioned above the chamber. After cooling and solidifying in the mold, the mold opens and the casting is ejected by the ejector pin. Hot chamber die casting has the advantages of fast cycle and high production efficiency.
02
Cold Chamber Die Casting
When using the cold chamber die casting method, the metal is melted in a different furnace and either manually or automatically poured into the shot chamber while the die casting chamber remains at ambient temperature. The cold chamber die casting method lacks a heating element, in contrast to hot chamber die casting. The metal is forced into the mold by the plunger, which then applies intense pressure to hold the molten metal there until it hardens. High melting point materials, like aluminum, work well for cold chamber die casting because they can produce castings with greater strength and endurance.