What is the differences between cold chamber die casting and hot chamber die casting?
Hot chamber equipment handles low melt point alloys. The maximum temperature of the alloys that can be safely die-cast in the hot chamber machine is around 450°C, including zinc, magnesium, etc. In contrast, cold chamber equipment deals with high melting point alloys .It usually die casts metal alloys at melting point 600°C or above, including aluminum, copper, brass and other alloys. Due to this, die casting mold for hot chamber machine has longer using life than it for cold chamber machine.
Another difference between hot chamber die cast and cold chamber die casting is the production lead time. The hot chamber equipment has a built-in furnace to melt the metal. Thus, the metal is delivered directly through the gooseneck to the mold cavity.In a cold chamber die casting machine,its furnace is externally located.Molten metal must be fed into the machine by ladles. As a result ,hot chamber die casting efficiency is faster than cold chamber die casting
While as to high melting point alloy like aluminum ,we must use cold chamber die casting method. And zinc alloys always adopt hot chamber die casting.
