Slush Casting is a traditional method of permanent mold casting process, where the molten metal is not allowed to completely solidify in the mold. When the desired thickness in obtained, the remaining molten metal in poured out.

In a cold chamber die casting machine Melting pot is separate from the machine
In Cold-Chamber Die Casting. Cold-chamber die casting is ideal for metals such as aluminum which have a high melting point. During this process, metal is liquefied in a furnace at extremely high temperatures and then ladled into a cold chamber to be injected into the die.

Cast iron and steel pipes are produced by True centrifugal casting.
True Centrifugal Casting is t he manufacturing process of centrifugal casting is a metal casting technique, that uses the forces generated by centripetal acceleration to distribute the molten material in the mold.