The invention provides equipment and a method for
casting a plurality of aluminum
alloy ingots with small diameters by using vertical direct chilling
casting (DC) and relates to the equipment and the method for
casting the aluminum
alloy ingots, which aim to solve the problems of low consistency of
metal temperatures, low
water cooling uniformity and high possibility of
ingot suspension or tension fracture and flow running in each crystallizer in the process of casting the aluminum
alloy ingots with the small diameters by the conventional technology for casting the plurality of aluminum alloy ingots with the small diameters by using the vertical DC. The method comprises the following steps of: communicating all
branch outlets on runners with a plurality of upper end inlets of hot top caps correspondingly one by one; communicating the lower end outlet of each hot
top cap with a crystallizer inlet of the crystallizer, wherein the distances between a flow storage slot and the runners of all crystallizers are same; heating a heat preserving sleeve to the temperature of between 100 and 150 DEG C; opening the outlet of a
smelting furnace, feeding molten aluminum alloy into all the crystallizers through the runners, and performing
water cooling; stopping for 5 to 10 seconds after the liquid level of the molten aluminum alloy in the runners reaches a preset position; and moving an
ingot guiding device downwards. The surface of each
ingot is smooth, does not have cracks and has small segregation tumors, and each ingot does not have air pores, is not loose and has small grains.