Wheel hub casting process

The invention discloses a wheel hub casting process. The wheel hub casting process comprises the following steps that S1, firstly, a mold is subjected to modeling and sand covering; s2, the sand-coated molds are placed in a storage device in batches, so that the molds are annularly arranged in the horizontal direction, and the diameters of the molds are gradually changed in the vertical annular direction in a stacked mode; s3, the blending unit is rotated, a pouring device containing molten metal liquid in the blending unit is arranged on the upper side of the storage device, the storage device ascends and is matched with the pouring device, the metal liquid is poured into the mold, and the storage device descends; s4, the blending unit is reversely rotated, so that the cooling device is located on the upper side of the storage device, the storage device ascends and is matched with the cooling device, cooling liquid in the cooling device enters a cooling channel in the mold, and the casting is cooled; and S5,