The invention relates to a mold
casting method for a hollow axle steel of a high-speed
passenger train. The method comprises the following sequential steps of: I, setting the temperature of
ingot molds to be 30-80 DEG C before
casting; II,
casting 2-3 discs for each furnace, preparing 4-6
ingot molds of which capacity is 5.8-8.4 tons, pumping inside of the mold to be clean before casting, purging the
ingot molds with
argon, and adding 12-16Kg of casting
powder for each ingot mold; III, setting
molten steel superheat degree before casting process to be 35-55 DEG C; IV, before the casting process, adding a cover for the steel
ladle, covering a cap opening with an iron sheet, opening the steel
ladle, discharging 1.0-1.5t of steel, after putting the steel
stream in order, adding a central casting
pipe for casting, carrying out
argon sealing protection during the
steel casting process, setting the
ingot casting speed to be 125-165mm / min, setting the cap opening casting speed to be 35-65mm / min, when casting 1 / 2-2 / 3 of the cap opening, carrying out
trickle filling, and adding 9-12Kg of heat generating agent for each ingot mold when casting to 2 / 3 height of the cap opening; and V, setting the time from the end of casting to demolding of the steel ingot to be not less than 4.5 hours. With the steel ingot formed by mold casting method provided by the invention, the general looseness and the central looseness of the macrostructure of the axle billet cogged by the blooming mill are not more than 0.5 level, and the pattern segregation is 0.