Method of manufacturing flake graphite cast iron

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The present invention relates to a method of manufacturing flake graphite cast iron having high strength and excellent machinability. According to an aspect of the present invention, provided is the method of manufacturing flake graphite cast iron comprising : a first step of discharging a predetermined amount of cast iron molten metal to a ladle; a second step of adding a rare earth element to the ladle; a third step of discharging a remainder of the cast iron molten metal to the ladle; and a fourth step of discharging the cast iron molten metal to a mold from the ladle.(S100) First step of discharging a predetermined amount of cast iron molten metal to a ladle(S200) Second step of adding a rare earth element to the ladle(S300) Third step of discharging a remainder of the cast iron molten metal to the ladleCOPYRIGHT KIPO 2017