Microalloyed cast glass mold and a manufacturing method

The present invention discloses a micro-alloyed iron glass mold, comprising the following components mass percentage: C3.55 ~ 3.65%, Si1.85 ~ 1.95%, Mn0.50 ~ 0.55%, Cr0.05 ~ 0.10%, Ni0. 05 ~ 0.10%, Mo0.50 ~ 0.55%, V0.06 ~ 0.07%, Ti0.10 ~ 0.20%, Cu0 ~ 0.10%, the rest is Fe. The method of manufacturing a mold of a glass melting, bred, casting and annealing process, using 75 ferrosilicon inoculant inoculant inoculant barium and silicon as a common stream inoculation inoculant to the bag cavity ++ inoculation inoculation inoculation mixed manner. The resulting graphite morphology microalloyed cast glass mold at ~ 8mm lumen near the D-type, length of graphite 6 to 8, the number of pearlite & lt; 5%, carbide-free, excellent mechanical properties.