RARE EARTH-COPPER ALLOY GLASS MOLD AND PREPARATION METHOD THEREFOR

A rare earth-copper alloy glass mold and preparation method therefor, belonging to the field of glass mold materials. The chemical element composition and mass fraction of the rare earth-copper alloy glass mold are : 9-12% of nickel, 7-10% of aluminum, 8-12% of zinc, less than 0.5% of iron and 0.01-0.5% of rare earth, the remainder being copper. Steps : preparing a brass alloy from zinc and electrolytic copper; putting weighed aluminum, nickel, iron and copper into a smelting furnace, adding the brass alloy, standing, floating impurities upward, carrying out slagging-off, adding a copper-rare earth intermediate alloy, and carrying out slagging-off again; increasing the temperature of rare earth-copper alloy glass mold melt to be poured, discharging out of the furnace and pouring into a resin sand casting mold; performing stress relief annealing on the obtained rare earth-copper alloy glass mold to be annealed, preserving heat and cooling to room temperature, thereby obtaining a finished product. The flowability and toughness of an alloy are improved; the strength and hardness of the alloy are improved, and abrasion resistance is enhanced; mechanical properties and impact corrosion resistance of materials are improved; and the toughness and thermal conductivity of the materials are improved.