Molding sand structure

The utility model discloses a molding sand structure which comprises a brick body sand mold and a dead head, the dead head is arranged at the top of the brick body sand mold, the dead head and the brick body sand mold form a hollow integrated structure with an opening at the upper part, the inner side surfaces of the dead head and the brick body sand mold are respectively provided with an anti-impact layer, and the anti-impact layers are zirconium oxide layers. Compared with the prior art, according to the molding sand structure disclosed by the utility model, in the casting process, the anti-impact layers on the inner side surfaces of the dead head and the brick body sand mold can resist the erosion of an electric smelting chromium zirconium corundum melt stream, so that the dead head and the brick body sand mold are prevented from being eroded, and the casting mold bubble defect and the waste product caused by mixing quartz sand into the casting mold are avoided. 本实用新型公开了一种型砂结构，包括砖体砂型和冒口，所述冒口设置在所述砖体砂型顶部，所述冒