Abstract: A casting method and apparatus are provided capable of producing high-quality castings having extremely few defects attributable to entrainment of gas, oxide film and the like both economically and while conserving energy. The invention relates to a high-vacuum-suction casting apparatus for producing cast products by raising up molten metal and introducing the molten metal into a die above, having a holding furnace for retaining the molten metal, a die arranged above the holding furnace, a feeding tube for supplying the molten metal from the holding furnace to the die cavity, and a movable sealing member capable of opening and closing a space between the gate provided in a bottom of the die and the outlet of the feeding tube.

Abstract: A casting method and apparatus are provided capable of producing high-quality castings having extremely few defects attributable to entrainment of gas, oxide film and the like both economically and while conserving energy. Namely, a sealing plate having a seal, an opening and a pressure reduction vent is arranged between a gate of a die cavity and a feeding tube, and the die cavity is depressurized by sealing the gate. Next, the inside of the feeding tube is depressurized through the pressure reduction vent provided in the lower surface of the sealing plate to suck a molten metal, the opening of the sealing plate is moved to between the gate and the feeding tube when the molten metal has entered the pressure reduction vent, and the molten metal is filled into the die cavity due to the pressure difference between the die cavity and the molten metal in the feeding tube. A consumable seal made of a material similar to the molten metal can also be used for the gate seal.