A method for manufacturing a bolster of a railway car truck includes providing a drag portion and a cope portion of a mold. In a main body section of the mold, a parting line that separates the drag portion from the cope portion is substantially centered between portions of the mold that define brake window openings in sides of the bolster. One or more cores are inserted into the mold and a molten material is poured into the mold to thereby case the bolster.

A method for manufacturing a bolster of a railway car truck includes providing a drag portion and a cope portion of a mold. In a main body section of the mold, a parting line that separates the drag portion from the cope portion is substantially centered between portions of the mold that define brake window openings in sides of the bolster. One or more cores are inserted into the mold and a molten material is poured into the mold to thereby case the bolster.

A molding machine forms a mold by using a transferred molding flask and pattern plate, and includes: a filling frame; a squeeze head mechanism including a squeeze board movable into and out from the filling frame, and a plurality of squeeze feet passing through the squeeze board, being able to move up and down with respect to the squeeze board; a sand injection hopper including at least one sand injection port for injecting molding sand into a molding space defined by the molding flask, the filling frame, the squeeze head mechanism, and the pattern plate; and a sand injection nozzle provided in a component detachably attached to an opening of the side portion of the filling frame to enable the sand injection port and the molding space to communicate with each other.

A molding machine forms a mold by using a transferred molding flask and pattern plate, and includes: a filling frame; a squeeze head mechanism including a squeeze board movable into and out from the filling frame, and a plurality of squeeze feet passing through the squeeze board, being able to move up and down with respect to the squeeze board; a sand injection hopper including at least one sand injection port for injecting molding sand into a molding space defined by the molding flask, the filling frame, the squeeze head mechanism, and the pattern plate; and a sand injection nozzle provided in a component detachably attached to an opening of the side portion of the filling frame to enable the sand injection port and the molding space to communicate with each other.

A method for producing iron metal castings, wherein an expendable mold having a cavity for holding casting material is inserted into an opened multi-part permanent mold, the permanent mold is closed, the cavity is filled with casting material, wherein a supporting device partially protruding into the cavity is partially overcast, the expendable mold is cooled in the permanent mold after the filling, the permanent mold is opened during the cooling, after the liquidus temperature has been fallen below at the earliest, and the expendable mold is nondestructively removed from the permanent mold together with the casting, the expendable mold is further cooled together with the solidified casting while hanging on the supporting device, at least until the microstructure formation of the casting is concluded, the casting is demolded by removing the expendable mold.

A casting mold shaping device is provided, comprising a turntable-type carrier plate replacement device; a molding flask carry-in/out device for carrying in a molding flask to a molding space forming position provided in the carrier plate replacement device and carrying out the molded molding flask; a molding flask carrier plate stacking device for stacking the molding flask which as been carried in and each carrier plate to form a molding space; a casting sand filling device for filling the molding space with the casting sands; a molding station provided so as to be adjacent to the molding space forming position and including a casting sand pressing device for pressing the casting sands to make a mold; and a molding flask carrier plate moving device for moving the carrier plate and the molding flask in stacking state from the molding space forming position to the molding station.

A casting mold shaping device is provided, comprising a turntable-type carrier plate replacement device; a molding flask carry-in/out device for carrying in a molding flask to a molding space forming position provided in the carrier plate replacement device and carrying out the molded molding flask; a molding flask carrier plate stacking device for stacking the molding flask which as been carried in and each carrier plate to form a molding space; a casting sand filling device for filling the molding space with the casting sands; a molding station provided so as to be adjacent to the molding space forming position and including a casting sand pressing device for pressing the casting sands to make a mold; and a molding flask carrier plate moving device for moving the carrier plate and the molding flask in stacking state from the molding space forming position to the molding station.

A casting mold shaping device is provided, comprising a turntable-type carrier plate replacement device; a molding flask carry-in/out device for carrying in a molding flask to a molding space forming position provided in the carrier plate replacement device and carrying out the molded molding flask; a molding flask carrier plate stacking device for stacking the molding flask which as been carried in and each carrier plate to form a molding space; a casting sand filling device for filling the molding space with the casting sands; a molding station provided so as to be adjacent to the molding space forming position and including a casting sand pressing device for pressing the casting sands to make a mold; and a molding flask carrier plate moving device for moving the carrier plate and the molding flask in stacking state from the molding space forming position to the molding station.

A casting mold shaping device is provided, comprising a turntable-type carrier plate replacement device; a molding flask carry-in/out device for carrying in a molding flask to a molding space forming position provided in the carrier plate replacement device and carrying out the molded molding flask; a molding flask carrier plate stacking device for stacking the molding flask which as been carried in and each carrier plate to form a molding space; a casting sand filling device for filling the molding space with the casting sands; a molding station provided so as to be adjacent to the molding space forming position and including a casting sand pressing device for pressing the casting sands to make a mold; and a molding flask carrier plate moving device for moving the carrier plate and the molding flask in stacking state from the molding space forming position to the molding station.