A metal casting riser sleeve system includes a mold cavity and a vented riser sleeve. The vented riser sleeve includes a riser reservoir and a vent passage. The riser reservoir is fluidly connected to the mold cavity and configured to allow molten alloy to flow from the mold cavity to the vented riser sleeve to create a casting portion. The vent passage extends through a length of the vented riser sleeve to allow airflow from the mold cavity through the vent passage.

A metal casting system includes a cope mold portion, a drag mold portion, and a mold cavity. The cope mold portion comprises internal cope mold walls. The drag mold portion comprises internal drag mold walls. The cope mold portion and the drag mold portion comprise a molding material comprising a plurality of metal particles.

The mold cavity is representative of a mold pattern, wherein the internal cope mold walls and the internal drag mold walls define, at least in part, the perimeter of the mold cavity.

A system for manufacturing a wheel includes a cope mold portion with internal cope mold walls and a drag mold portion with internal drag mold walls. The internal cope mold walls and internal drag mold walls define at least in part perimeter boundaries of a wheel cavity. The wheel cavity includes a cavity center portion configured to form a wheel center portion of a wheel after solidification of a molten alloy in the cavity center portion, a cavity plate portion configured to form a wheel plate portion of the wheel after solidification of a molten alloy in the cavity plate portion, and a cavity flange portion configured to form a wheel flange portion of the wheel after solidification of a molten alloy in the cavity flange portion. The system includes a chill component positioned within the wheel cavity adjacent the cavity flange portion. The chill component is configured to provide directional solidification from the cavity flange portion toward the cavity plate portion of molten alloy in the wheel cavity.

A system for manufacturing a wheel includes a cope mold portion with internal cope mold walls and a drag mold portion with internal drag mold walls. The internal cope mold walls and internal drag mold walls define at least in part perimeter boundaries of a wheel cavity. The wheel cavity includes a cavity center portion configured to form a wheel center portion of a wheel after solidification of a molten alloy in the cavity center portion, a cavity plate portion configured to form a wheel plate portion of the wheel after solidification of a molten alloy in the cavity plate portion, and a cavity flange portion configured to form a wheel flange portion of the wheel after solidification of a molten alloy in the cavity flange portion. The system includes a chill component positioned within the wheel cavity adjacent the cavity flange portion. The chill component is configured to provide directional solidification from the cavity flange portion toward the cavity plate portion of molten alloy in the wheel cavity.

A cast metal railroad car wheel includes a hub section, a tread section, and an uninterrupted annular web extending between and supporting the tread section on the hub section. The web includes a disk-shaped surface that is continuously concave and that does not include a reversely curved portion. A V-process casting process casts railroad wheels using a vacuum-process casting mold with opposing halves each partially filled with unbonded sand and sand-retaining-plastic film and a vacuum application port and that, when positioned together with the unbonded sand held to shape by vacuum and the film, define a cavity shaped to form a railroad car wheel. The V-process includes feeding molten metal into the cavity, cooling the molten metal, and releasing a vacuum to cause the sand to fall away from the railroad car wheel.

A cast metal railroad car wheel includes a hub section, a tread section, and an uninterrupted annular web extending between and supporting the tread section on the hub section. The web includes a disk-shaped surface that is continuously concave and that does not include a reversely curved portion. A V-process casting process casts railroad wheels using a vacuum-process casting mold with opposing halves each partially filled with unbonded sand and sand-retaining-plastic film and a vacuum application port and that, when positioned together with the unbonded sand held to shape by vacuum and the film, define a cavity shaped to form a railroad car wheel. The V-process includes feeding molten metal into the cavity, cooling the molten metal, and releasing a vacuum to cause the sand to fall away from the railroad car wheel.

A hub die-casting mold comprises a lower mold, a side mold, and an upper mold that are combined to form a hub casting cavity, where the lower mold is disposed on a lower mold plate, and the side mold is formed by abutting four sections of arc portions which are slidably connected to the lower mold plate, where the four sections of arc portions are divided into two groups that are respectively located at the left and right sides of the lower mold, and included angles from 3 to 10 are set between sliding tracks of two sections of arc portions in each group and a left-right diameter of the lower mold.

A hub die-casting mold comprises a lower mold, a side mold, and an upper mold that are combined to form a hub casting cavity, where the lower mold is disposed on a lower mold plate, and the side mold is formed by abutting four sections of arc portions which are slidably connected to the lower mold plate, where the four sections of arc portions are divided into two groups that are respectively located at the left and right sides of the lower mold, and included angles from 3 to 10 are set between sliding tracks of two sections of arc portions in each group and a left-right diameter of the lower mold.

The present invention provides a side-mold water spot-cooling device for cooling a casting mold, a manufacturing method thereof and a method for cooling a casting mold by the device. The technical solution of the present invention has the following technical effects: an open-type backwater structure is employed, not only eliminating the back pressure from the backwater process without adding the supercharging equipment, but also reducing the investment costs of the equipment; reducing requirements for the sealing elements, thereby reducing costs for fittings; greatly reducing use of the joints and reducing the manufacturing, maintenance difficulty and costs of the mold; and the structure is substantially the same as that of the air-cooled mold and is easy for promotion.

The present invention provides a side-mold water spot-cooling device for cooling a casting mold, a manufacturing method thereof and a method for cooling a casting mold by the device. The technical solution of the present invention has the following technical effects: an open-type backwater structure is employed, not only eliminating the back pressure from the backwater process without adding the supercharging equipment, but also reducing the investment costs of the equipment; reducing requirements for the sealing elements, thereby reducing costs for fittings; greatly reducing use of the joints and reducing the manufacturing, maintenance difficulty and costs of the mold; and the structure is substantially the same as that of the air-cooled mold and is easy for promotion.