An exhausting device of a low-pressure aluminum alloy wheel casting mold, which includes a control mainframe, a connecting line, a gas storage station, a ventilating pipeline, gas inlet plugs, an exhausting plug and the like, the control mainframe is connected with the gas storage station through the connecting line, and the gas storage station is connected with the gas inlet plugs through the ventilating pipeline; the gas inlet plugs are arranged at the bottom mold window; the mold filling process of the high-temperature molten aluminum can be completed in a relatively oxygen-free environment, direct contact between the molten aluminum and oxygen is avoided, and the occurrence probability of the oxidation slag inclusion defect in the wheel casting process is effectively controlled, so that the internal quality of the casting is remarkably improved.

An exhausting device of a low-pressure aluminum alloy wheel casting mold, which includes a control mainframe, a connecting line, a gas storage station, a ventilating pipeline, gas inlet plugs, an exhausting plug and the like, the control mainframe is connected with the gas storage station through the connecting line, and the gas storage station is connected with the gas inlet plugs through the ventilating pipeline; the gas inlet plugs are arranged at the bottom mold window; the mold filling process of the high-temperature molten aluminum can be completed in a relatively oxygen-free environment, direct contact between the molten aluminum and oxygen is avoided, and the occurrence probability of the oxidation slag inclusion defect in the wheel casting process is effectively controlled, so that the internal quality of the casting is remarkably improved.

A method for manufacturing a light alloy wheel that includes a substantially annular rim part and a disc part that is joined to one edge of the rim part on an inner side and is to be attached to an axle. The method includes a molten metal pouring step for pouring a light alloy molten metal from a sprue opened into a mold cavity formed into a shape of the rim part, and a forced cooling step for, after the molten metal pouring step, forcibly cooling the light alloy molten metal poured into the mold cavity formed into the shape of the rim part such that one predetermined cooling unit of a plurality of cooling units provided along an entire circumference on an outer side or an inner side of the mold cavity formed into the shape of the rim part is first operated and an other cooling unit thereof is then operated.

A method for manufacturing a light alloy wheel that includes a substantially annular rim part and a disc part that is joined to one edge of the rim part on an inner side and is to be attached to an axle. The method includes a molten metal pouring step for pouring a light alloy molten metal from a sprue opened into a mold cavity formed into a shape of the rim part, and a forced cooling step for, after the molten metal pouring step, forcibly cooling the light alloy molten metal poured into the mold cavity formed into the shape of the rim part such that one predetermined cooling unit of a plurality of cooling units provided along an entire circumference on an outer side or an inner side of the mold cavity formed into the shape of the rim part is first operated and an other cooling unit thereof is then operated.

A method for producing a one-piece cast vehicle wheel, the wheel having at least one hub portion connected to a wheel rim via at least one spoke oriented in the radial direction of the wheel, in which at least one lost core is inserted in a molding of the casting machine, the one-piece vehicle wheel is cast, and the lost core is removed from the cast vehicle wheel and thereby forms at least one opening in the spoke. A one-piece cast vehicle wheel formed by the method is also provided.

A method for producing a one-piece cast vehicle wheel, the wheel having at least one hub portion connected to a wheel rim via at least one spoke oriented in the radial direction of the wheel, in which at least one lost core is inserted in a molding of the casting machine, the one-piece vehicle wheel is cast, and the lost core is removed from the cast vehicle wheel and thereby forms at least one opening in the spoke. A one-piece cast vehicle wheel formed by the method is also provided.

A method for manufacturing a roll mantle or roll body for a roll line of a continuous casting apparatus that has a shaft includes casting a metal to form the roll mantle or roll body such that the roll mantle or roll body includes at least one internal channel. The roll mantle or roll body has a first end region, a second end region and a central region between the first end region and the second end region, the central region extending along at least 50% of a length of the roll mantle or roll body, and the internal channel may be formed in the central region. The internal channel may also include a pattern or projection.

A method for manufacturing a roll mantle or roll body for a roll line of a continuous casting apparatus that has a shaft includes casting a metal to form the roll mantle or roll body such that the roll mantle or roll body includes at least one internal channel. The roll mantle or roll body has a first end region, a second end region and a central region between the first end region and the second end region, the central region extending along at least 50% of a length of the roll mantle or roll body, and the internal channel may be formed in the central region. The internal channel may also include a pattern or projection.

A mold (1) according to an embodiment of the present invention is a mold which is formed by additive manufacturing. The mold includes: a heat medium channel (10) for a heat medium to flow through, the heat medium channel being provided inside the mold; a medium introduction port (4) at which the heat medium is to be introduced into the mold; a medium discharge port (5) at which the heat medium is to be discharged out of the mold; and a buffer layer (20) located between a mold surface (1a) and the heat medium channel. The buffer layer includes a low-melting percentage portion (21) having a lower melting percentage than does any portion inside the mold other than the buffer layer.

A mold (1) according to an embodiment of the present invention is a mold which is formed by additive manufacturing. The mold includes: a heat medium channel (10) for a heat medium to flow through, the heat medium channel being provided inside the mold; a medium introduction port (4) at which the heat medium is to be introduced into the mold; a medium discharge port (5) at which the heat medium is to be discharged out of the mold; and a buffer layer (20) located between a mold surface (1a) and the heat medium channel. The buffer layer includes a low-melting percentage portion (21) having a lower melting percentage than does any portion inside the mold other than the buffer layer.