Low-pressure casting process and device for aluminum alloy wheel by bilateral pouring

Abstract

The invention discloses a low-pressure casting process for an aluminum alloy wheel and a low-pressure casting device required for realizing the process. In the casting process, a casting manner of bilateral pouring is adopted; a pouring gate is formed on two sides of the wheel to allow aluminum liquid to enter from the wheel rim; and through the control of cooling, the aluminum liquid is crystallized from the wheel core to the wheel rim at a rapidly-cooled module temperature. The low-pressure casting device comprises a bilaterally-pouring module which is arranged on a machine bed platform below which a furnace cover of a low-pressure heat preserving furnace is arranged; and the furnace cover is arranged on the heat preserving furnace body which is connected with the bilaterally-pouring module through a liquid lifting pipe. In the process, as the bilaterally-pouring process is adopted for casting and symmetrical pouring gates are formed on two sides of the wheel, the aluminum liquid symmetrically enters from the two sides of the wheel rim to ensure a high casting composition consistency and a good mechanical property; in addition, the entire casting device has the advantages of simple device, identical process with that of the general low-pressure central casting, simple entire process and easy operation.

Description

technical field [0001] The invention relates to a wheel casting process and device, in particular to a low-pressure casting double-sided pouring process and device for an aluminum alloy wheel. Background technique [0002] At present, most of the aluminum alloy wheels produced in China adopt low-pressure casting. The pouring method currently used in low-pressure casting is all center pouring. The molten aluminum flows to the rim through the spokes. Because the rim is the load-bearing part of the car, the performance must be guaranteed first. Therefore, the spokes must be fed for the rim during the casting process. Due to the cooling and feeding of the molten aluminum , the wheel blank will have R-angle shrinkage at the junction of the spoke and the rim and local shrinkage of the rim, which will affect the improvement of the mechanical properties of the wheel, especially the spoke parts. The mechanical properties of the material of the wheel are not high, which will directly ...

AI Technical Summary

Problems solved by technology

The pouring method currently used in low-pressure casting is all center pouring. The molten aluminum flows to the rim through the spokes. Because the rim is the load-bearing part of the car, the performance must be guaranteed first. Therefore, the spokes must be fed for the rim during the casting process. Due to the cooling and feeding of the molten aluminum , the wheel blank will have R-angle shrinkage at the junction of the spoke and the rim and local shrinkage of the rim, which will affect the improvement of the mechanical properties of the wheel, especially the spoke parts. The mechanical properties of the material of the wheel are not high, which will directly affect the quality of the wheel.

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