Low-pressure casting wheel mold with aluminum alloy prefabricated framework and process of low-pressure casting wheel mold

By introducing an aluminum alloy prefabricated skeleton and cooling structure into the low-pressure casting wheel mold, the shrinkage porosity problem caused by the solidification lag of the wheel spokes is solved, realizing a high-strength and lightweight design for the wheel spokes, suitable for mass production.

CN122142287APending Publication Date: 2026-06-05SUZHOU JINGYUAN ZHONGCHENG CASTING TECH CO LTD
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Patent Information

Application Number
CN202610324090.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-17
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing low-pressure cast aluminum alloy wheels are prone to solidification lag in the spoke area, leading to defects such as shrinkage porosity and air bubbles, making it difficult to meet the requirements of high strength and lightweight design.

Method used

The low-pressure casting wheel mold with a prefabricated aluminum alloy skeleton is used. By setting prefabricated parts in the spoke cavity and combining them with positioning and cooling structures, sequential solidification and uniform heat dissipation are achieved, thereby improving the elongation, yield strength and tensile strength of the spokes.

Benefits of technology

It significantly improves the elongation and tensile strength of wheel spokes, meets the requirements of impact and fatigue testing, supports lightweight wheel design, and is suitable for mass production.

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Abstract

The low-pressure casting wheel mold with the aluminum alloy prefabricated framework comprises a side mold body, an upper mold body and a lower mold body, a spoke cavity is formed among the side mold body, the upper mold body and the lower mold body, a prefabricated part is arranged in the spoke cavity in the spoke trend, and a mold positioning and limiting device is arranged on the prefabricated part. The prefabricated part is made of an aluminum alloy metal material, the forming mode of the prefabricated part is one or more combinations of casting, forging, extruding and machining, and the shape of the prefabricated part is set to be one of a V shape, a W shape and a U shape according to the shape of the cross section of the spoke. According to the low-pressure casting wheel mold with the aluminum alloy prefabricated framework and the process of the low-pressure casting wheel mold, the elongation, the yield strength and the tensile strength of the spoke can be remarkably improved, the impact and fatigue test requirements are met, the lightweight design of the wheel is supported, the matched mold is provided with a positioning and cooling structure, the process compatibility is high, and the low-pressure casting wheel mold is suitable for large-scale production.
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