Casting method of aluminum alloy wheel rim

Abstract

The invention relates to a casting method of an aluminum alloy wheel rim. The method comprises the following steps: firstly manufacturing an aluminum alloy ring by using a simple gravity casting mold and an aluminum ingot which is the same with material for manufacturing the aluminum alloy wheel rim, respectively pre-heating the aluminum alloy ring and a metal casting mold, putting the pre-heated aluminum alloy ring on the step of the bottom mold of a low-pressure casting mold, then closing the mold, pressing alloy-containing molten aluminum into the cavity, melting the molten aluminum and the aluminum alloy ring into a whole, wherein the aluminum alloy ring is put into previously; cooling, then demolding to obtain a blank, carrying out heat treatment; turning off the aluminum alloy ring and other excessive blanks; and reclaiming the waste materials, and manufacturing into the aluminum alloy wheel rim product. In the method, the aluminum alloy ring is firstly arranged at the original hot spot of the low-pressure casting mold as one part of the bottom die, achieves the effect equivalent to the side wall of the die in the casting process, is finally molten with the product into a whole, and is turned off by machining, thereby fundamentally eliminating the problems of shrinkage cavity, looseness and difficult demolding as a result of the wall unevenness caused by the hot spot of the cast and ensuring the quality of the product. The method is applicable to the aluminum alloy wheel rim production by any casting method.

Description

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AI Technical Summary

Benefits of technology

By combining two different materials together instead of just having them separately or requiring extra hardware like gate bars during high pressure castings, we have developed a new way to improve metal quality while reducing costs compared to traditional ways such as removing excessive parts after production.

Problems solved by technology

This patented technical solution describes how to improve the quality and quantity of aluminium alloy products produced through various processes like foundry or gas pressurized casting (GP). However, current solutions require expensive investments due to their complexity and limitations with respect to producing specific types of alloys without compromising other qualities that may result in inferior performance characteristics compared to desired properties.

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