Low-pressure casting multi-sprue process and device for aluminum alloy wheel

Abstract

The present application relates to a low-pressure casting multi-sprue process and device for an aluminum alloy wheel. A multi-sprue casting method is adopted, and a plurality of sprues are arranged at the end of the inner flange of a wheel, so that molten aluminum enters at the inner flange first, then enters from a center sprue after a mold cavity at the rim is full of the molten aluminum. The mold assembly is pressurized and cooled after the mold cavity is full of the molten aluminum. During cooling, starting from the outer flange of the wheel filled with the molten aluminum last, side mold ring water coolers are started.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Chinese Patent Application No. 201810204230.8, filed on Mar. 13, 2018, which is hereby incorporated by reference in its entirety.TECHNICAL FIELD[0002]The present application relates to a low-pressure casting multi-sprue process and device for an aluminum alloy wheel.BACKGROUND ART[0003]At present, the conventional low-pressure casting of aluminum alloy wheels mostly adopts a center bottom injection process. Molten aluminum enters a mold cavity through a center sprue, flows across the spokes of a wheel, and then turns to fill the rim vertically, until the filling is completed. In the process of crystallization and solidification, the rim is at a distal end far away from the center sprue and is solidified first. Therefore, it is necessary to preferentially feed the rim by the spokes to delay the crystallization and solidification time of the spokes, which affects the mechanical properties of the aluminum ...

AI Technical Summary

Benefits of technology

The patent aims to improve the quality of aluminum alloy wheels and increase production efficiency. It introduces a low-pressure casting process and device that focuses on improving the elongation of spokes and the casting production efficiency at the same time. The design includes a plurality of sprues and a center sprue, which shortens the filling time of molten aluminum and improves the filling production efficiency. The casting process involves solidification in a specific order, resulting in improved internal compactness and good mechanical properties. Overall, the patent provides a simple and easy-to-operate process for producing high-quality aluminum alloy wheels.

Problems solved by technology

Therefore, it is necessary to preferentially feed the rim by the spokes to delay the crystallization and solidification time of the spokes, which affects the mechanical properties of the aluminum alloy wheel materials.

Particularly, the elongation of the spokes is generally low, which directly affects the overall quality of the wheel.

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