Water cooling mold for low-pressure casting of aluminum alloy wheel

Abstract

The invention provides a water cooling mold for low-pressure casting of an aluminum alloy wheel. The water cooling side mold comprises an upper mold, a lower mold and side molds, wherein the upper mold, the lower mold and the side molds form an aluminum alloy cavity, a cooling insert is arranged into side mold frames of the side molds, an upper parting surface, a lower parting surface and side parting surfaces of the cooling insert are in contact segmentation with the side mold frames, and the side parting surfaces comprise front part areas and rear part straight section areas, and gaps of 1.5-2.5 mm are formed between the rear straight section areas and the side mold frames. A cooling water channel is designed in a straight channel mode, so that the temperature difference between the center and the two sides of the side molds is balanced, and the heat denaturation of the mold is reduced; the air permeability of the mold is improved; the cooling range of the side molds can be further controlled through the cooperative use of blind holes and a through hole heat insulation groove; and the service life of the mold can be prolonged, and the cost of the mold can be reduced.

Description

technical field [0001] The invention relates to the field of low-pressure casting of aluminum alloys, in particular to a water-cooled mold for low-pressure casting of aluminum alloy wheels. Background technique [0002] In the auto parts industry, there are extremely strict requirements for the wheel, a special part that requires both appearance and performance, especially for the performance of spokes. In aluminum wheel companies, the usual way to improve the performance of spokes is to strengthen the cooling of the side molds. This method has been used repeatedly in air-cooled molds and is effective; however, in water-cooled molds, it often has counterproductive effects. The root cause is that The mold water cooling structure design is unreasonable. attached figure 1 It shows the schematic diagram of the side mold water cooling structure of the commonly used water cooling mold at present. Since the cooling channel is opened downward, the heat insulation groove is only op...

AI Technical Summary

Problems solved by technology

In aluminum wheel companies, the usual way to improve the performance of spokes is to strengthen the cooling of the side molds. This method has been used repeatedly in air-cooled molds and is effective; however, in water-cooled molds, it often has counterproductive effects. The root cause is that Unreasonable design of mold water cooling structure

attached figure 1 It shows the schematic diagram of the side mold water cooling structure of the commonly used water cooling mold at present. Since the cooling channel is opened downward, the heat insulation groove is only opened for the window area, and it is a blind hole heat insulation groove, which will inevitably lead to a stronger cooling effect on the lower part of the side mold. In the upper part, this makes it easy to appear shrinkage at the root of the spoke when the cooling time of the side mold is slightly longer or the flow rate is slightly larger

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