WATER-COOLED MOLD FOR CASTING ALUMINUM ALLOY WHEEL

Abstract

The present application provides a water-cooled mold for casting an aluminum alloy wheel, which is composed of a top mold, a side mold and a bottom mold, wherein a side mold insert is included between the side mold and the bottom mold, the inner surface of the side mold insert faces a cavity, and the upper surface and the lower surface are matched with the side mold frame respectively; the side mold insert is made of copper; the matching surface between the side mold insert and the side mold has a contact matching surface having a length of 10-15 mm at the edges of the inner ring and the outer ring respectively. And the side mold insert and the side mold form a gap which is 0.05-0.20 mm between the contact matching surfaces.

Claims

1. A water-cooled mold for casting an aluminum alloy wheel, comprising a top mold, a side mold and a bottom mold, wherein a side mold insert is arranged between the side mold and the bottom mold, the inner surface of the side mold insert faces a cavity, and the upper surface and the lower surface are matched with the side mold frame respectively; the side mold insert is made of copper; the matching surface between the side mold insert and the side mold has a contact matching surface having a length of 10-15 mm at the edges of the inner ring and the outer ring respectively, and a gap of 0.05-0.20 mm is formed between the side mold insert and the side mold.

2. The water-cooled mold according to claim 1, wherein the matching surface between the side mold insert and the side mold has a contact matching surface having a length of 12 mm at the edges of the inner ring and the outer ring of the matching surface respectively, and a gap of 0.10 mm is formed between the side mold insert and the side mold, and the gap is formed also between the contact matching surfaces.

3. The water-cooled mold according to claim 1, wherein in the water-cooled mold, a cooling water channel of the bottom mold is located on the outer side of the bottom mold.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0010] The embodiments of the present invention will be described in detail below in combination with the accompanying drawings, in which:

[0011] FIG. 1 is a schematic diagram of a side mold insert for spoke roots in the prior art;

[0012] FIG. 2 is a schematic diagram of a side mold insert for spoke roots according to the present application;

[0013] FIG. 3 is a schematic diagram of a matching surface of the side mold insert and a side mold according to the present application.

[0014] In figures: 1side mold insert, 2bottom mold cooling water channel, Aupper surface of the side mold insert, Blower surface of the side mold insert.

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1

[0015] A water-cooled mold for casting an aluminum alloy wheel is composed of a top mold, a side mold and a bottom mold, and a side mold insert is arranged between the side mold and the bottom mold, the inner surface of the side mold insert faces a cavity, the side mold insert upper surface A is matched with the lower surface of the side mold, and the side mold insert lower surface B is matched with the upper surface of the bottom mold; the side mold insert is made of copper; the matching surface between the side mold insert and the side mold has a contact matching surface having a length L.sub.1 at the edges of the inner ring and the outer ring of the matching surface respectively. And a gap L.sub.2 is formed between the side mold insert and the side mold. The gap is formed also between the contact matching surfaces.

[0016] In this embodiment, the following implementation scheme is adopted for test, and the test settings are recorded in Table 1:

TABLE-US-00001 TABLE 1 Parameters of each group of test device in this embodiment Group No. L.sub.1/mm L.sub.2/mm Test group 1 10 0.05 Test group 2 12 0.10 Test group 3 15 0.20 Control The side mold insert is made of mold steel and the entire group 1 matching surface is fully fitted Control The side mold insert is made of red copper and the entire group 2 matching surface is fully fitted.

[0017] The above five groups of water-cooled molds are used to produce five groups of hubs in the internal research and development workshop of CITIC Dicastal Co., Ltd., 1200 hubs constituting each group. In addition, the test results of the five test groups are measured by hub disqualification caused by the shrinkage porosity defect at spoke roots. The results show that the test group 2 has the best hub production quality, and the unqualified hubs caused by the shrinkage porosity defect at the spoke roots include 12 cases in test group 2, 37 cases in test group 1, 42 cases in test group 3, 81 cases in control group 1 and 54 cases in control group 2.

[0018] Hence, the mold of test group 2 reduces the ratio of the unqualified hubs caused by the shrinkage porosity defect at the spoke roots.

[0019] The foregoing descriptions of specific exemplary embodiments of the present application have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and their practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the present invention, as well as various alternatives and modifications thereof. It is intended that the scope of the invention be defined by the Claims appended hereto and their equivalents.