A gravity-casting aluminum liquid flow stabilization device

Abstract

This utility model discloses a gravity-casting aluminum molten flow stabilizing device, including an upper filter element and a lower filter element. The upper filter element is funnel-shaped, and the lower filter element is cylindrical. The upper filter element is disposed on top of the lower filter element, and a portion of the upper filter element is disposed inside the lower filter element. This utility model can slow down the flow rate of aluminum molten material in the mold and prevent air entrapment in the aluminum molten material.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and more specifically, to a gravity-casting aluminum liquid flow stabilization device. Background Technology

[0002] Currently, in gravity casting of aluminum alloy wheels, a wire mesh is placed at the gate. The molten aluminum flows into the mold after being filtered through this mesh. However, the molten aluminum flowing into the bottom of the mold by gravity causes splashing and air entrapment. This entrapped air is trapped by the viscous molten aluminum and is difficult to escape. Ultimately, it is trapped inside the casting or on the subsurface surface, affecting the product's strength or appearance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gravity-casting aluminum liquid stabilization device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a gravity-cast aluminum liquid flow stabilization device, including an upper filter element and a lower filter element. The upper filter element is funnel-shaped with an open upper end and a closed lower end, and the lower filter element is cylindrical. The upper filter element is disposed on the upper part of the lower filter element, and part of the upper filter element is disposed inside the lower filter element.

[0006] Furthermore, both the upper and lower filter elements are made of filter screens.

[0007] Furthermore, the mesh size of the filter screen is 10-12 mesh.

[0008] Furthermore, the filter screen is made of steel wire.

[0009] Furthermore, the maximum diameter of the upper filter element is 1.4-1.8 times the diameter of the lower filter element.

[0010] Furthermore, the length of the portion of the upper filter element located inside the lower filter element is 40-60% of the overall length of the upper filter element.

[0011] The beneficial effects of this utility model are: the upper filter element plays the role of filtering aluminum liquid, filtering out impurities and oxide scale in the aluminum liquid, and the lower filter element extends into the mold, which plays the role of slowing down the flow of aluminum liquid and stabilizing the flow rate of aluminum liquid. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a gravity-casting aluminum liquid flow stabilization device in this embodiment;

[0013] Figure 2 This is a schematic diagram showing the usage state of the gravity-casting aluminum liquid stabilization device in this embodiment.

[0014] Reference numerals: 1. Upper filter element; 2. Lower filter element; 3. Mold. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 As shown, a gravity-casting aluminum molten liquid flow stabilization device includes an upper filter element 1 and a lower filter element 2. The upper filter element 1 is a funnel-shaped filter screen with an open upper end and a closed lower end. The lower filter element 2 is a cylindrical filter screen. The length of the lower filter element 2 is set according to the length of the mold.

[0017] like Figure 2 As shown, the lower filter element 2 is placed into the mold through the mold gate, with its lower part contacting the bottom of the mold and its upper end extending out of the mold. The upper filter element 1 is placed on top of the lower filter element 2, with its lower end inserted into the top of the filter element 2. Molten aluminum is poured into the opening of the upper filter element 1, which filters out impurities and oxide scale. The filtered molten aluminum then enters the lower filter element 2 and then flows into the mold. The lower filter element 2 slows down the flow of molten aluminum, stabilizes its flow rate, and prevents air entrapment caused by molten aluminum tumbling during its descent, thus improving the internal quality and yield of the product.

[0018] After the aluminum molten material is fed in, the upper filter element 1 and the lower filter element 2 are removed from the mold.

[0019] If the mesh size of the wire mesh is too small, it will not be able to filter and control the flow of the aluminum liquid. If the mesh size is too large, it will affect the flow rate of the aluminum liquid, resulting in a longer filling time and affecting the product quality. The filter screens of the upper filter element 1 and the lower filter element 2 are made of 10-12 mesh stainless steel wire mesh, which can achieve better results.

[0020] Stainless steel wire mesh is composed of horizontal and vertical wires.

[0021] The maximum diameter of the upper filter element 1 is 1.4-1.8 times the diameter of the filter element 2. This ensures that the upper filter element 1 can be inserted into the opening at the top of the lower filter element 2, while also preventing the opening of the upper filter element 1 from being too large, which would cause some of the filtered molten aluminum to not enter the lower filter element 2.

[0022] The length of the part of the upper filter element 1 located inside the lower filter element 2 is 40-60% of the total length of the upper filter element 1. This ensures that the upper filter element 1 is placed relatively stably on the lower filter element 2, preventing the upper filter element 1 from tilting during the aluminum molten metal connection process.

[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A device for stabilizing the flow of molten aluminum during gravity casting, characterized by comprising: It includes an upper filter element (1) and a lower filter element (2). The upper filter element (1) is funnel-shaped and the lower filter element (2) is cylindrical. The upper filter element (1) is disposed on the upper part of the lower filter element (2), and a portion of the upper filter element (1) is disposed inside the lower filter element (2).

2. The apparatus for stabilizing flow of molten aluminum in gravity casting according to claim 1, wherein Both the upper filter element (1) and the lower filter element (2) are made of filter screens.

3. The apparatus for stabilizing flow of molten aluminum in gravity casting according to claim 2, wherein The filter screen has a mesh size of 10-12.

4. The apparatus for stabilizing flow of molten aluminum in gravity casting according to claim 2, wherein The filter screen is made of steel wire.

5. The apparatus for stabilizing flow of molten aluminum in gravity casting according to claim 1, wherein The maximum diameter of the upper filter element (1) is 1.4-1.8 times the diameter of the lower filter element (2).

6. The apparatus for stabilizing flow of molten aluminum in gravity casting according to claim 1, wherein The length of the portion of the upper filter element (1) located inside the lower filter element (2) is 40-60% of the total length of the upper filter element (1).

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