A casting mold for an aluminum alloy member

Abstract

The utility model provides a kind of casting mould of aluminium alloy piece, it is related to casting mould technical field, including: flat sprue, flat sprue is connected to sprue pocket by connecting part, sprue pocket is connected to flat cross sprue, cross sprue is located mould bottom, the bottom of sprue pocket is lower than cross sprue, cross sprue is connected to flat inner runner, the bottom of inner runner and the bottom of the inlet of casting cavity are flush;The length-width ratio of the cross section of flat sprue is 5:1 to 9:1, the cross-sectional area of cross sprue is 2 to 3 times of the cross-sectional area of flat sprue, the cross-sectional area of inner runner is 3 to 5 times of the cross-sectional area of flat sprue.The utility model can ensure that aluminium liquid flows smoothly, and air entrapment phenomenon is not easy to occur, thereby improving the quality of aluminium alloy casting.

Description

Technical Field

[0001] This utility model relates to the field of casting mold technology, and in particular to a casting mold for aluminum alloy parts. Background Technology

[0002] In the casting industry, aluminum alloys are a commonly used material, and gravity casting is one of the most common methods for aluminum alloy casting, offering advantages such as convenient operation, simple process, and low equipment and mold costs. However, with the increase in product size and structural complexity, traditional gravity casting systems struggle to effectively control the flow of molten metal, easily leading to problems such as air entrapment, slag entrapment, and high-speed mold stamping, thus failing to effectively control product quality. For example, aluminum alloy castings with complex structures, such as automotive valve bodies, not only have high dimensional requirements but also small wall thicknesses and complex structures, making it difficult for existing commonly used casting methods to guarantee the overall quality and dimensional accuracy of the castings. Utility Model Content

[0003] The purpose of this invention is to provide a casting mold for aluminum alloy parts, which solves the technical problem that traditional gravity casting systems in the prior art cannot effectively control the flow state of molten aluminum.

[0004] This utility model provides a casting mold for aluminum alloy parts, including: a flat sprue, the sprue being connected to a gating recess via a connecting part, the gating recess being connected to a flat horizontal gating, the horizontal gating being located at the bottom of the mold, the bottom of the gating recess being lower than the horizontal gating, the horizontal gating being connected to a flat ingate, and the bottom of the ingate being flush with the bottom of the inlet of the casting cavity. The length-to-width ratio of the sprue is 5:1 to 9:1, the cross-sectional area of ​​the runner is 2 to 3 times that of the sprue, and the cross-sectional area of ​​the ingate is 3 to 5 times that of the sprue.

[0005] In an optional implementation, the cross-sectional aspect ratio of the sprue is 7:1.

[0006] In an optional implementation, the cross-sectional area of ​​the horizontal runner is 2.5 times that of the vertical runner.

[0007] In an optional implementation, the cross-sectional area of ​​the ingate is four times that of the sprue.

[0008] In an alternative implementation, the bottom of the gating recess is 4 to 6 millimeters lower than the runner.

[0009] In an optional implementation, the bottom of the gating recess is 5 mm lower than the runner.

[0010] In an optional embodiment, a pouring cup is also included, which is connected above the sprue, with the top of the pouring cup extending 100 to 150 millimeters above the top of the riser.

[0011] In an alternative implementation, the top of the pouring cup is 120 mm higher than the top of the riser.

[0012] In an optional embodiment, the connecting portion is a trumpet shape that gradually widens from top to bottom.

[0013] In an optional embodiment, the connecting part is provided with a filter screen.

[0014] The casting mold for aluminum alloy parts provided by this utility model has the following beneficial effects: 1. The sprue is flat and has a cross-sectional length-to-width ratio of 5:1 to 9:1. After the molten aluminum enters the sprue, it can quickly fill the sprue. During the filling process, the molten aluminum flows smoothly and is less prone to air entrapment, thereby improving the quality of aluminum alloy castings. 2. The cross-sectional area of ​​the horizontal runner is 2 to 3 times that of the vertical runner, and the cross-sectional area of ​​the ingate is 3 to 5 times that of the vertical runner. This ratio can effectively control the flow rate of the molten aluminum as it flows from the vertical runner to the horizontal runner and then to the ingate, thereby reducing turbulence during the flow of the molten aluminum, making it less likely to cause air entrapment, and also helping to settle impurities, thus improving the quality of aluminum alloy castings. 3. The bottom of the ingate is flush with the bottom of the casting cavity entrance, which makes the aluminum liquid fill more smoothly during the filling process and avoids air entrapment caused by fluctuations in the aluminum liquid due to height differences, thereby improving the quality of aluminum alloy castings. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A three-dimensional structural schematic diagram of the casting mold for aluminum alloy parts provided in the embodiments of this utility model; Figure 2 A front view structural schematic diagram of the casting mold for aluminum alloy parts provided in the embodiment of this utility model.

[0017] Icons: 100 - Sprue cup; 200 - Sprue; 300 - Connector; 400 - Sprue recess; 500 - Runner; 600 - Ingate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a casting mold for aluminum alloy parts, including: a flat sprue 200, the sprue 200 being connected to a gating recess 400 via a connecting part 300, the gating recess 400 being connected to a flat horizontal gating 500, the horizontal gating 500 being located at the bottom of the mold, the bottom of the gating recess 400 being lower than the horizontal gating 500, the horizontal gating 500 being connected to a flat ingate 600, the bottom of the ingate 600 being flush with the bottom of the entrance of the casting cavity; the cross-sectional aspect ratio of the sprue 200 is 5:1 to 9:1, the cross-sectional area of ​​the horizontal gating 500 is 2 to 3 times the cross-sectional area of ​​the sprue 200, and the cross-sectional area of ​​the ingate 600 is 3 to 5 times the cross-sectional area of ​​the sprue 200.

[0026] in, Figure 1 This is a three-dimensional structural diagram of the casting mold for aluminum alloy parts provided in an embodiment of the present utility model. Figure 2 A front view structural schematic diagram of the casting mold for aluminum alloy parts provided in the embodiment of this utility model. Figure 1 and Figure 2 Although no cross-sectional view of the mold is taken, the shape and positional relationship of parts such as the sprue 200, connecting part 300, sprue recess 400, horizontal sprue 500, and ingate 600 can be observed from the outside of the mold, which can fully express the structural features of this embodiment.

[0027] In this embodiment, the sprue 200 is flat and has a cross-sectional length-to-width ratio of 5:1 to 9:1. After the molten aluminum enters the sprue 200, it can quickly fill the sprue 200. During the filling process, the molten aluminum flows smoothly and is less prone to air entrapment, thereby improving the quality of the aluminum alloy casting.

[0028] In this embodiment, the cross-sectional area of ​​the horizontal sprue 500 is 2 to 3 times that of the sprue 200, and the cross-sectional area of ​​the ingate 600 is 3 to 5 times that of the sprue 200. This ratio can effectively control the flow rate of molten aluminum as it flows sequentially from the sprue 200 to the horizontal sprue 500 and then to the ingate 600, thereby reducing turbulence during the flow of molten aluminum, making it less prone to air entrapment, and also helping to settle impurities, thus improving the quality of aluminum alloy castings.

[0029] In this embodiment, the bottom of the ingate 600 is flush with the bottom of the inlet of the casting cavity, which makes the aluminum liquid more stable during the filling process and avoids air entrapment caused by fluctuations in the aluminum liquid due to height differences, thereby improving the quality of the aluminum alloy casting.

[0030] like Figure 1 and Figure 2 As shown, the ingate and the runner can be symmetrically arranged on both sides of the sprue.

[0031] Preferably, the aspect ratio of the cross-section of the sprue 200 is 5:1, 6:1, 7:1, 8:1, or 9:1, with 7:1 being more preferred. Using these aspect ratios, the sprue 200 can be configured as a flat sprue, ensuring smooth flow of molten aluminum during the filling process and minimizing air entrapment.

[0032] Preferably, the cross-sectional area of ​​the horizontal runner 500 is 2.5 times that of the vertical runner 200, the cross-sectional area of ​​the ingate 600 is 4 times that of the vertical runner 200, and the ratio of the cross-sectional areas of the vertical runner 200, the horizontal runner 500 and the ingate 600 is 1:2.5:4.

[0033] Preferably, the bottom of the gating recess 400 is 4 mm to 6 mm lower than the runner 500, and more preferably, the bottom of the gating recess 400 is 5 mm lower than the runner 500.

[0034] In this embodiment, a pouring cup 100 is also included. The pouring cup 100 is connected above the sprue 200, and the top of the pouring cup 100 is 100 mm to 150 mm higher than the top of the riser. The pouring cup 100 is generally rectangular trapezoidal in shape, and its specific design can be based on the weight of the casting, i.e., the amount of molten aluminum used, to ensure that the molten aluminum in the pouring cup 100 can meet the required amount of molten aluminum and form a pressure head. Preferably, the top of the pouring cup 100 is 120 mm higher than the top of the riser.

[0035] In some embodiments, such as Figure 1 As shown, the connecting part 300 is a trumpet shape that gradually widens from top to bottom. The trumpet-shaped connecting part 300 allows the molten aluminum to enter the gating socket 400 smoothly, avoiding splashing of molten aluminum and thus ensuring the quality of the casting.

[0036] In some embodiments, the connecting part 300 is provided with a filter screen, which can be used to filter impurities, oxide scale, etc. in the molten aluminum. In combination with the ratio of the cross-sectional areas of the sprue 200, the gating 500, and the ingate 600, it can further reduce the entry of impurities into the mold cavity.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A casting mold for aluminum alloy parts, characterized in that, include: A flat sprue (200) is connected to a runner recess (400) via a connecting part (300). The runner recess (400) is connected to a flat horizontal runner (500). The horizontal runner (500) is located at the bottom of the mold. The bottom of the runner recess (400) is lower than the horizontal runner (500). The horizontal runner (500) is connected to a flat ingate (600). The bottom of the ingate (600) is flush with the bottom of the inlet of the casting cavity. The cross-sectional aspect ratio of the sprue (200) is 5:1 to 9:1, the cross-sectional area of ​​the gating system (500) is 2 to 3 times that of the sprue (200), and the cross-sectional area of ​​the ingate (600) is 3 to 5 times that of the sprue (200).

2. The casting mold for aluminum alloy parts according to claim 1, characterized in that, The cross-sectional aspect ratio of the sprue (200) is 7:

1.

3. The casting mold for aluminum alloy parts according to claim 1, characterized in that, The cross-sectional area of ​​the horizontal runner (500) is 2.5 times that of the vertical runner (200).

4. The casting mold for aluminum alloy parts according to claim 1, characterized in that, The cross-sectional area of ​​the ingate (600) is four times that of the sprue (200).

5. The casting mold for aluminum alloy parts according to claim 1, characterized in that, The bottom of the gating socket (400) is 4 mm to 6 mm lower than the horizontal gating (500).

6. The casting mold for aluminum alloy parts according to claim 5, characterized in that, The bottom of the gating socket (400) is 5 mm lower than the horizontal gating (500).

7. The casting mold for aluminum alloy parts according to claim 1, characterized in that, It also includes a pouring cup (100) connected above the sprue (200), the top of the pouring cup (100) being 100 mm to 150 mm higher than the top of the riser.

8. The casting mold for aluminum alloy parts according to claim 7, characterized in that, The top of the pouring cup (100) is 120 mm higher than the top of the riser.

9. The casting mold for aluminum alloy parts according to claim 1, characterized in that, The connecting part (300) is a trumpet shape that gradually widens from top to bottom.

10. The casting mold for aluminum alloy parts according to claim 1, characterized in that, The connecting part (300) is provided with a filter screen.

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