Casting device capable of reducing inclusions

Abstract

A casting device capable of reducing inclusions comprises a liquid rising pipe communicated with a mold and a crucible and a cylindrical filter screen wrapping the liquid rising pipe, and the liquid rising pipe is located in the center of the cylindrical filter screen. The device is simple in structure and remarkable in effect, melt can be continuously filtered in the crucible of the die-casting machine for the die-casting machine to use, and the quality of castings is greatly improved. No redundant procedures are added, and the production takt is not affected.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically a casting device for reducing inclusions. Background Technology

[0002] In addition to the inclusions originally present in the raw materials, oxide inclusions are continuously generated during the smelting and casting processes, and these inclusions in the melt are difficult to remove. Inclusions in castings are a major factor affecting casting quality. The casting process involves continuous pressure increases and decreases, and the casting time is relatively long, typically requiring 1-3 hours to complete the casting of a crucible of molten metal. Therefore, oxide inclusions are inevitably generated during casting, affecting casting quality. As the final step in melt forming, reducing inclusions is crucial for improving product quality. Utility Model Content

[0003] In view of this, the present invention aims to provide a casting device that reduces inclusions, which can continuously filter the melt inside the crucible of the die casting machine for use by the die casting machine, thereby greatly improving the quality of the castings.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A casting apparatus for reducing inclusions includes a riser tube connecting the mold and the crucible, and a cylindrical filter screen surrounding the riser tube, with the riser tube located at the center of the cylindrical filter screen.

[0006] In some embodiments, the upper end of the cylindrical filter screen is disposed at the bottom of the mold, and there is a gap between the upper end of the cylindrical filter screen and the mold.

[0007] In some embodiments, the volume of the cylindrical filter screen is greater than twice the volume of the internal cavity of the mold.

[0008] In some embodiments, the cylindrical filter screen is made of ceramic or SiN.

[0009] In some embodiments, the cylindrical filter screen has a mesh size of 30 to 150 mesh.

[0010] In some embodiments, the level of the molten aluminum in the crucible does not exceed the top of the cylindrical filter screen.

[0011] Compared with the prior art, the casting device for reducing inclusions described in this utility model has the following advantages:

[0012] This invention discloses a casting device for reducing inclusions, which filters the melt at the end of the melt forming process, ensuring melt quality and improving casting quality. Real-time filtration of the melt during casting eliminates unnecessary steps and does not affect production cycle time. The cylindrical filter screen is made of high-temperature resistant materials such as ceramics and SiN, and can be reused. With a simple structure and significant effect, it continuously filters the melt inside the die-casting machine crucible for use by the die-casting machine, greatly improving casting quality. It does not add unnecessary steps and does not affect production cycle time. Attached Figure Description

[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0014] Figure 1 This is a schematic diagram of a casting device for reducing inclusions according to the present invention.

[0015] Explanation of reference numerals in the attached figures

[0016] 1-Mold, 2-Crucible, 3-Molten aluminum, 4-Cylindrical filter screen, 5-Liquid riser pipe. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] The following is for reference. Figure 1 The invention relates to a casting apparatus for reducing inclusions, and describes an embodiment of the present invention in conjunction with specific examples.

[0020] A casting device for reducing inclusions includes a mold 1, a crucible 2, a riser pipe 5, and a cylindrical filter screen 4. The cylindrical filter screen 4 surrounds the riser pipe 5, which is located at the center of the cylindrical filter screen 4. The upper end of the cylindrical filter screen 4 is fixed to the bottom of the mold 1, and there is a certain gap between the upper end of the cylindrical filter screen 4 and the mold 1 to ensure that the pressure in the crucible 2 is consistent with the pressure in the cylindrical filter screen 4 during pressure casting. The volume of the cylindrical filter screen 4 is more than twice the volume of the internal cavity of the mold 1 and the volume of the casting. The cylindrical filter screen 4 is made of high-temperature resistant materials such as ceramics and SiN. The cylindrical filter screen 4 has a mesh size of 30 to 150, which can be adjusted according to the melt quality and filtration speed.

[0021] The level of the molten aluminum 3 in crucible 2 does not exceed the top of the cylindrical filter screen 4, and the molten aluminum in the cylindrical filter screen 4 always meets the casting requirements. The cylindrical filter screen 4 is easy to disassemble and clean, so as to save costs by reusing it.

[0022] like Figure 1 As shown, a casting device for reducing inclusions includes a mold 1, a crucible 2, a riser pipe 5, and a cylindrical filter screen 4. The cylindrical filter screen 4 surrounds the riser pipe 5, which is located at the center of the cylindrical filter screen 4. The upper end of the cylindrical filter screen 4 is fixed to the bottom of the mold 1, and there is a certain gap between the upper end of the cylindrical filter screen 4 and the mold 1, so that the pressure inside the cylindrical filter screen 4 is consistent with the pressure in the crucible 2, ensuring the casting pressure requirements. The volume of the cylindrical filter screen 4 is more than twice the volume of the casting in the mold 1 cavity. The cylindrical filter screen 4 is made of high-temperature resistant materials such as ceramics and SiN. The cylindrical filter screen 4 has a mesh size of 30 to 150, which can be adjusted according to the melt quality and filtration speed. The liquid aluminum 3 in the crucible 2 does not exceed the upper end of the cylindrical filter screen 4, and the liquid aluminum in the cylindrical filter screen 4 always meets the casting requirements. The cylindrical filter screen 4 is easy to disassemble and clean, so as to save costs for reuse.

[0023] Compared with existing technologies, the casting device for reducing inclusions of this invention has the following advantages:

[0024] This invention discloses a casting device for reducing inclusions, which filters the melt at the end of the melt forming process, ensuring melt quality and improving casting quality. Real-time filtration of the melt during casting eliminates unnecessary steps and does not affect production cycle time. The cylindrical filter screen is made of high-temperature resistant materials such as ceramics and SiN, and can be reused. With a simple structure and significant effect, it continuously filters the melt inside the die-casting machine crucible for use by the die-casting machine, greatly improving casting quality. It does not add unnecessary steps and does not affect production cycle time.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify 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 limiting the scope of protection of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A casting apparatus for reducing inclusions, characterized in that, The riser tube (5) connects the mold (1) and the crucible (2), and the cylindrical filter screen (4) surrounds the riser tube. The riser tube (5) is located at the center of the cylindrical filter screen (4).

2. The casting apparatus for reducing inclusions according to claim 1, characterized in that, The upper end of the cylindrical filter screen (4) is located at the bottom of the mold (1), and there is a gap between the upper end of the cylindrical filter screen (4) and the mold (1).

3. The casting apparatus for reducing inclusions according to claim 1, characterized in that, The volume of the cylindrical filter screen (4) is more than twice the volume of the cavity inside the mold.

4. The casting apparatus for reducing inclusions according to claim 1, characterized in that, The cylindrical filter screen (4) is made of ceramic or SiN.

5. The casting apparatus for reducing inclusions according to claim 1, characterized in that, The cylindrical filter screen (4) has a mesh size of 30 to 150.

6. The casting apparatus for reducing inclusions according to claim 1, characterized in that, The surface (3) of the molten aluminum in the crucible (2) does not exceed the top of the cylindrical filter screen (4).

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