Investment casting structure of large shell box

Abstract

The utility model discloses an investment casting structure for a large casing box body. The investment casting structure comprises an assembly number die head and a casing box body investment casting communicated with the assembly number die head, the group number die head comprises a cup pouring gate, an X-axis transverse pouring gate communicated with the cup pouring gate, a Y-axis pouring gate perpendicular to and communicated with the X-axis transverse pouring gate, a Z-axis pouring gate communicated with one end of the X-axis transverse pouring gate, a wax discharging pipeline with one end communicated with the cup pouring gate and the other end communicated with the X-axis transverse pouring gate, a first inner pouring gate and a second inner pouring gate; the X-axis runner and the Y-axis runner are both communicated with the machine shell box body investment casting through a first flow gate, the Z-axis runner is communicated with the machine shell box body investment casting through a second flow gate, and a patching material is further arranged at the second flow gate. By adopting the design of a plurality of flow gates, the flow injection stability of molten steel is ensured, the defects of air holes and slag holes of a casting are reduced, the quality of the casting is improved, a process patching material is added in a weak area of the casting, and the problem that a large steel product is easy to break is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of investment casting, in particular to an investment casting structure of a large casing. Background Art

[0002] Investment casting is also called lost wax casting, which includes the processes of pressing wax, trimming wax, forming trees, dipping slurry, melting wax, pouring molten metal and post-processing. Lost wax casting is to use wax to make a wax mold of the part to be cast, and then apply mud on the wax mold, which is the mud mold. After the mud mold is dried, put it into hot water to melt the wax mold inside. Take out the mud mold with melted wax mold and bake it into a ceramic mold. Once baked. Generally, a pouring port is left when making the mud mold, and then the molten metal is poured from the pouring port. After cooling, the required parts are made.

[0003] The existing investment casting process for large-scale housings faces some challenges, especially in ensuring the dimensional accuracy, surface quality, and internal structural integrity of the castings. Traditional casting methods produce defects such as pores and slag holes on large products, resulting in unstable product quality. In addition, for housings with complex internal cavities and installation accessories, traditional processes are difficult to achieve strict geometric tolerance control. Secondly, in the thin-walled areas of the castings, fracture and deformation problems are prone to occur, affecting the quality of the castings. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a large-scale casing investment casting structure.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] The utility model provides a large-scale machine casing investment casting structure, comprising: a group of die heads, a machine casing investment casting connected to the group of die heads;

[0007] The group of die heads includes a cup gate, an X-axis runner connected to the cup gate, a Y-axis runner perpendicular to and connected to the X-axis runner, a Z-axis runner connected to one end of the X-axis runner, a wax discharge pipe connected to the cup gate at one end and to the X-axis runner at the other end, an ingate 1, and an ingate 2;

[0008] The X-axis runner and the Y-axis runner are both connected to the casing body investment casting through the first ingates, and the Z-axis runner is connected to the casing body investment casting through the second ingates. A patch is also provided at the second ingates.

[0009] Preferably, the housing case investment casting comprises a cylindrical hollow shell and a rectangular hollow shell integrally formed with the cylindrical hollow shell.

[0010] Preferably, the rectangular hollow shell and the cylindrical hollow shell are integrally formed to form a step shape.

[0011] Preferably, the Y-axis runner includes a Y-axis runner 1 and a Y-axis runner 2; the Y-axis runner 1 and the Y-axis runner 2 are correspondingly arranged on both end sides of the X-axis cross runner.

[0012] Preferably, the cup gate is connected to the middle part of the X-axis runner.

[0013] Preferably, the number of the inner gates 1 is 3, and the X-axis cross runner, the Y-axis runner 1, and the Y-axis runner 2 are all connected to the casing body investment casting through an inner gate 1.

[0014] Preferably, the X-axis runner and the Y-axis runner 1 are both connected to the top of the cylindrical hollow shell through an inner gate 1, and the Y-axis runner 2 is connected to the top of the rectangular hollow shell through an inner gate 1.

[0015] Preferably, the number of the second inner gates is two, and the Z-axis runner is connected to the side wall of the rectangular hollow shell through the two second inner gates.

[0016] Preferably, the patch material is a square material, which is arranged on the side wall of the rectangular hollow shell and is connected to the second inner gate.

[0017] The technical solution of the utility model has the following beneficial effects:

[0018] The utility model adopts a plurality of inner gate designs, which ensures the smooth injection of molten steel, reduces the defects of pores and slag holes in castings, and improves the quality of castings.

[0019] The utility model adds process supplementary materials to the weak areas of the casting, effectively solves the problem that large steel products are easy to break, and enhances the overall structural strength of the casting.

[0020] The utility model has a cleaner wax removal process, reduces environmental pollution, and simultaneously adopts an optimized pouring system design, has a high output rate, and improves economic benefits.

[0021] The utility model has been verified by mass production and proved to be mature and reliable. It can stably produce castings that meet the requirements of customer drawings, improve production efficiency, accurately control the size of castings, and provide good surface quality, meeting the strict requirements of the casing body on the appearance and internal cavity.

[0022] The utility model reduces material waste and post-processing work by optimizing the casting process, which helps to reduce production costs. The casting structure design is not only suitable for current large-scale casings, but can also be adjusted according to specific needs and is suitable for other investment casting products with similar requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the structure of the utility model Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 . DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature is “on” or “below” a second feature.

[0031] “Under” may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature being “above”, “above”, and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being “under”, “below”, and “below” the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Reference Figures 1 to 3 The utility model provides a large-scale housing investment casting structure, comprising: a group of die heads, a housing investment casting 8 connected to the group of die heads;

[0033] The group of die heads includes a cup gate 1, an X-axis runner 2 connected to the cup gate 1, a Y-axis runner 3 perpendicular to and connected to the X-axis runner 2, a Z-axis runner 4 connected to one end of the X-axis runner 2, a wax discharge pipe 5 connected to the cup gate 1 at one end and to the X-axis runner 2 at the other end, an inner gate 1 6, and an inner gate 2 7; wherein the cup gate 1 is used to receive molten metal and guide it to the runner system. Its design helps to reduce oxidation of molten metal and avoid the entry of inclusions; the X-axis runner 2 is connected to the cup gate 1, and is responsible for distributing the molten metal from the cup gate to other runners, ensuring that the molten metal can flow evenly to different parts of the casting; the Y-axis runner 3 is perpendicular to and connected to the X-axis runner 2, further distributing the molten metal, which helps the molten metal flow smoothly and reduce turbulence, thereby reducing casting defects; the Z-axis runner 4 is connected to one end of the X-axis runner 2, and is responsible for guiding the molten metal to specific parts of the casting, especially for deep cavities of large casings or areas that are difficult to fill directly. The wax discharge pipe 5 is used to discharge residual wax in the group die head before casting, in preparation for the inflow of molten metal, so as to ensure the cost and casting quality.

[0034] The X-axis cross runner 2 and the Y-axis runner 3 are both connected to the casing body investment casting 8 through an inner gate 6, and the Z-axis runner 4 is connected to the casing body investment casting 8 through an inner gate 2 7. A patch 9 is also provided at the inner gate 2 7. The function of the patch is to strengthen the weak areas of the casting to prevent breakage during the casting process or subsequent use; the inner gate 6 is a part of the runner system, responsible for guiding the molten metal from the runner system to the casting; the inner gate 2 7 is used to guide the molten metal to specific weak areas of the casting and strengthen these areas through the patch 9.

[0035] Furthermore, the housing case investment casting 8 includes a cylindrical hollow shell 801 and a rectangular hollow shell 802 integrally formed with the cylindrical hollow shell 801. The rectangular hollow shell 802 is integrally formed with the cylindrical hollow shell 801 to form a step shape, providing the complex shape and structural strength required for the casting.

[0036] Furthermore, the Y-axis runner 3 includes a Y-axis runner 1 301 and a Y-axis runner 2 302; the Y-axis runner 1 301 and the Y-axis runner 2 302 are correspondingly arranged on both ends of the X-axis runner 2, allowing the molten metal to flow more accurately to specific areas of the casting. The cup gate 1 is connected to the middle of the X-axis runner 2. The number of the inner gates 6 is 3, and the X-axis runner 2, the Y-axis runner 1 301, and the Y-axis runner 2 302 are all connected to the casing body investment casting 8 through an inner gate 6, which increases the filling efficiency of the casting. The X-axis runner 2 and the Y-axis runner 1 301 are both connected to the top of the cylindrical hollow shell 801 through an inner gate 6, and the Y-axis runner 2 302 is connected to the top of the rectangular hollow shell 802 through an inner gate 6, ensuring that the molten metal can fill the casting evenly and effectively.

[0037] Furthermore, the number of the second ingates 7 is two, and the Z-axis runner is connected to the side wall of the rectangular hollow shell 802 through the two second ingates 7, further optimizing the flow direction of the molten metal. The patch material 9 is set as a square material, which is arranged on the side wall of the rectangular hollow shell 802 and connected to the second ingates 7 to strengthen the weak area of ​​the casting and prevent fracture.

[0038] Working principle of this utility model:

[0039] The casing investment casting 8 of the utility model adopts three ingates one, which are placed on the hot spot of the casting, welded to the die head with adhesive wax, and bear the function of connecting the die head and the product wax part; two ingates two 7 are designed to be responsible for supplementing the hot spot here and increasing the process subsidy, which is two 30*17.5 square blocks with a thickness of 4MM. Since the casting here is too thin, only 4MM, it is particularly easy to break. After adding this subsidy, this problem is completely solved.

[0040] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A large-scale housing investment casting structure, characterized in that: include: A group number die head and a casing investment casting connected to the group number die head; The group of die heads includes a cup gate, an X-axis runner connected to the cup gate, a Y-axis runner perpendicular to and connected to the X-axis runner, a Z-axis runner connected to one end of the X-axis runner, a wax discharge pipe connected to the cup gate at one end and to the X-axis runner at the other end, an ingate 1, and an ingate 2; The X-axis runner and the Y-axis runner are both connected to the casing body investment casting through the first ingates, and the Z-axis runner is connected to the casing body investment casting through the second ingates. A patch is also provided at the second ingates.

2. The large housing case investment casting structure according to claim 1 is characterized in that: The housing case investment casting comprises a cylindrical hollow shell and a rectangular hollow shell integrally formed with the cylindrical hollow shell.

3. The large housing case investment casting structure according to claim 2 is characterized in that: The rectangular hollow shell and the cylindrical hollow shell are integrally formed to be in a step shape.

4. The large-scale housing investment casting structure according to claim 1 is characterized in that: The Y-axis runner includes a Y-axis runner 1 and a Y-axis runner 2; the Y-axis runner 1 and the Y-axis runner 2 are correspondingly arranged at both end sides of the X-axis cross runner.

5. The large-scale housing investment casting structure according to claim 4 is characterized in that: The cup gate is communicated with the middle portion of the X-axis runner.

6. The large-scale housing investment casting structure according to claim 5 is characterized in that: The number of the inner gates 1 is 3, and the X-axis cross runner, the Y-axis runner 1, and the Y-axis runner 2 are all connected to the casing body investment casting through an inner gate 1.

7. The large housing case investment casting structure according to claim 6 is characterized in that: The X-axis runner and the Y-axis runner 1 are both connected to the top of the cylindrical hollow shell through an inner gate 1, and the Y-axis runner 2 is connected to the top of the rectangular hollow shell through an inner gate 1.

8. The large housing investment casting structure according to claim 7 is characterized in that: The number of the second inner gates is 2, and the Z-axis runner is connected to the side wall of the rectangular hollow shell through the two second inner gates.

9. The large-scale housing investment casting structure according to claim 8 is characterized in that: The patch material is a square material, which is arranged on the side wall of the rectangular hollow shell and is connected with the second inner gate.

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