Thin-wall heat-preservation exhaust insert for counter-pressure casting

Abstract

The thin-wall heat preservation exhaust insert comprises an insert body, a sealing plug cover and a fixing bolt, the insert body is of a thin-wall cavity structure, a heat preservation cavity is formed in the insert body, exhaust grooves are evenly formed in the periphery of the outer wall of the insert body, exhaust lines are arranged on the lower portions of the exhaust grooves, and the heat preservation cavity is filled with a heat preservation material; the sealing plug cover comprises an upper sealing plug cover and a side sealing plug cover, and the upper sealing plug cover and the side sealing plug cover are welded and fixed on the insert body from the top surface and the side surface respectively to plug the heat preservation cavity of the insert body; and a fixing bolt penetrates through the bolt through hole of the insert body to mount the insert on a mold. A traditional insert is optimally designed, a thin-wall cavity heat preservation design is adopted, meanwhile, an exhaust scheme is optimized, the temperature of a local mold can be increased in the casting process, the exhaust effect can be enhanced, the defect of casting air holes is effectively reduced, and the internal quality of a casting is improved.

Description

Technical Field

[0001] The utility model relates to the field of casting, in particular to a thin-wall heat-insulating exhaust insert for differential pressure casting. Background Art

[0002] In the traditional differential pressure casting production process, due to the large casting pressure difference, air holes are easily generated inside the casting, and it is usually necessary to set exhaust inserts at the corresponding positions. Traditional inserts are mostly solid structures. Since the inserts and the mold body are assembled, the temperature is usually lower than the mold body. It is impossible to increase the mold temperature at local positions to enhance the exhaust effect while ensuring exhaust. As a result, the exhaust effect at the insert position is poor, the internal quality of the casting is unstable during the production process, and air holes are easily generated, affecting the casting yield. Utility Model Content

[0003] In order to solve the above problems, the purpose of the present invention is to provide a thin-walled heat-insulating exhaust insert for differential pressure casting, which can solve the technical problems in the background, has a simple structure, and has good heat-insulating and exhaust effects.

[0004] In order to solve the above technical problems, the technical solutions adopted in this application are:

[0005] A thin-walled thermal insulation exhaust insert for differential pressure casting includes: an insert body, a sealing plug and a fixing bolt. The insert body is a thin-walled cavity structure with an insulation cavity arranged inside. Exhaust grooves are evenly arranged around the outer wall of the insert body, and exhaust lines are arranged at the lower part of the exhaust grooves. The insulation cavity is filled with insulation material; the sealing plug includes an upper sealing plug and a side sealing plug. The upper sealing plug and the side sealing plug are welded and fixed to the insert body from the top and side respectively to seal the insulation cavity of the insert body; the fixing bolt passes through the bolt through hole of the insert body to install the insert on the mold.

[0006] Preferably, the wall thickness of the insert body is 5-8 mm.

[0007] Preferably, the inner wall of the heat-insulating cavity of the insert body is coated with heat-insulating paint.

[0008] Preferably, the exhaust grooves extend to the top of the insert, have a depth of 0.12-0.15 mm, a width of 5-6 mm, and a spacing of 5-6 mm.

[0009] Preferably, the exhaust line is processed by wire cutting, with a width of 0.15-0.2 mm, a height of 10-15 mm, and an interval of 5-10 mm.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The utility model provides a thin-walled thermal insulation exhaust insert for differential pressure casting, which optimizes the design of traditional inserts, adopts a thin-walled cavity insulation design, and adopts an optimized exhaust design combining exhaust grooves and exhaust lines. During the casting process, the local mold temperature can be increased and the exhaust effect can be enhanced, which can effectively reduce casting porosity defects, thereby achieving the purpose of improving the internal quality of the casting and increasing the casting yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 This is a schematic diagram of a thin-walled heat-insulating exhaust insert for differential pressure casting according to the present invention;

[0014] Figure 2 Schematic diagram of the structure of the insert body of the thin-walled thermal insulation exhaust insert;

[0015] Among them: 1-insert body, 11-insulation cavity, 12-exhaust groove, 13-exhaust line, 14-bolt through hole, 21-upper sealing cover, 22-side sealing cover, 3-fixing bolt. DETAILED DESCRIPTION

[0016] The terms "first", "second", "third" and "fourth" in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. Reference to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. For the convenience of description, the same elements in the drawings are represented by the same or similar figure marks, and the sizes of the various parts shown are not necessarily drawn according to the actual proportional relationship. The description of the orientation, such as the axial direction corresponding to the longitudinal length of the main body, and the orientation or position relationship indicated by the upper, lower, left, right, top, bottom, etc., are all based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The description of each embodiment below emphasizes the differences between the embodiments. The same or similar aspects can be referenced to each other. For the sake of brevity, they will not be repeated one by one. The technical features in different embodiments can be freely combined to form more embodiments according to design needs.

[0017] like Figure 1-2 As shown in the figure, this embodiment provides a thin-walled thermal insulation exhaust insert for differential pressure casting, including: an insert body 1, an insulation cavity 11, an exhaust groove 12, an exhaust line 13, a bolt through hole 14, an upper sealing cover 21, a side sealing cover 22 and a fixing bolt 3.

[0018] An insulation cavity 11 is set inside the insert body 1, and the upper sealing cover 21 and the side sealing cover 22 are fixed to the insert body 1 by welding to seal the insulation cavity 11; a bolt through hole 14 is set at the upper end of the insert body 1, and is installed on the mold through the fixing bolt 3.

[0019] The upper sealing cover 21 and the side sealing cover 22 have a thickness of 1-2 mm, which is suitable for sealing the opening of the heat preservation cavity 11 in the insert body 1 .

[0020] As mentioned above, the insert body 1 adopts a thin-wall design, with a hollow insulation cavity 11 inside and a wall thickness of 5-8 mm. The insulation cavity 11 is usually painted with insulation paint and then filled with insulation material to achieve local insulation.

[0021] Exhaust grooves 12 are evenly arranged around the outer wall of the insert body 1 and extend to the insert head, with a depth of 0.12-0.15mm, a width of 5-6mm, and an interval of 5-6mm; exhaust lines 13 are evenly arranged at the bottom of the insert body 1, which are usually processed by wire cutting, with a width of 0.15-0.2mm, a height of 10-15mm, and an interval of 5-10mm.

[0022] Thus, the outer wall of the insert body 1 is provided with exhaust grooves 12, and the bottom is provided with exhaust lines 13, providing two sets of exhaust structures in total, which enhances the exhaust effect. At the same time, combined with the internal insulation cavity 11 and insulation material of the insert body 1, it can increase the local mold temperature and better promote the exhaust of gas in the mold cavity.

[0023] The utility model optimizes the design of traditional inserts, adopts a thin-wall cavity insulation design, and adopts an optimized exhaust design combining exhaust grooves and exhaust lines. During the casting process, the local mold temperature can be increased and the exhaust effect can be enhanced, which can effectively reduce casting porosity defects, thereby achieving the purpose of improving the internal quality of the casting and increasing the casting yield.

[0024] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly defined. Unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A thin-walled heat-insulating exhaust insert for differential pressure casting, characterized in that: include: The insert body (1), a sealing plug cover and a fixing bolt (3), the insert body (1) is a thin-walled cavity structure, an insulation cavity (11) is arranged inside, exhaust grooves (12) are evenly arranged around the outer wall of the insert body (1), an exhaust line (13) is arranged at the lower part of the exhaust groove (12), and the insulation cavity (11) is filled with insulation material; the sealing plug cover includes an upper sealing plug cover (21) and a side sealing plug cover (22), the upper sealing plug cover (21) and the side sealing plug cover (22) are respectively welded and fixed on the insert body (1) from the top surface and the side surface to seal the insulation cavity (11) of the insert body (1); the fixing bolt (3) passes through the bolt through hole (14) of the insert body (1) to install the insert on the mold.

2. The thin-walled thermal insulation exhaust insert according to claim 1, characterized in that: The wall thickness of the insert body (1) is 5-8 mm.

3. The thin-walled heat-insulating exhaust insert according to claim 1, characterized in that: The inner wall of the heat-insulating cavity (11) of the insert body is coated with heat-insulating paint.

4. The thin-walled thermal insulation exhaust insert according to claim 1, characterized in that: The exhaust groove (12) penetrates to the top of the insert, has a depth of 0.12-0.15 mm, a width of 5-6 mm, and an interval of 5-6 mm.

5. The thin-walled heat-insulating exhaust insert according to claim 1, characterized in that: The exhaust line (13) is processed by wire cutting, with a width of 0.15-0.2mm, a height of 10-15mm, and an interval of 5-10mm.

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