Shell core body for sealing shell core and preventing iron drilling
By using a shell-core sealing structure and firewall design, the problem of molten iron intrusion during casting production is solved, and the quality stability of castings is achieved. This design is suitable for shell-core bodies with coated sand cores.
Patent Information
- Application Number
- CN202520438904.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In casting production, molten iron may seep into the sand core during casting, leading to defects in the finished product and affecting its quality.
A shell-core sealing structure was designed, including a first sandblasting nozzle and a second sandblasting nozzle. The second sandblasting nozzle blocks the first sandblasting nozzle. Combined with a firewall and a stepped connection structure, the length of molten iron flow is increased to prevent molten iron from entering.
Effectively prevents molten iron from entering and ensures casting quality. Through the combination of sealing structure and firewall, molten iron is prevented from entering. Suitable for core head design in non-fired areas.
Smart Images
Figure CN223848041U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of coated sand core, specifically to a shell core body of shell core seal mouth prevents drilling iron. BACKGROUND
[0002] The material for manufacturing a core in casting production is generally mixed by casting sand, core sand binder and auxiliary materials in a certain proportion. The core is mostly surrounded by high-temperature liquid metal in the mold, and the size of the supporting and positioning part is generally small. Therefore, the core sand should have not only the performance of general core sand, but also high strength, air permeability, yielding property and collapsibility. The core sand is divided into clay core sand, water glass core sand, oil core sand, combined fat core sand and resin core sand according to the different binders.
[0003] In the actual production process, the molten iron may invade when the sand core is poured after being made, causing various defects of finished products and affecting the final quality. UTILITY MODEL CONTENT
[0004] The utility model discloses a shell core body of shell core seal mouth prevents drilling iron to solve the problems in the above background.
[0005] To achieve the above object, the utility model provides the following technical scheme: including shell core body, the shell core includes shell core body, one side of the shell core body is equipped with first sand blasting nozzle, one side of the first sand blasting nozzle is equipped with second sand blasting nozzle, one side of shell core body is equipped with the connecting platform, and the connecting platform is equipped with the step -like connecting column.
[0006] Preferably, the first sand blasting nozzle groove is fixedly connected with the shell core body, and the second sand blasting nozzle is provided with a breaking point between the shell core body.
[0007] Preferably, the first sand blasting nozzle is a hollow structure, and the second sand blasting nozzle can be inserted into the inside of the first sand blasting nozzle and tightly attached to the first sand blasting nozzle.
[0008] Preferably, the shell core body is provided with a fireproof wall at the core head.
[0009] Preferably, the outer side of the shell core body is provided with a shell core outer mold, the shell core body is provided with corresponding mold grooves relative to the positions of the first sand blasting nozzle and the second sand blasting nozzle, and the shell core body is also provided with a corresponding mold groove relative to the position of the fireproof wall.
[0010] Compared with the prior art, the shell core body of the present application has the advantages that the first sand blasting nozzle can be blocked by the second sand blasting nozzle, so that the molten iron cannot enter; when the shell core body is made, the second sand blasting nozzle is arranged on the side of the first sand blasting nozzle of the shell core body; when the shell core body is made, the second sand blasting nozzle can be removed for standby; when the next shell core body is made, the second sand blasting nozzle of the previous shell core body is knocked into the first sand blasting nozzle of the shell core body, and the shell core body is solidified, so that the purpose of sealing is achieved; the molten iron cannot enter; the core head is provided with a fireproof wall, and the core head is away from the riser and the casting, so that the sealing is cancelled; the shell core body is matched with the outer shell sand core through the fireproof wall, the matching area is increased, and the molten iron is prevented from entering; and the shell core body is suitable for the core head in the non-fire area, and the shell core body is matched with other sand cores through the stepped structure, the length of the molten iron is increased, and the purpose of preventing the molten iron from entering is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 It is a three-dimensional structure schematic diagram of the present application;
[0012] Fig. 2 It is a three-dimensional structure schematic diagram of the present application;
[0013] In the figure: 1, shell core body; 2, first sand blasting nozzle; 3, second sand blasting nozzle; 4, connecting platform; 5, stepped connecting column. DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0015] Please refer to Figs. 1-2 The embodiments provided by the present application have the advantages that the first sand blasting nozzle can be blocked by the second sand blasting nozzle, so that the molten iron cannot enter; when the shell core body is made, the second sand blasting nozzle is arranged on the side of the first sand blasting nozzle of the shell core body; when the shell core body is made, the second sand blasting nozzle can be removed for standby; when the next shell core body is made, the second sand blasting nozzle of the previous shell core body is knocked into the first sand blasting nozzle of the shell core body, and the shell core body is solidified, so that the purpose of sealing is achieved; the molten iron cannot enter; the core head is provided with a fireproof wall, and the core head is away from the riser and the casting, so that the sealing is cancelled; the shell core body is matched with the outer shell sand core through the fireproof wall, the matching area is increased, and the molten iron is prevented from entering; and the shell core body is suitable for the core head in the non-fire area, and the shell core body is matched with other sand cores through the stepped structure, the length of the molten iron is increased, and the purpose of preventing the molten iron from entering is achieved.
[0016] Embodiment: including shell core body 1, the shell core includes shell core body 1, the side of shell core body 1 is equipped with first sand blasting nozzle 2. First sand blasting nozzle 2 is the structure required by the mold itself. The side of first sand blasting nozzle 2 is equipped with second sand blasting nozzle 3, and second sand blasting nozzle 3 is an accessory structure. One side of shell core body 1 is equipped with connecting platform 4, and the connecting platform 4 is equipped with stepped connecting column 5.
[0017] First sand blasting nozzle 2 groove and shell core body 1 are fixedly connected, and second sand blasting nozzle 3 and shell core body 1 are provided with a breaking point. The breaking point facilitates the separation of second sand blasting nozzle 3 and shell core body 1.
[0018] The first sand blasting nozzle 2 is a hollow structure, and the second sand blasting nozzle 3 can be inserted into the inside of the first sand blasting nozzle 2 and tightly attached to the first sand blasting nozzle 2.
[0019] The core head of the shell core body 1 is provided with a fireproof wall
[0020] The outer side of the shell core body 1 is provided with a shell core outer mold, and the shell core body 1 is provided with corresponding mold grooves relative to the positions of the first sand blasting nozzle 2 and the second sand blasting nozzle 3, and the shell core body 1 is also provided with corresponding mold grooves relative to the position of the fireproof wall.
[0021] When the shell core body 1 is made, the mold is provided with the second sand blasting nozzle 3 on the side of the first sand blasting nozzle 2 of the shell core body 1. When the shell core is made, the second sand blasting nozzle 3 can be removed and reserved for use. When the next shell core is made, the second sand blasting nozzle 3 of the last shell core is knocked into the first sand blasting nozzle of the shell core, and the core box is solidified, so as to achieve the purpose of sealing. It can prevent molten iron from entering. At the same time, the core head is provided with a fireproof wall, away from the riser and the casting, and the sealing is cancelled; the shell core body 1 is matched with the outer shell sand core through the fireproof wall, the matching area is increased, and the purpose of preventing molten iron is achieved. It is suitable for the core head in the non-fire area. The shell core body 1 is provided with a stepped structure, which can be used in cooperation with other sand cores. Through the stepped structure, the length of the molten iron flowing through is increased, so as to achieve the purpose of preventing the molten iron from penetrating.
[0022] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.
Claims
1. A core body for preventing the penetration of a drill into a core print, comprising a core body (1), characterized in that: The shell core comprises a shell core body (1), one side of the shell core body (1) is provided with a first sand blasting nozzle (2), one side of the first sand blasting nozzle (2) is provided with a second sand blasting nozzle (3), one side of the shell core body (1) is provided with a connecting platform (4), and the connecting platform (4) is provided with a stepped connecting column (5).
2. A core print body according to claim 1, wherein: The first sand blasting nozzle (2) is fixedly connected with the shell core body (1), and the second sand blasting nozzle (3) is provided with a breaking point relative to the shell core body (1).
3. A core print according to claim 2, wherein: the core print is formed of a material having a hardness of 60 or more on the JIS-C hardness scale. The first sand blasting nozzle (2) is a hollow structure, and the second sand blasting nozzle (3) can be inserted into the inside of the first sand blasting nozzle (2) and tightly attached to the first sand blasting nozzle (2).
4. The core print of claim 1, wherein: the core print is formed of a material having a density of 7.8 g / cm3 or greater. The shell core body (1) is provided with a fireproof wall at the core head.
5. The core print of claim 1, wherein: the core print is formed of a material having a density of 7.8 g / cm3 or greater. The outer side of the shell core body (1) is provided with a shell core outer mold, corresponding mold grooves are arranged on the shell core body (1) relative to the positions of the first sand blasting nozzle (2) and the second sand blasting nozzle (3), and corresponding mold grooves are arranged on the shell core body (1) relative to the position of the fireproof wall.