Thin shell mold casting cooling fin structure
By designing the thin shell cast cooling plate structure, the use of four-ring table-shaped cooling plate main body and heat dissipation holes, the problem of difficulty in cooling the small and medium-sized heat sections of shell casting is solved, and the cooling efficiency is improved and the convenience of cleaning is achieved.
Patent Information
- Application Number
- CN202421527795.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-01
AI Technical Summary
During the shell casting process, cooling of small thermal sections with irregular shapes is difficult to achieve, resulting in high cost and difficulty in cleaning and polishing in the later stage.
A thin shell cast cooling plate structure is designed, adopting a four-edge table-shaped cooling plate main body, with multiple heat dissipation holes on the main body of the cooling plate and a pressing groove at the bottom, which is convenient for welding with the heat joints and quickly dissipating heat.
It effectively solves the problem of small casting heat joint cooling with irregular shapes, quickly dissipates heat through the heat dissipation holes, and easily falls off and cleans it through the pressing grooves, improving the practicality and efficiency of the process.
Smart Images
Figure CN222931812U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting, in particular to a thin shell mold casting cooling fin structure. Background Technique
[0002] Shell mold casting is a method of covering a model metal template preheated with resin-coated molding sand, melting the resin by heating to form a thin shell structure, baking and hardening the thin shell, and then removing it from the template for casting the casting. It is a precision sand wheel casting method. At present, the shell mold casting process is becoming increasingly popular. It has the characteristics of flexible production organization, wide adaptability, small floor area, and is suitable for small batch and multi-variety production. The shell mold casting process is widely used and is applicable to many casting industries such as casting steel and non-ferrous metals.
[0003] During the solidification process of shell mold casting, a feeding process is required to solve the feeding problem of the casting. In some hot spot positions where the feeding process is difficult to reach, we usually use the method of chill to accelerate cooling to obtain a dense structure. However, sometimes, due to the irregular shape of some small hot spot parts, the cost of making a conforming chill is high and the later cleaning and grinding are difficult, which brings great trouble to the process designers. Therefore, it is very necessary to design a thin shell mold casting cooling fin structure with strong practicability and convenient cleaning. Content of the Utility Model
[0004] The purpose of the utility model is to provide a thin shell mold casting cooling fin structure to solve the problems raised in the above background technique.
[0005] To solve the above technical problems, the utility model provides the following technical solutions: a thin shell mold casting cooling fin structure, including the cooling fin main body, the casting and the casting hot spot. Among them, the cooling fin main body is in the shape of a frustum of a pyramid, and the bottom surface of the smaller side of the frustum area of the cooling fin main body is in contact with the top of the casting hot spot.
[0006] According to the above technical solution, a plurality of through heat dissipation holes are provided on the cooling fin main body.
[0007] According to the above technical solution, a pressing groove is provided at the bottom of the cooling fin main body.
[0008] According to the above technical solution, a sand box is fixedly sleeved on the outer surface of the cooling fin main body, molding sand is provided inside the sand box, a riser is connected above the casting, and the cooling fin main body is closely attached to the mold cavity.
[0009] According to the above technical solution, the cooling fin main body is designed to be flat.
[0010] According to the above technical solution, the surface of the cooling fin main body needs to be brushed with alcohol-based coating.
[0011] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: In the present utility model, by providing a frustum-shaped cooling fin, the problem of cooling small casting hot spots with irregular shapes in shell-type castings is effectively solved; by providing heat dissipation holes, the heat absorbed by the cooling fin due to the chilling effect during the solidification of the casting hot spot can be quickly dispersed; by providing pressing grooves, the bonding problem of the cooling fin and the hot spot being fused together is easily solved, which not only facilitates the detachment of the cooling fin but also is conducive to the grinding and cleaning work of the hot spot part of the casting. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:
[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0014] Figure 2 is a partial schematic diagram of the pressing groove part of the present utility model;
[0015] Figure 3 is a schematic diagram of the structure working of the present utility model.
[0016] In the figure: 1, cooling fin; 2, heat dissipation hole; 3, casting hot spot; 4, pressing groove; 5, riser; 6, casting; 7, sand box; 8, molding sand. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] Please refer to Figures 1-3 , the present utility model provides a technical solution: a thin shell-type casting cooling fin structure, including a cooling fin main body 1, a casting 6, and a casting hot spot 3. The cooling fin main body 1 is in the shape of a frustum. The contact surface between the cooling fin main body 1 and the casting hot spot 3 is the side with a smaller area of the frustum. This shape structure is conducive to effectively controlling the temperature of the hot spot part during shell casting, so that when the cooling fin main body 1 takes away the heat of the casting hot spot 3 and generates a chilling reaction, the heat quickly disperses to the side with a larger area of the frustum, thereby effectively preventing shrinkage cavity and shrinkage porosity defects from occurring at the casting hot spot 3.
[0019] A plurality of heat dissipation holes 2 are opened on the cooling fin main body 1. The heat dissipation holes 2 are through holes, which is conducive to quickly dispersing the heat in the cooling fin.
[0020] The bottom of the cooling fin main body 1 is provided with a pressing groove 4. During the cooling process of the casting in shell mold casting, based on the principle of heat balance, when the heat absorbed by the cooling fin cannot meet the heat released during the solidification of the hot spot of the casting, the cooling fin will be welded to the casting. The pressing groove 4 facilitates the subsequent cleaning. The cooling fin main body 1 can be easily knocked off on the hot spot 3 of the casting, and the residual part is easy to be polished off, facilitating the removal work of the casting.
[0021] The outer surface of the cooling fin main body 1 is fixedly sleeved with a sand box 7. The inside of the sand box 7 is provided with molding sand 8. In the shell mold casting process, a riser 5 is connected above the casting 6 for feeding process. In order to give full play to the heat absorption function of the cooling fin main body 1, the cooling fin main body 1 should be installed in the sand box 7 in a way that closely fits the mold cavity, and it is necessary to ensure that the contact surface between the cooling fin main body 1 and the mold cavity is flat without depression or protrusion; a lubricant should be applied to the surface of the cooling fin main body 1 to protect its gloss and service life; during the casting process, it should be regularly checked whether the cooling fin main body 1 is damaged or displaced, and timely maintained and adjusted.
[0022] The cooling fin main body 1 is in the shape of a flat sheet, saving materials while meeting the rapid cooling effect generated by the solidification contact with the hot spot 3 of the casting, and saving the production input cost.
[0023] The surface of the cooling fin main body 1 needs to be brushed with alcohol-based coating. Before use, shot blasting is used to remove rust, water and oil, and the surface attachments are polished smoothly.
[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A thin shell casting cooling fin structure, comprising a cooling fin body (1), a casting (6) and a casting heat node (3), characterized in that: The cooling fin body (1) is in the shape of a quadrangular pyramid, and the bottom surface of the cooling fin body (1) on the side with a smaller pyramid area is in contact with the top of the casting hot spot (3).
2. A thin shell casting cooling fin structure according to claim 1, characterized in that: The cooling fin body (1) is provided with a plurality of through-holes (2) for heat dissipation.
3. A thin shell casting cooling fin structure according to claim 2, characterized in that: A pressure groove (4) is provided at the bottom of the cooling fin body (1).
4. A thin shell casting cooling fin structure according to claim 3, characterized in that: The outer surface of the cooling fin body (1) is fixedly sleeved with a sand box (7), the interior of the sand box (7) is provided with molding sand (8), the top of the casting (6) is connected to a riser (5), and the cooling fin body (1) is tightly fitted into the mold cavity.
5. A thin shell casting cooling fin structure according to claim 4, characterized in that: The cooling fin body (1) is designed to be flat.
6. A thin shell casting cooling fin structure according to claim 5, characterized in that: The surface of the cooling fin body (1) needs to be painted with alcohol-based paint.