Low-pressure casting gating system
By setting up a retractable riser and a radial runner in the low-pressure casting casting system, combined with cooling iron cooling and thermal conduction technology, the problem of insufficient heat dissipation when the casting solidifies is solved, the casting is fully filled and defect compensation is achieved, and the casting is improved. Casting quality and mold life.
Patent Information
- Application Number
- CN202323612689.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The existing low-pressure casting system lacks a replenishment riser when the castings solidify, resulting in heat not being able to dissipate smoothly, causing locally too fast solidification, causing internal defects such as shrinkage and shrinkage.
Set up a retractable riser and radial runner in the low-pressure casting casting system, combining cooling iron cooling technology to ensure that the casting is fully filled and compensate for shrinkage hole shrinkage defects, provide better liquid metal flow path, and pass through thermal rods And high-temperature coatings improve the heat dissipation performance and life of the mold.
It effectively avoids shrinkage holes and shrinkage defects caused by excessively fast solidification, improves the quality and overall performance of the casting, reduces the thermal stress and thermal fatigue of the mold, and extends the service life of the mold.
Smart Images
Figure CN222221113U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting and pouring, in particular to a low-pressure casting and pouring system. Background Art
[0002] The existing casting pouring system is to process the workpiece by combining the furnace and the mold, and to pour the molten metal in the furnace into the mold to complete the pouring of the workpiece. However, the existing mold is not provided with a shrinkage feed riser. When the casting solidifies, the heat cannot be dissipated smoothly, resulting in local over-rapid solidification, thereby causing shrinkage holes and shrinkage porosity and other internal defects of the casting. For example, a Chinese patent discloses a "low-pressure casting mold pouring system" with an application number of "201821588807.1". This device includes a gate for injecting molten metal, a gate connecting the gate and the mold, and a mold mold. The runner of the cavity and the water cooling ring arranged next to the flow-blocking section, the water cooling ring is connected to the cooling control system of the low-pressure casting equipment. Through the special design of the mold gate area and the adjustable cooling design, the runner can be disconnected within the controlled time, thereby preventing the molten metal from flowing back into the runner. While shortening the holding time, the time for heat transfer from the liquid metal to the mold is reduced. However, when it is used, there is no shrinkage feed riser on the mold. When the casting solidifies, the heat cannot be dissipated smoothly, resulting in local excessive solidification, thereby causing internal defects of the casting such as shrinkage cavities and shrinkage porosity. Utility Model Content
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a low-pressure casting pouring system. By arranging a shrinkage-compensating riser at the top and connecting a radial cross runner at the bottom, it is possible to fully ensure that the casting is filled and compensate for defects such as shrinkage cavities and shrinkage. During the solidification process of the casting, the volume of shrinkage cavities and shrinkage cavities is supplemented to ensure that the casting is fully filled and the generation of defects is reduced. A better liquid metal flow path can be provided for the casting, which helps to remove the gas and slag generated during the casting process. By arranging cooling iron quenching, the casting in thick and large parts can be sequentially solidified, ensuring that the temperature gradient inside the casting is gradually reduced, and avoiding defects such as shrinkage cavities and shrinkage caused by too rapid solidification. This helps to improve the quality and overall performance of the casting, and can reduce the thermal stress and thermal fatigue of the mold during the casting process, thereby extending the service life of the mold.
[0004] The utility model also provides the above-mentioned low-pressure casting pouring system, including: a base, the upper surface of the base is provided with a slot, the inner surface of the slot is movably connected with a mold, the mold is provided with a gate, the upper surface of the base is provided with a cross runner, the shape of the cross runner is radial, the cross runner is located inside the mold, the upper surface of the mold is provided with a shrinkage compensation riser, the upper surface of the base is fixedly connected with a fixing frame, the upper surface of the fixing frame is fixedly connected with a cooling iron, through the above components, it can fully ensure that the casting is filled and the shrinkage cavity and shrinkage are compensated, and the generation of defects can be reduced.
[0005] According to the low-pressure casting pouring system described in the utility model, a heat-conducting rod is fixedly connected to the side surface of the mold, and the lower end of the heat-conducting rod is movably connected to the upper surface of the base. Through the above components, the heat dissipation area of the mold can be increased, which helps to quickly conduct and dissipate heat, thereby reducing the mold temperature, shortening the cooling time, and improving production efficiency.
[0006] According to the low-pressure casting pouring system described in the utility model, the inner surface of the mold is provided with a high-temperature coating, and the material of the high-temperature coating is ceramic. Through the above components, the erosion of the mold surface by the molten metal can be prevented, thereby extending the life of the mold.
[0007] According to the low-pressure casting pouring system of the utility model, the side surface of the base is rotatably connected to the rotating shaft, and the side surface of the rotating shaft is fixedly connected to the bracket, and the bracket can be easily rotated through the above components.
[0008] According to the low-pressure casting pouring system described in the utility model, a clamping block is fixedly connected to the upper surface of the bracket, and the above components are used to clamp the clamping slot so that the mold is not easy to fall off.
[0009] According to the low-pressure casting pouring system described in the utility model, the side surface of the mold is provided with a groove, and the groove cooperates with the clamping block. Through the above components, it is convenient to clamp the clamping block and lock the mold and the base together.
[0010] According to the low-pressure casting pouring system described in the utility model, a mounting frame is fixedly connected to the lower surface of the base, and a mounting hole is provided on the mounting frame. Through the above components, the mold can be easily installed and fixed.
[0011] According to the low-pressure casting pouring system described in the utility model, an exhaust port is provided on the base, and an anti-leakage net is fixedly connected to the upper surface of the exhaust port, so that the exhaust inside the mold is convenient.
[0012] Beneficial Effects
[0013] 1. Compared with the prior art, the low-pressure casting pouring system can fully ensure the filling of the casting and compensate for defects such as shrinkage cavities and shrinkage by setting a shrinkage feed riser at the top and connecting a radial cross runner at the bottom. It can replenish the volume of shrinkage cavities and shrinkage cavities during the solidification process of the casting, ensure that the casting is fully filled, reduce the occurrence of defects, and provide a better liquid metal flow path for the casting, which helps to remove the gas and slag generated during the casting process.
[0014] 2. Compared with the prior art, the low-pressure casting pouring system, by setting up cooling iron quenching, can achieve sequential solidification of thick and large parts of the casting, ensure that the temperature gradient inside the casting gradually decreases, and avoid defects such as shrinkage cavities and shrinkage caused by too rapid solidification. This helps to improve the quality and overall performance of the casting, and can reduce the thermal stress and thermal fatigue of the mold during the casting process, thereby extending the service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0016] Figure 1 This is the main structural diagram of the low-pressure casting pouring system of the utility model;
[0017] Figure 2 It is a cross-sectional structural diagram of the low-pressure casting pouring system of the utility model;
[0018] Figure 3 It is a bottom view structural diagram of the low pressure casting pouring system of the utility model;
[0019] Figure 4 It is a left view structural diagram of the low-pressure casting pouring system of the utility model.
[0020] Legend:
[0021] 1. Gate; 2. Cooling iron; 3. Runner; 4. Mold; 5. Groove; 6. Block; 7. Bracket; 8. Rotating shaft; 9. Feeding riser; 10. Fixing frame; 11. Heat conducting rod; 12. Slot; 13. Base; 14. Anti-leakage net; 15. Exhaust port; 16. Mounting frame; 17. Mounting hole; 18. High temperature coating. DETAILED DESCRIPTION
[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0023] Reference Figure 1-4The low-pressure casting pouring system of the utility model embodiment includes: a base 13 for carrying a mold, a side surface of the base 13 is rotatably connected with a rotating shaft 8, a side surface of the rotating shaft 8 is fixedly connected with a bracket 7 for fixedly connecting a card block, an upper surface of the bracket 7 is fixedly connected with a card block 6 for clamping the card slot to fix it, a side surface of the mold 4 is provided with a groove 5, the groove 5 cooperates with the card block 6 to clamp the card block so that the mold and the base are not easy to fall off, a mounting frame 16 is fixedly connected to the lower surface of the base 13, and a mounting hole 17 is provided on the mounting frame 16 for installation and fixation, an exhaust port 15 is provided on the base 13, and an anti-leakage net 14 is fixedly connected to the upper surface of the exhaust port 15 for exhaust.
[0024] A card slot 12 is provided on the upper surface of the base 13 for inserting and fixing the mold, and the inner surface of the card slot 12 is movably connected to the mold 4, and a heat-conducting rod 11 is fixedly connected to the side surface of the mold 4. The lower end of the heat-conducting rod 11 is movably connected to the upper surface of the base 13, which is used to increase the heat dissipation area of the mold and make the heat dissipation faster. A high-temperature coating 18 is provided on the inner surface of the mold 4. The material of the high-temperature coating 18 is ceramic and is used to protect the mold. A gate 1 is provided on the mold 4, and a cross runner 3 is provided on the upper surface of the base 13. The shape of the cross runner 3 is radial and the cross runner 3 is located inside the mold 4. A shrinkage-feeding riser 9 is provided on the upper surface of the mold 4, and a fixing frame 10 is fixedly connected to the upper surface of the base 13. The upper surface of the fixing frame 10 is fixedly connected to the cooling iron 2.
[0025] Working principle: When in use, it is necessary to connect the base 13 and the mold 4, insert the bottom of the mold 4 into the slot 12 on the base 13, rotate the bracket 7 to rotate the shaft 8, so that the block 6 on the bracket 7 can be inserted into the groove 5 on the mold 4, and the mold 4 is fixed to prevent accidental falling off during casting. Liquid metal can be injected into the mold 4 through the gate 1 for casting. During casting, the liquid metal will completely fill the interior of the mold 4 along the horizontal runner 3 to prevent the occurrence of defects. The shrinkage holes and shrinkage defects can be compensated by the shrinkage-filling riser 9.
[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. Low pressure casting pouring system, characterized in that: include: A base (13), wherein a slot (12) is provided on the upper surface of the base (13), the inner surface of the slot (12) is movably connected to a mold (4), the mold (4) is provided with a gate (1), the upper surface of the base (13) is provided with a runner (3), the shape of the runner (3) is radial, the runner (3) is located inside the mold (4), the upper surface of the mold (4) is provided with a shrinkage feeder (9), the upper surface of the base (13) is fixedly connected to a fixing frame (10), and the upper surface of the fixing frame (10) is fixedly connected to a cooling iron (2).
2. The low pressure casting pouring system according to claim 1, characterized in that: A heat-conducting rod (11) is fixedly connected to the side surface of the mold (4), and the lower end of the heat-conducting rod (11) is movably connected to the upper surface of the base (13).
3. The low pressure casting pouring system according to claim 1, characterized in that: The inner surface of the mold (4) is provided with a high-temperature coating (18), and the material of the high-temperature coating (18) is ceramic.
4. The low pressure casting pouring system according to claim 1, characterized in that: The side surface of the base (13) is rotatably connected to a rotating shaft (8), and the side surface of the rotating shaft (8) is fixedly connected to a bracket (7).
5. The low pressure casting pouring system according to claim 4, characterized in that: A clamping block (6) is fixedly connected to the upper surface of the bracket (7).
6. The low pressure casting pouring system according to claim 1, characterized in that: A groove (5) is provided on the side surface of the mold (4), and the groove (5) cooperates with a clamping block (6).
7. The low pressure casting pouring system according to claim 1, characterized in that: A mounting frame (16) is fixedly connected to the lower surface of the base (13), and a mounting hole (17) is provided on the mounting frame (16).
8. The low pressure casting pouring system according to claim 1, characterized in that: The base (13) is provided with an exhaust port (15), and the upper surface of the exhaust port (15) is fixedly connected with an anti-leakage net (14).