A continuous gating system for improving slurry hole defects in casting structures
By improving the gating structure to a continuous gating system and optimizing the flow path, the turbulence problem caused by segmented gating systems was solved, thereby improving the quality and production efficiency of metal casting products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANYANG FEILONG AUTOMOBILE PARTS CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, the segmented gating structure causes the molten metal to converge at the joints, forming turbulence, which produces slurry defects, affects product quality, and increases the scrap rate.
The continuous gating structure is adopted, which consists of a continuous molten metal transport channel composed of a vertical gating, a main gating, a horizontal gating, a bottom ingate, and a bottom horizontal gating. Combined with a flared port design, the flow path of the molten metal is optimized to avoid abrupt changes in flow direction and convergence.
It effectively eliminates turbulence, reduces slurry defects, improves product quality, and reduces scrap rate.
Smart Images
Figure CN224574635U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal casting technology, and in particular to a casting structure with a continuous gating system to improve slurry defects. Background Technology
[0002] The shortcomings of existing technologies are as follows: Figure 6 As shown, its design flaws are mainly reflected in the segmented structure of the gating system, which divides the gating into upper and lower sections. During the filling process, the molten metal flows through the upper and lower sections of the gating successively. When the molten metal reaches the connection point, due to the deviation of the flow direction, a convergence phenomenon occurs at the connection point of the upper and lower ends. This discontinuous flow not only forms turbulence, but also generates obvious turbulence in the convergence area. The continuous effect of turbulence will cause slag to accumulate at the corner, forming a slag retention area, and finally forming porosity and slag inclusion defects on the surface of the casting, which seriously affects product quality and increases the scrap rate. Utility Model Content
[0003] The purpose of this utility model is to provide a continuous gating channel for improving the slurry slag hole defect, so as to solve the problems of slurry slag hole accumulation and large amount of rework.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a continuous gating system for improving slurry defects, comprising a gating gate, a gating system, a riser, and a cavity. The gating gate is located at the top of the overall structure. The gating system comprises a vertical gating system, a main gating system, a horizontal gating system, a bottom inner gating system, and a bottom horizontal gating system. The system is characterized by: the lower end of the gating gate being connected to the vertical gating system; the vertical gating system being connected to a cross gating system; the cross gating system being composed of the main gating system and the horizontal horizontal gating system; there are two cross gating systems; the two cross gating systems are connected by a bottom inner gating system; and the bottom inner gating system is used for the flow of molten metal.
[0005] Optionally, the output ends of the two cross runners are connected to cavities, the cavities are connected to the horizontal runners of the cross runners, and cylindrical risers are provided between the horizontal runners and the cavities.
[0006] Optionally, the bottom ingate is connected to the main gating of the cross-shaped runner to form a continuous molten metal transport channel.
[0007] Optionally, bottom runners are provided on both sides of the bottom ingate, and two bottom runners are arranged in parallel. The bottom runners are connected to the bottom of the cavity, and a square riser is connected between the tops of the two cavities.
[0008] Optionally, the molten metal flows through a vertical gating system, a main gating system, a bottom ingate, and a main gating system. The bottom ingate has symmetrically arranged bottom horizontal gating systems on both sides, and the bottom horizontal gating systems are connected to the bottom of the cavity.
[0009] Optionally, horizontal runners are symmetrically arranged on both sides of the main runner, with one end of the main runner connected to the bottom end of the vertical runner and the other end connected to the bottom inner runner.
[0010] Optionally, the port connecting the bottom runner to the cavity is configured as a horn-shaped port to slow down the flow rate of the molten metal.
[0011] Optionally, edge risers are provided at both ends of the cavity.
[0012] The technical effects and advantages of this utility model are as follows:
[0013] This invention replaces the existing segmented gating structure with a continuous gating structure, avoiding the convergence and collision of molten metals flowing in different directions at corner positions. This effectively eliminates the problem of turbulence caused by abrupt changes in flow direction at the connection of traditional gating systems, thus reducing the probability of turbulence. Furthermore, the design of the trumpet-shaped port of the bottom horizontal gating optimizes the structure of the ingate, further reducing the impact force when molten metal enters the mold cavity and enhancing the slag-avoiding effect of the gating system. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the casting structure of this utility model.
[0016] Figure 3 This is a top view schematic diagram of the flow direction of molten metal in the casting structure of this utility model.
[0017] Figure 4 This is a side view schematic diagram of the flow direction of molten metal in the casting structure of this utility model.
[0018] Figure 5 This is a partial enlarged view of the bottom gating system of this utility model.
[0019] Figure 6 A side view of the flow direction of molten metal in a cast structure using existing technology.
[0020] In the diagram: 1. Gate; 2. Vertical runner; 3. Main runner; 4. Horizontal runner; 5. Bottom runner; 6. Bottom ingate; 7. Square riser; 8. Edge riser; 9. Cylindrical riser; 10. Trumpet-shaped port; 11. Cavity. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] This utility model provides, for example Figures 1 to 6 The technical solution shown is a continuous gating system for improving slurry defects, comprising a gating gate 1, a gating system, a riser, and a cavity 11. The gating gate 1 is located at the top of the overall structure. The gating system consists of a vertical gating system 2, a main gating system 3, a horizontal gating system 4, a bottom ingate 6, and a bottom horizontal gating system 5. The gating gate 1 is characterized by its lower end being connected to the vertical gating system 2. The vertical gating system 2 is connected to a cross gating channel, which is composed of the main gating system 3 and the horizontal horizontal gating system 4. There are two cross gating channels, which are connected by the bottom ingate 6. The bottom ingate 6 is used for the flow of molten metal.
[0023] Reference Appendix Figure 4 The lower end of the gate 1 is connected to the vertical runner 2, which extends into a cross-shaped runner structure. The cross-shaped runner consists of a main runner 3 and a horizontal runner 4, with a total of two runners. The two runners are connected by the bottom inner runner 6 to allow the molten metal to flow.
[0024] The output ends of the two cross runners are connected to cavities 11, and the cavities 11 are connected to the horizontal runners 4 of the cross runners. A cylindrical riser 9 is provided between the horizontal runners 4 and the cavities 11.
[0025] The bottom inner gating 6 is connected to the main gating 3 of the cross-shaped runner, forming a continuous molten metal transport channel.
[0026] The cylindrical riser 9 is located at the intersection of the horizontal runner 4 and the cavity 11. After the molten metal flows to the intersection of the horizontal runner 4 and the main runner 3, it begins to disperse and flow to the horizontal runners 4 on both sides and the bottom ingate 6 respectively.
[0027] Bottom ingate 6 has two bottom horizontal runners 5 on both sides. The bottom horizontal runners 5 are arranged in parallel and are connected to the bottom of the cavity 11. A square riser 7 is connected between the tops of the two cavities 11.
[0028] The molten metal flows through the vertical gating 2, the main gating 3, the bottom ingate 6, and the main gating 3. The bottom ingate 6 is symmetrically provided with bottom horizontal gating 5 on both sides, and the bottom horizontal gating 5 is connected to the bottom of the cavity 11.
[0029] After the molten metal is initially filled into the mold through the vertical gating 2, it is diverted and guided through the main gating 3, and then forms a stable flow path along the bottom ingate 6. The bottom ingate 6 is symmetrically provided with bottom horizontal gating 5 on both sides and connected to the bottom of the cavity 11. The speed of the molten metal is slowed down by the gradient change of the cross-sectional area to avoid direct impact on the cavity 11.
[0030] A horizontal gating channel 4 is symmetrically arranged on both sides of the main gating channel 3. One end of the main gating channel 3 is connected to the bottom end of the vertical gating channel 2, and the other end is connected to the bottom inner gating channel 6.
[0031] The port of the bottom horizontal runner 5 that connects to the cavity is set as a horn-shaped port 10 to slow down the flow rate of the molten metal.
[0032] The horn-shaped port 10 adopts an optimized internal gate structure to slow down the flow rate of the molten metal and reduce the impact force on the cavity 11 when the molten metal flows in.
[0033] Edge risers 8 are provided at both ends of the cavity 11.
[0034] The following description, in conjunction with a preferred embodiment, illustrates the content involved in the above embodiments.
[0035] After the molten metal is vertically injected from the gate 1, it continues to flow downwards along the vertical runner 2. When the molten metal reaches the bottom of the vertical runner 2, it smoothly transitions to the horizontally set main runner 3, and the flow direction changes from vertical to horizontal. Inside the main runner 3, the molten metal flows in two paths: the main part extends to both sides through the horizontal runner 4 and finally injects into the cylindrical riser 9 to complete the first molten metal filling of the cavity 11; the other part flows slowly down through the bottom ingate 6. After reaching the bottom ingate 6, it is diverted again by the two bottom runners 5 to complete the second molten metal filling of the cavity 11. When it passes through the flared port 10, the flow channel cross section gradually expands, and the flow velocity is effectively buffered before it is smoothly injected into the cavity. Part of the molten metal continues to flow along the direction of the bottom ingate 6 to another section of the main runner 3, then flows into the horizontal runner 4 and injects into the cylindrical riser 9 to fill the cavity. Throughout the process, the molten metal maintains a fixed flow path within the continuous runner system, effectively avoiding the abrupt changes and confluence phenomena that occur in traditional structures.
[0036] This invention replaces the existing segmented gating structure with a continuous gating structure, avoiding the convergence and collision of molten metals flowing in different directions at corner positions. This effectively eliminates the problem of turbulence caused by abrupt changes in flow direction at the connection of traditional gating systems, thus reducing the probability of turbulence. Furthermore, the design of the trumpet-shaped port of the bottom horizontal gating optimizes the structure of the ingate, further reducing the impact force when molten metal enters the mold cavity and enhancing the slag-avoiding effect of the gating system.
[0037] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0038] The specific embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A continuous gating system for improving slurry pore defects, comprising a gating gate (1), a gating system, a riser, and a cavity (11), wherein the gating gate (1) is located at the top of the overall structure, and the gating system comprises a vertical gating system (2), a main gating system (3), a horizontal gating system (4), a bottom inner gating system (6), and a bottom horizontal gating system (5), characterized in that, include: The lower end of the gate (1) is connected to the vertical runner (2), which is connected to a cross runner. The cross runner consists of a main runner (3) and a horizontal runner (4). There are two cross runners, which are connected by a bottom ingate (6). The bottom ingate (6) is used for the flow of molten metal.
2. A continuous gate runner for improving the gate and slug eye defects of a cast structure according to claim 1, characterized in that: The output ends of the two cross runners are connected to cavities (11), the cavities (11) are connected to the horizontal runners (4) of the cross runners, and a cylindrical riser (9) is provided between the horizontal runners (4) and the cavities (11).
3. A continuous gate runner for improving the gate and slug eye defects of a cast structure according to claim 2, characterized in that: The bottom inlet gate (6) is connected to the main gate gate (3) of the cross runner to form a continuous molten metal transport channel.
4. A continuous gate runner for improving the gate and slug eye defects of a cast structure according to claim 3, characterized in that: Bottom ingate (6) is provided with bottom horizontal runners (5) on both sides. The bottom horizontal runners (5) are arranged in parallel as two lines. The bottom horizontal runners (5) are connected to the bottom of the cavity (11). A square riser (7) is connected between the tops of the two cavities (11).
5. A continuous gate runner for improving the gate and slug eye defects of a cast structure as claimed in claim 4, wherein: The molten metal flows through the vertical gating channel (2), the main gating channel (3), the bottom ingate channel (6), and the main gating channel (3). The bottom ingate channel (6) is symmetrically provided with bottom horizontal gating channels (5) on both sides, and the bottom horizontal gating channels (5) are connected to the bottom of the cavity (11).
6. A continuous gate runner for improving the gate and slug eye defects of a cast structure as claimed in claim 5, wherein: A horizontal gating channel (4) is symmetrically arranged on both sides of the main gating channel (3). One end of the main gating channel (3) is connected to the bottom end of the vertical gating channel (2), and the other end is connected to the bottom inner gating channel (6).
7. A continuous gate runner for improving the gate and slug eye defects of a cast structure as claimed in claim 6, wherein: The port of the bottom horizontal runner (5) that connects to the cavity is set as a horn-shaped port (10) to slow down the flow rate of the molten metal.
8. A continuous gate runner improving the gate and slug eye defects of a casting structure according to claim 7, characterized in that: Edge risers (8) are provided at both ends of the cavity (11).