A gating system

Abstract

The utility model provides a kind of pouring system, belong to preparation technical field. Including: sprue, it includes the first straight section with the second straight section of first vertical direction extension, and the second straight section is communicated and is provided with the bend section between first straight section;Anti-impact part, it includes the anti-impact cavity of second straight section connection arrangement, the bottom of anti-impact cavity is provided with refractory part, and the both sides of anti-impact cavity are respectively communicated and provided with the cross gate, and the filter part is arranged in cross gate;Inner gate, it is communicated and arranged with cross gate, and inner gate is used to be communicated with cavity;Advantage is that molten iron enters bend section after first straight section, can smoothly transition to second straight section, effectively reduce flow rate and improve flow state;The setting of anti-impact cavity and refractory part can prevent high-temperature molten iron from directly impacting sand, avoid causing sand mould damage or sand particle drop, significantly improve mould service life and casting surface quality.

Description

Technical Field

[0001] This utility model belongs to the field of preparation technology, and in particular relates to a casting system. Background Technology

[0002] In the casting production process, the design of the gating system has a significant impact on casting quality, yield, and mold life. Traditional gating systems typically include sprues, runners, ingates, and filtration devices. Their main function is to smoothly and efficiently introduce molten metal into the casting cavity, while minimizing the impact of molten iron on the sand mold to prevent casting defects such as sand inclusions, porosity, and shrinkage.

[0003] However, in practical applications, traditional gating systems still have many shortcomings. For example, when molten iron flows through the sprue into the runner or cavity, the high flow velocity can easily cause a strong impact on the sand mold, leading to sand particles falling off, cavity damage, and consequently affecting the surface quality and internal structure of the casting. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a casting system that reduces sand mold impact.

[0005] The objective of this utility model can be achieved through the following technical solution: a casting system, comprising:

[0006] A straight pouring channel includes a first straight section and a second straight section extending in a vertical direction, with a curved section connecting the first straight section and the second straight section;

[0007] The anti-impact section includes an anti-impact cavity connected to the second straight section, a fire-resistant section at the bottom of the anti-impact cavity, and transverse pouring channels connected to both sides of the anti-impact cavity, with a filter section provided inside the transverse pouring channel.

[0008] An ingate is provided in communication with the runner, and the ingate is used to connect with the cavity.

[0009] In one of the above-mentioned casting systems, an anti-erosion sand block is provided at the bottom of the second straight section. The anti-erosion sand block has an anti-erosion cavity with an opening at the bottom. The upper end of the anti-erosion cavity is connected to the second straight section, and the two ends of the anti-erosion cavity are respectively connected to the horizontal sprue. The refractory part is provided at the bottom opening of the anti-erosion cavity, and the refractory part can achieve full coverage of the bottom opening.

[0010] In one of the above-mentioned casting systems, the anti-erosion sand blocks are made of coated sand.

[0011] In one of the above-mentioned casting systems, on a plane perpendicular to the flow direction of the anti-impact cavity, the cross-section of the anti-impact cavity is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base of the isosceles trapezoid.

[0012] In one of the above-mentioned casting systems, buffer chambers are symmetrically connected on both sides of the anti-impact cavity. In the horizontal direction, the extension direction of the buffer chamber is not in the same straight line as the extension direction of the horizontal runner.

[0013] In one of the above-mentioned casting systems, the horizontal runner includes a first flow chamber and a second flow chamber, and a filter chamber is provided between the first flow chamber and the second flow chamber, and a filter section is provided in the filter chamber.

[0014] In one of the casting systems described above, the vertical cross-sectional shape of the filter cavity is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base.

[0015] In one of the above-described casting systems, the filter section is located in the middle of the cavity in the vertical direction.

[0016] In the above-mentioned gating system, there are multiple ingates, and each ingate is used to connect with the cavity. The multiple ingates are divided into two groups, and the two groups of ingates are symmetrically arranged on both sides of the second straight section.

[0017] In one of the above-mentioned casting systems, a pouring cup is provided at the top of the first straight section, and the bottom of the pouring cup is connected to the first straight section through a ceramic tube.

[0018] Compared with existing technologies, the beneficial effects of this utility model are as follows: After molten iron enters the curved section from the first straight section, it can smoothly transition to the second straight section, effectively reducing the flow rate and improving the flow state; the anti-impact cavity and refractory section prevent high-temperature molten iron from directly impacting the molding sand, avoiding damage to the sand mold or sand particle shedding, significantly improving the service life of the mold and the surface quality of the casting; the filter section in the runner can further remove impurities from the molten iron, improving the internal density of the casting and the yield; the ingate is connected to the runner, allowing the molten iron, after sufficient buffering and filtration, to smoothly fill the mold cavity, reducing casting defects such as porosity and slag inclusions. The overall structural layout is reasonable, improving the stability and safety of the casting process, and is suitable for the high-quality production needs of complex castings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the distribution structure of the gating system;

[0020] Figure 2 yes Figure 1 Another perspective structural diagram;

[0021] Figure 3 yes Figure 1 Another perspective structural diagram;

[0022] Figure 4 yes Figure 1 Schematic diagram of the refractory section.

[0023] In the diagram, 100 is the first straight section; 101 is the second straight section; 102 is the curved section; 200 is the anti-impact section; 201 is the anti-impact cavity; 202 is the refractory section; 203 is the buffer cavity; 300 is the ingate; 400 is the runner; 401 is the first flow chamber; 402 is the second flow chamber; and 403 is the filter chamber. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] like Figures 1-4 As shown, a casting system includes:

[0027] A straight pouring channel includes a first straight section 100 and a second straight section 101 extending in a vertical direction, with a curved section 102 connecting the first straight section 100 and the second straight section 101.

[0028] The anti-impact section 200 includes an anti-impact cavity 201 connected to the second straight section 101. A fire-resistant section 202 is provided at the bottom of the anti-impact cavity 201. Horizontal pouring channels 400 are respectively connected to both sides of the anti-impact cavity 201. A filter section is provided inside the horizontal pouring channel 400.

[0029] The ingate 300 is connected to the runner 400 and is used to connect with the cavity.

[0030] In this embodiment, after the molten iron enters the curved section 102 from the first straight section 100, it can smoothly transition to the second straight section 101, effectively reducing the flow rate and improving the flow state. The anti-impact cavity 201 and the refractory section 202 prevent the high-temperature molten iron from directly impacting the molding sand, avoiding damage to the sand mold or sand particle shedding, significantly improving the mold's service life and the surface quality of the casting. The filter section in the runner 400 can further remove impurities from the molten iron, improving the internal density of the casting and the yield. The ingate 300 is connected to the runner 400, allowing the molten iron, after sufficient buffering and filtration, to smoothly fill the mold cavity, reducing casting defects such as porosity and slag inclusions. The overall structural layout is reasonable, improving the stability and safety of the casting process, and is suitable for the high-quality production needs of complex castings.

[0031] Specifically, the bottom of the second straight section 101 is provided with an anti-erosion sand block, and the anti-erosion sand block is provided with an anti-erosion cavity 201 with an opening at the bottom. The upper end of the anti-erosion cavity 201 is connected to the second straight section 101, and the two ends of the anti-erosion cavity 201 are respectively connected to the horizontal gating 400. The refractory part 202 is provided at the bottom opening of the anti-erosion cavity 201, and the refractory part 202 can achieve full coverage of the bottom opening.

[0032] Further specifying, the material of the anti-erosion sand block is coated sand, and the refractory part 202 is the existing refractory brick.

[0033] The anti-erosion sand blocks made of coated sand material not only have good structural strength and formability, but also excellent high temperature resistance and collapse resistance. They can maintain structural stability during the impact of molten iron and effectively prevent damage caused by uneven local heating or erosion.

[0034] Furthermore, on a plane perpendicular to the flow direction of the anti-impact cavity 201, the cross-section of the anti-impact cavity 201 is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base of the isosceles trapezoid.

[0035] like Figure 4 As shown, in the horizontal direction, the two ends of the anti-impact cavity 201 are interconnected, and in the vertical direction, the bottom of the anti-impact cavity 201 is provided with an opening. The anti-impact cavity 201 presents a shape that gradually expands from top to bottom in the direction of molten iron flow. This structure can provide additional guiding effect when molten iron enters the anti-impact cavity 201, guiding the molten iron to flow along a predetermined path and reducing turbulence and unnecessary turbulence.

[0036] As the anti-impact cavity 201 gradually widens from top to bottom, the flow rate of molten iron naturally slows down during this process, which helps to achieve a more uniform flow rate distribution. Because the bottom width is greater than the top width, the molten iron can spread out at a more gentle speed, thereby reducing the direct impact on the horizontal sprue 400 and subsequent sand molds.

[0037] In a further preferred embodiment, buffer chambers 203 are symmetrically connected to both sides of the anti-impact cavity 201. The molten iron undergoes an additional buffering process before entering the runner 400, further reducing the flow velocity and effectively dispersing its kinetic energy, thus reducing direct impact on the runner 400 and its connecting structures. Horizontally, the extension direction of the buffer chamber 203 is not in the same straight line as the length extension direction of the runner 400; that is, the buffer chamber 203 is bent relative to the runner 400. This requires the molten iron to change its flow direction before entering the runner 400, reducing the possibility of turbulence and improving the fluid stability of the entire system. Simultaneously, the non-linear extension direction of the buffer chamber 203 increases the complexity of the molten iron path, which helps promote the separation of inclusions and gases, improving the internal quality of the casting.

[0038] Specifically, the horizontal runner 400 includes a first flow chamber 401 and a second flow chamber 402. A filter chamber 403 is provided between the first flow chamber 401 and the second flow chamber 402, and a filter section is provided inside the filter chamber 403.

[0039] After flowing out of the anti-impact chamber 201, the molten iron first enters the first flow chamber 401, where it undergoes initial distribution and flow direction adjustment. It then enters the filter chamber 403 for impurity filtration, and finally flows into the second flow chamber 402, where the flow is further stabilized and evenly distributed to the multiple ingates 300. By centralizing the filtration section in the independent filter chamber 403, the molten iron experiences a relatively stable flow rate and a longer residence time, which facilitates the effective interception and removal of impurities, significantly improving the purity of the molten iron. This reduces defects such as inclusions and porosity within the casting, thereby enhancing the density and mechanical properties of the casting.

[0040] The filter chamber 403 is arranged as an independent structural unit between the first flow chamber 401 and the second flow chamber 402, which not only facilitates the installation of filter materials of different specifications (such as ceramic foam filters, mesh ceramic filters, etc.),

[0041] Furthermore, the vertical cross-sectional shape of the filter cavity 403 is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base.

[0042] The filter chamber 403 has a cross-section that is wider at the top and narrower at the bottom in the vertical direction. When molten iron enters the filter chamber 403 from above, it first encounters the wider area (i.e., the upper bottom), which helps to disperse the molten iron flow, slow down its flow rate, and play a good buffering role. As the molten iron flows downward and gradually narrows to the narrower bottom area (i.e., the lower bottom), it can promote more uniform passage of molten iron through the filter, thereby achieving more effective impurity filtration.

[0043] Preferably, the filter section is located in the middle of the mold cavity in the vertical direction. This helps to even out the pressure distribution when molten iron enters the mold cavity from the runner 400. This layout can avoid pressure shock problems caused by the filter being too high, ensuring that the molten iron can fill the entire mold cavity evenly and smoothly, reducing the possibility of defects such as porosity and shrinkage porosity inside the casting.

[0044] Specifically, there are multiple ingates 300, and all ingates 300 are used to connect with the cavity. The multiple ingates 300 are divided into two groups, and the two groups of ingates 300 are symmetrically arranged on both sides of the second straight section 101.

[0045] By grouping multiple ingates 300 and symmetrically arranging them on both sides of the second straight section 101, it can be ensured that molten iron can enter the cavity evenly from all directions, which helps to achieve simultaneous filling of all parts of the casting and avoids uneven filling caused by unilateral feeding, thereby reducing the occurrence of casting defects such as cold shuts and segregation.

[0046] Further specifying, a pouring cup is provided at the top of the first straight section 100, and the bottom of the pouring cup is connected to the first straight section 100 via a ceramic tube. The presence of the pouring cup allows the molten iron to be initially buffered and stabilized in a relatively spacious area, reducing the impact of direct impact on subsequent channels. This prevents molten iron from splashing and forming eddies, ensuring that the molten iron enters the first straight section 100 smoothly.

[0047] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0049] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A casting system, characterized in that, include: A straight pouring channel includes a first straight section and a second straight section extending in a vertical direction, with a curved section connecting the first straight section and the second straight section; The anti-impact section includes an anti-impact cavity connected to the second straight section, a fire-resistant section at the bottom of the anti-impact cavity, and transverse pouring channels connected to both sides of the anti-impact cavity, with a filter section provided inside the transverse pouring channel. An ingate is provided in communication with the runner, and the ingate is used to connect with the cavity.

2. The casting system according to claim 1, characterized in that, The bottom of the second straight section is provided with an anti-erosion sand block, and the anti-erosion sand block is provided with an anti-erosion cavity with an opening at the bottom. The upper end of the anti-erosion cavity is connected to the second straight section, and the two ends of the anti-erosion cavity are respectively connected to the horizontal pouring channel. The refractory part is provided at the bottom opening of the anti-erosion cavity, and the refractory part can achieve full coverage of the bottom opening.

3. A casting system according to claim 2, characterized in that, The anti-erosion sand block is made of coated sand.

4. A casting system according to claim 1, characterized in that, On a plane perpendicular to the flow direction of the anti-impact cavity, the cross-section of the anti-impact cavity is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base of the isosceles trapezoid.

5. A casting system according to claim 1, characterized in that, The anti-impact cavity has symmetrically connected buffer cavities on both sides. In the horizontal direction, the extension direction of the buffer cavities is not in the same straight line as the extension direction of the horizontal runner.

6. A casting system according to claim 1, characterized in that, The horizontal runner includes a first flow chamber and a second flow chamber, and a filter chamber is provided between the first flow chamber and the second flow chamber, and a filter section is provided in the filter chamber.

7. A casting system according to claim 6, characterized in that, The vertical cross-sectional shape of the filter cavity is an isosceles trapezoid, and the length of the upper base of the isosceles trapezoid is greater than the length of the lower base.

8. A casting system according to claim 6, characterized in that, In the vertical direction, the filter section is located in the middle of the cavity.

9. A casting system according to claim 1, characterized in that, The number of ingates is multiple, and each ingate is used to connect with the cavity. The multiple ingates are divided into two groups, and the two groups of ingates are symmetrically arranged on both sides of the second straight section.

10. A casting system according to claim 1, characterized in that, A pouring cup is provided at the top of the first straight section, and the bottom of the pouring cup is connected to the first straight section through a ceramic tube.

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