CN219112807U - Valve body is wax module tree structure for investment casting - Google Patents
Valve body is wax module tree structure for investment casting Download PDFInfo
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- CN219112807U CN219112807U CN202222545780.0U CN202222545780U CN219112807U CN 219112807 U CN219112807 U CN 219112807U CN 202222545780 U CN202222545780 U CN 202222545780U CN 219112807 U CN219112807 U CN 219112807U
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Abstract
The utility model relates to a valve body wax pattern tree structure for investment casting, which comprises a valve body wax pattern, and a runner wax pattern system arranged above the valve body wax pattern, wherein the valve body wax pattern comprises a body belly, a middle opening flange and 2 side flanges, a blind riser wax pattern is arranged above the body belly, and a gap is arranged between the top of the blind riser wax pattern and the runner wax pattern system. The blind riser wax pattern is disconnected from the runner wax pattern system, so that molten steel can be shunted to the side during the subsequent molten steel pouring process, and can not directly impact the valve type shell downwards, thereby avoiding a series of problems caused by the direct impact of the molten steel on the valve type shell.
Description
Technical Field
The utility model belongs to the technical field of valve body investment casting, and particularly relates to a wax module tree structure for valve body investment casting.
Background
Valve bodies of valves (such as gate valves, stop valves, check valves, ball valves, butterfly valves, etc.) are typically cast by investment casting, which is also known as lost wax casting, and includes the steps of wax pressing, wax trimming, tree grouping, dipping, wax melting, casting molten metal, post-treatment, etc. The tree-assembling structure after the wax module tree seriously affects the quality of the casting; conventionally, as shown in fig. 1, a valve body wax pattern tree structure generally includes a valve body wax pattern 1 and a runner wax pattern system 2, wherein the runner wax pattern system 2 includes a third inner runner wax pattern 20 disposed above a body belly 3 of the valve body wax pattern 1, a first inner runner wax pattern 8 disposed above 2 side flanges 7, a second inner runner wax pattern 12 disposed above a sprue flange 19, a T-shaped runner wax pattern 14 connecting the 4 inner runner wax patterns, a pouring cup wax pattern 10 disposed above the T-shaped runner wax pattern 14, and an exhaust cup wax pattern 15 disposed above the second inner runner wax pattern 12; by adopting the traditional wax mould set tree structure, as the pouring cup wax mould 10 is communicated with the third inner pouring cup wax mould 20 through the T-shaped cross pouring wax mould 14, in the subsequent molten steel pouring process, after molten steel is poured, the valve type shell is directly impacted downwards, so that the damage of the formed shell is easy to generate, and when the molten steel directly impacts the valve type shell, molten steel is also easy to splash, thereby accelerating the oxidation and suction of the molten steel, and finally generating defects such as sand holes or air holes in the casting or on the surface, thereby influencing the quality of the valve body.
Disclosure of Invention
The utility model aims to overcome the defect that in the prior art, a pouring cup wax pattern is directly communicated with a third inner pouring gate wax pattern, so that molten steel directly impacts a shell in the subsequent process, and provides a wax pattern tree structure for valve body investment casting.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a valve body wax matrix tree structure for investment casting, includes the valve body wax matrix, set up in runner wax matrix system of valve body wax matrix top, the valve body wax matrix includes body tripe, well mouth flange and 2 side flanges, body tripe top is provided with the blind riser wax matrix, the top of blind riser wax matrix with be provided with the clearance between the runner wax matrix system.
As a preferable technical scheme, the top wall of the blind riser wax mould is provided with an inverted conical hole.
As a preferred embodiment, the blind riser wax pattern is connected to the runner wax pattern system by a first degassing wax bar.
As a preferred technical solution, the runner wax pattern system includes a first ingate wax pattern disposed above 2 side flanges, a first runner wax pattern disposed in the middle of the 2 first ingate wax patterns and integrally connected with the 2 first ingate wax patterns, and a pouring cup wax pattern disposed above the first runner wax pattern.
As a preferable technical scheme, two ends of the first exhaust wax stick are respectively connected with the blind riser wax mould and 1 first ingate wax mould.
As a preferable technical scheme, when the caliber of the cast valve body is smaller than DN150mm, the pouring gate wax pattern system further comprises a second inner pouring gate wax pattern arranged above the middle port flange, and a second pouring gate wax pattern connected with the first pouring gate wax pattern and the second inner pouring gate wax pattern, wherein the first pouring gate wax pattern and the second pouring gate wax pattern form a T-shaped pouring gate wax pattern.
As a preferable technical scheme, an exhaust cup wax pattern is arranged at the top of the second ingate wax pattern.
As a preferable technical scheme, when the caliber of the cast valve body is more than or equal to DN150mm, a ball riser wax pattern is arranged above the middle port flange, and an exhaust cup wax pattern is arranged above the ball riser wax pattern; and a shrinkage opening is formed at the joint of the ball riser wax pattern and the exhaust cup wax pattern.
As a preferable technical scheme, the necking is connected with the pouring cup wax mould through 2 second exhaust wax rods. As a preferable technical scheme, when the caliber of the cast valve body is less than DN150mm, the gap is 25-30 mm; when the caliber of the cast valve body is more than or equal to DN150mm, the gap is 30-40 mm.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the blind riser wax pattern is arranged above the body belly of the valve body wax pattern, and the gap is arranged between the blind riser wax pattern and the runner wax pattern system, so that the blind riser wax pattern is disconnected from the runner wax pattern system, and therefore, molten steel is not directly impacted downwards to the valve body shell but is shunted to the side along the transverse runner of the valve body shell to enter the valve body cavity in the subsequent molten steel pouring process, and a series of problems caused by direct impact of molten steel to the valve body cavity are avoided.
Drawings
FIG. 1 is a perspective view of the prior art;
FIG. 2 is a schematic structural diagram of embodiment 1 of the present utility model;
FIG. 3 is a perspective view of embodiment 1 of the present utility model;
FIG. 4 is a perspective view of embodiment 2 of the present utility model;
fig. 5 is a perspective view of another angle of embodiment 2 of the present utility model.
In the figure: 1. valve body wax matrix, 2, runner wax matrix system, 3, body belly, 4, blind riser wax matrix, 5, back taper hole, 6, first exhaust wax stick, 7, side flange, 8, first ingate wax matrix, 9, first runner wax matrix, 10, pouring cup wax matrix, 11, clearance, 12, second ingate wax matrix, 13, second ingate wax matrix, 14, T-shaped ingate wax matrix, 15, exhaust cup wax matrix, 16, ball riser wax matrix, 17, necking, 18, second exhaust wax stick, 19, mid-port flange, 20, third ingate wax matrix.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The present utility model will be described in further detail with reference to the accompanying drawings.
Example 1:
an embodiment of a valve body investment casting wax pattern tree structure according to the utility model is shown in fig. 2-3 and is used for casting a valve body with caliber less than DN150mm, the valve body investment casting wax pattern tree structure comprises a valve body wax pattern 1, a runner wax pattern system 2 arranged above the valve body wax pattern 1, the valve body wax pattern 1 comprises a body belly 3, a middle opening flange 19 and 2 side flanges 7, a blind riser wax pattern 4 is arranged above the body belly 3, and a gap 11 is arranged between the top of the blind riser wax pattern 4 and the runner wax pattern system 2.
The gap 11 is 25-30 mm. According to the utility model, the blind riser wax pattern 4 is arranged above the body belly 3 of the valve body wax pattern 1, and the gap 11 is arranged between the blind riser wax pattern 4 and the runner wax pattern system 2, so that the blind riser wax pattern 4 is disconnected from the runner wax pattern system 2, and in the subsequent molten steel pouring process, molten steel does not directly impact the valve body shell downwards, but is split along the first transverse runner and the second transverse runner of the valve body shell to the side, and enters the valve body cavity through the side flange 7 and the middle port flange 19, so that a series of problems caused by direct impact of the molten steel on the valve body cavity are avoided.
As an embodiment of the valve body investment casting wax pattern tree structure, the runner wax pattern system 2 includes a first runner wax pattern 8 disposed above 2 side flanges 7, a first runner wax pattern 9 disposed in the middle of the 2 first runner wax patterns 8 and integrally connected to the 2 first runner wax patterns 8, and a tundish wax pattern 10 disposed above the first runner wax pattern 9.
The pouring gate wax pattern system 2 further comprises a second inner pouring gate wax pattern 12 arranged above the middle opening flange 19 of the valve body wax pattern 1, and a second transverse pouring gate wax pattern 13 connected with the first transverse pouring gate wax pattern 9 and the second inner pouring gate wax pattern 13, wherein the first transverse pouring gate wax pattern 9 and the second transverse pouring gate wax pattern 13 form a T-shaped transverse pouring gate wax pattern 14. In the subsequent pouring process, the first inner pouring gate wax pattern 8 and the second inner pouring gate wax pattern 13 can be used as pouring gates, and can also play a role of riser, feed the side flange and the middle port flange of the casting valve body, and improve the utilization rate of molten steel.
The top of the second ingate wax pattern 13 is provided with an exhaust cup wax pattern 15. The gas-discharging cup wax mould can form a gas-discharging cup in the subsequent process, and the gas can be discharged in the aspect of pouring molten steel.
As an embodiment of the wax module tree structure for investment casting of the valve body, the top wall of the blind riser wax mould 4 is provided with an inverted conical hole 5. According to the utility model, the inverted conical hole 5 is provided with a sharp angle structure, so that molten steel at the inverted conical hole part can be delayed to solidify and form a hole under the influence of sharp angle heat during solidification in the subsequent molten steel pouring process, thereby ensuring the feeding effect of a blind riser on a casting and effectively improving the feeding efficiency of the blind riser; in addition, the arrangement of the inverted cone-shaped hole 5 reduces the volume of the blind riser of the shell, so that the pressure of the blind riser to the casting is reduced, and the yield of the finished product is improved.
As an embodiment of the valve body investment casting wax pattern tree structure of the present utility model, the blind riser wax pattern 4 is connected to the runner wax pattern system 2 by a first exhaust wax bar 6. The first exhaust wax rod 6 is arranged, so that wax materials of the blind riser wax mould 4 can be smoothly discharged during dewaxing, and gas in the middle shell can be conveniently discharged through an exhaust channel formed by the first exhaust wax rod mould 6 in the casting process.
Two ends of the first exhaust wax rod 6 are respectively connected with the blind riser wax mould 4 and 1 first ingate wax mould 8.
Example 2:
an embodiment of a valve body investment casting wax pattern tree structure according to the utility model is shown in fig. 4-5 and is used for casting a valve body with a caliber of more than or equal to DN150mm, the valve body investment casting wax pattern tree structure comprises a valve body wax pattern 1, a pouring gate wax pattern system 2 arranged above the valve body wax pattern 1, the valve body wax pattern 1 comprises a body belly 3, a middle opening flange 19 and 2 side flanges 7, a blind riser wax pattern 4 is arranged above the body belly 3, and a gap 11 is arranged between the top of the blind riser wax pattern 4 and the pouring gate wax pattern system 2.
The gap 11 is 30-40 mm. According to the utility model, the blind riser wax pattern 4 is arranged above the body belly 3 of the valve body wax pattern 1, and the gap 11 is arranged between the blind riser wax pattern 4 and the runner wax pattern system 2, so that the blind riser wax pattern 4 is disconnected from the runner wax pattern system 2, and in the subsequent molten steel pouring process, molten steel is not directly impacted downwards to the valve body shell, but is split along the first transverse runner to the side, and enters the valve body cavity through the side flange 7, so that a series of problems caused by direct impact of the molten steel to the valve body cavity are avoided.
As an embodiment of the valve body investment casting wax pattern tree structure, the runner wax pattern system 2 includes a first runner wax pattern 8 disposed above 2 side flanges 7, a first runner wax pattern 9 disposed in the middle of the 2 first runner wax patterns 8 and integrally connected to the 2 first runner wax patterns 8, and a tundish wax pattern 10 disposed above the first runner wax pattern 9. In the subsequent pouring process, the formed pouring gate of the first inner pouring gate wax mould can serve as a pouring gate, also can play a role of a riser, and can feed the side flange of the valve body, so that the utilization rate of molten steel is improved.
As one embodiment of the utility model, a ball riser wax pattern 16 is arranged above a middle opening flange 19 of the valve body wax pattern 1, and an exhaust cup wax pattern 15 is arranged above the ball riser wax pattern 16; the junction of the ball riser wax pattern 16 and the exhaust cup wax pattern 15 forms a constriction 17. The utility model sets the ball riser wax pattern, which forms the ball riser of the shell in the following process, improves the feeding efficiency of the flange at the middle opening of the casting in the casting process, and in addition, the setting of the ball riser wax pattern 16 is compared with the setting of the second ingate wax pattern 13 in the embodiment 1, and the second runner of the shell is omitted in the following casting process, thereby improving the utilization rate of molten steel. The gas-discharging cup formed in the subsequent process of the gas-discharging cup wax pattern 15 of the present utility model can discharge gas in terms of pouring molten steel.
As an example of a valve body investment casting wax pattern tree structure, the shrinkage 17 is connected with the pouring cup wax pattern 10 through 2 second exhaust wax bars 18. The second exhaust wax rod 18 is arranged, so that the wax materials of the blind riser wax mould 4 can be smoothly discharged during dewaxing, and the gas in the middle shell can be conveniently discharged through the exhaust channel formed by the first exhaust wax rod mould 6 in the casting process.
As an embodiment of the wax module tree structure for investment casting of the valve body, the top wall of the blind riser wax mould 4 is provided with an inverted conical hole 5. According to the utility model, the inverted conical hole 5 is in a sharp-angle structure, and in the subsequent molten steel pouring process, molten steel at the inverted conical hole part can be delayed to solidify and form holes under the influence of sharp-angle heat, so that the feeding effect of the blind riser of the shell on a casting is ensured, the feeding efficiency of the blind riser is effectively improved, in addition, the inverted conical hole 5 is arranged, the volume of the blind riser of the shell is reduced, the pressure of the blind riser on the casting is reduced, and the yield of a finished product is improved.
As an embodiment of the valve body investment casting wax pattern tree structure of the present utility model, the blind riser wax pattern 4 is connected to the runner wax pattern system 2 by a first exhaust wax bar 6. The first exhaust wax rod 6 is arranged, so that wax materials of the blind riser wax mould 4 can be smoothly discharged during dewaxing, and gas in the middle shell can be conveniently discharged through an exhaust channel formed by the first exhaust wax rod mould 6 in the casting process.
Two ends of the first exhaust wax rod 6 are respectively connected with the blind riser wax mould 4 and 1 first ingate wax mould 8.
The above described embodiments are only preferred examples of the utility model and are not exhaustive of the possible implementations of the utility model. Any obvious modifications thereof, which would be apparent to those skilled in the art without departing from the principles and spirit of the present utility model, should be considered to be included within the scope of the appended claims.
Claims (10)
1. The utility model provides a valve body wax matrix tree structure for investment casting, includes valve body wax matrix (1), set up in runner wax matrix system (2) of valve body wax matrix (1) top, valve body wax matrix (1) are including body tripe (3), well mouth flange (19) and 2 side flange (7), a serial communication port, body tripe (3) top is provided with blind riser wax matrix (4), the top of blind riser wax matrix (4) with be provided with clearance (11) between runner wax matrix system (2).
2. The wax pattern assembly tree structure for valve investment casting according to claim 1, wherein the top wall of the blind riser wax pattern (4) is provided with an inverted cone hole (5).
3. A valve body investment casting wax pattern tree structure in accordance with claim 1, wherein the blind riser wax pattern (4) is connected to the runner wax pattern system (2) by a first de-airing wax bar (6).
4. A valve body investment casting wax pattern tree structure as in any of claims 1-3, wherein the runner wax pattern system (2) comprises a first runner wax pattern (8) disposed above the 2 side flanges (7), a first runner wax pattern (9) disposed intermediate the 2 first runner wax patterns (8) and integrally connected to the 2 first runner wax patterns (8), and a tundish wax pattern (10) disposed above the first runner wax pattern (9).
5. A valve body investment casting wax pattern tree structure as claimed in claim 4, wherein the first exhaust wax bar (6) is connected to blind riser wax patterns (4) at each end thereof, and wherein 1 first ingate wax pattern (8) is provided.
6. A valve body investment casting wax pattern assembly tree structure as recited in claim 4, wherein,
when the caliber of the cast valve body is smaller than DN150mm, the pouring gate wax mould system (2) further comprises a second pouring gate wax mould (12) arranged above the middle port flange (19), a second pouring gate wax mould (13) connected with the first pouring gate wax mould (9) and the second pouring gate wax mould (12), and the first pouring gate wax mould (9) and the second pouring gate wax mould (13) form a T-shaped pouring gate wax mould (14).
7. A valve body investment casting wax pattern assembly tree structure as recited in claim 6, wherein,
an exhaust cup wax pattern (15) is arranged at the top of the second ingate wax pattern (12).
8. A valve body investment casting wax pattern assembly tree structure as recited in claim 4, wherein,
when the caliber of the cast valve body is more than or equal to DN150mm, a ball riser wax mould (16) is arranged above the middle port flange (19), and an exhaust cup wax mould (15) is arranged above the ball riser wax mould (16); and a shrinkage opening (17) is formed at the joint of the ball riser wax pattern (16) and the exhaust cup wax pattern (15).
9. A valve body investment casting wax pattern tree structure in accordance with claim 8, wherein said shrinkage (17) is connected to said tundish wax pattern (10) by 2 second exhaust wax bars (18).
10. A valve body investment casting wax pattern assembly tree structure as recited in claim 1, wherein,
when the caliber of the cast valve body is less than DN150mm, the gap (11) is 25-30 mm;
when the caliber of the cast valve body is more than or equal to DN150mm, the gap (11) is 30-40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222545780.0U CN219112807U (en) | 2022-09-26 | 2022-09-26 | Valve body is wax module tree structure for investment casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222545780.0U CN219112807U (en) | 2022-09-26 | 2022-09-26 | Valve body is wax module tree structure for investment casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219112807U true CN219112807U (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222545780.0U Active CN219112807U (en) | 2022-09-26 | 2022-09-26 | Valve body is wax module tree structure for investment casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219112807U (en) |
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- 2022-09-26 CN CN202222545780.0U patent/CN219112807U/en active Active
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