CN220837817U - Upward ejection directional solidification casting system - Google Patents
Upward ejection directional solidification casting system Download PDFInfo
- Publication number
- CN220837817U CN220837817U CN202322472516.3U CN202322472516U CN220837817U CN 220837817 U CN220837817 U CN 220837817U CN 202322472516 U CN202322472516 U CN 202322472516U CN 220837817 U CN220837817 U CN 220837817U
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- China
- Prior art keywords
- mould shell
- directional solidification
- melting crucible
- upward
- ejection
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- 238000007711 solidification Methods 0.000 title claims abstract description 44
- 230000008023 solidification Effects 0.000 title claims abstract description 44
- 238000005266 casting Methods 0.000 title claims description 24
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 36
- 239000000956 alloy Substances 0.000 claims abstract description 36
- 230000008018 melting Effects 0.000 claims abstract description 34
- 238000002844 melting Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010899 nucleation Methods 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 239000011344 liquid material Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000009415 formwork Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 208000003351 Melanosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The utility model discloses an upward ejection directional solidification pouring system, which is used for ensuring that the directional solidification of metal in a mould shell along the gravity can be smoothly realized. The upward ejection directional solidification pouring system comprises a mould shell and a melting crucible, wherein a pouring gate and a crystal starting section of the mould shell are both positioned on a top chassis of the mould shell, a center column rod of the mould shell is a pouring channel of the mould shell, the melting crucible is arranged above the mould shell and is in butt joint communication with the pouring gate, and an alloy plug capable of being melted by alloy liquid in the melting crucible is arranged on a liquid outlet at the bottom of the melting crucible.
Description
Technical Field
The utility model belongs to the technical field of directional solidification, and particularly relates to an upward ejection directional solidification pouring system.
Background
In the traditional reverse gravity directional solidification, the die shell is pulled downwards to enter the cold chamber from the hot chamber to realize directional solidification, and the die shell is pulled upwards to enter the cold chamber from the hot chamber to realize directional solidification along the gravity directional solidification. For the high-temperature alloy, the directional solidification along the gravity changes the solidification direction, avoids the generation of convection in a pasty area, can fundamentally avoid the occurrence of freckle defects, and has great application value. Unlike conventional downward drawing directional solidification, upward ejection directional solidification changes solidification direction, and conventional downward drawing directional solidification forms are no longer applicable, so that corresponding melting materials and pouring systems are required to be designed according to pouring and solidification modes.
Disclosure of utility model
The utility model mainly aims to provide an upward ejection directional solidification pouring system so as to ensure that the directional solidification of metal in a mould shell along the gravity can be smoothly realized.
The upward ejection directional solidification pouring system comprises a mould shell and a melting crucible, wherein a pouring gate and a crystal starting section of the mould shell are both positioned on a top chassis of the mould shell, a center column rod of the mould shell is a pouring channel of the mould shell, the melting crucible is arranged above the mould shell and is in butt joint communication with the pouring gate, and an alloy plug capable of being melted by alloy liquid in the melting crucible is arranged on a liquid outlet at the bottom of the melting crucible.
Specifically, seed crystals are plugged into the seeding section.
Specifically, a ceramic support ring for supporting the melting crucible is arranged on a top chassis of the mould shell.
Specifically, the upper end of the seed crystal extends out of the top chassis.
Specifically, the bottom of the mould shell is also provided with ceramic columns.
Specifically, the melting crucible is an induction heating crucible.
Specifically, the alloy plug and the alloy liquid in the melting crucible are made of the same or similar materials.
Compared with the prior art, at least one embodiment of the utility model has the following beneficial effects: placing the mould shell on a lifting table of a directional solidification furnace, carrying out material melting by using a material melting crucible, melting an alloy plug preset at the bottom of the crucible in a heat transfer mode after an alloy ingot is melted, wherein oxide inclusions in alloy liquid can float upwards in the process, and oxidation inclusions of castings are reduced; and after the pouring is finished, the lifting platform drives the mould shell to move from a hot chamber of the directional solidification furnace to a cold chamber to finish directional solidification along gravity, and when the molten alloy enters the cold chamber to perform directional solidification, the middle post rod is cooled slowly, solidification is delayed to a casting, the liquid level of the molten alloy is higher than the liquid level of the alloy of the casting, and the casting can be fed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an upward ejection directional solidification casting system provided by an embodiment of the utility model;
Wherein: 1. a mould shell; 2. melting a crucible; 3. a top chassis; 4. a middle post; 5. an alloy plug; 6. seed crystal; 7. a ceramic support ring; 8. a ceramic jack-up column; 9. a lifting table; 10. a hot chamber; 11. a cold room.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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 understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, an upward ejection directional solidification pouring system comprises a die shell 1 and a melting crucible 2, wherein a pouring gate and a crystal lifting section of the die shell 1 are both positioned on a top chassis 3 of the die shell 1, a center column rod 4 of the die shell 1 is a pouring channel of the die shell 1, the melting crucible 2 is arranged above the die shell 1 and is in butt joint communication with the pouring gate, and an alloy plug 5 which can be melted by alloy liquid in the melting crucible 2 is arranged on a liquid outlet at the bottom of the melting crucible 2.
When the upward ejection directional solidification pouring system is utilized for directional solidification, after the die shell 1 is placed on the lifting table 9 of the directional solidification furnace, the material melting crucible 2 is utilized for material melting, after the alloy ingot is melted, the alloy plug 5 is preset at the bottom of the crucible in a heat transfer mode, oxide impurities in the alloy liquid can float upwards in the process, and the oxide impurities of castings are reduced; after the casting is finished, the lifting table 9 drives the mould shell 1 to move from a hot chamber 10 of a directional solidification furnace to a cold chamber 11 to finish directional solidification along gravity, and when the molten alloy enters the cold chamber 11 to perform directional solidification, the middle post 4 is cooled slowly, solidification is delayed to a casting, the liquid level of the molten alloy is higher than the liquid level of the alloy of the casting, so that the casting can be fed, and the casting quality is ensured.
Referring to FIG. 1, in some embodiments, a seed crystal 6 is inserted into the seeding section, and castings are produced by the seed crystal method in this embodiment, and the design makes the top chassis 3 of the mold shell 1 free from a crystallization tray, so that the whole system is effectively simplified. Of course, the casting can also be prepared by adopting a crystal selection method.
Referring to fig. 1, in other embodiments, a ceramic support ring 7 for supporting a melting crucible 2 is placed on a top chassis 3 of a mold shell 1, and a runner at the bottom of the crucible is inserted into a center pillar 4 of the mold shell 1 to a certain depth, and the crucible is supported by the ceramic support ring 7, so that the crucible is kept stable.
It will be appreciated that when the seed crystal 6 is plugged, the top of the seed crystal 6 is exposed from the top chassis 3 of the mould shell 1, leaving a portion of the seed crystal 6 unmelted, preventing the alloy liquid poured into the mould shell 1 from flowing out. When the mould shell 1 is heated in the furnace chamber, the seed crystal 6 on the mould shell 1 only melts a part, the rest part can keep solid, after the alloy liquid is poured into the mould shell 1, the alloy liquid contacts with the seed crystal 6 with a certain height, so that the liquid level difference between the middle post rod 4 and the alloy liquid in the casting can be increased, the feeding effect of the middle post rod 4 is enhanced, and the casting is prevented from being broken during solidification.
Referring to fig. 1, in the actual directional solidification process, the formwork 1 is placed on a section of high temperature resistant ceramic jacking column 8, the ceramic jacking column 8 is placed on a lifting table 9, the ceramic jacking column 8 and the lifting table 9 are fixedly connected by adopting ceramic slurry, the formwork 1 is placed on a platform of the ceramic jacking column 8, when the formwork is ejected upwards, the ceramic jacking column 8 enters a hot chamber 10, the formwork 1 is ejected from the upper part of the hot chamber 10, in the formwork 1 jacking process, only the high temperature resistant ceramic jacking column 8 is positioned in the hot chamber, and the whole lifting table 9 is positioned outside the hot chamber 10 and cannot be influenced by the high temperature of the hot chamber. Wherein, in order to effectively prevent the alloy plug 5 from affecting the components of the alloy liquid, the alloy plug 5 of the same material as the alloy liquid is preset in the pouring gate at the bottom of the crucible. Of course, for the nickel-based superalloy, pure nickel may be used as the material of the alloy plug 5.
Wherein, melting crucible 2 can adopt induction heating crucible, and during the material melting, the upset induction coil makes it surround the crucible and carries out the material melting. Of course, the melting crucible 2 may be heated in other ways, as long as it is possible to heat the alloy in the crucible to the desired temperature.
Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.
Meanwhile, if the above utility model discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated. Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
The above examples are only illustrative of the utility model and are not intended to be limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Nor is it necessary or impossible to exhaust all embodiments herein. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (7)
1. The utility model provides an upward ejecting directional solidification gating system, includes mould shell (1) and melting crucible (2), its characterized in that: the pouring gate and the crystallization section of the mould shell (1) are both positioned on a top chassis (3) of the mould shell (1), a center pole (4) of the mould shell (1) is a pouring channel of the mould shell (1), the melting crucible (2) is arranged above the mould shell (1) and is in butt joint communication with the pouring gate, and an alloy plug (5) which can be melted by alloy liquid in the melting crucible (2) is arranged on a liquid outlet at the bottom of the melting crucible (2).
2. The upward-ejection directional solidification casting system of claim 1, wherein: seed crystals (6) are plugged into the seeding section.
3. The upward-ejection directional solidification casting system of claim 2, wherein: the upper end of the seed crystal (6) extends out of the top chassis (3).
4. An upward-ejection directional solidification casting system according to any one of claims 1 to 3, wherein: a ceramic support ring (7) for supporting the melting crucible (2) is arranged on the top chassis (3) of the mould shell (1).
5. An upward-ejection directional solidification casting system according to any one of claims 1 to 3, wherein: the bottom of the mould shell (1) is also provided with a ceramic jacking column (8).
6. An upward-ejection directional solidification casting system according to any one of claims 1 to 3, wherein: the melting crucible (2) is an induction heating crucible.
7. An upward-ejection directional solidification casting system according to any one of claims 1 to 3, wherein: the alloy plug (5) and the melting crucible (2) are made of the same alloy liquid material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322472516.3U CN220837817U (en) | 2023-09-12 | 2023-09-12 | Upward ejection directional solidification casting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322472516.3U CN220837817U (en) | 2023-09-12 | 2023-09-12 | Upward ejection directional solidification casting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220837817U true CN220837817U (en) | 2024-04-26 |
Family
ID=90782554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322472516.3U Active CN220837817U (en) | 2023-09-12 | 2023-09-12 | Upward ejection directional solidification casting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220837817U (en) |
-
2023
- 2023-09-12 CN CN202322472516.3U patent/CN220837817U/en active Active
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