CN219632576U - Double-lift-tube low-pressure casting die structure - Google Patents
Double-lift-tube low-pressure casting die structure Download PDFInfo
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- CN219632576U CN219632576U CN202320733943.XU CN202320733943U CN219632576U CN 219632576 U CN219632576 U CN 219632576U CN 202320733943 U CN202320733943 U CN 202320733943U CN 219632576 U CN219632576 U CN 219632576U
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- pouring
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- lift
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- 238000005266 casting Methods 0.000 title claims abstract description 103
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a double-lift-tube low-pressure casting die structure, which belongs to the technical field of low-pressure casting and comprises an upper die, a core die, a bottom die, a left half die and a right half die, wherein a left casting vertical pipe and a right casting vertical pipe are vertically arranged in the left half die and the right half die respectively, a left lift-tube feed inlet and a right lift-tube feed inlet are symmetrically arranged in the bottom die, the left casting vertical pipe and the right casting vertical pipe are respectively communicated with the left lift-tube feed inlet and the right lift-tube feed inlet in the same caliber, the left casting vertical pipe and the right casting vertical pipe are respectively provided with a plurality of casting branch pipes, the end parts of the casting branch pipes are connected with casting channels, and the casting channels are communicated with cavities of castings. The end part of the pouring branch pipe is connected with pouring channels which are symmetrically arranged at equal intervals. The compensating channel of the casting is more uniform, and the external force applied to the metal liquid is more stable. Thereby being beneficial to solving the technical problems of forming defects such as casting air holes, shrinkage porosity and the like.
Description
Technical Field
The utility model relates to the technical field of low-pressure casting, in particular to a double-lift-tube low-pressure casting die structure.
Background
Low pressure casting refers to a process in which liquid metal is allowed to fill a mold under relatively low pressure and crystallize under pressure to form a casting. Pouring molten metal into a heat-insulating crucible, installing a sealing cover, leading the molten metal to be communicated with a casting mould by a liquid lifting guide pipe, locking the casting mould, slowly introducing dry compressed air into the crucible, leading the molten metal to be under the action of gas pressure, filling a cavity along a liquid lifting pipe and a pouring system from bottom to top, and crystallizing under the pressure. By adopting the metal type low-pressure casting process, the pinhole defect of the casting can be effectively eliminated, and the appearance shape quality can be improved. However, for some castings with large weight and more feeding parts, such as some complicated pressure-resistant thin-wall parts, the common single-lift-tube casting process is difficult to meet the process requirements, and the double-lift-tube low-pressure casting process is necessary to produce the pressure-resistant shell product. However, due to the fact that the flowing distance of the metal liquid is increased by adopting the double liquid lifting pipes, if the feeding channel is not smooth, the liquid is not fully acted by external force, and defects such as shrinkage porosity of castings are easily formed.
Disclosure of Invention
The utility model aims to overcome the technical problems that the two lift tubes are increased in metal liquid flowing distance, the feeding channel is not smooth, the liquid is not fully acted by external force, and defects such as shrinkage porosity and the like of castings are easily caused, and provides a low-pressure casting die structure with the two lift tubes.
In order to achieve the above purpose, the technical scheme adopted is as follows: the utility model provides a two stalk low pressure casting mould structures, includes mould, mandrel, die block, left half mould and right half mould, left side half mould and right half mould are inside to be equipped with left pouring riser and right pouring riser respectively vertically, the inside symmetry of die block is equipped with left stalk feed inlet and right stalk feed inlet, left pouring riser and right pouring riser are the same and be linked together with left stalk feed inlet and right stalk feed inlet bore respectively, left pouring riser and right pouring riser are equipped with a plurality of pouring branch pipes respectively, pouring branch pipe end connection has the pouring channel, the pouring channel is linked together with the die cavity of foundry goods.
Furthermore, the pouring branch pipes are transversely and symmetrically arranged at two sides of the left pouring vertical pipe and the right pouring vertical pipe.
Furthermore, the pouring channels are symmetrically arranged at equal intervals.
Further, heat preservation layers are arranged on the outer sides of the left pouring vertical pipe and the right pouring vertical pipe.
Further, the number of pouring branch pipes is matched with the shape and the size of the longitudinal section of the casting.
The beneficial effects of adopting above-mentioned scheme are: the double-lift-tube low-pressure casting die structure is characterized in that the left casting stand pipe and the right casting stand pipe are vertically arranged inside the left half die and the right half die respectively, and the left casting stand pipe and the right casting stand pipe are communicated with the same caliber of the left lift-tube feed inlet and the right lift-tube feed inlet on the bottom die respectively, so that low-pressure casting can be effectively performed on castings. The left pouring vertical pipe and the right pouring vertical pipe are respectively provided with a plurality of pouring branch pipes, and the pouring branch pipes are transversely and symmetrically arranged on two sides of the left pouring vertical pipe and the right pouring vertical pipe. The end part of the pouring branch pipe is connected with pouring channels which are symmetrically arranged at equal intervals. The compensating channel of the casting is more uniform, and the external force applied to the metal liquid is more stable. Thereby being beneficial to solving the technical problems of forming defects such as casting air holes, shrinkage porosity and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of a dual lift tube low pressure casting mold according to the present utility model.
FIG. 2 is a schematic cross-sectional view of a dual lift tube low pressure casting mold according to the present utility model.
Fig. 3 is a schematic diagram showing the internal structure of a dual lift tube low pressure casting mold according to the present utility model.
Fig. 4 is a schematic diagram showing the internal structure of a low-pressure casting mold with a dual lift tube according to the present utility model.
In the figure, 1-upper mold, 2-core mold, 3-bottom mold, 4-left half mold, 5-right half mold, 6-left pouring riser, 601-first left pouring branch, 602-second left pouring branch, 603-third left pouring branch, 7-right pouring riser, 701-first right pouring branch, 702-second right pouring branch, 703-third right pouring branch, 8-left riser feed, 9-right riser feed, 10-casting, 11-pouring channel.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in the following in connection with the specific embodiments of the present utility model. The described embodiments are only some, but not all, embodiments of the utility model. 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.
Embodiment one:
as shown in fig. 1 to 4, a dual-lift-tube low-pressure casting mold structure comprises an upper mold 1, a core mold 2, a bottom mold 3, a left mold half 4 and a right mold half 5, wherein a left casting riser 6 and a right casting riser 7 are vertically arranged inside the left mold half 4 and the right mold half 5 respectively, a left lift-tube feed inlet 8 and a right lift-tube feed inlet 9 are symmetrically arranged inside the bottom mold 3, the left casting riser 6 and the right casting riser 7 are respectively communicated with the same caliber of the left lift-tube feed inlet 8 and the right lift-tube feed inlet 9, the left casting riser 6 and the right casting riser 7 are respectively provided with a plurality of casting branch pipes, the end parts of the casting branch pipes are connected with a casting channel 11, and the casting channel 11 is communicated with a cavity of a casting 10.
Preferably, heat insulation layers are arranged on the outer sides of the left pouring vertical pipe 6 and the right pouring vertical pipe 7.
Preferably, the number of pouring branches matches the longitudinal cross-sectional shape and size of the casting 10.
The low-pressure casting adopts bottom pouring type filling, the molten metal filling is stable, no splashing phenomenon exists, gas is prevented from being involved, the mold wall and the mold core are prevented from being washed, defects of air holes, slag inclusion and the like of the casting are few, and the qualification rate of the casting is improved. For some castings with large weight and more feeding parts in the prior art, it is necessary to produce the pressure-resistant shell product by adopting a double-lift-tube low-pressure casting process. According to the technical scheme of the embodiment, the left pouring vertical pipe 6 and the right pouring vertical pipe 7 are vertically arranged inside the left half die 4 and the right half die 5 respectively, and the left pouring vertical pipe 6 and the right pouring vertical pipe 7 are communicated with the same caliber of the left riser pipe feed inlet 8 and the right riser pipe feed inlet 9 on the bottom die 3 respectively, so that low-pressure casting can be effectively performed on the casting 10. The left pouring vertical pipe 6 and the right pouring vertical pipe 7 are respectively provided with a plurality of pouring branch pipes. Is beneficial to solving the technical problems of forming defects such as casting air holes, shrinkage porosity and the like.
Embodiment two:
as shown in fig. 1 to 4, a dual-lift-tube low-pressure casting mold structure comprises an upper mold 1, a core mold 2, a bottom mold 3, a left mold half 4 and a right mold half 5, wherein a left casting riser 6 and a right casting riser 7 are vertically arranged inside the left mold half 4 and the right mold half 5 respectively, a left lift-tube feed inlet 8 and a right lift-tube feed inlet 9 are symmetrically arranged inside the bottom mold 3, the left casting riser 6 and the right casting riser 7 are respectively communicated with the same caliber of the left lift-tube feed inlet 8 and the right lift-tube feed inlet 9, the left casting riser 6 and the right casting riser 7 are respectively provided with a plurality of casting branch pipes, the end parts of the casting branch pipes are connected with a casting channel 11, and the casting channel 11 is communicated with a cavity of a casting 10.
Preferably, the pouring branch pipes are symmetrically arranged on two sides of the left pouring vertical pipe 6 and the right pouring vertical pipe 7.
Preferably, the pouring channels 11 are symmetrically arranged at equal intervals.
Preferably, heat insulation layers are arranged on the outer sides of the left pouring vertical pipe 6 and the right pouring vertical pipe 7.
Preferably, the number of pouring branches matches the longitudinal cross-sectional shape and size of the casting 10.
The casting with the revolving body composite structure has the advantages of large weight, large wall thickness change, various bosses and flange sealing surfaces (grooves) with high quality requirements, and relatively complex structural shape. In this embodiment, on the basis of the first embodiment, the pouring branch pipes are symmetrically arranged on two sides of the left pouring vertical pipe 6 and the right pouring vertical pipe 7. The end part of the pouring branch pipe is connected with pouring channels 11, and the pouring channels 11 are symmetrically arranged at equal intervals. The feeding channels of the castings at the positions of the boss and the flange sealing surface (groove) are more uniform, and the external force applied to the metal liquid is more stable. Thereby further helping to solve the technical problems of formation of defects such as casting air holes, shrinkage cavities, shrinkage porosity and the like.
Embodiment III:
as shown in fig. 1 to 4, a dual-lift-tube low-pressure casting mold structure comprises an upper mold 1, a core mold 2, a bottom mold 3, a left mold half 4 and a right mold half 5, wherein a left casting riser 6 and a right casting riser 7 are vertically arranged inside the left mold half 4 and the right mold half 5 respectively, a left lift-tube feed inlet 8 and a right lift-tube feed inlet 9 are symmetrically arranged inside the bottom mold 3, the left casting riser 6 and the right casting riser 7 are respectively communicated with the same caliber of the left lift-tube feed inlet 8 and the right lift-tube feed inlet 9, the left casting riser 6 and the right casting riser 7 are respectively provided with a plurality of casting branch pipes, the end parts of the casting branch pipes are connected with a casting channel 11, and the casting channel 11 is communicated with a cavity of a casting 10.
Preferably, the pouring branch pipes are symmetrically arranged on two sides of the left pouring vertical pipe 6 and the right pouring vertical pipe 7.
Preferably, the pouring channels 11 are symmetrically arranged at equal intervals.
Preferably, heat insulation layers are arranged on the outer sides of the left pouring vertical pipe 6 and the right pouring vertical pipe 7.
Preferably, the number of pouring branches matches the longitudinal cross-sectional shape and size of the casting 10. The left pouring vertical pipe 6 and the right pouring vertical pipe 7 are respectively provided with a first left pouring branch pipe 601, a second left pouring branch pipe 602, a third left pouring branch pipe 603, a first right pouring branch pipe 701, a second right pouring branch pipe 702 and a third right pouring branch pipe 703.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a two stalk low pressure casting die structures, includes mould (1), mandrel (2), die block (3), left half mould (4) and right half mould (5), characterized by: left side die half (4) and right side die half (5) are inside vertically respectively to be equipped with left pouring riser (6) and right pouring riser (7), inside symmetry of die block (3) is equipped with left stalk feed inlet (8) and right stalk feed inlet (9), left side pouring riser (6) and right pouring riser (7) are the same and are linked together with left stalk feed inlet (8) and right stalk feed inlet (9) bore respectively, left side pouring riser (6) and right pouring riser (7) are equipped with a plurality of pouring branch pipes respectively, pouring branch pipe end connection has pouring channel (11), pouring channel (11) are linked together with the die cavity of foundry goods (10).
2. The dual lift tube low pressure casting die structure as claimed in claim 1, wherein: the pouring branch pipes are transversely and symmetrically arranged on two sides of the left pouring vertical pipe (6) and the right pouring vertical pipe (7).
3. The dual lift tube low pressure casting die structure as claimed in claim 2, wherein: the pouring channels (11) are symmetrically arranged at equal intervals.
4. The dual lift tube low pressure casting die structure as claimed in claim 1, wherein: and heat insulation layers are arranged on the outer sides of the left pouring vertical pipe (6) and the right pouring vertical pipe (7).
5. The dual lift tube low pressure casting die structure as claimed in claim 1, wherein: the number of pouring branches is matched to the shape and size of the longitudinal section of the casting (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320733943.XU CN219632576U (en) | 2023-04-06 | 2023-04-06 | Double-lift-tube low-pressure casting die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320733943.XU CN219632576U (en) | 2023-04-06 | 2023-04-06 | Double-lift-tube low-pressure casting die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219632576U true CN219632576U (en) | 2023-09-05 |
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ID=87812757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320733943.XU Active CN219632576U (en) | 2023-04-06 | 2023-04-06 | Double-lift-tube low-pressure casting die structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219632576U (en) |
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2023
- 2023-04-06 CN CN202320733943.XU patent/CN219632576U/en active Active
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