CN114406201B - Casting method and system for guide rail non-porous upright post - Google Patents
Casting method and system for guide rail non-porous upright post Download PDFInfo
- Publication number
- CN114406201B CN114406201B CN202210091593.1A CN202210091593A CN114406201B CN 114406201 B CN114406201 B CN 114406201B CN 202210091593 A CN202210091593 A CN 202210091593A CN 114406201 B CN114406201 B CN 114406201B
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- sand
- steel pipe
- concave
- convex positioning
- core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A casting method and a casting system for a guide rail non-porous stand column relate to the technical field of stand column sand core casting and are used for solving the technical problems that the existing sand core is difficult to air out and a burr is easy to occur at the joint of the sand cores. The casting method of the guide rail non-porous stand column comprises the following steps: arranging steel pipe holes in all the segmented sand cores, and placing hollow steel pipes in the holes; a connecting steel pipe is placed at one convex positioning end of the No. 1 sand core to ensure smooth ventilation of the middle steel pipe of the sand core; during die assembly, sand is added at the concave and convex positioning positions of the two adjacent sand cores, a connecting steel pipe is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe is consistent with the length of the concave and convex positioning combination, so that the two adjacent sand cores are connected together by the concave and convex positioning; and the gas in the sand core is discharged through each steel pipe and the square hole core heads connected with the steel pipes and led to the two sides.
Description
Technical Field
The invention relates to the technical field of column sand core casting, in particular to a method and a system for casting a guide rail non-porous column.
Background
When molten iron is poured, the sand core can generate a large amount of gas in a short time after pouring due to volatilization, decomposition and combustion of organic matters and evaporation of water under the action of high-temperature metal liquid, necessary measures are taken in the whole process of designing and manufacturing the sand core and in the core setting and die closing operations, so that the gas generated in the sand core during pouring can be timely and smoothly discharged through the core head, and besides the sand core manufactured by adopting core sand with good air permeability, the proper air passage is arranged in the sand core during core manufacturing, and meanwhile, the air passage communication is reserved at the position of the sand mold corresponding to the air outlet hole of the core head.
In the column molding process, the performance of the guide rail surface needs to be ensured, the best casting method is that the guide rail is arranged on the lower box, the upper box is provided with a transdermal hole which can be used for exhausting the sand core, but for the large column without the transdermal hole on the upper box, the sand core is large, the sectional sand core is difficult to exhaust, the hole is required to be formed on the upper part of the sand core, the strength of a casting is influenced, repair welding is required to be performed at the later stage of the hole, welding blocks are required to be additionally formed, manpower and material resources are consumed, raw materials and manpower are consumed, and then a large flash is easy to appear at the joint between the sand cores, so that the polishing workload is large, and the polishing cost is increased.
Disclosure of Invention
The invention aims to provide a casting method and a casting system for a guide rail non-porous stand column, which are used for solving the technical problems that the existing sand cores are difficult to air out and the connection parts among the sand cores are easy to have burrs.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a casting method of a guide rail non-porous upright post comprises the following steps:
arranging steel pipe holes in all the segmented sand cores, and placing hollow steel pipes in the holes;
a connecting steel pipe is placed at one convex positioning end of the No. 1 sand core to ensure smooth ventilation of the middle steel pipe of the sand core;
during die assembly, sand is added at the concave and convex positioning positions of the two adjacent sand cores, a connecting steel pipe is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe is consistent with the length of the concave and convex positioning combination, so that the two adjacent sand cores are connected together by the concave and convex positioning;
and the gas in the sand core is discharged through each steel pipe and the square hole core heads connected with the steel pipes and led to the two sides.
Wherein, resin sand is adopted when sand is filled at the concave and convex positioning positions of two adjacent sand cores.
Specifically, the hollow steel pipe adopts a phi 130 pipe.
Further, the connecting steel pipe adopts phi 60 pipe.
A casting system for a rail void free column, comprising: a plurality of segmented sand cores, wherein two adjacent sand cores are connected together by concave and convex positioning; a steel pipe hole is formed in each segmented sand core, and a hollow steel pipe is placed in each steel pipe hole;
and a connecting steel pipe is placed at one end of the convex positioning of the 1# sand core, sand is supplemented at the concave and convex positioning positions of the two adjacent sand cores during die assembly, the connecting steel pipe is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe is consistent with the length of the concave and convex positioning combination.
Wherein, resin sand is adopted when sand is filled at the concave and convex positioning positions of two adjacent sand cores.
Specifically, the hollow steel pipe adopts a phi 130 pipe.
Further, the connecting steel pipe adopts phi 60 pipe.
During practical application, the core head of the No. 1 sand core is provided with a first convex positioning, the No. 2 sand core adjacent to the No. 1 sand core is matched with a concave positioning, and the first convex positioning and the concave positioning can be in butt joint.
The core head of the No. 2 sand core is provided with a second convex positioning device, and the second convex positioning device is far away from the concave positioning device.
Specifically, the inside of 1# psammitolite is provided with first steel pipe, the inside of 2# psammitolite is provided with the second steel pipe, just first steel pipe with communicate between the second steel pipe have the connection steel pipe.
Further, the connecting steel pipes are connected with the first steel pipes and the second steel pipes through the resin sand, and the resin sand is located on the outer side of the connecting steel pipes.
Compared with the prior art, the casting method and the casting system for the guide rail non-porous stand column have the following advantages:
according to the casting method and system for the guide rail non-hole stand column, the hollow steel pipes are respectively placed in the segmented sand cores, and the two adjacent hollow steel pipes are communicated through the connecting steel pipes, so that gas can be discharged from the core heads at the two ends, the problems of difficult air outlet of the sand cores and repair welding of castings are solved, the burrs at the joints between the sand cores are effectively reduced, the polishing workload is further reduced, the strength of the castings is not affected, the quality of the castings is ensured, and the cost is reduced.
Drawings
FIG. 1 is a schematic flow chart of a method for casting a guide rail imperforate upright post according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a casting system for a guide rail void free column according to an embodiment of the present invention;
FIG. 3 is a schematic view of a first perspective cross-sectional structure of a casting system for a rail void free column according to an embodiment of the present invention;
fig. 4 is a schematic view of a second perspective cross-sectional structure of a casting system for a guide rail non-porous stand column according to an embodiment of the present invention.
Reference numerals:
1-segmenting a sand core; 11-1# sand core; 111-first male positioning; 12-2# sand core; 121-concave positioning; 122-second male positioning;
2-hollow steel pipes; 21-a first steel pipe; 22-a second steel pipe; 3-connecting the steel pipes; 4-resin sand.
Detailed Description
In order to facilitate understanding, the following describes in detail the method and system for casting the guide rail non-porous upright provided by the embodiment of the invention with reference to the accompanying drawings.
The embodiment of the invention provides a casting method of a guide rail non-porous upright post, which is shown in figure 1 and comprises the following steps:
step S1, arranging steel pipe holes in all the segmented sand cores, and placing hollow steel pipes in the holes;
s2, placing a connecting steel pipe at one end of the 1# sand core protruding positioning end so as to ensure smooth ventilation of the middle steel pipe of the sand core;
s3, sand is added at the concave and convex positioning positions of the two adjacent sand cores during mold closing, a connecting steel pipe is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe is consistent with the length of the concave and convex positioning combination, so that the two adjacent sand cores are connected together by the concave and convex positioning;
and S4, discharging the gas in the sand core through square hole core heads which are led to two sides through each steel pipe and the connecting steel pipe.
A rail void free column casting system, as shown in fig. 2 and 3, comprising: a plurality of segmented sand cores 1, wherein two adjacent sand cores are connected together by concave and convex positioning; a steel pipe hole is formed in each segmented sand core 1, and a hollow steel pipe 2 is placed in each steel pipe hole;
the connecting steel pipe 3 is placed at one end of the convex positioning of the No. 1 sand core 11, sand is supplemented at the concave and convex positioning positions of two adjacent sand cores during die assembly, the connecting steel pipe 3 is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe 3 is consistent with the length of the concave and convex positioning combination.
Compared with the prior art, the casting method and the casting system for the guide rail non-porous stand column have the following advantages:
according to the casting method and system for the guide rail non-hole stand column, the hollow steel pipes 2 are respectively placed in the segmented sand cores 1, and the two adjacent hollow steel pipes 2 are communicated through the connecting steel pipe 3, so that gas can be discharged from the core heads at the two ends, the problems of difficult air outlet of the sand cores and repair welding of castings are solved, burrs at the joints between the sand cores are effectively reduced, polishing workload is further reduced, the strength of the castings is not affected, and the cost is reduced while the quality of the castings is ensured.
In the casting system of the guide rail non-hole stand column provided by the embodiment of the invention, as shown in fig. 2 and 3, resin sand 4 can be adopted when sand is filled at the concave and convex positioning positions of two adjacent sand cores. Resin sand refers to molding sand or core sand using synthetic resin as a binder for sand grains; after the mold or core is made of the resin sand, the resin is cured by an irreversible crosslinking reaction by the action of a hardening agent, thereby imparting necessary strength to the mold or core.
Specifically, in the casting system of the guide rail non-porous upright provided by the embodiment of the invention, as shown in fig. 2 and 3, the hollow steel pipe 2 may preferably be a phi 130 pipe.
Further, in the casting system of the guide rail non-porous stand column provided by the embodiment of the invention, as shown in fig. 2 and 3, the connecting steel pipe 3 may preferably be a phi 60 pipe.
In practical application, in the casting system of the guide rail non-hole upright column provided by the embodiment of the invention, as shown in fig. 2 and 3, the core head of the 1# sand core 11 is provided with a first convex positioning 111, and the 2# sand core 12 adjacent to the 1# sand core 11 is provided with a concave positioning 121 in a matching manner, and the first convex positioning 111 and the concave positioning 121 can be in butt joint, so that the two adjacent sand cores are connected together by using the concave positioning and the convex positioning.
In the casting system of the guide rail non-hole upright column provided by the embodiment of the invention, as shown in fig. 2 and 3, the core head of the 2# sand core 12 is provided with the second convex positioning 122, and the second convex positioning 122 is far away from the concave positioning 121 so as to be convenient for butting with the convex positioning of other segmented sand cores 1.
Specifically, in the casting system of the guide rail non-porous stand column provided by the embodiment of the invention, as shown in fig. 2 and 3, a first steel pipe 21 may be disposed in the 1# sand core 11, a second steel pipe 22 may be disposed in the 2# sand core 12, and the connecting steel pipe 3 may be communicated between the first steel pipe 21 and the second steel pipe 22, so that smooth ventilation of the middle steel pipe of the sand core is effectively ensured.
Further, in the casting system of the guide rail non-porous stand column provided by the embodiment of the invention, as shown in fig. 2 and 3, the connecting steel pipe 3, the first steel pipe 21 and the second steel pipe 22 may be connected by resin sand 4, and the resin sand 4 is located at the outer side of the connecting steel pipe 3, so that sand compensation is performed at the concave and convex positioning positions of two adjacent sand cores during mold closing.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The casting method of the guide rail non-porous upright post is characterized by comprising the following steps of:
arranging steel pipe holes in all the segmented sand cores, and placing hollow steel pipes in the holes;
a connecting steel pipe is placed at one convex positioning end of the No. 1 sand core to ensure smooth ventilation of the middle steel pipe of the sand core;
during die assembly, sand is added at the concave and convex positioning positions of the two adjacent sand cores, a connecting steel pipe is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe is consistent with the length of the concave and convex positioning combination, so that the two adjacent sand cores are connected together by the concave and convex positioning;
and the gas in the sand core is discharged through each steel pipe and the square hole core heads connected with the steel pipes and led to the two sides.
2. The method for casting a guide rail non-porous stand column according to claim 1, wherein resin sand is adopted when sand is replenished at concave and convex positioning positions of two adjacent sand cores.
3. The method for casting a guide rail non-porous stand column according to claim 1 or 2, wherein the hollow steel pipe is a phi 130 pipe.
4. A method of casting a guide rail void free column according to claim 3, wherein the connecting steel pipe is a phi 60 pipe.
5. A casting system for a rail void free column, comprising: a plurality of segmented sand cores, wherein two adjacent sand cores are connected together by concave and convex positioning; a steel pipe hole is formed in each segmented sand core, and a hollow steel pipe is placed in each steel pipe hole;
and a connecting steel pipe is placed at one end of the convex positioning of the 1# sand core, sand is supplemented at the concave and convex positioning positions of the two adjacent sand cores during die assembly, the connecting steel pipe is pulled to the inner end of the concave positioning from the convex positioning, and the length of the connecting steel pipe is consistent with the length of the concave and convex positioning combination.
6. The casting system of the guide rail non-porous stand column according to claim 5, wherein resin sand is adopted when sand is filled at the concave and convex positioning positions of two adjacent sand cores.
7. The casting system of the guide rail non-porous stand column according to claim 5 or 6, wherein the hollow steel pipe is a phi 130 pipe.
8. The system for casting a guide rail non-porous column according to claim 7, wherein the connecting steel pipe is a phi 60 pipe.
9. The guideway non-porous column casting system according to claim 5, wherein the core head of the # 1 sand core has a first male orientation and the # 2 sand core adjacent to the # 1 sand core has a female orientation in mating relation, the first male orientation being capable of interfacing with the female orientation.
10. The guideway pore-free column casting system according to claim 9, wherein the core head of the # 2 sand core has a second male location and the second male location is disposed away from the female location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091593.1A CN114406201B (en) | 2022-01-26 | 2022-01-26 | Casting method and system for guide rail non-porous upright post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091593.1A CN114406201B (en) | 2022-01-26 | 2022-01-26 | Casting method and system for guide rail non-porous upright post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114406201A CN114406201A (en) | 2022-04-29 |
| CN114406201B true CN114406201B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210091593.1A Active CN114406201B (en) | 2022-01-26 | 2022-01-26 | Casting method and system for guide rail non-porous upright post |
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| CN114406201A (en) | 2022-04-29 |
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