CN202291270U - Blind riser with atmospheric pressure sand core - Google Patents
Blind riser with atmospheric pressure sand core Download PDFInfo
- Publication number
- CN202291270U CN202291270U CN2011204920936U CN201120492093U CN202291270U CN 202291270 U CN202291270 U CN 202291270U CN 2011204920936 U CN2011204920936 U CN 2011204920936U CN 201120492093 U CN201120492093 U CN 201120492093U CN 202291270 U CN202291270 U CN 202291270U
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- CN
- China
- Prior art keywords
- atmospheric pressure
- mud core
- riser
- sand core
- blind riser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a blind riser with an atmospheric pressure sand core. The blind riser comprises a riser main body; the top of the riser main body is provided with a sand core hole. Procedures of manufacturing a small sand core and inserting the small sand core into a cavity during mold assembly in the conventional atmospheric pressure riser are avoided, the blind riser is convenient to manufacture and easy to use, a great quantity of manpower and material resources are saved, a shrinkage compensation effect is good and the atmospheric pressure sand core is positioned accurately.
Description
Technical field
The utility model relates to casting field, is specifically related to a kind of blind riser that carries atmospheric pressure mud core.
Background technology
As shown in Figure 1, often adopt common blind riser in the sand casting, generally speaking; Rising head main body 1 is placed on the foundry goods chamber 6 that is positioned at drag box 5 between cope 4 and the drag box 5, between cope 4 and the rising head main body 1 venthole 7 is arranged, in order to improve the feeding capacity of rising head; Usually to insert 1 to 2 columniform little mud core 3 at the top of rising head main body 1; Its operation principle is: after the cast, molten steel is heated to very high temperature with little mud core 3, makes little mud core 3 molten steel solidification on every side slow; Guaranteeing that rising head main body 1 can be communicated with atmospheric pressure through little mud core 3 in the process of feeding does not all the time produce vacuum, thereby the feeding efficiency of raising rising head.The making of atmospheric riser originally must have 2 processes: 1, make little mud core 3; 2, little mud core 3 is inserted in the die cavity of rising head main bodys 1 during mould assembling, technology comparatively bothers.
Summary of the invention
The utility model technical problem to be solved is to provide a kind of blind riser that carries atmospheric pressure mud core, and is easy to make, uses simply, and feeding is effective, the accurate positioning of atmospheric pressure mud core.
For solving above-mentioned existing technical problem, the utility model adopts following scheme: a kind of blind riser that carries atmospheric pressure mud core, comprise the rising head main body, and the top of said rising head main body is provided with mud core hole.
As preferably, said mud core hole is adopted conical.The circular cone tip than columniform better effects if, has been improved the feeding efficiency of rising head by the fuel factor of molten steel heating generation more.
As preferably, the cone angle in said mud core hole adopts 60 °-90 °.When dropping on this scope, mud core hole cone angle forms the mud core easily.
As preferably, the cone angle in said mud core hole adopts 75 °.There is feeding efficiency preferably the circular cone tip when being 75 °.
Beneficial effect:
The utility model adopts technique scheme that a kind of blind riser that carries atmospheric pressure mud core is provided; Removed the production process of little mud core insertion die cavity when making little mud core and mould assembling in the original atmospheric riser from; Easy to make, use simply, saved great amount of manpower and material resources; Feeding is effective, the accurate positioning of atmospheric pressure mud core.
Description of drawings
Fig. 1 is the structural representation of common rising head;
Fig. 2 is the structural representation of the utility model.
The specific embodiment
As shown in Figure 2, a kind of blind riser that carries atmospheric pressure mud core comprises rising head main body 1, and the top of said rising head main body 1 is provided with mud core hole 2.Said mud core hole 2 is adopted conical.The cone angle in said mud core hole 2 adopts 60 °-90 °, and preferred version is 75 °.
After the actual cast; Molten steel is heated to very high temperature with conical mud core hole 2, makes the molten steel solidification around the mud core hole 2 slower, guarantees that rising head main body 1 can be communicated with atmospheric pressure all the time not produce vacuum in the process of feeding; It is more accurate to locate, and has improved the feeding efficiency of blind riser.Because this structure can have been removed the twice production process of little mud core 3 insertion die cavities when making little mud core 3 with mould assembling in the original atmospheric riser from as the mud core hole 2 of mud core from being provided with, and has saved great amount of manpower and material resources.
Claims (4)
1. a blind riser that carries atmospheric pressure mud core comprises rising head main body (1), it is characterized in that: the top of said rising head main body (1) is provided with mud core hole (2).
2. a kind of blind riser that carries atmospheric pressure mud core according to claim 1 is characterized in that: said mud core hole (2) is adopted conical.
3. a kind of blind riser that carries atmospheric pressure mud core according to claim 2 is characterized in that: the cone angle in said mud core hole (2) adopts 60 °-90 °.
4. a kind of blind riser that carries atmospheric pressure mud core according to claim 3 is characterized in that: the cone angle in said mud core hole (2) adopts 75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204920936U CN202291270U (en) | 2011-12-01 | 2011-12-01 | Blind riser with atmospheric pressure sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204920936U CN202291270U (en) | 2011-12-01 | 2011-12-01 | Blind riser with atmospheric pressure sand core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202291270U true CN202291270U (en) | 2012-07-04 |
Family
ID=46360250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204920936U Expired - Lifetime CN202291270U (en) | 2011-12-01 | 2011-12-01 | Blind riser with atmospheric pressure sand core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202291270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407290A (en) * | 2011-12-01 | 2012-04-11 | 中核苏阀横店机械有限公司 | Blind riser with atmospheric mud core |
| CN108115098A (en) * | 2018-01-02 | 2018-06-05 | 繁昌县金牛机械铸造有限责任公司 | A kind of sand casting mud core |
-
2011
- 2011-12-01 CN CN2011204920936U patent/CN202291270U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407290A (en) * | 2011-12-01 | 2012-04-11 | 中核苏阀横店机械有限公司 | Blind riser with atmospheric mud core |
| CN108115098A (en) * | 2018-01-02 | 2018-06-05 | 繁昌县金牛机械铸造有限责任公司 | A kind of sand casting mud core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |