CN101543875A - Ceramic core with exhaust holes - Google Patents
Ceramic core with exhaust holes Download PDFInfo
- Publication number
- CN101543875A CN101543875A CN200910031374A CN200910031374A CN101543875A CN 101543875 A CN101543875 A CN 101543875A CN 200910031374 A CN200910031374 A CN 200910031374A CN 200910031374 A CN200910031374 A CN 200910031374A CN 101543875 A CN101543875 A CN 101543875A
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- ceramic core
- exhaust
- cast
- foundry goods
- exhaust holes
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Abstract
The invention relates to a ceramic core with exhaust holes, in particular to a ceramic core which is used for cast forming, has the function of exhaust and can effectively reduce the rejection rate of the cast caused by generated gas holes in the forming process because of unsmooth exhaust. The ceramic core is characterized by being provided with a plurality of small exhaust holes. The invention has simple, compact and reasonable structure, can effectively overcome the weakness that the traditional ceramic core has poor exhaust capability, enables the cast to smooth exhaust during forming, enhances the yield of the cast and lowers the production cost.
Description
Technical field
The present invention relates to a kind of band steam vent ceramic core, it is the ceramic core with degassing function that is used for the foundry goods moulding specifically, can effectively reduce in the foundry goods forming process not produce the scrappage that pore causes because of exhaust does not freely make foundry goods.Belong to the frame for movement technical field.
Background technology
In existing fusible pattern (dewax) Casting Technology, ceramic core is often adopted at the position of narrow inconvenience system shell in some space.Because the venting quality of ceramic material is very poor, when foundry goods needs the position of exhaust to be positioned at below the ceramic core in forming process, because of freely not making foundry goods produce pore, exhaust do not scrap (adopt the place of ceramic core often the space is narrow can not repair) herein, especially to exigent pressure-bearing foundry goods, its scrappage is very high, and production cost is risen.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of weakness that can effectively overcome traditional ceramics core venting quality difference is provided, make foundry goods exhaust smoothly in forming process, can improve casting yield, the band steam vent ceramic core that reduces production costs.
According to technical scheme provided by the invention, band steam vent ceramic core comprises ceramic core, foundry goods, and ceramic core is arranged in the foundry goods, and feature is: offer a plurality of exhaust holes on the described ceramic core.Foundry goods is in forming process, and gas can be discharged smoothly by steam vent in the die cavity, effectively reduces the bleb defective.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Can effectively overcome the weakness of traditional ceramics core venting quality difference, make foundry goods exhaust smoothly in forming process, improve casting yield, reduce production costs.
Description of drawings
Fig. 1 is structure user mode figure of the present invention.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1: comprise ceramic core 1 and foundry goods 2.Ceramic core 1 is arranged in the foundry goods 2, because foundry goods 2 is narrow in the space, position that ceramic core 1 is set, and inconvenience system shell (shell) (shell is thin, and intensity is low, is easy to generate shell during cast herein and breaks), this is the reason that adopts ceramic core herein usually.In the casting pouring forming process, high-temperature molten steel steadily rises from the shell bottom, type cavity gas pressure raises, part gas is by the ventilative discharge of shell, the molten steel that another part is risen is driven upward, when gas entered the high point of local high spot and this and covered by ceramic core, these gas pressures risings but can't be discharged, and produce bleb during solidification of molten steel under this local high spot.Offer several exhaust holes 1-1 on the ceramic core 1 of the present invention and be exactly in order to allow the gas under the local high spot discharge smoothly along the direction of arrow among the figure, to eliminate the bleb defective by aperture 1-1.Facts have proved that the present invention is simple in structure, effect is remarkable, and casting quality is stable.
Claims (1)
1, a kind of band steam vent ceramic core comprises ceramic core (1), foundry goods (2), and ceramic core (1) is arranged in the foundry goods (2), it is characterized in that: offer a plurality of exhaust holes (1-1) on the described ceramic core (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910031374A CN101543875A (en) | 2009-04-30 | 2009-04-30 | Ceramic core with exhaust holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910031374A CN101543875A (en) | 2009-04-30 | 2009-04-30 | Ceramic core with exhaust holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101543875A true CN101543875A (en) | 2009-09-30 |
Family
ID=41191396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910031374A Pending CN101543875A (en) | 2009-04-30 | 2009-04-30 | Ceramic core with exhaust holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101543875A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279875A (en) * | 2018-08-24 | 2019-01-29 | 清华大学 | The preparation method of ceramic mould |
| CN111673050A (en) * | 2020-05-19 | 2020-09-18 | 中国科学院金属研究所 | Method for filling hollow ceramic core for precision investment casting |
-
2009
- 2009-04-30 CN CN200910031374A patent/CN101543875A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279875A (en) * | 2018-08-24 | 2019-01-29 | 清华大学 | The preparation method of ceramic mould |
| CN109279875B (en) * | 2018-08-24 | 2021-02-26 | 清华大学 | Preparation method of ceramic mold |
| CN111673050A (en) * | 2020-05-19 | 2020-09-18 | 中国科学院金属研究所 | Method for filling hollow ceramic core for precision investment casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090930 |