CN1597187A - Casting method of vacuum thin wall - Google Patents
Casting method of vacuum thin wall Download PDFInfo
- Publication number
- CN1597187A CN1597187A CN 200410060699 CN200410060699A CN1597187A CN 1597187 A CN1597187 A CN 1597187A CN 200410060699 CN200410060699 CN 200410060699 CN 200410060699 A CN200410060699 A CN 200410060699A CN 1597187 A CN1597187 A CN 1597187A
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- Prior art keywords
- vacuum
- casting mold
- casting
- thin wall
- liquid metal
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Abstract
A vacuum casting method for casting thin wall includes such steps as putting mould in a refractory container, making the mould in vacuum condition, surrounding the mould by sufficient molten metal and removing the vacuum condition to fill the molten metal in moulding cavity by atmosphere pressure.
Description
Technical field
The present invention relates to a kind of casting method, especially adopt the vacuum thin wall casting method.
Background technology
In the method for existing Special Processes of Metal Castings, counter-pressure casting, model casting can only be produced the foundry goods of 0.5～1mm with wall thickness, and the efficient that counter-pressure casting is produced is not high, and model casting is through roasting, and casting mold can reach higher temperature, but its pressure head that fills type is not high.Can influence the ability that liquid metal fills type because fill the pressure head of type, influence the formation of thin-section casting.Above-mentioned two kinds of casting methods all have deficiency separately.The method of casting seepage flow is used for the manufacturing of new material foamed aluminium at present, the casting mold of this method can heat, the molten metal of casting mold top is shaped under pull of vacuum, but because when filling type, vacuum in the casting mold die cavity is not high, molten metal is random flowing in the casting mold die cavity, and select to flow to the big place of hole, after two strands of molten metals cross, the die cavity that the back is not full of by molten metal is not discharged because of gas and is formed casting flaw, and the porosity of the foamed aluminium that this method has been produced, yield rate etc. all have problems.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming of said method, adopt a kind of atmospheric pressure or additonal pressure utilized to make liquid metal wrapped vacuum casting mold, produce the foundry goods of thin-walled, complexity.
The present invention is achieved like this, casting mold placed in the pasteurising vessel, and under vacuum environment, the liquid metal wrapped vacuum casting mold of capacity, behind the vacuum breaker, the die cavity of liquid metal filling cast under atmospheric pressure or additonal pressure is to obtain thin-wall complicated foundry goods.The casting mold of this casting method is put into pasteurising vessel after can preheating or is heated simultaneously at container with the cast metal, and it is better that it fills the type effect.
The present invention makes liquid metal filled vacuum casting mold under atmospheric pressure, and it is effective to fill type, and can produce wall thickness in this way is 0.1～0.25mm foundry goods, produce reticulated polymer foam aluminium, it is complete to fill type, and the hole lattice are even, porosity is 94.5%, and it is between 0.1～0.25 that network connects thickness.
Description of drawings
Fig. 1 is a structural representation of the present invention.
In the drawings, 1. vacuum chamber, 2. pasteurising vessel, 3. position-limited rack, 4. casting mold, 5. molten metal, 6. atmos-valve, 7. vacuum valve, 8. Pressure gauge, 9. vavuum pump, 10. high pressure is pressed jar.
The specific embodiment
As shown in Figure 1, casting mold (4) is put into pasteurising vessel (2), add the top that position-limited rack (3) is put in casting mold again, the molten metal (5) of pasteurising vessel (2) and capacity is put into vacuum chamber (1) respectively, close atmos-valve (6), open vacuum valve (7), vacuumize with vavuum pump (9), after vacuum chamber reaches the vacuum of reserving in advance, the molten metal (5) of capacity is poured in the pasteurising vessel (2), and liquid metal surrounds casting mold (4), closes vacuum valve (7), stop to vacuumize, open atmos-valve (6) vacuum breaker, atmospheric pressure is pressed into liquid metal in the die cavity of casting mold, when needing the additonal pressure operation, atmos-valve (6) can be closed, open the pressure pan switch, allow the source of the gas of pressure pan be pressed in the vacuum chamber, set up additonal pressure at the vacuum liquid level, by manometric reading, can control the additonal pressure size.This method is under the high vacuum state casting mold die cavity, is surrounded by liquid metal, and liquid metal utilizes atmospheric pressure or additonal pressure that it is filled type, and the pressure that fills type is very big, and it is fine that therefore the foundry goods of being produced fills the type effect, can make the foundry goods of thin-walled.Also can use the casting mold of different temperatures simultaneously, improve and fill the type effect according to the complexity of casting section thickness and shape.Under vacuum environment, when the temperature of casting mold reaches the temperature close with liquid metal, liquid metal surrounds casting mold, behind the vacuum breaker, when liquid metal utilizes atmosphere or additonal pressure that the die cavity of casting mold is filled type, can reach the best type effect of filling, at this moment, fill form-drag and have only the surface tension that produces between liquid metal and the casting mold.Calculating shows that A1～10%SI alloy can be produced the foundry goods that wall thickness reaches 0.036mm in this way under general pouring temperature, generally with the foamed aluminium of said method production, it is complete to fill type, and grid is even, porosity reaches 94.5%, and it is 0.1～0.25mm that grid connects thickness.
Claims (2)
1, the method for a kind of vacuum thin wall casting places pasteurising vessel with casting mold, and casting mold is under the vacuum environment, it is characterized in that allowing the liquid metal wrapped vacuum casting mold of capacity, and behind the vacuum breaker, liquid metal utilizes the die cavity of atmospheric pressure or additonal pressure filling cast.
2, the method for vacuum thin wall casting according to claim 1 is characterized in that casting mold can carry out preheating earlier, or heats simultaneously in container with the cast metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410060699 CN1270851C (en) | 2004-08-05 | 2004-08-05 | Casting method of vacuum thin wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410060699 CN1270851C (en) | 2004-08-05 | 2004-08-05 | Casting method of vacuum thin wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1597187A true CN1597187A (en) | 2005-03-23 |
| CN1270851C CN1270851C (en) | 2006-08-23 |
Family
ID=34666315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410060699 Expired - Fee Related CN1270851C (en) | 2004-08-05 | 2004-08-05 | Casting method of vacuum thin wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270851C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042194A (en) * | 2012-12-07 | 2013-04-17 | 重庆和鑫艺术品创作有限公司 | Device and method for preparing empty-shell thin-wall casting |
| CN103433479A (en) * | 2013-09-12 | 2013-12-11 | 河南正旭精密制造有限公司 | Thin-wall part casting process and casting cabin |
| CN105855521A (en) * | 2014-05-09 | 2016-08-17 | 重庆硕龙科技有限公司 | Method and device for gravity casting of light alloy |
| CN106141100A (en) * | 2015-04-14 | 2016-11-23 | 明安国际企业股份有限公司 | The casting method of glof club head and Casting Equipment |
| CN106493344A (en) * | 2016-12-27 | 2017-03-15 | 惠州市朝鲲科技有限公司 | A kind of pressure booster blower impeller forming machine |
| CN110918963A (en) * | 2019-10-31 | 2020-03-27 | 成都新航工业科技有限公司 | Casting ladle and casting equipment |
-
2004
- 2004-08-05 CN CN 200410060699 patent/CN1270851C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103042194A (en) * | 2012-12-07 | 2013-04-17 | 重庆和鑫艺术品创作有限公司 | Device and method for preparing empty-shell thin-wall casting |
| CN103042194B (en) * | 2012-12-07 | 2015-08-12 | 重庆和鑫艺术品创作有限公司 | A kind of device and method for the preparation of ghost thin-section casting |
| CN103433479A (en) * | 2013-09-12 | 2013-12-11 | 河南正旭精密制造有限公司 | Thin-wall part casting process and casting cabin |
| CN103433479B (en) * | 2013-09-12 | 2015-07-08 | 河南正旭精密制造有限公司 | Thin-wall part casting process and casting cabin |
| CN105855521A (en) * | 2014-05-09 | 2016-08-17 | 重庆硕龙科技有限公司 | Method and device for gravity casting of light alloy |
| CN106141100A (en) * | 2015-04-14 | 2016-11-23 | 明安国际企业股份有限公司 | The casting method of glof club head and Casting Equipment |
| CN106493344A (en) * | 2016-12-27 | 2017-03-15 | 惠州市朝鲲科技有限公司 | A kind of pressure booster blower impeller forming machine |
| CN106493344B (en) * | 2016-12-27 | 2019-03-01 | 惠州市朝鲲科技有限公司 | A kind of pressure booster blower impeller molding machine |
| CN110918963A (en) * | 2019-10-31 | 2020-03-27 | 成都新航工业科技有限公司 | Casting ladle and casting equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270851C (en) | 2006-08-23 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060823 Termination date: 20120805 |