CN201618829U - Pressure crystallization device for lost foam casting of aluminium alloy - Google Patents
Pressure crystallization device for lost foam casting of aluminium alloy Download PDFInfo
- Publication number
- CN201618829U CN201618829U CN2010201587246U CN201020158724U CN201618829U CN 201618829 U CN201618829 U CN 201618829U CN 2010201587246 U CN2010201587246 U CN 2010201587246U CN 201020158724 U CN201020158724 U CN 201020158724U CN 201618829 U CN201618829 U CN 201618829U
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- aluminium alloy
- lost foam
- foam casting
- friction top
- pressure crystallization
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- Expired - Fee Related
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Abstract
The utility model relates to a pressure crystallization device for lost foam casting of an aluminium alloy, which comprises a conveying platform and a moulding flask conveyed by the conveying platform and is characterized in that the lateral side of the conveying platform is provided with a bracket fixedly combined with a lifting cylinder; and a piston rod of the lifting cylinder is connected with a clamping cap hinged on the bracket. The utility model not only can effectively suppress eduction of a pinhole and reduces the pinhole degree, but also can avoid the defect that gas converges toward oxidizing slags to increase the slag eye. Moreover, due to lower cooling speed of a direct gate, the pressure of the gas can also make up for the shrinkage porosity of a casting by the gate.
Description
Technical field
The utility model relates to a kind of aluminium alloy lost foam casting pressure crystallization apparatus, belongs to casting field.
Background technology
Aluminium alloy lost foam is cast because the aluminium liquid of casting wants to make the foam mould fully to liquefy to gasify and the discharge die cavity, and will absorb a large amount of heats in the gasification liquefaction process, for guaranteeing that filling type well has to increase substantially cast and smelting temperature.Some engine foundry goods based on thin-walled usually water temperature than sand mold and improve more than 100 ℃, reach more than 800 degree centigrade.This will bring a series of problem to aluminium alloy.
Aluminium alloy oxidation easily itself is easy at high temperature absorb in a large number the hydrogen in the atmospheric vapour, even sand casting, thicker slightly foundry goods wants not have cinder hole and pin hole all to compare difficulty.When temperature surpasses 750 ℃-760 ℃, the oxidation of aluminium alloy and inhale the hydrogen process and can obviously accelerate.Lost foam casting adopts dry sand to fill, and the dry sand poor thermal conductivity causes the molten metal cooling velocity slow, and the easier hydrogen that makes is fully separated out a large amount of pin holes of generation, hydrogen is adsorbed on oxidizing slag produce bigger slag pore.In addition, aluminium alloy volume contraction when cooling off and solidifying is bigger, and thick place can not get the molten metal meeting of replenishing and produces shrinkage defect.The common sand casting can take the way of chill under thick general goal to eliminate shrinkage porosite.Lost foam casting is because of wanting vibration ramming, and chill is difficult on the foam mould fixing, must prevent shrinkage porosite with other method.Therefore, how addressing the above problem is research object of the present utility model.
The pressure crystallization generally mo(U)ld face after watering applies compressed air or nitrogen pressure about 0.5MPa, finishes until casting solidification.Because the down gate cooling rate is slower, gas pressure can also be remedied the shrinkage porosite of foundry goods by cast gate.
Summary of the invention
The purpose of this utility model is to provide a kind of can effectively reduce the good aluminium alloy lost foam casting pressure crystallization apparatus of pin hole and cinder hole and casting effect.
Of the present utility model being characterised in that: a kind of aluminium alloy lost foam casting pressure crystallization apparatus, comprise delivery platform and the sandbox that transmits through delivery platform, it is characterized in that: described delivery platform side is provided with the support that is consolidated with hoist cylinder, and described hoist cylinder piston rod is connected with friction top on being hinged on support.
Advantage of the present utility model: the utility model can not only be suppressed separating out of hydrogen pin hole effectively, reduce pinhole rate, can also prevent that gas from compiling the defective that increases cinder hole to oxidizing slag, and because the down gate cooling rate is slower, gas pressure can also be remedied the shrinkage porosite of foundry goods by cast gate.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
With reference to figure 1, a kind of aluminium alloy lost foam casting pressure crystallization apparatus, comprise delivery platform 1 and through the sandbox 2 of delivery platform 1 transmission, described delivery platform 1 side is provided with the support 4 that is consolidated with hoist cylinder 3, described hoist cylinder piston rod 5 is connected with friction top 6 on being hinged on support 4.
Above-mentioned friction top 6 tops are provided with the bracing frame 8 that is consolidated with clamping cylinder 7, and described clamping cylinder piston rod 9 is hinged with an end of transiting rod 10, and the other end of described transiting rod 10 is hinged with the clamp jaw 11 that is hinged on the friction top 6.
Above-mentioned friction top 6 tops also are provided with air inlet magnetic valve 12 and the exhaust solenoid valve 13 in order to the control air delivering pipeline.
Above-mentioned friction top 6 inner chambers also are provided with in order to the silicone rubber O-ring 14 of sealing friction top 6 with sandbox 2 faying face gaps.
The specific implementation process is as follows:
1, sandbox 2 is pushed into the operating position through delivery platform 1, this moment, friction top 6 was stand up position.
2, behind the cast sandbox, hoist cylinder 3 piston rods 5 stretch out, and driving friction top is the center rotation with the A point, and the plane coincide on friction top 6 lower planes and sandbox 2.
3, clamping cylinder piston rod 9 stretches out, and driving clamp jaw 11 and transiting rod 10 is that the center of circle is rotated counterclockwise with C, blocks the lower edge of sandbox 2 tops until clamp jaw 11.
4, air inlet magnetic valve 12 is opened, and introduces compressed air or nitrogen about 0.5MPa rapidly, and the silicone rubber O-ring 14 that is arranged in friction top 6 inner chambers flicks rapidly, has sealed the gap of last lower plane, and pressurize is until aluminum alloy solidification then.
5, air inlet magnetic valve 12 cuts out, and exhaust solenoid valve 13 is opened and sandbox unloaded be depressed into normal pressure.
6, clamping cylinder piston rod 9 withdrawal, after clamp jaw 11 is opened, 5 withdrawals of hoist cylinder piston rod, friction top 6 is opened for center of circle clockwise direction with A.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (4)
1. aluminium alloy lost foam casting pressure crystallization apparatus, comprise delivery platform and the sandbox that transmits through delivery platform, it is characterized in that: described delivery platform side is provided with the support that is consolidated with hoist cylinder, and described hoist cylinder piston rod is connected with friction top on being hinged on support.
2. aluminium alloy lost foam casting pressure crystallization apparatus according to claim 1, it is characterized in that: described friction top top is provided with the bracing frame that is consolidated with clamping cylinder, one end of described clamping cylinder piston rod and transiting rod is hinged, and the other end of described transiting rod is hinged with the clamp jaw that is hinged on the friction top.
3. aluminium alloy lost foam casting pressure crystallization apparatus according to claim 1 and 2 is characterized in that: described friction top top also is provided with air inlet magnetic valve and the exhaust solenoid valve in order to the control air delivering pipeline.
4. aluminium alloy lost foam casting pressure crystallization apparatus according to claim 3 is characterized in that: described friction top inner chamber also is provided with the silicone rubber O-ring in order to sealing friction top and sandbox faying face gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201587246U CN201618829U (en) | 2010-04-14 | 2010-04-14 | Pressure crystallization device for lost foam casting of aluminium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201587246U CN201618829U (en) | 2010-04-14 | 2010-04-14 | Pressure crystallization device for lost foam casting of aluminium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201618829U true CN201618829U (en) | 2010-11-03 |
Family
ID=43022287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201587246U Expired - Fee Related CN201618829U (en) | 2010-04-14 | 2010-04-14 | Pressure crystallization device for lost foam casting of aluminium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201618829U (en) |
-
2010
- 2010-04-14 CN CN2010201587246U patent/CN201618829U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUJIAN JU'NENG MACHINERY MANUFACTURING CO., LTD. Free format text: FORMER OWNER: FUQING LONGTAI MACHINE CO., LTD. Effective date: 20120910 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 350313 FUZHOU, FUJIAN PROVINCE TO: 350500 FUZHOU, FUJIAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120910 Address after: Fuxing Road Aojiang industrial zone of Lianjiang County, Fuzhou City, Fujian province 350500 Patentee after: Fujian Ju'neng Machinery Manufacturing Co., Ltd. Address before: 350313 109 harem, Haikou Town, Fujian, Fuzhou Patentee before: Fuqing Longtai Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20170414 |