CN202097393U - Oxygen-free piston casting device - Google Patents
Oxygen-free piston casting device Download PDFInfo
- Publication number
- CN202097393U CN202097393U CN2011201491892U CN201120149189U CN202097393U CN 202097393 U CN202097393 U CN 202097393U CN 2011201491892 U CN2011201491892 U CN 2011201491892U CN 201120149189 U CN201120149189 U CN 201120149189U CN 202097393 U CN202097393 U CN 202097393U
- Authority
- CN
- China
- Prior art keywords
- piston
- casting
- mold
- inert gas
- die cavity
- 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 - Fee Related
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses an oxygen-free piston casting device which belongs to the field of manufacture of automobile parts, and provides the oxygen-free piston casting device to improve internal quality of piston castings and solve the problems that oxides and nests are easy to generate in an existing gravitational piston casting device. The oxygen-free piston casting device comprises a heating device, a casting mould, a casting machine, a cavity, a casting gate, a cooling device and an inert gas filling device, wherein the inert gas filling device is connected with the cavity, air no longer exists in the cavity by operating the inert gas filling device, high-temperature liquid aluminum no longer reacts with oxygen in air when poured into the cavity, and thereby occurrence of oxides and nests inside a finished product is decreased greatly, and internal quality of piston castings and quality of the piston castings are improved.
Description
Technical field
The utility model belongs to the auto parts and components manufacture field, is specifically related to a kind of casting for piston device, particularly a kind of anaerobic casting device of piston.
Background technology
The general gravitational casting of automobile engine piston (GDC) mode now.Gravitational casting is meant pouring metal melt in casting mold, and the gravity through its molten metal self flows into mold cavity and fills the process that die cavity obtains foundry goods.The gravitational casting of broad sense comprises sand casting, metal mold casting, model casting, lost foam casting, mud die cast etc.; The gravitational casting of narrow sense specially refers to the metal mold casting.Al-alloy metal mold casting method is particularly useful for producing automobile engine cylinder-body, cylinder cap and piston etc. owing to advantages such as its productivity ratio is high, work situation cleans, cast(ing) surface is bright and clean are widely used.
The metal mold gravity casting apparatus structure is various informative.By version, but can be divided into fixed and the tilting type dual mode.Tilting type metal mold gravity casting machine adopts the inclining rotary mechanism of the adjustable-speed of verting, and casting process is accomplished in speed change is rotated; By the purposes form, can be divided into special-purpose metal mold casting machine and universal metal mold casting machine; Press the power form, can be divided into manual, pneumatic, electronic and hydraulic pressure metal mold casting machine.Some manufacturers manufacture and design special-purpose metal type Gravity casting machines according to product and user's requirement, like gravity-diecasting machines such as aluminium head, aluminum cylinder, aluminium piston, aluminium inlet manifold.
For satisfying technological design, adapt in enormous quantities, high-quality piston foundry goods, piston gravitational casting equipment generally comprises metallic type structure, gas extraction system, retaining mechanism, cooling system, bindiny mechanism and foundry goods ejecting mechanism.At present when using casting for piston apparatus for casting piston; Earlier be preheating to 300 ℃ to mold with heater; Restart casting machine and make mold closed, watered 735 ℃ high temperature aluminum liquid in the dissolving stove with pony ladle then, be poured into mold cavity through mould soup mouth; High temperature aluminum liquid is filled after mold cavity finishes, and starts cooling device with but coagulation forming of die cavity aluminium liquid cooling.Though high temperature aluminum liquid is when filling mold cavity; The air of mold cavity inside is along with the filling of aluminium liquid will slowly be driven out of through gas extraction system; But because the temperature of aluminium liquid is up to 735 ℃; Will be rapidly before the inner air of mold cavity is discharged as yet and aluminium liquid generation oxidation reaction generation oxide, make the piston foundry goods inner inclusion of coagulation forming one deck oxide, and the nest hole appear in internal piston easily.
The subscale of the piston goods that gravity foundry technology obtains and the probability of happening of nest hole overgauge value are about 3%～5%; Oxide in the piston metallographic structure and nest hole can reduce the compactness of internal piston tissue; Reduce the intensity of piston goods; Influence the quality of piston foundry goods, cause piston to break when serious, engine can not be worked.
The utility model content
In order to improve the quality of piston foundry goods; The utility model is from reducing the inner incidence in oxide and nest hole, the compactness of raising internal piston tissue of producing of piston goods; Through concentrated research; The utility model provides a kind of automobile engine casting for piston device, and it is that mode through " anaerobic casting " realizes casting for piston, therefore is called piston anaerobic casting device again.The piston anaerobic casting device that the utility model provides, it comprises heater, mold, casting machine, die cavity, mold soup mouth, cooling device, casting machine top is connected with heater; Heater top is mold; Mold is made up of main mould and two backforms, constitutes die cavity between main mould and two backforms, and mold soup mouth is between two backforms; Mold soup mouth communicates with die cavity; Cooling device is that with the difference of the casting for piston device of present use the piston anaerobic casting device of the utility model also comprises the inert gas filling device between mold and heater.Exactly because the existence of inert gas filling device; Make die cavity inside not have air; High temperature aluminum liquid greatly reduces the inner incidence that produces oxide and nest hole of piston goods not in meeting and airborne oxygen generation oxidation reaction, improves the quality of piston foundry goods.
The utility model has carried out preferably the structure of inert gas filling device.A preferred embodiment as the utility model; The inert gas filling device of the utility model; Can form by caisson, conveyance conduit and flow control system; The inert gas conveyance conduit is connected with die cavity, through the adjusting of flow control system, and the transporting velocity and the flow of control inert gas.From convenient operation, be easy to control the inert gas feed flow, the utility model has carried out preferably above-mentioned inert gas filling device again.Further preferably; The inert gas filling device of the utility model comprises caisson, electric control gear, depressurized system, flow control system, conveyance conduit; Caisson in this inert gas filling device is connected through the both sides of the die cavity in conveyance conduit and the casting for piston device; After inert gas enters into die cavity from the both sides of die cavity like this; The inner air of die cavity is discharged through mold soup mouth, along the inert gas throughput direction, is disposed with electric control gear, depressurized system and flow control system on the conveyance conduit.Electric control gear is used to control the inert gas filling time; Depressurized system and flow control system are respectively applied for adjustment required pressure and flow; With inert gas quantity delivered, service time and the speed of assurance mold cavity, thereby reach the purpose of controlling the inner anaerobic state of die cavity.
When using the piston anaerobic casting device of the utility model; Between cast high temperature aluminum liquid; The electric-control system that starts in the inert gas filling device can fully be discharged the air in the die cavity mold cavity inflation 3-10 second, and meanwhile, high temperature aluminum liquid is poured into mold cavity through mold soup mouth; The time that control aluminium liquid is poured into die cavity is at inert gas is filled 3-10 within the time of second, starts cooling device at last to but coagulation forming of die cavity aluminium liquid cooling.Since high temperature aluminum liquid when filling die cavity not with mold cavity in airborne oxygen react, reduced the generation of oxide and the appearance in nest hole.Length * the degree of depth of piston goods subscale is less than 1.0 * 0.5mm, and inner 1 the nest bore dia of piston goods is less than 0.5mm, and the filling of inert gas does not have influence on the al alloy component in the piston yet.
In a word; The piston anaerobic casting device that the utility model provides compared with prior art has following outstanding advantage: the subscale of the piston goods of pot type piston gravitational casting device casting and the probability of happening of nest hole overgauge value have 3%～5% approximately; The subscale of the piston goods that the piston anaerobic casting device that adopts the utility model to provide is produced and nest hole are close to 0 greater than the probability of happening of setting; Improved the inside quality of piston goods greatly; Improve the compactness of internal piston tissue, improved the intensity of piston goods and the quality of piston foundry goods, thereby obtained the piston foundry goods of good inside quality.
Description of drawings
Fig. 1 is the structural representation of the utility model piston anaerobic casting device.In Fig. 1,1 is heater, and 2 is mold, and 3 is casting machine, and 4 is electric control gear, and 5 is die cavity, and 6 is mold soup mouth, and 7 is cooling device, and 8 is caisson, and 9 is depressurized system, and 10 is flow control system, and 11 is conveyance conduit.
The specific embodiment
Below in conjunction with accompanying drawing, further describe the utility model through specific embodiment, but the utility model is not limited only to following examples.In the scope of the utility model or in the content that does not break away from the utility model, spirit and scope; The described piston anaerobic of the utility model casting machine is carried out to reduced scale or expansion, suitably improves, replaces the structure of building block and/or the annexation between the building block; Will become apparent to those skilled in the art that they all are regarded as is included within the utility model scope.
Fig. 1 is the structural representation of the utility model piston anaerobic casting device.In Fig. 1, can find out that the utility model piston anaerobic casting device comprises heater 1, mold 2, casting machine 3, electric control gear 4, die cavity 5, mold soup mouth 6, cooling device 7, caisson 8, depressurized system 9, flow control system 10 and conveyance conduit 11.Casting machine 3 tops are connected with heater 1; Heater 1 top is mold 2, and mold 2 is made up of main mould and two backforms, constitutes die cavity 5 between main mould and two backforms; Mold soup mouth 6 is between two backforms, and cooling device 7 is between mold 2 and heater 1; Caisson 8, electric control gear 4, depressurized system 9, flow control system 10 and conveyance conduit 11 constitute the inert gas filling device of the utility model piston anaerobic casting device; Caisson 8 in the inert gas filling device is connected through the both sides of conveyance conduit 11 with die cavity 5, is disposed with electric control gear 4, depressurized system 9 and flow control system 10 on the conveyance conduit 11.
After inert gas entered into die cavity from the both sides of die cavity like this, the inner air of die cavity was discharged through mold soup mouth, is disposed with electric control gear, depressurized system and flow control system on the conveyance conduit.Electric control gear is used to control the inert gas filling time; Depressurized system and flow control system are respectively applied for adjustment required pressure and flow; With inert gas quantity delivered, service time and the speed of assurance mold cavity, thereby reach the purpose of controlling the inner anaerobic state of die cavity.
When the piston anaerobic casting device that uses the utility model carries out cast pistons; Earlier be preheating to 300 ℃ to mold 2 with heater 1; Restart casting machine 3 and make mold 2 closures; The 4 pairs of mold cavities of electric-control system 5 that start then in the inert gas filling device were inflated 5 seconds, fully discharged the air in the die cavity; Meanwhile; Be poured into die cavity 5 to 735 ℃ high temperature aluminum liquid through mould soup mouth 6; Control aluminium liquid is poured into the time of die cavity 5 within the 5 second time of inert gas inflation, starts the but coagulation forming of aluminium liquid cooling in 7 pairs of die cavities of cooling device 5 at last and since high temperature aluminum liquid when filling die cavity 5 not with die cavity 5 in airborne oxygen generation oxidation reaction; Reduce the generation of oxide and the appearance in nest hole, therefore can obtain the piston foundry goods of good inside quality.Find through detecting; Length * the degree of depth of the piston goods subscale of the piston anaerobic casting device casting of use the utility model is less than 1.0 * 0.5mm; Inner 1 the nest bore dia of piston goods is less than 0.5mm; And the subscale of piston goods and nest hole are close to 0 greater than the probability of happening of setting, have improved the inside quality of piston goods greatly, have improved the compactness of internal piston tissue; Improve the intensity of piston goods and the quality of piston foundry goods, thereby obtained the piston foundry goods of good inside quality.
Claims (3)
1. piston anaerobic casting device, it comprises heater, mold, casting machine, die cavity, mold soup mouth, cooling device, casting machine top is connected with heater; Heater top is mold, and mold is made up of main mould and two backforms, constitutes die cavity between main mould and two backforms; Mold soup mouth is between two backforms; Mold soup mouth communicates with die cavity, and cooling device is characterized in that it also comprises the inert gas filling device between mold and heater.
2. a kind of piston anaerobic casting device as claimed in claim 1; It is characterized in that described inert gas filling device comprises inertial gas tank, conveyance conduit and flow control system; Inertial gas tank is connected with die cavity through conveyance conduit, and conveyance conduit is connected with flow control system.
3. a kind of piston anaerobic casting device as claimed in claim 2; It is characterized in that described inert gas filling device also comprises electric control gear and depressurized system; Along the inert gas throughput direction, be disposed with the electric control gear, depressurized system and the flow control system that are connected with conveyance conduit on the conveyance conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201491892U CN202097393U (en) | 2011-05-11 | 2011-05-11 | Oxygen-free piston casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201491892U CN202097393U (en) | 2011-05-11 | 2011-05-11 | Oxygen-free piston casting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202097393U true CN202097393U (en) | 2012-01-04 |
Family
ID=45383426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201491892U Expired - Fee Related CN202097393U (en) | 2011-05-11 | 2011-05-11 | Oxygen-free piston casting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202097393U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632219A (en) * | 2012-05-15 | 2012-08-15 | 山东滨州渤海活塞股份有限公司 | Method for casting aluminum piston of gasoline engine |
| CN104962699A (en) * | 2015-07-20 | 2015-10-07 | 柳州市建西机械铸造厂 | Workpiece heat treatment device |
| CN107999721A (en) * | 2016-10-27 | 2018-05-08 | 株式会社沙迪克 | Melting plant |
-
2011
- 2011-05-11 CN CN2011201491892U patent/CN202097393U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632219A (en) * | 2012-05-15 | 2012-08-15 | 山东滨州渤海活塞股份有限公司 | Method for casting aluminum piston of gasoline engine |
| CN104962699A (en) * | 2015-07-20 | 2015-10-07 | 柳州市建西机械铸造厂 | Workpiece heat treatment device |
| CN107999721A (en) * | 2016-10-27 | 2018-05-08 | 株式会社沙迪克 | Melting plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104550876B (en) | A kind of automotive hub supercharging Casting Equipment and casting method | |
| CN101274361B (en) | Low speed vacuum squeeze casting technology | |
| CN101569924B (en) | High-counter-pressure casting method for high-tensile and high-density aluminum silicon alloy | |
| CN105642866B (en) | A kind of aluminum-alloy wheel metal-mold low-pressure casting shaping crystallization boosting method | |
| CN104190899A (en) | Low-pressure casting mold of melt spinning wheel and process thereof | |
| CN204353455U (en) | A kind of high density supercharging Casting Equipment | |
| CN101028646A (en) | Apparatus and method for casting aluminum-alloy wheel gas pressure | |
| CN201231310Y (en) | Low-segregation large-size ingot obtaining device through quickening the cooling of the bottom, lateral wall | |
| CN104550826A (en) | Die-casting technique of horizontal cold chamber die casting machine | |
| CN103509978B (en) | Heat treatment method for precision casting aluminum alloy | |
| CN202097393U (en) | Oxygen-free piston casting device | |
| CN110373582B (en) | Production process of aluminum alloy ultrathin-wall precise structural part | |
| CN108296468A (en) | A kind of pressure regulation supercharging casting machine fills the casting device and casting method of type High Pressure Solidification with low pressure | |
| CN111069569A (en) | Low-pressure filling type gravity compensation type casting mold and casting method thereof | |
| CN201042733Y (en) | Gas pressure casting device for aluminum alloy wheel | |
| CN105618710B (en) | A kind of Quick-pressurizing method after aluminum-alloy wheel metal-mold low-pressure casting shaping pressurize | |
| CN1323783C (en) | Magnesium alloy hub pressure casting apparatus and method thereof | |
| CN201275611Y (en) | Extrusion casting device | |
| CN102784898B (en) | Local pressurization mechanism and method for producing automobile engine suspension shock insulators by same | |
| CN203155993U (en) | Exhaust type aluminum die-casting die | |
| CN202655594U (en) | In-cavity semi-solid forming device | |
| CN211101530U (en) | Novel pressure casting device | |
| CN211803763U (en) | Low-pressure filling type gravity compensation casting mould | |
| CN204657411U (en) | fast demoulding mould | |
| CN102896291B (en) | Front cover of car air conditioner compressor FS170C and casting method of front cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120104 Termination date: 20170511 |