CN108296469A - A kind of counter-pressure casting machine - Google Patents
A kind of counter-pressure casting machine Download PDFInfo
- Publication number
- CN108296469A CN108296469A CN201810057533.1A CN201810057533A CN108296469A CN 108296469 A CN108296469 A CN 108296469A CN 201810057533 A CN201810057533 A CN 201810057533A CN 108296469 A CN108296469 A CN 108296469A
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- China
- Prior art keywords
- solenoid valve
- vacuum cover
- crucible
- holding furnace
- counter
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The invention discloses a kind of counter-pressure casting machines, including holding furnace, the holding furnace is internally provided with crucible, the crucible is internally provided with stalk, and the crucible top is equipped with inner vacuum cover, external vacuum cover is equipped on the outside of the inner vacuum cover, the external vacuum, which is provide with, to be placed at the top of holding furnace, external vacuum cover side is equipped with the first vacuum pump, and first vacuum pump bottom is equipped with air accumulator, and the holding furnace other side is equipped with the second vacuum pump.The present invention is by being equipped with air pressure adjustment solenoid valve, air pressure adjustment solenoid valve is connected to holding furnace and external vacuum cover respectively by snorkel, holding furnace that can be quick and easy is adjusted to consistent with external vacuum cover air pressure inside, the air pressure that the present invention passes through reduction inner vacuum cover, the method that counter-pressure casting technique before change increases pressure into crucible, in comparison molten metal rising fluctuation is minimum, and casting process is more stablized.
Description
Technical field
The present invention relates to casting field, more particularly to a kind of counter-pressure casting machine.
Background technology
Currently, common aluminium alloy casting device has air injection machine, Gravity casting machines, height in our daily productions
All there is the defects of setting rate is slow, and formation crystal grain is big, and consistency is not high, it is complicated, thin-walled to be unsuitable for production in pressure casting machine etc.
Aluminium alloy castings.Counter-pressure casting is a kind of casting technique of pressure lower charging type and solidification and crystallization, the technique will " can rate controlling fill
Type " and " pressure crystallizing " are combined, can get best filling velocity and it is top quality fill type molten metal, so that product has been imparted
Not with permanent mold casting, the tissue of low pressure casting product and performance, counter-pressure casting machine currently on the market is mostly by crucible
The process that the middle method for increasing pressure realizes counter-pressure casting, this mode cast pour had in liquid uphill process apparent fluctuation to
Therefore the product for influencing casting it is necessary to solve the above problems to invent a kind of counter-pressure casting machine.
Invention content
The purpose of the present invention is to provide a kind of counter-pressure casting machines, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides the following technical solutions：A kind of counter-pressure casting machine, including holding furnace, it is described
Holding furnace is internally provided with crucible, and the crucible is internally provided with stalk, and the crucible top is equipped with inner vacuum cover, the inside
External vacuum cover is equipped on the outside of vacuum (-tight) housing, the external vacuum, which is provide with, to be placed at the top of holding furnace, and external vacuum cover side is set
There are the first vacuum pump, first vacuum pump bottom to be equipped with air accumulator, the holding furnace other side is equipped with the second vacuum pump.
Preferably, supporting rod is equipped between the crucible and holding furnace, the crucible top is equipped with filling opening, the liquid feeding
Mouth is set to inner vacuum cover both sides.
Preferably, the stalk is set as two-tube stalk, and graphite-pipe, outside setting are set as inside the stalk
For quartz ampoule.
Preferably, the inner vacuum cover is internally provided with lower mold, and the lower mold bottom is equipped with pedestal, and the pedestal is set
It is placed in inner vacuum cover inner wall bottom, the lower mold both sides are equipped with preheating table, and the preheating table is internally provided with heating coil,
The lower die top is equipped with upper mold, and electric pushrod is equipped between the upper mold and lower mold.
Preferably, the stalk is connected to through crucible with lower mold, and film is equipped with inside the lower mold and upper mold
Chamber.
Preferably, the air accumulator is internally provided with inert gas.
Preferably, the holding furnace and external vacuum cover side are communicated with air pressure adjustment solenoid valve, institute by snorkel
It states and is equipped with the first solenoid valve at the top of air pressure adjustment solenoid valve, second solenoid valve, the air pressure are equipped at the top of first solenoid valve
Electromagnetic valve for adjusting bottom is equipped with third solenoid valve, and air pressure adjustment solenoid valve side is equipped with the 4th solenoid valve, first electricity
Magnet valve is connected to external vacuum cover and the 4th solenoid valve respectively by snorkel, the second solenoid valve by snorkel respectively with
External vacuum cover and the connection of the first vacuum pump, the third solenoid valve are connected with crucible and the 4th solenoid valve respectively by snorkel
Logical, the 4th solenoid valve is connected to by snorkel with air accumulator, and the 5th solenoid valve, institute are communicated at the top of the inner vacuum cover
It states the 5th solenoid valve to be set on the outside of external vacuum cover, the inner vacuum cover and crucible side are communicated with the by snorkel
Six solenoid valves, the 6th solenoid valve are connected to by snorkel with the second vacuum pump.
Preferably, it is equipped with baroceptor inside the inner vacuum cover and crucible, the baroceptor model is set
It is set to 24PC.
Preferably, the holding furnace surface is equipped with control panel, and the control panel side is equipped with display screen, the control
Air pressure adjustment configuration switch is equipped at the top of panel, the control panel includes control switch, control unit, signal receiver signal
Processor and signal transmission device, the control panel with display screen, air pressure adjustment configuration switch, heating coil, electric pushrod,
First vacuum pump, the second vacuum pump, air pressure adjustment solenoid valve, the first solenoid valve, second solenoid valve, third solenoid valve, the 4th electricity
Magnet valve, the 5th solenoid valve, the 6th solenoid valve and baroceptor are electrically connected.
The technique effect and advantage of the present invention：By being equipped with air pressure adjustment solenoid valve, air pressure adjustment solenoid valve passes through ventilation
Pipe is connected to holding furnace and external vacuum cover respectively, and holding furnace and external vacuum cover air pressure inside that can be quick and easy be adjusted to
Unanimously, will be by being equipped with the first vacuum pump, the second vacuum pump and air accumulator, the first vacuum pump passes through the first solenoid valve, the second electricity
Magnet valve and third solenoid valve are connected to holding furnace and external vacuum cover respectively, can will be in inside holding furnace and external vacuum cover
Foundry work is carried out after vacuum state, crucible and inner vacuum cover are in vacuum state by the second vacuum pump by the 6th solenoid valve
After carry out foundry work, air accumulator by the first solenoid valve, third solenoid valve and the 4th solenoid valve respectively with holding furnace and outside
Vacuum (-tight) housing can enter inner vacuum cover to being filled with inert gas in holding furnace and external vacuum cover to avoid ambient atmos
In casting process is impacted, ensure that the integrality of cast article in casting technique, reduce the generation of interiors of products bubble,
Inner vacuum cover is in communication with the outside by the 5th solenoid valve, to make the air pressure of inner vacuum cover be less than the air pressure in crucible, crucible
Interior casting is poured the variation that liquid is under pressure and is entered by stalk in the inner cavity of lower mold and upper mold, the process cast,
The method that counter-pressure casting technique before change increases pressure into crucible, in comparison molten metal, which rises, fluctuates minimum, casting
Process is made more to stablize.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the inner vacuum cover structure schematic diagram of the present invention；
Fig. 3 is the overall structure side view of the present invention；
In figure：1 holding furnace, 11 control panels, 12 display screens, 13 air pressure adjustment configuration switch, 2 crucibles, 21 supporting rods, 22 liquid feedings
Mouth, 3 stalks, 4 inner vacuum covers, 41 times molds, 42 pedestals, 43 preheating tables, 44 upper molds, 45 electric pushrods, 5 external vacuums
Cover, 6 first vacuum pumps, 7 air accumulators, 8 second vacuum pumps, 9 air pressure adjustment solenoid valves, 91 first solenoid valves, 92 second solenoid valves,
93 third solenoid valves, 94 the 4th solenoid valves, 95 the 5th solenoid valves, 96 the 6th solenoid valves.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of counter-pressure casting machines as shown in Figure 1, including holding furnace 1, the holding furnace 1 to be internally provided with
Crucible 2, the crucible 2 are internally provided with stalk 3, and 2 top of the crucible is equipped with inner vacuum cover 4, outside the inner vacuum cover 4
Side is equipped with external vacuum cover 5, and the external vacuum cover 5 is set to the top of holding furnace 1, and 5 side of external vacuum cover is equipped with the
One vacuum pump 6,6 bottom of the first vacuum pump are equipped with air accumulator 7, and 1 other side of the holding furnace is equipped with the second vacuum pump 8.
Supporting rod 21 is equipped between the crucible 2 and holding furnace 1,2 top of the crucible is equipped with filling opening 22, the liquid feeding
Mouth 22 is set to 4 both sides of inner vacuum cover, and the stalk 3 is set as two-tube stalk, stone is set as inside the stalk 3
Mo Guan, outside are set as quartz ampoule, and the inner vacuum cover 4 is internally provided with lower mold 41, and 41 bottom of lower mold is equipped with bottom
Seat 42, the pedestal 42 is set to 4 inner wall bottom of inner vacuum cover, and 41 both sides of lower mold are equipped with preheating table 43, described
Preheating table 43 is internally provided with heating coil, and 41 top of the lower mold is equipped with upper mold 44, the upper mold 44 and lower mold 41
Between be equipped with electric pushrod 45, the stalk 3 is connected to through crucible 2 with lower mold 41, the lower mold 41 and upper mold 44
Inside is equipped with membrane cavity, and the air accumulator 7 is internally provided with inert gas.
The holding furnace 1 and 5 side of external vacuum cover are communicated with air pressure adjustment solenoid valve 9, the gas by snorkel
9 top of electromagnetic valve for adjusting is pressed to be equipped with the first solenoid valve 91, first solenoid valve, 91 top is equipped with second solenoid valve 92, the gas
9 bottom of electromagnetic valve for adjusting is pressed to be equipped with third solenoid valve 93,9 side of air pressure adjustment solenoid valve is equipped with the 4th solenoid valve 94, institute
It states the first solenoid valve 91 to be connected to external vacuum cover 5 and the 4th solenoid valve 94 respectively by snorkel, the second solenoid valve 92
Be connected to respectively with external vacuum cover 5 and the first vacuum pump 6 by snorkel, the third solenoid valve 93 by snorkel respectively with
Crucible 2 is connected to the 4th solenoid valve 94, and the 4th solenoid valve 94 is connected to by snorkel with air accumulator 7, the inner vacuum
4 top of cover is communicated with the 5th solenoid valve 95, and the 5th solenoid valve 95 is set to 5 outside of external vacuum cover, the inner vacuum
Cover 4 and 2 side of crucible are communicated with the 6th solenoid valve 96 by snorkel, and the 6th solenoid valve 96 passes through snorkel and second
Vacuum pump 8 is connected to, will be by being equipped with the first vacuum pump 6, the second vacuum pump 8 and air accumulator 7, and the first vacuum pump 6 passes through the first electricity
Magnet valve 91, second solenoid valve 92 and third solenoid valve 93 are connected to holding furnace 1 and external vacuum cover 5 respectively, can be by holding furnace 1
Foundry work is carried out after vacuum state with the inside of external vacuum cover 5, and the second vacuum pump 8 is by the 6th solenoid valve 96 by crucible
2 and inner vacuum cover 4 be in vacuum state after carry out foundry work, air accumulator 7 passes through the first solenoid valve 91, third solenoid valve 93
It, can be to being filled with inertia in holding furnace 1 and external vacuum cover 5 with the 4th solenoid valve 94 respectively with holding furnace 1 and external vacuum cover 5
Gas can enter in inner vacuum cover 4 to avoid ambient atmos and be impacted to casting process, ensure that in casting technique and cast
The integrality of product reduces the generation of interiors of products bubble, and inner vacuum cover 4 is in communication with the outside by the 5th solenoid valve 95, to
So that the air pressure of inner vacuum cover 4 is less than the air pressure in crucible, the casting in crucible pour variation that liquid is under pressure by stalk 3 into
In the inner cavity for entering lower mold 41 and upper mold 44, the process cast, the counter-pressure casting technique before changing increases into crucible
It pressurizes strong method, in comparison molten metal rises that fluctuation is minimum, and casting process is more stablized.
Baroceptor is equipped with inside the inner vacuum cover 4 and crucible 2, the baroceptor model is set as
24PC, 1 surface of the holding furnace are equipped with control panel 11, and 11 side of the control panel is equipped with display screen 12, the control plane
11 top of plate is equipped with air pressure adjustment configuration switch 13, and the control panel 11 includes control switch, control unit, signal receiver
Signal processor and signal transmission device, the control panel 11 with display screen 12, air pressure adjustment configuration switch 13, heater wire
Circle, electric pushrod 45, the first vacuum pump 6, the second vacuum pump 8, air pressure adjustment solenoid valve 9, the first solenoid valve 91, second solenoid valve
92, third solenoid valve 93, the 4th solenoid valve 94, the 5th solenoid valve 95, the 6th solenoid valve 96 and baroceptor are electrically connected, work
Make personnel and controls different electric elements and electromagnetic valve work by operation and control panel 11, to complete foundry work, and will
Air pressure inside inner vacuum cover 4 and crucible 2 is shown on the display 12.
Operation principle of the present invention：Staff controls different electric elements and solenoid valve work by operation and control panel 11
Make, air accumulator 7 is internally provided with inert gas, and the first vacuum pump 6 passes through the first solenoid valve 91, second solenoid valve 92 and third electromagnetism
Valve 93 is connected to holding furnace 1 and external vacuum cover 5 respectively, can holding furnace 1 and 5 inside of external vacuum cover be in vacuum state
After carry out foundry work, after crucible 2 and inner vacuum cover 4 are in vacuum state by the second vacuum pump 8 by the 6th solenoid valve 96
Carry out foundry work, air accumulator 7 by the first solenoid valve 91, third solenoid valve 93 and the 4th solenoid valve 94 respectively with holding furnace 1
It, can be to being filled with inert gas in holding furnace 1 and external vacuum cover 5 with external vacuum cover 5, it can be to avoid in ambient atmos entrance
Casting process is impacted in portion's vacuum (-tight) housing 4, ensure that the integrality of cast article in casting technique, reduces interiors of products gas
Inner vacuum cover 4 is in communication with the outside by the generation of bubble, the 5th solenoid valve 95, to make the air pressure of inner vacuum cover 4 be less than crucible
The inner cavity that the variation that liquid is under pressure enters lower mold 41 and upper mold 44 by stalk 3 is poured in interior air pressure, the casting in crucible
In, the process cast, the method that the counter-pressure casting technique before changing increases pressure into crucible, in comparison metal
Liquid rising fluctuation is minimum, and casting process is more stablized, to complete foundry work, and will be inside inner vacuum cover 4 and crucible 2
Air pressure is shown on the display 12.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (9)
1. a kind of counter-pressure casting machine, including holding furnace（1）, it is characterised in that：The holding furnace（1）It is internally provided with crucible（2）, institute
State crucible（2）It is internally provided with stalk（3）, the crucible（2）Top is equipped with inner vacuum cover（4）, the inner vacuum cover（4）
Outside is equipped with external vacuum cover（5）, the external vacuum cover（5）It is set to holding furnace（1）Top, the external vacuum cover（5）
Side is equipped with the first vacuum pump（6）, first vacuum pump（6）Bottom is equipped with air accumulator（7）, the holding furnace（1）The other side
Equipped with the second vacuum pump（8）.
2. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The crucible（2）With holding furnace（1）Between
Equipped with supporting rod（21）, the crucible（2）Top is equipped with filling opening（22）, the filling opening（22）It is set to inner vacuum cover
（4）Both sides.
3. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The stalk（3）It is set as two-tube liter
Liquid pipe, the stalk（3）Inside is set as graphite-pipe, and outside is set as quartz ampoule.
4. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The inner vacuum cover（4）It is internally provided with
Lower mold（41）, the lower mold（41）Bottom is equipped with pedestal（42）, the pedestal（42）It is set to inner vacuum cover（4）Inner wall
Bottom, the lower mold（41）Both sides are equipped with preheating table（43）, the preheating table（43）It is internally provided with heating coil, under described
Mold（41）Top is equipped with upper mold（44）, the upper mold（44）With lower mold（41）Between be equipped with electric pushrod（45）.
5. a kind of counter-pressure casting machine according to claim 1 or 4, it is characterised in that：The stalk（3）Through crucible
（2）With lower mold（41）Connection, the lower mold（41）And upper mold（44）Inside is equipped with membrane cavity.
6. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The air accumulator（7）It is internally provided with inertia
Gas.
7. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The holding furnace（1）With external vacuum cover
（5）Side is communicated with air pressure adjustment solenoid valve by snorkel（9）, the air pressure adjustment solenoid valve（9）Top is equipped with first
Solenoid valve（91）, first solenoid valve（91）Top is equipped with second solenoid valve（92）, the air pressure adjustment solenoid valve（9）Bottom
Equipped with third solenoid valve（93）, the air pressure adjustment solenoid valve（9）Side is equipped with the 4th solenoid valve（94）, first solenoid valve
（91）By snorkel respectively with external vacuum cover（5）With the 4th solenoid valve（94）Connection, the second solenoid valve（92）Pass through
Snorkel respectively with external vacuum cover（5）With the first vacuum pump（6）Connection, the third solenoid valve（93）Distinguished by snorkel
With crucible（2）With the 4th solenoid valve（94）Connection, the 4th solenoid valve（94）Pass through snorkel and air accumulator（7）Connection, institute
State inner vacuum cover（4）Top is communicated with the 5th solenoid valve（95）, the 5th solenoid valve（95）It is set to external vacuum cover（5）
Outside, the inner vacuum cover（4）And crucible（2）Side is communicated with the 6th solenoid valve by snorkel（96）, the described 6th
Solenoid valve（96）Pass through snorkel and the second vacuum pump（8）Connection.
8. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The inner vacuum cover（4）And crucible（2）
Inside is equipped with baroceptor, and the baroceptor model is set as 24PC.
9. a kind of counter-pressure casting machine according to claim 1, it is characterised in that：The holding furnace（1）Surface is equipped with control
Panel（11）, the control panel（11）Side is equipped with display screen（12）, the control panel（11）Top is equipped with air pressure adjustment
Configuration switch（13）, the control panel（11）Including control switch, control unit, signal receiver signal processor and signal
Transmitter, the control panel（11）And display screen（12）, air pressure adjustment configuration switch（13）, heating coil, electric pushrod
（45）, the first vacuum pump（6）, the second vacuum pump（8）, air pressure adjustment solenoid valve（9）, the first solenoid valve（91）, second solenoid valve
（92）, third solenoid valve（93）, the 4th solenoid valve（94）, the 5th solenoid valve（95）, the 6th solenoid valve（96）And baroceptor
It is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057533.1A CN108296469A (en) | 2018-01-22 | 2018-01-22 | A kind of counter-pressure casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057533.1A CN108296469A (en) | 2018-01-22 | 2018-01-22 | A kind of counter-pressure casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108296469A true CN108296469A (en) | 2018-07-20 |
Family
ID=62865646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810057533.1A Pending CN108296469A (en) | 2018-01-22 | 2018-01-22 | A kind of counter-pressure casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108296469A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482842A (en) * | 2018-12-07 | 2019-03-19 | 中国兵器科学研究院宁波分院 | A kind of counter-pressure casting method of steel-aluminum compound structure aluminium alloy active wheel assembly blank |
| WO2022127431A1 (en) * | 2020-12-18 | 2022-06-23 | 大连交通大学 | Differential-pressure antigravity filling and solidifying device under action of external field and process method |
| CN114850453A (en) * | 2022-05-13 | 2022-08-05 | 上海皓越电炉技术有限公司 | Pressure difference impregnation equipment |
-
2018
- 2018-01-22 CN CN201810057533.1A patent/CN108296469A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482842A (en) * | 2018-12-07 | 2019-03-19 | 中国兵器科学研究院宁波分院 | A kind of counter-pressure casting method of steel-aluminum compound structure aluminium alloy active wheel assembly blank |
| WO2022127431A1 (en) * | 2020-12-18 | 2022-06-23 | 大连交通大学 | Differential-pressure antigravity filling and solidifying device under action of external field and process method |
| CN114850453A (en) * | 2022-05-13 | 2022-08-05 | 上海皓越电炉技术有限公司 | Pressure difference impregnation equipment |
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Application publication date: 20180720 |