CN110172600A - A kind of device and application method of cast aluminium alloy gold melt compound degasification and crystal grain refinement - Google Patents
A kind of device and application method of cast aluminium alloy gold melt compound degasification and crystal grain refinement Download PDFInfo
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- CN110172600A CN110172600A CN201910548967.6A CN201910548967A CN110172600A CN 110172600 A CN110172600 A CN 110172600A CN 201910548967 A CN201910548967 A CN 201910548967A CN 110172600 A CN110172600 A CN 110172600A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
- C22B9/026—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves by acoustic waves, e.g. supersonic waves
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
- C22B9/055—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses the device and application method of a kind of cast aluminium alloy gold melt compound degasification and crystal grain refinement, including smelting furnace and bell, smelting furnace is equipped with furnace cover lifting system；Run through in the middle part of bell by elevated-temperature seal bearing and is connected with shaft, rotating electric machine and rotation degassing rotor are connected at the top and bottom of shaft respectively, the ar gas passage being connected to rotation degassing rotor is equipped with inside shaft, the other end of ar gas passage is connected with argon gas air supply unit, it is located at shaft surrounding on bell and is also uniformly provided with ultrasonic transmitter, also extends through on bell equipped with vacuum table；Exhaust tube with outward extension is also connected on smelting furnace, the other end of exhaust tube is connect by exhaust gas cooling system with negative pressure pump；The present invention also provides the application methods of above-mentioned apparatus.The present invention combines two kinds of degasification modes of degasification and vacuum degassing of rotation, and degassing effect is good, and is refined by ultrasonic wave to crystal grain, realizes the complex function of cleaning molten and crystal grain refinement, and the device is easy to use, easy to operate.
Description
Technical field
The present invention relates to cleaning molten in forming process in non-ferrous metals casting and Grain Refinement device, specially one
The compound degasification of kind cast aluminium alloy gold melt and crystal grain refinement device and application method.
Background technique
Cast aluminium alloy gold has many advantages, such as that specific strength is high, density is low, casting formability is good, excellent heat conductivity, is widely applied
In the industrial productions such as Aeronautics and Astronautics and engine of motor vehicle piston, gray iron, bracket.But aluminium alloy is in fusion process
The middle soluble a large amount of hydrogen atom of liquid melts so that hydrogen content solidification state is tens times high in melt, and increases with temperature and is increased
Add more, so that forming pin hole, inclusion defect in casting, reduces its mechanical performance.Furthermore aluminium alloy in casting process, because
For melt, setting time is longer in a mold, coarse grain easy to form, will also result in mechanical performance decline.In conclusion aluminium
Alloy melt degassing and purifying and solidification crystal grain refinement are the important guarantee measure of production high-quality casting, and are to improve casting synthesis
The conventional means of performance.
It therefore, is acquisition high-quality Al alloy components, it is necessary to it studies and simultaneously uses advanced aluminum melt degassing processing method,
Remove the gas and field trash in molten aluminum.The main means of degasification at present and crystal grain refinement are chemical flux (carbon trichloride C2Cl6)
Degasification and noble metal crystal grain refinement, or by rotary blowing inert gas, but use the degassing efficiency of chemical flux low, lead to
The degassing effect for entering inert gas is unstable, and effect is bad when bubble size is big or generates conjunction bubble.
Depassing unit currently used for aluminum melt is mostly made of vacuum system and vacuum hearth, by vacuum plant to aluminium
Alloy melt is vacuumized to reach and reduce melt hydrogen content, reduces the purpose of Casting Blowholes, but single vacuum is removed
Device of air degasification speed is slow, and waste of energy, degassing effect is not good enough, and since prolonged degasification causes alloy part in melt
Element is burnt, to influence alloying component, is not suitable for industrialized production.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of compound degasification of cast aluminium alloy gold melt and crystalline substance
The device and application method of grain refinement, the device will rotate degasification and vacuum degassing and combine, and using ultrasonic wave to crystal grain into
Row refinement, structurally reasonable, degassing effect is good, realizes the complex function of cleaning molten and crystal grain refinement；The device makes simultaneously
It is simple with method, the production cycle can be effectively shortened, energy conservation and environmental protection.
The present invention provides the device of a kind of cast aluminium alloy gold melt compound degasification and crystal grain refinement, including apparatus main body；
Apparatus main body includes the smelting furnace and bell worked in coordination, and is additionally provided on smelting furnace for controlling furnace cover lifting
Furnace cover lifting system；
It is connect at the top of shaft with rotating electric machine, rotating shaft bottom by elevated-temperature seal bearing through shaft is connected in the middle part of bell
Portion is connected with rotation degassing rotor, and shaft is hollow structure, and is internally provided with the ar gas passage being connected to rotation degassing rotor,
The other end of ar gas passage is connected with argon gas air supply unit, is located at shaft surrounding on bell and is also evenly arranged with ultrasound emission
Device, ultrasonic transmitter pass through bell and extend into smelting furnace, also extend through on bell and be provided with vacuum table；
Outwardly extending exhaust tube is also provided with and communicated on smelting furnace, the other end of exhaust tube is connected with exhaust gas cooling system
System, the other end of exhaust gas cooling system are connect with negative pressure pump.
Preferably, furnace wall is close to inside smelting furnace and is provided with steel crucibles, it is equal at the connecting portion of steel crucibles and bell
It is provided with the first high-temperature seal ring, is correspondingly arranged on positioning and locking bolt for fixing on smelting furnace outside and bell.
Preferably, furnace cover lifting system is electric pushrod, and the top of electric pushrod is connect by link block with bell.
Preferably, be provided with driven wheel at the top of shaft, be provided with driving wheel on the output shaft of rotating electric machine, driving wheel and from
Driving wheel is connected by belt.
Preferably, argon gas air supply unit is argon bottle, is provided with pressure valve and pressure gauge on argon bottle.
Preferably, exhaust gas cooling system is made of cooling tube and cooling bath, and one end of cooling tube is connected to exhaust tube, another
End is connected to negative pressure pump, and cooling tube immersion is placed in the cooling bath of coolant liquid.
Preferably, cooling tube structure in the shape of a spiral.
Preferably, it is 1/10th of smelting furnace height that ultrasonic transmitter, which protrudes into the length of smelting furnace,.
Preferably, the position that ultrasonic transmitter is connect with bell is provided with the second high-temperature seal ring.
The present invention also protects the application method of above-mentioned apparatus, comprising the following steps:
Step 1: opening bell, aluminium alloy is placed in smelting furnace, using smelting furnace by aluminum alloy melting, and heating direct
To temperature of aluminum liquid be 700~740 DEG C when keep the temperature；
Step 2: closing bell, locking positioning clamping screw is tightly connected bell and melt furnace, starts negative pressure pump, to
Starting rotation degassing rotor when negative pressure reaches -0.06MPa~-0.1MPa in smelting furnace, revolving speed are 800~1500r/min；Simultaneously
It is blown by ar gas passage, air pressure is 0.3~0.6MPa；10~15min is kept, rotation degassing rotor is then shut off, after
Continuation of insurance holds negative pressure and keeps 15~20min；
Step 3: opening ultrasonic transmitter after temperature of aluminum liquid is 680~730 DEG C, ultrasonic wave contact protrudes into liquid level 10
~20mm, ultrasonic power 2000W, ultrasonic time are 5~10min, negative pressure pump are then shut off, after discharge degree, by melt
740 DEG C~780 DEG C are warming up to, bell is opened and carries out casting components.
Compared with prior art, the invention has the following advantages:
1, structure of the invention is reasonable, easy to operate, and by rotation degassing rotor and negative pressure pump will rotate degasification and vacuum is removed
Two kinds of degasification modes of gas combine, and degasification can be completed using the soaking time of traditional degassing process process, and degassing effect is good, consumption
When it is short, it is energy saving；
2, the present invention refines crystal grain by the ultrasonic wave that multiple ultrasonic transmitters emit, and eliminates clipped wire refinement
Agent effectively reduces cost, realizes the complex function of cleaning molten and crystal grain refinement；
3, the application method of apparatus of the present invention is simple, and degasification can be completed using the soaking time of traditional degassing process process
And crystal grain refinement, effectively shorten production cycle, time-consuming short, energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is the left view of the device of a kind of compound degasification of cast aluminium alloy gold melt of the present invention and crystal grain refinement；
Fig. 2 is the right view of the device of a kind of compound degasification of cast aluminium alloy gold melt of the present invention and crystal grain refinement
Fig. 3 is the picture of the sample of embodiment 1 and comparative example 1, and (a) is the sample of comparative example 1 in figure, (b) is embodiment 1
Sample；
Fig. 4 is the metallographic structure figure of the sample of embodiment 1 and comparative example 1, and (a) is the sample of comparative example 2 in figure, (b) is
The sample of embodiment 1.
In figure: 1, ultrasonic transmitter；2, degassing rotor is rotated；3, ar gas passage；4, rotating electric machine；5, bell；6, second
High-temperature seal ring；7, vacuum table；8, elevated-temperature seal bearing；9, smelting furnace；10, steel crucibles；11, negative pressure pump；12, exhaust gas is cooling
System；13, furnace cover lifting system.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
But the present invention is not limited to these Examples.
Embodiment 1
The present embodiment provides a kind of devices of cast aluminium alloy gold melt compound degasification and crystal grain refinement, such as Fig. 1 and Fig. 2 institute
Show, including apparatus main body, apparatus main body is used to carry out the compound degasification and crystal grain refinement of aluminium alloy melt；
Apparatus main body includes the smelting furnace 9 and bell 5 worked in coordination, in order to guarantee the vacuum environment in smelting furnace 9, melting
It is close to furnace wall inside furnace 9 and is provided with steel crucibles 10, is provided with the first high temperature at steel crucibles 10 and the connecting portion of bell 5
Sealing ring, that is, steel crucibles 10 and bell 5 are tightly connected by high-temperature seal ring, and correspondence is set outside smelting furnace 9 and on bell 5
It is equipped with positioning and locking bolt for fixing, after closing the lid of bell 5 on smelting furnace 9, operates positioning and locking bolt for furnace
Lid 5 and smelting furnace 9 are fastenedly connected；
The furnace cover lifting system 13 for controlling the lifting of bell 5 is additionally provided on smelting furnace 9, furnace cover lifting system 13 is used for
It is raised above bell or falls bell downwards；Bell is gone up and down for ease of operation, sets electronic for furnace cover lifting system 13
The top of push rod, electric pushrod is connect by link block with bell 5, that is, the outer end of bell 5 is fixedly installed clamping ring, even
It is provided with link block on adapter ring, connect at the top of electric pushrod with link block, is provided on electric pushrod for controlling electric pushrod
The switch of elongation and contraction and extended length, is gone up and down by switch control electric pushrod in operation, to keep bell 5 upward
It extends far from smelting furnace 9, when closing is required, operation electric pushrod makes its contraction, makes bell 5 and smelting furnace by electric pushrod
Then 9 fittings operate positioning and locking bolt and are fastenedly connected bell 5 and smelting furnace 9；
It is connect at the top of shaft with rotating electric machine 4, shaft by elevated-temperature seal bearing 8 through shaft is connected in the middle part of bell 5
Bottom is connected with rotation degassing rotor 2, and shaft is hollow structure, and is internally provided with the argon gas being connected to rotation degassing rotor 2
Channel 3, the other end of ar gas passage 3 are connected with argon gas air supply unit, and for the ease of inflation, argon gas air supply unit is argon gas
Bottle, it is provided with pressure valve and pressure gauge on argon bottle, when needing to inflate, starting argon bottle can be carried out, that is, in shaft
It is provided through the ar gas passage 3 for ventilating into smelting furnace 9, the bottom of ar gas passage 3 is connected to rotation degassing rotor 2,
Top is connected to by pipeline with argon gas air supply unit, and rotation degasification and vacuum degassing are combined；
In order to guarantee the safe handling of ar gas passage 3, it is provided with driven wheel at the top of shaft, on the output shaft of rotating electric machine 4
It is provided with driving wheel, driving wheel is connected with driven wheel by belt, in use, starting rotating electric machine 4, drives driving wheel rotation,
Driving wheel rotation drives driven wheel rotation, so that shaft is driven to rotate, the final rotation for realizing rotation degassing rotor 2；
It is located at shaft surrounding on bell 5 and is also evenly arranged with ultrasonic transmitter 1, the purpose of ultrasonic transmitter 1 is ultrasonic place
Reason molten aluminum makes crystal grain refinement, and in order to guarantee vacuum environment, the position that ultrasonic transmitter 1 is connect with bell 5 is provided with the second high temperature
Sealing ring 6, ultrasonic transmitter 1 pass through bell 5 and extend into smelting furnace 9, and the length that ultrasonic transmitter 1 protrudes into smelting furnace 9 is
/ 10th of 9 height of smelting furnace, after covering bell 5 in this way, ultrasonic transmitter 1 be can extend into steel crucibles 10 in molten aluminum
10-20mm, to realize the effect of ultrasonic treatment refinement cast aluminium alloy gold crystal grain, bell 5 using molten aluminum as ultrasonic wave propagation medium
On also extend through the vacuum table 7 being provided with for detection device body interior pressure, vacuum table 7 is for measuring and indicating operating status
Pressure in lower smelting furnace 9；
Exhaust tube is provided on smelting furnace 9, exhaust tube extends outwardly through smelting furnace 9, and end is connected with exhaust gas cooling
The other end of system 12, exhaust gas cooling system 12 is connect with negative pressure pump 11, the model DG horizontal type multi-stage pump of negative pressure pump 11 or same
Etc. functions negative pressure pump, negative pressure pump 11 extracts the exhaust gas in smelting furnace 9 out after starting, and wherein exhaust gas cooling system 12 is for preventing
High-temperature gas burns out negative pressure pump, and exhaust gas cooling system 12 is made of cooling tube and cooling bath, one end of cooling tube and exhaust tube
Connection, the other end are connected to negative pressure pump 11, and cooling tube immersion is placed in the cooling bath of coolant liquid, in order to strengthen cooling effect,
Cooling tube structure in the shape of a spiral.
The present embodiment also provides the application method of above-mentioned apparatus, comprising the following steps:
Step 1: opening bell 5, aluminium alloy is placed in smelting furnace 9, using smelting furnace 9 by aluminum alloy melting, and is heated up
It is kept the temperature when temperature of aluminum liquid is 740 DEG C in steel crucibles 10；
Step 2: closing bell 5, locking positioning clamping screw is tightly connected bell 5 and melt furnace 9, starts negative pressure pump
11, starting rotation degassing rotor 2, revolving speed 1500r/min when negative pressure in smelting furnace 9 reaches -0.1MPa；Pass through argon gas simultaneously
Channel 3 is blown, air pressure 0.3MPa；Suspended bubble in melt is ruptured to using rotor rotation or is formed micro-bubble,
Again by argon gas by these bubble emersion melt liquid levels, the gas of discharge is extracted out by negative pressure system, it is cold by cooling system
But gas prevents negative pressure pump burning, is then discharged in dedusting environment friendly equipment and is discharged into atmosphere after depositing dust filtering, guarantees equipment
Smoke dust in operation, it is ensured that the safety of worker；It rotates degasification and keeps 10min, close rotation degassing rotor 2, continue to keep negative pressure
Keep 20min, it is ensured that furnace body is all discharged in the bubble of emersion, and negative pressure can make to rise from the suspended bubble in melt simultaneously
Liquid level discharge, to reach effective degasification；
Step 3: opening ultrasonic transmitter 1 after temperature of aluminum liquid in steel crucibles 10 is 730 DEG C, ultrasonic wave contact is stretched
Enter 10~20mm of liquid level, ultrasonic power 2000W, ultrasonic time 5min, be then shut off negative pressure pump 11, ultrasonic wave can be effective
Dispersion alloy nucleation mass point and crystal grain reach crystal grain refinement and the equally distributed effect of crystal grain；After discharge degree, by melt liter
Temperature opens bell and carries out casting components to 740 DEG C.
Embodiment 2
It is identical as the structure of embodiment 1, the difference is that the condition in use process, application method provided in this embodiment
Are as follows:
The present embodiment also provides the application method of above-mentioned apparatus, comprising the following steps:
Step 1: opening bell 5, aluminium alloy is placed in smelting furnace 9, using smelting furnace 9 by aluminum alloy melting, and is heated up
It is kept the temperature when temperature of aluminum liquid is 700 DEG C in steel crucibles 10；
Step 2: closing bell 5, locking positioning clamping screw is tightly connected bell 5 and melt furnace 9, starts negative pressure pump
11, starting rotation degassing rotor 2, revolving speed 800r/min when negative pressure in smelting furnace 9 reaches -0.06MPa；Pass through argon gas simultaneously
Channel 3 is blown, air pressure 0.6MPa；Suspended bubble in melt is ruptured to using rotor rotation or is formed micro-bubble,
Again by argon gas by these bubble emersion melt liquid levels, the gas of discharge is extracted out by negative pressure system, it is cold by cooling system
But gas prevents negative pressure pump burning, is then discharged in dedusting environment friendly equipment and is discharged into atmosphere after depositing dust filtering, guarantees equipment
Smoke dust in operation, it is ensured that the safety of worker；It rotates degasification and keeps 15min, close rotation degassing rotor 2, continue to keep negative pressure
Keep 15min, it is ensured that furnace body is all discharged in the bubble of emersion, and negative pressure can make to rise from the suspended bubble in melt simultaneously
Liquid level discharge, to reach effective degasification；
Step 3: opening ultrasonic transmitter 1 after temperature of aluminum liquid in steel crucibles 10 is 680 DEG C, ultrasonic wave contact is stretched
Enter 10~20mm of liquid level, ultrasonic power 2000W, ultrasonic time 10min, be then shut off negative pressure pump 11, ultrasonic wave can have
Dispersion alloy nucleation mass point and crystal grain are imitated, crystal grain refinement and the equally distributed effect of crystal grain are reached；After discharge degree, by melt
780 DEG C are warming up to, bell is opened and carries out casting components.
Embodiment 3
It is identical as the structure of embodiment 1, the difference is that the operation of device is optimized, that is, outside smelting furnace 9
PLC control system is provided on wall, PLC control system includes PLC electric-controlled plate, ultrasonic transmitter control switch, rotating electric machine
Control switch, furnace cover lifting system control switch, negative pressure pump control switch and the time relay, PLC electric-controlled plate are set to melting
9 outer wall of furnace is welded with ultrasonic transmitter control switch, rotating electric machine control switch, furnace cover lifting system control on PLC electric-controlled plate
System switch, negative pressure pump control switch and the time relay, ultrasonic transmitter control switch and ultrasonic transmitter 1 are electrically connected,
Rotating electric machine control switch and rotating electric machine 4 are electrically connected, furnace cover lifting system control switch and furnace cover lifting system 13 are electrical
Connection, negative pressure pump control switch and negative pressure pump 11 are electrically connected.
When it is implemented, controlling ultrasonic transmitter control switch, rotating electric machine control switch, furnace by PLC electric-controlled plate
The opening and closing of the switches such as lid jacking system control switch, negative pressure pump control switch, to realize ultrasonic transmitter 1, rotating electric machine
4, furnace cover lifting system 13 and negative pressure pump 11 start and stop.
Comparative example 1
Use the components of chemical reagent and rotation degasification mode combination progress degasification in conventional method.
Comparative example 2
Components after being refined using grain refiner.
The sample that the embodiment of the present invention 1 and embodiment 3 obtain all has preferable performance, we are obtained with embodiment 1
Components for, the sample of the device of embodiment 1 treated components and comparative example 1 has been subjected to performance comparison, Fig. 3 is
The picture of the sample of embodiment 1 and comparative example 1, table 1 is the performance comparison table of the sample of embodiment 1 and comparative example 1, wherein (a)
For the sample of comparative example 1, (b) be embodiment 1 sample, from figure 3, it can be seen that the sample of comparative example 1 is there are apparent bubble,
And the sample surfaces of embodiment 1 are smooth, without bubble；As it can be seen from table 1 the performance of 1 sample of embodiment is substantially better than comparison
The performance of 1 sample of example.
1 properties of sample contrast table of table
The sample of the device for using embodiment 1 treated components and comparative example 2 has been carried out performance comparison by us, is schemed
4 be the metallographic structure figure of the sample of embodiment 1 and comparative example 1, and table 1 is the performance comparison of the sample of embodiment 1 and comparative example 2
Table, wherein (a) is the sample of comparative example 2, it (b) is the sample of embodiment 1, from fig. 4, it can be seen that the crystalline substance of the sample of embodiment 1
Grain more refines；As it can be seen from table 1 the performance of 1 sample of embodiment is substantially better than the performance of 1 sample of comparative example.
2 properties of sample contrast table of table
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement, which is characterized in that including apparatus main body；
Described device main body includes the smelting furnace (9) and bell (5) worked in coordination, and is additionally provided with and is used on the smelting furnace (9)
Control the furnace cover lifting system (13) of the bell (5) lifting；
Run through in the middle part of the bell (5) by elevated-temperature seal bearing (8) and is connected with shaft, the shaft top and rotating electric machine
(4) it connects, the shaft bottom is connected with rotation degassing rotor (2), and the shaft is hollow structure, and is internally provided with and institute
The ar gas passage (3) of rotation degassing rotor (2) connection is stated, it is single that the other end of the ar gas passage (3) is connected with argon gas gas supply
Member is located at the shaft surrounding on the bell (5) and is also evenly arranged with ultrasonic transmitter (1), and the ultrasonic transmitter (1) is worn
It crosses the bell (5) and extends to the smelting furnace (9), also extended through on the bell (5) and be provided with vacuum table (7)；
It is also provided with and communicated with outwardly extending exhaust tube on the smelting furnace (9), the other end of the exhaust tube is connected with exhaust gas
The other end of cooling system (12), the exhaust gas cooling system (12) is connect with negative pressure pump (11).
2. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
It is close to furnace wall inside the smelting furnace (9) to be provided with steel crucibles (10), the company of the steel crucibles (10) and the bell (5)
It is provided with the first high-temperature seal ring at socket part position, is correspondingly arranged on and is used on smelting furnace (9) outside and the bell (5)
Fixed positioning and locking bolt.
3. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
The furnace cover lifting system (13) is electric pushrod, and the top of the electric pushrod is connect by link block with the bell (5).
4. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
It is provided with driven wheel at the top of the shaft, is provided with driving wheel, the driving wheel and institute on the output shaft of the rotating electric machine (4)
Driven wheel is stated to connect by belt.
5. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
The argon gas air supply unit is argon bottle, is provided with pressure valve and pressure gauge on the argon bottle.
6. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
The exhaust gas cooling system (12) is made of cooling tube and cooling bath, and one end of the cooling tube is connected to the exhaust tube, separately
One end is connected to the negative pressure pump (11), and the cooling tube immersion is placed in the cooling bath of coolant liquid.
7. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
Cooling tube structure in the shape of a spiral.
8. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
The length that the ultrasonic transmitter (1) protrudes into the smelting furnace (9) is 1/10th of the smelting furnace (9) height.
9. a kind of device of cast aluminium alloy gold melt compound degasification and crystal grain refinement as described in claim 1, which is characterized in that
The position that the ultrasonic transmitter (1) connect with the bell (5) is provided with the second high-temperature seal ring (6).
10. the device of a kind of compound degasification of cast aluminium alloy gold melt according to any one of claims 1 to 9 and crystal grain refinement makes
With method, which comprises the following steps:
Step 1: opening the bell (5), aluminium alloy is placed in the smelting furnace (9), using smelting furnace (9) by aluminium alloy
Fusing, and heat up and kept the temperature when the steel crucibles (10) interior temperature of aluminum liquid is 700~740 DEG C；
Step 2: closing the bell (5), locking the positioning and locking bolt keeps the bell (5) and the melt furnace (9) close
Envelope connection, starts the negative pressure pump (11), starts institute when negative pressure reaches -0.06MPa~-0.1MPa in the smelting furnace (9)
Rotation degassing rotor (2) is stated, the revolving speed is 800~1500r/min；It is blown simultaneously by the ar gas passage (3), institute
Stating air pressure is 0.3~0.6MPa；10~15min is kept, the rotation degassing rotor (2) is then shut off, continues that negative pressure is kept to protect
Hold 15~20min；
Step 3: opening the ultrasonic transmitter after the steel crucibles (10) interior temperature of aluminum liquid is 680~730 DEG C
(1), the ultrasonic wave contact protrudes into 10~20mm of liquid level, ultrasonic power 2000W, and ultrasonic time is 5~10min, then closes
The negative pressure pump (11) are closed, after discharge degree, the steel crucibles (10) interior molten aluminum is warming up to 740 DEG C~780 DEG C, is opened
Bell simultaneously carries out casting components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548967.6A CN110172600B (en) | 2019-06-24 | 2019-06-24 | Device for composite degassing and grain refinement of cast aluminum alloy melt and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548967.6A CN110172600B (en) | 2019-06-24 | 2019-06-24 | Device for composite degassing and grain refinement of cast aluminum alloy melt and use method |
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| CN110172600A true CN110172600A (en) | 2019-08-27 |
| CN110172600B CN110172600B (en) | 2023-08-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906750A (en) * | 2019-11-29 | 2020-03-24 | 湖州好灵通铝业有限公司 | Smelting furnace with waste gas purification function for aluminum ingot processing |
| CN112458301A (en) * | 2020-11-19 | 2021-03-09 | 中南大学 | Ultrasonic rotary-cut auxiliary casting equipment |
| CN112779434A (en) * | 2020-12-27 | 2021-05-11 | 上海交通大学安徽(淮北)陶铝新材料研究院 | Method for in-situ self-growing aluminum-based composite material with permanent magnet stirring |
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| CN113278809A (en) * | 2021-05-24 | 2021-08-20 | 武汉理工大学 | Method for treating aluminum alloy melt by gas-assisted ultrasonic treatment |
| CN117587239A (en) * | 2024-01-19 | 2024-02-23 | 北京航空航天大学 | Alloy melt purification method by co-blowing refining agent and refining gas |
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| CN110906750A (en) * | 2019-11-29 | 2020-03-24 | 湖州好灵通铝业有限公司 | Smelting furnace with waste gas purification function for aluminum ingot processing |
| CN112458301A (en) * | 2020-11-19 | 2021-03-09 | 中南大学 | Ultrasonic rotary-cut auxiliary casting equipment |
| CN112779434A (en) * | 2020-12-27 | 2021-05-11 | 上海交通大学安徽(淮北)陶铝新材料研究院 | Method for in-situ self-growing aluminum-based composite material with permanent magnet stirring |
| CN113198985A (en) * | 2021-03-19 | 2021-08-03 | 兴化市广福金属制品有限公司 | Integrated machining device and machining method for stainless steel billets |
| CN113278809A (en) * | 2021-05-24 | 2021-08-20 | 武汉理工大学 | Method for treating aluminum alloy melt by gas-assisted ultrasonic treatment |
| CN113278809B (en) * | 2021-05-24 | 2022-09-16 | 武汉理工大学 | Method for treating aluminum alloy melt by gas-assisted ultrasonic treatment |
| CN117587239A (en) * | 2024-01-19 | 2024-02-23 | 北京航空航天大学 | Alloy melt purification method by co-blowing refining agent and refining gas |
| CN117587239B (en) * | 2024-01-19 | 2024-04-19 | 北京航空航天大学 | Alloy melt purification method by co-blowing refining agent and refining gas |
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