CN106735024A - Prepare aluminum matrix composite semi-continuous casting device - Google Patents
Prepare aluminum matrix composite semi-continuous casting device Download PDFInfo
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- CN106735024A CN106735024A CN201611258546.2A CN201611258546A CN106735024A CN 106735024 A CN106735024 A CN 106735024A CN 201611258546 A CN201611258546 A CN 201611258546A CN 106735024 A CN106735024 A CN 106735024A
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- warming plate
- attemperator
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- agitating device
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/108—Feeding additives, powders, or the like
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
- C22C2026/002—Carbon nanotubes
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- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Continuous Casting (AREA)
Abstract
Aluminum matrix composite semi-continuous casting device is prepared present invention is disclosed one kind, including melting ＆ holding furnace, feeding device, air supply plant, rotating driving device, bindiny mechanism, agitating device, crystallizer, attemperator and chute, melting ＆ holding furnace is connected with chute, chute is connected with attemperator, attemperator is connected with crystallizer, agitating device is installed in attemperator, feeding device and air supply plant are connected by bindiny mechanism with agitating device, and rotating driving device is connected with agitating device and drives agitating device to rotate.The present invention is realized in D.C.casting casting process, puddler is set near the solidification front of aluminium alloy melt, and continuous and quantitative adds reinforcement powder near solidification front, puddler carries out high-speed stirred, as dummy ingot moves down acquisition aluminum matrix composite ingot casting, reinforcement can be greatly reduced to float in the melt, the defects such as oxide-film are reduced, while can be suitable for industrializing continuous production.
Description
Technical field
Aluminum matrix composite semi-continuous casting device is prepared the present invention relates to one kind, is belonged to aluminum matrix composite and is prepared skill
Art field.
Background technology
Aluminum matrix composite is main with pure aluminum or aluminum alloy as matrix, by add the materials such as particle, fiber or whisker with
The purpose for improving alloy substrate tissue, improving material property is reached, conventional reinforcement has SiC, Al2O3, Graphene and carbon nanometer
Pipe etc..Aluminum matrix composite main preparation methods have powder metallurgic method, pressure-free impregnation method, in-situ synthesis and stirring casting method
Deng.Powder metallurgic method is to mix reinforcement with metal powder uniform stirring, then carries out ball milling, drying, compacting and sintering etc., but
The method production cost is high, and the destruction of Reinforcement structure is easily caused in mechanical milling process, reduces the performance of composite.Without pressure
Method of impregnation is into prefabricated component, then by molten metal bath under capillary force action by the well mixed pressed by powder of different proportion
Prefabricated component is penetrated into, compared with other combination process, pressureless penetration has low, the prepared material of process is simple, the requirement to equipment
Material consistency is high, can with newly net forming the advantages of, but low production efficiency is unfavorable for batch production.In-situ compound technology is used as one
Kind new complex technique, mainly reaches a kind of chemistry or non-chemically anti-on the metallic substrate using appropriate process
Enhancing phase should be prepared, technology production cost is high, be unfavorable for producing large-size components.Stirring casting method is in melting/holding furnace
Reinforcement is added in interior fused solution metal, causes that reinforcement is scattered in melt by stirring, long agitation causes to melt
Mix more oxide-film in body, the reinforcement when stirring is stopped during metaideophone in melt easily floats, and for the ease of
Apply agitating device body of heater capacity often smaller, be not suitable for large-scale continuous production.
Aluminum alloy semi-continuous casting method production ingot blank efficiency high, low cost, if can realize, reinforcement is added online, it becomes possible to
The large-scale continuous production of aluminum matrix composite is realized, the production efficiency of aluminum matrix composite is greatly improved, is reduced production cost,
Paid close attention to by increasing scientific research personnel in recent years.Patent CN201510695932.7 is used in melting/holding furnace and casting
Make and tundish is set between platform, bar or paper tinsel containing CNTs are quantitatively added in tundish, apply electromagnetism and ultrasonic agitation is obtained
Must be containing the aluminum melt of CNTs reinforcements, through chute into casting out aluminum matrix composite in crystallizer；It is semicontinuous in the method
In casting process there is the possibility for floating in aluminum melt in reinforcement, and reinforcement adding proportion in the melt accurately controls difficulty
It is high.If therefore in the crystallizer online uniform addition reinforcement in aluminium alloy melt, then and then semi-continuous casting, with regard to energy
Access aluminum matrix composite ingot casting.
The content of the invention
The purpose of the present invention is exactly in order to realize in D.C.casting casting process, near the solidification front of aluminium alloy melt
Agitating device is set, is easy to continuous and quantitative to add reinforcement powder and protective gas near solidification front, so as to obtain aluminium base
Composite ingot casting, and a kind of semi-continuous casting device for preparing aluminum matrix composite is provided.
Technical solution of the invention is：One kind prepares aluminum matrix composite semi-continuous casting device, including melting
Holding furnace, agitating device, attemperator, crystallizer, feed device, air supply plant, rotating driving device, bindiny mechanism and stream
Groove, the melting ＆ holding furnace is provided with melt outlet, is provided with passage in the attemperator, and the melt outlet and chute enter
Mouth is connected, and the outlet of the chute is connected with the feeder connection of attemperator, the channel outlet and knot of the attemperator
The entrance of brilliant device is connected, and the attemperator is provided with through hole, and the through hole is connected with crystallizer entrance, the agitating device
In inserting the through hole；Agitating device is in hollow form, and the rotating driving device is connected with agitating device, drives the stirring dress
Put and rotate, the feed device and air supply plant are connected with the bindiny mechanism, the bindiny mechanism and stirring are filled
Put and be connected.
Further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The bindiny mechanism includes back
Adapter and the second shaft coupling, the lower end of the swivel coupling are connected with second shaft coupling upper end.
Further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The feed device includes the
One motor, first shaft coupling, sealing gasket, shaft pressuring plate, loading hopper, barrel, feeding spiro rod and turn expects pipe, the loading hopper is installed on
Barrel top, the feeding spiro rod is installed in barrel, and wherein one end of the feeding spiro rod is located in the barrel, described to send
Expect that the other end of screw rod is connected with the first motor, described wherein one end for turning expects pipe is connected with barrel, described turn of material
The other end of pipe is connected with the swivel coupling.
Further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The air supply plant include into
Tracheae, adjustable flow meter and snap joint, one end of the snap joint are connected with level pressure air supply source, the snap joint
The other end is connected with wherein one end of adjustable flow meter, the other end of the adjustable flow meter and wherein one end phase of air inlet pipe
Connection, the other end of the air inlet pipe is connected with the swivel coupling.
Further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The rotating driving device
Including the first belt pulley, the first coupling spindle, belt, the second belt pulley, the second coupling spindle and the second motor, first belt pulley
It is installed on the first coupling spindle, second belt pulley is installed on the second coupling spindle, second motor and the second coupling spindle
It is connected, first belt pulley and the second belt pulley are connected by belt, the first coupling spindle upper end and described second
Axle device lower end is connected, and the first coupling spindle lower end is connected with agitating device.
Further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The agitating device includes
Paddle and rotary shaft, the paddle are installed on rotary shaft lower section, and the rotary shaft is equipped with hollow form and upper and lower ends
Opening, the lower end of first coupling spindle is connected with rotary shaft upper end open.
Further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The attemperator includes
Upper warming plate insert, upper warming plate and lower warming plate, the lower warming plate are installed on crystallizer top, the attemperator it is logical
Road outlet be arranged on lower warming plate, the upper warming plate be located at lower warming plate top, the upper warming plate and lower warming plate it
Between the passage of the attemperator is formed with space, the upper warming plate is provided with the U-type groove for being passed through for agitating device,
The notch of the U-type groove of the upper warming plate towards chute outlet, the agitating device through upper warming plate U-type groove and insulation
The channel outlet of device, the upper warming plate insert is embedded in the U-type groove of warming plate and matches with the U-type groove of upper warming plate
Close, so as to reduce paddle top leakage liquid level, reduce oxide entrapment risk.
Yet further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The upper warming plate is with
Warming plate in being provided with one between warming plate, warming plate is provided with the U-type groove for being passed through for agitating device, the middle insulation in this
Outlet of the notch of the U-type groove on plate towards the chute.
Yet further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：A pressing plate is additionally provided with, should
Pressing plate is covered in the top of warming plate and upper warming plate insert, and one also is provided with the pressing plate for passing through for agitating device
U-type groove, the outlet of the notch of the U-type groove on the pressing plate towards chute.
Yet further, it is above-mentioned to prepare aluminum matrix composite semi-continuous casting device, wherein：The agitating device is stirred
Leaf is mixed to be located in the channel outlet of the attemperator.
The prominent substantive distinguishing features of the present invention and significant technological progress are mainly reflected in：
（1）Crystallizer internal cavity is provided with hollow stirrer device, and agitating device bottom is the channel outlet for adding reinforcement, is realized
Reinforcement is added near aluminium alloy melt solidification front, while the high-speed revolution shearing of paddle quickly can disperse reinforcement
Uniformly.Addition reinforcement can greatly reduce reinforcement and float in the melt near solidification front.
（2）Attemperator unique structure design in crystallization device assembly, attemperator above crystallizer body with
Crystallizer body constitutes a semiclosed inner chamber, and the perforate of attemperator edge is docked with outside launder outlet, and melt liquid stream passes through
The hole enters in crystallizer, and attemperator top drilling is used to install agitating device, rotation of the perforate size slightly larger than agitating device
Shaft diameter, melt liquid level is higher than above-mentioned attemperator edge perforate in chute during semi-continuous casting, and paddle top is molten
Body is very small with extraneous contact area, and can mitigate significantly be involved in the defects such as oxide-film in whipping process.
（3）Design connects feed device, air supply plant and agitating device using the fixed swivel coupling of the inner tube that two-way circulates,
Realize and reinforcement material and current-carrying protective gas are sent in the passage in hollow rotating shaft together, while agitating device can be high
Speed rotation, designs extremely ingenious.
Brief description of the drawings
Technical solution of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is to prepare aluminum matrix composite semi-continuous casting device schematic diagram；
Fig. 2 is to prepare the specific schematic diagram of aluminum matrix composite semi-continuous casting device；
Fig. 3 is attemperator schematic diagram.
In figure, the implication of each reference is：In figure, the implication of each reference is：1-the first motor, the 2-the first connection
Axle device, 3-sealing gasket, 4-shaft pressuring plate, 5-loading hopper, 6-barrel, 7-feeding spiro rod, 8-clutch shaft bearing, 9-turn expects pipe,
10-air inlet pipe, 11-adjustable flow meter, 12-snap joint, 13-swivel coupling, 14-second shaft coupling, the 15-the second axle
Hold, the 16-the first belt pulley, the 17-the first coupling spindle, 18-belt, the 19-the second belt pulley, the 20-the second coupling spindle, 21-
Second motor, 22-rotary shaft, 23-paddle, 24-pressing plate, 25-upper warming plate insert, 26-upper warming plate, 27-in
Warming plate, 28-lower warming plate, 29-crystallizer body, 30-crystallizer lower plate, 31-crystallizer liner, 32-chute,
33-aluminum melt, 34-fluid level line, 35-gas powder mixture, 36-liquidus curve, 37-solid-liquid two-phase region, 38-solid phase
Line, 39-composite ingot, 40-dummy bar head, 41-melting ＆ holding furnace.
Specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention is described in further detail, so that technical solution of the present invention is more
Should be readily appreciated that and grasp.
As shown in Figure 1, the present invention prepares aluminum matrix composite semi-continuous casting device, including melting ＆ holding furnace 41,
Agitating device, attemperator, crystallizer, feed device, air supply plant, rotating driving device, bindiny mechanism and chute 32, melt
The bottom for refining the wherein side side wall of holding furnace 41 is provided with melt outlet, and melt flow is controlled for convenience, is set at melt outlet
There is flow control valve.Passage is provided with attemperator, the feeder connection is located at attemperator front side, channel outlet is located under attemperator
Side, crystallizer is installed on attemperator lower section, and melt outlet is connected with the entrance of chute 32, the outlet of the chute 32 and guarantor
The feeder connection of warm device is connected, and the channel outlet of attemperator is connected with the entrance of crystallizer.Also set on attemperator
There is a through hole, the through hole is connected with crystallizer entrance, the agitating device is inserted in the through hole.Agitating device is in hollow form,
Its upper and lower ends is equipped with opening, and the rotating driving device is connected with agitating device, the feed device and air supply plant
It is connected with bindiny mechanism, bindiny mechanism is connected with agitating device.
As depicted in figs. 1 and 2, feed device include the first motor 1, first shaft coupling 2, sealing gasket 3, shaft pressuring plate 24, plus
Hopper 5, barrel 6, feeding spiro rod 7, clutch shaft bearing 8 and turn expects pipe 9, loading hopper 5 is installed on the top of barrel 6, feeding spiro rod 7 is installed
In in barrel 6, the inner of feeding spiro rod 7 is located in barrel 6 and near the bottom position of barrel 6, and the outer end of feeding spiro rod 7 and the
One bearing 8 is connected, and the outer end of feeding spiro rod 7 is connected by first shaft coupling 2 with the first motor 1.Turn expects pipe 9 and be installed on barrel 6
Bottom, turns the one end of expects pipe 9 and is connected with barrel 6, turns the other end of expects pipe 9 and is connected with the swivel coupling 13 of bindiny mechanism described later
It is logical.In order to ensure normal feeding, sealing gasket 3 is provided between the outer end of feeding spiro rod 7 and the end of barrel 6, the periphery of sealing gasket 3 is provided with axle
Pressing plate 24.First motor 1 is rotated so as to drive feeding spiro rod 7 to be rotated in barrel 6, and reinforcement is constantly added by loading hopper 5
, be fed forward to for intensive aspect powder using the rotation of feeding spiro rod 7 in turning expects pipe 9 by powder, and velocity of rotation is according to technological requirement
Required feeding amount how many stepless time adjustment.First motor 1 is preferably variable-frequency motor.
As depicted in figs. 1 and 2, air supply plant includes air inlet pipe 10, adjustable flow meter 11 and snap joint 12, snap joint
12 one end is connected to level pressure air supply source, and the other end of snap joint 12 is connected with one end of adjustable flow meter 11, adjustable stream
The other end of gauge 11 is connected with one end of air inlet pipe 10, the swivel coupling of the other end of air inlet pipe 10 and aftermentioned bindiny mechanism
13 are connected, and swivel coupling 13 is connected with agitating device.Can be passed through according to technological requirement institute air demand in actual mechanical process
The adjusting gas flow size of adjustable flow meter 11.
As depicted in figs. 1 and 2, rotating driving device include second bearing 15, the first belt pulley 16, the first coupling spindle 17,
Belt 18, the second belt pulley 19, the second coupling spindle 20 and the second motor 21, the first belt pulley 16 are installed on the first coupling spindle 17
On, the first coupling spindle is provided with second bearing 15 in both sides about 17, and the second belt pulley 19 is installed on the second coupling spindle 20, and second
Coupling spindle is provided with second bearing 15 in both sides about 20, and the head of the second motor 21 is connected with the second coupling spindle 20, the first skin
The belt pulley 19 of belt wheel 16 and second is connected by belt 18.First coupling spindle 17 and the second shaft coupling 14 of aftermentioned bindiny mechanism
Lower end is connected.
As shown in figure 1, agitating device includes rotary shaft 22 and paddle 23, rotary shaft 22 and paddle 23 are high purity graphite
Material；Paddle 23 is connected through a screw thread and is installed on the lower section of rotary shaft 22, and rotary shaft 22 is equipped with hollow form and upper and lower ends
Opening.The upper end of rotary shaft 22 is threadedly attached to the lower end of the first coupling spindle 17 of rotating mechanism so that the He of the first coupling spindle 17
The upper end open of rotary shaft 22 is connected.
As depicted in figs. 1 and 2, bindiny mechanism includes swivel coupling 13 and second shaft coupling 14, the lower end of swivel coupling 13
Flange face is connected to the upper end of second shaft coupling 14, and swivel coupling 13 is fixed for the inner tube that two-way circulates, and top is two-way circulated port
The air inlet pipe 10 for turning expects pipe 9 and air supply plant of feed device is connected respectively, and the lower end of second shaft coupling 14 is in rotating driving device
The upper end of the first coupling spindle 17 be connected, the lower end of the first coupling spindle 17 connection agitating device the upper end of rotary shaft 22 opening be connected
Connect, all of above part is in hollow form, the interior hollow section of each part adds passage as gas powder, realize charging with
Stirring integratedization.Feed device, air supply plant, rotating driving device and agitating device pass through outside support（Do not marked in figure）Connection
It is connected into an entirety.Second motor 21 is preferably servomotor, can the rotating speed stepless time adjustment according to needed for technological requirement.Second motor
21 are rotated, so as to drive the second coupling spindle 20 to rotate so that the second belt pulley 19 is rotated, the second belt pulley 19 is rotated and passes through belt
18 the first belt pulleys 16 of drive are rotated so that the first connector 17 is rotated, and is rotated so as to axle 23 is rotated.
As shown in figures 1 and 3, attemperator includes pressing plate 24, upper warming plate insert 25, upper warming plate 26, middle warming plate
27 and it is lower insulation 28, lower warming plate 28 is provided with opening, and the opening is the channel outlet of attemperator, the agitating device
Paddle 23 is contained in the opening of the lower warming plate 28, and alloy melt is also flowed into crystallizer through the opening, upper warming plate 26
Positioned at the top of lower warming plate 28, the attemperator passage is formed with space between upper warming plate 27 and lower warming plate 28, on
Warming plate 26 be provided with one for supply the U-type groove that passes through of agitating device, the outlet of the notch of the U-type groove towards chute 32.Middle guarantor
Warm plate 27 is sandwiched between warming plate 26 and lower warming plate 28, and one also is provided with middle warming plate 27 for passing through for agitating device
U-type groove, the outlet of the notch of the U-type groove towards chute 32.Upper warming plate insert 25 is embedded in the U-type groove of warming plate 26
Interior, a wherein free end of upper warming plate insert 25 is provided with the breach being engaged with agitating device rotary shaft 22, the breach and upper
The U-type groove of warming plate 26 is engaged, so as to clamp rotary shaft 22 so that agitating device is fixed.Pressing plate 24 is covered in warming plate
26 and the top of upper warming plate insert 25, and also be provided with pressing plate 24 one for supply the U-type groove that passes through of agitating device, the U-type groove
Notch towards chute 32 outlet.Upper warming plate insert 25 and the split of upper warming plate 26 design are so as to facilitate agitating device
Install, agitating device installation process is as follows：The crystallizer for being located at part below attemperator fixed first, then by lower warming plate
28 are positioned on crystallizer body 29, then by the opening of the agitating device lower warming plate 28 of insertion so that agitating device is stirred
Mix leaf 23 to be limited in the opening of the lower warming plate 28, then middle warming plate 27 is placed on lower warming plate 28, afterwards by upper guarantor
Warm plate 26 and upper warming plate insert 25 are sequentially placed on middle warming plate 27 so that agitating device is fixed, and finally covers pressing plate 24
In on upper warming plate 26 and upper warming plate insert 25 so that attemperator constitutes a semiclosed inner chamber with crystallizer body.
As shown in figure 1, crystallizer includes crystallizer body 29, crystallizer lower plate 30, crystallizer liner 11 and dummy bar head 40,
Crystallizer lower plate 30 is installed on the outer peripheral lower section of crystallizer body 29, and crystallizer liner is embedded in the inner ring of crystallizer body 9, draws
The head of ingot 40 is installed on the bottom of the inner chamber of crystallizer body 29.
Present invention application is further explained as a example by preparing carbon nanotube enhanced aluminium-based composite material with reference to Fig. 1 and Fig. 2
State：
（1）Be connected to for the snap joint 12 of air supply plant in loading hopper 5 by CNTs powder after the appropriate copper plating treatment of addition
Outside nitrogen supply (NS) device；
（2）Aluminium alloy melting refinement and is incubated in melting ＆ holding furnace 41, melting insulation melt temperature control is in 730-760
DEG C, obtain aluminum melt 33；
（3）Crystallizer is installed on casting platform so that crystallizer attemperator is connected seamless with chute 32, by crystallizer
The feed device of side, air supply plant, rotating driving device and agitating device are integrally placed into correct position in crystallizer.Frock is accurate
It is standby it is ready after release aluminum melt, and control the flow of aluminum melt 33 so that in chute 32；The liquid level line level 34 of aluminum melt 33 is higher than
Hot top enters head piece；
（4）The first motor 1 of feed device and the second motor 21 of rotating driving device are opened, and sets the gas of air supply plant
Flow.
（5）CNTs powder and quantitative nitrogen quantitative after releasing is transported in the cavity of rotary shaft 22, is formed gas powder and is mixed
Fit 35, while the high speed of rotary shaft 22 rotarily drives the high-speed stirred of paddle 23, the lower end of 35 rotated axle of gas powder mixture 22 is opened
Mouth enters in aluminum melt 33, and the high speed shear of agitated leaf 23 is rapidly dispersed into the aluminum melt 33 in incubation cavity；Tie before this
Cooling water is constantly ejected into the surrounding of dummy bar head 39 by crystallizer delivery port in brilliant device, and for φ 178mm billets, casting speed is 65
~ 130mm/min, 3 ~ 6m3/h of cooling water inflow；CNTs dispersion melts are crystallized in crystallizer and form liquid cave, and melt is divided into liquid phase
Area, solid-liquid two-phase region 36, solid-liquid two-phase region 36 is solidification front line 37 with the line of demarcation of solid ingot 38；With dummy bar head 39 not
Disconnected to move down, CNTs dispersion melts are continually crystallized device liner 31 in incubation cavity and cool down, and form scull and remove crystallizer sheet
Body 29, the cooling water for being crystallized device ejection is cooled down strongly, forms composite ingot casting 38.
Further, the preparation method of above-mentioned carbon nanotube enhanced aluminium-based composite material, step（4）In CNTs addition
It is the 0.5 ~ 2.0% of modified alloy matrix aluminum weight to be reinforced to measure, and nitrogen flow is 1 ~ 4L/min；Step（5）Middle gas powder mixing
For near solidification front line, melt temperature is liquidus temperature ± 10 DEG C or so at body addition；Step（5）In paddle 23
0 ~ 100mm more than the solidification front of alloy melt, rotating speed is 500 ~ 2000 revs/min, and the stirring shearing of high speed can be extremely short
The wetability of subparticle and melt is significantly improved in time.
Explanation is needed exist for, above-described embodiment is only by taking carbon nanotube enhanced aluminium-based composite material as an example, therefore addition
CNTs powder, when actually used of the invention, can be added as needed on corresponding reinforcement powder, such as SiC, Al2O3, Graphene etc..
By above description as can be seen that the present invention prepares the semi-continuous casting device of aluminum matrix composite, realize
Add reinforcement gas powder mixture near aluminum melt solidification front in crystallizer, nearby aluminum melt temperature is low, very for solidification front
To semi-solid state, viscosity is big to increase reinforcement powder floating resistance, and melt crystallization and freezing, reinforcement powder soon
The residence time is short in aluminum melt, and reinforcement powder recovery rate is high；Quantitative powder and gas are realized inside agitating device
Premixing, is conducive to being uniformly dispersed for reinforcement powder itself in passage, while the outlet of reinforcement powder is in agitating device bottom,
Close to the paddle of high speed rotation, the high speed shear of paddle can quickly disperse reinforcement powder in the melt；The present invention
By controlling during semi-continuous casting, melt liquid level, highly higher than attemperator entrance, is stirred device in casting process in chute
Leaf top melt is very small with external world's contact area, and can mitigate significantly be involved in the defects such as oxide-film in whipping process.
Certainly, it is more than representative instance of the invention, in addition, the present invention can also have other various specific implementations
The technical scheme that mode, all use equivalents or equivalent deformation are formed, all falls within the scope of protection of present invention.
Claims (10)
1. one kind prepares aluminum matrix composite semi-continuous casting device, it is characterised in that：Including melting ＆ holding furnace, stirring dress
Put, attemperator, crystallizer, feed device, air supply plant, rotating driving device, bindiny mechanism and chute, the melting protects
Warm stove is provided with melt outlet, and passage is provided with the attemperator, and the melt outlet is connected with the entrance of chute, described
The outlet of chute is connected with the feeder connection of attemperator, and the channel outlet of the attemperator is connected with the entrance of crystallizer
Logical, the attemperator is provided with through hole, and the through hole is connected with crystallizer entrance, and the agitating device is inserted in the through hole；
Agitating device is in hollow form, and the rotating driving device is connected with agitating device, drives the agitating device to rotate, institute
State feed device and air supply plant to be connected with the bindiny mechanism, the bindiny mechanism is connected with agitating device.
It is 2. according to claim 1 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：The connection
Mechanism includes swivel coupling and the second shaft coupling, and the lower end of the swivel coupling is connected with second shaft coupling upper end.
It is 3. according to claim 2 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：The feeding
Device includes the first motor, first shaft coupling, sealing gasket, shaft pressuring plate, loading hopper, barrel, feeding spiro rod and turns expects pipe, described to add
Hopper is installed on barrel top, and the feeding spiro rod is installed in barrel, and wherein one end of the feeding spiro rod is located at the material
In cylinder, the other end of the feeding spiro rod is connected with the first motor, and described wherein one end for turning expects pipe is connected with barrel,
The other end for turning expects pipe is connected with the swivel coupling.
It is 4. according to claim 2 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：It is described to supply gas
Device includes air inlet pipe, adjustable flow meter and snap joint, and one end of the snap joint is connected with level pressure air supply source, described
The other end of snap joint is connected with wherein one end of adjustable flow meter, the other end of the adjustable flow meter and air inlet pipe
Wherein one end is connected, and the other end of the air inlet pipe is connected with the swivel coupling.
It is 5. according to claim 2 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：The rotation
Drive device includes the first belt pulley, the first coupling spindle, belt, the second belt pulley, the second coupling spindle and the second motor, described the
One belt pulley is installed on the first coupling spindle, and second belt pulley is installed on the second coupling spindle, second motor and
Two coupling spindles are connected, and first belt pulley and the second belt pulley are by belt connection, the first coupling spindle upper end and institute
Second shaft coupling lower end is stated to be connected, and the first coupling spindle lower end is connected with agitating device.
It is 6. according to claim 5 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：The stirring
Device includes paddle and rotary shaft, and the paddle is installed on rotary shaft lower section, and the rotary shaft is in hollow form and upper and lower two
End is equipped with opening, and the lower end of first coupling spindle is connected with rotary shaft upper end open.
It is 7. according to claim 1 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：The insulation
Device includes upper warming plate insert, upper warming plate and lower warming plate, and the lower warming plate is installed on crystallizer top, the insulation
The channel outlet of device is arranged on lower warming plate, and the upper warming plate is located at lower warming plate top, and the upper warming plate is with
The passage of the attemperator is formed between warming plate with space, the upper warming plate is provided with for being passed through for agitating device
U-type groove, the notch of the U-type groove of the upper warming plate is towards the outlet of chute, and the agitating device is U-shaped through upper warming plate
The channel outlet of groove and attemperator, the upper warming plate insert is embedded in the U-type groove of warming plate.
It is 8. according to claim 7 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：The upper guarantor
Warming plate in being provided with one between warm plate and lower warming plate, warming plate is provided with the U-type groove for being passed through for agitating device, institute in this
State the notch of U-type groove on warming plate towards the outlet of the chute.
It is 9. according to claim 7 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：It is additionally provided with pressure
Plate, the pressing plate is covered in the top of warming plate and upper warming plate insert, and also is provided with the pressing plate for being filled for stirring
Put through U-type groove, the outlet of the notch of the U-type groove on the pressing plate towards chute.
It is 10. according to claim 7 to prepare aluminum matrix composite semi-continuous casting device, it is characterised in that：It is described to stir
The paddle for mixing device is located in the channel outlet of the attemperator.
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| CN201611258546.2A CN106735024A (en) | 2016-12-30 | 2016-12-30 | Prepare aluminum matrix composite semi-continuous casting device |
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| CN107297476A (en) * | 2017-08-22 | 2017-10-27 | 北京有色金属研究总院 | The apparatus and method of mechanical agitation continuous casting homogeneous fine crystal ingots |
| CN110396651A (en) * | 2019-09-12 | 2019-11-01 | 王书杰 | Preparation system, composite material and the components of carbon fiber reinforced aluminum matrix composite |
| CN112719249A (en) * | 2020-12-28 | 2021-04-30 | 湖南文昌新材科技股份有限公司 | Device and method for preparing gradient composite material casting |
| CN112795806A (en) * | 2020-12-28 | 2021-05-14 | 湖南文昌新材科技股份有限公司 | Preparation device and preparation method of composite material |
| CN112877558A (en) * | 2020-12-28 | 2021-06-01 | 湖南文昌新材科技股份有限公司 | Device and method for preparing composite material by pressurizing and uniformly dispersing ceramic particles |
| CN113802021A (en) * | 2021-09-07 | 2021-12-17 | 湖南烁科热工智能装备有限公司 | Equipment for continuously preparing high-silicon aluminum alloy in grading pressure infiltration manner |
| CN117862431A (en) * | 2024-03-13 | 2024-04-12 | 北京航空航天大学 | Online vacuum mechanical stirring pressure-regulating extrusion die casting equipment |
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| CN117862431B (en) * | 2024-03-13 | 2024-05-28 | 北京航空航天大学 | Online vacuum mechanical stirring pressure-regulating extrusion die casting equipment |
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