CN107234220A - A kind of pair of awkward silence at a meeting continuously prepares the technique that high-quality aluminum alloy justifies ingot casting - Google Patents
A kind of pair of awkward silence at a meeting continuously prepares the technique that high-quality aluminum alloy justifies ingot casting Download PDFInfo
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- CN107234220A CN107234220A CN201710494941.9A CN201710494941A CN107234220A CN 107234220 A CN107234220 A CN 107234220A CN 201710494941 A CN201710494941 A CN 201710494941A CN 107234220 A CN107234220 A CN 107234220A
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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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/112—Treating the molten metal by accelerated cooling
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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
- B22D11/14—Plants for continuous casting
Abstract
The technique that high-quality aluminum alloy justifies ingot casting is continuously prepared the present invention relates to a kind of pair of awkward silence at a meeting, belongs to aluminium alloy manufacture field.A kind of pair of awkward silence at a meeting continuously prepares the technique that high-quality aluminum alloy justifies ingot casting, and the technique is heat top casting technique, is specially：In circle ingot casting casting process, some and aluminium alloy melt composition identical aluminium alloy cold burden is uniformly inserted to aluminium alloy melt center portion；The aluminium alloy cold burden is persistently inserted in melt in casting process, make center portion melt temperature be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within, wherein, the aluminium alloy cold burden be tube and pipe of aluminium alloy；The melt center portion is in the radius circumferential area of circular cross-section 3/4.Compared with prior art, the method for the invention fundamentally solves that melt center portion cooling velocity in big size ingot-casting casting process is slower, and the problem of radial symmetry gradient is larger can produce the high-quality aluminium alloy round cast ingot of big specification.
Description
Technical field
The technique that high-quality aluminum alloy justifies ingot casting is continuously prepared the present invention relates to a kind of pair of awkward silence at a meeting, belongs to aluminium alloy processing neck
Domain.
Background technology
Aluminium alloy is as the light-weighted preferred material of the industrial products such as aircraft and spacecraft, automobile, bullet train, in aviation
The sector applications such as space flight, communications and transportation, military project are quite varied.Wherein, large transport airplane, the large-scale extruding applied on rail truck
Section bar, large-diameter pipe material of oil product movement requirement etc. to the requirement more and more higher of maximization and the integration of aluminum alloy materials, and this
The preparation of a little materials is built upon on the basis of the aluminium alloy cast ingot of big specification high-quality, and semi-continuous casting is using most common
Produce the mode of ingot casting.In nineteen fifty-three, the semi-continuous casting technology of aluminium alloy is developed in success to Alcoa Chinalcos of the U.S. first.
Semicontinuous casting technique can realize the automation of technological process, improve production efficiency, save production cost, it is ensured that product
Quality and aluminium alloy recovery rate is high, be particularly important in aluminium alloy industrial production and widely used solidification means.Traditional
Direct water-cooling semi-continuous casting due to inside and outside melt intensity of cooling it is different, the temperature difference of ingot casting center portion and edge is larger, causes horizontal stroke
Center portion grain structure is more thick on section, alloying element gross segregation, ingot casting surface segregation knurl, the defect such as crackle.
Based on above mentioned problem, Chinese patent CN104561704A discloses a kind of aluminium alloy round cast ingot of large scale 7055 production
Technique, employs heat top casting method and combines staged casting technique.Hot direct casting is made is equipped with fire resisting on crystallizer top
Material sleeve is made in a storage tank, casting process, and the heat that the melt in storage tank enters before crystallizer is lost smaller, and melt temperature is steady
It is scheduled on the cast temperature of setting.The application of heat top foundry engieering, makes effective crystal region highly diminish, and reduces and once cools down by force
Degree, crystallizer secondary cooling effect increase, improves the surface quality of ingot casting, inside ingot quality is improved to a certain extent,
Reduce the defects such as slag inclusion, stomata.Low discharge is used when staged casting technique is low velocity in casting process, during high speed
Using high water-carrying capacity, this is effectively improved the surface quality of ingot casting, but center portion crystal grain is still larger, does not solve fundamentally
Ingot casting center portion is big with the edge temperature difference, the problem of center portion cooling is slower.Chinese patent CN205236991U has invented one kind and prepared greatly
The device of specification high-quality aluminium alloy cast ingot, the device mutually ties subregion to gas crystallizer with uniform stirrer and magnetic stirrer
Close, uniform cooler is deep into crystallizer, to melt cooling inside melt, this effectively improves melt internal cooling speed
The problem of rate is slower, but be due to that cooler outside wall temperature is too low, melt is easily grown up in cooler surface forming core, is especially melted
Body fluid face and air and cooler contact site, this increases production difficulty, production efficiency reduction.
The content of the invention
The problem of existing for prior art, the present invention proposes that one kind can improve melt center portion and edge in casting process
The temperature difference is larger, improves the device and technique that prepare the high-quality aluminium alloy round cast ingot of big specification of production efficiency, its main thought
On the basis of being made in hot direct casting, into crystallizer, melt center portion to 3/4 radius circumferential area inserts at least one composition with melting
Body identical aluminium alloy cold burden, in the presence of heat transfer, cold burden melts rapidly, and this provides a cooling field for center portion melt,
Efficiently solve the problem of big size ingot-casting casting process central part cooling is slower.
A kind of pair of awkward silence at a meeting continuously prepares the technique that high-quality aluminum alloy justifies ingot casting, it is characterised in that：The technique is pushed up for heat
Casting technique, be specially：In circle ingot casting casting process, to aluminium alloy melt center portion insert at least one with aluminium alloy melt into
Divide identical aluminium alloy cold burden；The aluminium alloy cold burden is persistently inserted in melt in casting process, protects center portion melt temperature
Hold within aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature.
Wherein, the aluminium alloy cold burden is tube and pipe of aluminium alloy, and its insertion position is：The aluminum alloy round tube section center of circle and melt
The section center of circle is overlapped；The melt center portion is in the radius circumferential area of circular cross-section 3/4.
In casting ingot process of the present invention, tube and pipe of aluminium alloy is inserted in melt, is located on the outside of the tube wall of tube and pipe of aluminium alloy
In the radius circumferential area of melt circular cross-section 3/4.
In casting ingot process of the present invention, the aluminium alloy cold burden is persistently inserted in melt in casting process, makes center portion
Melt temperature is maintained at aluminum alloy melt liquidus temperature between (+10 DEG C of aluminum alloy melt liquidus temperature).
Tube and pipe of aluminium alloy of the present invention is located in melt center portion region, and it can be one, or multiple, and such as 2,3,4
It is individual.
The temperature of melt center portion of the present invention can be measured using temperature testing device disclosed in prior art, in addition, should
Temperature test can be connected with control device, for controlling aluminium alloy cold burden to insert the speed of melt, to keep the temperature of melt center portion
Degree is all the time within aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature.Further, preferably test melt is circular
The temperature of section circle centre position, keeps the temperature of temperature of section circle centre position all the time in aluminum alloy melt liquidus temperature or higher than liquidus curve
Within 10 DEG C of temperature.
Further, it is preferable to insert at least one and aluminium alloy melt composition identical aluminum alloy round into aluminium alloy melt
Pipe, the tube wall for enabling aluminum alloy to pipe is located in 1/6~3/4 radius circle ring area；Further, preferably into aluminium alloy melt
At least one and aluminium alloy melt composition identical tube and pipe of aluminium alloy are inserted, the tube wall for enabling aluminum alloy to pipe is located at 1/3~3/4
In radius circle ring area
Further, the section internal diameter of described tube and pipe of aluminium alloy is 10~600mm, 10~50mm of wall thickness.
The quantity and size of described aluminium alloy cold burden change with the size of casting alloy.When casting alloy specification is larger
When, being relatively large in diameter for cold burden is inserted, quantity is more；When casting alloy specification is relatively small, the diameter for inserting cold burden is smaller, number
Amount is less.
Further, the aluminium alloy cold burden is persistently inserted in melt in casting process, makes the temperature of melt circle centre position
Be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within.
The preferably described heat top casting technique of casting technique of the present invention is carried out in hot-top casting device, wherein, it is described
Hot-top casting device mainly includes hot top, graphite annulus, cooling water tank, crystallizer and dummy bar head；The cooling water tank is surrounded on knot
Outside brilliant device, described heat top is located at the first half inside crystallizer, and heat top lower section is graphite annulus, and described dummy bar head is located at crystallization
Graphite annulus lower edge inside device, dummy bar head bottom connection casting machine.
Preferably, described graphite annulus is prepared using porous graphite.
Further, ring-type apopore arranged at described cooling water tank bottom, the water (flow) direction of the apopore discharge with again
Angle angle between force direction is 20~40 degree, makes to drain on round ingot casting from the water that apopore is discharged.
The apopore can be a row or multi-row, be adjusted according to ingot casting size.
Further, aluminium alloy melt is led into dummy bar head top through heat top, when melt solidifies green shell, casting machine is led
Draw dummy bar head to move downward；Some aluminium alloy cold burdens are persistently inserted directly over heat top, the speed that moves down of aluminium alloy cold burden ensures
Melt center portion temperature is within aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature.
Further, described aluminium alloy cold burden, before casting process starts, is located at heat in annular and is pushing up nearly center portion just
Top；After casting process starts, conveyed into melt.
The present invention provides a kind of continuous new technology for preparing large-size aluminum alloy circle ingot casting on the basis of said apparatus,
Alloy melt is through heat top to dummy bar head top, and during melt liquid level to setting height, casting machine travel dummy ingot is moved downward.From Re Ding
Position directly above persistently inserts at least one and casting alloy composition identical aluminium alloy cold burden in center portion to 3/4 radius region,
In the presence of heat transfer, cold burden melts rapidly, and this provides a cooling field for center portion melt.It is double in graphite annulus and aluminium alloy cold burden
Under the collective effect for cooling down field, melt is realized and once cooled down.Formed after solidified shell, under the traction of casting machine, continued past
Lower motion, in the presence of secondary cooling, completes process of setting.
It is of the present invention it is continuous prepare aluminium alloy round cast ingot one preferred technical scheme of technique be：
(1) aluminium alloy cold burden is fixed on directly over crystallizer；Casting machine is lifted dummy bar head and risen up into crystallizer, dummy bar head
Upper edge is higher than under graphite annulus along 1~3mm, and dummy bar head is located at behind setting position, opens cooling water switch, and cooling water passes through crystallizer
The apopore of bottom sprays；
(2) melt that will stabilise at casting temperature is poured into heat top, and melt is reached on dummy bar head through heat top and crystallizer
Portion, when melt solidifies green shell, casting machine travel dummy bar head is moved downward, and continuously casting process starts；When casting process is steady
After fixed, the aluminium alloy cold burden above melt is downwardly into, and controls center portion melt temperature to be maintained at aluminium by thermocouple temperature measurement
Aluminium alloy liquidus temperature or higher than 10 DEG C of liquidus temperature within；
(3) when melt liquid level drops to heat top lower section, stop insertion cold burden, tube and pipe of aluminium alloy is raised on crystallizer
Side；After casting terminates, cooling water is closed, the high-quality aluminium alloy cast ingot of big specification is obtained.
Beneficial effects of the present invention are：Compared with prior art, presently embodied advantage is：
(1) aluminium alloy cold burden is inserted from melt center portion region, a cooling field is provided for melt center portion, in graphite annulus and aluminium
In the presence of the double cooling fields of alloy cold burden, the thermograde of reduction center portion and edge promotes center portion and edge as much as possible simultaneously
Solidification, it is to avoid the local remelting before secondary cooling；Cold burden is identical with bath composition simultaneously, not contaminated melt.This method from
Fundamentally solve melt center portion cooling velocity in big size ingot-casting casting process slower, the problem of radial symmetry gradient is larger,
The high-quality aluminium alloy round cast ingot of big specification can be produced.
(2) tiny using ingot casting crystal grain produced by the invention, composition is uniform, and alloy cast ingot internal soundness is significantly carried
Height, improves the processability of alloy, and blank well is provided for the deep processing of next step.
(3) device simple possible of the invention, cost-effective, industrial applications are feasible.Basis is made in traditional hot direct casting
On, it is only necessary to the aluminium alloy cold burden and cold burden of same alloy composition are fixed and conveying device.Aluminium alloy cold burden can be by squeezing
Pressure, drawing or rolling are obtained, and fixation can be purchased with conveying device with designed, designed or from the market, simple and easy to get.
Brief description of the drawings
Fig. 1 is that double awkward silences at a meeting prepare the device that large-size aluminum alloy justifies ingot casting, and reference is as follows：
In figure, 1. aluminium alloy cold burdens, 2. crystallizers, 3. heat tops, 4. graphite annulus, 5. cooling water tanks, 6. ingot castings, 7. dummy ingots
Head；
Fig. 2 is the micro-organization chart of the gained sample ingot casting of embodiment 2, wherein：(a) center portion of common semi-continuous casting ingot casting
Micro-organization chart；(b) the center portion micro-organization chart of ingot casting prepared by apparatus of the present invention.
Embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Test method described in following embodiments, is conventional method unless otherwise specified；The reagent and material, such as
Without specified otherwise, commercially obtain.
As shown in figure 1, the present invention prepares the device that large-size aluminum alloy justifies ingot casting, including crystallizer 2, heat top 3, graphite annulus
4th, cooling water tank 5, ingot casting 6, dummy bar head 7.In crystallizer 2, top sets heat top 3, and bottom sets graphite annulus 4；The ring of cooling water tank 5
It is around in outside crystallizer 2.Before casting starts, aluminium alloy cold burden 1 is located at directly over the nearly center portion in heat top 3, as shown in Figure 1；Dummy bar head
7 initial positions are located in graphite annulus 4, the bottom of dummy bar head 7 casting machine in succession, to traction ingot casting 6 downwards in casting process.It is described
Cooling water tank bottom have a ring-type apopore, the angle angle between the water (flow) direction and gravity direction of the apopore discharge is
40 degree, make to drain on round ingot casting from the water that apopore is discharged.
The present invention prepares the technique that large-size aluminum alloy justifies ingot casting, comprises the following steps：Alloy melt is through heat top 3 to dummy ingot
First 7 top, when melt solidifies green shell, casting machine travel dummy bar head is moved downward.From heat top, 3 center portion position directly above continue
Several and casting alloy composition identical aluminium alloy cold burden 1 is inserted, in the presence of heat transfer, cold burden melts rapidly.In graphite annulus 4
Under the collective effect of 1 pair of cooling field of aluminium alloy cold burden, melt is realized and once cooled down.Formed after solidified shell, in casting machine
Traction under, continue down to move, in the effect of secondary cooling, complete process of setting.
In following embodiments, the center portion temperature is obtained by the way that thermocouple to be inserted to the melt center of cylinder.
Embodiment 1
Cast heat top internal diameter in the 2A12 aluminium alloy cast ingots that a collection of specification is Φ 200mm, equipment therefor：100mm；Graphite annulus
Highly：32mm；Insertion position is：Tube and pipe of aluminium alloy section circle is overlapped with melt section circle, by internal diameter 10mm, wall thickness 10mm
Tube and pipe of aluminium alloy from melt circle centre position insert.
(1) tube and pipe of aluminium alloy is fixed on 50mm directly over heat top.Casting machine is lifted dummy bar head and risen up into crystallizer,
Along being higher than under graphite annulus along 2mm on dummy bar head, dummy bar head is located at behind setting position, opens cooling water switch, cooling water passes through cold
But water tank enters crystallizer, and is sprayed by the apopore of crystallizer bottom, it is acted on ingot casting surface.
(2) melt that will stabilise at 690~700 DEG C is poured into heat top through chute, and melt is reached through heat top and crystallizer
Dummy bar head top, when melt solidifies green shell, casting machine travel dummy bar head 7 is moved downward, and continuously casting process starts.Work as casting
Make after process stabilization, the tube and pipe of aluminium alloy above melt controls melt center portion temperature to be downwardly into by thermocouple temperature measurement
Degree remains at 638~648 DEG C.
(3) casting process will terminate i.e. when melt liquid level drops to heat top lower section, to stop insertion aluminium alloy cold burden.Casting
Make after end, close cooling water, obtain the high-quality aluminium alloy cast ingot of big specification.
Embodiment 2
Cast heat top internal diameter in 2024 aluminium alloy cast ingots that a collection of specification is Φ 300mm, equipment therefor：196mm；Graphite annulus
Highly：32mm；Insertion position is：Tube and pipe of aluminium alloy section circle is overlapped with melt section circle, by internal diameter 50mm, wall thickness
15mm tube and pipe of aluminium alloy is inserted from melt circle centre position.
(1) 9 a diameter of 10mm 2024 aluminium alloy cold burdens are fixed on 50mm directly over heat top.Casting machine lifts dummy ingot
Head is risen up into crystallizer, and along being higher than under graphite annulus along 2mm on dummy bar head, dummy bar head is located at behind setting position, opens cooling water and opens
Close, cooling water enters crystallizer by cooling water tank, and is sprayed by the apopore of crystallizer bottom, it is acted on casting
Ingot surface.
(2) melt that will stabilise at 690~700 DEG C is poured into heat top through chute, and melt is reached through heat top and crystallizer
Dummy bar head top, when melt solidifies green shell, casting machine travel dummy bar head 7 is moved downward, and continuously casting process starts.Work as casting
Make after process stabilization, the tube and pipe of aluminium alloy above melt controls melt center portion temperature to be downwardly into by thermocouple temperature measurement
Degree remains at 638~648 DEG C.
(3) casting process will terminate i.e. when melt liquid level drops to heat top lower section, to stop insertion aluminium alloy cold burden.Casting
Make after end, close cooling water, obtain the high-quality aluminium alloy cast ingot of big specification.
Be not inserted into aluminium alloy cold burden, i.e., without center portion cooling field under conditions of, keep other steps identical, produce it is a diameter of
300mm aluminium ingot as embodiment 1 contrast groups.
Center portion microstructure such as Fig. 2 (a) and Fig. 2 of ingot casting prepared by common semi-continuous casting ingot casting and apparatus of the present invention
(b) shown in.Common semi-continuous casting ingot casting center portion crystal grain is dendritic crystalline, and size is uneven, and average-size is about 122 μm；This hair
Ingot casting center portion crystal grain prepared by bright device is in subsphaeroidal non-dendritic structure, and size is more uniform, and average-size is about 40 μm.It is right
Than understanding, aluminium alloy cast ingot center portion crystal grain more fine uniform prepared by the present invention.
Embodiment 3
Cast heat top internal diameter in 7075 alloy cast ingots that a collection of specification is Φ 500mm, equipment therefor：378mm；Graphite annulus is high
Degree：35mm；Insertion position is：Tube and pipe of aluminium alloy section circle is overlapped with melt section circle, by internal diameter 200mm, wall thickness 25mm
Tube and pipe of aluminium alloy from melt circle centre position insert.
Technique is identical with technique described in embodiment 2, and difference is：Melt Stability is at 720~730 DEG C in step (2)；Insertion
Melt center portion temperature is maintained at 635~645 DEG C after aluminium alloy cold burden.
Embodiment 4
Cast heat top internal diameter in the 2A11 alloy cast ingots that a collection of specification is Φ 700mm, equipment therefor：560mm；Graphite annulus is high
Degree：38mm；Insertion position is：Tube and pipe of aluminium alloy section circle is overlapped with melt section circle, by internal diameter 400mm, wall thickness 30mm
Inserted simultaneously from melt circle centre position with internal diameter 150mm, wall thickness 30mm tube and pipe of aluminium alloy.
Technique is identical with technique described in embodiment 2, and difference is：Melt Stability is at 710~720 DEG C in step (2)；Insertion
Melt center portion temperature is maintained at 639 DEG C~649 DEG C after aluminium alloy cold burden
Embodiment 5
Cast heat top internal diameter in 7050 alloy cast ingots that a collection of specification is Φ 1000mm, equipment therefor：870mm；Graphite annulus
Highly：40mm；Insertion position is：Tube and pipe of aluminium alloy section circle is overlapped with melt section circle, by internal diameter 800mm, wall thickness
45mm and internal diameter 350mm, wall thickness 45mm tube and pipe of aluminium alloy are simultaneously from the insertion of melt circle centre position.
Technique is identical with technique described in embodiment 2, and difference is：Melt Stability is in 720~730 DEG C of insertions in step (2)
Melt center portion temperature is maintained at 635 DEG C~645 DEG C after aluminium alloy cold burden.
Claims (8)
1. a kind of pair of awkward silence at a meeting continuously prepares the technique that high-quality aluminum alloy justifies ingot casting, it is characterised in that：The technique is hot direct casting
Technique is made, is specially：In circle ingot casting casting process, at least one and aluminium alloy melt composition are inserted to aluminium alloy melt center portion
Identical aluminium alloy cold burden；The aluminium alloy cold burden is persistently inserted in melt in casting process, keeps center portion melt temperature
Within aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature,
Wherein, the aluminium alloy cold burden is tube and pipe of aluminium alloy, and its insertion position is：The aluminum alloy round tube section center of circle and melt section
The center of circle is overlapped；The melt center portion is in the radius circumferential area of circular cross-section 3/4.
2. technique according to claim 1, it is characterised in that：At least one is inserted into aluminium alloy melt molten with aluminium alloy
Body composition identical tube and pipe of aluminium alloy, the tube wall for enabling aluminum alloy to pipe is located in 1/6~3/4 radius circle ring area.
3. technique according to claim 1, it is characterised in that：At least one is inserted into aluminium alloy melt molten with aluminium alloy
Body composition identical tube and pipe of aluminium alloy, the tube wall for enabling aluminum alloy to pipe is located in 1/3~3/4 radius circle ring area.
4. technique according to claim 1, it is characterised in that：The section internal diameter of described tube and pipe of aluminium alloy be 10~
800mm, 10~50mm of wall thickness.
5. technique according to claim 1, it is characterised in that：The aluminium alloy cold burden lasting insertion in casting process is molten
In body, make the temperature of melt circle centre position be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within.
6. technique according to claim 1, it is characterised in that：The technique is carried out in hot-top casting device, wherein institute
Stating hot-top casting device mainly includes heat top (3), graphite annulus (4), cooling water tank (5), crystallizer (2) and dummy bar head (7)；It is described
Cooling water tank (5) is surrounded on crystallizer (2) outside, and described heat top (3) is located under the internal first half of crystallizer (2), hot top (3)
Side is graphite annulus (4), and described dummy bar head (7) is located at internal graphite annulus (4) lower edge of crystallizer (2), the connection of dummy bar head (7) bottom
Casting machine.
7. technique according to claim 6, it is characterised in that：Ring-type apopore is arranged at described cooling water tank (5) bottom
(8), the angle angle between the water (flow) direction and gravity direction of apopore (8) discharge is 20~40 degree, is made from apopore
(8) water of discharge can be drained on round ingot casting.
8. technique according to claim 6, it is characterised in that：Aluminium alloy melt is led on dummy bar head (7) through heat top (3)
Portion, when melt solidifies green shell, casting machine travel dummy bar head (7) is moved downward；Persistently insert some directly over from Re Ding (3)
Aluminium alloy cold burden, the speed that moves down of aluminium alloy cold burden ensures melt center portion temperature in aluminum alloy melt liquidus temperature or higher than liquidus curve
Within 10 DEG C of temperature.
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| CN108568500A (en) * | 2018-05-18 | 2018-09-25 | 东北大学 | A kind of casting device and method inhibiting aluminium alloy cast ingot component segregation |
| CN114619213A (en) * | 2022-05-13 | 2022-06-14 | 鼎镁新材料科技股份有限公司 | Low-stress combined light alloy hub machining method |
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| CN108568500A (en) * | 2018-05-18 | 2018-09-25 | 东北大学 | A kind of casting device and method inhibiting aluminium alloy cast ingot component segregation |
| CN108568502B (en) * | 2018-05-18 | 2019-09-17 | 东北大学 | A kind of device and method of prepared composition Gradient Aluminium Alloy material |
| WO2019218377A1 (en) * | 2018-05-18 | 2019-11-21 | 东北大学 | Casting apparatus and method for suppressing component segregation of aluminium alloy ingots |
| CN114619213A (en) * | 2022-05-13 | 2022-06-14 | 鼎镁新材料科技股份有限公司 | Low-stress combined light alloy hub machining method |
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| CN107234220B (en) | 2019-06-28 |
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