CN107234221A - The technique that a kind of pair of awkward silence at a meeting continuously prepares high-quality aluminum alloy slab ingot - Google Patents
The technique that a kind of pair of awkward silence at a meeting continuously prepares high-quality aluminum alloy slab ingot Download PDFInfo
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- CN107234221A CN107234221A CN201710606092.1A CN201710606092A CN107234221A CN 107234221 A CN107234221 A CN 107234221A CN 201710606092 A CN201710606092 A CN 201710606092A CN 107234221 A CN107234221 A CN 107234221A
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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
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Abstract
The present invention relates to the technique that a kind of pair of awkward silence at a meeting continuously prepares high-quality aluminum alloy slab ingot, belong to aluminium alloy casting field.A kind of pair of awkward silence at a meeting continuously prepares the technique of high-quality aluminum alloy slab ingot, and the technique inserts some and aluminium alloy melt composition identical aluminium alloy cold burden into the rectangular area formed between rectangle tap hole and crystallizer side wall during flat bloom semi-continuous casting；The aluminium alloy cold burden is persistently inserted in melt in casting process, make melt temperature be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within, the aluminium alloy cold burden be solid aluminum alloy sheet material；The rectangular zone width formed between the rectangle tap hole and crystallizer side wall is the length of rectangle tap hole, and length is 1/8~3/4 section between tap hole and crystallizer side wall inwall.Tiny using ingot casting crystal grain produced by the invention, composition is uniform, and alloy cast ingot internal soundness is greatly improved, and improves the processability of alloy.
Description
Technical field
The present invention relates to the technique that a kind of pair of awkward silence at a meeting continuously prepares high-quality aluminum alloy slab ingot, belong to aluminium alloy casting neck
Domain.
Background technology
Aluminium alloy as the light-weighted preferred material of the industrial products such as automobile, bullet train, aircraft and spacecraft, tank,
It is quite varied in sector applications such as Aero-Space, communications and transportation, military projects.For example, large-scale aluminum lorry demand is easy to process
Thick aluminium sheet, body panel and roof panels, aircraft skin plate, the large aluminum alloy profiles of train make the compartment of tank or panzer
Shell, cover plate, deck, dividing plate, and the preparation of these materials is built upon on the basis of the aluminium alloy flat bloom of big specification high-quality,
Both at home and abroad generally using direct-cooling type semi-continuous casting method production aluminium alloy flat bloom.
Direct-cooling type semicontinuous casting technique can realize the automation of technological process, improve production efficiency, and saving is produced into
This, it is ensured that the quality and aluminium alloy recovery rate of product are high, are particularly important and widely used in aluminium alloy industrial production
Solidification means.But, in casting process, after melt composition solidified shell, departed from due to contraction with crystallizer inwall, produced
Gap, the gap full of air can decline the capacity of heat transmission of ingot casting, and this makes solidified shell temperature liter before water spray secondary cooling
, locally there is remelting in height, and the soluterich layer of solidification front is pushed to surface, easily formed partially on ingot casting top layer by molten metal pressure
Knurl is analysed, causes the surface quality of ingot casting to decline；And 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 center portion grain structure on cross section more thick, alloying element gross segregation.In
State patent CN104109784A discloses a kind of big specification rectangle ingot of superhigh intensity Al-Zn-Mg-Cu aluminum alloy and its manufacturer
Method, the dummy bar head upper bottom surface that this method is used is in, covered with pad, to install and scrape in crystalliser feet on hyperboloid, and dummy bar head
Hydrophone.The invention is not required to fine aluminium shop fixtures, and flat bloom surface shell is thin, and ingot surface quality is improved, but the invention does not improve
The problem of ingot casting edge and the larger center portion temperature difference.
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 technique for preparing the high-quality aluminium alloy flat bloom of big specification of production efficiency, and its main thought is to be closed in aluminium
On the basis of golden flat bloom semi-continuous casting, to the tap hole below shunting disk to the rectangular area of crystallizer inwall in insert many
Material composition and melt identical aluminium alloy cold burden, in the presence of heat transfer, cold burden is melted rapidly, and this is provided for center portion melt
One cooling field, efficiently solves 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 of high-quality aluminum alloy slab ingot, at least one cuboid of the technology utilization
Melt is imported crystallizer by shunting disk, the shunting disk rectangular cross section it is long equal in long with crystallizer rectangular cross section
OK；Two relative faces of the cuboid shunting disk are provided with several identical rectangle tap holes, the shunting hole position
In the bottom of two rectangle broadside side walls of shunting disk and symmetrical；
During flat bloom semi-continuous casting, to the rectangular area interpolation formed between rectangle tap hole and crystallizer side wall
Enter some and aluminium alloy melt composition identical aluminium alloy cold burden；The aluminium alloy cold burden persistently inserts melt in casting process
In, make melt temperature be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within,
Wherein, when described shunting disk quantity is single, the center of rectangle shunting disk is overlapped with crystallizer kernel of section；Institute
State shunting disk for it is multiple when, shunting disk size is identical and multiple shunting disks by the center of shunting disk on the long side in crystallizer section
Center line is set；Spacing between shunting disk is identical and shunting disk spacing is no more than the width of shunting disk；
The aluminium alloy cold burden is solid aluminum alloy sheet material；The square formed between the rectangle tap hole and crystallizer side wall
Shape peak width is the length of rectangle tap hole, and length is 1/8~3/4 section between tap hole and crystallizer side wall inwall.
In above-mentioned technical proposal, described pair of awkward silence at a meeting continuously prepares the technique of high-quality aluminum alloy slab ingot, and the technique can be with
On direct-cooled semicontinuous casting technique or the basis of the modified technique of direct-cooled semi-continuous casting (such as low liquid level casting, hot direct casting is made)
It is upper to carry out.During flat bloom semi-continuous casting, inserted into Fig. 1 in rectangular area shown in dotted line it is some with aluminium alloy melt into
Divide identical aluminium alloy cold burden；The aluminium alloy cold burden is persistently inserted in melt in casting process, is maintained at melt temperature
Aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within.
Rectangular zone width shown in dotted line is the length of rectangle tap hole in Fig. 1, and length is tap hole and crystallizer side wall
1/8~3/4 section between inwall (in terms of apart from the distance of tap hole).
In above-mentioned technical proposal, the shunting disk is the shunting disk of rectangular shape, and the shunting disk is cuboid cylinder
Body, it includes a rectangular base plate and four side walls, four side walls be respectively correspondence rectangular base plate it is long while two rectangles it is long while
Two rectangle broadside side walls of side wall and correspondence rectangular base plate broadside.The shunting disk is located at the top of crystallizer, and by rectangle
The long parallel direction when long with crystallizer square-section of bottom plate is set.
In above-mentioned technical proposal, described two broadside side walls of shunting disk are provided with some tap holes, and tap hole runs through side wall,
The melt in cuboid shunting disk is allowd to flow into crystallizer by the tap hole.Tap hole of the present invention is rectangle,
The size of tap hole is described in the present invention using length and height, wherein, the length direction of tap hole is parallel to bottom plate rectangle
The direction of broadside, short transverse is the direction parallel to cuboid shunting disk height.
In above-mentioned technical proposal, shunting disk can be one or more.When the shunting disk quantity described in the shunting disk is one
When individual, the center of the rectangle shunting disk is overlapped with crystallizer kernel of section；When the shunting disk is multiple, shunting disk size phase
Same and multiple shunting disks are set by center line of the center of shunting disk on the long side in crystallizer section；Spacing between shunting disk is identical
And shunting disk spacing is no more than the width of shunting disk.
The tap hole being located on two broadside side walls is symmetrical, and symmetrical refer to is located at two broadside side walls
On tap hole it is symmetrical with the long side center line of shunting disk and simultaneously symmetrical with the center line of shunting disk broadside.
The quantity and size and the specification of casting alloy of aluminium alloy cold burden of the present invention, the quantity of shunting disk, shunting
The size in hole is related.When casting alloy thickness is larger, the quantity of shunting disk is more, and the quantity of tap hole is more, inserts cold burden
Quantity it is more, size is larger；When casting alloy thickness is smaller, the quantity of shunting disk is fewer, inserts the negligible amounts of cold burden,
Size is smaller.
The cross-sectional distribution of solid aluminum alloy sheet material of the present invention is shown in Fig. 1, its rectangular cross-section, and the present invention is utilized
Width (long side) and thickness (short side) describe the sectional dimension of sheet material.The rectangular cross-section of the solid aluminum alloy sheet material, it is described
Solid aluminum alloy sheet material is inserted in melt in the following manner：Sheet material cross-sectional width direction and tap hole vertical arrangement or/and sheet material
Width and tap hole parallel arrangement.
When aluminum alloy plate materials width of the present invention is with tap hole vertical arrangement, the thickness of sheet material is no more than shunting
The length in hole；When aluminum alloy plate materials width is with tap hole parallel arrangement, the width of sheet material is no more than the length of tap hole.
Further, it is preferable to it is described to tap hole with inserting some in 1/8~1/2 section rectangular area of crystallizer inwall
With aluminium alloy melt composition identical aluminium alloy cold burden.
Further, the width of described aluminum alloy plate materials is 10~200mm, and thickness is 4~50mm；Insert aluminium alloy plate
The quantity of material is 2~40；Further, the thickness or width of described aluminum alloy plate materials are identical with shunting hole length.
In casting ingot process of the present invention, the aluminium alloy cold burden is persistently inserted in melt in casting process, makes melt
Temperature is maintained at aluminum alloy melt liquidus temperature between (+10 DEG C of aluminum alloy melt liquidus temperature).
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 melt temperature all the time
Within aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature.Further, preferably test melt is high apart from liquid level
Degree 1/4 and the temperature of the section intersection of width 1/4, keep the temperature all the time in aluminum alloy melt liquidus temperature or higher than liquid phase
Within 10 DEG C of line temperature.
It is of the present invention continuous to prepare one preferred technical scheme of cast aluminium alloy flat ingot and be：
(1) before casting process starts, aluminium alloy cold burden is fixed on directly over crystallizer；
(2) aluminium alloy melt is drained into crystallizer by the tap hole of shunting disk bottom, when melt solidifies green shell
When, casting machine travel dummy bar head is moved downward, and continuously casting process starts；After casting process is stable, above melt
Aluminium alloy cold burden is downwardly into, and controls melt temperature to be maintained at aluminum alloy melt liquidus temperature or higher than liquid phase by thermocouple temperature measurement
Within 10 DEG C of line temperature；
(3) when melt liquid level is dropped to below crystallizer, stop insertion cold burden, aluminium alloy cold burden is raised on crystallizer
Side；After casting terminates, 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 flat bloom 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) realize that the device of this technique is simple, cost-effective, industrial applications are feasible.Partly connect in traditional direct water-cooling
On the basis of continuous casting, it is only necessary to which the aluminium alloy cold burden and cold burden of same alloy composition are fixed and conveying device.Aluminium alloy cold burden
It can be obtained by casting, extruding or rolling, fixation can be purchased with conveying device with designed, designed or from the market, simply
It is easy to get.
Brief description of the drawings
During Fig. 1 is double awkward silence at a meeting semi-continuous casting, the insertion position of cold burden and the schematic top plan view of inserted mode, accompanying drawing
Mark is as follows：
In figure, 1. crystallizers, 2. shunting disks, 3. tap holes, 4. can be inserted into the rectangular area of cold burden, 5. cold burden widths
With the inserted mode of tap hole vertical arrangement, the inserted mode of 6. cold burden widths and tap hole parallel arrangement；
Fig. 2 (a) is the schematic perspective view of shunting disk described in embodiment 1；(b) show for the section of shunting disk described in embodiment 1
It is intended to；
Fig. 3 is the micro-organization chart of the gained sample ingot casting of embodiment 2, wherein：(a) prepared by direct water-cooling semi-continuous casting
The center portion micro-organization chart of ingot casting；(b) the center portion micro-organization chart of ingot casting prepared by present invention process；
Fig. 4 is that the shunting disk of embodiment 5 sets schematic diagram.
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.
The technique is carried out in following casting devices：The casting device mainly includes shunting disk, graphite annulus, cooling water
Case, crystallizer and dummy bar head；The cooling water tank is surrounded on outside crystallizer, and described shunting disk is located at crystallizer top, knot
Brilliant device lower inside is graphite annulus, and described dummy bar head is located at graphite annulus lower edge inside crystallizer, dummy ingot head connection casting machine；
Circular water tank some apopores of one week, the water (flow) direction of the apopore discharge and gravity side are arranged at described cooling water tank bottom
Angle angle between is 30 degree, makes to drain on slab ingot from the water that apopore is discharged.
The present invention prepares the technique of high-quality aluminum alloy slab ingot, comprises the following steps：Aluminium alloy melt passes through under shunting disk
The tap hole in portion is drained into crystallizer, when melt solidifies green shell, and casting machine travel dummy bar head is moved downward.From crystallizer
Position directly above persistently inserts several and casting alloy composition identical aluminium alloy cold burden, and in the presence of heat transfer, cold burden is rapid
Fusing.Under double collective effects for cooling down fields inside and outside graphite annulus and aluminium alloy cold burden, melt is realized and once cooled down.Form solidification
After green shell, under the traction of casting machine, continue down to move, in the effect of secondary cooling, complete process of setting, pass through thermocouple
Thermometric control melt temperature be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within.
In following embodiments, the center portion temperature by thermocouple by inserting melt apart from liquid level 1/4 and width side
Obtained to 1/4 section intersection position, described semicontinuous casting technique is traditional direct water-cooling semicontinuous casting technique.
Embodiment 1
A collection of specification is cast for width 150mm, thickness 60mm 2A12 aluminium alloy flat blooms.
Shunting disk 1, the long 60mm of cross section of inboard wall size, width 20mm, shunting disk wall thickness 5mm；2 tap holes are located at respectively
Middle part below the wall of shunting disk broadside side, long 10mm, high 10mm, as shown in Figure 2；The quantity and size of cold burden：2 wide 10mm, thickness
4mm aluminum alloy plate materials；Insertion position is：Apart from tap hole 15mm, width and tap hole parallel arrangement.
(1) 2 wide 10mm, thickness 4mm 2A12 aluminium alloy cold burdens are fixed on 50mm directly over crystallizer relevant position.Casting
The machine of making is lifted dummy bar head and 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,
Cooling water switch is opened, cooling water enters crystallizer by cooling water tank, and is sprayed by the apopore of crystallizer bottom, makes it
Ingot casting surface can be acted on.
(2) melt that will stabilise at 690~700 DEG C enters shunting disk through chute, is discharged into by the tap hole of its underpart
Into crystallizer, when melt solidifies green shell, casting machine travel dummy bar head is moved downward.After casting process is stable, it is located at
Aluminum alloy plate materials above melt are downwardly into, and control melt temperature to remain at 638~648 DEG C by thermocouple temperature measurement.
(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 high-quality aluminium alloy flat bloom.
Embodiment 2
A collection of specification is cast for wide 400mm, thickness 280mm 7050 aluminium alloy flat blooms.
Shunting disk 1, the long 190mm of cross section of inboard wall size, width 90mm, shunting disk wall thickness 10mm；2 tap holes distinguish position
Middle part, long 40mm, high 10mm below the wall of shunting disk broadside side；The quantity and size of cold burden：8 wide 40mm, thickness 10mm aluminium
Sheet alloy；Insertion position is：4 cold burdens are inserted near each tap hole, first cold burden is apart from tap hole 30mm, width side
To with tap hole parallel arrangement, adjacent two spacing 10mm.
(1) 8 wide 40mm, thickness 10mm 7050 aluminium alloy cold burdens are fixed on 50mm directly over crystallizer relevant position.
Casting machine is lifted dummy bar head and risen up into crystallizer, and along being higher than under graphite annulus along 2mm on dummy bar head, dummy bar head is located at setting position
Afterwards, cooling water switch is opened, cooling water enters crystallizer by cooling water tank, and is sprayed by the apopore of crystallizer bottom,
It is set to act on ingot casting surface.
(2) melt that will stabilise at 710~720 DEG C enters shunting disk through chute, is discharged into by the tap hole of its underpart
Into crystallizer, when melt solidifies green shell, casting machine travel dummy bar head is moved downward.After casting process is stable, it is located at
Aluminum alloy plate materials above melt are downwardly into, and control melt temperature to remain at 635~645 DEG C by thermocouple temperature measurement.
(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 high-quality aluminium alloy flat bloom.
Be not inserted into aluminium alloy cold burden, i.e., without center portion cooling field under conditions of, keep other steps identical, production is wide
400mm, thickness 280mm 7075 aluminium alloy flat blooms as embodiment 2 contrast groups.
Center portion microstructure such as Fig. 3 (a) and Fig. 3 of ingot casting prepared by direct-cooled semi-continuous casting ingot casting and apparatus of the present invention
(b) shown in.Direct-cooled semi-continuous casting ingot casting center portion crystal grain is dendritic crystalline, and size is uneven, and average-size is about 108 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 38 μm.Contrast
Understand, aluminium alloy cast ingot center portion crystal grain more fine uniform prepared by the present invention.
Embodiment 3
A collection of specification is cast for width 600mm, thickness 450mm 2A11 aluminium alloy flat blooms.
Shunting disk 1, the long 300mm of cross section of inboard wall size, width 200mm, shunting disk wall thickness 10mm；2 tap hole difference
Middle part, long 200mm, high 5mm below the wall of shunting disk broadside side；The quantity and size of cold burden：2 wide 200mm, thickness 10mm
Aluminum alloy plate materials；Insertion position is：Apart from tap hole 30mm, width and tap hole parallel arrangement.
710~720 DEG C of melt cast temperature；Melt controls temperature at 639 DEG C~649 DEG C.
Embodiment 4
A collection of specification is cast for wide 850mm, thickness 500mm 7075 aluminium alloy flat blooms.
2 identical shunting disks, shunting disk is located on the long side center line in crystallizer cross section and symmetrical with broadside center line
Set, the two spacing 60mm；The long 400mm of shunting disk cross section of inboard wall size, width 80mm, shunting disk wall thickness 12mm；Each shunting
Disk is located in the middle part of broadside down either side provided with two tap holes, tap hole, long 50mm, high 10mm；The quantity and size of cold burden：4
The wide 70mm of root, thickness 50mm aluminum alloy plate materials；Insertion position is：Each tap hole is placed around a cold burden, apart from tap hole
45mm, width and tap hole vertical arrangement.
720~730 DEG C of melt cast temperature；Melt controls temperature at 635 DEG C~645 DEG C.
Embodiment 5
A collection of specification is cast for wide 1000mm, thickness 700mm 2024 aluminium alloy flat blooms.
2 identical shunting disks, shunting disk is located on the long side center line in crystallizer cross section and symmetrical with broadside center line
Set, the two spacing 120mm；The long 500mm of cross sectional dimensions, width 120mm, shunting disk wall thickness 15mm；Tap hole is located at broadside two
Side corner sections, totally 8 tap holes, respectively long 30mm, high 10mm；The quantity and size of cold burden：40 wide 30mm, thickness 10mm aluminium are closed
Golden plate material；Insertion position is：Every 5 are inserted near a tap hole, and apart from tap hole 30mm, width is put down with tap hole
Row arrangement, adjacent two spacing 20mm, as shown in Figure 4.
690~700 DEG C of melt cast temperature；Melt controls temperature at 638 DEG C~648 DEG C.
Claims (6)
1. the technique that a kind of pair of awkward silence at a meeting continuously prepares high-quality aluminum alloy slab ingot, it is characterised in that：The technology utilization at least one
Melt is imported crystallizer, long side and the crystallizer rectangular cross section of the shunting disk rectangular cross section by individual cuboid shunting disk
Long side it is parallel；Two relative faces of the cuboid shunting disk are provided with several identical rectangle tap holes, institute
Tap hole is stated positioned at the bottom of two rectangle broadside side walls of shunting disk and symmetrical；
During flat bloom semi-continuous casting, if being inserted into the rectangular area formed between rectangle tap hole and crystallizer side wall
Dry and aluminium alloy melt composition identical aluminium alloy cold burden；The aluminium alloy cold burden is persistently inserted in melt in casting process,
Make melt temperature be maintained at aluminum alloy melt liquidus temperature or higher than 10 DEG C of liquidus temperature within,
Wherein, when described shunting disk quantity is single, the center of rectangle shunting disk is overlapped with crystallizer kernel of section；Described point
Flow table for it is multiple when, the center that shunting disk size is identical and multiple shunting disks are by the center of shunting disk on the long side in crystallizer section
Line is set；Spacing between shunting disk is identical and shunting disk spacing is no more than the width of shunting disk；
The aluminium alloy cold burden is solid aluminum alloy sheet material；The rectangle region formed between the rectangle tap hole and crystallizer side wall
Field width degree is the length of rectangle tap hole, and length is 1/8~3/4 section between tap hole and crystallizer side wall inwall.
2. technique according to claim 1, it is characterised in that：The rectangular cross-section of the solid aluminum alloy sheet material, it is described
Solid aluminum alloy sheet material is inserted in melt in the following manner：Sheet material cross-sectional width direction and tap hole vertical arrangement or/and sheet material
Width and tap hole parallel arrangement.
3. technique according to claim 1, it is characterised in that：Described aluminum alloy plate materials width is vertical with tap hole
During arrangement, the thickness of sheet material is no more than the length of tap hole；When aluminum alloy plate materials width is with tap hole parallel arrangement, sheet material
Width be no more than tap hole length.
4. technique according to claim 1, it is characterised in that：To 1/8th~1/2 area of the tap hole and crystallizer inwall
Section inserts some and aluminium alloy melt composition identical aluminium alloy cold burden in rectangular area.
5. technique according to claim 1, it is characterised in that：The width of described aluminum alloy plate materials is 10~200mm, thick
Spend for 4~50mm；The quantity for inserting aluminum alloy plate materials is 2~40.
6. technique according to claim 3, it is characterised in that：The thickness or width and tap hole of described aluminum alloy plate materials
Length is identical.
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| CN201710606092.1A CN107234221B (en) | 2017-07-24 | 2017-07-24 | A kind of technique that double awkward silences at a meeting continuously prepare high-quality aluminum alloy slab ingot |
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Cited By (1)
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| CN107716886A (en) * | 2017-10-31 | 2018-02-23 | 江苏常铝铝业股份有限公司 | For producing the crystallizer casting buoy of aluminium alloy cast ingot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716886A (en) * | 2017-10-31 | 2018-02-23 | 江苏常铝铝业股份有限公司 | For producing the crystallizer casting buoy of aluminium alloy cast ingot |
| CN107716886B (en) * | 2017-10-31 | 2024-02-20 | 江苏常铝铝业集团股份有限公司 | Crystallizer casting buoy for producing aluminum alloy cast ingot |
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| CN107234221B (en) | 2019-06-04 |
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