CN109108240A - A kind of continuous casting production air swirl filling pipe end brick cup - Google Patents
A kind of continuous casting production air swirl filling pipe end brick cup Download PDFInfo
- Publication number
- CN109108240A CN109108240A CN201811286126.4A CN201811286126A CN109108240A CN 109108240 A CN109108240 A CN 109108240A CN 201811286126 A CN201811286126 A CN 201811286126A CN 109108240 A CN109108240 A CN 109108240A
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- Prior art keywords
- brick
- air
- filling pipe
- pipe end
- brick cup
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- 239000011449 brick Substances 0.000 title claims abstract description 170
- 238000009749 continuous casting Methods 0.000 title claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 11
- 239000010431 corundum Substances 0.000 claims description 10
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052863 mullite Inorganic materials 0.000 claims description 8
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 7
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- -1 magnesium aluminate Chemical class 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 3
- WDEOTCWPXLWTRP-UHFFFAOYSA-N [C+4].[O-2].[Al+3] Chemical compound [C+4].[O-2].[Al+3] WDEOTCWPXLWTRP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052596 spinel Inorganic materials 0.000 claims description 3
- 239000011029 spinel Substances 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 abstract description 43
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 32
- 239000010813 municipal solid waste Substances 0.000 abstract description 21
- 229910052786 argon Inorganic materials 0.000 abstract description 16
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 238000007667 floating Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 101150038956 cup-4 gene Proteins 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/58—Pouring-nozzles with gas injecting means
-
- 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
-
- 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
- B22D11/116—Refining the metal
- B22D11/117—Refining the metal by treating with gases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of continuous casting production air swirl filling pipe end brick cups, including air brick, gas chamber, air inlet pipe and filling pipe end brick cup ontology；Air brick is located at the top of filling pipe end brick cup, is placed in filling pipe end brick cup ontology；Air brick includes top sector permeable portion and lower part annular shape permeable portion；Gas chamber is located between air brick lower part annular shape permeable portion and filling pipe end brick cup ontology, and is connected to air brick；The side of one end connection gas chamber of air inlet pipe, the other end are pierced by from the side of filling pipe end brick cup ontology and are connected with external connecting pipe.The present invention forms annular air curtain by the way that argon gas is blown into fan-shaped air brick, promote the floating and removal of field trash, molten steel swirl channel is constituted in fan-shaped air brick helical gap simultaneously, realize the rotational flow of molten steel in middle water containing opening, reduction field trash sticks with mouth of a river inner wall, the collision for promoting minute bubbles and field trash in entry nozzle plays the role of cleaning molten steel, prevents nozzle blocking, reduces slab rimhole.
Description
Technical field
The invention belongs to metallurgical technology fields, are related to Ferrous Metallurgy continuous casting production metallurgical technology technology, and in particular to
A kind of continuous casting production air swirl filling pipe end brick cup.
Background technique
In continuous casting, middle water containing opening is the channel that continuous casting steel enters crystallizer from tundish, and having prevents centre
The effects of packet beam secondary oxidation, molten steel splashing and wall surface slag entrapment in mold and improvement crystallizer flow distribution, to raising continuous casting
Base quality improves working conditions, stabilizing continuous casting operation and prevents surface defect of bloom etc. and have remarkable result.However, one
In the continuous casting of a little steel grades, dystectic solid inclusions easily in mouth of a river inner wall adhesion deposition, cause nozzle clogging to block.One
Nozzle blocking occurs for denier, and bias current occurs in molten steel in the mouth of a river, and tamper is possible to rush in crystallizer molten steel suddenly, causes crystallizer
Liquid level big ups and downs even cause molten steel slag, influence the more furnace casting rates of continuous casting, tundish pours the technical-economic indexes such as steel stove number.
To prevent nozzle blocking, slab quality is improved, people take a large amount of technological means, these technological means are one
Determine to improve nozzle blocking behavior in degree, but does not settle the matter once and for all.
The technical way taken at present and there are problems to include:
(1) molten steel cleanliness is improved, Al in molten steel is reduced2O3The content of equal field trashes.Blocking mouth of a river field trash only accounts for molten steel
In total field trash very small part, reduce the quantity for flowing through mouth of a river molten steel inclusion, although being conducive to mitigate nozzle blocking,
It is merely to improve Cleanliness of Molten Steel can't thoroughly solve the problems, such as nozzle blocking.
(2) mouth of a river material is improved.Weaken the wetability of molten steel and mouth of a river inner wall, reduce molten steel inclusion and mouth of a river inner wall
Reactivity, the field trash for reducing adhesion strength of the field trashes such as aluminium oxide on the inner wall of the mouth of a river, mouth of a river inner wall being promoted to generate are eutectic
Point substance, these measures advantageously reduce nozzle blocking, but the production cost at this mouth of a river is excessively high, difficult in actual production
To promote and apply.
(3) stopper or filling pipe end Argon technology are used.It can prevent Al2O3It is deposited etc. mouth of a river inner wall is mixed in, dispersion rupture
Bubble can rinse the field trash being deposited on the inner wall of the mouth of a river, capture adherency field trash, can not only slow down nozzle blocking, but also can
To improve mouth of a river Biased flow phenomenon.However negative effect can be brought, i.e. the tiny bubble in part enters in crystallizer to come not with molten steel
And float, it adheres on slab shell, forms slab rimhole or slag inclusion type bubble.
(4) electromagnetic eddy flow downspout is used.Make molten steel rotational flow in the mouth of a river using electromagnetic force, eliminate in filling pipe end due to
The molten steel flow segregation phenomenon that necking effect generates, to prevent field trash from adhering in mouth of a river inner wall, reaching prevents nozzle blocking
Purpose；Promote the collision of molten steel inclusion in the mouth of a river to grow up simultaneously, is conducive to floating removal of the field trash in crystallizer.
But since middle water containing opening locational space is limited, installation electromagnetic eddy flow device is relatively difficult, while electromagnetic eddy flow device is installed, made
With higher with maintenance cost, its extensive use in the industrial production is limited.
(5) technology that some granted patents are taken.(a) Chinese utility model patent of Publication No. CN202539509U
A kind of continuous casting tundish orientation Argon ventilating filling pipe end is disclosed, is embedded in ontology and melts sizing fiber in advance, after product is fired,
In mouth of a river inner wall bowl portion to cyclic annular equally distributed isometrical circular hole is formed between quick change face in specified interval, main body is by carbon containing nothing
Machine nonmetallic composite is made.It is the isometrical of 0.2~0.8mm that the inner cavity at the mouth of a river, which is evenly distributed with 100~300 diameters,
Round air hole, circular hole and horizontal direction form angle α, these air holes are connected with the intrinsic gas chamber in the mouth of a river.Argon gas etc.
Inert gas passes through gas chamber, is overflowed by air hole, the inner wall at the mouth of a river forms air film in homogeneous thickness, prevents three oxygen in molten steel
Change the impurity such as two aluminium attachment blocking mouth of a river inner cavity.But this ventilating filling pipe end can only mitigate in molten steel field trash in filling pipe end
The adherency of wall can not effectively remove the field trash in molten steel, and due to complex manufacturing technology, higher cost, in practical life
It is difficult to promote and apply in production.(b) Chinese utility model patent of Publication No. CN204035547U discloses among a kind of continuous casting
Packet ventilating filling pipe end brick cup, including filling pipe end brick cup ontology, ventilative ring and gas chamber box.Filling pipe end brick cup ontology includes integrally formed
Convex platform and lower convex platform, the outer diameter of lower convex platform is less than convex platform.The ventilative ring of circular ring shape and the gas chamber box of annular are located at upper water
In the convex platform of mouth brick cup ontology, gas chamber box top is connected to ventilative ring, bottom is connected with air inlet pipe.The annular width of ventilative ring
It is gradually reduced from lower end to upper end.After being blown into argon gas, the air curtain barricade wall of annular is formed around filling pipe end, to upper water will be entered
The molten steel of mouth carries out air purge, promotes the floating of field trash, while alleviating the filling pipe end dross problem of tundish.But argon blowing
The part Argon Bubble of generation can enter in crystallizer with molten steel, and the Argon Bubble of diameter very little is possible to solidify not as good as upper in steel
It floats and is precipitated, easily cause slab rimhole defect.Simultaneously because microbubble is less than 50um small folder below to equivalent diameter
Sundries poor removal effect, relies solely on that BOTTOM ARGON BLOWING is limited to filling pipe end ponding is mitigated, and effect is simultaneously in production application
It is undesirable.(c) Chinese utility model patent of Publication No. CN203356556U discloses a kind of tundish air swirl mouth of a river,
There is liner inside the ontology of the mouth of a river, there are bore passages in liner, there is gas chamber circumferential weld between mouth of a river ontology and liner.Pass through
A large amount of, certain pore size the channel for being blown into inert gas is arranged in the channel of tundish upper nozzle or submersed nozzle, and
It is arranged along certain angle, the inert gas bubbles of available desirable amount, and under the action of eddy flow, the collision of bubble is long
Big probability increases, and is easy evolution of floating in crystallizer, while inert gas flow generates eddy flow along steel stream circumferencial direction, makes steel
Stream is more evenly distributed on the channel circumference direction of the mouth of a river, slows down and even has been eliminated Biased flow phenomenon.But due to being mingled in casting process
Constantly at the mouth of a river, inner wall sticks object, easily causes air-hole blockage, so that air flow method is uneven, eddy flow decreased effectiveness makes simultaneously
Complex process, industrial application are restricted.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention provides water on a kind of continuous casting production air swirl
Mouth brick cup, forms annular air curtain by the way that argon gas is blown into fan-shaped air brick, carries out air purge to the molten steel for entering filling pipe end, utilizes ring
The non-metallic inclusion particles in a large amount of micro-bubbles and molten steel in shape air curtain barrier, which collide, to adhere to and is captured, and promotees
Into the floating and removal of field trash, while molten steel swirl channel is formed by fan-shaped air brick helical gap and realizes tundish
The rotational flow of molten steel in the mouth of a river can reduce sticking for field trash and mouth of a river inner wall, promote bubble and field trash in entry nozzle
Collision grow up and absorption of the bubble to field trash, play cleaning molten steel, prevent nozzle blocking, reduce slab rimhole
Effect.
For this purpose, the invention adopts the following technical scheme:
A kind of continuous casting production air swirl filling pipe end brick cup, including air brick, gas chamber, air inlet pipe and filling pipe end brick cup
Ontology；The air brick is located at the top of filling pipe end brick cup, is placed in filling pipe end brick cup ontology；The air brick includes upper fan
Shape permeable portion and lower part annular shape permeable portion, the non-breathable gap between the sector permeable portion of top form spiral helicine steel
Liquid swirl channel, lower part annular shape permeable portion for uniform air pressure be connected to gas；The gas chamber is located at air brick lower part circle
Between cyclic annular permeable portion and filling pipe end brick cup ontology, and it is connected to air brick；The side of one end connection gas chamber of the air inlet pipe
Portion, the other end are pierced by from the side of filling pipe end brick cup ontology and are connected with external connecting pipe.
Preferably, the top sector permeable portion of the air brick is uniformly distributed by center circular array of the mouth of a river, thoroughly
The top and the bottom internal-and external diameter of gas brick is identical.
Preferably, the top sector permeable portion of the air brick stretch out the filling pipe end brick cup ontology upper surface it is certain
Highly, for enhancing swirl strength.
Preferably, the type of the air brick include dispersive air brick, slot-type ventilating brick, straight-through cellular type air brick,
Complex air-permeable brick.
Preferably, the gas chamber generally circular ring shape, is integrally formed using can, and the cross section of can is rectangle,
Its width is suitable with the width of air brick.
Preferably, the air inlet pipe is releasable connection, using Heat-Resisting Stainless Steel Tube.
Further, the releasable connection is to be threadedly coupled.
Preferably, the top of the filling pipe end brick cup ontology is located at the position of air brick inner arc side there are the non-of suitable distance
Permeable portion, for guaranteeing the erosion wear resistance of filling pipe end brick cup；Be provided in the middle part of filling pipe end brick cup ontology up and down it is perforative on
Mouth of a river mounting hole, the cylindrical hole of rotary table through-hole and lower part including top.
Preferably, the material of the air brick includes mullite, corundum, magnesia, zirconium oxide, chromium oxide, silica, has
Machine fiber, organic modifiers, aluminous cement；The material of the filling pipe end brick cup ontology includes graphite, mullite, corundum, gold
Belong to silicon powder, metallic aluminium powder, magnesium aluminate spinel, zirconium oxide, aluminium oxide-carbon.
Compared with prior art, the beneficial effects of the present invention are:
(1) the present invention provides a kind of continuous casting production air swirl filling pipe end brick cup, air brick is divided into upper fan
Shape permeable portion and lower annular permeable portion, its underpart annular gas permeable part are directly connected to gas chamber, play connection gas and
The effect of uniform air pressure tolerance.
(2) after being blown into argon gas, gas is overflowed from fan-shaped air brick aperture, and complete annular air curtain is formed around filling pipe end
Barrier carries out air purge to the molten steel that will enter filling pipe end, promotes the floating and removal of field trash, purified molten steel.
(3) after being blown into argon gas, helical gap is formed by molten steel swirl channel between fan-shaped air brick, can be realized
The rotational flow of molten steel, prevents clogging of tundish nozzle in the mouth of a river.
(4) after being blown into argon gas, the neighbouring Argon of filling pipe end can be made to be formed by microbubble and entered inside filling pipe end with molten steel,
Under the effect of eddy flow molten steel, is conducive to the collision of bubble and field trash in the mouth of a river and grows up and absorption of the bubble to field trash,
To be conducive to the floating removal of bubble, field trash in crystallizer, the probability of happening of slab rimhole is reduced.
Detailed description of the invention
Fig. 1 is a kind of top view of continuous casting production air swirl filling pipe end brick cup provided by the embodiment of the present invention 1.
Fig. 2 is a kind of section view knot of continuous casting production air swirl filling pipe end brick cup provided by the embodiment of the present invention 1
Structure schematic diagram.
Fig. 3 is air brick in a kind of continuous casting production air swirl filling pipe end brick cup provided by the embodiment of the present invention 1
Three dimensional structure diagram.
Fig. 4 is a kind of top view of continuous casting production air swirl filling pipe end brick cup provided by the embodiment of the present invention 2.
Fig. 5 is a kind of section view knot of continuous casting production air swirl filling pipe end brick cup provided by the embodiment of the present invention 2
Structure schematic diagram.
Fig. 6 is air brick in a kind of continuous casting production air swirl filling pipe end brick cup provided by the embodiment of the present invention 2
Three dimensional structure diagram.
Description of symbols: 1, air brick；2, gas chamber；3, air inlet pipe；4, filling pipe end brick cup ontology.
Specific embodiment
With reference to the accompanying drawing and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
A kind of continuous casting production air swirl filling pipe end brick cup, including air brick 1, gas chamber 2, air inlet pipe 3 and filling pipe end
Brick cup ontology 4；The air brick 1 is located at the top of filling pipe end brick cup, is placed in filling pipe end brick cup ontology 4；The air brick 1 wraps
Top sector permeable portion and lower part annular shape permeable portion are included, the non-breathable gap between the sector permeable portion of top forms spiral shell
Revolve shape molten steel swirl channel, lower part annular shape permeable portion for uniform air pressure be connected to gas；The gas chamber 2 is located at ventilative
Between 1 lower part annular shape permeable portion of brick and filling pipe end brick cup ontology 4, and it is connected to air brick 1；One end of the air inlet pipe 3
The side of gas chamber 2 is connected, the other end is pierced by from the side of filling pipe end brick cup ontology 4 and is connected with external connecting pipe.
Specifically, the top sector permeable portion of the air brick 1 is uniformly distributed by center circular array of the mouth of a river, thoroughly
The top and the bottom internal-and external diameter of gas brick 1 is identical.
Specifically, the top sector permeable portion of the air brick 1 stretches out the upper surface one of the filling pipe end brick cup ontology 4
Fixed height, for enhancing swirl strength.
Specifically, the type of the air brick 1 include dispersive air brick, slot-type ventilating brick, straight-through cellular type air brick,
Complex air-permeable brick.
Specifically, the gas chamber 2 generally circular ring shape, is integrally formed using can, and the cross section of can is rectangle,
Its width is suitable with the width of air brick 1.
Specifically, the air inlet pipe 3 is releasable connection, using Heat-Resisting Stainless Steel Tube.
Specifically, the releasable connection is to be threadedly coupled.
Specifically, the top of the filling pipe end brick cup ontology 4 is located at the position of 1 inner arc side of air brick there are suitable distances
Non-breathable part, for guaranteeing the erosion wear resistance of filling pipe end brick cup；The middle part of filling pipe end brick cup ontology 4 is provided with perforative up and down
Filling pipe end mounting hole, the cylindrical hole of rotary table through-hole and lower part including top.
Specifically, the material of the air brick 1 include mullite, corundum, magnesia, zirconium oxide, chromium oxide, silica,
Organic fiber, organic modifiers, aluminous cement；The material of the filling pipe end brick cup ontology 4 include graphite, mullite, corundum,
Metallic silicon power, metallic aluminium powder, magnesium aluminate spinel, zirconium oxide, aluminium oxide-carbon.
Embodiment 1
As shown in Figure 1-Figure 3, the embodiment of the present invention 1 discloses a kind of continuous casting production air swirl filling pipe end brick cup,
Including filling pipe end brick cup ontology 4, air brick 1, gas chamber 2 and air inlet pipe 3；The top of filling pipe end brick cup is equipped with air brick 1, described
Filling pipe end brick cup ontology 4 in place air brick 1, the air brick 1 be dispersive air brick, including integrally formed top
Fan-shaped permeable portion and lower part annular shape permeable portion, its underpart annular formations play uniform air pressure and the work for being connected to gas
With the non-breathable gap between fan-shaped air brick forms spiral helicine molten steel swirl channel；Ring-shaped air chamber 2 is located under air brick 1
Between portion's annular formations and filling pipe end brick cup ontology 4, gas chamber 2 is located at ventilative ring bottom and is connected to air brick 1, and gas chamber 2 connects
It is connected to air inlet pipe 3；One end of air inlet pipe 3 is connected to the side of ring-shaped air chamber 2, and the other end is from the side of filling pipe end brick cup ontology 4
It is pierced by and is connected with external connecting tube.
1 top sector permeable portion of air brick is uniformly distributed by center circular array of the mouth of a river, and the ventilative number of sector is 8
It is a；1 top and the bottom internal-and external diameter of air brick is identical, internal diameter 65mm, outer diameter 155mm, and air brick height is 60mm, wherein on
Portion's sector permeable portion height is 40mm；Radius of circle where the arc of each sector permeable portion two sides is 350mm, table on air brick 1
Face is equal with filling pipe end brick cup 4 upper surfaces of ontology.
Whole gas chamber 2 is in circular ring shape, is integrally formed using can, and the cross section of can is rectangle, and rectangle width is
74mm is highly 20mm.Air inlet pipe 3 uses heat-resistance stainless steel, and specification is in charge of for four, preferably, air inlet pipe 3 is that screw thread connects
It connects.
4 shape of filling pipe end brick cup ontology is rectangular, side length 380mm, is highly 212mm, in filling pipe end brick cup ontology 4
Portion is provided with perforative filling pipe end mounting hole up and down, the cylindrical hole of truncated cone-shaped through-hole and lower part including top, filling pipe end
It is 110mm that diameter is installed on top, and it is 128mm that diameter is installed in lower part.
The material of air brick 1 is high-purity corundum, mullite, and the material of filling pipe end brick cup ontology 4 uses corundum pouring material.
Filling pipe end internal diameter is 50mm, drawing speed 1.5m/min, casting blank cross-section size are 1235mm × 175mm, are blown
Argon amount is under the process conditions of 5L/min, and the downward mean flow rate of molten steel is 2.752m/min in the mouth of a river, away from filling pipe end cambered surface lower end
At 50mm, mouth of a river near wall transverse rotation flow velocity is 0.61m/s, forms stable annular air curtain in filling pipe end region, realizes
Good removal of inclusions and eddy flow effect.
Embodiment 2
As shown in Figure 4-Figure 6, the embodiment of the present invention 2 discloses a kind of continuous casting production air swirl filling pipe end brick cup,
Including filling pipe end brick cup ontology 4, air brick 1, gas chamber 2 and air inlet pipe 3；The top of the filling pipe end brick cup is equipped with air brick 1,
Air brick 1 is placed in filling pipe end brick cup ontology 4, the air brick 1 is dispersive air brick, fan-shaped including integrally formed top
Permeable portion and lower part annular shape permeable portion, its underpart annular formations play the role of uniform air pressure be connected to gas, fan
Non-breathable gap between shape air brick forms spiral helicine molten steel swirl channel；Ring-shaped air chamber 2 is located at 1 lower part annulus of air brick
Between shape part and filling pipe end brick cup ontology 4, gas chamber 2 is located at ventilative ring bottom and is connected to air brick 1, gas chamber 2 be connected with into
Tracheae 3, one end of air inlet pipe 3 are connected to the side of ring-shaped air chamber 2, the other end from the side of filling pipe end brick cup ontology 4 be pierced by with
External connecting tube is connected.
1 top sector permeable portion of air brick is uniformly distributed by center circular array of the mouth of a river, and the ventilative number of sector is 6
A, 1 top and the bottom internal-and external diameter of air brick is identical, internal diameter 65mm, outer diameter 155mm, and air brick height is 70mm, wherein on
Portion's sector permeable portion height is 50mm；Radius of circle where the arc of each sector permeable portion two sides is 305mm, air brick upper surface
Stretch out filling pipe end brick cup body upper surface 10mm.
Whole gas chamber 2 is in circular ring shape, is integrally formed using can, and the cross section of can is rectangle, and rectangle width is
74mm is highly 20mm.Air inlet pipe 3 uses heat-resistance stainless steel, and specification is in charge of for four, preferably, air inlet pipe 3 is that screw thread connects
It connects.
4 shape of filling pipe end brick cup ontology is rectangular, side length 380mm, is highly 212mm, in filling pipe end brick cup ontology 4
Portion is provided with perforative filling pipe end mounting hole up and down, the cylindrical hole of truncated cone-shaped through-hole and lower part including top, filling pipe end
It is 110mm that diameter is installed on top, and it is 128mm that diameter is installed in lower part.
The material of air brick 1 uses zirconium oxide, corundum, mullite, and the material of filling pipe end brick cup ontology 4 uses corundum, magnesium
Aluminate.
Filling pipe end internal diameter is 50mm, drawing speed 1.5m/min, casting blank cross-section size are 1235mm × 175mm, are blown
Argon amount is under the process conditions of 5L/min, and the downward mean flow rate of molten steel is 2.752m/min in the mouth of a river, away from filling pipe end cambered surface lower end
At 50mm, mouth of a river near wall transverse rotation flow velocity is 0.72m/s, forms stable annular air curtain in filling pipe end region, realizes
Good removal of inclusions and eddy flow effect.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all in essence of the invention
Made any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention within mind and spirit
Within.
Claims (9)
1. a kind of continuous casting production air swirl filling pipe end brick cup, including air brick (1), gas chamber (2), air inlet pipe (3) and upper
Pocket block ontology (4), it is characterised in that: the air brick (1) is located at the top of filling pipe end brick cup, is placed in filling pipe end brick cup sheet
In body (4)；The air brick (1) includes top sector permeable portion and lower part annular shape permeable portion, top sector ventilation part
/ non-breathable gap form spiral helicine molten steel swirl channel, lower part annular shape permeable portion is used for uniform air pressure and company
Ventilation body；The gas chamber (2) is located between air brick (1) lower part annular shape permeable portion and filling pipe end brick cup ontology (4), and with
Air brick (1) connection；The side of one end connection gas chamber (2) of the air inlet pipe (3), the other end is from filling pipe end brick cup ontology (4)
Side be pierced by and be connected with external connecting pipe.
2. a kind of continuous casting production according to claim 1 air swirl filling pipe end brick cup, it is characterised in that: described
The top sector permeable portion of gas brick (1) is uniformly distributed by center circular array of the mouth of a river, in the top and the bottom of air brick (1)
Outer diameter is identical.
3. a kind of continuous casting production according to claim 1 air swirl filling pipe end brick cup, it is characterised in that: described
The top sector permeable portion of gas brick (1) stretches out the upper surface certain altitude of the filling pipe end brick cup ontology (4), for enhancing rotation
Intensity of flow.
4. a kind of continuous casting production according to claim 1 air swirl filling pipe end brick cup, it is characterised in that: described
The type of gas brick (1) includes dispersive air brick, slot-type ventilating brick, straight-through cellular type air brick, complex air-permeable brick.
5. a kind of continuous casting production according to claim 1 air swirl filling pipe end brick cup, it is characterised in that: the gas
Room (2) generally circular ring shape, is integrally formed using can, and the cross section of can is rectangle, width and air brick (1)
Width is suitable.
6. a kind of continuous casting production according to claim 1 air swirl filling pipe end brick cup, it is characterised in that: it is described into
Tracheae (3) is releasable connection, using Heat-Resisting Stainless Steel Tube.
7. a kind of continuous casting production according to claim 6 air swirl filling pipe end brick cup, it is characterised in that: it is described can
It tears open and is connected as being threadedly coupled.
8. a kind of continuous casting production according to claim 1 air swirl filling pipe end brick cup, it is characterised in that: on described
The top of pocket block ontology (4) is located at the position of air brick (1) inner arc side, and there are the non-breathable parts of suitable distance, for protecting
Demonstrate,prove the erosion wear resistance of filling pipe end brick cup；Perforative filling pipe end mounting hole up and down, packet are provided in the middle part of filling pipe end brick cup ontology (4)
Include the rotary table through-hole on top and the cylindrical hole of lower part.
9. a kind of continuous casting production according to any one of claim 1 to 8 air swirl filling pipe end brick cup, feature
Be: the material of the air brick (1) include mullite, corundum, magnesia, zirconium oxide, chromium oxide, silica, organic fiber,
Organic modifiers, aluminous cement；The material of the filling pipe end brick cup ontology (4) includes graphite, mullite, corundum, metallic silicon
Powder, metallic aluminium powder, magnesium aluminate spinel, zirconium oxide, aluminium oxide-carbon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811286126.4A CN109108240B (en) | 2018-10-31 | 2018-10-31 | Pneumatic rotational flow water feeding mouth pocket block for continuous casting tundish |
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| CN201811286126.4A CN109108240B (en) | 2018-10-31 | 2018-10-31 | Pneumatic rotational flow water feeding mouth pocket block for continuous casting tundish |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110666149A (en) * | 2019-10-15 | 2020-01-10 | 北京东南汽车部件有限公司 | Molten aluminum removing device for casting charging barrel pouring port |
| CN111893244A (en) * | 2020-07-30 | 2020-11-06 | 武汉科技大学 | Air brick for bottom blowing of fine argon bubbles for ladle refining |
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| CN104028740A (en) * | 2014-06-18 | 2014-09-10 | 莱芜钢铁集团有限公司 | Upper pocket block for argon blowing of continuous casting tundish and mounting method and application of upper pocket block |
| CN108247033A (en) * | 2018-01-17 | 2018-07-06 | 武汉科技大学 | A kind of continuous casting production eddy flow filling pipe end |
| CN209239047U (en) * | 2018-10-31 | 2019-08-13 | 武汉科技大学 | A kind of continuous casting production air swirl filling pipe end brick cup |
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| WO2011055484A1 (en) * | 2009-11-06 | 2011-05-12 | 住友金属工業株式会社 | Continuous casting method for molten metal |
| CN102781605A (en) * | 2009-11-06 | 2012-11-14 | 住友金属工业株式会社 | Continuous casting method for molten metal |
| CN104028740A (en) * | 2014-06-18 | 2014-09-10 | 莱芜钢铁集团有限公司 | Upper pocket block for argon blowing of continuous casting tundish and mounting method and application of upper pocket block |
| CN108247033A (en) * | 2018-01-17 | 2018-07-06 | 武汉科技大学 | A kind of continuous casting production eddy flow filling pipe end |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110666149A (en) * | 2019-10-15 | 2020-01-10 | 北京东南汽车部件有限公司 | Molten aluminum removing device for casting charging barrel pouring port |
| CN111893244A (en) * | 2020-07-30 | 2020-11-06 | 武汉科技大学 | Air brick for bottom blowing of fine argon bubbles for ladle refining |
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|---|---|
| CN109108240B (en) | 2024-08-02 |
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