CN107755679A - The long nozzle device and argon jetting method of a kind of argon blowing seal and purifying of steel - Google Patents
The long nozzle device and argon jetting method of a kind of argon blowing seal and purifying of steel Download PDFInfo
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- CN107755679A CN107755679A CN201711282961.6A CN201711282961A CN107755679A CN 107755679 A CN107755679 A CN 107755679A CN 201711282961 A CN201711282961 A CN 201711282961A CN 107755679 A CN107755679 A CN 107755679A
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- argon
- long nozzle
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- purifying
- molten steel
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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
- 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
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Abstract
The invention discloses a kind of argon blowing seal and the long nozzle device and argon jetting method of purifying of steel, belong to technical field of ferrous metallurgy.Long nozzle of the present invention is characterised by changing middle part shape, Zhu Liu areas are formed among long nozzle, one circle argon blowing hole is set in Zhu Liu areas simultaneously, the long nozzle of the present invention can realize that molten steel sealing prevents from inhaling nitrogen and Argon stirring degassing function simultaneously, argon gas is blown into by Zhu Liu areas argon blowing hole and Zhu Liu areas are full of argon gas, the gas that gap between long nozzle and ladle delivery port can be kept is malleation, realizing sealing function effectively prevents molten steel air-breathing, also fully contacted with argon gas using molten steel diffusing caused by the mutation of long nozzle caliber, to reach gas purpose in removing steel, it ensure that the degree of purity of molten steel.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, more specifically to the length of a kind of argon blowing seal and purifying of steel
Spout device and argon jetting method.
Background technology
With social economy and the development of science and technology, the performance requirement of steel is increasingly improved.How effectively to prevent and maximum
Degree removal of inclusions is the Main way studied at present to improve Cleanliness of Molten Steel.Can be in terms of two to the cleanliness factor of strand
It is controlled, is on the one hand to remove the field trash in molten steel by various modes as far as possible, is on the other hand to reduce to smelt and pour
The entrance and generation of field trash, particularly molten steel air-breathing problem during note, molten steel air-breathing can bring two harm, a harm
It is secondary oxidation of steel, i.e. the element such as dissolved aluminum in molten steel is oxidized to oxide, and another harm is to cause nitrogen in molten steel
The increase of constituent content.With the horizontal raising of refining techniques, remove inclusion content in melting steel and reached higher level, mesh
Before, prevent the molten steel air-breathing in casting process from becoming more and more important.
Nitrogen is solution strengthening element in steel, phenomena such as causing timeliness and blue shortness, moreover it is possible to the generation such as titanium, aluminium compared with
For sharp field trash；Nitrogen in steel can reduce toughness, plasticity, welding performance of steel etc..Nitrogen content in molten steel is refining
Content is minimum during steel terminal, the nitrogen in molten steel increase mainly after refining and casting process in caused by air-breathing.Cause
This, in order to prevent the air-breathing in casting process, it is necessary to take molding casting to prevent molten steel from inhaling nitrogen.
Deoxidation carries out deoxidation using aluminium more in molten steel, and in order to obtain relatively low dissolved oxygen, general control acid-soluble aluminum content exists
Between 0.025-0.045%, and some high-aluminum steels such as 38CrMoAl acid-soluble aluminum contents are more up to 0.7-1.1%.If pouring
Molten steel air-breathing during note, the dissolved aluminum in molten steel will generate aluminate with the oxygen in air, so as in cast
Cause nozzle blocking, store a series of problems, such as stream.
In order to prevent the air-breathing in Ladle Cycling and casting process from improving Molten Steel Cleanliness, at present in continuous casting production process
In, big bag molding casting is generally realized using big water-coating port and big bag long nozzle argon blowing seal.But seam crossing therebetween
Air easily is sucked because of negative pressure caused by the steel stream of cast, so as to cause the increase of nitrogen content and oxygen content in molten steel.Make
The shortcomings of easily being blocked when being primarily present poor anaphase effect and excessive steel with ventilative ring type argon blowing seal mode, and seal washer is then deposited
Fragile and sealing effectiveness is unstable the shortcomings of.
Have some patent utilization long nozzles at present and carry out Argon to utilize big bag potential energy, such as patent of invention
CN102864283A, patent name are：A kind of Argon-blowing long nozzle for clean steel；This application case is in long nozzle madial wall and lateral wall
Between set a ring-shaped air chamber connected with Argon conduit；Ring-shaped air chamber is toward the direction that radially extends of mouth of a river madial wall, the mouth of a river
The air-vent with ring-shaped air chamber inside multiple connection mouths of a river is further opened with madial wall.This application case argon gas is blown by Argon adapter
Air inlet chamber, argon gas are blown into molten steel in air chamber by each air-vent, and at the mouth of a river, inwall can produce more minute bubbles,
Shearing force caused by the velocity gradient of molten steel flow can smash into minute bubbles more tiny bubble simultaneously.Minute bubbles capture field trash
Float rapidly after into tundish, adsorbed by tundish covering flux, improve the cleannes of strand.Patent of invention
CN104139179A, patent name are：A kind of multi-functional argon blowing long nozzle, this application case it is also proposed that improve argon blowing long nozzle so as to
Preferably carry out argon gas-sealed and produce minute bubbles using big bag potential energy.However, above-mentioned application case is to long nozzle Argon portion
Divide the technological improvement carried out, long nozzle is not improved and innovated.Patent of invention CN102864283A is on long nozzle
End sets step-like funnel, also primarily to long nozzle can be docked preferably with ladle, preferably wraps up ladle, reaches more
Good sealing effectiveness, can not play a part of good dissipation molten steel potential energy.
China Patent No. ZL201621488358.4, authorized announcement date are on July 14th, 2017, and invention and created name is：
A kind of immersion, which is opened to pour, uses ladle long nozzle；The top of this application case long nozzle body is provided with the rim of a bowl, described the rim of a bowl and inner chamber phase
UNICOM, long nozzle body lower end intracavity diameter are more than the intracavity diameter of long nozzle body upper end, and inner chamber is in bell mouth shape.This application
Case expands ladle long nozzle body lower end cavity volume, even if opening has residual air when pouring, expanded by heating pressure very little will not
Impact is formed to sealing between long nozzle and ladle outlet, the sealing leak between long nozzle and ladle outlet is avoided, improves to open and pour
Quality.But the bell-mouth structure of air that this application case relies primarily on the setting of long nozzle body lower end avoids the formation of impact, and molten steel is passing through
The last moment of long nozzle could further scatter, and dissipation molten steel potential energy is more passive, and effect is undesirable；And in order to do not produce compared with
Big impact depth, lower end bell-mouth structure of air sectional area can design larger, long nozzle existing defects in structure design.
The content of the invention
1. invention technical problems to be solved
The problem of present invention proposes for background technology, there is provided the long nozzle dress of a kind of argon blowing seal and purifying of steel
Put and argon jetting method, the present invention in the middle part of long nozzle mainly by setting Zhu Liu area's dissipation molten steel potential energy, and blown in the area
Enter argon gas, argon gas rises to the argon gas atmosphere that seal area forms pressure-fired, effectively prevents molten steel air-breathing；Consumed using Zhu Liu areas molten steel
Argon gas is broken into minute bubbles by scattered kinetic energy, and is carried along into tundish by molten steel with further removal of inclusions；Long nozzle goes out
Mouthful it is in bell mouth shape, further dissipation molten steel potential energy is to mitigate the impact to Metal in Tundish.
2. technical scheme
To reach above-mentioned purpose, technical scheme provided by the invention is：
The long nozzle device of a kind of argon blowing seal and purifying of steel of the present invention, including long nozzle body, the long nozzle
Body interior is provided with hollow cavity, and intracavity diameter is more than both ends intracavity diameter in the middle part of long nozzle body, forms Zhu Liu areas.
As further improvement of the present invention, described long nozzle body one end sets the rim of a bowl, the rim of a bowl docking ladle
Delivery port, and seal washer is set between the rim of a bowl and ladle delivery port.
As further improvement of the present invention, described Zhu Liu areas are provided with Argon in one end side wall of the rim of a bowl
Hole, Argon conduit connection argon blowing hole, argon gas are blown into long nozzle Zhu Liu areas by Argon conduit.
As further improvement of the present invention, described Argon conduit is provided at circumferentially spaced 4-6 along Zhu Liu areas side wall.
As further improvement of the present invention, in described Zhu Liu areas side wall, distance Zhu Liu areas and upper end long nozzle sheet
The Argon conduit that an at least row is uniformly distributed circumferentially is provided with the position 30cm of body boundary, often row sets 4-6 Argon conduit.
As further improvement of the present invention, described Zhu Liu areas intracavity diameter is both ends long nozzle chamber body diameter
1.3-1.8 times.
As further improvement of the present invention, described Zhu Liu areas are arranged at the 140-170cm of the rim of a bowl bottom.
As further improvement of the present invention, described long nozzle body outlet 10cm sections set horn mouth, the loudspeaker
1.4-1.6 times of the intraoral a diameter of long nozzle chamber body diameter of chamber.
The method that a kind of long nozzle device described in of the present invention carries out Argon, first opens ladle delivery port,
After confirmation ladle delivery port can be opened, ladle delivery port is closed, then the rim of a bowl of long nozzle body is docked with ladle delivery port,
By Argon conduit to Zhu Liu areas Argon, then second of opening ladle delivery port, which is opened, pours molten steel.
As further improvement of the present invention, after second is opened ladle delivery port, the argon flow amount being blown into is 30-
60L/h, Argon pressure are 0.1-2Mpa.
3. beneficial effect
Using technical scheme provided by the invention, compared with existing known technology, there is following remarkable result：
(1) the long nozzle device of a kind of argon blowing seal and purifying of steel of the invention, by improving traditional long nozzle structure,
Set intracavity diameter to be more than the Zhu Liu areas of long nozzle both ends intracavity diameter in the middle part of long nozzle body so that molten steel in ladle with
Step-wise manner enters the tundish of lower section, and molten steel potential energy is fully dissipated in long nozzle Zhu Liu areas, effectively alleviates molten steel
Impact to tundish；
(2) the long nozzle device of a kind of argon blowing seal and purifying of steel of the invention, blown using Zhu Liu areas in the middle part of long nozzle
Entering argon gas and storing for argon gas is formed in Zhu Liu areas, Zhu Liu areas formation argon gas atmosphere, which seals long nozzle, prevents molten steel from inhaling nitrogen, with
This is simultaneously as the Zhu Liu areas at middle part cause the impact of molten steel to be entered after part argon gas is impacted into small Argon Bubble by molten steel winding
In tundish, it ensure that the degree of purity of molten steel while improving the ability of tundish removal of inclusions；
(3) the long nozzle device of a kind of argon blowing seal and purifying of steel of the invention, has done necessarily in the long nozzle port of export
Improved shape, that is, it is in bell mouth shape to design long nozzle outlet, and horn mouth intracavity diameter is only long nozzle chamber body diameter
1.4-1.6 times, designed relative to traditional typhon mouth, one aspect of the present invention is on the premise of the existing Zhu Liu areas in front end, energy
The long nozzle port of export further dissipation molten steel potential energy to mitigate the impact to Metal in Tundish；Another aspect horn mouth area compared with
It is small so that long nozzle more optimized structure；
(4) the long nozzle device of a kind of argon blowing seal and purifying of steel of the invention, is not only directly set Argon conduit
Multiple Argon conduits are circumferentially uniformly distributed in Zhu Liu areas, and along Zhu Liu areas side wall, the design of Argon conduit symmetric radiation shape is multiple, easily
In forming the uniform atmosphere of argon gas, it is easy to seal；Qie Zhuliu areas inner chamber is thicker, has also given argon gas more spaces, and molten steel enters storage
Area is flowed, argon gas in time uniformly can protect molten steel, and molten steel potential energy is also more convenient for when Zhu Liu areas dissipate will be neighbouring
Argon gas suction breaks up to form minute bubbles and enter tundish with molten steel；
(5) method that a kind of long nozzle device described in of the invention carries out Argon, coordinates the structure of long nozzle to change
Enter, design molten steel just it is normally opened pour during, the argon flow amount that is blown into is 30-60L/h, and Argon pressure is 0.1-2Mpa, the condition
Lower argon gas rises to the argon gas atmosphere that seal area forms pressure-fired, can effectively prevent molten steel air-breathing, and Qie Zhuliu areas molten steel dissipates
Kinetic energy fully argon gas can be smashed, formed minute bubbles, into tundish with further removal of inclusions, ensure the clean of molten steel
Cleanliness.
Brief description of the drawings
Fig. 1 is the argon blowing seal of the present invention and the long nozzle structural representation of purifying of steel.
Label declaration in schematic diagram：
1st, ladle delivery port；2nd, seal washer；3rd, long nozzle body；4th, Argon conduit；5th, Zhu Liu areas；6th, horn mouth.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1, the long nozzle device of a kind of argon blowing seal and purifying of steel of the present embodiment, ladle and centre are arranged on
Wrap junction.Long nozzle body 3 protrudes to be middle, and lower end outlet is in horn-like diameter-changing body, the specially upper end of long nozzle body 3
For funnel-form the rim of a bowl, the rim of a bowl docking ladle delivery port 1, and setting seal washer 2 between the rim of a bowl and ladle delivery port 1.Long water
The inside of mouth body 3 is provided with hollow cavity, and the present embodiment is setting Zhu Liu areas 5, the inner chamber of Zhu Liu areas 5 at the 150cm of the rim of a bowl bottom
Diameter is more than the intracavity diameter of both ends long nozzle body 3.The main function in Zhu Liu areas 5 is so that molten steel in ladle with ladder side
Formula enters the tundish of lower section, and molten steel potential energy is fully dissipated in Zhu Liu areas 5, to mitigate impact of the molten steel to tundish.Together
When, storing for argon gas is formed in Zhu Liu areas, forming argon gas atmosphere sealing long nozzle prevents molten steel from inhaling nitrogen.Inventor passes through long-term
Theoretical research, and the practice summary in steel mill, it is believed that it is the intracavity diameter of both ends long nozzle body 3 to set the intracavity diameter of Zhu Liu areas 5
1.3-1.8 times it is proper, specific to the intracavity diameter of the present embodiment Zhu Liu areas 5 for the intracavity diameter of both ends long nozzle body 3
1.5 again.
The present embodiment is set in the side wall of Zhu Liu areas 5 at the distance Zhu Liu areas 5 and boundary position 30cm of upper end long nozzle body 3
Argon blowing hole is put, Argon conduit 4 is directly connected to argon blowing hole, and Argon conduit 4 is provided at circumferentially spaced 4 along the side wall of Zhu Liu areas 5, argon gas
Long nozzle Zhu Liu areas 5 are blown into by Argon conduit 4.The symmetric radiation shape of Argon conduit 4 designs 4, is easily formed the uniform gas of argon gas
Atmosphere, it is easy to seal.
What deserves to be explained is the raising for Molten Steel Cleanliness, except preventing extraneous gas entrance forms oxide from also needing
Remove the deoxidation products after tapping.According to existing theory, it is simple and effective to capture field trash and removal of floating by bubble
Means.Meanwhile relevant research shows：The bubble of effective removal of inclusions should be tiny bubble, and optimum range is in 2-15mm.The back of the body
The patent of invention CN102864283A mentioned in scape technology, patent name are：A kind of Argon-blowing long nozzle for clean steel；I.e. using big
Air pocket is smashed into minute bubbles by shearing force caused by the potential energy of Baogang's water, forms the more preferable removal of inclusions of tiny bubble.
Though Argon conduit 4 is directly arranged on Zhu Liu areas 5 by the present embodiment also with above-mentioned theory, the present embodiment, by
Inner chamber is thicker at Zhu Liu areas 5, has given argon gas more spaces.One is easily formed argon gas atmosphere, is easy to seal；Two carry out molten steel
Into Zhu Liu areas 5, argon gas in time uniformly can protect molten steel, then have molten steel potential energy when Zhu Liu areas 5 dissipate also more
It is easy to, by neighbouring argon gas suction, fully break up to form tiny bubble and enter tundish with molten steel, improve tundish removal
The ability of field trash.And in terms of argon blowing seal, traditional Argon is all that argon blowing hole is arranged on into long nozzle upper end, against parcel steel
Argon is carried out at bag delivery port 1, it is fewer so to leave the space of Argon for, cause interface sealing effectiveness be not it is fine, not
It can effectively prevent molten steel from inhaling nitrogen.And the argon gas that the present embodiment Zhu Liu areas 5 take in is more, there is smaller pressure can be by argon gas top to steel
At bag delivery port 1, even preferably sealing effectiveness can be reached as traditional Argon mode.
Described long nozzle body 3 exports 10cm sections and sets horn mouth 6, and the top intracavity diameter of horn mouth 6 is long water
1.4 times of the mouth intracavity diameter of body 3, bottom intracavity diameter are 1.6 times of the intracavity diameter of long nozzle body 3.The present embodiment leads to
Cross and improve traditional long nozzle structure, Zhu Liu areas 5 are set in the middle part of long nozzle body so that the molten steel in ladle enters in a step-wise manner
Enter the tundish of lower section, molten steel potential energy is fully dissipated in long nozzle Zhu Liu areas, effectively alleviates molten steel to tundish
Impact, middle buffer distance can also be adjusted according to actual conditions, the more flexible also more active of the dissipation to potential energy.Relatively
The mode of typhon mouth is separately provided in long nozzle lower end in tradition, can be on the one hand on the premise of the existing Zhu Liu areas 5 in front end
The long nozzle port of export further dissipation molten steel potential energy to mitigate the impact to Metal in Tundish；The loudspeaker of another aspect the present embodiment
Open area is smaller, and impact depth is smaller, when early stage, molten steel depth ratio was shallower, will not be flushed to refractory material, and slag blanket is not yet
Easily it is involved in molten steel.
The present embodiment have also been devised a kind of long nozzle device described in and blown to coordinate the structure of long nozzle to improve
The method of argon, detailed process are：Ladle delivery port 1 is opened first, after confirming that ladle delivery port 1 can be opened, by ladle water outlet
Mouthful 1 is closed, then the rim of a bowl of long nozzle body 3 is docked with ladle delivery port 1, by Argon conduit 4 to the Argon of Zhu Liu areas 5, so
Second of opening ladle delivery port 1, which is opened, afterwards pours molten steel, now controls the argon flow amount being blown into the range of 30-40L/h, Argon pressure
Power is in the range of 0.1-1Mpa.Argon gas rises to the argon gas atmosphere that seal area forms pressure-fired under the conditions of this, can effectively prevent
Molten steel air-breathing, the kinetic energy that Qie Zhuliu areas molten steel dissipates fully can smash argon gas, form minute bubbles, into tundish to enter one
Removal of inclusions is walked, ensures the cleanliness factor of molten steel.
Embodiment 2
The long nozzle device of a kind of argon blowing seal and purifying of steel of the present embodiment, substantially with embodiment 1, its difference
It is：The present embodiment is setting Zhu Liu areas 5 at long water gap bowl mouth bottom 140cm, and the intracavity diameter of Zhu Liu areas 5 is both ends Chang Shui
1.3 times of the mouth intracavity diameter of body 3.In the side wall of Zhu Liu areas 5, the distance Zhu Liu areas 5 and boundary position 30cm of upper end long nozzle body 3
Place is provided with the Argon conduit that two rows are uniformly distributed circumferentially, and often row sets 6 Argon conduits.And in order to coordinate the structure of long nozzle
Improve, the present embodiment controls the argon flow amount being blown into the range of 50-60L/h, Argon after second is opened ladle delivery port
Pressure is in the range of 0.5-1.5Mpa.
Embodiment 3
The long nozzle device of a kind of argon blowing seal and purifying of steel of the present embodiment, substantially with embodiment 1, its difference
It is：The present embodiment is setting Zhu Liu areas 5 at long water gap bowl mouth bottom 170cm, and the intracavity diameter of Zhu Liu areas 5 is both ends Chang Shui
1.8 times of the mouth intracavity diameter of body 3.In the side wall of Zhu Liu areas 5, the distance Zhu Liu areas 5 and boundary position 30cm of upper end long nozzle body 3
Place is provided with the Argon conduit that two rows are uniformly distributed circumferentially, and often row sets 5 Argon conduits.And in order to coordinate the structure of long nozzle
Improve, the present embodiment controls the argon flow amount being blown into the range of 40-50L/h, Argon after second is opened ladle delivery port
Pressure is in the range of 1-2Mpa.
Schematically the present invention and embodiments thereof are described above, this describes no restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So if common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, without designing and the technical scheme for creativeness
Similar frame mode and embodiment, protection scope of the present invention all should be belonged to.
Claims (10)
1. the long nozzle device of a kind of argon blowing seal and purifying of steel, including long nozzle body (3), the long nozzle body (3)
Inside is provided with hollow cavity, it is characterised in that：Intracavity diameter is more than both ends intracavity diameter in the middle part of long nozzle body (3), forms storage
Flow area (5).
2. the long nozzle device of a kind of argon blowing seal according to claim 1 and purifying of steel, it is characterised in that：Described
Long nozzle body (3) one end sets the rim of a bowl, the rim of a bowl docking ladle delivery port (1), and is set between the rim of a bowl and ladle delivery port (1)
Put seal washer (2).
3. the long nozzle device of a kind of argon blowing seal according to claim 2 and purifying of steel, it is characterised in that：Described
Zhu Liu areas (5) are provided with argon blowing hole, Argon conduit (4) connection argon blowing hole in one end side wall of the rim of a bowl, and argon gas passes through Argon
Conduit (4) is blown into long nozzle Zhu Liu areas (5).
4. the long nozzle device of a kind of argon blowing seal according to claim 3 and purifying of steel, it is characterised in that：Described
Argon conduit (4) is provided at circumferentially spaced 4-6 along Zhu Liu areas (5) side wall.
5. the long nozzle device of a kind of argon blowing seal according to claim 3 and purifying of steel, it is characterised in that：Described
In Zhu Liu areas (5) side wall, distance Zhu Liu areas (5) at upper end long nozzle body (3) boundary position 30cm with being provided with an at least row edge
Circumferential equally distributed Argon conduit (4), 4-6 Argon conduit (4) of often row's setting.
6. the long nozzle device of a kind of argon blowing seal and purifying of steel according to claim any one of 1-5, its feature exist
In：Described Zhu Liu areas (5) intracavity diameter is 1.3-1.8 times of both ends long nozzle body (3) intracavity diameter.
7. the long nozzle device of a kind of argon blowing seal according to claim 6 and purifying of steel, it is characterised in that：Described
Zhu Liu areas (5) are arranged at the 140-170cm of the rim of a bowl bottom.
8. the long nozzle device of a kind of argon blowing seal according to claim 6 and purifying of steel, it is characterised in that：Described
Long nozzle body (3) outlet 10cm sections set horn mouth (6), and horn mouth (6) intracavity diameter is that long nozzle body (3) inner chamber is straight
1.4-1.6 times of footpath.
9. a kind of method that long nozzle device using described in claim 1-8 carries out Argon, it is characterised in that：First by ladle
Delivery port (1) is opened, after confirming that ladle delivery port (1) can be opened, by ladle delivery port (1) closing, then by long nozzle body (3)
The rim of a bowl docked with ladle delivery port (1), by Argon conduit (4) to Zhu Liu areas (5) Argon, then open ladle second and go out
The mouth of a river (1), which is opened, pours molten steel.
A kind of 10. method that Argon is carried out using long nozzle device according to claim 9, it is characterised in that：Second
After opening ladle delivery port (1), the argon flow amount being blown into is 30-60L/h, and Argon pressure is 0.1-2Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282961.6A CN107755679B (en) | 2017-12-07 | 2017-12-07 | Argon blowing sealing and molten steel cleaning long nozzle device and argon blowing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282961.6A CN107755679B (en) | 2017-12-07 | 2017-12-07 | Argon blowing sealing and molten steel cleaning long nozzle device and argon blowing method |
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| CN107755679A true CN107755679A (en) | 2018-03-06 |
| CN107755679B CN107755679B (en) | 2023-09-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927511A (en) * | 2018-09-28 | 2018-12-04 | 北京科技大学 | A kind of long nozzle preventing outlet flow deflection |
| CN116745047A (en) * | 2021-04-15 | 2023-09-12 | 品川耐火材料株式会社 | Immersion nozzle for continuous casting |
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| CN203664656U (en) * | 2013-09-12 | 2014-06-25 | 北京科技大学 | Consumption type steel ladle long nozzle |
| CN104226973A (en) * | 2014-08-20 | 2014-12-24 | 马钢(集团)控股有限公司 | Continuous casting protection casting device of high-quality steel |
| CN204818038U (en) * | 2015-06-30 | 2015-12-02 | 新疆八一钢铁股份有限公司 | Seal structure at long mouth of a river of modified ladle |
| CN206326126U (en) * | 2016-12-30 | 2017-07-14 | 维苏威高级陶瓷(中国)有限公司 | A kind of immersion, which is opened to pour, uses ladle long nozzle |
| CN207521700U (en) * | 2017-12-07 | 2018-06-22 | 安徽工业大学 | A kind of long nozzle device of argon blowing seal and purifying of steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108927511A (en) * | 2018-09-28 | 2018-12-04 | 北京科技大学 | A kind of long nozzle preventing outlet flow deflection |
| CN116745047A (en) * | 2021-04-15 | 2023-09-12 | 品川耐火材料株式会社 | Immersion nozzle for continuous casting |
| CN116745047B (en) * | 2021-04-15 | 2024-03-22 | 品川耐火材料株式会社 | Immersion nozzle for continuous casting |
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