CN114888270A - Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method - Google Patents
Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method Download PDFInfo
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- CN114888270A CN114888270A CN202210502548.0A CN202210502548A CN114888270A CN 114888270 A CN114888270 A CN 114888270A CN 202210502548 A CN202210502548 A CN 202210502548A CN 114888270 A CN114888270 A CN 114888270A
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- 230000001629 suppression Effects 0.000 title claims abstract description 84
- 230000002441 reversible effect Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000009749 continuous casting Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000002893 slag Substances 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 230000002829 reductive effect Effects 0.000 claims abstract description 8
- 230000004907 flux Effects 0.000 claims description 7
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 208000029154 Narrow face Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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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
- B22D11/16—Controlling or regulating processes or operations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method, which comprises the following steps of: the method comprises the following steps: a wave suppression plate is suspended below the tundish through a hanger and inserted below the liquid level of the molten steel; step two: the wave suppression plate is provided with a plurality of reverse inclined holes in the direction opposite to the flowing direction of the molten steel, the flowing of the molten steel is suppressed through the reverse inclined holes, and the impact of the molten steel on the protective slag is reduced; secondly, the position of the wave suppression plate in the crystallizer and the depth of the wave suppression plate immersed in the liquid level of molten steel are adjusted through a hanger below the tundish and a steel structure on the wave suppression plate; the reverse inclined holes in the wave suppression plate ensure that molten steel flows through the reverse inclined holes, enough heat is provided for melting of the covering slag, the molten steel cannot directly impact the covering slag due to the angle direction, and the liquid level fluctuation is effectively reduced due to the buffer effect of the reverse inclined holes.
Description
Technical Field
The invention relates to the technical field of metallurgical continuous casting equipment, in particular to a slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method.
Background
The production efficiency is improved by improving the casting blank drawing speed of the continuous casting machine, and the production cost is further reduced, so that the casting blank drawing speed is effectively improved, the molten steel flux is inevitably increased after the casting blank drawing speed is improved, the impact of molten steel flow strands in a crystallizer is increased, the liquid level flow rate and the fluctuation are aggravated, and the casting powder is involved in the molten steel to form the surface defect in serious cases.
In the prior art, four types of technologies are mainly used for solving the problem of liquid level fluctuation under high pulling speed;
the first type is a submerged nozzle with a flat structure for continuous thin slab casting, which is obtained by optimizing the structure of the nozzle, in the prior art, for example, the patent application number is CN 200720012995.9;
the method has the following defects: the biggest defect of the porous mode is that the pores have small diameters, are easy to flocculate and block, cause bias flow and are not beneficial to liquid level control;
the second type is to add a magnetic field in the crystallizer and suppress the fluctuation of the liquid level by means of electromagnetic setting, in the prior art, for example, a method and a device for continuous casting of metal with patent application number CN 200510125020.2;
and (3) defect: the method only can play a certain role in inhibiting the steel flow with uneven speed at the outlet of the water gap, and control the local speed to be too high, but when the steel flux reaches a certain degree, the liquid level flow speed is integrally increased, the slag entrapment risk still exists, and the method has large modification amount and high investment;
the third type relies on methods such as control, detection, calculation and the like to realize real-time monitoring of the liquid level, in the prior art, for example, a steady-state casting process method which inhibits the fluctuation of the liquid level of a continuous casting crystallizer and has the patent application number of CN 201911292996.7;
the method has the following defects: the method can only early warn and detect the fluctuation of the liquid level and cannot solve the problem of the fluctuation of the liquid level under high pulling speed and large steel passing amount;
in the fourth category, a new mechanism is additionally arranged in the crystallizer to realize the reduction of the liquid level fluctuation, and in the prior art, for example, a system for inhibiting the liquid level fluctuation of the crystallizer at a lifting high pulling speed with the patent application number of CN 201510240031.9;
the method has the following defects: under the condition of continuous casting working conditions, no material can meet the requirements of performance, structure and cost under the actions of severe temperature, scouring and mixed flocculation.
Aiming at the characteristics and the limitations of the prior art, the continuous casting slab high-pulling-speed reverse inclined hole type wave suppression method is provided, so that the molten steel liquid level in a crystallizer is still stable under the high-pulling-speed condition, and the fluctuation is in a reasonable range.
Disclosure of Invention
The invention aims to provide a high-pulling-speed reverse inclined hole type wave suppression method for slab continuous casting, which comprises the following steps of firstly, suspending a wave suppression plate under a tundish, arranging steel structure in the wave suppression plate, and wrapping refractory materials outside the wave suppression plate; secondly, the position of the wave suppression plate in the crystallizer and the depth of the wave suppression plate immersed in the liquid level of molten steel are adjusted through a hanger below the tundish and a steel structure on the wave suppression plate; the reverse inclined holes in the wave suppression plate ensure that molten steel flows through the reverse inclined holes, enough heat is provided for melting of the covering slag, the molten steel cannot directly impact the covering slag due to the angle direction, and the liquid level fluctuation is effectively reduced due to the buffer effect of the reverse inclined holes.
The purpose of the invention can be realized by the following technical scheme:
a slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method comprises the following steps:
the method comprises the following steps: a wave suppression plate is suspended below the tundish through a hanger and inserted below the liquid level of the molten steel;
step two: a plurality of reverse inclined holes in the direction opposite to the flowing direction of the molten steel are formed in the wave suppression plate, the flowing of the molten steel is suppressed through the reverse inclined holes, and the impact of the molten steel on the protective slag is reduced.
As a further scheme of the invention: in the first step, the depth of the wave suppression plate inserted into the liquid level of the molten steel is 20-100 mm.
As a further scheme of the invention: in the second step, the included angle between the reverse inclined hole on the wave suppression plate and the horizontal direction is 30-70 degrees.
As a further scheme of the invention: the reverse inclined holes can be circular holes or reverse transverse long strip-shaped gaps or reverse vertical long strip-shaped gaps.
As a further scheme of the invention: when the reverse inclined holes are circular holes, the diameters of the reverse inclined holes are 10-40 mm.
As a further scheme of the invention: when the reverse inclined hole is a reverse transverse long strip-shaped gap or a reverse vertical long strip-shaped gap, the reverse transverse long strip-shaped gap or the reverse vertical long strip-shaped gap is 10-30 mm.
As a further scheme of the invention: the total area of the reversely inclined holes accounts for 10-40% of the total area of the wave suppression plate.
As a further scheme of the invention: the hanger is fixedly arranged below the tundish, and the submerged nozzle at the bottom of the tundish penetrates through the hanger and extends into molten steel in the crystallizer;
the hanger bottom surface both sides sliding connection has the slip module, the last support arm that can dismantle of slip module is connected with, the bottom of support arm is connected with wave suppression board through the steel structure protective sheath, set up the anti-inclined hole of a plurality of and the opposite direction of molten steel flow on the wave suppression board.
As a further scheme of the invention: the crystallizer is internally provided with covering slag, and the wave suppression plate penetrates through the covering slag in the crystallizer.
As a further scheme of the invention: the included angle between the angle direction of the reverse inclined hole and the backflow direction of the molten steel is smaller than 90 degrees.
The invention has the beneficial effects that: according to the invention, the wave suppression plate is suspended under the tundish, a steel structure is arranged in the wave suppression plate, and a refractory material is coated outside the wave suppression plate; secondly, the position of the wave suppression plate in the crystallizer and the depth of the wave suppression plate immersed in the liquid level of molten steel are adjusted through a hanger below the tundish and a steel structure on the wave suppression plate; the anti-inclined holes on the wave suppression plate ensure that the molten steel flows through to provide enough heat for melting the covering slag, the angle direction also ensures that the molten steel cannot directly impact the covering slag, the buffer action effectively reduces the fluctuation of the liquid level, most of the kinetic energy of the molten steel is consumed below the wave suppression plate, and a small part of the kinetic energy of the molten steel can pass through and melt the covering slag, so that the aim of stabilizing the fluctuation of the liquid level is fulfilled.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a front view of the present invention;
FIG. 2 is a schematic structural view of a cross-sectional view A-A of the present invention.
In the figure: 1. an immersion nozzle; 2. a hanger; 3. a sliding module; 4. positioning pins; 5. a support arm; 6. a steel structure protective sleeve; 7. a reverse inclined hole; 8. covering slag; 9. a wave suppression plate; 10. molten steel; 11. a crystallizer; 12. and (4) pouring a middle bag.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention relates to a method for suppressing wave in a slab continuous casting with a reverse inclined hole at a high drawing speed, comprising the following steps:
the method comprises the following steps: a wave suppression plate 9 is suspended below the tundish 12 through a hanger 2, and the wave suppression plate 9 is inserted below the liquid level of the molten steel 10;
wherein, the wave suppression plate 9 can move in the vertical direction and the horizontal direction through the hanger 2;
step two: the wave suppression plate 9 is provided with a plurality of reverse inclined holes 7 in the direction opposite to the flowing direction of the molten steel, so that the flowing of the molten steel 10 is suppressed, and the impact of the molten steel 10 on the casting powder 8 is reduced.
In the first step, the depth of the wave suppression plate 9 inserted into the liquid level of the molten steel 10 is 20-100 mm;
in the second step, an included angle of 30-70 degrees is formed between the reverse inclined hole 7 on the wave suppression plate 9 and the horizontal direction;
wherein, the reverse inclined hole 7 can be a circular hole, a reverse transverse long strip-shaped gap or a reverse vertical long strip-shaped gap, and the total area of the reverse inclined hole when the reverse inclined hole is the circular hole, the reverse transverse long strip-shaped gap or the reverse vertical long strip-shaped gap accounts for 10-40% of the total area of the wave suppression plate 9;
specifically, the method comprises the following steps:
when the reverse inclined hole 7 is a circular hole, the diameter of the reverse inclined hole 7 is 10-40 mm;
when the reverse inclined hole is a reverse transverse long strip-shaped or reverse vertical long strip-shaped gap, the reverse transverse long strip-shaped or reverse vertical long strip-shaped gap is 10-30 mm.
As shown in fig. 1, a hanger 2 is fixedly arranged below a tundish 12, a submerged nozzle 1 at the bottom of the tundish 12 is arranged to penetrate through the hanger 2, and sliding modules 3 are arranged at two ends of the bottom surface of the hanger 2;
a notch for sliding the sliding module 3 is formed in the bottom surface of the hanger 2, and the sliding module 3 is connected to the bottom surface of the hanger 2 in a sliding manner, so that the sliding module 3 can move on the hanger 2 along the horizontal direction;
the support arm 5 is detachably connected to the sliding module 3, the upper end of the support arm 5 penetrates through the sliding module 3 and is connected to the sliding module 3 in a sliding mode, a positioning hole is formed in the front face of the sliding module 3, the support arm 5 penetrates through the sliding module 3, and the support arm 5 is locked and fixed on the sliding module 3 through inserting a positioning pin 4 into the positioning hole in the front face of the sliding module 3;
wherein, the supporting arm 5 is provided with a limit hole matched with the positioning pin 4; the hanger 2 is provided with a hole slot for the supporting arm 5 to slide in the vertical direction;
the lower end of the supporting arm 5 is connected with a steel structure protective sleeve 6, the bottom of the steel structure protective sleeve 6 is fixedly connected with a wave suppression plate 9, a plurality of reverse inclined holes 7 in the direction opposite to the flowing direction of molten steel 10 are formed in the wave suppression plate 9, and the wave suppression plate 9 penetrates through the protective slag 8 and is arranged inside the crystallizer 11;
wherein, the included angle between the angle direction of the reverse inclined hole 7 and the backflow direction of the molten steel 10 is less than 90 degrees;
when the device is used specifically, the hanger 2 is fixed at the bottom of the tundish 12 along the center line of the submerged nozzle 1, the support arm 5 is fixed on the sliding module 3 by using the positioning hole and the positioning pin 4, the depth of the wave suppression plate 9 inserted into molten steel 10 is adjusted by adjusting the distance of the support arm 5 penetrating through the sliding module 3, and meanwhile, the sliding module 3 on the hanger 2 is used for adjusting the position of the wave suppression plate 9 in the crystallizer 11 in the horizontal direction, so that the distance between the wave suppression plate 9 and the inner wall of the crystallizer 11 is controlled, the steel-structure protective sleeve 6 plays a role of protecting the support arm 5 from deformation, and in the continuous casting process, the molten steel 10 in the crystallizer 11 slowly flows onto the wave suppression plate 9 through the anti-inclined hole 7 and the gap between the wave suppression plate 9 and the inner wall of the crystallizer 11, so as to provide heat for melting the protective slag 8;
because the molten steel 10 is rushed out from the submerged nozzle 1 and collides with the inner wall of the crystallizer 11 to form a backflow, the included angle between the angle direction of the reverse inclined hole 7 and the backflow direction of the molten steel is set to be less than 90 degrees, so that the direct impact of the molten steel 10 on the protective slag 8 is avoided, and the fluctuation of the liquid level is reduced.
In one particular embodiment:
(1) the supporting arm 5 penetrates through the sliding module 3, the supporting arm 5 is fixed by using a positioning hole and a positioning pin 4 in the vertical direction, and the wave suppression plate 9 is adjusted to be inserted 20mm below the liquid level of the molten steel 10;
(2) the sliding module 3 moves on the hanger 2 along the horizontal direction to control the gap between the edge of the wave suppression plate 9 and the inner wall of the narrow surface of the crystallizer 11 to be 20-30 mm;
(3) controlling the gap between the edge of the wave suppression plate 9 and the inner wall of the wide surface of the crystallizer 11 to be 20mm and the gap between the edge of the wave suppression plate 9 and the inner wall of the submerged nozzle 1 to be 30-50mm through the length and width of the wave suppression plate 9;
(4) the diameter of the reverse inclined hole 7 on the wave suppression plate 9 is 20mm, an included angle of 40 degrees is formed between the diameter and the horizontal direction, and the total area of the reverse inclined hole accounts for 20% of the total area of the wave suppression plate.
The invention can realize that the fluctuation of the liquid level is less than or equal to +/-3 mm when the steel flux is 5.5-5.8 t/min.
In one particular embodiment:
(1) the supporting arm 5 penetrates through the sliding module 3, the supporting arm 5 is fixed by using a positioning hole and a positioning pin 4 in the vertical direction, and the wave suppression plate 9 is adjusted to be inserted 30mm below the liquid level of the molten steel 10;
(2) the sliding module 3 moves on the hanger 2 along the horizontal direction to control the gap between the edge of the wave suppression plate 9 and the inner wall of the narrow face of the crystallizer 11 to be 20-30 mm;
(3) controlling the gap between the edge of the wave suppression plate 9 and the inner wall of the wide surface of the crystallizer 11 to be 30mm and the gap between the edge of the wave suppression plate 9 and the inner wall of the submerged nozzle 1 to be 50-70mm through the length and width of the wave suppression plate 9;
(4) the reverse transverse long strip-shaped gap 10mm on the wave suppression plate 9 forms an included angle of 50 degrees with the horizontal direction, and the total area of the reverse transverse long strip-shaped gap accounts for 30 percent of the total area of the wave suppression plate.
By applying the invention, the fluctuation of the liquid level is less than or equal to +/-4 mm when the steel flux is 5.0-5.5 t/min.
In one particular embodiment:
(1) the supporting arm 5 penetrates through the sliding module 3, the supporting arm 5 is fixed by using a positioning hole and a positioning pin 4 in the vertical direction, and the wave suppression plate 9 is adjusted to be inserted 40mm below the liquid level of the molten steel 10;
(2) the sliding module 3 moves on the hanger 2 along the horizontal direction to control the gap between the edge of the wave suppression plate 9 and the inner wall of the narrow face of the crystallizer 11 to be 30-40 mm;
(3) controlling the gap between the edge of the wave suppression plate 9 and the inner wall of the wide surface of the crystallizer 11 to be 35mm and the gap between the edge of the wave suppression plate 9 and the inner wall of the submerged nozzle 1 to be 60-80mm through the length and width of the wave suppression plate 9;
(4) the reverse vertical strip-shaped gap 15mm on the wave suppression plate 9 forms an included angle of 60 degrees with the horizontal direction, and the total area of the reverse vertical strip-shaped gap accounts for 35 percent of the total area of the wave suppression plate.
By applying the invention, the fluctuation of the liquid level is less than or equal to +/-4 mm when the steel flux is 5.3-5.6 t/min.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. A slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method is characterized by comprising the following steps:
the method comprises the following steps: the wave suppression plate (9) is suspended below the tundish (12) through the hanger (2), and the wave suppression plate (9) is inserted below the liquid level of the molten steel (10);
step two: a plurality of anti-inclined holes (7) in the direction opposite to the flowing direction of the molten steel (10) are formed in the wave suppression plate (9), the flowing of the molten steel (10) is suppressed through the anti-inclined holes (7), and the impact of the molten steel (10) on the protective slag (8) is reduced.
2. The method for suppressing waves of a slab continuous casting reverse inclined hole type as claimed in claim 1, wherein in the step one, the wave suppressing plate (9) is inserted to a depth of 20-100mm from the liquid level of the molten steel (10).
3. A method for suppressing waves at high pulling speed and reverse inclined hole type for continuous casting of plate blank as claimed in claim 1, wherein in step two, the angle between the reverse inclined hole (7) of the wave suppressing plate (9) and the horizontal direction is 30-70 °.
4. A high-pulling-speed reverse-inclined hole type wave suppression method for slab continuous casting according to claim 1, characterized in that the reverse-inclined hole (7) can be a circular hole or a reverse transverse long strip-shaped gap or a reverse vertical long strip-shaped gap.
5. A method for suppressing waves in a high drawing speed reverse inclined hole of a slab continuous casting according to claim 4, characterized in that when the reverse inclined hole (7) is a circular hole, the diameter of the reverse inclined hole (7) is 10-40 mm.
6. The high-pulling-speed reverse-inclined hole type wave suppression method for slab continuous casting according to claim 4, characterized in that when the reverse-inclined hole (7) is a reverse-transverse long strip-shaped gap or a reverse-vertical long strip-shaped gap, the reverse-transverse long strip-shaped gap or the reverse-vertical long strip-shaped gap is 10-30 mm.
7. A method for suppressing waves at high pulling speed and reverse inclined hole type for continuous casting of sheet blank according to claim 1, characterized in that the total area of the reverse inclined holes (7) is 10-40% of the total area of the wave suppressing plate (9).
8. The slab continuous casting high-pulling-speed reverse-inclined hole type wave suppression method according to claim 1, characterized in that the hanger (2) is fixedly arranged below the tundish (12), and the submerged nozzle (1) at the bottom of the tundish (12) extends into the molten steel (10) inside the crystallizer (11) through the hanger (2);
hanger (2) bottom surface both sides sliding connection has sliding module (3), can dismantle on sliding module (3) and be connected with support arm (5), the bottom of support arm (5) is connected with wave suppression board (9) through steel structure protective sheath (6), set up on wave suppression board (9) a plurality of and molten steel (10) the anti-inclined hole (7) of the opposite direction that flows.
9. The slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method according to claim 8, characterized in that the mold (11) is internally provided with the mold flux (8), and the wave suppression plate (9) is arranged inside the mold (11) and penetrates through the mold flux (8).
10. The method of claim 9, wherein the angle between the reverse inclined hole (7) and the backflow direction of the molten steel (10) is less than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210502548.0A CN114888270A (en) | 2022-05-09 | 2022-05-09 | Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210502548.0A CN114888270A (en) | 2022-05-09 | 2022-05-09 | Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method |
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| CN114888270A true CN114888270A (en) | 2022-08-12 |
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| CN202210502548.0A Pending CN114888270A (en) | 2022-05-09 | 2022-05-09 | Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118393159A (en) * | 2024-06-27 | 2024-07-26 | 天津海关工业产品安全技术中心 | Biological sample detection platform based on biosensor |
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2022
- 2022-05-09 CN CN202210502548.0A patent/CN114888270A/en active Pending
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| JP2003305551A (en) * | 2002-04-10 | 2003-10-28 | Nippon Steel Corp | Immersion nozzle for continuous casting |
| JP2004344900A (en) * | 2003-05-20 | 2004-12-09 | Nippon Steel Corp | Dipping nozzle and continuous casting method using the same |
| CN202845761U (en) * | 2012-09-17 | 2013-04-03 | 北京科技大学 | Novel tundish for highly purified liquid steel |
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| CN118393159A (en) * | 2024-06-27 | 2024-07-26 | 天津海关工业产品安全技术中心 | Biological sample detection platform based on biosensor |
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