CN106735153B - Polycyclic stopper - Google Patents
Polycyclic stopper Download PDFInfo
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- CN106735153B CN106735153B CN201611007887.2A CN201611007887A CN106735153B CN 106735153 B CN106735153 B CN 106735153B CN 201611007887 A CN201611007887 A CN 201611007887A CN 106735153 B CN106735153 B CN 106735153B
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- stopper
- stick body
- annular convex
- convex platform
- 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
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
- B22D41/18—Stopper-rods therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Molten steel is able to suppress the invention discloses one kind and generates vortex, and advantageous inclusion floating improves the polycyclic stopper of Cleanliness of Molten Steel, which belongs to the steel-making continuous casting field of metallurgical production.The polycyclic stopper, including stick body, stick body one end are stick body free end, and the other end is provided with caput, at least two annular convex platform are equipped with the stick；The diameter of the annular convex platform is incremented by from stick body free end to the direction at caput end, and is all larger than the diameter of stick body.Using the polycyclic stopper, be conducive to the floating of field trash, be conducive to improve the cleanliness for flowing into molten steel in mold.
Description
Technical field
The present invention relates to a kind of stopper, especially a kind of polycyclic stopper.
Background technique
It is known that: sequence casting is carried out during continuous casting of ultralow carbon steel, tundish usually selects Al2O3- C matter stopper into
Row flow control, existing stopper is stick body and caput, and is provided with venting channels in stick body.
For the defect of existing stopper, this field scientific research personnel improves existing stopper, such as:
1, application No. is the Chinese invention patents of 201310129083.X to disclose a kind of porous stopper of continuous casting, by the mouth of a river
It is cleaned out with the impurity product of stopper head contact portion, reduces molten steel bias current in the mouth of a river.
2, application No. is the Chinese invention patents of 201010513576.X to disclose a kind of wave-shaped stopper rod for continuous casting, stopper
Head is at least disposed with two rotary tables of the first rotary table and the second rotary table along its axis, and the diameter of the first rotary table is greater than described second
The diameter of rotary table.It can prevent vortex from generating, improve the stability of steel stream, and then continuous casting steel machine billet quality can be improved.
3, application No. is 201010513579.3 Chinese invention patents to disclose a kind of Multilayer stopper rod used in continuous casting, including plug
Barred body and stopper head, the stopper head, which includes at least, one layer of backing layer, the backing layer outer surface and the Stopper Body appearance
Face smooth transition.Can according to need the backing layer that different materials is selected at different positions, stopper head is washed away in reduction,
With better corrosion resistance, to extend the service life of stopper, the pollution to molten steel is reduced.
4, application No. is 201110048979.6 Chinese invention patents to disclose a kind of spindle-shaped integrated stopper rod, and slag line is
Spindle.By optimization design body shape, increase the thickness of slag lining, to extend product service life, reduces
Compound slag line design bring production and design problem.
Foregoing invention patent not can be reduced molten steel and flow into the vortex that crystallizer is formed by stopper surrounding, to not be avoided that
Vortex is involved in steel slag, it cannot be guaranteed that flowing into the cleanliness of molten steel in mold.
5, application No. is 201010513576.X, patent name is the Chinese invention patent of " continuous casting wave stopper ",
A kind of wave-shaped stopper rod for continuous casting is disclosed, stopper head is at least disposed with the first rotary table and two, the second rotary table along its axis
Rotary table, the diameter of the first rotary table are greater than the diameter of second rotary table.It can prevent vortex from generating, improve the stability of steel stream,
And then continuous casting steel machine billet quality can be improved.
Since the first rotary table and the second rotary table are arranged at caput, above caput, it is possible to create minimum vortex,
Steel slag in molten steel is brought into crystallizer, although above structure can prevent to form turbine substitution steel slag at caput,
It is that effect is poor, it cannot be guaranteed that the cleanliness of molten steel in mold.
6, application No. is 201110419505.8 Chinese patent, to disclose a kind of continuous casting oxide-non-oxidized substance compound
Integral column of sagger, for the stick of integral column of sagger as alumina-carbon material, stopper head is refractory composites, caput and stick
Using mixed transition material between the two between body.Make full use of non-oxidized substance fusing point height, low thermal expansion, thermal shock resistance
Well, it is not easy the advantages of being infiltrated by molten steel, anti-molten steel when improving caput materials'use washes away and aggressivity.
7, application No. is the Chinese patents of 201110134527.X to disclose a kind of ceramic combined integral stopper rod and its system
Make technique, it is ensured that stopper, which can be withstood, to be washed away for a long time, corrodes, and phenomena such as turning around, peeling off is less prone to, when being able to satisfy long
Between continuous casting requirement.
8, application No. is the Chinese invention patents of CN201110415487.6 to disclose a kind of continuous casting high corrosion-resistant entirety
Stopper reduces the porosity of stopper stick body, improves slag-resistant permeability, it is molten to reduce alkalinity by optimizing the material of stopper stick body
Erosion of the slag to integral column of sagger stick body, improves the service life of stopper.
9, application No. is 201110215202.4, and application No. is 201110217390.4 patents of invention to disclose hair
With aluminium titanates, mullite, the carbon-free integral column of sagger based on aluminum oxide facilitates clean steel continuous casting.
10, application No. is 201210553827.6 Chinese invention patents to disclose a kind of composite monolithic stopper rod and its production
Method, the composite monolithic stopper rod include caput, changeover portion and stick body, and caput uses magnesium carbon materials matter, and stick body uses aluminium carbon materials matter, stick
Changeover portion between head and stick body uses spinelle carbon materials matter, this composite monolithic stopper rod avoids conventional transition material in use process
In the phenomenon that generating spinelle due to reacting and generate volume expansion, eventually leading to caput fracture.
11, application No. is 201610040164.6 Chinese invention patent, to disclose a kind of corundum, mullite integrated poured
Stopper, meet continuous casting requirement.
Summary of the invention
Molten steel, which is able to suppress, technical problem to be solved by the invention is to provide one kind generates vortex, advantageous inclusion floating
Improve the polycyclic stopper of Cleanliness of Molten Steel.
The technical solution adopted by the present invention to solve the technical problems is: polycyclic stopper, including stick body, stick body one end
For stick body free end, the other end is provided with caput, at least two annular convex platform is equipped with the stick；The annular convex platform it is straight
Diameter is incremented by from stick body free end to the direction at caput end, and is all larger than the diameter of stick body.
Further, the thickness d 2 of the annular convex platform is 60~100mm, the spacing d1 between two neighboring annular convex platform
For 100~150mm.
Further, the annular convex platform is three.
Preferably, along stick body free end to caput direction, the diameter of each annular convex platform be followed successively by stick body diameter 1.2,
1.4,1.6 times.
Further, the polycyclic stopper is made of the component of following parts by weight:
Al2O364~88 parts,
10~12 parts of graphite,
1~3 part of antioxidant Al powder,
Ti3SiC22~4 parts,
4~8 parts of resin.
Preferably, the Al2O3Partial size composition are as follows:
Less than or equal to 3mm and greater than the Al of 1mm2O34~8 parts,
Less than or equal to 1mm, and it is more than or equal to the Al of 0.074mm2O335~45 parts,
Al less than 0.074mm2O325~35 parts.
The beneficial effects of the present invention are: polycyclic stopper of the present invention is provided at least two due to the stick body in stopper
Annular convex platform, therefore can be avoided the molten steel flowed down around stopper and form vortex, be conducive to the floating of field trash, to improve
The cleanliness of molten steel.Simultaneously because the diameter of annular convex platform is incremented by from stick body free end to the direction of caput, and it is all larger than stick body
Diameter；Therefore during the molten steel around stopper flows downward along stopper, it will receive the resistance of annular convex platform, to drop
Low molten steel flow speed, and change the flow direction of molten steel, so that liquid steel level is steady, is conducive to the floating of field trash, is conducive to
Improve the cleanliness for flowing into molten steel in mold.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of polycyclic stopper in the embodiment of the present invention；
Fig. 2 is MOLTEN STEEL FLOW direction schematic diagram around traditional stopper；
It is indicated in figure: 1- stick body, the free end 11-, 2- caput, 3- venting channels, 4- annular convex platform.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, polycyclic stopper of the present invention, including stick body 1, described 1 one end of stick body are stick body free end 11,
The other end is provided with caput 2, and the stick body 1 is equipped at least two annular convex platform 4；The diameter of the annular convex platform 4 is by stick body
Free end 11 is incremented by the direction at 2 end of caput, and is all larger than the diameter of stick body 1.
During use, argon gas is passed through into ventilation pipe 3, molten steel flows to caput by 1 surrounding of stick body, is flowed into knot
In brilliant device.Since the stick body 1 is equipped at least two annular convex platform 4；The diameter of the annular convex platform 4 is by stick body free end 11
It is incremented by the direction at 2 end of caput, and is all larger than the diameter of stick body 1.As shown in figure 1 shown in arrow direction, molten steel is downward along stick body 1
During flowing, will receive the obstruction of annular convex platform 4 so that molten steel flows to two sides, then 2 position of caput again
Caput 2 is flowed to, to reduce the flowing velocity of molten steel, changes simultaneously the flow direction of molten steel, avoids generating vortex, is conducive to press from both sides
The floating of sundries.
Due at least two annular convex platform 4 on stick body 1；Therefore it can change the molten steel flowed along stick body 2 compared with limits
Flow direction, simultaneously because the diameter of the annular convex platform 4 is incremented by from stick body free end 11 to the direction at 2 end of caput, and be all larger than
The diameter of stick body 1, therefore the flow direction of molten steel could be made outside, it prevents molten steel from flowing along stick body 1 and forms vortex.
In conclusion polycyclic stopper of the present invention is since the stick body in stopper is provided at least two annular convex platform 4,
Therefore it can be avoided the molten steel flowed down around stopper and form vortex, to be conducive to the floating of field trash, improve the clean of molten steel
Cleanliness.Simultaneously because the diameter of annular convex platform 4 is incremented by from the free end of stick body 1 11 to the direction of caput 2, and it is all larger than stick body
Diameter；Therefore during the molten steel around stopper flows downward along stopper, it will receive the resistance of annular convex platform 4, to drop
Low flow velocity changes simultaneously flow direction, so that MOLTEN STEEL FLOW is steady, is able to suppress generation vortex, is conducive to the floating of field trash, favorably
In the cleanliness for improving inflow molten steel in mold.
In one embodiment, it is preferred that the thickness d 2 of the annular convex platform 4 is 60~100mm, two neighboring annular convex platform
Spacing d1 between 4 is 100~150mm.By by the thickness of annular convex platform 4 be set as 60~100mm can to molten steel into
Row adequately stops, while avoiding the blocked up length for causing stick body 2 of annular convex platform 4 too long, and it is too thin to also avoid annular convex platform 4,
The problem of being easily damaged, being not easy to processing.
If the spacing d1 between two annular convex platform 4 is too small, two neighboring annular convex platform 4 is leaned on too close, then to steel
Water flow to the effect of obstruction will depend only on the boss being relatively large in diameter, if the spacing d1 between two annular convex platform 4 is too big,
So upper, annular boss 4 is to the inhibition of molten steel, when molten steel reaches lower annular boss 4, molten steel again along
The change that the flowing of stick body or upper, annular boss 4 flow to molten steel has become very faint.Therefore by two neighboring convex annular
Spacing d1 between platform 4 is set as 100~150mm, so as to be become step by step by annular convex platform 4 at different levels to molten steel flow direction
To can be improved the effect for hindering molten steel to form vortex so that MOLTEN STEEL FLOW is steady.
In order to guarantee that annular convex platform 4 can change the flow direction of molten steel, molten steel is avoided to form vortex, while from guaranteeing as far as possible
The calmness of liquid steel level, to be conducive to the floating of field trash, further, the annular convex platform 4 is three.Due to a ring
Shape boss 4 is changed once the flow direction of molten steel, and multiple annular convex platform 4 may make the change to molten steel prevalence step by step
It carries out, realizes steady change, do not easily cause the disturbance of steel flow layer, be conducive to the floating of field trash, improve Cleanliness of Molten Steel.
The change effect of molten steel flow direction is arrived along stick body free end 11 in another embodiment further in order to improve
2 direction of caput, the diameter of each annular convex platform 4 are followed successively by the 1.2 of stick body diameter, 1.4,1.6 times.Each annular convex platform 4 is using upper
Diameter is stated, so that MOLTEN STEEL FLOW is steady, can not only guarantee that molten steel is flowed to stick body outside, simultaneously when change molten steel flows to
Can molten steel when flowing to caput again smooth flow be not in rapid fluid layer.Secondly, can also guarantee the same of said effect
Shi Jieyue material.
In another embodiment, in order to avoid the fracture of stopper, improve anti-molten steel and wash away and aggressivity, improve stopper and use
Service life, while reducing cost.Preferably, the polycyclic stopper, is made of the component of following parts by weight:
Al2O364~88 parts,
8~12 parts of graphite,
1~3 part of antioxidant Al powder,
Ti3SiC22~4 parts,
4~8 parts of resin.
Further, the polycyclic stopper, the Al2O3Partial size composition are as follows:
Less than or equal to 3mm and greater than the Al of 1mm2O34~8 parts,
Less than or equal to 1mm, and it is more than or equal to the Al of 0.074mm2O335~45 parts,
Al less than 0.074mm2O325~35 parts.
Upper polycyclic stopper is made of the component of following parts by weight: 3~1mm of partial size Al2O34~8 parts, 1~0mm Al2O3
35~45 parts, partial size < 0.074mm Al2O325~35 parts, 8~12 parts of graphite, 1~3 part of antioxidant Al powder, Ti3AlC2 2
~4 parts, 4~8 parts of additional resin.The cascade ring stopper can be improved the corrosion resistance of stopper, increase service life, simultaneously
Structure is simple, and manufacturing cost is low, and is conducive to improve Cleanliness of Molten Steel.
Claims (5)
1. polycyclic stopper, including stick body (1), described stick body (1) one end is stick body free end (11), and the other end is provided with caput
(2), it is characterised in that: the stick body (1) is equipped at least two annular convex platform (4)；The diameter of the annular convex platform (4) is by stick
The direction that body free end (11) is held to caput (2) is incremented by, and is all larger than the diameter of stick body (1)；
The thickness d 2 of the annular convex platform (4) is 60~100mm, the spacing d1 between two neighboring annular convex platform (4) is 100~
150mm。
2. polycyclic stopper according to claim 1, it is characterised in that: the annular convex platform (4) is three.
3. polycyclic stopper according to claim 2, it is characterised in that: arrive caput (2) direction along stick body free end (11), respectively
The diameter of annular convex platform (4) is followed successively by the 1.2 of stick body diameter, 1.4,1.6 times.
4. described in any item polycyclic stoppers according to claim 1~3, it is characterised in that: the polycyclic stopper is by following weight
The component of part is made:
Al2O364~88 parts,
8~12 parts of graphite,
1~3 part of antioxidant Al powder,
Ti3SiC22~4 parts,
4~8 parts of resin.
5. polycyclic stopper according to claim 4, it is characterised in that: the Al2O3Partial size composition are as follows:
Less than or equal to 3mm and greater than the Al of 1mm2O34~8 parts,
Less than or equal to 1mm, and it is more than or equal to the Al of 0.074mm2O335~45 parts,
Al less than 0.074mm2O325~35 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007887.2A CN106735153B (en) | 2016-11-16 | 2016-11-16 | Polycyclic stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007887.2A CN106735153B (en) | 2016-11-16 | 2016-11-16 | Polycyclic stopper |
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| Publication Number | Publication Date |
|---|---|
| CN106735153A CN106735153A (en) | 2017-05-31 |
| CN106735153B true CN106735153B (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611007887.2A Active CN106735153B (en) | 2016-11-16 | 2016-11-16 | Polycyclic stopper |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380862A (en) * | 2018-04-03 | 2018-08-10 | 青岛正望钢水控制股份有限公司 | A kind of anti-slag stopper of continuous casting |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02263564A (en) * | 1989-03-31 | 1990-10-26 | Nkk Corp | Stopper |
| CN101712558A (en) * | 2009-05-25 | 2010-05-26 | 上海宝明耐火材料有限公司 | Stopper rod head and immersion water gap bowl material for continuous casting |
| CN101780540A (en) * | 2008-12-16 | 2010-07-21 | 中国第一重型机械股份公司 | Pouring box plug rod used for vacuum ingot casting |
| CN202270965U (en) * | 2011-09-26 | 2012-06-13 | 青岛正望钢水控制股份有限公司 | Slag carry-over preventing stopper of tundish for continuous casting |
| CN204842955U (en) * | 2015-04-21 | 2015-12-09 | 宝山钢铁股份有限公司 | Excellent pushing off slag of long -life stopper circle subassembly |
-
2016
- 2016-11-16 CN CN201611007887.2A patent/CN106735153B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02263564A (en) * | 1989-03-31 | 1990-10-26 | Nkk Corp | Stopper |
| CN101780540A (en) * | 2008-12-16 | 2010-07-21 | 中国第一重型机械股份公司 | Pouring box plug rod used for vacuum ingot casting |
| CN101712558A (en) * | 2009-05-25 | 2010-05-26 | 上海宝明耐火材料有限公司 | Stopper rod head and immersion water gap bowl material for continuous casting |
| CN202270965U (en) * | 2011-09-26 | 2012-06-13 | 青岛正望钢水控制股份有限公司 | Slag carry-over preventing stopper of tundish for continuous casting |
| CN204842955U (en) * | 2015-04-21 | 2015-12-09 | 宝山钢铁股份有限公司 | Excellent pushing off slag of long -life stopper circle subassembly |
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| Publication number | Publication date |
|---|---|
| CN106735153A (en) | 2017-05-31 |
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Effective date of registration: 20181025 Address after: 610306 Chengdu City, Chengdu, Sichuan, China (Sichuan) free trade test zone, Chengdu City, Qingbaijiang District, xiangdao Boulevard, Chengxiang Town, No. 1509 (room 13, A District, railway port mansion), room 1319 Applicant after: Chengdu advanced metal material industry technology Research Institute Co., Ltd. Address before: 617000 Taoyuan street, East District, Panzhihua, Sichuan Province, No. 90 Applicant before: Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. |
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Address after: 610306 Chengdu City, Chengdu, Sichuan, China (Sichuan) free trade test zone, Chengdu City, Qingbaijiang District, xiangdao Boulevard, Chengxiang Town, No. 1509 (room 13, A District, railway port mansion), room 1319 Patentee after: Chengdu advanced metal material industry technology Research Institute Co.,Ltd. Address before: 610306 Chengdu City, Chengdu, Sichuan, China (Sichuan) free trade test zone, Chengdu City, Qingbaijiang District, xiangdao Boulevard, Chengxiang Town, No. 1509 (room 13, A District, railway port mansion), room 1319 Patentee before: CHENGDU ADVANCED METAL MATERIAL INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |