CN106521282B - Cascade ring stopper - Google Patents
Cascade ring stopper Download PDFInfo
- Publication number
- CN106521282B CN106521282B CN201611007549.9A CN201611007549A CN106521282B CN 106521282 B CN106521282 B CN 106521282B CN 201611007549 A CN201611007549 A CN 201611007549A CN 106521282 B CN106521282 B CN 106521282B
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- parts
- stopper
- rod body
- molten steel
- annular convex
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/12—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on oxides
-
- 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)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses one kind can increase stopper service life, improve the cascade ring stopper of Cleanliness of Molten Steel.The cascade ring stopper belongs to the steel-making continuous casting field of metallurgical production.The cascade ring stopper is made of the component of following parts by weight：Al2O364~88 parts, TiO22~4 parts, 10~12 parts of graphite, Ti3SiC22~4 parts, 1~3 part of Al powder, 4~8 parts of resin.Using the cascade ring stopper, it is possible to increase the corrosion resistance of stopper, increases service life, while simple in structure, and manufacture cost is low, and is conducive to improve Cleanliness of Molten Steel.
Description
Technical field
The present invention relates to a kind of stopper, especially a kind of cascade ring stopper.
Background technology
It is well-known：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 rod body and caput, and is provided with venting channels in rod body.
The defects of for existing stopper, this area scientific research personnel improve existing stopper, such as：
1st, it is compound to disclose a kind of continuous casting oxide-non-oxidized substance for the Chinese patent of Application No. 201110419505.8
Integral column of sagger, for the rod of integral column of sagger as alumina-carbon material, stopper head is refractory composites, caput and rod
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, the advantages of being not easy to be infiltrated by molten steel, anti-molten steel when improving caput materials'use washes away and aggressivity.
2nd, the Chinese patent of Application No. 201110134527.X discloses a kind of ceramic combined integral stopper rod and its system
Make technique, it is ensured that stopper can be withstood to be washed away, corrodes for a long time, phenomena such as turning around, peeling off is less prone to, when can meet long
Between direct casting requirement.
3rd, it is overall to disclose a kind of continuous casting high corrosion-resistant for the Chinese invention patent of Application No. CN201110415487.6
Stopper, by optimizing the material of stopper rod body, reduces the porosity of stopper rod body, improves slag-resistant permeability, it is molten to reduce alkalescence
Erosion of the slag to integral column of sagger rod body, improves the service life of stopper.
4th, Application No. 201110215202.4, and the patent of invention of Application No. 201110217390.4 disclose hair
With aluminium titanates, mullite, the carbon-free integral column of sagger based on alundum (Al2O3), contributes to clean steel continuous casting.
5th, the Chinese invention patent of Application No. 201210553827.6 discloses a kind of composite monolithic stopper rod and its making
Method, the composite monolithic stopper rod include caput (1), changeover portion (2) and rod body (3), and caput (1) uses magnesium carbon materials matter, rod body (3)
Using aluminium carbon materials matter, the changeover portion (2) between caput (1) and rod body (3) uses spinelle carbon materials matter, this composite monolithic stopper rod is kept away
Exempted from conventional transition material in use due to react generation spinelle and produce volumetric expansion, ultimately result in caput and break
The phenomenon split.
6th, it is integrated poured to disclose a kind of corundum, mullite for the Chinese invention patent of Application No. 201610040164.6
Stopper, meets continuous casting requirement.
7th, the Chinese invention patent of Application No. 201310129083.X discloses a kind of porous stopper of continuous casting, by the mouth of a river
Cleaned out with the impurity product of stopper head contact portion, reduce molten steel bias current in the mouth of a river.
8th, the Chinese invention patent of Application No. 201010513576.X discloses a kind of wave-shaped stopper rod for continuous casting, stopper
Head is at least disposed with two round platforms of the first round platform and the second round platform along its axis, and the diameter of the first round platform is more than described second
The diameter of round platform.It can prevent vortex from generating, improve the stability of steel stream, and then continuous casting steel machine billet quality can be improved.
9th, the Chinese invention patent of Application No. 201010513579.3 discloses 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 seamlessly transits.The backing layer of different materials can be selected at different positions as needed, reduces and stopper head is washed away,
With more preferable corrosion resistance, so as to extend the service life of stopper, the pollution to molten steel is reduced.
10th, the Chinese invention patent of Application No. 201110048979.6 discloses a kind of spindle-shaped integrated stopper rod, slag line
For spindle.By optimization design body shape, increase the thickness of slag lining, so as to extend product service life, reduce
The production and design problem that compound slag line design is brought.
Foregoing invention patent 6-10 cannot reduce the vortex that molten steel is formed by stopper surrounding inflow crystallizer, so that cannot
Vortex is avoided to be involved in slag, it is impossible to ensure to flow into the cleanliness factor of molten steel in mold.
11st, Application No. 201010513576.X, patent name are《Continuous casting wave stopper》Chinese invention patent,
A kind of wave-shaped stopper rod for continuous casting is disclosed, stopper head is at least disposed with the first round platform and two, the second round platform along its axis
Round platform, the diameter of the first round platform are more than the diameter of second round platform.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 round platform and the second round platform are arranged at caput, above caput, it is possible to create minimum vortex,
Slag in molten steel is brought into crystallizer, although said structure can prevent to form turbine substitution slag at caput,
It is that effect is poor, it is impossible to ensure the cleanliness factor of molten steel in mold.
The content of the invention
The technical problems to be solved by the invention, which are to provide one kind, can increase stopper service life, improve Cleanliness of Molten Steel
Cascade ring stopper.
The technical solution adopted by the present invention to solve the technical problems is：The cascade ring stopper by following parts by weight group
Divide and be made：
Al2O364~88 parts,
TiO22~4 parts,
10~12 parts of graphite,
Ti3SiC22~4 parts,
1~3 part of Al powder,
4~8 parts of resin.
Preferably, the Al2O3Particle diameter composition be：
Al less than or equal to 3mm and more than 1mm2O34~8 parts,
Less than or equal to 1mm, and the Al more than or equal to 0.074mm2O335~45 parts,
Al less than 0.074mm2O325~35 parts.
Further, cascade ring stopper, including rod body, described rod body one end are rod body free end, and the other end is provided with rod
Head, the rod are equipped with least two annular convex platform with it；Side of the diameter of the annular convex platform from rod body free end to caput end
To being incremented by, and the diameter of rod body is all higher than.
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 rod body free end to caput direction, the diameter of each annular convex platform be followed successively by rod body diameter 1.2,
1.4th, 1.6 times.
The beneficial effects of the invention are as follows：Cascade ring stopper of the present invention is made of the component of following parts by weight：Al2O3
64~88 parts, TiO22~4 parts, 10~12 parts of graphite, Ti3SiC22~4 parts, 1~3 part of Al powder, 4~8 parts of resin.Therefore originally
The invention cascade ring stopper can improve the corrosion resistance of stopper, increase service life, while simple in structure, manufacture cost
It is low, and be conducive to improve Cleanliness of Molten Steel.
Further, since the rod body in stopper is provided with least two annular convex platform, can avoid from stopper week
Enclose the molten steel flowed down and form vortex, be conducive to the floating of field trash, so as to improve the cleanliness factor of molten steel.Simultaneously because convex annular
The diameter of platform is incremented by from rod body free end to the direction of caput, and is all higher than the diameter of rod body；Therefore the molten steel around stopper
During flowing downward along stopper, the resistance of annular convex platform can be subject to, so as to reduce molten steel flow speed, and change the stream of molten steel
Dynamic direction so that liquid steel level is steady, is conducive to the floating of field trash, is conducive to improve the cleaning for flowing into molten steel in mold
Degree.
Brief description of the drawings
Fig. 1 is the structure diagram of ladder ring taps rod in the embodiment of the present invention；
Fig. 2 is MOLTEN STEEL FLOW direction schematic diagram around traditional stopper；
Indicated in figure：1- rod bodies, 11- free ends, 2- caputs, 3- venting channels, 4- annular convex platform.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment one
Using components by weight percent as Al2O364 parts, TiO2Part, 10 parts of graphite, Ti3SiC22 parts, 1 part of Al powder, 4 parts of resin is original
For material under 800~1200MPa of pressure, hydrostatic profile, is made conventional stopper size；Then radius is processed into successively in stopper rod body
For the cascade ring of 1.6,1.4 and 1.2 times of rod body radiuses, ring is high by 60, and interannular is away from 100.By the stopper processed at 500~600 DEG C
Lower baking, toasts after brush antioxidant coating with tundish and can be used.
Embodiment two
Using components by weight percent as：Al2O378 parts, TiO23 parts, 11 parts of graphite, Ti3SiC23 parts, 2 parts of Al powder, 6 parts of resin
Raw material；Hydrostatic profile, pressure are 800~1200MPa；Conventional stopper size is made；Then half is processed into successively in stopper rod body
Footpath is the cascade ring of 1.6,1.4 and 1.2 times of rod body radiuses, and the high 80mm of ring, interannular is away from 125mm.By the stopper processed 500~
Toasted at 600 DEG C, toast with tundish after brush antioxidant coating and can be used.
Embodiment three
Using components by weight percent as Al2O388 parts, TiO24 parts, 12 parts of graphite, Ti3SiC24 parts, 3 parts of Al powder, 8 parts of resin is
Raw material；Pressure 800~1200MPa hydrostatic profiles, are made conventional stopper size；Then being processed into radius successively in stopper rod body is
1.6th, the cascade ring of 1.4 and 1.2 times of rod body radiuses, the high 100mm of ring, interannular is away from 150mm.By the stopper processed 500~600
Toasted at DEG C, toast with tundish after brush antioxidant coating and can be used.
Ladder ring taps rod is made of the component of following parts by weight in above-described embodiment：Al2O364~88 parts, TiO22~4
Part, 10~12 parts of graphite, Ti3SiC22~4 parts, 1~3 part of Al powder, 4~8 parts of resin.The cascade ring stopper can improve
The corrosion resistance of stopper, increases service life, while simple in structure, and manufacture cost is low, and is conducive to improve Cleanliness of Molten Steel.
As shown in Figure 1, cascade ring stopper of the present invention, including rod body 1, described 1 one end of rod body are rod body free end
11, the other end is provided with caput 2, and the rod body 1 is equipped with least two annular convex platform 4；The diameter of the annular convex platform 4 is by rod
The direction at body free end 11 to 2 end of caput is incremented by, and is all higher than the diameter of rod body 1.
During use, argon gas is passed through into ventilation pipe 3, molten steel flows to caput by 1 surrounding of rod body, is flowed into knot
In brilliant device.Since the rod body 1 is equipped with least two annular convex platform 4；The diameter of the annular convex platform 4 is by rod body free end 11
It is incremented by the direction at 2 end of caput, and is all higher than the diameter of rod body 1.As shown in the direction of arrow in Fig. 1, molten steel is downward along rod body 1
During flowing, the obstruction of annular convex platform 4 can be subject to, so that molten steel flows to both sides, then at 2 position of caput again
Caput 2 is flowed to, so as to reduce the flowing velocity of molten steel, while changes the flow direction of molten steel, avoids producing vortex, is conducive to press from both sides
The floating of debris.
Due at least two annular convex platform 4 on rod body 1；Therefore the molten steel flowed along rod body 2 can be changed compared with limits
Flow direction, simultaneously because the direction at the diameter of the annular convex platform 4 from rod body free end 11 to 2 end of caput is incremented by, and be all higher than
The diameter of rod body 1, therefore could make it that the flow direction of molten steel is outside, prevent molten steel from being flowed along rod body 1 and form vortex.
In conclusion cascade ring stopper of the present invention is provided with least two annular convex platform due to the rod body in stopper
4, therefore the molten steel that can avoid flowing down around stopper forms vortex, so as to be conducive to the floating of field trash, improves molten steel
Cleanliness factor.Simultaneously because the direction of the diameter of annular convex platform 4 from free end 11 to the caput 2 of rod body 1 is incremented by, and it is all higher than rod body
Diameter；Therefore during the molten steel around stopper flows downward along stopper, the resistance of annular convex platform 4 can be subject to, so that
Flow velocity is reduced, while changes flow direction so that MOLTEN STEEL FLOW is steady, can suppress to produce vortex, be conducive to the floating of field trash, have
Beneficial to the cleanliness factor 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 arranged to 60~100mm can to molten steel into
Row sufficiently stops, at the same avoid annular convex platform 4 it is blocked up cause rod body 2 length it is too long, it is too thin to it 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 leans on too near, then to steel
Current to the effect of obstruction will depend only on the boss that is 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
Rod body flows, or the change that upper, annular boss 4 flows to molten steel has become very faint.Therefore by two neighboring convex annular
Spacing d1 between platform 4 is arranged to 100~150mm, so as to be become step by step to molten steel flow direction by annular convex platform 4 at different levels
To so that MOLTEN STEEL FLOW is steady, it is possible to increase hinders molten steel to form the effect of vortex.
In order to ensure that annular convex platform 4 can change the flow direction of molten steel, molten steel is avoided to form vortex, while from ensureing as far as possible
The calmness of liquid steel level, so as 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 are that may be such that change to molten steel prevalence step by step
Carry out, realize 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.
In order to improve the change effect to molten steel flow direction, in another embodiment further, arrived along rod body free end 11
2 direction of caput, the diameter of each annular convex platform 4 are followed successively by the 1.2 of rod body diameter, 1.4,1.6 times.Each annular convex platform 4 is using upper
Diameter is stated, can not only be when change molten steel flows to so that MOLTEN STEEL FLOW is steady, ensures that molten steel is flowed to rod body outside, at the same time
Can molten steel when flowing to caput again smooth flow be not in rapid fluid layer.Secondly, moreover it is possible to ensureing the same of the effect above
Shi Jieyue materials.
Claims (5)
1. cascade ring stopper, the cascade ring stopper is made of the component of following parts by weight：
Al2O364~88 parts,
TiO22~4 parts,
10~12 parts of graphite,
Ti3SiC22~4 parts,
1~3 part of Al powder,
4~8 parts of resin；
The cascade ring stopper, including rod body (1), described rod body (1) one end are rod body free end (11), and the other end is provided with rod
Head (2), the rod body (1) are equipped with least two annular convex platform (4)；The diameter of the annular convex platform (4) is by rod body free end
(11) direction held to caput (2) is incremented by, and is all higher than the diameter of rod body (1), it is characterised in that：The annular convex platform (4)
Thickness d 2 is 60~100mm, and the spacing d1 between two neighboring annular convex platform (4) is 100~150mm.
2. cascade ring stopper according to claim 1, it is characterised in that：The Al2O3Particle diameter composition be：
Al less than or equal to 3mm and more than 1mm2O34~8 parts,
Less than or equal to 1mm, and the Al more than or equal to 0.074mm2O335~45 parts,
Al less than 0.074mm2O325~35 parts.
3. cascade ring stopper according to claim 2, it is characterised in that：The TiO2Particle diameter be 10~20nm.
4. according to the cascade ring stopper described in claim 1,2 or 3, it is characterised in that：The annular convex platform (4) is three.
5. cascade ring stopper according to claim 4, it is characterised in that：Caput (2) direction is arrived along rod body free end (11),
The diameter of each annular convex platform (4) is followed successively by the 1.2 of rod body diameter, 1.4,1.6 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007549.9A CN106521282B (en) | 2016-11-16 | 2016-11-16 | Cascade ring stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611007549.9A CN106521282B (en) | 2016-11-16 | 2016-11-16 | Cascade ring stopper |
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| Publication Number | Publication Date |
|---|---|
| CN106521282A CN106521282A (en) | 2017-03-22 |
| CN106521282B true CN106521282B (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611007549.9A Active CN106521282B (en) | 2016-11-16 | 2016-11-16 | Cascade ring stopper |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102515798A (en) * | 2011-12-12 | 2012-06-27 | 辽宁科大东方巨业高级陶瓷有限公司 | High corrosion resistant integral stopper 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2611151B1 (en) * | 1987-02-20 | 1991-06-14 | Daussan & Co | DEVICE FOR PREHEATING AND / OR SEALING AND UNCOUPLING A CASTING ORIFICE AND METHOD FOR ITS IMPLEMENTATION |
-
2016
- 2016-11-16 CN CN201611007549.9A patent/CN106521282B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102515798A (en) * | 2011-12-12 | 2012-06-27 | 辽宁科大东方巨业高级陶瓷有限公司 | High corrosion resistant integral stopper 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 |
|---|---|
| CN106521282A (en) | 2017-03-22 |
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