CN106513653B - Continuous casting stopper rod with ventilative ring - Google Patents
Continuous casting stopper rod with ventilative ring Download PDFInfo
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- CN106513653B CN106513653B CN201611009500.7A CN201611009500A CN106513653B CN 106513653 B CN106513653 B CN 106513653B CN 201611009500 A CN201611009500 A CN 201611009500A CN 106513653 B CN106513653 B CN 106513653B
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- ventilative ring
- ring
- stick body
- ventilative
- annulus
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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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
- C04B2111/00887—Ferrous metallurgy
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
Abstract
The invention discloses one kind capable of improving stopper corrosion resistance, extends the continuous casting stopper rod with ventilative ring of stopper service life.It includes stick body that this, which has the continuous casting stopper rod of ventilative ring, and the stick body is provided with ventilative ring, and gas-permeable channels are provided in the ventilative ring；The gas-permeable channels include vertical air inlet pipe, annulus snorkel；Described vertical air inlet pipe one end is extended in ventilative ring by ventilative ring upper bottom surface and is connected to annulus snorkel；The stick body is located in the annulus of annulus snorkel, the annulus snorkel and stick body are coaxial, and circumferentially equally distributed branch pipe is provided on the circular ring shape tracheae, the branch pipe radially extends, and the branch pipe port is provided with the flat burner in ventilative ring；Ventilative ring be made of the component of following parts by weight：Al2O364~88 parts, 2~4 parts of ZrC, B40~1 part of C, 10~12 parts of graphite, 1~2 part of Al powder, 4~8 parts of resin.There is the continuous casting stopper rod of ventilative ring using this, service life is long, and simple in structure, and manufacturing cost is low.
Description
Technical field
The present invention designs a kind of stopper, especially a kind of continuous casting stopper rod with ventilative ring.
Background technology
It is well-known：Sequence casting is carried out during continuous casting of ultralow carbon steel, tundish usually selects Al2O3- C matter stoppers
Flow control is carried out, existing stopper is stick body and caput, and is provided with venting channels in stick body.Using existing stopper,
With the extension of casting time, there is apparent melting loss in slag lining and caput, directly affect the service life of stopper, more unfavorable
It is stopper to molten steel carburetting, to influence Molten Steel Cleanliness.
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 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.
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 seamlessly transits.The backing layer of different materials, reduction can be selected to wash away stopper head at different positions as needed,
With better corrosion resistance the pollution to molten steel is reduced to extend the service life of stopper.
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
The production and design problem that compound slag line design is brought.
Foregoing invention patent cannot reduce molten steel and flow into the vortex that knot device is formed by stopper surrounding, to not be avoided that whirlpool
Stream is involved in slag, it cannot be guaranteed that flowing into the cleanliness factor of molten steel in mold；Also the slag line of stopper is easy by slag corrosion simultaneously,
Service life is shorter.
5, application No. is 201010513576.X, patent name is《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 above structure can prevent to form turbine substitution slag at caput,
It is that effect is poor, it cannot be guaranteed that the cleanliness factor 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, the advantages of being not easy to be 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 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.
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 alundum (Al2O3) contributes to clean steel continuous casting.
10, application No. is 201210553827.6 Chinese invention patents to disclose a kind of composite monolithic stopper rod and its making
Method, the composite monolithic stopper rod include caput, changeover portion and stick body, and caput uses magnesium carbon materials matter, stick body to use aluminium carbon materials matter, stick
Changeover portion between head and stick body uses spinelle carbon materials matter, this composite monolithic stopper rod to avoid conventional transition material using process
In due to react generate spinelle and generate volume expansion, eventually lead to caput fracture the phenomenon that.
11, application No. is 201610040164.6 Chinese invention patent, to disclose a kind of corundum, mullite integrated poured
Stopper, meet continuous casting requirement.
Above-mentioned Chinese invention patent 6-11 is by changing the manufacture material of stopper, to avoid the fracture of stopper, improve
Anti- molten steel wash away with aggressivity, improve stopper service life or improve Cleanliness of Molten Steel, but material used by said program
The complex process of material processing stopper, cost are higher.
Invention content
The technical problem to be solved by the present invention is to：Stopper corrosion resistance can be improved by providing one kind, and extending stopper makes
With the continuous casting stopper rod with ventilative ring in service life.
The technical solution adopted by the present invention to solve the technical problems is：Continuous casting stopper rod with ventilative ring, including stick body,
Stick body one end is free end, and the other end is provided with caput；There is slag line with the stick；It is provided with the stick ventilative
Ring, the ventilative ring are round platform, and the smaller one end of ventilative ring bottom surface radius is located at the lower section of the larger one end of bottom surface radius；It is ventilative
Radius smaller one end in ring bottom surface is concordant with the initial position of slag line；
It is provided with gas-permeable channels in the ventilative ring；The gas-permeable channels include vertical air inlet pipe, annulus snorkel；It is described
Vertical air inlet pipe one end is extended in ventilative ring by ventilative ring upper bottom surface and is connected to annulus snorkel；The stick body is logical positioned at annulus
In the annulus of tracheae, the annulus snorkel and stick body are coaxial, and are provided on the circular ring shape tracheae and are circumferentially uniformly distributed
Branch pipe, the branch pipe radially extends, and described branch pipe one end is connected to annulus snorkel, and the other end is provided with connection branch pipe
Flat burner；The flat burner is open with strip, and the central axes of stick body are open perpendicular to flat burner strip
Length direction；The flat burner is located in ventilative ring；
Ventilative ring be made of the component of following parts by weight：
Al2O364~88 parts,
2~4 parts of ZrC, B40~1 part of C,
10~12 parts of graphite,
1~2 part of Al powder,
4~8 parts of resin.
Preferably, the Al2O3Group become：
Grain size is less than or equal to 3mm, and the Al more than 1mm2O34~8 parts,
Grain size is less than or equal to 1mm, and the Al more than or equal to 0.074mm2O335~45 parts,
Grain size is less than the Al of 0.074mm2O325~35 parts.
Preferably, the width of the strip opening of the flat burner is 0.5~1.0mm.
Further, the angle between two neighboring branch pipe axis is 10~20 °.
Preferably, the radius of stick body free end is less than the radius of the stick body other end, stick body free end and stick body
The junction of two one end forms boss, and the ventilative ring set is located on the free end of stick body on boss；The ventilative ring
Sealing ring is provided on the bottom surface being located above, the ventilative gap between ring and stick body outer surface of the sealing ring sealing is described
It is identical that the annular radii that annulus snorkel axis surrounds and stick are relatively large in diameter the diameter of one end with it.
Preferably, the radius of stick body free end is 0.6R, and the radius of the other end is R, the ventilative ring have two
The larger bottom surface of radius is upper bottom surface in a bottom surface, and the smaller bottom surface of radius is bottom surface；The bottom radius surface of the ventilative ring
Upper bottom surface radius for 1.5R, the ventilative ring is 2R.
Preferably, the length of the branch pipe is 0.2~0.3R.
Preferably, the sealing ring is formed using aluminium oxide pouring.
Preferably, the height of the ventilative ring is 200~300mm.
The beneficial effects of the invention are as follows：The continuous casting stopper rod with ventilative ring of the present invention, due to the slag line in stick body
Initial position be provided with ventilative ring, and the ventilative ring is round platform, while being provided with gas-permeable channels in ventilative ring；It is described
Gas channel includes vertical air inlet pipe, annulus snorkel；Described vertical air inlet pipe one end extends to ventilative ring by ventilative ring upper bottom surface
It is interior to be connected to annulus snorkel；The annulus snorkel and stick body are coaxial, and are provided on the circular ring shape tracheae circumferentially
The branch pipe of even distribution, the branch pipe radially extend, and the branch pipe is located in ventilative ring.Therefore in use, pass through
It is passed through inert gas to gas-permeable channels, inert gas forms air film on the outer surface of ventilative ring, to avoid slag and slag line
It is in direct contact, slag is avoided to cause to corrode to the slag line with stick, therefore the service life of stopper can be extended.Simultaneously because institute
Ventilative ring is made of the component of following parts by weight：Al2O364~88 parts, 2~4 parts of ZrC, B40~1 part of C, graphite 10~12
Part, Ti3SiC22~4 parts of 1~2 part of Al powder, 4~8 parts of resin；Therefore the corrosion resistance that ventilative ring can be improved, reduces simultaneously
Manufacturing cost.
Description of the drawings
Fig. 1 is the perspective view of the continuous casting stopper rod in the embodiment of the present invention with ventilative ring；
Fig. 2 is the front view of the continuous casting stopper rod in the embodiment of the present invention with ventilative ring；
Fig. 3 is the A-A sectional views in Fig. 2；
Fig. 4 is the B-B sectional views in Fig. 2；
Fig. 5 is the front view of branch pipe in the embodiment of the present invention；
It is indicated in figure：1- stick bodies, the free ends 11-, 2- caputs, 3- venting channels, 4- breathe freely ring, 5- annulus snorkels, 6-
Branch pipe, 61- flat burners, the vertical air inlet pipe of 7-, 8- sealing rings.
Specific implementation mode
The specific implementation mode of the present invention is described further with reference to the accompanying drawings and examples.
Embodiment one
First with white fused alumina Al2O3(being more than 97%), graphite C (being more than 97%), nano-TiO2(purity is more than 97%) and resin
For raw material, consisting of：3~1mm Al2O34~8 parts, 1~0.074mm Al2O335~45 parts,<0.074mm Al2O3 25
~35 parts, 10~20nm TiO22~5 parts, 8~12 parts of graphite, 1~3 part of antioxidant Al powder, 4~8 parts of resin.Isostatic pressed
Conventional stopper size is made in molding, 800~1200MPa of pressure so that the radius of the free end 11 of the stick body 1 of stopper is stick body 1
Then 0.6 times of the radius of the other end is processed into the cylinder that radius is stick body radius 0.6 to stick tail direction in stopper slag line,
And away from the annular groove for processing depth 3mm wide 5mm at 200~300mm of slag line starting position.By the stopper processed 500~600
It is toasted at DEG C spare.
The annulus snorkel 5 of stick body radius is made of the steel pipe of 3~5mm of internal diameter, 5 radial direction of annulus snorkel every
10~20 ° are provided with connection annulus snorkel 5, and with the matched branch pipe 6 of 5 internal diameter of annulus snorkel, 6 length of branch pipe is 0.2~
The radius of stick body lower end described in 0.3R, 5 vertical direction of annulus snorkel setting connection annulus snorkel 5, and with annulus snorkel 5
The matched vertical air inlet pipe 7 of internal diameter, connect with external Ar.Plastic sheet is inserted into the end of branch pipe 6 and extends end.
With 3~1mm of grain size Al2O34 parts, 1~0.074mm of grain size Al2O335 parts, grain size<0.074mm Al2O3 25
Part, 10 parts of graphite, 4 parts of ZrC, 1 part of Al powder, 4 parts of resin is raw material hydrostatic profile, and it is saturating that truncated cone-shaped is made in 600~800MPa of pressure
Compression ring 4, and so that the bottom radius surface of ventilative ring 4 is 1.5 times of the diameter that stick body 1 is relatively large in diameter one end, the ventilative ring 4
Upper bottom surface radius be that stick body 1 is relatively large in diameter one end 2 times of diameter.
Then it is toasted at 500~600 DEG C spare；Plastic sheet during baking in branch pipe 6 is burned off so that branch
It is ventilative by flat burner 61 and 4 surface of ventilative ring after molding that 6 end of pipe forms flat burner 61.By the ventilative ring after baking
The stick body 1 of 4 installations after baking, fills to form 8,120 DEG C of dryings of sealing ring for 24 hours, brush at annular groove with aluminium oxide pouring material
It can be used with tundish baking after antioxidant coating, adjust Ar throughputs according to actual conditions in casting process, make to melt
There are air films to be advisable with ventilative interannular for slag.
Embodiment two
First with white fused alumina (Al2O3More than 97%), graphite (C be more than 97%), nanometer (TiO297%) and resin purity is more than
For raw material, consisting of：3~1mm Al2O34~8 parts, 1~0.074mm Al2O335~45 parts,<0.074mm Al2O3 25
~35 parts, 10~20nm TiO22~5 parts, 8~12 parts of graphite, 1~3 part of antioxidant Al powder, 4~8 parts of resin.Isostatic pressed
Conventional stopper size is made in molding, 800~1200MPa of pressure so that the radius of the free end 11 of the stick body 1 of stopper is stick body 1
Then 0.6 times of the radius of the other end is processed into the cylinder that radius is stick body radius 0.6 to stick tail direction in stopper slag line,
And away from the annular groove for processing depth 3mm wide 5mm at 200~300mm of slag line starting position.By the stopper processed 500~600
It is toasted at DEG C spare.
The annulus snorkel 5 of stick body radius is made of the steel pipe of 3~5mm of internal diameter, 5 radial direction of annulus snorkel every
10~20 ° are provided with connection annulus snorkel 5, and with the matched branch pipe 6 of 5 internal diameter of annulus snorkel, 6 length of branch pipe is 0.2~
The radius of stick body lower end described in 0.3R, 5 vertical direction of annulus snorkel setting connection annulus snorkel 5, and with annulus snorkel 5
The matched vertical air inlet pipe 7 of internal diameter, connect with external Ar.Plastic sheet is inserted into the end of branch pipe 6 and extends end.
With 3~1mm of grain size Al2O36 parts, 1~0.074mm of grain size Al2O340 parts, grain size<0.074mm Al2O3 30
Part, 11 parts of graphite, 3 parts of ZrC, B40.5 part of C, 1.5 parts of Al powder, 6 parts of resin are raw material hydrostatic profile, 600~800MPa of pressure
The ventilative ring 4 of truncated cone-shaped is made, and so that the bottom radius surface of ventilative ring 4 is the 1.5 of the diameter that stick body 1 is relatively large in diameter one end
Times, the upper bottom surface radius of the ventilative ring 4 is 2 times of the diameter that stick body 1 is relatively large in diameter one end.
Then it is toasted at 500~600 DEG C spare；Plastic sheet during baking in branch pipe 6 is burned off so that branch
It is ventilative by flat burner 61 and 4 surface of ventilative ring after molding that 6 end of pipe forms flat burner 61.By the ventilative ring after baking
The stick body 1 of 4 installations after baking, fills to form 8,120 DEG C of dryings of sealing ring for 24 hours, brush at annular groove with aluminium oxide pouring material
It can be used with tundish baking after antioxidant coating, adjust Ar throughputs according to actual conditions in casting process, make to melt
There are air films to be advisable with ventilative interannular for slag.
Embodiment three
First with white fused alumina (Al2O3More than 97%), graphite (C be more than 97%), nano-TiO2(purity is more than 97%) and resin
For raw material, consisting of：3~1mm Al2O34~8 parts, 1~0.074mm Al2O335~45 parts,<0.074mm Al2O3 25
~35 parts, 10~20nm TiO22~5 parts, 8~12 parts of graphite, 1~3 part of antioxidant Al powder, 4~8 parts of resin.Isostatic pressed
Conventional stopper size is made in molding, 800~1200MPa of pressure so that the radius of the free end 11 of the stick body 1 of stopper is stick body 1
Then 0.6 times of the radius of the other end is processed into the cylinder that radius is stick body radius 0.6 to stick tail direction in stopper slag line,
And away from the annular groove for processing depth 3mm wide 5mm at 200~300mm of slag line starting position.By the stopper processed 500~600
It is toasted at DEG C spare.
The annulus snorkel 5 of stick body radius is made of the steel pipe of 3~5mm of internal diameter, 5 radial direction of annulus snorkel every
10~20 ° are provided with connection annulus snorkel 5, and with the matched branch pipe 6 of 5 internal diameter of annulus snorkel, 6 length of branch pipe is 0.2~
The radius of stick body lower end described in 0.3R, 5 vertical direction of annulus snorkel setting connection annulus snorkel 5, and with annulus snorkel 5
The matched vertical air inlet pipe 7 of internal diameter, connect with external Ar.Plastic sheet is inserted into the end of branch pipe 6 and extends end.
With 3~1mm of grain size Al2O38 parts, 1~0.074mm of grain size Al2O345 parts, grain size<0.074mm Al2O3 35
Part, 12 parts of graphite, 2 parts of ZrC, B41 part of C, 2 parts of Al powder, 8 parts of resin is raw material hydrostatic profile, and 600~800MPa of pressure is made
Truncated cone-shaped is breathed freely ring 4, and the bottom radius surface of ventilative ring 4 is made to be relatively large in diameter 1.5 times of the diameter of one end, institute for stick body 1
The upper bottom surface radius for stating ventilative ring 4 is 2 times of the diameter that stick body 1 is relatively large in diameter one end.
Then it is toasted at 500~600 DEG C spare；Plastic sheet during baking in branch pipe 6 is burned off so that branch
It is ventilative by flat burner 61 and 4 surface of ventilative ring after molding that 6 end of pipe forms flat burner 61.By the ventilative ring after baking
The stick body 1 of 4 installations after baking, fills to form 8,120 DEG C of dryings of sealing ring for 24 hours, brush at annular groove with aluminium oxide pouring material
It can be used with tundish baking after antioxidant coating, adjust Ar throughputs according to actual conditions in casting process, make to melt
There are air films to be advisable with ventilative interannular for slag.
The ventilative ring 4 known to above-described embodiment is made of the component of following parts by weight：Al2O364~88 parts, graphite
10~12 parts, 2~4 parts of ZrC, B40~1 part of C, Ti3SiC22~4 parts of 1~2 part of Al powder, 4~8 parts of resin.It can meet plug
The requirement of stick continuous casting has stronger corrosion resistance, while manufacturing cost is relatively low.
As shown in Figures 1 to 5, the continuous casting stopper rod with ventilative ring of the present invention, including stick body 1, the stick body 1 one
End is free end, and the other end is provided with caput 2；There is slag line on the stick body 1；Ventilative ring 4, institute are provided on the stick body 1
It is round platform to state ventilative ring 4, and the smaller one end of 4 bottom surface radius of ventilative ring is located at the lower section of the larger one end of bottom surface radius；Ventilative ring 4
Radius smaller one end in bottom surface is concordant with the initial position of slag line；
It is provided with gas-permeable channels in the ventilative ring 4；The gas-permeable channels include vertical air inlet pipe 7, annulus snorkel 5；
Described 7 one end of vertical air inlet pipe is extended in ventilative ring 4 by ventilative 4 upper bottom surface of ring and is connected to annulus snorkel 5；The stick body 1
In the annulus of annulus snorkel 5, the annulus snorkel 5 is coaxial with stick body 1, and is provided on the circular ring shape tracheae 5
Circumferentially equally distributed branch pipe 6, the branch pipe 6 radially extend, while 6 one end of the branch pipe is connected to annulus snorkel 5,
The other end is provided with the flat burner 61 of connection branch pipe 6；The flat burner 61 is open with strip, and the axis of stick body 1
The length direction that line is open perpendicular to 61 strip of flat burner；The flat burner 61 is located in ventilative ring 4.
During use, it is passed through argon gas by the venting channels being arranged in stick body 1, molten steel is by 1 surrounding caput 2 of stick body
Flowing, is then flowed into crystallizer.Inert gas, such as argon gas are passed through into vertical air inlet pipe 7 simultaneously.Due to described ventilative
It is provided with gas-permeable channels in ring 4；The gas-permeable channels include vertical air inlet pipe 7, annulus snorkel 5；The vertical air inlet pipe 7 one
End is extended in ventilative ring 4 by ventilative 4 upper bottom surface of ring and is connected to annulus snorkel 5；The annulus snorkel 5 is coaxial with stick body 1,
And it is provided with circumferentially equally distributed branch pipe 6 on the circular ring shape tracheae 5, the branch pipe 6 radially extends, and the branch pipe
6 one end are connected to annulus snorkel 5, and the other end is provided with the flat burner 61 of connection branch pipe 6；The flat burner 61 has length
Strip gab, and the length direction that the central axes of stick body 1 are open perpendicular to 61 strip of flat burner；61, the flat burner
In in ventilative ring 4.Therefore inert gas is when being transported to the outer surface of ventilative ring 4 by flat burner 61, the inertia that can be
Gas is uniformly transported to the outer surface of ventilative ring 4, and the outer surface of ring 4 is spread so that inert gas is seriously breathed freely, simultaneously
Since flat burner 61 is open with strip, can increase inert gas the outer surface of ventilative ring 4 diffusion area.
Continuous complete air film is formed so as to ensure inert gas between molten steel and the outer surface of ventilative ring 4.Simultaneously because
The smaller one end of 4 bottom surface radius of ventilative ring is located at the lower section of the larger one end of bottom surface radius；Therefore inert gas is flowing up
During contacted always with the outer surface of ventilative ring 4 so that inert gas is between the outer surface and molten steel of ventilative ring 4
Form one layer of air film.
The smaller one end of 4 bottom surface radius of ventilative ring is concordant with the initial position of slag line simultaneously；Therefore can avoid slag with
Slag line on stick body 1 is in direct contact, and so as to reduce erosion of the slag to stick body 1, improves the service life of stopper.
In conclusion the continuous casting stopper rod with ventilative ring of the present invention, due to the initial position of the slag line in stick body 1
It is provided with ventilative ring 4, and ventilative 4 rings are round platform, while gas-permeable channels are provided in ventilative ring 4；The gas-permeable channels
Including vertical air inlet pipe 7, annulus snorkel 5；Described 7 one end of vertical air inlet pipe is extended to by ventilative 4 upper bottom surface of ring in ventilative ring
It is connected to annulus snorkel 5；The annulus snorkel 5 is coaxial with stick body 1, and is provided with circumferentially on the circular ring shape tracheae 5
Equally distributed branch pipe 6, the branch pipe 6 radially extend, and 6 one end of the branch pipe is connected to annulus snorkel, and the other end is set
It is equipped with the flat burner 61 of connection branch pipe；The flat burner 61 is open with strip, and the central axes of stick body 1 are perpendicular to flat
The length direction of 61 strip of flat nozzle opening；The flat burner 61 is located in ventilative ring.Therefore in use, pass through
It is passed through inert gas to gas-permeable channels, the outer surface of ventilative ring can be completely covered in inert gas, and in slag and ventilative ring
Outer surface between formed continuous, completely, fine and close air film avoids slag to avoid slag from being in direct contact with slag line
Slag line with stick is caused to corrode, therefore the service life of stopper can be extended.
Specifically as shown in Fig. 2, models and application of the wherein starting altitude H of slag line according to different manufacturers using stopper
Requirement sets itself of the production environment to slag line height.
In order to enable inert gas reaches when breathing freely 4 outer surface of ring, fine and close air film can be formed, it is further, adjacent
Angle between two 6 axis of branch pipe is 10~20 °.Since inert gas is transported to 4 outer surface of ventilative ring by branch pipe 6, because
The angle of this 6 axis of two neighboring branch pipe be 10~20 ° can ensure two neighboring branch pipe 6 convey gases can be full of it is adjacent
Region of two branch pipes 6 between ventilative 4 outer surface of ring, so as to ensure that ventilative 4 outer surface of ring is formed continuously, completely
, fine and close air film.
The ventilative ring 4 may be used various ways and be provided on stick body 1, for example pass through interference fit, or welding.For
Ensure the stability of structure, while convenient for the replacement to ring 4 of breathing freely, it is preferred that the radius of 1 free end of stick body is less than stick
The junction of the radius of 1 other end of body, 1 free end of stick body and 1 liang of one end of stick body forms boss, and the ventilative ring 4 is set with
On the free end of stick body 1, and on boss；Sealing ring 8 is provided on the bottom surface that the ventilative ring 4 is located above, it is described
Gap between ventilative 1 outer surface of ring 4 and stick body of the sealing of sealing ring 8；Annular radii that 5 axis of annulus snorkel surrounds with
The diameter that one end is relatively large in diameter on stick body 1 is identical.
Following manner setting may be used in specific sealing ring 8, at the height for ring 4 of breathing freely away from slag line starting position distance
The annular groove for processing depth 3mm wide 5mm, fills to form sealing ring 8 at annular groove with aluminium oxide pouring material.
When further, in order to ensure that inert gas is transported to ventilative 4 outer surface of ring by flat burner 61, diffusion area compared with
Greatly, the width of the strip opening of the flat burner 61 is 0.5~1.0mm.
In order to ensure that slag can not be in direct contact with stick body 1, while the manufacture material for ring 4 of breathing freely is saved, in another reality
Apply in example, specifically, the radius of 1 free end of stick body is 0.6R, the radius of the other end is R, the ventilative ring 4 have two
The larger bottom surface of radius is upper bottom surface in a bottom surface, and the smaller bottom surface of radius is bottom surface；The bottom radius surface of the ventilative ring 4
Upper bottom surface radius for 1.5R, the ventilative ring 4 is 2R.Specifically, the length of the branch pipe 6 is 0.2~0.3R.
While can ensure that slag section can not be in direct contact with stick body 1, the manufacture material for ring of breathing freely is saved, another
In embodiment, specifically, the height of the ventilative ring 4 is 200~300mm.
Claims (9)
1. the continuous casting stopper rod with ventilative ring, including stick body (1), described stick body (1) one end are free end, the other end is provided with stick
Head (2)；There is slag line on the stick body (1)；It is characterized in that：Ventilative ring (4) is provided on the stick body (1), it is described ventilative
Ring (4) is round platform, and the smaller one end of ventilative ring (4) bottom surface radius is located at the lower section of the larger one end of bottom surface radius；Ventilative ring (4)
Radius smaller one end in bottom surface is concordant with the initial position of slag line；
It is provided with gas-permeable channels in the ventilative ring (4)；The gas-permeable channels include vertical air inlet pipe (7), annulus snorkel
(5)；Described vertical air inlet pipe (7) one end is extended to by ventilative ring (4) upper bottom surface in ventilative ring (4) to be connected with annulus snorkel (5)
It is logical；The stick body (1) is located in the annulus of annulus snorkel (5), and the annulus snorkel (5) and stick body (1) are coaxially, and described
Circumferentially equally distributed branch pipe (6) is provided on annulus snorkel (5), the branch pipe (6) radially extends, and the branch pipe
(6) one end is connected to annulus snorkel (5), and the other end is provided with the flat burner (61) of connection branch pipe (6)；The flat burner
(61) there is strip opening, and the length direction that the central axes of stick body (1) are open perpendicular to flat burner (61) strip；Institute
Flat burner (61) is stated to be located in ventilative ring (4)；
Ventilative ring (4) be made of the component of following parts by weight：
Al2O364~88 parts,
10~12 parts of graphite,
2~4 parts of ZrC, B40~1 part of C,
Ti3SiC22~4 parts of 1~2 part of Al powder,
4~8 parts of resin.
2. the continuous casting stopper rod with ventilative ring according to claim 1, it is characterised in that：The Al2O3Group become：
Grain size is less than or equal to 3mm, and the Al more than 1mm2O34~8 parts,
Grain size is less than or equal to 1mm, and the Al more than or equal to 0.074mm2O335~45 parts,
Grain size is less than the Al of 0.074mm2O325~35 parts.
3. the continuous casting stopper rod with ventilative ring according to claim 2, it is characterised in that：The length of the flat burner (61)
The width of strip gab is 0.5~1.0mm.
4. the continuous casting stopper rod with ventilative ring as claimed in claim 1,2 or 3, it is characterised in that：Two neighboring branch pipe (6) axis
Angle between line is 10~20 °.
5. the continuous casting stopper rod with ventilative ring as claimed in claim 1,2 or 3, it is characterised in that：Stick body (1) free end
Radius be less than the radius of stick body (1) other end, the junction of stick body (1) free end and (1) two one end of stick body forms convex
Platform, the ventilative ring (4) are sleeved on the free end of stick body (1), and on boss；What the ventilative ring (4) was located above
Sealing ring (8), the ventilative gap between ring (4) and stick body (1) outer surface of sealing ring (8) sealing are provided on bottom surface；Institute
It is identical as the diameter of one end is relatively large in diameter on stick body (1) to state the annular radii that annulus snorkel (5) axis surrounds.
6. the continuous casting stopper rod with ventilative ring as claimed in claim 5, it is characterised in that：The half of stick body (1) free end
Diameter is 0.6R, and the radius of the other end is R, and the larger bottom surface of radius is upper bottom surface in two bottom surfaces that the ventilative ring (4) has,
The smaller bottom surface of radius is bottom surface；The bottom radius surface of the ventilative ring (4) is 1.5R, the upper bottom surface of the ventilative ring (4)
Radius is 2R.
7. the continuous casting stopper rod with ventilative ring as claimed in claim 6, it is characterised in that：The length of the branch pipe (6) is 0.2
~0.3R.
8. the continuous casting stopper rod with ventilative ring as claimed in claim 6, it is characterised in that：The sealing ring (8) is using oxidation
Aluminium is poured into a mould to be formed.
9. the continuous casting stopper rod with ventilative ring as claimed in claim 8, it is characterised in that：The height of the ventilative ring (4) is
200~300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009500.7A CN106513653B (en) | 2016-11-16 | 2016-11-16 | Continuous casting stopper rod with ventilative ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009500.7A CN106513653B (en) | 2016-11-16 | 2016-11-16 | Continuous casting stopper rod with ventilative ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106513653A CN106513653A (en) | 2017-03-22 |
| CN106513653B true CN106513653B (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611009500.7A Active CN106513653B (en) | 2016-11-16 | 2016-11-16 | Continuous casting stopper rod with ventilative ring |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3705204B1 (en) * | 2019-03-08 | 2022-08-03 | Refractory Intellectual Property GmbH & Co. KG | A stopper rod and a method for providing a uniform gas curtain around a stopper rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3411528A (en) * | 1965-06-03 | 1968-11-19 | Yawata Iron & Steel Co | Stopper for ladle with air-cooled head |
| CN1514754A (en) * | 2001-06-08 | 2004-07-21 | ά��ά��˹����³˹����˾ | Stopper rod |
| CN101497126A (en) * | 2009-02-20 | 2009-08-05 | 山东中齐耐火材料集团有限公司 | Multi-curve flow-control integral stopper and production method |
| CN101966580A (en) * | 2010-10-29 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Adjustable stopper rod for continuous casting |
| CN203197234U (en) * | 2013-04-15 | 2013-09-18 | 维苏威高级陶瓷(苏州)有限公司 | Continuous-casting porous stopper rod |
-
2016
- 2016-11-16 CN CN201611009500.7A patent/CN106513653B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3411528A (en) * | 1965-06-03 | 1968-11-19 | Yawata Iron & Steel Co | Stopper for ladle with air-cooled head |
| CN1514754A (en) * | 2001-06-08 | 2004-07-21 | ά��ά��˹����³˹����˾ | Stopper rod |
| CN101497126A (en) * | 2009-02-20 | 2009-08-05 | 山东中齐耐火材料集团有限公司 | Multi-curve flow-control integral stopper and production method |
| CN101966580A (en) * | 2010-10-29 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Adjustable stopper rod for continuous casting |
| CN203197234U (en) * | 2013-04-15 | 2013-09-18 | 维苏威高级陶瓷(苏州)有限公司 | Continuous-casting porous stopper rod |
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| Publication number | Publication date |
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| CN106513653A (en) | 2017-03-22 |
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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. |