CN106513653A - Continuous casting stopper rod with ventilation ring - Google Patents
Continuous casting stopper rod with ventilation ring Download PDFInfo
- Publication number
- CN106513653A CN106513653A CN201611009500.7A CN201611009500A CN106513653A CN 106513653 A CN106513653 A CN 106513653A CN 201611009500 A CN201611009500 A CN 201611009500A CN 106513653 A CN106513653 A CN 106513653A
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- China
- Prior art keywords
- ring
- rod body
- ventilative ring
- parts
- ventilative
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Classifications
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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
-
- 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 a continuous casting stopper rod with a ventilation ring. Through the continuous casting stopper rod with the ventilation ring, the anti-erosion ability of the stopper rod can be improved, and the service life of the stopper rod is prolonged. The continuous casting stopper rod with the ventilation ring comprises a rod body provided with the ventilation ring, and the ventilation ring is internally provided with a ventilation channel. The ventilation channel comprises a vertical air inlet pipe and an annular ventilation pipe. One end of the vertical air inlet pipe extends into the ventilation ring to communicate with the annular ventilation pipe from the upper bottom face of the ventilation ring. The rod body is located in a circular ring of the annular ventilation pipe. The annular ventilation pipe and the rod body are coaxial. Branch pipes evenly distributed along the circumference are arranged on the annular ventilation pipe and extend in the radial direction. Flat nozzles located in the ventilation ring are arranged at ports of the branch pipes. The ventilation ring comprises, by weight, 64-88 parts of Al2O3, 2-4 parts of ZrC, 0-1 part of B4C, 10-12 parts of graphite, 1-2 parts of Al powder and 4-8 parts of resin. The continuous casting stopper rod adopting the ventilation ring is long in service life, simple in structure and low in manufacturing cost.
Description
Technical field
A kind of stopper of present invention design, 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 rod body and caput, and in rod body is provided with venting channels.Using existing stopper,
With the prolongation of casting time, slag lining and the obvious melting loss of caput appearance, the service life of stopper is directly affected, it is more unfavorable
Be stopper to molten steel carburetting, so as to affect Molten Steel Cleanliness.
For the defect of existing stopper, this area scientific research personnel is improved to existing stopper, such as：
1st, the Chinese invention patent of Application No. 201310129083.X discloses a kind of continuous casting porous stopper, by the mouth of a river
Clean out with the impurity product of stopper head contact portion, reduce molten steel bias current in the mouth of a river.
2nd, 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, the first round platform with diameter greater than described second
The diameter of round platform.Can prevent vortex from generating, improve the stability of steel stream, and then continuous casting steel machine billet quality can be improved.
3rd, 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 at least include 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 more preferable corrosion resistance, so as to extend the service life of stopper, the pollution to molten steel is reduced.
4th, the Chinese invention patent of Application No. 201110048979.6 discloses a kind of spindle-shaped integrated stopper rod, and slag line is
Spindle.By optimization design body shape, increase the thickness of slag lining, so as to extend product service life, reduce
Production and design problem that compound slag line design brings.
Foregoing invention patent can not reduce molten steel and flow into the vortex that knot device is formed by stopper surrounding, so as to cannot be avoided whirlpool
Stream is involved in slag, it is impossible to ensure to flow into the cleanliness factor of molten steel in mold；Also the slag line of stopper is easily subject to slag corrosion simultaneously,
Service life is shorter.
5th, Application No. 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 with diameter greater than second round platform of the first round platform.Can prevent vortex from generating, improve the stability of steel stream,
And then continuous casting steel machine billet quality can be improved.
As the first round platform and the second round platform are arranged at caput, therefore above caput, it is possible to create minimum vortex,
Slag in molten steel is brought in crystallizer, although said structure can prevent to form turbine substitution slag at caput, but
It is that effect is poor, it is impossible to ensure the cleanliness factor of molten steel in mold.
6th, the Chinese patent of Application No. 201110419505.8 discloses a kind of continuous casting oxide-non-oxidized substance and is combined
Integral column of sagger, as alumina-carbon material, stopper head is refractory composites, caput and rod to the rod of integral column of sagger
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 advantage infiltrated by molten steel is difficult, anti-molten steel when improving caput materials'use washes away and aggressivity.
7th, 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 withstand and wash away for a long time, corrodes, be less prone to the phenomenon such as turn around, peel off, when can meet long
Between direct casting requirement.
8th, the Chinese invention patent of Application No. CN201110415487.6 discloses a kind of continuous casting high corrosion-resistant entirety
Stopper, by the material for optimizing stopper rod body, reduces the porosity of stopper rod body, improves slag-resistant permeability, reduce alkalescence molten
Erosion of the slag to integral column of sagger rod body, improves the service life of stopper.
9th, Application No. 201110215202.4, and the patent of invention of Application No. 201110217390.4 disclose send out
With aluminium titanates, mullite, the carbon-free integral column of sagger based on alundum (Al2O3) contribute to clean steel continuous casting.
10th, 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, changeover portion and rod body, and caput adopts magnesium carbon materials matter, rod body to adopt aluminium carbon materials matter, rod
Changeover portion between head and rod body adopts spinelle carbon materials matter, this composite monolithic stopper rod to avoid conventional transition material and using process
In due to react generate spinelle and produce volumetric expansion, ultimately result in caput fracture phenomenon.
11st, to disclose a kind of corundum, mullite integrated poured for the Chinese invention patent of Application No. 201610040164.6
Stopper, meet continuous casting requirement.
Above-mentioned Chinese invention patent 6-11 passes through the manufacture material for changing stopper, so as to avoiding the fracture of stopper, improving
Anti- molten steel washes away and aggressivity, raising stopper service life or raising Cleanliness of Molten Steel, but the material adopted by such scheme
The complex process of material processing stopper, it is relatively costly.
The content of the invention
The technical problem to be solved is：One kind is provided and can improve stopper corrosion resistance, extending stopper makes
With the continuous casting stopper rod with ventilative ring in life-span.
The technical solution adopted for the present invention to solve the technical problems is：Continuous casting stopper rod with ventilative ring, including rod body,
Described rod body one end is free end, and the other end is provided with caput；There is with the rod slag line；It is provided with the rod ventilative
Ring, the ventilative ring are round platform, and less one end of ring bottom surface radius of breathing freely is located at the lower section of the larger one end of bottom surface radius；It is ventilative
Radius less one end in ring bottom surface is concordant with the original position of slag line；
Gas-permeable channels are provided with the ventilative ring；The gas-permeable channels include vertical air inlet pipe, annulus breather pipe；It is described
Vertical air inlet pipe one end is extended in ventilative ring by ventilative ring upper bottom surface and is connected with annulus breather pipe；The rod body is logical positioned at annulus
In the annulus of tracheae, the annulus breather pipe is coaxial with rod body, and is provided with the annular tracheae and is circumferentially uniformly distributed
Arm, the arm is radially extended, and described arm one end is connected with annulus breather pipe, and the other end is provided with connection arm
Flat burner；The flat burner has strip opening, and the axis of rod body perpendicular to flat burner strip opening
Length direction；The flat burner is located in ventilative ring；
Ventilative ring be made up of the component of following weight portion：
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 Al2O3Consist of：
Particle diameter is less than or equal to 3mm, and more than the Al of 1mm2O34～8 parts,
Particle diameter is less than or equal to 1mm, and more than or equal to the Al of 0.074mm2O335～45 parts,
Al of the particle diameter less than 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 arm axis is 10～20 °.
Preferably, radius of the radius of the rod body free end less than the rod body other end, the rod body free end and rod body
The junction of two one end forms boss, and the ventilative ring set is mounted on the free end of rod body, and is located on boss；The ventilative ring
Sealing ring is provided with bottom surface above, the gap that the sealing ring sealing is breathed freely between ring and rod body outer surface is described
The annular radii that annulus breather pipe axis is surrounded is identical with the diameter that one end is relatively large in diameter with rod.
Preferably, the radius of the rod body free end is 0.6R, and the radius of the other end is R, the ventilative ring have two
In individual bottom surface, the larger bottom surface of radius is upper bottom surface, and the less bottom surface of radius is bottom surface；The radius surface of going to the bottom of the ventilative ring
For 1.5R, the upper bottom surface radius of the ventilative ring is 2R.
Preferably, the length of the arm 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 invention has the beneficial effects as follows：Continuous casting stopper rod with ventilative ring of the present invention, due to the slag line in rod body
Original 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 passage includes vertical air inlet pipe, annulus breather pipe；Described vertical air inlet pipe one end extends to ventilative ring by ventilative ring upper bottom surface
It is interior to connect with annulus breather pipe；The annulus breather pipe is coaxial with rod body, and is provided with the annular tracheae circumferentially equal
The arm of even distribution, the arm are radially extended, and the arm is located in ventilative ring.Therefore in use, pass through
Inert gas is passed through to gas-permeable channels, inert gas forms air film on the outer surface of ventilative ring, so as to avoid slag and slag line
Directly contact, it is to avoid slag causes to corrode to the slag line with rod, therefore, it is possible to extend the service life of stopper.Simultaneously because institute
Ventilative ring is made up of the component of following weight portion：Al2O364～88 parts, 2～4 parts of ZrC, B40～1 part of C, graphite 10～12
Part, Ti3SiC21～2 part of 2～4 parts of Al powder, 4～8 parts of resin；Therefore, it is possible to improve the corrosion resistance of ventilative ring, while reducing
Manufacturing cost.
Description of the drawings
Fig. 1 is the perspective view of the continuous casting stopper rod with ventilative ring in the embodiment of the present invention；
Fig. 2 is the front view of the continuous casting stopper rod with ventilative ring in the embodiment of the present invention；
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 arm in the embodiment of the present invention；
Indicate in figure：1- rod bodies, 11- free ends, 2- caputs, 3- venting channels, 4- are breathed freely ring, 5- annulus breather pipes, 6-
Arm, 61- flat burners, the vertical air inlet pipe of 7-, 8- sealing rings.
Specific embodiment
With reference to the accompanying drawings and examples the specific embodiment of the present invention is described further.
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 shaping, 800～1200MPa of pressure so that the radius of the free end 11 of the rod body 1 of stopper is rod body 1
0.6 times of the radius of the other end, is then processed into the cylinder that radius is rod body radius 0.6 in stopper slag line to rod tail direction,
And the cannelure of depth 3mm width 5mm is being processed at 200～300mm of slag line starting position.By the stopper for processing 500～600
Toast at DEG C standby.
The annulus breather pipe 5 of rod body radius is made with the steel pipe of 3～5mm of internal diameter, 5 radial direction of annulus breather pipe every
10～20 ° are provided with connection annulus breather pipe 5, and the arm 6 match with 5 internal diameter of annulus breather pipe, 6 length of arm for 0.2～
The radius of rod body lower end described in 0.3R, 5 vertical direction of annulus breather pipe arrange connection annulus breather pipe 5, and with annulus breather pipe 5
The vertical air inlet pipe 7 of internal diameter matching, is connected with outside Ar.Plastic sheet is inserted into the termination of arm 6 and extends termination.
With particle diameter 3～1mm Al2O34 parts, particle diameter 1～0mm Al2O335 parts, particle diameter<0.074mm Al2O325 parts, stone
10 parts of ink, 4 parts of ZrC, 1 part of Al powder, 4 parts of resin is raw material hydrostatic profile, and 600～800MPa of pressure makes the ventilative ring of truncated cone-shaped
4, and cause 1.5 times of diameter of one end of going to the bottom radius surface and be relatively large in diameter for rod body 1 of ventilative ring 4, the ventilative ring 4 it is upper
Bottom surface radius is 2 times of the diameter that rod body 1 is relatively large in diameter one end.
Then toast standby at 500～600 DEG C；Plastic sheet during baking in arm 6 is burned off so that
6 termination of pipe forms ventilative ring 4 surface of the flat burner 61 after flat burner 61 and shaping and breathes freely.Ventilative ring after by baking
4 install rod body 1 after baking, filled to form 8,120 DEG C of sealing ring and be dried 24h with aluminium oxide pouring material, brush at cannelure
Use by toasting with tundish after ORC, adjust Ar throughput according to actual conditions in casting process, make to melt
There is air film with ventilative interannular and be advisable in 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, 1～0mm Al2O335～45 parts,<0.074mm Al2O325～35
Part, 10～20nm TiO22～5 parts, 8～12 parts of graphite, 1～3 part of antioxidant Al powder, 4～8 parts of resin.Isostatic pressing,
800～1200MPa of pressure makes conventional stopper size so that the radius of the free end 11 of the rod body 1 of stopper is 1 other end of rod body
0.6 times of radius, be then processed into the cylinder that radius is rod body radius 0.6 to rod tail direction in stopper slag line, and away from
The cannelure of depth 3mm width 5mm is processed at 200～300mm of slag line starting position.The stopper for processing is dried at 500～600 DEG C
It is roasting standby.
The annulus breather pipe 5 of rod body radius is made with the steel pipe of 3～5mm of internal diameter, 5 radial direction of annulus breather pipe every
10～20 ° are provided with connection annulus breather pipe 5, and the arm 6 match with 5 internal diameter of annulus breather pipe, 6 length of arm for 0.2～
The radius of rod body lower end described in 0.3R, 5 vertical direction of annulus breather pipe arrange connection annulus breather pipe 5, and with annulus breather pipe 5
The vertical air inlet pipe 7 of internal diameter matching, is connected with outside Ar.Plastic sheet is inserted into the termination of arm 6 and extends termination.
With particle diameter 3～1mm Al2O36 parts, particle diameter 1～0mm Al2O340 parts, particle diameter<0.074mm Al2O330 parts, stone
11 parts of ink, 3 parts of ZrC, B40.5 part of C, 1.5 parts of Al powder, 6 parts of resin is raw material hydrostatic profile, and 600～800MPa of pressure makes
Truncated cone-shaped is breathed freely ring 4, and causes 1.5 times of the diameter of one end of going to the bottom radius surface and be relatively large in diameter for rod body 1 of ventilative ring 4, institute
The upper bottom surface radius for stating ventilative ring 4 is 2 times of the diameter that rod body 1 is relatively large in diameter one end.
Then toast standby at 500～600 DEG C；Plastic sheet during baking in arm 6 is burned off so that
6 termination of pipe forms ventilative ring 4 surface of the flat burner 61 after flat burner 61 and shaping and breathes freely.Ventilative ring after by baking
4 install rod body 1 after baking, filled to form 8,120 DEG C of sealing ring and be dried 24h with aluminium oxide pouring material, brush at cannelure
Use by toasting with tundish after ORC, adjust Ar throughput according to actual conditions in casting process, make to melt
There is air film with ventilative interannular and be advisable in 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 shaping, 800～1200MPa of pressure so that the radius of the free end 11 of the rod body 1 of stopper is rod body 1
0.6 times of the radius of the other end, is then processed into the cylinder that radius is rod body radius 0.6 in stopper slag line to rod tail direction,
And the cannelure of depth 3mm width 5mm is being processed at 200～300mm of slag line starting position.By the stopper for processing 500～600
Toast at DEG C standby.
The annulus breather pipe 5 of rod body radius is made with the steel pipe of 3～5mm of internal diameter, 5 radial direction of annulus breather pipe every
10～20 ° are provided with connection annulus breather pipe 5, and the arm 6 match with 5 internal diameter of annulus breather pipe, 6 length of arm for 0.2～
The radius of rod body lower end described in 0.3R, 5 vertical direction of annulus breather pipe arrange connection annulus breather pipe 5, and with annulus breather pipe 5
The vertical air inlet pipe 7 of internal diameter matching, is connected with outside Ar.Plastic sheet is inserted into the termination of arm 6 and extends termination.
With particle diameter 3～1mm Al2O38 parts, particle diameter 1～0.074mm Al2O345 parts, particle diameter<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 makes
Truncated cone-shaped is breathed freely ring 4, and causes 1.5 times of the diameter of one end of going to the bottom radius surface and be relatively large in diameter for rod body 1 of ventilative ring 4, institute
The upper bottom surface radius for stating ventilative ring 4 is 2 times of the diameter that rod body 1 is relatively large in diameter one end.
Then toast standby at 500～600 DEG C；Plastic sheet during baking in arm 6 is burned off so that
6 termination of pipe forms ventilative ring 4 surface of the flat burner 61 after flat burner 61 and shaping and breathes freely.Ventilative ring after by baking
4 install rod body 1 after baking, filled to form 8,120 DEG C of sealing ring and be dried 24h with aluminium oxide pouring material, brush at cannelure
Use by toasting with tundish after ORC, adjust Ar throughput according to actual conditions in casting process, make to melt
There is air film with ventilative interannular and be advisable in slag.
Understand that the ventilative ring 4 is made up of the component of following weight portion by above-described embodiment：Al2O364～88 parts, graphite
10～12 parts, 2～4 parts of ZrC, B40～1 part of C, Ti3SiC21～2 part of 2～4 parts of Al powder, 4～8 parts of resin.Plug can be met
The requirement of rod continuous casting, with 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 rod body 1, the rod body 1 one
Hold as free end, the other end is provided with caput 2；There is on the rod body 1 slag line；Ventilative ring 4, institute are provided with the rod body 1
Ventilative ring 4 is stated for round platform, lower section of the less one end of 4 bottom surface radius of ring positioned at the larger one end of bottom surface radius of breathing freely；Ventilative ring 4
Radius less one end in bottom surface is concordant with the original position of slag line；
Gas-permeable channels are provided with the ventilative ring 4；The gas-permeable channels include vertical air inlet pipe 7, annulus breather pipe 5；
Described 7 one end of vertical air inlet pipe is extended to by 4 upper bottom surface of ventilative ring and is connected with annulus breather pipe 5 in ventilative ring 4；The rod body 1
In the annulus of annulus breather pipe 5, the annulus breather pipe 5 is coaxial with rod body 1, and is provided with the annular tracheae 5
Circumferentially equally distributed arm 6, the arm 6 is radially extended, while 6 one end of the arm is connected with annulus breather pipe 5,
The other end is provided with the flat burner 61 of connection arm 6；The flat burner 61 has strip opening, and the axis of rod body 1
Length direction of the line perpendicular to 61 strip opening of flat burner；The flat burner 61 is located in ventilative ring 4.
During use, argon gas is passed through by the venting channels arranged in rod body 1, molten steel is by 1 surrounding caput 2 of rod body
Flowing, is then flowed in crystallizer.Inert gas, such as argon gas are passed through into vertical air inlet pipe 7 simultaneously.Due to described ventilative
Gas-permeable channels are provided with ring 4；The gas-permeable channels include vertical air inlet pipe 7, annulus breather pipe 5；The vertical air inlet pipe 7 one
End is extended to by 4 upper bottom surface of ventilative ring and is connected with annulus breather pipe 5 in ventilative ring 4；The annulus breather pipe 5 is coaxial with rod body 1,
And circumferentially equally distributed arm 6 is provided with the annular tracheae 5, the arm 6 is radially extended, and the arm
6 one end are connected with annulus breather pipe 5, and the other end is provided with the flat burner 61 of connection arm 6；The flat burner 61 has length
Strip gab, and the axis of rod body 1 is perpendicular to the length direction of 61 strip opening of flat burner；61, the flat burner
In ventilative ring 4.Therefore inert gas is when the outer surface of ventilative ring 4 is transported to 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 spreads so that inert gas is seriously breathed freely, while
As flat burner 61 has strip opening, therefore, it is possible to increase diffusion area of the inert gas in the outer surface of ventilative ring 4.
So as to ensure that inert gas forms continuous complete air film between the outer surface of molten steel and ventilative ring 4.Simultaneously because
The less 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 being flowed up
During contact with the outer surface of ventilative ring 4 all the time so that inert gas is between the outer surface and molten steel of ventilative ring 4
Form one layer of air film.
The less one end of 4 bottom surface radius of ventilative ring is concordant with the original position of slag line simultaneously；Therefore, it is possible to avoid slag with
Slag line directly contact on rod body 1 such that it is able to reduce erosion of the slag to rod body 1, improves the service life of stopper.
In sum, the continuous casting stopper rod with ventilative ring of the present invention, due to the original position of the slag line in rod body 1
Ventilative ring 4 is provided with, and ventilative 4 rings are round platform, while gas-permeable channels are provided with ventilative ring 4；The gas-permeable channels
Including vertical air inlet pipe 7, annulus breather pipe 5；Described 7 one end of vertical air inlet pipe is extended in ventilative ring by 4 upper bottom surface of ventilative ring
Connect with annulus breather pipe 5；The annulus breather pipe 5 is coaxial with rod body 1, and is provided with circumferentially on the annular tracheae 5
Equally distributed arm 6, the arm 6 are radially extended, and 6 one end of the arm is connected with annulus breather pipe, and the other end sets
It is equipped with the flat burner 61 of connection arm；The flat burner 61 has strip opening, and the axis of rod body 1 is perpendicular to flat
The length direction of 61 strip opening of flat nozzle；The flat burner 61 is located in ventilative ring.Therefore in use, pass through
Inert gas is passed through to gas-permeable channels, inert gas can be completely covered the outer surface of ventilative ring, and in slag and ventilative ring
Outer surface between form continuous, complete, fine and close air film, so as to avoid slag and slag line directly contact, it is to avoid slag
Slag line with rod is caused to corrode, therefore, it is possible to extend the service life of stopper.
Specifically as shown in Fig. 2 the wherein starting altitude H of slag line uses model and the application of stopper according to different manufacturers
Requirement sets itself of the production environment to slag line height.
During in order that inert gas reaching ventilative 4 outer surface of ring, the air film of densification can be formed, it is further, adjacent
Angle between two 6 axis of arm is 10～20 °.As inert gas is transported to 4 outer surface of ventilative ring by arm 6, because
The angle of this 6 axis of two neighboring arm is that 10～20 ° of gases that ensure that the conveying of two neighboring arm 6 can be full of adjacent
Region of two arms 6 between 4 outer surface of ventilative ring such that it is able to ensure that ventilative 4 outer surface of ring is formed continuously, completely
, the air film of densification.
The ventilative ring 4 can be provided with rod body 1, such as by interference fit using various ways, or welding.For
Ensure the stability of structure, while being easy to the replacing to ring 4 of breathing freely, it is preferred that the radius of 1 free end of rod body is less than rod
The radius of 1 other end of body, 1 free end of rod body form boss with the junction of 1 liang of one end of rod body, and the ventilative ring 4 is set with
On the free end of rod body 1, and it is located on boss；The ventilative ring 4 is provided with sealing ring 8 on bottom surface above, described
Gap between the sealing of sealing ring 81 outer surface of ventilative ring 4 and rod body；Annular radii that 5 axis of annulus breather pipe is surrounded with
The diameter that one end is relatively large in diameter on rod body 1 is identical.
Specific sealing ring 8 can be arranged in the following ways, at the height away from the ventilative ring 4 of slag line starting position distance
The cannelure of processing depth 3mm width 5mm, is filled to form sealing ring 8 at cannelure 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 cannot be with 1 directly contact of rod body, the manufacture material of ring 4 while saving is breathed freely, in another reality
Apply in example, specifically, the radius of 1 free end of rod body is 0.6R, the radius of the other end is R, the ventilative ring 4 have two
In individual bottom surface, the larger bottom surface of radius is upper bottom surface, and the less bottom surface of radius is bottom surface；The radius surface of going to the bottom of the ventilative ring 4
For 1.5R, the upper bottom surface radius of the ventilative ring 4 is 2R.Specifically, the length of the arm 6 is 0.2～0.3R.
Ensure that slag section cannot with rod 1 directly contact of body while, save the manufacture material of ventilative ring, another
In embodiment, specifically, the height of the ventilative ring 4 is 200～300mm.
Claims (9)
1. there is the continuous casting stopper rod of ventilative ring, including rod body (1), described rod body (1) one end is free end, the other end is provided with rod
Head (2)；There is on the rod body (1) slag line；It is characterized in that：Ventilative ring (4) is provided with the rod body (1), it is described ventilative
Ring (4) is round platform, and less one end of ring (4) bottom surface radius of breathing freely is located at the lower section of the larger one end of bottom surface radius；Ventilative ring (4)
Radius less one end in bottom surface is concordant with the original position of slag line；
Gas-permeable channels are provided with the ventilative ring (4)；The gas-permeable channels include vertical air inlet pipe (7), annulus breather pipe
(5)；Described vertical air inlet pipe (7) one end is extended in ventilative ring (4) with annulus breather pipe (5) even by ventilative ring (4) upper bottom surface
It is logical；, in the annulus of annulus breather pipe (5), the annulus breather pipe (5) is coaxial and described with rod body (1) for the rod body (1)
Circumferentially equally distributed arm (6) is provided with annular tracheae (5), the arm (6) radially extends, and the arm
(6) one end is connected with annulus breather pipe (5), and the other end is provided with the flat burner (61) of connection arm (6)；The flat burner
(61) with strip opening, and the axis of rod body (1) is perpendicular to the length direction of flat burner (61) strip opening；Institute
State flat burner (61) interior positioned at ventilative ring (4)；
Ventilative ring (4) be made up of the component of following weight portion：
Al2O364～88 parts,
10～12 parts of graphite,
2～4 parts of ZrC, B40～1 part of C,
Ti3SiC21～2 part of 2～4 parts 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 Al2O3Consist of：
Particle diameter is less than or equal to 3mm, and more than the Al of 1mm2O34～8 parts,
Particle diameter is less than or equal to 1mm, and more than or equal to the Al of 0.074mm2O335～45 parts,
Al of the particle diameter less than 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 described in claim 1,2 or 3, it is characterised in that：Two neighboring arm (6) axle
Angle between line is 10～20 °.
5. the continuous casting stopper rod with ventilative ring as described in claim 1,2 or 3, it is characterised in that：Rod body (1) free end
Radius less than rod body (1) other end radius, rod body (1) free end forms convex with the junction of (1) two one end of rod body
Platform, the ventilative ring (4) are sleeved on the free end of rod body (1), and are located on boss；The ventilative ring (4) is above
Sealing ring (8), the gap that sealing ring (8) sealing is breathed freely between ring (4) and rod body (1) outer surface are provided with bottom surface；Institute
State the annular radii that annulus breather pipe (5) axis surrounds identical with the diameter that one end is relatively large in diameter on rod body (1).
6. there is the continuous casting stopper rod of ventilative ring as claimed in claim 5, it is characterised in that：The half of rod body (1) free end
Footpath is 0.6R, and the radius of the other end is R, and in two bottom surfaces that the ventilative ring (4) has, the larger bottom surface of radius is upper bottom surface,
The less bottom surface of radius is bottom surface；The radius surface of going to the bottom of the ventilative ring (4) for 1.5R, the upper bottom surface of the ventilative ring (4)
Radius is 2R.
7. there is the continuous casting stopper rod of ventilative ring as claimed in claim 6, it is characterised in that：The length of the arm (6) is 0.2
～0.3R.
8. there is the continuous casting stopper rod of 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. there is the continuous casting stopper rod of 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 true CN106513653A (en) | 2017-03-22 |
| CN106513653B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022522198A (en) * | 2019-03-08 | 2022-04-14 | リフラクトリー・インテレクチュアル・プロパティー・ゲー・エム・ベー・ハー・ウント・コ・カーゲー | A method for providing a uniform gas curtain around the stopper rod and the stopper rod. |
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| 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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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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022522198A (en) * | 2019-03-08 | 2022-04-14 | リフラクトリー・インテレクチュアル・プロパティー・ゲー・エム・ベー・ハー・ウント・コ・カーゲー | A method for providing a uniform gas curtain around the stopper rod and the stopper rod. |
| JP7239727B2 (en) | 2019-03-08 | 2023-03-14 | リフラクトリー・インテレクチュアル・プロパティー・ゲー・エム・ベー・ハー・ウント・コ・カーゲー | Stopper rod and method for providing a uniform gas curtain around the stopper rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106513653B (en) | 2018-10-09 |
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Effective date of registration: 20180824 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. |