CN209174901U - A kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting - Google Patents
A kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting Download PDFInfo
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- CN209174901U CN209174901U CN201821961101.5U CN201821961101U CN209174901U CN 209174901 U CN209174901 U CN 209174901U CN 201821961101 U CN201821961101 U CN 201821961101U CN 209174901 U CN209174901 U CN 209174901U
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Abstract
The utility model discloses a kind of steel-making continuous casting tundish upper nozzles of long-acting flow control, including ontology, ontology is hollow structure, a bowl portion is fixedly connected at the top of ontology, the inner wall in bowl portion is inlaid with embedded zirconium bowl, the radius of the radian in bowl portion is 40mm-60mm, and the inner wall in bowl portion and the hole wall of bowl portion inner hole are tangent, bowl portion diameter of bore is greater than the diameter of ontology upper body inner hole, a circular platform is arranged in the internal orifice in bowl portion, the interior circular diameter of circular platform is greater than the diameter of ontology inner hole, and the outside diameter of circular platform is less than or equal to the diameter of bowl portion inner hole, embedded zirconium bowl is the cylinder of hollow structure.It is strong to later period or casting steel grade aggressivity when using in the utility model, when stopper caput comes to a point or filling pipe end bowl portion corrodes serious, stopper caput can continue to decline, cooperate flow control with embedded zirconium bowl, the molten steel amount for flowing into tundish upper nozzle ontology inner hole in the unit time can be effectively controlled, achievees the effect that long-acting flow control.
Description
Technical field
The utility model relates to steel-making continuous casting technical field, on tundish of specially a kind of steel-making continuous casting with long-acting flow control
The mouth of a river.
Background technique
Drug on the market from serious, arrives supply and demand rebalancing, steel market in 2018 get rid of it is a large amount of inefficient and invalid
After production capacity, imbalance between supply and demand is alleviated, but local imbalance still remains.More and more iron and steel enterprises have appreciated that development
Variety steel, high-quality steel, special steel production are to improve technology content and added value of products, realize the key of sustainable development.However
Develop high-quality steel, continuous casting technology is still the mainstream of its process optimization.
Continuous casting is the important link in steelmaking process, and the molten steel that converter producing comes out needs after refining furnace refining
Molten steel is cast as to the steel billet of different type, different size.Continuous casting workshop section is exactly that the molten steel after refining is continuously cast into steel billet
Production process, capital equipment includes revolving platform, tundish, crystallizer, withdrawal straightening machine etc..Country's steel looks forward to Tundish Connection mistake at present
In journey during control enters the molten steel flow of crystallizer from intermediate packet stream, generally matched using integral column of sagger and tundish upper nozzle
The mode for closing flow control, by rising or falling for control stopper, the seam between adjusting plug club head and tundish upper nozzle the rim of a bowl
Gap, to control the steel flow velocity degree for flowing into tundish upper nozzle inner hole.When pouring common steel grade, this mode is imitated with good flow control
Fruit.
Special steel, which refers to, to be produced with special chemical component (alloying), using special technique, has special group
Knit with performance, can satisfy the steel class of special requirement.Compared with ordinary steel, special steel has higher intensity and toughness, physics
Performance, chemical property, biocompatibility and processing performance, such as superior alloy steel, automatic steel, carbon constructional quality steel.
In continuous casting of special steel production process, because of molten steel cleanliness, the influence of molten steel component, pouring temperature, especially steel grade microelement
Addition, keep molten steel even more serious to the erosion of stopper caput and tundish upper nozzle the rim of a bowl.With using the time to extend, stopper
Caput, which is washed away, to come to a point, and tundish upper nozzle the rim of a bowl radian becomes larger.When stopper caput often above mentions or declines identical height, with centre
The gap wrapped between the rim of a bowl of the mouth of a river is bigger, and the throughput of the molten steel in the unit time increases, and flow control effect is deteriorated or even out of control.
This not only constrain tundish continuously pour steel stove number, increase steel-making cost, and once can not normal flow control, molten steel will not
Controlled inflow tundish upper nozzle inner hole, into crystallizer.The molten steel poured in will burn out continuous casting machine, make
At serious production accident and security risk.
Zirconia metering nozzle using stabilizing zirconia by high-pressure molding, fire by high temperature.Sizing nozzle has refractoriness
The features such as height, thermal shock performance is good, anti-erosion, resistance to erosion, expanding variation small, long service life, it is small to be mainly used for continuous casting production
Square billet, bloom, rectangular bloom, small slab pour steel use.Domestic some refractory material enterprises, by zirconia metering nozzle technology,
It is sized to zirconium bowl according to tundish upper nozzle, and is mounted on tundish upper nozzle.This tundish for inlaying zirconium bowl
The anti-molten steel of filling pipe end and the ability washed away are improved, but due to the intensity of this zirconium bowl height, stopper caput with edge
During the tundish upper nozzle cooperation flow control of embedding zirconium bowl, under frictional force effect, stopper caput rate of decay is accelerated.Stopper stick
After head shapes serious wear, cause can not flow control the problem of.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides water on a kind of tundish of the long-acting flow control of steel-making continuous casting
Mouthful, it solves the problems, such as.
(2) technical solution
To achieve the above object, the utility model provides the following technical solutions: a kind of steel-making continuous casting is in long-acting flow control
Between wrap the mouth of a river, including ontology, the ontology is hollow structure, is fixedly connected with a bowl portion, the bowl portion at the top of the ontology
Inner wall be inlaid with embedded zirconium bowl.
It is further preferred that the radius of the radian in the bowl portion is 40mm-60mm, and the hole of the inner wall in bowl portion and bowl portion inner hole
Wall is tangent.
It is further preferred that bowl portion diameter of bore is greater than the diameter of ontology upper body inner hole.
It is further preferred that a circular platform is arranged in the internal orifice in the bowl portion, the inner circle of the circular platform is straight
Diameter is greater than the diameter of ontology inner hole, and the outside diameter of circular platform is less than or equal to the diameter of bowl portion inner hole.
It is further preferred that the embedded zirconium bowl is the cylinder of hollow structure, and embedded zirconium bowl setting is flat in circular ring shape
On platform, and the outer diameter of embedded zirconium bowl is 1.5-2.0mm smaller than the outside diameter of circular platform.
It is further preferred that the outer diameter of the embedded zirconium bowl is greater than the diameter of ontology inner hole.
It is further preferred that the rim of a bowl radius of the radian of the embedded zirconium bowl is 20mm-40mm, and the inner wall of embedded zirconium bowl with
The hole wall of embedded zirconium bowl inner hole is tangent.
It is further preferred that the diameter of the embedded zirconium bowl inner hole is less than the diameter of ontology inner hole.
It is further preferred that the height of the embedded zirconium bowl is less than bowl portion radian and the point of contact of bowl portion inner hole is flat to circular ring shape
The distance of platform.
(3) beneficial effect
The utility model provides a kind of tundish upper nozzle of long-acting flow control of steel-making continuous casting.Have following beneficial to effect
Fruit:
(1), a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting can for a long time effectively cooperate with stopper into
Row flow control, stopper caput, which does not corrode, to come to a point or when the non-Eroded in tundish upper nozzle bowl portion, can matching by caput and bowl portion
It closes to control the size of fit clearance.
(2), strong to later period or casting steel grade aggressivity when using, stopper caput comes to a point or the erosion of filling pipe end bowl portion is serious
When, stopper caput can continue to decline, and cooperate flow control with embedded zirconium bowl, this makes it possible to effectively control in the unit time to flow into
The molten steel amount of tundish upper nozzle ontology inner hole, achievees the effect that long-acting flow control, ensure that going on smoothly for safety in production.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 the utility model stopper caput and filling pipe end the rim of a bowl assembling schematic diagram.
In figure: 1 stopper caput, 2 filling pipe end the rims of a bowl, 3 bowls of portions, 4 embedded zirconium bowls, 5 ring-shaped platforms, 6 bowls of portion's inner holes, 7 embed
Zirconium bowl inner hole, 8 ontology inner holes, 9 ontologies.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figs. 1-2, the utility model provides a kind of technical solution: a kind of tundish of the long-acting flow control of steel-making continuous casting
Filling pipe end, including ontology 9, ontology 9 are hollow structure, and the top of ontology 9 is fixedly connected with bowl portion 3, and the inner wall in bowl portion 3 is inlaid with
The radius of the radian of embedded zirconium bowl 4, bowl portion 3 is 40mm-60mm, and the inner wall in bowl portion 3 and the hole wall of bowl portion inner hole 6 are tangent, bowl portion
6 diameter of inner hole is greater than the diameter of 9 upper body inner hole 8 of ontology, and a circular platform 5, circular platform is arranged in the internal orifice in bowl portion 3
5 interior circular diameter is greater than the diameter of ontology inner hole 8, and the outside diameter of circular platform 5 is less than or equal to the straight of bowl portion inner hole 6
Diameter embeds the cylinder that zirconium bowl 4 is hollow structure, and embedded zirconium bowl 4 is arranged in circular platform 5, and embedded zirconium bowl 4 is outer
Diameter is 1.5-2.0mm smaller than the outside diameter of circular platform 5, and the outer diameter for embedding zirconium bowl 4 is greater than the diameter of ontology inner hole 8, embeds
The rim of a bowl radius of the radian of zirconium bowl 4 is 20mm-40mm, and the hole wall of the inner wall and embedded zirconium bowl inner hole 7 of embedded zirconium bowl 4 is tangent, interior
The diameter of embedding zirconium bowl inner hole 7 is less than the diameter of ontology inner hole 8, and the height for embedding zirconium bowl 4 is less than 3 radian of bowl portion and bowl portion inner hole 6
Point of contact to the distance of circular platform 5, stopper caput 1, which does not corrode, to come to a point or when tundish upper nozzle bowl 3 non-Eroded of portion,
The size that fit clearance can be controlled by the cooperation in stopper caput 1 and bowl portion 3, when using to later period or casting steel grade aggressivity
By force, stopper caput 1 comes to a point or when filling pipe end bowl portion 3 corrodes serious, and stopper caput 1 can continue to decline, and match with embedded zirconium bowl 4
Flow control is closed, this makes it possible to effectively control the molten steel amount for flowing into tundish upper nozzle ontology inner hole 8 in the unit time, reaches long
The effect for imitating flow control, ensure that going on smoothly for safety in production.
Working principle: stopper caput 1, which does not corrode, to come to a point or when tundish upper nozzle bowl 3 non-Eroded of portion, can pass through stick
The cooperation in head and bowl portion 3 controls the size of fit clearance, when using to later period or strong, the stopper caput 1 that is poured steel grade aggressivity
It comes to a point or when filling pipe end bowl portion 3 corrodes serious, stopper caput 1 can continue to decline, cooperate flow control with embedded zirconium bowl 4, in this way
The molten steel amount that tundish upper nozzle ontology inner hole 8 is flowed into the unit time can effectively be controlled.
Claims (9)
1. a kind of steel-making continuous casting tundish upper nozzle of long-acting flow control, including ontology (9), the ontology (9) is hollow structure,
It is characterized by: being fixedly connected with a bowl portion (3) at the top of the ontology (9), the inner wall of the bowl portion (3) is inlaid with embedded zirconium bowl
(4).
2. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 1, it is characterised in that: described
The radius of the radian in bowl portion (3) is 40mm-60mm, and the inner wall of bowl portion (3) and the hole wall of bowl portion inner hole (6) are tangent.
3. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 2, it is characterised in that: described
Bowl portion inner hole (6) diameter is greater than the diameter of ontology (9) upper body inner hole (8).
4. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 1, it is characterised in that: described
A circular platform (5) is arranged in the internal orifice in bowl portion (3), and the interior circular diameter of the circular platform (5) is greater than ontology inner hole (8)
Diameter, and the outside diameter of circular platform (5) be less than or equal to bowl portion inner hole (6) diameter.
5. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 1, it is characterised in that: described
Embedded zirconium bowl (4) are the cylinder of hollow structure, and embedded zirconium bowl (4) are arranged on circular platform (5), and embedded zirconium bowl
(4) outer diameter is 1.5-2.0mm smaller than the outside diameter of circular platform (5).
6. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 1, it is characterised in that: described
The outer diameter of embedded zirconium bowl (4) is greater than the diameter of ontology inner hole (8).
7. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 1, it is characterised in that: described
The rim of a bowl radius of the radian of embedded zirconium bowl (4) is 20mm-40mm, and embeds the inner wall of zirconium bowl (4) and the hole of embedded zirconium bowl inner hole (7)
Wall is tangent.
8. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 7, it is characterised in that: described
The diameter of embedded zirconium bowl inner hole (7) is less than the diameter of ontology inner hole (8).
9. a kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting according to claim 1, it is characterised in that: described
The height of embedded zirconium bowl (4) is less than bowl portion (3) radian at a distance from the point of contact of bowl portion inner hole (6) to circular platform (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821961101.5U CN209174901U (en) | 2018-11-27 | 2018-11-27 | A kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821961101.5U CN209174901U (en) | 2018-11-27 | 2018-11-27 | A kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting |
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| Publication Number | Publication Date |
|---|---|
| CN209174901U true CN209174901U (en) | 2019-07-30 |
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| CN201821961101.5U Active CN209174901U (en) | 2018-11-27 | 2018-11-27 | A kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505458A (en) * | 2020-11-15 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Stopper rod flow control system control method for improving crystallizer liquid level stability |
-
2018
- 2018-11-27 CN CN201821961101.5U patent/CN209174901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505458A (en) * | 2020-11-15 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Stopper rod flow control system control method for improving crystallizer liquid level stability |
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Address after: 266200 No.1 Zhengwang Road, environmental protection industrial park, Jimo District, Qingdao City, Shandong Province Patentee after: Qingdao Zhengwang Material Co.,Ltd. Address before: 266200 No. 1, Zhengwang Road, Jimo environmental protection industrial park, Qingdao, Shandong Patentee before: QINGDAO HIWORLD MOLTEN STEEL CONTROL CO.,LTD. |