CN207857846U - A kind of tundish upper nozzle - Google Patents
A kind of tundish upper nozzle Download PDFInfo
- Publication number
- CN207857846U CN207857846U CN201820167549.3U CN201820167549U CN207857846U CN 207857846 U CN207857846 U CN 207857846U CN 201820167549 U CN201820167549 U CN 201820167549U CN 207857846 U CN207857846 U CN 207857846U
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- wall
- upper nozzle
- tundish upper
- rim
- tundish
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Abstract
The utility model discloses a kind of tundish upper nozzles, belong to metallurgical refractory material production field.The utility model includes inner and outer wall, and inner wall includes the rim of a bowl and cylindrical cavity, and cylindrical cavity extends to tundish upper nozzle bottom from the rim of a bowl inside bottom, runs through entire tundish upper nozzle；Outer wall is wrapped in outside cylindrical cavity；The material of the inner wall is calcium zirconate.This patent aims to overcome that the susceptible to plugging problem of existing tundish upper nozzle, provides a kind of tundish upper nozzle.The utility model, which uses, is linked together the rim of a bowl position of middle water containing opening and cast inner cavity, all using the form of zirconic acid calcareous material, improve the blocking present situation of tundish upper nozzle, zirconic acid calcium material can absorb aluminate in molten steel, the calcium aluminate of zirconium oxide and low melting point is generated, zirconium oxide and calcium zirconate reaction generate cube stable phase, zirconic acid calcium material promoted further to be densified, the infiltration of molten steel and field trash is prevented to corrode so that collector nozzle is not easy to plug.
Description
Technical field
The utility model is related to metallurgical refractory material production fields, more specifically to a kind of tundish upper nozzle.
Background technology
Currently, in continuous-casting steel pouring, especially cast 321 stainless steel when, the molten steel at middle water containing opening inner wall position is easy
Generate Al2O3Equal field trashes are attached to mouth of a river inner wall, block the mouth of a river, easily lead to that continuous casting operation is unstable and strand is nonmetallic
It is mingled with, seriously affects the production efficiency of continuous casting line.It is by improving the mouth of a river in the prior art for nozzle blocking problem
Material solves, and used method and measure be as follows：One, nozzle material selects some plastics on new materials with non-infiltration, profit
It can be effectively prevented Al with their good erosion resistings, with characteristics such as the nonwetting property of slag2O3Attachment block；Two, it adopts
With the mouth of a river material for forming low melting point oxide on the interface of the mouth of a river, makes to touch between the alumina particle at interface and interface and do not have
Attractive effect controls the attachment of aluminium oxide.But two kinds of materials of above-mentioned replacement can only alleviate to a certain extent it is stifled
Phenomenon is filled in, and can not fundamentally solve blockage problem.In addition, for the ventilative block-resistant type mouth of a river, by changing mouth of a river inner wall
Material and proportioning, improve the porosity of its inner-wall material, but the raising of the inner-wall material porosity is bound to reduce its anti-molten steel
It washes away and erosiveness, to cause the reduction of its service life, or even inner wall occurs and corrode the accidents such as perforation.Therefore, a kind of
The development of tundish upper nozzle has great importance for metallurgical refractory material makes industry.
Through retrieval, existing patent formula discloses.Such as Chinese patent：Application number：200910116103.3 patent name：Point
The ventilative tundish upper nozzle of spar matter and its production method, the applying date：2009.07.08 the patent be this case applicant in
Application in 2009 is related to a kind of novel spinel permeable anti-clogging tundish upper nozzle and its production method.This spinelle
The inner wall of the ventilative tundish upper nozzle of matter is vapor-permeable type spinelle, and outer wall is common alumina-carbon material, is had between the inner walls and the outer
One gas passage, it is communicated with the gas feed hole of base upper surface.It is made by the spinelle liner of high-pressure molding by being burnt into
The control of degree makes its porosity meet the requirement of Argon, then with outer wall materials together post forming, and reserved ar gas passage.
The ventilative anti-clogging tundish upper nozzle according to said method made disclosure satisfy that Argon requirement, and spinelle liner has both Argon and prevents
Stifled, the anti-blocking and anti-molten steel of material washes away the function of erosion.But disadvantage is that this method can not fundamentally solve to block
Problem, and influence the service life at the mouth of a river.
Invention content
1. patent technical problems to be solved
This patent aims to overcome that the susceptible to plugging problem of existing tundish upper nozzle, provides water on a kind of tundish
Mouthful.The utility model, which uses, is linked together the rim of a bowl position of middle water containing opening and cast inner cavity, all using calcium zirconate material
The form of material improves the blocking present situation of tundish upper nozzle, and zirconic acid calcium material can absorb aluminate in molten steel, generates
The calcium aluminate of zirconium oxide and low melting point, zirconium oxide and calcium zirconate reaction generate cube stable phase, promote zirconic acid calcium material further
Densification prevents the infiltration of molten steel and field trash from corroding so that collector nozzle is not easy to plug.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model is：
A kind of tundish upper nozzle of the utility model, including inner and outer wall, inner wall include the rim of a bowl and cylindrical cavity,
Cylindrical cavity extends to tundish upper nozzle bottom from the rim of a bowl inside bottom, runs through entire tundish upper nozzle；Outer wall wraps up
Outside cylindrical cavity.
It is further improved as the utility model, the inside of described the rim of a bowl is gradually reduced from top to bottom, and is in circular arc
Transition is conducive to molten steel and flows into.
It is further improved as the utility model, the material of the inner wall is calcium zirconate.
It is further improved as the utility model, transition zone is provided between the rim of a bowl bottom of the inner wall and outer wall
Ⅰ。
Further improved as the utility model, the main body section of the outer wall is in cylinder, the cylinder it is outer
Diameter is identical as the rim of a bowl outer diameter.
It is further improved as the utility model, the bottom of the outer wall is provided with cylinder pedestal, the outer wall
Bottom extends outward to form cylinder pedestal, arc-shaped transition between the main body section and cylinder pedestal of outer wall, the cylinder bottom
Seat is fixed on tundish top.
It is further improved as the utility model, the outer wall bottom forms annular shape, outer wall bottom around inner wall
It is connected with transition zone II, transition zone II is transition link layer.
It is further improved as the utility model, II lower part of the transition zone is provided with slide plate face.
It is further improved as the utility model, the transition zone II and slide plate face surround inner wall and form annulus
Shape, and the cylinder pedestal of outer wall, transition zone II and the outer diameter in slide plate face are sequentially reduced, and are formed more than 70 degree and less than 90 degree
Slope can more securely be fixed with tundish.
It is further improved as the utility model, slide plate face bottom offers ventilating groove, and ventilating groove is annulus,
Concentric circles is constituted with slide plate face (5) bottom.
3. advantageous effect
Using technical solution provided by the utility model, compared with prior art, have the advantages that：
(1) a kind of tundish upper nozzle of the utility model, including inner and outer wall, inner wall include in the rim of a bowl and cylinder
Chamber runs through entire tundish upper nozzle；Outer wall is wrapped in outside cylindrical cavity；The material of inner wall is calcium zirconate.This practicality is new
Calcium zirconate material fusing point is high in type, and chemical property is stablized, and high mechanical strength, coefficient of thermal expansion is low, there is good thermal shock resistance
And mechanical property, there are good antistrip performance and stronger erosion-resisting characteristics, can effectively prevent the reduction of liquid steel temperature, together
When zirconic acid calcium material can absorb aluminate in molten steel, generate the calcium aluminate of zirconium oxide and low melting point, zirconium oxide and zirconium
Sour calcium reaction generates cube stable phase, and zirconic acid calcium material is promoted further to be densified, and the infiltration of molten steel and field trash is prevented to corrode,
So that collector nozzle is not easy to plug, while extending the service life of middle water containing opening；
(2) a kind of tundish upper nozzle of the utility model, transition zone is provided between the rim of a bowl bottom of inner wall and outer wall
Ⅰ；The outer wall bottom forms annular shape around inner wall, and outer wall bottom is connected with transition zone II.Transition zone plays a transition role, and avoids
Inner and outer wall cracks under the action of high temperature again after being in direct contact, and inner and outer wall is enable preferably to combine；
(3) a kind of tundish upper nozzle of the utility model, outer diameter and the rim of a bowl outer diameter of the main body section cylinder of outer wall
Identical, inner and outer wall combines more uniform, so that mouth of a river smooth outer surface degree is improved, in addition aluminium carbon material refractoriness is high, chemical stabilization
Good, the resistant to corrosion of property, extends the service life at the mouth of a river；
(4) a kind of tundish upper nozzle of the utility model, II lower part of transition zone are provided with slide plate face, the slide plate surface intensity
Higher, frictionally damage is smaller, and high temperature resistance corrodes；In addition smaller with the gap of intermediate parlor after the installation of the slide plate face, molten steel is not easy
Leakage；
(5) a kind of tundish upper nozzle of the utility model, slide plate face bottom offer ventilating groove, and ventilating groove is annulus,
It is passed through argon gas after being connect with tundish, forms sealing ring, less molten steel overflows, and optimizes steel quality, while also functioning to heat preservation and making
With.
Description of the drawings
Fig. 1 is a kind of Longitudinal cross section schematic of tundish upper nozzle.
Label declaration in schematic diagram：1, inner wall；2, outer wall；3, transition zone I；4, transition zone II；5, slide plate face；6, it breathes freely
Slot.
Specific implementation mode
To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Such as Fig. 1, a kind of tundish upper nozzle of the present embodiment, including inner wall 1 and outer wall 2, inner wall 1 include the rim of a bowl and cylinder
Intracoelomic cavity, cylindrical cavity extend to tundish upper nozzle bottom from the rim of a bowl inside bottom, run through entire tundish upper nozzle；Outside
Wall 2 is wrapped in outside cylindrical cavity；The inside of described the rim of a bowl is gradually reduced from top to bottom, and is in arc transition, is conducive to molten steel
It flows into；The material of the inner wall 1 is calcium zirconate.
Calcium zirconate material fusing point is high in the present embodiment, and chemical property is stablized, and high mechanical strength, coefficient of thermal expansion is low, has good
Thermal shock resistance and mechanical property, have good antistrip performance and stronger erosion-resisting characteristics, can effectively prevent steel
The reduction of coolant-temperature gage, while zirconic acid calcium material can absorb aluminate in molten steel, generate the aluminium of zirconium oxide and low melting point
Sour calcium, zirconium oxide and calcium zirconate reaction generate cube stable phase, promote zirconic acid calcium material to be further densified, prevent molten steel and folder
The infiltration of sundries is corroded so that collector nozzle is not easy to plug, while extending the service life of middle water containing opening.
Embodiment 2
Such as Fig. 1, the present embodiment is substantially the same manner as Example 1, is provided between the rim of a bowl bottom of the inner wall 1 and outer wall
Cross layer I 3.
Transition zone plays a transition role in the present embodiment, is generated under the action of high temperature again after avoiding inner and outer wall from being in direct contact
Crackle enables inner and outer wall preferably to combine.
Embodiment 3
Such as Fig. 1, the present embodiment is substantially the same manner as Example 2, and the main body section of institute's outer wall 2 is in cylinder, the cylinder
Outer diameter is identical as the rim of a bowl outer diameter；The bottom of the outer wall 2 is provided with cylinder pedestal, and the outer diameter of the cylinder pedestal is more than outer
The outer diameter of wall main body, arc-shaped transition between the main body section and cylinder pedestal of outer wall 2, the cylinder pedestal are fixed on tundish
Top.
Inner and outer wall combines more uniform in the present embodiment, and mouth of a river smooth outer surface degree is made to improve, and resistant to corrosion also extends
The service life at the mouth of a river.
Embodiment 4
Such as Fig. 1, the present embodiment is substantially the same manner as Example 1, and 2 bottom of the outer wall forms annular shape, outer wall 2 around inner wall
Bottom is connected with transition zone II 4.
Transition zone plays a transition role in the present embodiment, is generated under the action of high temperature again after avoiding inner and outer wall from being in direct contact
Crackle enables inner and outer wall preferably to combine.
Embodiment 5
Such as Fig. 1, the present embodiment is substantially the same manner as Example 4, and II 4 lower part of the transition zone is provided with slide plate face 5；The mistake
It crosses layer II 4 and slide plate face 5 and forms annular shape around inner wall, and the cylinder pedestal of outer wall 2, transition zone II 4 and slide plate face 5
Outer diameter is sequentially reduced, and is formed with the slope more than 70 degree and less than 90 degree, can more securely be fixed with tundish.
The present embodiment middle slide plate surface intensity is higher, and frictionally damage is smaller, and high temperature resistance corrodes；In addition the slide plate face installation after with
The gap of intermediate parlor is smaller, molten steel not easy to leak.
Embodiment 6
Such as Fig. 1, the present embodiment is substantially the same manner as Example 5, and 5 bottom of slide plate face offers ventilating groove 6, ventilating groove 6
For annulus, concentric circles is constituted with 5 bottom of slide plate face.
It is passed through argon gas after ventilating groove is connect with tundish in the present embodiment, forms sealing ring, less molten steel overflows, and optimizes steel
Water quality, while also functioning to insulation effect.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (10)
1. a kind of tundish upper nozzle, including inner wall (1) and outer wall (2), it is characterised in that：The inner wall (1) include the rim of a bowl and
Cylindrical cavity, cylindrical cavity extend to tundish upper nozzle bottom from the rim of a bowl inside bottom, through water on entire tundish
Mouthful；The outer wall (2) is wrapped in outside cylindrical cavity.
2. a kind of tundish upper nozzle according to claim 1, it is characterised in that：The inside diameter of described the rim of a bowl from upper and
Under be gradually reduced, and be arc-shaped transition.
3. a kind of tundish upper nozzle according to claim 1 or 2, it is characterised in that：The material of the inner wall (1) is zirconium
Sour calcium.
4. a kind of tundish upper nozzle according to claim 3, it is characterised in that：The rim of a bowl bottom of the inner wall (1) with
Outer wall is provided with transition zone I (3) between (2).
5. a kind of tundish upper nozzle according to claim 4, it is characterised in that：The main body section of the outer wall (2) is in
The outer diameter of cylinder, cylinder is identical as the rim of a bowl outer diameter.
6. a kind of tundish upper nozzle according to claim 5, it is characterised in that：Outer wall (2) bottom extends outwardly
Form cylinder pedestal, arc-shaped transition between the main body section and cylinder pedestal of outer wall (2).
7. a kind of tundish upper nozzle according to claim 1 or 6, it is characterised in that：Outer wall (2) bottom is around interior
Wall (1) forms ring-shaped structure, and outer wall (2) bottom is connected with transition zone II (4).
8. a kind of tundish upper nozzle according to claim 7, it is characterised in that：The transition zone II (4) lower part is arranged
There is slide plate face (5).
9. a kind of tundish upper nozzle according to claim 8, it is characterised in that：The transition zone II (4) and slide plate face
(5) it surrounds inner wall (1) and forms ring-shaped structure, and the cylinder pedestal of outer wall (2), transition zone II (4) and slide plate face (5)
Outer diameter is sequentially reduced, and forms the slope more than 70 degree and less than 90 degree.
10. a kind of tundish upper nozzle according to claim 9, it is characterised in that：Slide plate face (5) bottom offers
Ventilating groove (6), ventilating groove (6) are annulus, and concentric circles is constituted with slide plate face (5) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820167549.3U CN207857846U (en) | 2018-01-31 | 2018-01-31 | A kind of tundish upper nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820167549.3U CN207857846U (en) | 2018-01-31 | 2018-01-31 | A kind of tundish upper nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN207857846U true CN207857846U (en) | 2018-09-14 |
Family
ID=63460392
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820167549.3U Active CN207857846U (en) | 2018-01-31 | 2018-01-31 | A kind of tundish upper nozzle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054913A (en) * | 2019-12-27 | 2020-04-24 | 泰州市旺鑫耐火材料有限公司 | Zirconium bowl adds middle package mouth of a river that zirconium core combination improves life-span |
| CN111299565A (en) * | 2019-12-27 | 2020-06-19 | 泰州市旺鑫耐火材料有限公司 | Anti-oxidation high-brushing-resistance long nozzle |
| CN111618288A (en) * | 2020-06-13 | 2020-09-04 | 泰州市旺鑫耐火材料有限公司 | Laminated connection ladder steel penetration-preventing water feeding port |
| CN114682773A (en) * | 2022-04-11 | 2022-07-01 | 江苏福鑫新材料有限公司 | Tundish nozzle and preparation method thereof |
-
2018
- 2018-01-31 CN CN201820167549.3U patent/CN207857846U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054913A (en) * | 2019-12-27 | 2020-04-24 | 泰州市旺鑫耐火材料有限公司 | Zirconium bowl adds middle package mouth of a river that zirconium core combination improves life-span |
| CN111299565A (en) * | 2019-12-27 | 2020-06-19 | 泰州市旺鑫耐火材料有限公司 | Anti-oxidation high-brushing-resistance long nozzle |
| CN111618288A (en) * | 2020-06-13 | 2020-09-04 | 泰州市旺鑫耐火材料有限公司 | Laminated connection ladder steel penetration-preventing water feeding port |
| CN114682773A (en) * | 2022-04-11 | 2022-07-01 | 江苏福鑫新材料有限公司 | Tundish nozzle and preparation method thereof |
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