CN210498363U - Built-in immersion type water gap with anti-oxidation sealing structure - Google Patents
Built-in immersion type water gap with anti-oxidation sealing structure Download PDFInfo
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- CN210498363U CN210498363U CN201921192467.5U CN201921192467U CN210498363U CN 210498363 U CN210498363 U CN 210498363U CN 201921192467 U CN201921192467 U CN 201921192467U CN 210498363 U CN210498363 U CN 210498363U
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Abstract
The utility model relates to the technical field of continuous casting, and discloses an internally-installed submersed nozzle with an anti-oxidation sealing structure, which comprises a nozzle body, wherein the nozzle is formed by combining a nozzle bowl part, a nozzle neck part and a nozzle lower part which are sequentially arranged along the length direction of the nozzle body; the sealing structure layer is of a composite layer structure, the composite layer comprises a sealing layer and a plastic bonding layer, and the sealing layer is in contact with the anti-oxidation layer. The utility model has the advantages of through setting up double-deck seal structure layer and adding the three layer construction in intermediate level's anti-oxidation seal structure, not only guaranteed immersion nozzle's anti-oxidation, guaranteed the leakproofness between middle package and the immersion nozzle simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the continuous casting, specifically be an interior built-in immersion nozzle with anti-oxidation seal structure.
Background
The continuous casting is short for continuous casting steel, and the continuous casting process comprises the steps of conveying a ladle filled with refined molten steel to a rotary table, pouring the molten steel into a tundish after the rotary table rotates to a pouring position, and distributing the molten steel into each crystallizer through a water gap in the tundish to be applied in industry. Among them, when molten steel in a tundish is distributed to each mold, a submerged nozzle is required as a transfer passage to transfer the molten steel. Due to the limitation of pouring conditions, the sheet billet submerged nozzle cannot be used for quick replacement of the nozzle, and only a mode of internally installing the submerged nozzle can be used.
However, when the technical scheme is used, the anti-oxidation device is made of metal or ceramic, so that although the anti-oxidation device has an anti-oxidation effect, the anti-oxidation device has high hardness, and due to the thickness of the anti-oxidation device, the sealing performance between the whole submerged nozzle and the tundish is deteriorated, secondary oxidation, nitrogen increase and the like of molten steel occur in the casting process, so that the quality of the molten steel is seriously influenced, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The leakproofness of anti-oxidation device self to current immersion nozzle is relatively poor, leads to middle package and immersion nozzle's leakproofness variation and influences the technical problem of the quality after the molten steel casting, the utility model provides an interior built-in immersion nozzle with anti-oxidation seal structure, it has the anti-oxidation seal structure through setting up double-deck seal structure layer and the three layer construction in middle level, has not only guaranteed immersion nozzle's anti-oxidation, has guaranteed the advantage of middle package and immersion nozzle leakproofness simultaneously.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the inner-installed submersed nozzle with the anti-oxidation sealing structure comprises a nozzle body, wherein the nozzle body is formed by combining a nozzle bowl part, a nozzle neck part and a nozzle lower part which are sequentially arranged along the length direction of the nozzle body;
the sealing structure layer is of a composite layer structure, the composite layer comprises a sealing layer and a plastic bonding layer, and the sealing layer is in contact with the anti-oxidation layer.
Through the technical scheme, the arrangement of the anti-oxidation layer can play an anti-oxidation role on the submerged nozzle, can effectively prevent the oxidation phenomenon of the neck of the nozzle, the outer layer and the inner layer are respectively arranged into the sealing structure layers, not only can the sealing performance between the tundish and the anti-oxidation sealing structure be ensured, but also the sealing performance between the submerged nozzle and the anti-oxidation sealing structure can be ensured, the sealing performance between the submerged nozzle and the tundish can be ensured with double effects, meanwhile, the plastic bonding layers which are respectively contacted with the tundish and the submerged nozzle are arranged in the sealing structure layers, the defects on the tundish and the submerged nozzle can be filled by utilizing the plasticity of the plastic bonding layers, meanwhile, the plastic bonding layers can be adsorbed on the tundish and the submerged nozzle, the sealing effect and the stability after sealing are enhanced, in order to sum, the whole sealing piece not only has the anti-oxidation performance, but also has the sealing, the conditions of secondary oxidation and nitrogen increase are effectively generated during the casting of the steel molten steel, and the casting quality of the molten steel is ensured.
Furthermore, the anti-oxidation sealing structure is wrapped on the neck of the water gap in a manner that one end of the anti-oxidation sealing structure extends and wraps towards the direction of the bowl of the water gap, and the other end of the anti-oxidation sealing structure extends and wraps towards the direction of the lower part of the water gap.
Through the technical scheme, the wrapping mode ensures that the anti-oxidation sealing structure can effectively play the anti-oxidation effect and the sealing effect at the transition joint of the tundish and the nozzle neck.
Furthermore, both ends of the outer layer extend along the length direction of the nozzle body, and the length of the outer layer is greater than the lengths of the intermediate layer and the inner layer;
the intermediate layer is of a length corresponding to the inner layer.
Through the technical scheme, the sealing performance of the connecting part of the port of the anti-oxidation sealing structure and the tundish can be ensured by the extending arrangement of the outer layer.
Further, the material of the oxidation prevention layer is metal or ceramic.
Through the technical scheme, the metal or the ceramic can effectively play a role in blocking the permeated moisture on the tundish, so that the immersion type water gap is effectively prevented from being oxidized.
Further, the sealing layer is made of a ceramic fiber blanket.
Through the technical scheme, the ceramic fiber blanket not only can play a role in sealing, but also can play a role in absorbing water once when the water on the tundish reaches the anti-oxidation layer, so that the effect of preventing the water from entering is improved, and the anti-oxidation effect is enhanced.
Further, the plastic bonding layer is made of aluminum sol.
Through above-mentioned technical scheme, but the defect on package and the immersion nozzle lateral wall in the middle of can filling according to actual conditions of alumina sol's mobility to strengthened the sealed effect of whole sealing structure layer, simultaneously alumina sol's adsorbability is adsorbable on the lateral wall of package and immersion nozzle in the middle of, has strengthened the stability after whole anti-oxidation seal structure installs, helps keeping sealed effect.
Further, the thickness of the outer layer and the thickness of the inner layer are both between 0.1 and 0.2 mm.
Further, the thickness of the intermediate layer is not more than 0.8 mm.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the anti-oxidation sealing structure of the three-layer structure comprises an outer layer, a middle layer and an inner layer, wherein the middle layer is an anti-oxidation layer, the outer layer and the inner layer are both sealing structure layers, so that the oxidation phenomenon of the neck of a water gap can be effectively prevented, meanwhile, the sealing performance between the anti-oxidation sealing structure and a tundish can be ensured, and the sealing performance between the anti-oxidation sealing structure and an immersion water gap can be ensured;
2. install anti-oxidation seal structure on the immersion nozzle through the mode that sets up the outer parcel that extends of mouth of a river neck, guaranteed the sealed effect of anti-oxidation seal structure and middle package and immersion nozzle port transition department, further guaranteed the quality of molten steel casting.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a layer structure schematic diagram of the anti-oxidation sealing structure of the utility model.
The labels in the figure are: 1. a nozzle body; 11. a water gap bowl part; 12. a nozzle neck; 13. the lower part of the water gap; 2. an anti-oxidation sealing structure; 21. an outer layer; 22. an intermediate layer; 23. an inner layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1-2, an internally installed submerged nozzle with an anti-oxidation sealing structure comprises a nozzle body 1, wherein the nozzle is formed by combining a nozzle bowl 11, a nozzle neck 12 and a nozzle lower part 13 which are sequentially arranged along the length direction of the nozzle body, the internally installed submerged nozzle also comprises an anti-oxidation sealing structure 2, the anti-oxidation sealing structure 2 is wrapped on the inner side wall of the nozzle neck 12, the anti-oxidation sealing structure 2 is a three-layer structure formed by combining an outer layer 21, a middle layer 22 and an inner layer 23, the outer layer 21 and the inner layer 23 are sealing structure layers, and the middle layer 22 is an anti-oxidation; the sealing structure layer is of a composite layer structure, the composite layer comprises a sealing layer and a plastic bonding layer, and the sealing layer is in contact with the anti-oxidation layer. Thus, the anti-oxidation layer can play a role of anti-oxidation to the submerged nozzle, can effectively prevent the oxidation phenomenon of the nozzle neck 12, the outer layer 21 and the inner layer 23 are both set as sealing structure layers, which can not only ensure the sealing performance between the tundish and the anti-oxidation sealing structure 2, but also ensure the sealing performance between the submerged nozzle and the anti-oxidation sealing structure 2, and ensure the sealing performance between the submerged nozzle and the tundish with double effects, meanwhile, the plastic bonding layers which are respectively contacted with the tundish and the submerged nozzle are arranged in the sealing structure layers, which not only can utilize the plasticity to fill the defects on the tundish and the submerged nozzle, but also can be adsorbed on the tundish and the submerged nozzle, thereby enhancing the sealing effect and the stability after sealing, and in sum, the whole sealing piece not only has anti-oxidation performance, but also has sealing performance, and good sealing effect, and effectively prevents the submerged nozzle from being oxidized, the conditions of secondary oxidation and nitrogen increase are effectively generated during the casting of the steel molten steel, and the casting quality of the molten steel is ensured.
The anti-oxidation sealing structure 2 is wrapped on the nozzle neck 12 in a manner that one end of the anti-oxidation sealing structure 2 extends and wraps towards the direction of the nozzle bowl 11, and the other end of the anti-oxidation sealing structure 2 extends and wraps towards the direction of the nozzle lower part 13. Therefore, the wrapping mode ensures that the anti-oxidation sealing structure 2 can also effectively play the roles of anti-oxidation and sealing at the transition joint of the tundish and the nozzle neck 12.
Both ends of the outer layer 21 extend along the length direction of the nozzle body 1, and the length of the outer layer 21 is greater than the lengths of the middle layer 22 and the inner layer 23; the intermediate layer 22 corresponds to the length of the inner layer 23. Thus, the extending arrangement of the outer layer 21 can ensure the sealing performance of the connecting part of the port of the anti-oxidation sealing structure 2 and the tundish.
The material of the anti-oxidation layer is metal or ceramic. Therefore, the metal or the ceramic can effectively block the water permeating in the tundish, so that the immersion nozzle is effectively prevented from being oxidized.
The sealing layer is made of ceramic fiber blanket. Therefore, the ceramic fiber blanket not only can play a role in sealing, but also can play a role in absorbing water once when the moisture on the tundish reaches the anti-oxidation layer, so that the effect of preventing the moisture from entering is improved, and the anti-oxidation effect is enhanced.
The plastic bonding layer is made of aluminum sol. Preferably, the alumina sol is set to be semitransparent or transparent thick colloid with the pH value more than 4, so that the flowability of the alumina sol can fill the defects on the side walls of the tundish and the submerged nozzle according to the actual situation, the sealing effect of the whole sealing structure layer is enhanced, meanwhile, the adsorbability of the alumina sol can be adsorbed on the side walls of the tundish and the submerged nozzle, the stability of the whole anti-oxidation sealing structure 2 after installation is enhanced, and the sealing effect is kept.
The thickness of the outer layer 21 and the inner layer 23 is between 0.1 mm and 0.2 mm. The thickness of the intermediate layer 22 is not more than 0.8 mm. Thus, the excessive thickness of the whole anti-oxidation sealing structure 2 can be prevented to cause the overlarge distance between the tundish and the submerged nozzle, and the influence of the overlarge distance on the sealing performance between the tundish and the submerged nozzle can be prevented.
The utility model discloses a concrete implementation principle: when the submerged nozzle is installed, firstly, the anti-oxidation sealing structure 2 is installed outside the submerged nozzle, so that the inner layer 23 is tightly attached to the outer side wall of the upper nozzle neck 12 of the submerged nozzle, then, the submerged nozzle with the anti-oxidation sealing structure 2 installed is installed on a tundish, wherein the nozzle neck 12 is contacted with the tundish, and the outer layer 21 on the anti-oxidation sealing structure 2 is contacted with the tundish to complete installation, when molten steel is cast, the anti-oxidation layer is arranged to play an anti-oxidation role on the submerged nozzle, so that the oxidation phenomenon of the nozzle neck 12 can be effectively prevented, the outer layer 21 and the inner layer 23 are both arranged into sealing structure layers, so that the sealing performance between the tundish and the anti-oxidation sealing structure 2 can be ensured, the sealing performance between the submerged nozzle and the anti-oxidation sealing structure 2 can be ensured, and the sealing performance between the submerged nozzle and, set up the plasticity tie coat that contacts in middle package and immersion nozzle respectively in sealed structural layer simultaneously, not only usable its plasticity is filled the defect on middle package and the immersion nozzle, can adsorb on middle package and immersion nozzle simultaneously, the stability after sealed effect and the sealing has been strengthened, to sum up, whole sealing member not only possesses the oxidation resistance, possess the leakproofness simultaneously, and sealed effect is good, effectively prevent the immersion nozzle from the condition of oxidation, the condition of secondary oxidation and nitrogenize appears when effective steel molten steel is cast, the quality of molten steel casting has been guaranteed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The built-in submerged nozzle with the anti-oxidation sealing structure comprises a nozzle body (1), wherein the nozzle is formed by combining a nozzle bowl part (11), a nozzle neck part (12) and a nozzle lower part (13) which are sequentially arranged along the length direction of the nozzle body, and is characterized by further comprising the anti-oxidation sealing structure (2), the anti-oxidation sealing structure (2) is wrapped on the inner side wall of the nozzle neck part (12), the anti-oxidation sealing structure (2) is of a three-layer structure formed by combining an outer layer (21), a middle layer (22) and an inner layer (23), the outer layer (21) and the inner layer (23) are sealing structure layers, and the middle layer (22) is an anti-oxidation layer;
the sealing structure layer is of a composite layer structure, the composite layer comprises a sealing layer and a plastic bonding layer, and the sealing layer is in contact with the anti-oxidation layer.
2. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: the anti-oxidation sealing structure (2) is wrapped on the nozzle neck (12) in a mode that one end of the anti-oxidation sealing structure (2) extends and wraps towards the direction of the nozzle bowl (11), and the other end of the anti-oxidation sealing structure (2) extends and wraps towards the direction of the nozzle lower part (13).
3. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: both ends of the outer layer (21) extend along the length direction of the nozzle body (1), and the length of the outer layer (21) is greater than the lengths of the middle layer (22) and the inner layer (23);
the intermediate layer (22) corresponds to the length of the inner layer (23).
4. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: the anti-oxidation layer is made of metal or ceramic.
5. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: the sealing layer is made of a ceramic fiber blanket.
6. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: the plastic bonding layer is made of alumina sol.
7. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: the thickness of the outer layer (21) and the thickness of the inner layer (23) are both between 0.1 and 0.2 mm.
8. The built-in submerged nozzle with an anti-oxidation sealing structure as set forth in claim 1, wherein: the thickness of the intermediate layer (22) is not more than 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921192467.5U CN210498363U (en) | 2019-07-26 | 2019-07-26 | Built-in immersion type water gap with anti-oxidation sealing structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921192467.5U CN210498363U (en) | 2019-07-26 | 2019-07-26 | Built-in immersion type water gap with anti-oxidation sealing structure |
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| CN210498363U true CN210498363U (en) | 2020-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075080A (en) * | 2020-10-27 | 2022-02-22 | 上海劲远高温材料有限公司 | Molding ultrahigh-temperature ceramic sealing gasket for steel-making submerged nozzle and preparation method thereof |
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2019
- 2019-07-26 CN CN201921192467.5U patent/CN210498363U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075080A (en) * | 2020-10-27 | 2022-02-22 | 上海劲远高温材料有限公司 | Molding ultrahigh-temperature ceramic sealing gasket for steel-making submerged nozzle and preparation method thereof |
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