CN202427934U - Tundish - Google Patents
Tundish Download PDFInfo
- Publication number
- CN202427934U CN202427934U CN2011204481977U CN201120448197U CN202427934U CN 202427934 U CN202427934 U CN 202427934U CN 2011204481977 U CN2011204481977 U CN 2011204481977U CN 201120448197 U CN201120448197 U CN 201120448197U CN 202427934 U CN202427934 U CN 202427934U
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- tundish
- layer
- insulation layer
- pours
- permanent
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model discloses a tundish. The tundish comprises a shell, an insulating layer, a permanent layer, a thermal insulating layer and a working layer arranged in order from exterior to interior. According to the tundish, the thermal insulating layer of low thermal conductivity and good thermal insulation property is formed between the permanent layer and the working layer, so as to decrease the temperature of the external surface of the outer wall of the tundish under the condition of not increasing the overall wall thickness of the tundish and not decreasing the capacity of the tundish. Meanwhile, due to the thermal insulating layer, the phenomenon of adhesion between the working layer and the permanent layer occurring during the process of turning the tundish can be prevented, so as to improve the re-usage ratio of the permanent layer.
Description
Technical field
The utility model relates to a kind of tundish, more particularly, relates to the tundish that a kind of heat-insulating property has improved.
Background technology
Along with the fast development of metallurgical technology and user further raising to steel cleanliness factor, quality requirement; Tundish; Container as the liquid molten steel of last splendid attire of STEELMAKING PRODUCTION flow process; By original only develop into to have as the simple receptacle of the holder of molten steel and distributor can prevent molten steel by secondary oxidation, the impurity in the removal molten steel is with cleaning molten steel and make the reactor of metallurgical function such as molten steel microalloying.Current; People mainly concentrate on the research of tundish and how to improve on its metallurgical performance; And developed multinomial tundish metallurgy technology thereupon, mainly from increasing the tundish capacity, improve tundish structure, rational control fluid element is set, improves the Molten Steel Flow characteristic, increases the metallurgical function that aspect such as auxiliary equipment strengthens tundish.Simultaneously; The heat-insulating property of tundish to reduce the refining tapping temperature, improve slab quality, reduce the heat radiation of bag wall, improve cylinder-packing service life, optimization production technology, saving energy and reduce the cost, reducing production costs all has crucial meaning; The positive pay attention to day by day of each steel production enterprise is under existing manufacturing condition; Ladle and tundish are carried out the heat-insulating property transformation; So that stablize the temperature of molten steel in the tundish, the service life of reducing refining tapping temperature, raising slab quality, prolongation tundish, cut down the consumption of energy and production cost.
At present, tundish adopts shell, heat insulation layer, permanent layer, the four-layer structure of working lining or the three-decker of shell, permanent layer and working lining.Fig. 1 is the schematic sectional view of traditional tundish.As shown in Figure 1, tundish 1 comprises shell 2, heat insulation layer 3, permanent layer 4 and the working lining 6 that ecto-entad is provided with.Usually, shell 2 can be welded into by steel plate.Heat insulation layer 3 can be formed by asbestos fibre or asbestic blanket.Permanent layer 4 can be formed by aluminium matter pours, mullite pours, magnesia pours or refractory brick.The working lining 6 main magnesia pours or the calcareous pours global formation of magnesium or magnesia casting plate used are built by laying bricks or stones.
Working lining 6 and permanent layer 4 all have good corrosion-resistant property; But thermal conductivity factor is big, causes the heat loss of tundish 1 high, and the temperature of the outer surface of the outer wall of tundish 1 can reach 230 ℃-320 ℃; Thereby, shortened the service life of tundish 1 easily owing to thermal deformation damages.
In addition,, can cause the variations in temperature of tundish 1 big, be unfavorable for stable, the raising of steel and the reduction of refining tapping temperature, and worsened the work on the spot environment according to the tundish 1 of above-mentioned structure.
According to the tundish 1 of above-mentioned structure, in use, also there are working lining 6 and permanent layer 4 bondings, permanent layer 4 is fragile in turning over packet procedures, and access times are few, cause problems such as production cost increase.
The utility model content
The utility model provides a kind of tundish, at least one technical problem in the technical problems such as the outside wall temperature that existing tundish exists is high, tundish temperature changes greatly to solve, the working lining of tundish and permanent layer bonding.
According to the utility model, a kind of tundish is provided, said tundish comprises shell, heat insulation layer, permanent layer, thermal insulation layer and the working lining that ecto-entad sets gradually.
According to the utility model, heat insulation layer can be formed by asbestos fibre or asbestic blanket, and the thickness of heat insulation layer can be 8mm-20mm.
According to the utility model, permanent layer can be formed by aluminium matter pours, mullite pours or magnesia pours, and the thickness of permanent layer can be 90mm-150mm.
According to the utility model, thermal insulation layer can be formed by silica heat-insulating plate or siliceous pours, and the thickness of thermal insulation layer can be 20mm-60mm.
According to the utility model, working lining can be formed by magnesia pours or the calcareous pours of magnesium, and the thickness of working lining is 50mm-120mm.
According to the utility model, permanent layer can be formed by refractory brick, and the thickness of permanent layer can be 90mm-150mm.
According to the tundish of the utility model, owing between permanent layer and working lining, form thermal insulation layer, so can significantly improve the heat-insulating property of tundish; Reduce the heat loss of tundish; Stablize the temperature of molten steel in the tundish, correspondingly can improve slab quality, reduce the refining tapping temperature; Energy-saving and cost-reducing, improve production on-site environment.
In addition; Tundish according to the utility model; Owing between working lining and permanent layer, be formed with thermal insulation layer; The permanent layer in turning over packet procedures that causes is damaged easily so overcome that working lining in use that existing tundish exists with permanent layer bonding takes place, thus the problem in the service life of reduction tundish.
Description of drawings
Through the description of embodiment being carried out below in conjunction with accompanying drawing, these of the utility model and/or other aspects and advantage will become clear and be easier to and understand, wherein:
Fig. 1 is the schematic sectional view of traditional tundish;
Fig. 2 is the schematic sectional view according to the tundish of the utility model.
The specific embodiment
Now the embodiment to the utility model carries out detailed description, its example shown in the accompanying drawings, wherein, identical label is represented identical parts all the time.Below through embodiment being described to explain the utility model with reference to accompanying drawing.
Fig. 2 is the schematic sectional view according to the tundish of the utility model.
With reference to Fig. 2, comprise shell 2, heat insulation layer 3, permanent layer 4, thermal insulation layer 5 and the working lining 6 that ecto-entad sets gradually according to the tundish 1 of the utility model.
At first, construct heat insulation layer 3 at the inwall of shell (for example, steel shell) 2, heat insulation layer 3 can be formed by asbestic blanket, and the thickness of heat insulation layer 3 can be 8mm-20mm.Preferably, the thickness of heat insulation layer 3 is 10mm.
Alternatively, the material of heat insulation layer 3 is not limited to asbestic blanket, and heat insulation layer 3 also can be formed by other suitable heat-insulating materials, for example, is formed by asbestos fibre.
According to the utility model, owing to heat insulation layer 3 is formed by asbestos fibre or asbestic blanket, so the thermal conductivity factor of heat insulation layer 3 is little, the porosity is high.
After forming heat insulation layer 3, utilize special loose tool cast, knotting high alumina castable to form permanent layer 4.Specifically, at first, the special loose tool that will be used to make permanent layer 4 is placed on the central authorities of tundish 1, thereby at heat insulation layer 3 be used to make between the special loose tool of permanent layer 4 and form the slit with certain width.Then, high alumina castable is poured into this slit, air-dry behind ramming, remove the special loose tool that is used to make permanent layer 4, finally form permanent layer 4.The thickness of permanent layer 4 can be 90mm-150mm.Preferably, the thickness of the sidewall of permanent layer 4 can be 100mm, and the thickness of bottom impact zone can be greater than the thickness of the sidewall of permanent layer 4; Can be 130mm; The thickness of other part of bottom can be greater than the thickness of the sidewall of permanent layer 4, and less than the thickness of bottom impact zone, can be 115mm.
Alternatively, the material of permanent layer 4 is not limited to high alumina castable, and permanent layer 4 also can be formed by other suitable pours, for example, is formed by mullite pours or magnesia pours.In addition, permanent layer 4 also can be built by laying bricks or stones by refractory brick and formed.
After forming permanent layer 4 and making its drying, utilize special loose tool to tie a knot siliceous pours to form thermal insulation layer 5 through natural air drying.Specifically, at first, the special loose tool that will be used to make thermal insulation layer 5 is placed on the central authorities of tundish 1, thereby in permanent layer 4 be used to make between the special loose tool of thermal insulation layer 5 and form the slit with certain width.Then, siliceous pours is poured into this slit, air-dry behind ramming, remove the special loose tool that is used to make thermal insulation layer 5, finally form thermal insulation layer 5.The thickness of thermal insulation layer 5 can be 20mm-60mm.Preferably, the thickness of thermal insulation layer 5 can be 40mm.Certainly, the material of thermal insulation layer 5 is not limited to siliceous pours, and permanent layer 4 also can be formed by other suitable materials.
In addition, thermal insulation layer 5 also can be formed by silica heat-insulating plate.
After forming thermal insulation layer 5, the magnesia pours of tiing a knot is to form working lining 6.Specifically, at first, the special loose tool that will be used to make working lining 6 is placed on the central authorities of tundish 1, thereby thermal insulation layer 5 and being used to is made between the special loose tool of working lining 6 and formed the slit with certain width.Then, magnesia pours is poured into this slit, air-dry behind ramming, remove the special loose tool that is used to make working lining 6, finally form working lining 6.The thickness of working lining 6 can be 50mm-120mm.Preferably, the thickness of the sidewall of working lining 6 can be 50mm, and the thickness of bottom impact zone can be greater than the thickness of the sidewall of working lining 6; Can be 70mm; The thickness of other part of bottom can be greater than the thickness of the sidewall of working lining 6, and less than the thickness of bottom impact zone, can be 60mm.
Alternatively, the material of working lining 6 is not limited to magnesia pours, and working lining 6 also can be formed by other suitable pours, for example, is formed by the calcareous pours of magnesium.
After forming working lining 6, carry out natural air drying, behind the natural air drying; Subsequent use tundish 1 is winched to the big bag platform baking of continuous casting position, after the little fire baking, big fire baking about 3 hours; When temperature reaches 1000-1100 ℃, tundish 1 is moved to the cast position, the wait continuous casting is opened and is watered.So far accomplish the preparation of tundish 1.
Need to prove; Tundish according to the utility model; Compare with traditional tundish; Basically do not increasing the wall thickness of tundish and do not reducing under the situation of capacity of tundish, only the thickness of the permanent layer 4 through suitable attenuate tradition tundish and between permanent layer 4 and working lining 6, form thermal insulation layer 5.Because thermal insulation layer 5 is formed by for example silica heat-insulating plate or siliceous pours, so low, the good heat insulating of the thermal conductivity factor of thermal insulation layer 5.
In use, in 150 ℃ of-180 ℃ of scopes, be starkly lower than 230 ℃-320 ℃ of the temperature of outer surface of the outer wall of traditional tundish according to the temperature of the outer surface of the outer wall of the tundish of the utility model.Therefore; Can significantly improve the heat-insulating property of tundish according to the tundish of the utility model, reduce the heat loss of tundish, stablize the temperature of molten steel in the tundish; Correspondingly can improve slab quality; Reduce refining tapping temperature (approximately reducing by 3 ℃-5 ℃), energy-saving and cost-reducing, improve production on-site environment.
In addition; According to the tundish of the utility model owing between working lining 6 and permanent layer 4, be formed with thermal insulation layer 5; The permanent layer in turning over packet procedures 4 that causes is damaged easily so overcome that working lining in use 6 that existing tundish exists with permanent layer 4 bonding takes place, thus the problem in the service life of reduction tundish.
In addition, according to the tundish of the utility model, through between permanent layer and working lining, forming thermal insulation layer, thereby a kind of safe, practical, easy tundish is provided.
Though illustrated and described some embodiment of the utility model; But those skilled in the art should understand that; Under the situation of principle that does not break away from the utility model that limits its scope claim and equivalent thereof and spirit, can make amendment to these embodiment.
Claims (6)
1. a tundish is characterized in that, comprises shell, heat insulation layer, permanent layer, thermal insulation layer and working lining that ecto-entad sets gradually.
2. tundish according to claim 1 is characterized in that heat insulation layer is formed by asbestos fibre or asbestic blanket, and the thickness of heat insulation layer is 8mm-20mm.
3. tundish according to claim 2 is characterized in that, permanent layer is formed by aluminium matter pours, mullite pours or magnesia pours, and the thickness of permanent layer is 90mm-150mm.
4. tundish according to claim 3 is characterized in that, thermal insulation layer is formed by silica heat-insulating plate or siliceous pours, and the thickness of thermal insulation layer is 20mm-60mm.
5. tundish according to claim 4 is characterized in that, working lining is formed by magnesia pours or the calcareous pours of magnesium, and the thickness of working lining is 50mm-120mm.
6. tundish according to claim 2 is characterized in that permanent layer is formed by refractory brick, and the thickness of permanent layer is 90mm-150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204481977U CN202427934U (en) | 2011-11-14 | 2011-11-14 | Tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204481977U CN202427934U (en) | 2011-11-14 | 2011-11-14 | Tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202427934U true CN202427934U (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204481977U Expired - Fee Related CN202427934U (en) | 2011-11-14 | 2011-11-14 | Tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202427934U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909359A (en) * | 2012-10-29 | 2013-02-06 | 中钢集团邢台机械轧辊有限公司 | Ladle with seepage-proofing insulation layer and masonry method of ladle |
| CN106424688A (en) * | 2016-12-06 | 2017-02-22 | 武汉威林科技股份有限公司 | Slope surface buffer tundish |
| CN108097943A (en) * | 2018-01-24 | 2018-06-01 | 河钢股份有限公司承德分公司 | A kind of liner and pouring procedure applied to vanadium-titanium-iron-water bag |
| CN111482587A (en) * | 2020-05-20 | 2020-08-04 | 山东钢铁股份有限公司 | Tundish heat insulation structure |
| CN115466126A (en) * | 2022-08-17 | 2022-12-13 | 南京钢铁股份有限公司 | Isolation material beneficial to turning of tundish |
-
2011
- 2011-11-14 CN CN2011204481977U patent/CN202427934U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909359A (en) * | 2012-10-29 | 2013-02-06 | 中钢集团邢台机械轧辊有限公司 | Ladle with seepage-proofing insulation layer and masonry method of ladle |
| CN102909359B (en) * | 2012-10-29 | 2014-12-17 | 中钢集团邢台机械轧辊有限公司 | Ladle with seepage-proofing insulation layer and masonry method of ladle |
| CN106424688A (en) * | 2016-12-06 | 2017-02-22 | 武汉威林科技股份有限公司 | Slope surface buffer tundish |
| CN108097943A (en) * | 2018-01-24 | 2018-06-01 | 河钢股份有限公司承德分公司 | A kind of liner and pouring procedure applied to vanadium-titanium-iron-water bag |
| CN111482587A (en) * | 2020-05-20 | 2020-08-04 | 山东钢铁股份有限公司 | Tundish heat insulation structure |
| CN115466126A (en) * | 2022-08-17 | 2022-12-13 | 南京钢铁股份有限公司 | Isolation material beneficial to turning of tundish |
| CN115466126B (en) * | 2022-08-17 | 2023-04-11 | 南京钢铁股份有限公司 | Isolation material for turning tundish |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20151114 |
|
| EXPY | Termination of patent right or utility model |