CN204365998U - Continuous casting production exit molten steel purifying device - Google Patents
Continuous casting production exit molten steel purifying device Download PDFInfo
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- CN204365998U CN204365998U CN201420854691.7U CN201420854691U CN204365998U CN 204365998 U CN204365998 U CN 204365998U CN 201420854691 U CN201420854691 U CN 201420854691U CN 204365998 U CN204365998 U CN 204365998U
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Abstract
The utility model relates to a kind of continuous casting production exit molten steel purifying device.Its technical scheme is: large pipe (2) and the coaxial heart of little pipe (3) are fixed on cup dolly (1), the coaxial heart in upper end of large pipe (2) and little pipe (3) is fixed with circular cover (9), and hollow cavity (4) is built with inserts (5).Cup dolly (1) and circular cover (9) are equipped with central through hole, and the diameter of central through hole is all identical with the internal diameter of little pipe (3); The external diameter of large pipe (2) is identical with the external diameter of circular cover (9), the external diameter of cup dolly (1) is 1.1 ~ 1.3 times of circular cover (9) external diameter, and the semidiameter of the inwall of large pipe (2) and the outer wall of little pipe (3) is 1 ~ 4 times of the diameter of stopper rod of tundish (12).Large pipe (2), little pipe (3) and circular cover (9) have large pipe pod apertures (6), little pipe pod apertures (7) and cover plate pod apertures (8) with being corresponding in turn to.The utility model have structure simple, change convenient, cost is lower and to the effective feature of molten steel purifying.
Description
Technical field
The utility model belongs to molten steel inclusion trap setting technical field.Particularly relate to a kind of continuous casting production exit molten steel purifying device.
Background technology
Along with the development of continuous casting technology, continuous casting production not only plays a part to store and distribute molten steel, also has the function removed molten steel inclusion, improve Cleanliness of Molten Steel.Due to improving constantly of steel industry technical merit, the requirement of steel market to the intensity of steel, deep drawability, corrosion resistance and durability also improves constantly, and the demand of clean steel constantly increases simultaneously.Therefore, in STEELMAKING PRODUCTION flow process, reduce steel inclusion, stop the eternal theme that the cleanliness factor of the extraneous contamination of steelmaking process and raising steel becomes production high-quality steel.And continuous casting production is as last reactor in steel smelting process, it goes the ability be mingled with just to seem particularly important.
In order to improve the ability that continuous casting production goes to be mingled with, Chinese scholars has done large quantity research, adopt the flow control devices such as turbulent flow suppressor, dam, barricade, training wall and filter, to obtain rational continuous casting production flow field of molten steel, to extend molten steel in the mean residence time of continuous casting production and the floating removal promoting field trash.But still have some fail float remove field trash, finally enter crystallizer with molten steel from continuous casting tundish submerged nozzle and stay steel billet, the processing of follow-up steel billet is produced a very large impact, and then affecting the quality of final products.Moreover, the field trash entering into continuous casting tundish submerged nozzle also can be assembled wherein, and impact casting, even causes nozzle blocking, cause casting not carry out continuously.
Summary of the invention
The utility model is intended to the defect overcoming prior art, object be to provide a kind of structure simple, change convenient, cost is lower and to the effective continuous casting production exit molten steel purifying device of molten steel purifying.
For achieving the above object, the technical solution adopted in the utility model is: described device is made up of cup dolly, large pipe, little pipe, inserts and circular cover.Be fixed on cup dolly, the coaxial heart in upper end of large pipe and little pipe is fixed with circular cover large pipe and little pipe concentric, and the hollow cavity surrounded by cup dolly, large pipe, little pipe and circular cover is built with inserts.
Cup dolly and circular cover are equipped with central through hole, and the diameter of described central through hole is all identical with the internal diameter of little pipe, and the diameter of described central through hole is 1.5 ~ 3 times of stopper rod of tundish diameter.The external diameter of large pipe is identical with the external diameter of circular cover, and the external diameter of cup dolly is 1.1 ~ 1.3 times of circular cover external diameter, and the difference of the inwall radius of large pipe and the exterior radius of little pipe is 1 ~ 4 times of stopper rod of tundish diameter.Have large pipe pod apertures to the even tube wall of large pipe, have little pipe pod apertures to the even tube wall of little pipe, circular cover has cover plate pod apertures equably.
The wall thickness of described large pipe and little pipe is 0.3 ~ 2 times of continuous casting tundish stopper diameter; The thickness of cup dolly is equal with the wall thickness of little pipe with the thickness of circular cover.
The diameter of described large pipe pod apertures, little pipe pod apertures and cover plate pod apertures is 10 ~ 60mm.
Described inserts is spherical or is block refractory material, and the particle diameter of inserts is 1.5 ~ 3 times of little pipe pod apertures diameter.
The material of described cup dolly, large pipe, little pipe, circular cover and inserts is high alumina refractories, and the alumina content in high alumina refractories is greater than 80wt%.
This device in use, first coaxial for described cup dolly heart is fixed on the submersed nozzle place bottom continuous casting production, again continuous casting tundish stopper is vertically loaded the center position of this device, the upper end of continuous casting tundish stopper is fixed on the outer wall place of continuous casting tundish cover, and the lower end of continuous casting tundish stopper is near the exit of submersed nozzle.
In use, most of molten steel flows into from large pipe pod apertures and cover plate pod apertures this device, flows out from little pipe pod apertures through the gap of inserts, then enters continuous casting tundish submerged nozzle arrival crystallizer.Steel flow through inserts gap time, because inserts provides enough large surface area, make the inclusion particle in molten steel be adhered to seizure, thus reach to reduce and enter the object of crystallizer inclusion quantity.
Owing to adopting technique scheme, the utility model has following good effect:
1, be fixed on cup dolly large pipe of the present utility model and little pipe concentric, the coaxial heart in upper end of large pipe and little pipe is fixed with circular cover, the hollow cavity surrounded by cup dolly, large pipe, little pipe and circular cover is built with inserts, therefore structure is simple, cost is lower.
2, because molten steel is when flowing through the inserts gap being arranged in hollow cavity, most of inclusion particle is wherein filled material surface adhesion and catches, thus the amount of inclusions being flowed into crystallizer by continuous casting tundish submerged nozzle is reduced largely, and then reduce the amount of inclusions stayed in strand, decrease product defects, improve the quality of product.
3, the molten steel owing to entering continuous casting tundish submerged nozzle is purified by this device, and the amount of inclusions is little, even can get rid of field trash and assembles so can reduce the nozzle blocking caused at the mouth of a river.
4, area is caught because the utility model provides larger adhesion, so when changing bag casting, the continuous casting production covering slag entering into crystallizer can be reduced to greatest extent, thus can improve the quality of strand when changing bag.
5, because hollow cavity of the present utility model is built with a large amount of inserts, therefore produced gap provides larger adhesion capture space, therefore can not block easily, there is the longer working time, thus reduce replacing number of times, the continuity improving pouring operation and efficiency.
6, not only structure is simple for this device, and the mode by simply imbedding is fixed on the exit at the mouth of a river bottom continuous casting production, and it is convenient to change, and has very strong operability.
Therefore, the utility model have structure simple, change convenient, cost is lower and to the effective feature of molten steel purifying.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is the using state schematic diagram of Fig. 1.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in detail, the restriction not to its protection domain.
embodiment 1
A kind of continuous casting production exit molten steel purifying device.As depicted in figs. 1 and 2, described device is made up of cup dolly 1, large pipe 2, little pipe 3, inserts 5 and circular cover 9.Large pipe 2 and the coaxial heart of little pipe 3 are fixed on cup dolly 1, and the coaxial heart in upper end of large pipe 2 and little pipe 3 is fixed with circular cover 9, and the hollow cavity 4 surrounded by cup dolly 1, large pipe 2, little pipe 3 and circular cover 9 is built with inserts 5.
As depicted in figs. 1 and 2, cup dolly 1 and circular cover 9 are equipped with central through hole, and the diameter of described central through hole is all identical with the internal diameter of little pipe 3, and the diameter of described central through hole is 1.5 ~ 2 times of stopper rod of tundish 12 diameter.The external diameter of large pipe 2 is identical with the external diameter of circular cover 9, and the external diameter of cup dolly 1 is 1.1 ~ 1.2 times of circular cover 9 external diameter, and the difference of the large inwall radius of pipe 2 and the exterior radius of little pipe 3 is 1 ~ 2 times of stopper rod of tundish 12 diameter.Have large pipe pod apertures 6 to the even tube wall of large pipe 2, have little pipe pod apertures 7 to the even tube wall of little pipe 3, circular cover 9 has cover plate pod apertures 8 equably.
The wall thickness of described large pipe 2 and little pipe 3 is 0.3 ~ 1 times of continuous casting tundish stopper 12 diameter; The thickness of cup dolly 1 is equal with the wall thickness of little pipe 3 with the thickness of circular cover 9.
The diameter of described large pipe pod apertures 6, little pipe pod apertures 7 and cover plate pod apertures 8 is 10 ~ 30mm.
Described inserts 5 is spherical or is block refractory material, and the particle diameter of inserts 5 is 1.5 ~ 2 times of little pipe pod apertures 7 diameter.
The material of described cup dolly 1, large pipe 2, little pipe 3, circular cover 9 and inserts 5 is high alumina refractories, and the alumina content in high alumina refractories is greater than 80wt%.
As shown in Figure 3, this device in use, first coaxial for described cup dolly 1 heart is fixed on submersed nozzle 10 place of bottom continuous casting production 11, again continuous casting tundish stopper 12 is vertically loaded the center position of this device, the upper end of continuous casting tundish stopper 12 is fixed on the outer wall place of continuous casting tundish cover 13, and the lower end of continuous casting tundish stopper 12 is near the exit of submersed nozzle 10.
In use, most of molten steel flows into from large pipe pod apertures 6 and cover plate pod apertures 8 this device, flows out from little pipe pod apertures 7 through the gap of inserts 5, then enters continuous casting tundish submerged nozzle 10 and arrive crystallizer.Steel flow through inserts 5 gap time, because inserts 5 provides enough large surface area, make the inclusion particle in molten steel be adhered to seizure, thus reach to reduce and enter the object of crystallizer inclusion quantity.
embodiment 2
A kind of continuous casting production exit molten steel purifying device.Except following technical parameter, all the other are with embodiment 1.
The diameter of described central through hole is 2 ~ 2.5 times of stopper rod of tundish 12 diameter;
The external diameter of cup dolly 1 is 1.15 ~ 1.25 times of circular cover 9 external diameter;
The difference of the inwall radius of large pipe 2 and the exterior radius of little pipe 3 is 2 ~ 3 times of stopper rod of tundish 12 diameter;
The wall thickness of described large pipe 2 and little pipe 3 is 1 ~ 1.5 times of continuous casting tundish stopper 12 diameter;
The diameter of described large pipe pod apertures 6, little pipe pod apertures 7 and cover plate pod apertures 8 is 30 ~ 50mm;
The particle diameter of inserts 5 is 2 ~ 2.5 times of little pipe pod apertures 7 diameter.
embodiment 3
A kind of continuous casting production exit molten steel purifying device.Except following technical parameter, all the other are with embodiment 1.
The diameter of described central through hole is 2.5 ~ 3 times of stopper rod of tundish 12 diameter;
The external diameter of cup dolly 1 is 1.2 ~ 1.3 times of circular cover 9 external diameter;
The difference of the inwall radius of large pipe 2 and the exterior radius of little pipe 3 is 3 ~ 4 times of stopper rod of tundish 12 diameter;
The wall thickness of described large pipe 2 and little pipe 3 is 1.5 ~ 2 times of continuous casting tundish stopper 12 diameter;
The diameter of described large pipe pod apertures 6, little pipe pod apertures 7 and cover plate pod apertures 8 is 40 ~ 60mm;
The particle diameter of inserts 5 is 2.5 ~ 3 times of little pipe pod apertures 7 diameter.
This detailed description of the invention has following good effect:
1, the large pipe 2 of this detailed description of the invention and the coaxial heart of little pipe 3 are fixed on cup dolly 1, and the coaxial heart in upper end of large pipe 2 and little pipe 3 is fixed with circular cover 9; The hollow cavity 4 surrounded by cup dolly 1, large pipe 2, little pipe 3 and circular cover 9 is built with inserts 5; Therefore structure is simple, cost is lower.
2, because molten steel is when flowing through inserts 5 gap being arranged in hollow cavity 4, most of inclusion particle is wherein filled material surface adhesion and catches, thus the amount of inclusions being flowed into crystallizer by continuous casting tundish submerged nozzle 10 is reduced largely, and then reduce the amount of inclusions stayed in strand, decrease product defects, improve the quality of product.
3, the molten steel owing to entering continuous casting tundish submerged nozzle 10 is purified by this device, and the amount of inclusions is little, even can get rid of field trash and assembles so can reduce the nozzle blocking caused at the mouth of a river.
4, area is caught because this detailed description of the invention provides larger adhesion, so when changing bag casting, the continuous casting production covering slag entering into crystallizer can be reduced to greatest extent, thus can improve the quality of strand when changing bag.
5, because the hollow cavity 4 of this detailed description of the invention is built with a large amount of inserts 5, therefore produced gap provides larger adhesion capture space, therefore can not block easily, there is the longer working time, thus reduce replacing number of times, the continuity improving pouring operation and efficiency.
6, not only structure is simple for this device, and the mode by simply imbedding is fixed on the exit at 11 mouths of a river bottom continuous casting production, and it is convenient to change, and has very strong operability.
Therefore, this detailed description of the invention have structure simple, change convenient, cost is lower and to the effective feature of molten steel purifying.
Claims (5)
1. a continuous casting production exit molten steel purifying device, is characterized in that described device is made up of cup dolly (1), large pipe (2), little pipe (3), inserts (5) and circular cover (9); Large pipe (2) and the coaxial heart of little pipe (3) are fixed on cup dolly (1), the coaxial heart in upper end of large pipe (2) and little pipe (3) is fixed with circular cover (9), and the hollow cavity (4) surrounded by cup dolly (1), large pipe (2), little pipe (3) and circular cover (9) is built with inserts (5);
Cup dolly (1) and circular cover (9) are equipped with central through hole, the diameter of described central through hole is all identical with the internal diameter of little pipe (3), and the diameter of described central through hole is 1.5 ~ 3 times of stopper rod of tundish (12) diameter; The external diameter of large pipe (2) is identical with the external diameter of circular cover (9), the external diameter of cup dolly (1) is 1.1 ~ 1.3 times of circular cover (9) external diameter, and the difference of the inwall radius of large pipe (2) and the exterior radius of little pipe (3) is 1 ~ 4 times of stopper rod of tundish (12) diameter; Have large pipe pod apertures (6) to the even tube wall of large pipe (2), have little pipe pod apertures (7) to the even tube wall of little pipe (3), circular cover (9) has cover plate pod apertures (8) equably.
2. continuous casting production exit according to claim 1 molten steel purifying device, is characterized in that the wall thickness of described large pipe (2) and little pipe (3) is 0.3 ~ 2 times of continuous casting tundish stopper (12) diameter; The thickness of cup dolly (1) is equal with the wall thickness of little pipe (3) with the thickness of circular cover (9).
3. continuous casting production exit according to claim 1 molten steel purifying device, is characterized in that described large pipe pod apertures (6), the diameter of little pipe pod apertures (7) and cover plate pod apertures (8) is 10 ~ 60mm.
4. continuous casting production exit according to claim 1 molten steel purifying device, it is characterized in that described inserts (5) is for spherical or for block refractory material, the particle diameter of inserts (5) is 1.5 ~ 3 times of little pipe pod apertures (7) diameter.
5. continuous casting production exit according to claim 1 molten steel purifying device, it is characterized in that described cup dolly (1), the greatly material of pipe (2), little pipe (3), circular cover (9) and inserts (5) are high alumina refractories, the alumina content in high alumina refractories is greater than 80wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854691.7U CN204365998U (en) | 2014-12-30 | 2014-12-30 | Continuous casting production exit molten steel purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854691.7U CN204365998U (en) | 2014-12-30 | 2014-12-30 | Continuous casting production exit molten steel purifying device |
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| Publication Number | Publication Date |
|---|---|
| CN204365998U true CN204365998U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420854691.7U Expired - Fee Related CN204365998U (en) | 2014-12-30 | 2014-12-30 | Continuous casting production exit molten steel purifying device |
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| CN (1) | CN204365998U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475695A (en) * | 2014-12-30 | 2015-04-01 | 武汉科技大学 | Molten steel inclusion catching device at outlet of continuous casting tundish |
| CN104985171A (en) * | 2015-08-03 | 2015-10-21 | 武汉科技大学 | Molten steel field trash capture device for continuous casting tundish retaining wall |
| CN108127095A (en) * | 2017-12-05 | 2018-06-08 | 燕山大学 | A kind of automatic exchange device of horizontal continuous casting of copper filter |
| CN113290236A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Molten steel purification device for continuous casting tundish |
-
2014
- 2014-12-30 CN CN201420854691.7U patent/CN204365998U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475695A (en) * | 2014-12-30 | 2015-04-01 | 武汉科技大学 | Molten steel inclusion catching device at outlet of continuous casting tundish |
| CN104985171A (en) * | 2015-08-03 | 2015-10-21 | 武汉科技大学 | Molten steel field trash capture device for continuous casting tundish retaining wall |
| CN108127095A (en) * | 2017-12-05 | 2018-06-08 | 燕山大学 | A kind of automatic exchange device of horizontal continuous casting of copper filter |
| CN108127095B (en) * | 2017-12-05 | 2019-05-28 | 燕山大学 | A kind of automatic exchange device of horizontal continuous casting of copper filter |
| CN113290236A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Molten steel purification device for continuous casting 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: 20150603 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |