CN201264086Y - Bottom argon gas-blowing multi-stream large square blank continuous casting tundish - Google Patents
Bottom argon gas-blowing multi-stream large square blank continuous casting tundish Download PDFInfo
- Publication number
- CN201264086Y CN201264086Y CNU2008202182945U CN200820218294U CN201264086Y CN 201264086 Y CN201264086 Y CN 201264086Y CN U2008202182945 U CNU2008202182945 U CN U2008202182945U CN 200820218294 U CN200820218294 U CN 200820218294U CN 201264086 Y CN201264086 Y CN 201264086Y
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- CN
- China
- Prior art keywords
- tundish
- continuous casting
- brick
- bottom argon
- multithread
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- Expired - Fee Related
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Abstract
The utility model provides a bottom argon multi-strand bloom casting trough which mainly comprises a trough body, a permanent layer, a working layer, a turbulence promoter, a submerged nozzle and a slag wall. The trough is characterized in that a ventilating brick communicated with an air supply pipe is aslant embedded at the bottom of the trough between the two submerged nozzles close to one side the slag wall. The ventilating brick is aslant arranged on the permanent layer at the bottom, and the ventilating surface of the ventilating brick is consistent with the surface of the working layer. The utility model has simple structure, reasonable design, and safety and reliability, and is especially suitable for 4-strand and 6-strand bloom T-shaped casting troughs. Compared with the vertical arrangement of the ventilating brick, the aslant arrangement can cause the ventilating brick to extend by 26.9 percent, thereby the surface area of a gas curtain is increased, and the slag inclusion in steel can be greatly adsorbed and eliminated.
Description
Technical field
The utility model belongs to metallurgy industry steel-making continuous casting technical field, relates in particular to a kind of multithread bloom continuous casting tundish that forms air curtain barricade wall by the bag BOTTOM ARGON BLOWING.
Background technology
Along with the requirement to steel quality is more and more stricter, people no longer use tundish as a simple container, but require in tundish, further to remove field trash, prevent to be polluted again through the molten steel of double refining, the notion of tundish metallurgy has been proposed for this reason.Argon is external refining means commonly used, and the tundish Argon not only can strengthen stirring, and can clean molten steel with the bubble of inertia.The main mode of tundish Argon is to be blown into micro-bubble at the tundish bottom position by porous breathable brick or porous argon pipe.Domestic scholars has been carried out laboratory water mould experiment and commerical test to the tundish BOTTOM ARGON BLOWING, what have has carried out the commerical test of application air curtain barricade wall at double-current slab tundish, obtain effect preferably, the field trash index is reduced to 4.21～4.33mg/ (10kg) from 7.33～8.98mg/ (10kg), and large inclusions quantity obviously reduces, and does not find the field trash of size greater than 30～50 μ m.Studies show that the factors such as size of blow-out position and air-blowing quantity are very big to the influence of dead space volume ratio.
Above-described all is the BOTTOM ARGON BLOWING experimental study that single current or double-current slab tundish are carried out, on bloom or little square billet, also be only limited to the experiment of water mould and the numerical simulation of carrying out in the laboratory, bloom multi-stream casting and single current, double-current slab tundish have a great difference, and the setting of multithread mouth of a river cast makes the interior MOLTEN STEEL FLOW state of tundish and each mouth of a river be tending towards complicated balanced the distribution.Wuhan University Of Technology is yellow difficult to understand, Zhang Meijie to the little square billet tundish air curtain barricade wall of six streams effect carried out mathematical simulation, its air brick vertically is placed between latter two mouth of a river of slag blocking wall, analog computation shows, after adopting the bottom blowing device, after field trash flows out the inclined hole barricade with molten steel, the field trash that can not arrive the end runs into behind the air curtain barricade wall upwards to flow with molten steel and arrives liquid level, is caught by slag the come-up rate is significantly increased.But because of air brick is vertically placed, the air curtain surface area is not enough to some extent, can not catch steel inclusion in a large number.
The utility model content
The purpose of this utility model is the design feature according to multithread bloom continuous casting tundish, and a kind of bottom Argon multithread bloom continuous casting tundish that can effectively increase the air curtain surface area is provided.
The utility model is achieved in that this bottom Argon multithread bloom continuous casting tundish mainly is made up of inclusion, permanent layer, working lining, turbulator, submersed nozzle and slag blocking wall, be characterized near between two mouths of a river of slag blocking wall one side, the bottom angled of tundish is embedded with the air brick that communicates with air supply pipe.
Air brick described in the utility model is obliquely installed on the permanent layer of bottom, and its ventilative face is consistent with the apparent height of working lining; Inclined angle alpha on described air brick and the tundish length direction is between 45 °～60 °; The described air supply pipe that communicates with air brick is close to the inner surface layout of tundish permanent layer, is covered by working lining, is derived by tundish top.
The utility model is simple in structure, reasonable in design, safe and reliable, is specially adapted to four streams and six stream bloom T type continuous casting tundish; Be obliquely installed near the air brick between slag blocking wall one side two mouths of a river, the argon gas that is blown into forms the air curtain of being made up of the come-up bubble and impels molten steel to turn to the top to flow, and helps inclusion particle and collides and grow up and get rid of, thereby improve the degree of purity of molten steel effectively; Compare with the vertical placement of air brick, tilt to place and to make air brick prolong 26.9%, thereby the air curtain surface area is increased, can promote the steel inclusion come-up biglyyer and be absorbed, get rid of.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model four stream bloom continuous casting tundish.
Accompanying drawing 2 is the structural representation of the utility model six stream bloom continuous casting tundish.
Accompanying drawing 3 is the vertical view of accompanying drawing 1.
Accompanying drawing 4 is the vertical view of accompanying drawing 2.
Accompanying drawing 5 is the A-A view of accompanying drawing 3.
The specific embodiment
The utility model will be further described by embodiment with reference to the accompanying drawings.
The utility model embodiment is four streams and six stream bloom T type continuous casting tundish.As can be seen, the utility model bottom Argon bloom continuous casting tundish is made up of inclusion 1, turbulator 5, submersed nozzle 6, slag blocking wall 8 and the air brick 4 that communicates with air supply pipe 9 from accompanying drawing 1～4.7 is long nozzle among the figure.The skin of inclusion 1 is a permanent layer 2, and internal layer is a working lining 3.Two blocks of air bricks 4 lay respectively near between the mouth of a river A and mouth of a river B and mouth of a river C and mouth of a river D of two tundish slag blocking wall 8 one sides, be embedded in the working lining 3 above the tundish bottom permanent layer 2 with being tilted, and its ventilative face is consistent with the upper level of working lining 3, also promptly after building or sprayed working lining 3 by laying bricks or stones, the ventilative face (upper surface) of air brick 4 is in same horizontal plane with the upper surface of bag end working lining 3.Inclined angle alpha on the utility model embodiment air brick 4 and the tundish length direction is 60 °.Air supply pipe 9 and the air brick 4 the same inner surfaces layouts of being close to tundish permanent layer 2, and be embedded in the working lining 3, the one end communicates with air brick 4, and the other end is drawn with source of the gas be connected (referring to accompanying drawing 5) from the top of tundish 1.Unwrap in the middle of the utility model multithread bloom continuous casting and water preceding earlier big flow Argon, open and regulate argon blowing rate and pressure when watering, with the little standard that the exposed molten steel face of fluctuation is arranged as air demand of the liquid level of tundish.
Claims (4)
1. bottom Argon multithread bloom continuous casting tundish, mainly formed by inclusion (1), permanent layer (2), working lining (3), turbulator (5), submersed nozzle (6) and slag blocking wall (8), it is characterized in that near between two mouths of a river of slag blocking wall (8) one sides, the bottom angled of tundish is embedded with the air brick (4) that communicates with air supply pipe (9).
2. bottom Argon multithread bloom continuous casting tundish according to claim 1 is characterized in that described air brick (4) is arranged on the permanent layer (2) of bottom, and its ventilative face is consistent with the apparent height of working lining (3).
3. bottom Argon multithread bloom continuous casting tundish according to claim 1 and 2 is characterized in that inclined angle alpha on described air brick (4) and the tundish length direction is between 45 °～60 °.
4. bottom Argon multithread bloom continuous casting tundish according to claim 1 and 2, it is characterized in that the described air supply pipe (9) that communicates with air brick (4) is close to the inner surface of tundish permanent layer (2) and arranges, covered by working lining (3), derive by tundish top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202182945U CN201264086Y (en) | 2008-09-27 | 2008-09-27 | Bottom argon gas-blowing multi-stream large square blank continuous casting tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202182945U CN201264086Y (en) | 2008-09-27 | 2008-09-27 | Bottom argon gas-blowing multi-stream large square blank continuous casting tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201264086Y true CN201264086Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202182945U Expired - Fee Related CN201264086Y (en) | 2008-09-27 | 2008-09-27 | Bottom argon gas-blowing multi-stream large square blank continuous casting tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201264086Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972840A (en) * | 2010-11-29 | 2011-02-16 | 中冶连铸技术工程股份有限公司 | Billet continuous casting machine and tundish thereof |
| CN102642017A (en) * | 2012-04-17 | 2012-08-22 | 莱芜钢铁集团有限公司 | Ladle bottom structure of continuous casting ladle |
| CN110270679A (en) * | 2019-07-12 | 2019-09-24 | 南京钢铁股份有限公司 | A kind of stream of bloom four tundish |
| CN110744036A (en) * | 2018-07-24 | 2020-02-04 | 宝山钢铁股份有限公司 | Tundish air curtain weir argon blowing inclusion removing device |
| CN111318682A (en) * | 2020-04-01 | 2020-06-23 | 湖北金盛兰冶金科技有限公司 | Tundish structure for square billet continuous casting and casting blank purity analysis process |
-
2008
- 2008-09-27 CN CNU2008202182945U patent/CN201264086Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972840A (en) * | 2010-11-29 | 2011-02-16 | 中冶连铸技术工程股份有限公司 | Billet continuous casting machine and tundish thereof |
| CN102642017A (en) * | 2012-04-17 | 2012-08-22 | 莱芜钢铁集团有限公司 | Ladle bottom structure of continuous casting ladle |
| CN110744036A (en) * | 2018-07-24 | 2020-02-04 | 宝山钢铁股份有限公司 | Tundish air curtain weir argon blowing inclusion removing device |
| CN110270679A (en) * | 2019-07-12 | 2019-09-24 | 南京钢铁股份有限公司 | A kind of stream of bloom four tundish |
| CN111318682A (en) * | 2020-04-01 | 2020-06-23 | 湖北金盛兰冶金科技有限公司 | Tundish structure for square billet continuous casting and casting blank purity analysis process |
| CN111318682B (en) * | 2020-04-01 | 2022-01-25 | 湖北金盛兰冶金科技有限公司 | Tundish structure for continuous casting of square billets |
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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: 20090701 Termination date: 20140927 |
|
| EXPY | Termination of patent right or utility model |