CN201693164U - Tundish retaining wall with blowing function - Google Patents
Tundish retaining wall with blowing function Download PDFInfo
- Publication number
- CN201693164U CN201693164U CN201020226891XU CN201020226891U CN201693164U CN 201693164 U CN201693164 U CN 201693164U CN 201020226891X U CN201020226891X U CN 201020226891XU CN 201020226891 U CN201020226891 U CN 201020226891U CN 201693164 U CN201693164 U CN 201693164U
- Authority
- CN
- China
- Prior art keywords
- tundish
- barricade
- molten steel
- retaining wall
- promoted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007664 blowing Methods 0.000 title claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 45
- 239000010959 steel Substances 0.000 abstract description 45
- 239000011261 inert gas Substances 0.000 abstract description 6
- 238000007667 floating Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract 2
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000004220 aggregation Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The utility model provides a tundish barricade with function of blowing, including barricade (1) that has the water conservancy diversion hole, its characterized in that is equipped with ventilative area (2) in the lower part of barricade to communicate with the external world by embedding at the inside air duct (3) of barricade. Inert gas is blown into the molten steel through the air permeable belt at the lower part of the retaining wall to form bubbles, and the bubbles rise along the two sides of the retaining wall to form updraft, so that dead zones of molten steel flowing at the retaining wall of the tundish are reduced, the detention time of the molten steel in the tundish is prolonged, collision, aggregation, growth and floating of small impurities in the molten steel of the tundish are promoted, the removal of impurities in the steel is promoted, and the uniformity of the components and the temperature of the molten steel of the tundish is promoted.
Description
Technical field
The utility model belongs to steelmaking technical field, particularly relate to a kind of in the casting process of molten steel, the weir and dam in tundish that the function of weir and dam in tundish and air blowing can be integrated.
Background technology
Devices such as weir, dam, turbulent flow TVS and water conservancy diversion barricade are set in tundish, are used widely with further removal steel inclusion, the molten steel control stream technology that obtains purifying of steel.
Utilize air brick, porous plug, stopper slit etc. in tundish, to be blown into inert gas in the steel, collision, adhesion, come-up and removal that bubble that produces or air curtain can promote steel inclusion, change the flow field state of molten steel simultaneously, promote the uniform tundish air blowing technology of interior molten steel composition of tundish and temperature also to be used widely.
Existing weir and dam in tundish control stream technology, normally on barricade, be provided with inclination angle difference, quantity difference, position difference, variform pod apertures, with so that molten steel passes through barricade with certain direction, flow velocity, thereby the flow field of molten steel in the adjustment tundish, prolong the holdup time of molten steel in tundish, reduce " dead band " volume, promote the come-up and the removal that are mingled with in the steel.
Existing tundish air blowing technology, generally be that the brick body that will have airing function places above the permanent layer of tundish, blow by the molten steel of air brick body in tundish, thereby reach the purpose that changes molten steel flow field, even molten steel composition and temperature, promotion inclusion floating.
In the actual production, perhaps adopt weir and dam in tundish control stream technology separately, perhaps adopt weir and dam in tundish control stream technology and tundish air blowing technology simultaneously.But all have following problem: 1, barricade and air brick body are two separate components, and when building tundish by laying bricks or stones, operation is loaded down with trivial details, and man-hour is longer; 2, there be big " dead band " in the barricade both sides, and MOLTEN STEEL FLOW is not smooth.
Summary of the invention
The purpose of this utility model is to provide a kind of weir and dam in tundish that barricade function and air blowing function are rolled into one, the molten steel of air permeable belt in tundish by this barricade bottom is blown into inert gas, to change the MOLTEN STEEL FLOW state, reduce " dead band ", further promote molten steel composition and temperature in the tundish evenly, remove in the steel and be mingled with; Simultaneously, reduce tundish and build operation by laying bricks or stones and build by laying bricks or stones man-hour, for continuous casting production is given security.
The purpose of this utility model is achieved in that a kind of weir and dam in tundish that has the air blowing function, comprises the barricade that has pod apertures, it is characterized in that, is provided with air permeable belt in the bottom of barricade, and is in communication with the outside by wireway.Barricade in the tundish is made by different refractory materials with the air permeable belt of bottom, form conjoined structure, introduce inert gas by the wireway that is embedded in barricade inside: argon gas or nitrogen, air permeable belt by the barricade bottom is blown into molten steel with inert gas, form bubble, along rising on the barricade both sides, form ascending air, thereby reduce " dead band " of weir and dam in tundish place MOLTEN STEEL FLOW, prolong the holdup time of molten steel in tundish, promote the small collision that is mingled with in the tundish molten steel, assemble, grow up, come-up promotes the removal of steel inclusion, promotes the even of tundish molten steel composition and temperature.
Because barricade of the present utility model and existing barricade and the existing difference of adopting air brick, porous plug etc. to be blown into the method for gas in tundish are: original employing air brick or air curtain barricade wall are blown into the method for gas in tundish, not only need to change the brick-building art of tundish, and place, the base angle of barricade also has bigger " dead band " to exist; And adopt barricade of the present utility model, not only need not to change the brick-building art of tundish, also can improve the tundish molten steel flows, reduce " dead band " at barricade place, prolong the holdup time of molten steel in tundish, thereby can more effectively promote molten steel component and temperature in the tundish evenly, more effectively remove in the steel and be mingled with.Therefore advantage of the present utility model is:
1, tundish to build operation by laying bricks or stones few, man-hour is short;
2, " dead band " at place, barricade both sides is little, and the holdup time of molten steel is long;
3, effectively promote molten steel composition in the tundish, temperature evenly and the removal that is mingled with in the steel.
Description of drawings
Fig. 1 has the structural representation of the weir and dam in tundish of air blowing function for the utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Among the figure, 1: barricade, 2: air permeable belt, 3: wireway.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Shown in accompanying drawing 1,2,, air permeable belt 2 is set in the bottom of the original barricade 1 of continuous casting tundish; Air permeable belt 2 is made by the refractory material with certain airing function, and be in communication with the outside by the wireway 3 that is embedded in barricade inside, introduce inert gas by wireway 3: argon gas or nitrogen etc. with certain pressure, gas enters molten steel through the air permeable belt 2 of barricade bottom, form bubble, and along rising on the barricade both sides, thereby promote barricade both sides molten steel flow, reduce " dead band " of MOLTEN STEEL FLOW in the tundish, promote the small collision that is mingled with in the tundish molten steel, assemble, grow up, come-up, remove steel inclusion, promote the even of tundish molten steel composition and temperature.
This barricade is highly suitable for the tundish of single, double stream caster machine, also can be used for other conticaster tundish.
Claims (2)
1. a weir and dam in tundish that has the air blowing function comprises the barricade (1) that has pod apertures, it is characterized in that, is provided with air permeable belt (2) in the bottom of barricade, and is in communication with the outside by the wireway that is embedded in barricade inside (3).
2. the weir and dam in tundish that has the air blowing function according to claim 1 is characterized in that: the air permeable belt that the barricade bottom is provided with (2) is made by the refractory material with airing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020226891XU CN201693164U (en) | 2010-06-07 | 2010-06-07 | Tundish retaining wall with blowing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020226891XU CN201693164U (en) | 2010-06-07 | 2010-06-07 | Tundish retaining wall with blowing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201693164U true CN201693164U (en) | 2011-01-05 |
Family
ID=43394408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020226891XU Expired - Fee Related CN201693164U (en) | 2010-06-07 | 2010-06-07 | Tundish retaining wall with blowing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201693164U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303113A (en) * | 2011-08-29 | 2012-01-04 | 武汉钢铁(集团)公司 | Continuous casting tundish porous baffle wall having functions of casting and calcium treatment |
| CN105964998A (en) * | 2016-05-20 | 2016-09-28 | 首钢总公司 | Method and device for filling continuous casting tundish with argon |
| WO2020020069A1 (en) * | 2018-07-24 | 2020-01-30 | 宝山钢铁股份有限公司 | Tundish |
-
2010
- 2010-06-07 CN CN201020226891XU patent/CN201693164U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303113A (en) * | 2011-08-29 | 2012-01-04 | 武汉钢铁(集团)公司 | Continuous casting tundish porous baffle wall having functions of casting and calcium treatment |
| CN102303113B (en) * | 2011-08-29 | 2013-11-27 | 武汉钢铁(集团)公司 | Continuous casting tundish porous baffle wall having functions of casting and calcium treatment |
| CN105964998A (en) * | 2016-05-20 | 2016-09-28 | 首钢总公司 | Method and device for filling continuous casting tundish with argon |
| CN105964998B (en) * | 2016-05-20 | 2018-05-25 | 首钢集团有限公司 | A kind of method and device of continuous casting production argon filling |
| WO2020020069A1 (en) * | 2018-07-24 | 2020-01-30 | 宝山钢铁股份有限公司 | Tundish |
| US11684969B2 (en) | 2018-07-24 | 2023-06-27 | Baoshan Iron & Steel Co., Ltd. | 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: 20110105 Termination date: 20160607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |