CN101602104B - Tundish - Google Patents
Tundish Download PDFInfo
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- CN101602104B CN101602104B CN2009100977472A CN200910097747A CN101602104B CN 101602104 B CN101602104 B CN 101602104B CN 2009100977472 A CN2009100977472 A CN 2009100977472A CN 200910097747 A CN200910097747 A CN 200910097747A CN 101602104 B CN101602104 B CN 101602104B
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- molten steel
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- permanent layer
- pour mass
- tundish
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Abstract
The invention discloses a pouring box and a method for removing nonmetal impurities by using the same. The pouring box comprises a permanent layer and a working lining arranged on the inner surface of the permanent layer, wherein the bottom of the permanent layer is provided with an air curtain retaining wall which comprises a pouring body and a ventilating plate fixed on the pouring body, an airchamber is formed between the pouring body and the ventilating plate, and the air chamber is communicated with the outside through a ventilating pipe; and before pouring, argon is blown in at small flow first, the flow is controlled to be between 30 and 50 Nl per minute, the pressure is between 0.2 and 0.3 MPa, the pouring with great bags is performed after 1 to 3 minutes, and then the flow is controlled to be between 80 and 150 Nl per minute, and the pressure is controlled to be between 0.3 and 0.6 MPa. The air curtain retaining wall is arranged in the pouring box to blow the argon into molten steel to diffuse into bubbles, adsorb harmful gases of N, O and the like in the molten steel, and reduce the content of the elements in the molten steel; and the bubbles float upwards to play a role of stirring the molten steel and bringing up foreign impurities of oxides, nitrides, sulfides, silicates and the like in the molten steel so that the impurities are adsorbed by the slag charges on the surface of the molten steel, thus the cleanliness of the molten steel is further improved.
Description
Technical field
The present invention relates to a kind of tundish and use this tundish to remove the method for nonmetal impurities.
Background technology
At present, along with applying of China's high-efficient continuous casting technology, the continuous pouring stove number of continuous casting and the pulling rate of continuous casting improve constantly, and a new problem arose again.The steel-passing amount of tundish and molten steel flow speed increase aggravation molten steel wash away refractory material, and the slag weir refractory products descends service life; The molten steel flow speed increase has reduced the time of non-metallic inclusion come-up relatively in the tundish, and the purification of molten steel effect is weakened to some extent, can not effectively eliminate nozzle clogging.As a whole, the tendency of the needs of high-efficient continuous casting technology development has appearred satisfying in the slag blocking wall refractory products.
Summary of the invention
The object of the present invention is to provide a kind of purify hot metal that has, eliminate nozzle clogging, improve the tundish of caster work rate and use this tundish to remove the method for nonmetal impurities.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of tundish, comprise permanent layer and be arranged on working lining on the permanent layer inner surface, it is characterized in that: described permanent layer bottom is provided with an air curtain barricade wall, described air curtain barricade wall comprises pour mass and the air permeable plate that is connected with pour mass, form air chamber between described pour mass and the air permeable plate, described air chamber is in communication with the outside by breather pipe.
Preferably, described pour mass is connected with the air permeable plate cast; Cast connects simple and convenient, and relatively firmly, good seal performance prevents that the gas leakage from causing energy waste.
Preferably, described pour mass is provided with one and is used for fixing the boss that connects permanent layer; Be provided with the boss that is used to install and fix pour mass, under the situation that does not increase air curtain barricade wall work part thickness, make air curtain barricade wall and permanent layer contact area increase greatly, connection between the two is more firm, is difficult for loosening, safe under molten steel impacts.
Preferably, described boss is arranged on the both sides of pour mass; Both sides are provided with more can strengthen firm degree, and can keep inherent balance.
Preferably, be provided with the groove suitable bottom the described permanent layer with boss.
A kind of tundish is removed the method for nonmetal impurities, it is characterized in that: open and water preceding first low discharge blowing argon gas, flow-control is at 30-50Nl/min, pressure 0.2-0.3Mpa, unwrap greatly after 1-3 minute and water, argon flow amount is controlled at 80-150Nl/min, and pressure is controlled at 0.3-0.6Mpa, and basket pouring is closed argon gas after finishing.
Compared with prior art, advantage of the present invention is: in steel-passing amount that guarantees tundish and molten steel flow speed increase, one air curtain barricade wall is set in tundish, can in molten steel, be blown into a large amount of trickle bubbles of the diffusing formation of Ya Qi Shen by air curtain barricade wall, can adsorb pernicious gases such as N, H in the molten steel, O, reach the content that reduces these pernicious gas elements in the molten steel; Trickle bubble floating, play the effect of stirring molten steel, take up inorganic non-metallic inclusion floating such as oxide in the molten steel, nitride, sulfide, silicate effectively, make them by the absorption of the slag charge of molten steel face, the cleanliness factor of molten steel can be further improved.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is a kind of tundish structure schematic diagram of the present invention;
Fig. 2 is Figure 1A-A place cutaway view.
The specific embodiment
As Fig. 1, Figure 2 shows that one embodiment of the present of invention, a kind of tundish, comprise permanent layer 1 and and be arranged on working lining 2 on permanent layer 1 inner surface, described permanent layer 1 bottom is provided with an air curtain barricade wall, described air curtain barricade wall comprises pour mass 31 and is fixed on air permeable plate 32 on the pour mass 31, form air chamber 5 between described pour mass 31 and the air permeable plate 32, described air chamber 5 is in communication with the outside by breather pipe 4, described pour mass 31 is connected with air permeable plate 32 cast, cast connects simple and convenient, relatively firmly, good seal performance prevents that the gas leakage from causing energy waste.Described pour mass 31 is provided with one and is used for fixing the boss 311 that connects permanent layer 1, described boss 311 is arranged on the both sides of pour mass 31, be provided with the boss that is used to install and fix pour mass, under the situation that does not increase air curtain barricade wall work part thickness, make air curtain barricade wall and permanent layer contact area increase greatly, connection between the two is more firm, under molten steel impacts, be difficult for loosening, safe, both sides are provided with more can strengthen firm degree, and can keep inherent balance.Described permanent layer 1 bottom is provided with the groove 11 suitable with boss 311.
A kind of tundish is removed the method for nonmetal impurities, opens and waters preceding first low discharge blowing argon gas, and flow-control is at 30-50Nl/min, and pressure 0.2-0.3Mpa unwraps greatly after 1-3 minute and waters, and flow-control is at 80-150Nl/min, and pressure is controlled at 0.3-0.6Mpa.Water the back argon flow amount and be controlled at 80-150Nl/min Deng unwrapping greatly, pressure 0.3-0.6Mpa, basket pouring is closed argon gas after finishing.According to pulling rate and scum silica frost situation, Argon pressure is suitably adjusted, little the exposed molten steel of fluctuation is arranged is standard with the tundish liquid level.
Claims (5)
1. tundish, comprise permanent layer (1) and be arranged on working lining (2) on permanent layer (1) inner surface, it is characterized in that: described permanent layer (1) bottom is provided with an air curtain barricade wall, described air curtain barricade wall comprises pour mass (31) and is fixed on air permeable plate (32) on the pour mass (31), form air chamber (5) between described pour mass (31) and the air permeable plate (32), described air chamber (5) is in communication with the outside by breather pipe (4).
2. a kind of tundish according to claim 1 is characterized in that: described pour mass (31) is connected with air permeable plate (32) cast.
3. a kind of tundish according to claim 1 and 2 is characterized in that: described pour mass (31) is provided with one and is used for fixing the boss (311) that connects permanent layer (1).
4. a kind of tundish according to claim 3 is characterized in that: described boss (311) is arranged on the both sides of pour mass (31).
5. a kind of tundish according to claim 4 is characterized in that: described permanent layer (1) bottom is provided with and the suitable groove (11) of boss (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100977472A CN101602104B (en) | 2009-04-17 | 2009-04-17 | Tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100977472A CN101602104B (en) | 2009-04-17 | 2009-04-17 | Tundish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101602104A CN101602104A (en) | 2009-12-16 |
| CN101602104B true CN101602104B (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100977472A Expired - Fee Related CN101602104B (en) | 2009-04-17 | 2009-04-17 | Tundish |
Country Status (1)
| Country | Link |
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| CN (1) | CN101602104B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078957B (en) * | 2010-12-24 | 2012-12-12 | 山东钢铁股份有限公司 | Continuous casting tundish for improving cleanliness of molten steel |
| CN102441651B (en) * | 2011-12-07 | 2015-11-18 | 鞍钢股份有限公司 | A kind of soaking water gap faying face alters the determination processing method of steel |
| CN102632209A (en) * | 2012-04-27 | 2012-08-15 | 宜兴市龙宸炉料有限公司 | Tundish |
| CN102764868B (en) * | 2012-07-11 | 2015-01-07 | 北京科技大学 | Blowing and refining device and method used for removing tundish molten steel inclusion |
| CN103658625A (en) * | 2013-12-02 | 2014-03-26 | 武汉钢铁(集团)公司 | Combined forming process for tundish working layer |
| CN103990787B (en) * | 2014-05-16 | 2016-07-06 | 莱芜钢铁集团有限公司 | A kind of for removing the device and method of molten steel inclusion in continuous casting production |
| ES2797985T3 (en) * | 2016-05-03 | 2020-12-04 | Refractory Intellectual Property Gmbh & Co Kg | Gas purge device |
| CN108300937A (en) * | 2018-01-19 | 2018-07-20 | 天津荣程联合钢铁集团有限公司 | A kind of steel ingot and its processing technology |
| CN115213387A (en) * | 2021-04-15 | 2022-10-21 | 宝山钢铁股份有限公司 | Continuous casting tundish and preparation method thereof |
| CN114952626B (en) * | 2022-05-11 | 2024-01-12 | 宁夏盾源聚芯半导体科技股份有限公司 | Gravity liquid supply system for polishing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200977549Y (en) * | 2006-10-30 | 2007-11-21 | 肖景顺 | Steel and iron pouring basket |
| CN101121199A (en) * | 2007-09-12 | 2008-02-13 | 北京科技大学 | Continuous casting tundish gas curtain removing nonmetal impurities method |
| CN201186336Y (en) * | 2008-03-14 | 2009-01-28 | 濮阳濮耐高温材料（集团）股份有限公司 | Compound casting gas curtain |
| CN201186337Y (en) * | 2008-03-14 | 2009-01-28 | 濮阳濮耐高温材料（集团）股份有限公司 | Tundish gas curtain and pouring box with the gas curtain |
| CN201376086Y (en) * | 2009-04-17 | 2010-01-06 | 陈红良 | Tundish |
-
2009
- 2009-04-17 CN CN2009100977472A patent/CN101602104B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200977549Y (en) * | 2006-10-30 | 2007-11-21 | 肖景顺 | Steel and iron pouring basket |
| CN101121199A (en) * | 2007-09-12 | 2008-02-13 | 北京科技大学 | Continuous casting tundish gas curtain removing nonmetal impurities method |
| CN201186336Y (en) * | 2008-03-14 | 2009-01-28 | 濮阳濮耐高温材料（集团）股份有限公司 | Compound casting gas curtain |
| CN201186337Y (en) * | 2008-03-14 | 2009-01-28 | 濮阳濮耐高温材料（集团）股份有限公司 | Tundish gas curtain and pouring box with the gas curtain |
| CN201376086Y (en) * | 2009-04-17 | 2010-01-06 | 陈红良 | Tundish |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101602104A (en) | 2009-12-16 |
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Granted publication date: 20110608 Termination date: 20120417 |