CN102078957B - Continuous casting tundish for improving cleanliness of molten steel - Google Patents
Continuous casting tundish for improving cleanliness of molten steel Download PDFInfo
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- CN102078957B CN102078957B CN 201010603991 CN201010603991A CN102078957B CN 102078957 B CN102078957 B CN 102078957B CN 201010603991 CN201010603991 CN 201010603991 CN 201010603991 A CN201010603991 A CN 201010603991A CN 102078957 B CN102078957 B CN 102078957B
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Abstract
The invention discloses a continuous casting tundish for improving cleanliness of molten steel and belongs to the field of ferrous metallurgy technology. The continuous casting tundish comprises a tundish, porous bricks, an overflow groove, a slag blocking wall and a dam. The continuous casting tundish for improving cleanliness of molten steel provided by the invention makes full use of the double effects of argon foam stirring and cleaning, is safe, practical, simple and convenient, can obviously improve the separation effect of impurities and gases in the molten steel and improve the cleanliness of the molten steel and the quality of billet steel and the like.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, relate to a kind of continuous casting that improves molten steel cleanness and use tundish, particularly be applicable to dark liquid level, big capacity tundish.
Background technology
Along with the fast development of metallurgical technology and user further raising to steel cleanliness factor, quality requirement; The continuous casting tundish; Container as the liquid molten steel of last splendid attire of STEELMAKING PRODUCTION flow process; Have even molten steel component and temperature by original only changing into, prevent secondary oxidation, remove the reactor of metallurgical functions such as steel grade field trash, purification steel, microalloying as the simple receptacle of the holder of molten steel and distributor.Simultaneously; People have developed multinomial tundish metallurgy technology: as use big capacity tundish, use barricade and dam, mounting filtering device, the big flow Argon of the first stove of tundish, adopt that high basicity coverture, tundish heating, tundish are fed silk, the STEEL BY CENTRIFUGAL FLOW TUNDISH field trash is assembled with the removal technology etc., 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.
Porous breathable brick Argon technology is installed in the tundish bottom, is non-metallic inclusion new technology in the removal molten steel that grows up for 20 end of the centurys.Its principle is to utilize the bar shaped diffusion-type air brick vertical with the Molten Steel Flow direction to place a certain optimum position at the bottom of the tundish, is blown into argon gas, and argon gas sees through one microbubble air curtain barrier of air brick come-up formation; Be called " air curtain barricade wall "; Be similar at the bag end and be provided with the dam, can play change fluid motion track, prolong the tundish fluid time of staying; The harmful elemental gas of absorption promotes effects such as field trash polymerization separation.Remove field trash with the tundish gas purification both at home and abroad, mainly contain and in tundish, bury permeability cell underground, install modes such as ventilative beam and spray gun blowing gas.It adapts to the requirement of clean steel development to a certain extent, and the air curtain barricade wall that utilizes the tundish Argon to form replaces the imagination of weir, can reduce the refractory material consumption on the one hand, reduces it is advanced people's molten steel by erosion chance; Help bubble on the other hand and catch the granule field trash in the molten steel, and impel its come-up to remove.Although existing abroad steel mill implements, and obtains certain actual effect; But at home, tundish BOTTOM ARGON BLOWING Study on Technology also is in the starting stage, mainly concentrates on the laboratory basic research, all rarely seen report of commerical test and commercial Application.
The cleaning action that the aerosol barricade has mainly utilized Argon Bubble is installed in the basket pouring district; Correlative study shows; In tundish beam impact zone Argon; Can make full use of the double action of the stirring and the cleaning of Argon Bubble, the effect of removing field trash is more remarkable, and main cause is: the 1. Argon in tundish beam district; Powerful molten steel turbulence intensity can smash into the disperse minute bubbles with Argon Bubble, the effect tiny bubble produces two to field trash in floating-upward process aspect: the one, and help the field trash collision and grow up; The 2nd, Argon Bubble can be caught inclusion particle, and carries the inclusion particle removal of together floating.2. because dried up mouthful of beam district is far away, the field trash after collision is grown up has the long period come-up to discharge.
CN1978093A discloses a kind of tundish metallurgy method that improves the molten steel degree of purity, comprises tundish is separated into refining, the molten steel pouring area that is mixed; At fining cell electromagnetic agitation is set, the molten steel that injects fining cell is carried out electromagnetic agitation; The fining cell slag can be discharged by the fining cell slag trough through the rising liquid level, and molten steel flows into the molten steel pouring area that is mixed by the fining cell foot passage, makes methods such as molten steel component and equalizing temperature.This patent of invention utilizes electromagnetic force to stir molten steel through at the tundish fining cell electromagnetic agitation being set, and exists equipment investment big, and mechanism is complicated, shortcomings such as plant maintenance, operating cost height.
CN201186337Y provides a kind of tundish air curtain barricade wall and the tundish with air curtain barricade wall, and this suitable novel air curtain barricade wall that provides has the contact area increase with permanent layer, and long-time the impact is difficult for becoming flexible characteristics such as security height in molten steel.Tundish with this air curtain barricade wall has mainly utilized the cleaning action of Argon Bubble, and underuses the stirring action of Argon Bubble.
Summary of the invention
The objective of the invention is deficiency to prior art; According to the principle that tundish flow control device design should be simple and practical, resultant effect is best; Make full use of Argon Bubble and stir and clean double effects; Provide a kind of safe, practical, easy, can significantly improve field trash in the molten steel, gas separation effect, improve the continuous casting tundish of molten steel cleanness and billet quality.
A kind of continuous casting tundish that improves molten steel cleanness is by the mouth of a river (5) under tundish main body (4), the tundish, wrap long nozzle (3), air brick (9), overflow launder (2), slag blocking wall (1) and dam (6) greatly and constitute.The mouth of a river under the tundish (5) is installed in a side of the bottom of tundish main body (4); Big bag long nozzle (3) is installed on the slide gate nozzle of tundish main body (4) top ladle bottom; Dam (6) is installed in the bottom of tundish main body (4).Slag blocking wall (1) is installed between big bag long nozzle (3) and dam (6); Tundish (4) is divided into beam impact zone (10) and pouring area (11); Said slag blocking wall (1) is up big and down small trapezoidal; Both sides are connected with two sidewalls of tundish main body (4), and lower openings is left in the bottom, and end face is concordant with the inclusion upper edge.Said overflow launder (2) is installed on the bag wall of beam impact zone (10) one sides; Said air brick (9) is installed in tundish beam impact zone (10) bottom.
Preferably, the upper end of wrapping long nozzle (3) greatly is installed on the slide gate nozzle of tundish beam impact zone (10) top ladle bottom, and 8mm-15mm under the tundish molten steel face is immersed in the lower end.
Said air brick (9) is installed in tundish beam impact zone (10) bottom, and air brick (9) upper surface exceeds working lining surface, tundish beam impact zone (10) bottom, the working lining thickening of beam impact zone bottom.
Said air brick (9) links to each other with air chamber (8), and air chamber (8) sees through metal tube (7) and links to each other with external tunger tube.
Preferably, air brick exceeds tundish beam impact zone working lining 10mm-50mm.
Preferably, beam impact zone (10) bottom working lining is than pouring area (11) bottom work bed thickness 50mm-150mm.
Preferably, said overflow launder (2) is installed in the Bao Bi top of tundish beam impact zone (10) one sides.
Weir and dam in tundish, dam, wrap that the mouth of a river, metal tube all adopt known shape under long nozzle, the tundish greatly.
Preferably, the continuous casting tundish of said raising molten steel cleanness, the mouth of a river (5) and 2-3 dam (6) under distributed and arranged 2-3 slag blocking wall (1), the 2-3 tundish, slag blocking wall (1) are positioned between the both sides and dam (6) of big bag long nozzle (3).Dam (6) is positioned at the bottom of the tundish main body (4) between the mouth of a river (5) under slag blocking wall (1) and the tundish of big bag long nozzle (3) both sides.
The manufacturing approach of the continuous casting tundish of described raising molten steel cleanness comprises the following steps:
1) air brick is installed:
The air brick (9) of beam impact zone (10) bottom is also put in tundish (4) cast, the anti-material prelocalization of knotting in advance,
2) cast, knotting tundish main body:
The main body of tundish (4) combines closely knit, seamless with air brick (9); The upper surface of air brick (9) will exceed beam impact zone (10) bottom working lining upper surface 10mm-50mm; Beam impact zone (10) bottom working lining is than pouring area bottom work bed thickness 50mm-150mm;
3) tundish natural air drying, little fire baking,
4) tundish baking:
After the tundish natural air drying of step 3), the little fire baking, big fire baking 3 hours when temperature reaches 1000-1100 ℃, moves to the cast position with tundish (4), and outside argon gas pipeline is connected with the metal tube that is connected air chamber (8) (7); Simultaneously, the mouth of a river (5) under big bag long nozzle (3) and the tundish are toasted;
5) be blown into argon gas through air brick (9) from the bottom of tundish (4), the air in the bag is driven out of, to reduce or to prevent to open the air-breathing and secondary oxidation that does not add molten steel before covering slag, the coverture after watering.
The above-mentioned tundish that obtains can directly be used for the molten steel casting.Unwrap greatly water after; Molten steel gets into tundish beam impact zone 10 through big bag long nozzle 3; In beam impact zone 10, receive stirring, cleaning action that bottom air brick 9 is blown into the Argon Bubble of argon gas (control of argon pressure, flow should not exposed with molten steel face in the beam impact zone 10, fine motion is as the criterion) formation; Come-up is caught and carried to gas in the molten steel and field trash by Argon Bubble; Got into the top slag blanket by the absorption of top slag, and discharge through the overflow launder 2 that is installed in the beam impact zone 10 in good time, molten steel is purified.The molten steel of the beam impact zone 10 that has been cleaned gets into pouring area 11 through the bottom of slag blocking wall 1, in flow process, receives the barrier effect come-up on dam 6, finally flows out through the mouth of a river under the tundish 5.Rationally be provided with through slag blocking wall 1, dam 6, molten steel has further improved flow behavior in pouring area 11, prolongs the time of staying in tundish, has promoted the residue floating foreign, has improved the cleanliness factor of molten steel, has strengthened the metallurgical effect of tundish.
Flow control device setting in the tundish; Should with simple be suitable for, resultant effect is best is principle; Prolong the time of staying of molten steel in tundish as much as possible, promote floating foreign and removal to greatest extent, quicken the mixing of molten steel; Evenly the composition and the temperature of molten steel make each stream burst molten steel flow characteristic reach unanimity to the multithread continuous casting as far as possible.
The tundish of raising molten steel cleanness provided by the invention; At the beam impact zone air brick is installed, unwrap greatly water after, be blown into argon gas through argon gas pipeline and the air chamber that is connected with the outside; The effect of make full use of the Argon Bubble buffering, stirring and cleaning the beam molten steel; Reduce the molten steel beam tundish bottom is impacted, strengthened stirring and cleaning, effectively promote gas and floating foreign separation in the molten steel molten steel.Simultaneously,, utilize measures such as the in good time slagging of overflow launder, guarantee that gas, field trash are in time caught, discharged in the steel, purified molten steel through taking to add high basicity covering slag and carbonization rice husk formation double shielding slag structure at tundish beam impact zone.Utilize slag blocking wall, dam to cooperate the flow behavior of improving the pouring area molten steel, prolong the time of staying of molten steel in tundish, further promote floating foreign, the composition and the temperature of even molten steel, the metallurgical effect of enhancing tundish improves slab quality.
Description of drawings
Fig. 1 is a single current tundish structure sketch map
Fig. 2 is double-current tundish structure sketch map
Fig. 3 is accompanying drawing 1 vertical view
Fig. 4 is accompanying drawing 2 vertical views
Fig. 5 is a bottom air brick sketch map
Wherein: 1-slag blocking wall, 2-overflow launder, the big bag long nozzle of 3-, 4-tundish main body, the mouth of a river under the 5-tundish, 6-dam, 7-metal tube, 8-air chamber, 9-air brick, 10-beam impact zone, 11-pouring area
The specific embodiment
Following examples are to further specify of the present invention, but the present invention is not limited thereto.
As shown in figures 1 and 3, a kind of continuous casting tundish that improves molten steel cleanness comprises slag blocking wall 1, and overflow launder 2 wraps long nozzle 3 greatly, tundish main body 4, and the mouth of a river 5 under the tundish, dam 6, air brick 9 is formed.
The mouth of a river 5 is installed in a side of the bottom of tundish main body 4 under the tundish; Big bag long nozzle 3 is installed on the slide gate nozzle of tundish main body 4 top ladle bottoms (upper end of wrapping long nozzle 3 greatly is installed on the slide gate nozzle of tundish beam impact zone 10 top ladle bottoms, and 8mm-15mm under the tundish molten steel face is immersed in the lower end); Dam 6 is installed in the bottom of tundish main body 4.Slag blocking wall 1 is installed between big bag long nozzle 3 and the dam 6, and slag blocking wall 1 is divided into beam impact zone 10 and pouring area 11 two parts with tundish 4.Said slag blocking wall 1 is up big and down small trapezoidal, and both sides are connected with two sidewalls of tundish main body 4, and lower openings is left in the bottom, and end face is concordant with the inclusion upper edge.Said overflow launder 2 is installed on the bag wall of beam impact zone 10 1 sides; Said air brick 9 is installed in tundish beam impact zone 10 bottoms.
The air brick 9 of beam impact zone 10 bottoms is also put in tundish 4 cast, the anti-material prelocalization of knotting in advance, and the tundish main body is divided into permanent layer and working lining, and the working lining bottom is a permanent layer; Utilize permanent layer, the working lining of special fetal membrane cast, knotting tundish 4, and guarantee that permanent layer, the working lining of tundish 4 combine closely knit, seamless with air brick 9; The upper surface of air brick 9 will exceed beam impact zone 10 bottom working lining upper surface 10mm-50mm.Simultaneously, make beam impact zone 10 bottom working linings than pouring area bottom work bed thickness 50mm-150mm.After tundish 4 natural air dryings, little fire baking, big fire baking about 3 hours when temperature reaches 1000-1100 ℃, moves to the cast position with tundish 4, and outside argon gas pipeline is connected with the metal tube that is connected air chamber 87.Simultaneously, the mouth of a river 5 under big bag long nozzle 3 and the tundish is toasted.
Open water before, be blown into argon gas through air brick 9 from the bottom of tundish 4, the air in the bag is driven out of, to reduce or to prevent to open the air-breathing and secondary oxidation that does not add molten steel before covering slag, the coverture after watering.Unwrap greatly water after; Molten steel gets into tundish beam impact zone 10 through big bag long nozzle 3; In beam impact zone 10, receive stirring, cleaning action that bottom air brick 9 is blown into the Argon Bubble of argon gas (control of argon pressure, flow should not exposed with molten steel face in the beam impact zone 10, fine motion is as the criterion) formation; Come-up is caught and carried to gas in the molten steel and field trash by Argon Bubble; Got into the top slag blanket by the absorption of top slag, and discharge through the overflow launder 2 that is installed in the beam impact zone 10 in good time, molten steel is purified.The molten steel of the beam impact zone 10 that has been cleaned gets into pouring area 11 through the bottom of slag blocking wall 1, in flow process, receives the barrier effect come-up on dam 6, finally flows out through the mouth of a river under the tundish 5.Rationally be provided with through slag blocking wall 1, dam 6, molten steel has further improved flow behavior in pouring area 11, prolongs the time of staying in tundish, has promoted the residue floating foreign, has improved the cleanliness factor of molten steel, has strengthened the metallurgical effect of tundish.
Like Fig. 2 and shown in Figure 4, a kind of continuous casting tundish that improves molten steel cleanness comprises slag blocking wall 1, and overflow launder 2 wraps long nozzle 3 greatly, tundish main body 4, and the mouth of a river 5 under the tundish, dam 6, air brick 9 is formed.
The mouth of a river 5 is installed in the both sides side of the bottom of tundish main body 4 under two tundish; Big bag long nozzle 3 is installed on the slide gate nozzle of top ladle bottom of tundish main body 4 (upper end of wrapping long nozzle 3 greatly is installed on the slide gate nozzle of tundish beam impact zone 10 top ladle bottoms, and 8mm-15mm under the tundish molten steel face is immersed in the lower end); Two dams 6 are installed in the bottom of tundish main body 4.Two slag blocking walls 1 are installed between big bag long nozzle 3 and the dam 6, and slag blocking wall 1 is divided into beam impact zone 10 and pouring area 11 with tundish 4; The centre is a beam impact zone 10, and both sides are pouring area 11.Said slag blocking wall 1 is up big and down small trapezoidal, and both sides are connected with two sidewalls of tundish main body (4), and lower openings is left in the bottom, and end face is concordant with the inclusion upper edge.Said overflow launder (2) is installed on the bag wall of beam impact zone (10) one sides; Said air brick (9) is installed in tundish beam impact zone (10) bottom.
The air brick 9 of beam impact zone 10 bottoms is also put in tundish 4 cast, the anti-material prelocalization of knotting in advance; Utilize permanent layer, the working lining of special fetal membrane cast, knotting tundish 4, and guarantee that permanent layer, the working lining of tundish 4 combine closely knit, seamless with air brick 9; The upper surface of air brick 9 will exceed beam impact zone 10 bottom working lining upper surface 10mm-50mm.Simultaneously, make beam impact zone 10 bottom working linings than pouring area bottom work bed thickness 50mm-150mm.After tundish 4 natural air dryings, little fire baking, big fire baking about 3 hours when temperature reaches 1000-1100 ℃, moves to the cast position with tundish 4, and outside argon gas pipeline is connected with the metal tube that is connected air chamber 87.Simultaneously, the mouth of a river 5 under big bag long nozzle 3 and the tundish is toasted.
Open water before, be blown into argon gas through air brick 9 from the bottom of tundish 4, the air in the bag is driven out of, to reduce or to prevent to open the air-breathing and secondary oxidation that does not add molten steel before covering slag, the coverture after watering.Unwrap greatly water after; Molten steel gets into tundish beam impact zone 10 through big bag long nozzle 3; In beam impact zone 10, receive stirring, cleaning action that bottom air brick 9 is blown into the Argon Bubble of argon gas (control of argon pressure, flow should not exposed with molten steel face in the beam impact zone 10, fine motion is as the criterion) formation; Come-up is caught and carried to gas in the molten steel and field trash by Argon Bubble; Got into the top slag blanket by the absorption of top slag, and discharge through the overflow launder 2 that is installed in the beam impact zone 10 in good time, molten steel is purified.The molten steel of the beam impact zone 10 that has been cleaned gets into the pouring area 11 of beam impact zone 10 both sides through the bottom of slag blocking wall 1, in flow process, receive the barrier effect come-up on dam 6, finally flows out through the mouth of a river under tundish body 4 both sides 5.Rationally be provided with through slag blocking wall 1, dam 6, molten steel has further improved flow behavior in pouring area 11, prolongs the time of staying in tundish, has promoted the residue floating foreign, has improved the cleanliness factor of molten steel, has strengthened the metallurgical effect of tundish.
Claims (6)
1. continuous casting tundish that improves molten steel cleanness is by the mouth of a river (5) under tundish main body (4), the tundish, wrap long nozzle (3), air brick (9), overflow launder (2), slag blocking wall (1) and dam (6) greatly and constitute; The mouth of a river under the tundish (5) is installed in a side of the bottom of tundish main body (4); Big bag long nozzle (3) is installed on the slide gate nozzle of top ladle bottom of tundish main body (4); Dam (6) is installed in the bottom of tundish main body (4); Slag blocking wall (1) is installed between big bag long nozzle (3) and dam (6), and tundish (4) is divided into beam impact zone (10) and pouring area (11);
Said slag blocking wall (1) is up big and down small trapezoidal, and both sides are connected with two sidewalls of tundish main body (4), and lower openings is left in the bottom, and end face is concordant with the inclusion upper edge; Said overflow launder (2) is installed on the bag wall of beam impact zone (10) one sides; Said air brick (9) is installed in tundish beam impact zone (10) bottom;
The upper end of big bag long nozzle (3) is installed on the slide gate nozzle of tundish beam impact zone (10) top ladle bottom, and 8mm-15mm under the tundish molten steel face is immersed in the lower end;
Said air brick (9) is installed in tundish beam impact zone (10) bottom, and air brick (9) upper surface exceeds working lining surface, tundish beam impact zone (10) bottom, the working lining thickening of beam impact zone bottom;
Said air brick (9) links to each other with air chamber (8), and air chamber (8) sees through metal tube (7) and links to each other with external tunger tube;
Air brick exceeds tundish beam impact zone working lining 10mm-50mm.
2. the continuous casting tundish of raising molten steel cleanness as claimed in claim 1 is characterized in that, beam impact zone bottom working lining is than pouring area bottom work bed thickness 50mm-150mm.
3. according to claim 1 or claim 2 the continuous casting tundish of raising molten steel cleanness is characterized in that said overflow launder (2) is installed in the Bao Bi top of tundish beam impact zone (10) one sides.
4. according to claim 1 or claim 2 the continuous casting tundish of raising molten steel cleanness; It is characterized in that; The continuous casting tundish of said raising molten steel cleanness; The mouth of a river (5) and 2-3 dam (6) under distributed and arranged 2-3 slag blocking wall (1), the 2-3 tundish, slag blocking wall (1) are positioned between the both sides and dam (6) of big bag long nozzle (3); Dam (6) is positioned at the bottom of the tundish main body (4) between the mouth of a river (5) under slag blocking wall (1) and the tundish of big bag long nozzle (3) both sides.
5. the continuous casting tundish of raising molten steel cleanness as claimed in claim 3; It is characterized in that; The continuous casting tundish of said raising molten steel cleanness; The mouth of a river (5) and 2-3 dam (6) under distributed and arranged 2-3 slag blocking wall (1), the 2-3 tundish, slag blocking wall (1) are positioned between the both sides and dam (6) of big bag long nozzle (3); Dam (6) is positioned at the bottom of the tundish main body (4) between the mouth of a river (5) under slag blocking wall (1) and the tundish of big bag long nozzle (3) both sides.
6. according to claim 1 or claim 2 the manufacturing approach of continuous casting tundish of raising molten steel cleanness comprises the following steps:
1) air brick is installed:
The air brick (9) of beam impact zone (10) bottom is also put in tundish (4) cast, the anti-material prelocalization of knotting in advance,
2) cast, knotting tundish main body:
The main body of tundish (4) combines closely knit, seamless with air brick (9); The upper surface of air brick (9) will exceed beam impact zone (10) bottom working lining upper surface 10mm-50mm; Beam impact zone (10) bottom working lining is than pouring area bottom work bed thickness 50mm-150mm;
3) tundish natural air drying, little fire baking,
4) tundish baking:
After the tundish natural air drying of step 3), the little fire baking, big fire baking 3 hours when temperature reaches 1000-1100 ℃, moves to the cast position with tundish (4), and outside argon gas pipeline is connected with the metal tube that is connected air chamber (8) (7); Simultaneously, the mouth of a river (5) under big bag long nozzle (3) and the tundish are toasted;
5) be blown into argon gas through air brick (9) from the bottom of tundish (4), the air in the bag is driven out of.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010603991 CN102078957B (en) | 2010-12-24 | 2010-12-24 | Continuous casting tundish for improving cleanliness of molten steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010603991 CN102078957B (en) | 2010-12-24 | 2010-12-24 | Continuous casting tundish for improving cleanliness of molten steel |
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| Publication Number | Publication Date |
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| CN102078957A CN102078957A (en) | 2011-06-01 |
| CN102078957B true CN102078957B (en) | 2012-12-12 |
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| CN114131002A (en) * | 2021-11-03 | 2022-03-04 | 孟淡军 | Steel pouring tundish |
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| CN102847923B (en) * | 2011-06-28 | 2015-04-22 | 宝山钢铁股份有限公司 | Tundish with molten steel purity stably improved under low argon consumption and metallurgical method thereof |
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| CN102773439A (en) * | 2012-08-22 | 2012-11-14 | 北京科技大学 | Rotational flow reaction system for metal continuous pouring |
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| CN114226664B (en) * | 2021-12-30 | 2023-09-15 | 江西慧高导体科技有限公司 | Continuous smelting furnace and ingot casting system with same |
| CN114734031B (en) * | 2022-04-11 | 2023-12-15 | 成都先进金属材料产业技术研究院股份有限公司 | Pouring launder of vacuum induction furnace and pouring method of vacuum induction smelting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2863315Y (en) * | 2005-12-01 | 2007-01-31 | 洛阳铁门耐火材料有限公司 | Blowing type turbulence proof controller for bakie |
| CN101028724A (en) * | 2006-10-09 | 2007-09-05 | 河南红旗炉料有限公司 | Intermediate air-curtain brick and its production |
| CN201249259Y (en) * | 2008-06-05 | 2009-06-03 | 广州珠江钢铁有限责任公司 | Slab continuous casting tundish |
| CN101774014B (en) * | 2008-12-16 | 2012-07-04 | 中国第一重型机械股份公司 | Tundish with baffle wall for vacuum cast ingot |
| CN101524751B (en) * | 2009-03-27 | 2010-10-13 | 莱芜钢铁集团有限公司 | Plate blank tundish for preventing cast-on downward flow and preparation method thereof |
| CN101602104B (en) * | 2009-04-17 | 2011-06-08 | 陈红良 | Tundish |
| CN201913209U (en) * | 2010-12-24 | 2011-08-03 | 莱芜钢铁股份有限公司 | Continuous casting tundish used for improving cleanliness of molten steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131002A (en) * | 2021-11-03 | 2022-03-04 | 孟淡军 | Steel pouring tundish |
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