CN104439136A - Impurity filtering and absorbing flow divider for tundish - Google Patents
Impurity filtering and absorbing flow divider for tundish Download PDFInfo
- Publication number
- CN104439136A CN104439136A CN201410776974.9A CN201410776974A CN104439136A CN 104439136 A CN104439136 A CN 104439136A CN 201410776974 A CN201410776974 A CN 201410776974A CN 104439136 A CN104439136 A CN 104439136A
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- CN
- China
- Prior art keywords
- tundish
- font
- filtration members
- filter
- gettering
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/119—Refining the metal by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to an impurity filtering and absorbing flow divider for a tundish. The impurity filtering and absorbing flow divider comprises a tundish body, a permanent layer, an operating layer, a tundish water port, an impurity baffle wall, a turbulence controller and a flow division filter. The impurity filtering and absorbing flow divider is characterized in that the flow division filter is arranged below the impurity baffle wall and comprises a flow division filter body and a plurality of 'V' or 'U'-shaped filter parts, the filter parts are embedded in the flow division filter body and provided with a plurality of through holes, and an adsorption layer is composited on the inner walls of the 'V' or 'U'-shaped filter parts. The impurity filtering and absorbing flow divider has the advantages that specific surface area of the unit size of the flow divider contacting with molten steel is increased to the greatest extent, and collision rate of the impurities and the flow divider is increased. In addition, flow state of the molten steel in the tundish is greatly improved, and the impurities in the molten steel can be further removed.
Description
technical field
The present invention relates to a kind for the treatment of facility of motlten metal, particularly a kind of tundish filtration, gettering current divider.
Background technology
Tundish is an intermediate receptacle between ladle and crystallizer, effect is decompression, current stabilization, slagging-off, Chu Gang shunting and realize tundish metallurgy.Along with more and more higher to steel products quality requirement, modern metallurgical more and more higher to Molten Steel Cleanliness requirement.Field trash is present in steel as independent entry, destroys the continuity of steel matrix, increases the inhomogeneities organized in steel, has had a strong impact on the various performances of steel, and meanwhile, steel inclusion also easily causes continuous casting billet and stocking defect, causes waste product.Therefore, removal of inclusions, to improve Cleanliness of Molten Steel be an important goal of modern technical field of smelting.Tundish has been not merely a transition container, but strives further removal of inclusions in tundish, prevents the secondary pollution of molten steel from improving the degree of purity of molten steel further.
In order to reach the object of clean molten steel, from the 70's of 20th century, metallargist just begins one's study by arranging the flow control devices such as dam, weir, turbulence inhibitor in tundish, change the flow regime of molten steel, eliminate the short-circuit flow in tundish, extend the time of staying of molten steel in tundish, promote the removal of field trash, finally reach the object improving Cleanliness of Molten Steel; To the 80's of 20th century, people on the basis arranging weir and dam, start the research of installing water conservancy diversion partition wall, filter etc. in tundish again, thus change and optimize the flow regime of molten steel further, improve the removal effect of field trash; After the 90's of 20th century, Argon in tundish, uses stirring of inert gas molten steel, promotes molecule is mingled with in steel collision, grows up and float; To 21st century, various molten steel flow control device is widely used.
Such as disclosed in Chinese patent literature CN2863314Y about tundish air blowing shelves dam, wherein relate to and adopt band pressure nitrogen gas in continuous casting production, to form air blowing shelves dam to remove the tundish air blowing gear dam device of steel impurities in water through air brick, relate to a kind of turbulence inhibitor in document CN2863315Y, employing be that access can make by air brick wherein anti-turbulence device by insufflation nitrogen bottom controller.Disclose a kind of continuous casting production with guiding device in Chinese patent literature CN265824Y, this patent is provided with " bottom pouring type " flow-guiding channel between the impact zone and pouring area of tundish.Reduce in steel and be mingled with content, improve the cleannes of molten steel.But due to flow-guiding channel and mozzle smooth interior surfaces, still Inclusion Problem in steel can not be solved.
CN201030436Y discloses a kind of tundish filter, comprises matrix, and matrix is provided with some special-shaped through holes with poly-slag aperture.This special-shaped through hole has the poly-slag aperture of a small-bore directly over clear opening.This filter adds filter bores adsorbance, but processed complex, and poly-slag aperture is easily blocked.
CN 201124222 Y discloses a kind of tundish filter of multiple filtration column combination, adopts on base plate and many Filter columns are housed, form Filter column sub-assembly, and multiple Filter column sub-assembly is superimposed together up and down and forms multiple filtration column combination part.This filter has considered metal fluidity and Impurity removal effect, and everyway improves to some extent, but this apparatus structure relative complex, cost of manufacture is higher, in actual production process, easily broken up layer by molten steel.Disclose a kind of continuous casting production with guiding device in Chinese patent literature CN265824Y, this patent is provided with " bottom pouring type " flow-guiding channel between the impact zone and pouring area of tundish.Reduce in steel and be mingled with content, improve the cleannes of molten steel.But due to flow-guiding channel and mozzle smooth interior surfaces, easily occur turbulent flow during onsite application, slagging-off effect is undesirable, and catheter length is single, easily occurs dross, to being mingled with, removal of floating is unfavorable.
Therefore, in fact there is a kind of demand in prior art, expect that the injection stream molten steel time of staying that can solve tundish extends to some extent; Also expect that the molten steel dead space volume of tundish reduces as far as possible; The metallurgical effect of tundish is improved, improves billet quality.
Summary of the invention
The object of this invention is to provide a kind of specific area increasing current divider unit volume and steel contacts to greatest extent, the probability that raising field trash and current divider collide, on the other hand, substantially improve the nowed forming of molten steel in tundish, the tundish filtration of the impurity effect removed in molten steel, gettering current divider can be improved further.
The object of the invention is to be realized by following technical proposals:
A kind of tundish of the present invention filters, gettering current divider, comprise tundish body, tundish body there are permanent layer and working lining, be arranged on the middle water containing opening on tundish body bottom surface, tundish intrinsic shelves slag wall is set, tundish body is divided into impact zone and pouring area by described shelves slag wall, turbulence inhibitor is positioned at the below of tundish impact area long nozzle, the partial flow filter of the connection impact zone that described pouring area is arranged, it is characterized in that described partial flow filter is arranged on a grade below for slag wall, and by partial flow filter body, be embedded in intrinsic several of partial flow filter formed with the filtration members that through hole is also " V " font or " U " font, described in " V " font or the entrance point of the filtration members of " U " font be arranged on impact zone, and opening upwards, the port of export being the filtration members of " V " font or " U " font is upwards arranged on pouring area with tilting, at described compound one deck adsorption layer in " V " font or on the inwall of the filtration members of " U " font.
Described in " V " font or the filtration members cross section of " U " font be square, circular, ellipse or polygon.
Described in " V " font or the inwall of the filtration members of " U " font be convex-concave structure.
Described convex-concave structure is quincunx or female thread.
Described in V " length of the filtration members of font or " U " font is 100 mm-600mm.
Described in " V " font or the aperture of the filtration members through hole of " U " font be φ 10 mm-90mm.
Described in " V " font or the port of export of the filtration members of " U " font angle that is inclined upwardly be 15 °-35 °, the angle that tilts is 8 °-15 °
The material of described adsorption layer is alumina graphite material, carbon-free material or calcareous material.
Described alumina graphite material (percentage by weight) is Al
2o
3, wherein Al
2o
3content is 46-63 and C content is 8-20.
Described without carbonaceous material (percentage by weight) for ZnO content is 80-85, Al
2o
3content is 80-86, magnesium aluminate spinel or CaO content are 15-23.
Advantage of the present invention is:
1) in tundish, have employed above-mentioned partial flow filter due to of the present invention, in " liquid metals making to enter pouring area forms the collision of stoke phase, allows be mingled with chance collision and grow up;
2) in addition, also because the inwall of filtration members of the present invention adopts convex-concave structure, limits ground increases the specific area of filter unit volume and steel contacts, the probability that raising field trash and filter collide, substantially improve the nowed forming of molten steel in tundish, be conducive to inclusion floating, thus purify hot metal;
3) adsorption layer adopts different sorbing materials, effectively can improve the effect of different liquids metal gettering.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is that filtration members adopts the office of square structure to cut open amplification.
Fig. 4 is that filtration members adopts the office of circular configuration to cut open amplification.
The schematic diagram of Fig. 5 to be the filtration members of partial flow filter of the present invention be U-shaped structure.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As Fig. 1-5 shows, a kind of tundish of the present invention filters, gettering current divider, comprise tundish body 1, tundish body 1 there are permanent layer 7 and working lining 8, be arranged on the middle water containing opening 9 on tundish body 1 bottom surface, tundish intrinsic shelves slag wall 2 is set, tundish body 1 is divided into impact zone and pouring area by described shelves slag wall 2, turbulence inhibitor 3 is positioned at the below of tundish impact area long nozzle 4, the partial flow filter of the connection impact zone that described pouring area is arranged, it is characterized in that described partial flow filter is arranged on a grade below for slag wall 2, and by partial flow filter body 5, several being embedded in partial flow filter body 5 formed with through hole and in the filtration members 6 of " V " font or " U " font, described in " V " font or the entrance point of the filtration members 6 of " U " font be arranged on impact zone, and opening upwards, the port of export being the filtration members 6 of " V " font or " U " font is upwards arranged on pouring area with tilting, at described compound one deck adsorption layer 6-1 in " V " font or on the inwall of the filtration members 6 of " U " font.
Preferably, the material of adsorption layer 6-1 of the present invention is alumina graphite material, carbon-free material or calcareous material.
Described alumina graphite material (percentage by weight) is Al
2o
3, wherein Al
2o
3content is 46-63 and C content is 8-20.
Described without carbonaceous material (percentage by weight) for ZnO content is 80-85, Al
2o
3content is 80-86, magnesium aluminate spinel or CaO content are 15-23.
When straight carbon steel, the high-carbon steel of casting metal: the adsorption layer 6-1 selecting alumina graphite material.
When the high-quality steel of casting metal: select Al
2o
3content is the adsorption layer 6-1 of 80-86 or magnesium aluminate spinel.
When the clean steel of casting metal: select calcareous CaO content to be the adsorption layer 6-1 of 15-23 or carbon-free material.
The setting of adsorption layer 6-1 of the present invention improves the effect of adsorbing and being mingled with effectively.
Preferably, the filtration members 6 in " V " font or " U " font of the present invention can be square, circular, ellipse or polygon.According to casting metal characteristic deoxidation system, filtration members can be designed to square, circular, oval or polygon.
Fig. 3 gives filtration members and adopts the office of square structure to cut open Fang great Tu, and straight carbon steel, high-carbon steel can select the filtration members 6 of circle or ellipse; Square or polygonal filtration members 6 selected by high-quality steel or clean steel.
Preferably, the inwall of the filtration members 6 in " V " font or " U " font of the present invention is convex-concave structure.Described convex-concave structure is quincunx or female thread.Fig. 4 gives filtration members employing circular configuration and enlarged drawing cuts open in the office that inwall is convex-concave structure, inwall be convex-concave structure limits increase the specific area of filter unit volume and steel contacts, the probability that raising field trash and filter collide, substantially improve the nowed forming of molten steel in tundish, be conducive to inclusion floating, thus purify hot metal.
Preferably, the length of the filtration members 6 in " V " font or " U " font of the present invention is 100 mm-600mm.High-quality steel selects length to be the filtration members of 260-300 mm, and clean steel selects length to be the filtration members of 300-600mm, and straight carbon steel selects length to be the filtration members of 100-300mm.
Preferably, described in " V " font or the aperture of filtration members 6 through hole of " U " font be φ 10 mm-90mm, the size in its aperture is determined according to the section of Blang's collision, velocity gradient collision, Stokes collision and strand, mouth of a river diameter, cast steel grade.During cast high-quality steel, the aperture of filtration members 6 through hole adopts φ 60 mm-φ 68 mm; During cast clean steel, the aperture of filtration members 2 through hole adopts φ 70mm-φ 90 mm; During cast straight carbon steel, the aperture of filtration members 2 through hole adopts φ 10 mm-φ 60 mm.
Described in " V " font or the port of export of the filtration members 6 of " U " font angle that is inclined upwardly be 15 °-35 °, the angle that tilts is 8 °-15 °, when pouring basket liquid level is higher than 1.3 meters, the port of export of the filtration members in " V " font or " U " font angle that is inclined upwardly is 12 °-35 °; When middle water containing opening diameter is greater than φ 65mm, the port of export of the filtration members 6 in " V " font or " U " font and middle water containing opening form the angle of inclination of 8 °-12 °, when middle water containing opening diameter is less than φ 65mm, the port of export of the filtration members 6 in " V " font or " U " font and middle water containing opening form the angle of inclination of 10 °-15 °.
The present invention is also applicable to the cast of other liquid metal.
Claims (10)
1. a tundish filters, gettering current divider, comprise tundish body, tundish body there are permanent layer and working lining, be arranged on the middle water containing opening on tundish body bottom surface, tundish intrinsic shelves slag wall is set, tundish body is divided into impact zone and pouring area by described shelves slag wall, turbulence inhibitor is positioned at the below of tundish impact area long nozzle, the partial flow filter of the connection impact zone that described pouring area is arranged, it is characterized in that described partial flow filter is arranged on a grade below for slag wall, by partial flow filter body, be embedded in intrinsic several of partial flow filter formed with the filtration members that through hole is also " V " font or " U " font, described in " V " font or the entrance point of the filtration members of " U " font be arranged on impact zone, and opening upwards, the port of export being the filtration members of " V " font or " U " font is upwards arranged on pouring area with tilting, compound one deck adsorption layer on the inwall of described " V " font or " U " font filtration members.
2. tundish according to claim 1 filter, gettering current divider, it is characterized in that described in " V " font or the filtration members cross section of " U " font be square, circular, ellipse or polygon.
3. tundish according to claim 1 filter, gettering current divider, it is characterized in that described in " V " font or the inwall of the filtration members of " U " font be convex-concave structure.
4. tundish filtration according to claim 3, gettering current divider, is characterized in that described convex-concave structure is quincunx or female thread.
5. tundish according to claim 1 filter, gettering current divider, it is characterized in that described in " V " font or the length of the filtration members of " U " font be 100 mm-600mm.
6. tundish according to claim 1 filter, gettering current divider, it is characterized in that described in " V " font or the aperture of the filtration members through hole of " U " font be φ 10 mm-90mm.
7. tundish according to claim 1 filter, gettering current divider, it is characterized in that be the port of export of the filtration members of " V " font or " U " font angle that is inclined upwardly be 15 °-35 °, the angle that tilts is 8 °-15 °.
8. tundish filtration according to claim 1, gettering current divider, is characterized in that the material of described adsorption layer is alumina graphite material, carbon-free material or calcareous material.
9. tundish filtration according to claim 8, gettering current divider, is characterized in that described alumina graphite material (percentage by weight) is Al
2o
3, wherein Al
2o
3content is 46-63 and C content is 8-20.
10. tundish according to claim 8 filter, gettering current divider, it is characterized in that described without carbonaceous material (percentage by weight) for ZnO content is 80-85, Al
2o
3content is 80-86, magnesium aluminate spinel or CaO content are 15-23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776974.9A CN104439136A (en) | 2014-12-17 | 2014-12-17 | Impurity filtering and absorbing flow divider for tundish |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776974.9A CN104439136A (en) | 2014-12-17 | 2014-12-17 | Impurity filtering and absorbing flow divider for tundish |
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|---|---|
| CN104439136A true CN104439136A (en) | 2015-03-25 |
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|---|---|---|---|
| CN201410776974.9A Pending CN104439136A (en) | 2014-12-17 | 2014-12-17 | Impurity filtering and absorbing flow divider for tundish |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921735A (en) * | 2016-06-15 | 2016-09-07 | 江苏华能冶金工程技术有限公司 | Tundish gettering filter |
| CN106077602A (en) * | 2016-06-12 | 2016-11-09 | 江苏华能冶金工程技术有限公司 | Tundish gettering filter |
| CN106493347A (en) * | 2016-10-25 | 2017-03-15 | 华北理工大学 | Continuous casting tundish quick-change nozzle and the method with its dross inclusion adsorption |
| CN108637200A (en) * | 2018-04-03 | 2018-10-12 | 东北大学 | The long flat bloom semi-continuous casting device of big specification magnesium alloy |
| WO2019184647A1 (en) * | 2018-03-30 | 2019-10-03 | 宝山钢铁股份有限公司 | Flow-controllable tundish structure capable of filtering inclusions in molten steel |
| CN114472872A (en) * | 2022-04-15 | 2022-05-13 | 北京利尔高温材料股份有限公司 | Filtering type current stabilizer, preparation method thereof and double-current rectangular tundish |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077602A (en) * | 2016-06-12 | 2016-11-09 | 江苏华能冶金工程技术有限公司 | Tundish gettering filter |
| CN105921735A (en) * | 2016-06-15 | 2016-09-07 | 江苏华能冶金工程技术有限公司 | Tundish gettering filter |
| CN106493347A (en) * | 2016-10-25 | 2017-03-15 | 华北理工大学 | Continuous casting tundish quick-change nozzle and the method with its dross inclusion adsorption |
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| JP7171756B2 (en) | 2018-03-30 | 2022-11-15 | 宝山鋼鉄股▲分▼有限公司 | Flow control type tundish structure that can filter inclusions in molten steel |
| CN108637200B (en) * | 2018-04-03 | 2019-12-24 | 东北大学 | Large-size magnesium alloy long slab ingot semi-continuous casting device |
| CN108637200A (en) * | 2018-04-03 | 2018-10-12 | 东北大学 | The long flat bloom semi-continuous casting device of big specification magnesium alloy |
| CN114472872A (en) * | 2022-04-15 | 2022-05-13 | 北京利尔高温材料股份有限公司 | Filtering type current stabilizer, preparation method thereof and double-current rectangular tundish |
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Application publication date: 20150325 |