CN104107905A - Slab continuous casting tundish - Google Patents
Slab continuous casting tundish Download PDFInfo
- Publication number
- CN104107905A CN104107905A CN201310139540.3A CN201310139540A CN104107905A CN 104107905 A CN104107905 A CN 104107905A CN 201310139540 A CN201310139540 A CN 201310139540A CN 104107905 A CN104107905 A CN 104107905A
- Authority
- CN
- China
- Prior art keywords
- dam
- slag
- slag stopping
- tundish
- weir
- 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.)
- Pending
Links
- 238000009749 continuous casting Methods 0.000 title abstract 5
- 239000002893 slag Substances 0.000 claims abstract description 100
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 84
- 239000010959 steel Substances 0.000 claims abstract description 84
- 238000007747 plating Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000013459 approach Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 230000007704 transition Effects 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 8
- 239000011449 brick Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
The invention discloses a slab continuous casting tundish, and relates to smelting tundishes. By the aid of the slab continuous casting tundish, the problem of poor slag stopping effects of existing tundishes can be solved. The slab continuous casting tundish comprises a steel ladle, a first slag stopping weir, a first slag stopping dam, a second slag stopping weir, a second slag stopping dam and a molten steel outlet. The first slag stopping weir is fixed to a molten steel inlet side of the steel ladle, and a gap is reserved between the bottom of the first slag stopping weir and an inner bottom plate of the steel ladle; the first slag stopping dam is fixed to the rear of the first slag stopping weir, the bottom of the first slag stopping dam is connected with the inner bottom plate of the steel ladle, and the first slag stopping dam is higher than the gap at the bottom of the first slag stopping weir; the second slag stopping weir is fixed to the rear of the first slag stopping dam, and a gap is reserved at the bottom of the second slag stopping weir; the second slag stopping dam is fixed to the rear of the second slag stopping weir, the bottom of the second slag stopping dam is connected with the inner bottom plate of the steel ladle, and the second slag stopping dam is higher than the gap at the bottom of the second slag stopping weir; the molten steel outlet is formed in the bottom of the steel ladle and is positioned at the rear of the second slag stopping dam. The slab continuous casting tundish has the advantages that the tundish is additionally provided with the second slag stopping weir as compared with an existing tundish, accordingly, flowing properties of molten steel in the tundish can be changed, the molten steel in a transition region is in a laminar flow state instead of a turbulent flow state, slag and inclusions can float on the surface of the molten steel and can be stopped by the slag stopping weirs and the slag stopping dams, the quality of the molten steel can be improved, and slag stopping effects can reach 95% at least.
Description
Technical field
The present invention relates to the tundish of special smelting, refer in particular to a kind of slab CC tundish.
Background technology
Existing slab CC tundish structure is referring to Fig. 1-Fig. 2, and its structure is as follows:
Contain the ladle 11 that carries molten steel, in the middle of it, be provided with refractory lining;
In ladle 11, enter molten steel one side and fix slag weir 12 one, its top approaches the bag mouth of ladle 11, and the inner bottom plating of bottom and ladle 11 has a gap, and the slag in molten steel is stopped;
Slag weir 12 in ladle 11 is fixed two dams separated by a distance 131 below, 132, dam bottom is fixedly connected with the inner bottom plating of ladle 11, further to stop the slag in molten steel, approach the height of the first dam 131 of slag weir 12 a little more than the gap of slag weir 12 bottoms, after the height of second dam 132 a little more than the height of the first dam 131;
The bottom that goes out molten steel one side in ladle 11 is provided with a molten steel outlet 14.
Referring to Fig. 3, in Fig. 3, two point dotted arrow is the flow line of existing tundish molten steel when cast, during cast, (the region before slag weir 12 in tundish I district, this region is impact zone) top enters molten steel, by the gap of dreg blocking weir 12, molten steel flows into the (region between the first dam 131 and the second dam 132, tundish II district, this region is transition region), when molten steel is after two dams are full of, flow into tundish III district (region after the second dam 132, this region is pouring area), molten steel is poured into a mould by molten steel outlet 14.
In above-mentioned I district (impact zone), molten steel is in turbulent condition, molten steel and bits mix, bulk bits can float liquid level, granule bits are involved in II district (transition region) because of turbulent flow, Ⅱ district steel flow is longer through route, the floating upper molten steel surface of bulk bits, in HeⅢ district, DanⅡ district (pouring area), MOLTEN STEEL FLOW remains turbulent flow and half turbulent, the mobile molten steel in molten steel outlet 14 tops, III district easily forms vortex, bits are involved in crystallizer or steel ingot by molten steel outlet 14, especially in the cast later stage, the bits that float over molten steel surface are involved in molten steel outlet 14 together with molten steel, produce slag inclusion.
Existing this tundish can pushing off the slag at the cast initial stage, interstage can be kept off large inclusions, and granule field trash (being less than the bits in slag blocking wall and dam gap) can flow into III district (pouring area) by slag weir gap and dam, in casting process, flowing in turbulent flow and half turbulent of molten steel outlet top molten steel, tundish is in rushing full state, granule bits are easily involved in molten steel outlet, enter in ingot mould or in crystallizer, after solidifying, cause and be mingled with, therefore this structure pushing off the slag effect is poor.
Summary of the invention
The object of the invention is the problem existing in order to overcome prior art, provide a kind of and can improve tundish pushing off the slag effect, reduce field trash (slag inclusion) and flow into molten steel outlet, improve the slab CC tundish of casting quality.
The object of the invention is to be achieved through the following technical solutions:
A slab CC tundish, it comprises:
Ladle, contains and carries molten steel, is provided with refractory lining in the middle of it;
The first slag weir, is first slag blocking wall, is fixed in ladle and enters molten steel one side, and top approaches the bag mouth of ladle, and the inner bottom plating of bottom and ladle has a gap;
The first dam, be fixed on described the first slag weir below and the distance of being separated by, its bottom is fixedly connected with the inner bottom plating of ladle, it is highly higher than the height of the first slag weir bottom gap;
The second slag weir, is second slag blocking wall, be fixed on described the first dam after, first slag weir of being separated by has a distance, top approaches the bag mouth of ladle, the inner bottom plating of bottom and ladle has a gap;
The second dam, be fixed on described the second slag weir below and the distance of being separated by, its bottom is fixedly connected with the inner bottom plating of ladle, it is highly higher than the height of the second slag weir bottom gap;
Molten steel outlet, is located at described the second dam ladle bottom distance of being separated by below.
The be separated by distance of the first slag weir of described the second slag weir is L
3, L
3=500-2000mm.
The bottom gap height of described the second slag weir is H
2, H
2=30-100mm.
The height of the aspect ratio second slag weir bottom gap of described the second dam exceeds H
1distance, H
1=20-100mm.
Distance between described the second dam and the second slag weir is L
1, L
1=20-100mm.
Described molten steel outlet second dam of being separated by has L
2distance, L
2=200-1000mm, its diameter D=30-70mm.
Described the second dam is higher than the first dam 2-10 millimeter.
Distance between described the second slag weir and the second dam is less than the distance 1-10 millimeter between the first slag weir and the first dam.
The upper end of described the first dam and the second dam is respectively circular arc.
Described ladle is respectively equipped with overfall in two side bottoms of two dams.
Beneficial effect of the present invention:
Slab CC tundish of the present invention has increased by one slag weir (slag blocking wall) than existing tundish, thereby changed the character of MOLTEN STEEL FLOW in tundish, molten steel becomes laminar flow regime in transition region by turbulent, bits and inclusion floating are blocked by slag weir and dam to molten steel surface, improved steel quality, pushing off the slag effect reaches more than 95%.
For further illustrating above-mentioned purpose of the present invention, design feature and effect, below with reference to accompanying drawing, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing slab CC tundish;
Fig. 2 is the schematic top plan view of Fig. 1;
When Fig. 3 is Fig. 1 basket pouring, molten steel flows to schematic diagram;
Fig. 4 is the structural representation of slab CC tundish of the present invention;
When Fig. 5 is Fig. 4 basket pouring, molten steel flows to schematic diagram.
The specific embodiment
Accompanying drawing below in conjunction with embodiment is elaborated to the specific embodiment of the present invention.
Referring to Fig. 4-Fig. 5, slab CC tundish of the present invention comprises:
Ladle 21, contains and carries molten steel, is provided with refractory lining in the middle of it;
The first slag weir 221, is first slag blocking wall, is fixed in ladle 21 and enters molten steel one side, and top approaches the bag mouth of ladle 21, and the inner bottom plating of bottom and ladle 21 has a gap, and the slag in molten steel is stopped;
The first dam 231, be fixed on described the first slag weir 221 below and the distance of being separated by, its height is a little more than the height of slag weir 12 bottom gaps, bottom is fixedly connected with the inner bottom plating of ladle 21;
The second slag weir 222, is second slag blocking wall, be fixed on described the first dam 231 after, first slag weir 221 of being separated by has L
3distance, L
3=500-2000mm, top approaches the bag mouth of ladle 21, and the inner bottom plating of bottom and ladle 21 has a gap, and the slag in molten steel is further stopped, and the bottom gap height of the second slag weir 222 is H
2, H
2=30-100mm;
The second dam 232, be fixed on described the second slag weir 222 after, bottom is fixedly connected with the inner bottom plating of ladle 21, its second slag weir 222 of being separated by has L
1distance, L
1=20-100mm, it highly exceeds the second slag weir 222 bottom gap H
1distance, H
1=20-100mm;
Molten steel outlet 24, is located at described the second dam 232 ladle 21 bottoms below, with the distance of the second dam 232 be L
2, L
2=200-1000mm, its diameter D=30-70mm.
In Fig. 5, two point dotted arrow is the flow line of tundish of the present invention molten steel when cast.During cast, in top, tundish I district (impact zone), enter molten steel, by gap and first dam 231 of the first slag weir 221, molten steel flows into tundish II district (transition region), again by gap and second dam 232 of the second slag weir 222, molten steel flows into tundish III district (pouring area), and molten steel carries out slab cast by molten steel outlet 24.
Tundish of the present invention the cast initial stage be molten steel height while just having surpassed the second dam 232 molten steel in turbulent condition, bits between the second slag weir 222 and the second dam 232 are along with molten steel floating flows into tundish III district, enter molten steel outlet 24, but molten steel is higher than second layer dam with at tundish during in full state, tundish II district (transition region) between twice dreg blocking weir and shelves slag dam, MOLTEN STEEL FLOW is in laminar condition, bits and large inclusions floating, between twice dam, distance is more greatly that space larger bits floating effect is better, it is only the bits that enter between dreg blocking weir and dam when liquid steel level just surpasses second dam at the cast initial stage that bits flow into bits in crystallizer or steel ingot, after liquid steel level is higher than second dam, bits will float up to liquid level in laminar condition and difference in specific gravity because of molten steel.This structure shelves slag effect is better than existing structure, and the bits of building up between dam are stayed in tundish after cast finishes, and do not flow into molten steel outlet.
The second dam 232 outlines, higher than the first dam 231, are advisable with high 2-10 millimeter; Cast initial stage Dang Zhaqiangjian II district liquid steel level height, greater than or equal to I district liquid level, reduces the time that liquid steel level forms gradient, accelerates bits floating.
Steel flow is when slag weir and dam, resistance increment, the resistance coefficient between per pass dam and slag weir doubles, therefore, the second slag weir 222 and the second dam 232 spacing are less than the first slag weir 221 and the first dam 231 spacing, with little 1-10 millimeter, are advisable.
The upper end of the first dam 231 and the second dam 232 is done respectively in the arc-shaped, does not produce whirlpool while being conducive to MOLTEN STEEL FLOW.
Slag blocking wall and dam adopt embedded structure, on the refractory brick of building formula tundish bottom and side by laying bricks or stones, manufacture with groove formula structure, and when tundish is built by laying bricks or stones, slag blocking wall and dam are directly set in groove, simple to operation.
Tundish overfall is set: two dam two side bottoms at ladle arrange respectively overfall (not shown), the cast later stage, after liquid steel level is lower than the second dam, need be emitted the residue molten steel of tundish, prevents that cast from finishing the left molten steel of rear tundish.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for object of the present invention is described, and not as limitation of the invention, as long as in essential scope of the present invention, the variation of the above embodiment, modification all will be dropped in the scope of claim of the present invention.
Claims (10)
1. a slab CC tundish, is characterized in that comprising:
Ladle, contains and carries molten steel, is provided with refractory lining in the middle of it;
The first slag weir, is first slag blocking wall, is fixed in ladle and enters molten steel one side, and top approaches the bag mouth of ladle, and the inner bottom plating of bottom and ladle has a gap;
The first dam, be fixed on described the first slag weir below and the distance of being separated by, its bottom is fixedly connected with the inner bottom plating of ladle, it is highly higher than the height of the first slag weir bottom gap;
The second slag weir, is second slag blocking wall, be fixed on described the first dam after, first slag weir of being separated by has a distance, top approaches the bag mouth of ladle, the inner bottom plating of bottom and ladle has a gap;
The second dam, be fixed on described the second slag weir below and the distance of being separated by, its bottom is fixedly connected with the inner bottom plating of ladle, it is highly higher than the height of the second slag weir bottom gap;
Molten steel outlet, is located at described the second dam ladle bottom distance of being separated by below.
2. slab CC tundish as claimed in claim 1, is characterized in that:
The be separated by distance of the first slag weir of described the second slag weir is L
3, L
3=500-2000mm.
3. slab CC tundish as claimed in claim 1, is characterized in that:
The bottom gap height of described the second slag weir is H
2, H
2=30-100mm.
4. slab CC tundish as claimed in claim 1, is characterized in that:
The height of the aspect ratio second slag weir bottom gap of described the second dam exceeds H
1distance, H
1=20-100mm.
5. slab CC tundish as claimed in claim 1, is characterized in that:
Distance between described the second dam and the second slag weir is L
1, L
1=20-100mm.
6. slab CC tundish as claimed in claim 1, is characterized in that:
Described molten steel outlet second dam of being separated by has L
2distance, L
2=200-1000mm, its diameter D=30-70mm.
7. slab CC tundish as claimed in claim 1, is characterized in that:
Described the second dam is higher than the first dam 2-10 millimeter.
8. slab CC tundish as claimed in claim 1, is characterized in that:
Distance between described the second slag weir and the second dam is less than the distance 1-10 millimeter between the first slag weir and the first dam.
9. slab CC tundish as claimed in claim 1, is characterized in that:
The upper end of described the first dam and the second dam is respectively circular arc.
10. slab CC tundish as claimed in claim 1, is characterized in that:
Described ladle is respectively equipped with overfall in two side bottoms of two dams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139540.3A CN104107905A (en) | 2013-04-19 | 2013-04-19 | Slab continuous casting tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310139540.3A CN104107905A (en) | 2013-04-19 | 2013-04-19 | Slab continuous casting tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104107905A true CN104107905A (en) | 2014-10-22 |
Family
ID=51705001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310139540.3A Pending CN104107905A (en) | 2013-04-19 | 2013-04-19 | Slab continuous casting tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104107905A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041042A (en) * | 2016-08-18 | 2016-10-26 | 四川西南不锈钢有限责任公司 | Special-shaped stainless steel continuous casting tundish |
| CN107042371A (en) * | 2017-04-11 | 2017-08-15 | 浙江亚通焊材有限公司 | A kind of silver solder alloy vacuum melting casting purification filtering mouthful |
| CN110328356A (en) * | 2019-08-28 | 2019-10-15 | 庄小梅 | A kind of dry materials liner in dundish of reserved weir plate slot is with releasing the explosion-proof pipe mold of slag |
| CN110802222A (en) * | 2018-08-06 | 2020-02-18 | 宝钢特钢有限公司 | Vacuum induction pouring tundish |
| CN111496242A (en) * | 2020-05-09 | 2020-08-07 | 南通大学 | Turbulent flow type aluminum alloy melt deslagging and filtering device and using method thereof |
| CN114734031A (en) * | 2022-04-11 | 2022-07-12 | 成都先进金属材料产业技术研究院股份有限公司 | Pouring chute of vacuum induction furnace and pouring method of vacuum induction smelting |
| CN116274982A (en) * | 2023-02-27 | 2023-06-23 | 首钢集团有限公司 | A tundish and a method for controlling continuous pouring of different steel types in the tundish |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4961563A (en) * | 1989-06-12 | 1990-10-09 | Inco Alloys International, Inc. | Tundish for ingot pouring |
| CN201249259Y (en) * | 2008-06-05 | 2009-06-03 | 广州珠江钢铁有限责任公司 | Slab continuous casting tundish |
| CN102744394A (en) * | 2012-07-26 | 2012-10-24 | 莱芜钢铁集团有限公司 | Flow control device for tundish of slab continuous caster and deslagging method thereof |
| CN202779748U (en) * | 2012-10-24 | 2013-03-13 | 通化钢铁股份有限公司 | Flow control device for sheet billet continuous casting tundish |
-
2013
- 2013-04-19 CN CN201310139540.3A patent/CN104107905A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4961563A (en) * | 1989-06-12 | 1990-10-09 | Inco Alloys International, Inc. | Tundish for ingot pouring |
| CN201249259Y (en) * | 2008-06-05 | 2009-06-03 | 广州珠江钢铁有限责任公司 | Slab continuous casting tundish |
| CN102744394A (en) * | 2012-07-26 | 2012-10-24 | 莱芜钢铁集团有限公司 | Flow control device for tundish of slab continuous caster and deslagging method thereof |
| CN202779748U (en) * | 2012-10-24 | 2013-03-13 | 通化钢铁股份有限公司 | Flow control device for sheet billet continuous casting tundish |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041042A (en) * | 2016-08-18 | 2016-10-26 | 四川西南不锈钢有限责任公司 | Special-shaped stainless steel continuous casting tundish |
| CN107042371A (en) * | 2017-04-11 | 2017-08-15 | 浙江亚通焊材有限公司 | A kind of silver solder alloy vacuum melting casting purification filtering mouthful |
| CN110802222A (en) * | 2018-08-06 | 2020-02-18 | 宝钢特钢有限公司 | Vacuum induction pouring tundish |
| CN110802222B (en) * | 2018-08-06 | 2021-03-23 | 宝武特种冶金有限公司 | Vacuum induction pouring tundish |
| CN110328356A (en) * | 2019-08-28 | 2019-10-15 | 庄小梅 | A kind of dry materials liner in dundish of reserved weir plate slot is with releasing the explosion-proof pipe mold of slag |
| CN111496242A (en) * | 2020-05-09 | 2020-08-07 | 南通大学 | Turbulent flow type aluminum alloy melt deslagging and filtering device and using method thereof |
| CN114734031A (en) * | 2022-04-11 | 2022-07-12 | 成都先进金属材料产业技术研究院股份有限公司 | Pouring chute of vacuum induction furnace and pouring method of vacuum induction smelting |
| 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 |
| CN116274982A (en) * | 2023-02-27 | 2023-06-23 | 首钢集团有限公司 | A tundish and a method for controlling continuous pouring of different steel types in the tundish |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104107905A (en) | Slab continuous casting tundish | |
| CN206622605U (en) | A kind of three machines three stream slab CC tundish | |
| CN102825229A (en) | Flow control structure for preventing vortexes from being generated in tundish | |
| CN102398004A (en) | Sliding nozzle device to prevent vortex generation | |
| CN202845761U (en) | Novel tundish for highly purified liquid steel | |
| CN104226936B (en) | Purification device and purification method for tundish molten steel | |
| CN102554207A (en) | Sliding water gap device capable of preventing vortex | |
| CN103357831B (en) | The multi-functional current stabilization of a kind of tundish impacts bucket and building method thereof | |
| CN208628416U (en) | A dual-flow slab tundish flow control element | |
| CN202356599U (en) | Slide gate nozzle device for preventing occurrence of vortex | |
| JP5516235B2 (en) | Manufacturing method of high cleanliness steel slab by continuous casting | |
| CN103231048B (en) | High pulling rate FTSC crystallizer for continuous casting of thin slabs four cellular type submersed nozzles | |
| CN205587639U (en) | Package in middle of modified steelmaking continuous casting | |
| CN206794743U (en) | M type slag blocking walls for continuous casting production | |
| CN203778726U (en) | 12-strand conticaster tundish with reasonable flow-dividing function | |
| CN201603863U (en) | Hot rolling continuous casting tundish | |
| CN102794445B (en) | Slab continuous casting submerged nozzle | |
| CN105618727A (en) | Long nozzle for improving fluid flow of tundish and weakening impact of injection to ladle bottom of tundish | |
| CN217412429U (en) | Six-flow tundish capable of improving flow consistency of various flows | |
| CN202045364U (en) | Continuous casting tundish pocket brick and continuous casting tundish comprising same | |
| CN202527699U (en) | Slide gate nozzle device preventing vortex from being produced | |
| CN201132206Y (en) | Turbulence controller for horizontal continuous casting tundish | |
| CN203209684U (en) | Six-hole submerged nozzle for pouring large square blank | |
| CN102554206A (en) | Tundish structure capable of decreasing casting blank inclusions | |
| CN107321924A (en) | A kind of semi-portable double cast gate basin combining structure and combinations thereof application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141022 |
|
| RJ01 | Rejection of invention patent application after publication |