CN110270679A - A kind of stream of bloom four tundish - Google Patents
A kind of stream of bloom four tundish Download PDFInfo
- Publication number
- CN110270679A CN110270679A CN201910628652.2A CN201910628652A CN110270679A CN 110270679 A CN110270679 A CN 110270679A CN 201910628652 A CN201910628652 A CN 201910628652A CN 110270679 A CN110270679 A CN 110270679A
- Authority
- CN
- China
- Prior art keywords
- tundish
- molten steel
- bloom
- flows
- conservancy diversion
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 66
- 239000010959 steel Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 230000035939 shock Effects 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims abstract description 5
- 230000000994 depressogenic effect Effects 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000010813 municipal solid waste Substances 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of blooms four to flow tundish, belong to technical field of metallurgical equipment, pass through the second part by two water conservancy diversion dams settings at the first part being parallel to each other and bending extension, increase molten steel shock zone, so that shock zone molten steel speed is smaller, reduce molten steel to wash away barricade and containment wall, while the field trash in molten steel can be made further to remove in impact zone.Molten steel is after deflector hole outflow, first reach pouring basket liquid level, rear portion stream stock formed in tundish it is large range of circulate, make from two mouths of a river flow out molten steel component and temperature reach unanimity, the floating for being conducive to field trash in molten steel removes, and promotes capabilities exchange between molten steel；Another part stream stock flows to the edge mouth of a river along liquid level, molten steel above water outlet is avoided to stagnate, it can also be seen that, bulk velocity is improved significantly in tundish from velocity field, and speed increases above the edge mouth of a river, can effectively reduce the dead space volume of corner areas and entire tundish.
Description
Technical field
The invention belongs to technical field of metallurgical equipment, and in particular to a kind of stream of bloom four tundish.
Background technique
Trough casting is the intermediate link of STEELMAKING PRODUCTION process, and is the linking that continuous operation is turned to by intermittently operated
Point is the important link for improving output of steel and quality.No matter going on smoothly for continuous casting operation, or for guarantee steel billet matter
Amount, the effect of tundish is all very important.
The cleannes of molten steel not only can be improved in tundish metallurgy purification function, prevent molten steel secondary oxidation；Also it can be reduced
Heat loss finely tunes molten steel temperature；Improve steel liquid flow state, mitigates the erosion to refractory material, prevents slag；Increase molten steel to exist
Residence time in tundish promotes inclusion floating etc. in molten steel.
Under former tundish arrangement, after the molten steel flowed out from positive deflector hole reaches intermediate containment wall, a part stream stock is in
Between packet middle part be whirled up, flow to liquid level, coverture is easy to be rushed to open the secondary oxidation for causing molten steel；Another part stream stock is in
Between containment wall flow to water outlet, this part flow plume speed slowly, it is very poor to the stirring effect of molten steel in tundish, be unfavorable for uniform steel
Liquid temperature and ingredient, quickly, tundish overall temperature difference is very big for temperature drop in tundish, and has to containment wall among front and continue
Wash away, influence the service life of tundish；Meanwhile from velocity field it can also be seen that, molten steel flow velocity is slower under former tundish structure,
So as to cause biggish dead space volume in tundish, there are local temperatures to cross low area for mouth of a river upper end on the outside, may lead
It causes to tie cold steel；Molten steel temperature gradient is very big in tundish, and each mouth of a river tapping temperature differs greatly.In particular by four stream production items
Under part, continues to continue to use former tundish structure and be unfavorable for that molten steel temperature in tundish is uniform, and tundish each mouth of a river response time stops
Time is shorter, and dead space volume is excessive, is unfavorable for the production of high quality slab, it is difficult to meet the needs of variety steel production, urgently
Pending optimization.
Summary of the invention
Goal of the invention: in order to overcome the drawbacks of the prior art, the present invention provides a kind of bloom four and flows tundish, among this
Wrap in temperature field be improved significantly, be conducive to improve slab quality and produce direct motion.
Technical solution: a kind of bloom four of the present invention flows tundish, including the first side wall, second sidewall and
It is formed in the long and narrow packet bottom between the first side wall and second sidewall；The middle position of the first side wall has to be recessed outward
Depressed section；The packet bottom is provided at four mouths of a river that its length direction is successively arranged, and is set between two mouths of a river placed in the middle
Water conservancy diversion barricade there are two setting, the bottom of two water conservancy diversion barricades is all connected with the packet bottom；The water conservancy diversion barricade has interconnected
The first part of first part and second part, two water conservancy diversion barricades is parallel to each other and is vertically connected at described second side
The second part of wall, two water conservancy diversion barricades extends and is connected to the two of the depressed section from its first part's outward bending
Side edge；There are two deflector hole, the Inside To Outside of described two deflector holes from first part is oblique for setting in the first part
It upwardly extends；Molten steel shock zone is formed between two water conservancy diversion barricades, is arranged in the molten steel shock zone, at depressed section
There is the flow straightener for current stabilization and buffering molten steel.
Wherein, it is additionally provided with dam, the dam is between the mouth of a river placed in the middle and the mouth of a river of edge, dam bottom and institute
The connection of packet bottom is stated, the both ends of dam are separately connected the first side wall and the second sidewall.
Further, through hole is provided in the dam, the through hole is arranged by the first side wall.
The flow straightener has recessed dashpot, and the inside dimension of the dashpot is big compared with its opening size.
Buffer platform is provided on the outside of the flow straightener, the buffer platform is from the depressed section to two described
Extend between a part, and forms the buffering slope having a down dip between Liang Ge first part.
Two deflector holes of the water conservancy diversion barricade are respectively the first deflector hole and the second deflector hole, the first water conservancy diversion hole location
Between second deflector hole and second sidewall.
Further, the diameter of first deflector hole is small compared with the diameter of second deflector hole.
Further, the height of the height of first deflector hole second deflector hole is low.
Preferably, the angle that raises up of the deflector hole is 30 °.
The utility model has the advantages that the tundish is by the first part being parallel to each other and bending extension for two water conservancy diversion dams settings
Second part, increase molten steel shock zone, so that shock zone molten steel speed is smaller, reduces molten steel and barricade and containment wall are rushed
Brush, while the field trash in molten steel can be made further to remove in impact zone.Molten steel first reaches intermediate after deflector hole outflow
Packet liquid level, rear portion stream stock formed in tundish it is large range of circulate, make from two mouths of a river flow out molten steel at
Divide and temperature reaches unanimity, the floating for being conducive to field trash in molten steel removes, and promotes capabilities exchange between molten steel；Another part stream stock
The edge mouth of a river is flowed to along liquid level, avoids molten steel above water outlet from stagnating, the dead space volume of corner areas can be effectively reduced.From
Velocity field it can also be seen that, bulk velocity is improved significantly in tundish, and the edge mouth of a river above speed increase, to significantly change
The dead space volume being apt in tundish.
Detailed description of the invention
Fig. 1 is tundish overlooking structure diagram of the invention；
Fig. 2 be Fig. 1 tundish along A-A to cross-sectional view；
Fig. 3 is the tundish of Fig. 1 from the perspective view of the first side wall；
Fig. 4 is the velocity field photo of tundish.
Specific embodiment
In the following, being described in further details in conjunction with attached drawing to the present invention.
A kind of bloom four of the invention flows tundish, is mainly changed to U-shaped/V-type slag blocking wall of existing tundish in parallel
Big spacing L-type water conservancy diversion barricade, the molten steel of molten steel shock zone is guided to by mouth of a river region by the deflector hole being arranged thereon, together
Shi Zengjia flow straightener and dam.So that bulk temperature field difference is obviously reduced in improved tundish, molten steel temperature uniformity
It is obviously improved；Meanwhile molten steel flow velocity is improved in tundish, velocity field significantly improves.
Specifically, as shown in Figure 1-3, the tundish includes the first side wall 1, second sidewall 2 and is formed in the first side wall
Long and narrow packet bottom 3 between 1 and second sidewall 2.Wrapping setting on bottom 3, there are four the mouth of a river 4, length of this four mouths of a river 4 at packet bottom 3
It successively arranges on direction.
Two water conservancy diversion barricades 5, the depressed section 11 of the first side wall 1 and second sidewall 1 surround to form molten iron shock zone
6.The flow straightener 7 of molten steel is provided with for current stabilization and buffered in the molten iron shock zone 6, by the position of depressed section 11, surely
The height for flowing device 7 is 245mm.The flow straightener 7 has recessed dashpot 71, and dashpot 71 is that be connected to up and down two are flat just
Cube chamber composition, the square fluid chamber positioned at lower part is more wider than superposed square fluid chamber, that is to say dashpot 71
Inside dimension is big compared with its opening size, so that increasing from the molten steel residence time that long nozzle 20 enters, field trash can fill
Divide and float, is conducive to molten steel uniformity.
Buffer platform 10 is set on the periphery of the flow straightener 7, buffer platform is filled by refractory material and formed, and flow straightener 7 is made
Edge smooth transition, can reduce the residual steel amount of molten steel shock zone, and extend the molten steel residence time further, dead zone body
Product reduces.The buffer platform 10 gradually narrows between the second part 52 of two water conservancy diversion barricades 5, and from depressed section 11 to two
Extend between a first part 51, buffer platform 10 forms the buffering slope 12 having a down dip between Liang Ge first part 51.This implementation
Example in the buffering slope extension elongation be 300mm, 37 ° of the gradient.
The first part 51 of two water conservancy diversion barricades 5 is parallel to each other and is vertically connected at second sidewall 2, Liang Ge first part it
Spacing 1000mm.The second part 52 of two water conservancy diversion barricades 5 extends from 51 outward bending of first part and is connected to depressed section
11 two sides edge, buffer platform two sides are close to two water conservancy diversion barricades 5 respectively and are arranged, so that above-mentioned buffer platform 10
Gradually narrowed effect is formed during extending to first part 51 between two second parts 52.
The above structure makes steel shock zone 6 have biggish volume, and molten steel speed reduces in the area, so as to
Enough reduce molten steel to wash away water conservancy diversion barricade 5 and side wall, improves the service life of water conservancy diversion barricade 5.
There are two deflector holes, respectively the first deflector hole 53 and the second deflector hole 54 for setting in first part 51, and two are led
Horizontal space 330mm between discharge orifice, height are respectively 225mm and 330mm.Wherein, the first deflector hole 53 is located at the second deflector hole
Between 54 and second sidewall 2, therefore, the first deflector hole 53 is farther apart from flow straightener 7.In order to make the molten steel of two water conservancy diversion bore regions
Flow velocity more evenly, improves velocity field, is arranged apart from farther away first deflector hole 53 of flow straightener 7 than the second deflector hole for being closer
54 height is lower, diameter is smaller.
The Inside To Outside of two deflector holes from first parts 51 extends obliquely upward, and the two angle that raises up is consistent, and is
30°.This structure keeps the speed of molten steel outflow deflector hole lower, so that molten steel is in molten iron shock zone 6 or even entire tundish
The interior residence time is longer, is conducive to inclusion floating, promotes molten steel uniformity.
Molten steel from water conservancy diversion outflow after, first reach pouring basket liquid level, rear portion stream stock larger model is formed in tundish
That encloses circulates, and so that the molten steel component and temperature that flow out from two mouths of a river 4 placed in the middle is reached unanimity, is conducive to field trash in molten steel
Floating remove, promote molten steel between capabilities exchange.Another part stream stock flows to the edge mouth of a river 4 along liquid level, avoids 4 top of water outlet
Molten steel is stagnated, and the dead space volume of corner areas can be effectively reduced.
Dam 8 is additionally provided between the mouth of a river 4 placed in the middle and the mouth of a river 4 of edge, between dam 8 and the mouth of a river 4 of edge between
Away from 600mm, height 240mm.8 bottom of dam is connect with packet bottom 3, and the both ends of dam 8 are separately connected the first side wall 1 and second sidewall
2.So that respectively stream response time difference reduces, each stream flowing consistency is obvious, and the residence time increases, and is conducive to molten steel uniformity, presss from both sides
Sundries has removal of sufficiently floating.
To reduce the dead zone ratio after dam 8 and reducing casting latter stage residual steel amount, it is provided with through hole 9 in dam 8, is somebody's turn to do
Through hole 9 is arranged by the first side wall 1.Extended to make the region respectively flow the response time, dead space volume is obviously optimized.
In favor of being conducive to inclusion removal, promote the raising of Cleanliness of Molten Steel.
As shown in figure 4, it can also be seen that, bulk velocity is improved significantly in tundish of the invention, and side from velocity field
Speed increases above the portion mouth of a river, to significantly improve the dead space volume in tundish.
Claims (9)
1. a kind of bloom four flows tundish, which is characterized in that including the first side wall (1), second sidewall (2) and be formed in
Long and narrow packet bottom (3) between the first side wall (1) and second sidewall (2)；The middle position of the first side wall (1) has outside
The depressed section (11) of recess；Packet bottom (3) is provided with four mouths of a river (4) successively arranged in its length direction, placed in the middle
Two mouths of a river (4) between setting there are two water conservancy diversion barricade (5), the bottom of two water conservancy diversion barricades (5) is all connected with the packet bottom
(3)；The water conservancy diversion barricade (5) has first part interconnected (51) and second part (52), two water conservancy diversion barricades (5)
First part (51) is parallel to each other and is vertically connected at the second sidewall (2), the second part of two water conservancy diversion barricades (5)
(52) extend from its first part (51) outward bending and be connected to the two sides edge of the depressed section (11)；Described
There are two deflector holes, the Inside To Outside of described two deflector holes from first part (51) to prolong obliquely for setting on a part of (51)
It stretches；Molten steel shock zone (6) are formed between two water conservancy diversion barricades (5), in the molten steel shock zone (6), depressed section
(11) flow straightener (7) for current stabilization and buffering molten steel is provided at.
2. bloom four according to claim 1 flows tundish, which is characterized in that be additionally provided with dam (8), the dam
(8) between the mouth of a river (4) placed in the middle and the mouth of a river (4) of edge, dam (8) bottom is connect with the packet bottom (3), dam (8)
Both ends be separately connected the first side wall (1) and the second sidewall (2).
3. bloom four according to claim 2 flows tundish, which is characterized in that be provided with perforation on the dam (8)
Hole (9), the through hole (9) are arranged by the first side wall (1).
4. bloom four according to claim 1 flows tundish, which is characterized in that the flow straightener (7) has recessed
The inside dimension of dashpot (71), the dashpot (71) is big compared with its opening size.
5. bloom four according to claim 1 flows tundish, which is characterized in that the outside of the flow straightener (7) is arranged
Have buffer platform (10), the buffer platform (10) is prolonged from the depressed section (11) between two first parts (51)
It stretches, and forms the buffering slope (12) having a down dip between Liang Ge first part (51).
6. bloom four according to claim 1 flows tundish, which is characterized in that two of the water conservancy diversion barricade (5) lead
Discharge orifice is respectively the first deflector hole (53) and the second deflector hole (54), and first deflector hole (53) is located at second deflector hole
(54) between second sidewall (2).
7. bloom four according to claim 6 flows tundish, which is characterized in that the diameter of first deflector hole (53)
Diameter compared with second deflector hole (54) is small.
8. bloom four according to claim 6 flows tundish, which is characterized in that the height of first deflector hole (53)
The height of second deflector hole (54) is low.
9. bloom four according to claim 1-8 flows tundish, which is characterized in that the deflector hole raises up
Angle is consistent, and is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910628652.2A CN110270679B (en) | 2019-07-12 | 2019-07-12 | Four-flow tundish for large square billets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910628652.2A CN110270679B (en) | 2019-07-12 | 2019-07-12 | Four-flow tundish for large square billets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110270679A true CN110270679A (en) | 2019-09-24 |
| CN110270679B CN110270679B (en) | 2024-06-14 |
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ID=67964347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910628652.2A Active CN110270679B (en) | 2019-07-12 | 2019-07-12 | Four-flow tundish for large square billets |
Country Status (1)
| Country | Link |
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| CN (1) | CN110270679B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517897A (en) * | 2020-11-19 | 2021-03-19 | 东北大学 | Split type tundish turbulence controller |
| WO2023185874A1 (en) * | 2022-03-28 | 2023-10-05 | 宝山钢铁股份有限公司 | Method and apparatus for reducing fine inclusions in molten steel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517897A (en) * | 2020-11-19 | 2021-03-19 | 东北大学 | Split type tundish turbulence controller |
| CN112517897B (en) * | 2020-11-19 | 2021-08-31 | 东北大学 | Split type tundish turbulence controller |
| WO2023185874A1 (en) * | 2022-03-28 | 2023-10-05 | 宝山钢铁股份有限公司 | Method and apparatus for reducing fine inclusions in molten steel |
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| Publication number | Publication date |
|---|---|
| CN110270679B (en) | 2024-06-14 |
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