CN110394436A - A kind of secondary cooling zone spray equipment of billet caster - Google Patents
A kind of secondary cooling zone spray equipment of billet caster Download PDFInfo
- Publication number
- CN110394436A CN110394436A CN201910686225.XA CN201910686225A CN110394436A CN 110394436 A CN110394436 A CN 110394436A CN 201910686225 A CN201910686225 A CN 201910686225A CN 110394436 A CN110394436 A CN 110394436A
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- area
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- 239000007921 spray Substances 0.000 title claims abstract description 66
- 238000001816 cooling Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000005266 casting Methods 0.000 claims abstract description 28
- 238000005507 spraying Methods 0.000 claims description 12
- 239000003643 water by type Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000005457 optimization Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 241000167854 Bourreria succulenta Species 0.000 abstract description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation 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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
- B22D11/1246—Nozzles; Spray heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of secondary cooling zone spray equipments of billet caster, by each spray section in secondary cooling zone, full (operating) water nozzle is set, and the arrangement and spray regime of each section nozzle are configured, improve the uniformity of cooling water, the appearance of effective control crackle, while also avoiding the appearance of off-square.Mild steel is produced using by the conticaster of the installation optimization, casting billet surface is effectively reduced chink and bleed-out phenomenon without obviously rise again (≤150 DEG C/m), prevents the excessively high generation underbead crack of slab straightening temperature, highest draws steel speed to reach 4.0m/min, and greatly reduces bleed-out number.Slab straightening temperature is lower than 1030 DEG C, and slab quality, outer dimension meet national standard, and low multiple quality meets centre burst, middle crack less than 2.0 grades, and central pipe is less than 2.0 grades.The device all uses (operating) water nozzle simultaneously, does not have to compressed air, significantly reduces Energy Consumption Cost.
Description
Technical field
The present invention relates to a kind of continuous casting installation for casting, and in particular to a kind of secondary cooling zone spray equipment of billet caster.
Background technique
Conticaster spray system is the important component of conticaster whole system, largely determines casting machine
Performance and slab quality are horizontal, and main function is to carry out spraying cooling to the band wick-containing slab of crystallizer out, so that slab is complete
Full solidification, and control slab temperature and uniformly decline along throwing direction.Billet caster is in high pulling rate working condition, with pulling rate
Increase, shell thickness constantly reduces, and the risk of bleed-out increases in continuous casting process, and it is uneven to be easy to appear slab cooling, slab
Surface is risen again phenomenon, while with continuous casting billet low power corner crack, underbead crack, off-square has seriously affected mill bar quality.
The excessive thermal stress that will cause of casting blank surface temperature fluctuation range is excessive in secondary cooling process, and this requires optimizations two
Cold water distribution makes casting billet surface rise again≤150 DEG C/m, and keeps the stability of secondary cooling system equipment.Secondary coolingwater, each section of distribution are not
When, nozzle location, spray angle, area coverage can all lead to green shell non-uniform temperature, influence two cold effects, and then influence slab
Temperature uniformity and cause implosion to generate.
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 secondary cooling zone of billet caster
Spray equipment, bleed-out number when which can be effectively reduced billet caster high pulling rate.
Technical solution: a kind of secondary cooling zone spray equipment of billet caster of the present invention, including from crystallizer
Sufficient roll segment spraying zone, a fan-shaped area, fan-shaped 2nd area and fan-shaped 3rd area successively to arrange downwards, the foot roll segment spraying zone, sector
One area, fan-shaped 2nd area and fan-shaped 3rd area are provided with the spray tube extended along throwing direction on respective four surfaces；It is described
Flat jet water, the laterally covering casting of the spray regime of the flat jet water are provided on each spray tube of sufficient roll segment spraying zone
The intermediate region on base surface；Multiple tapers are provided on each spray tube in a fan-shaped area, fan-shaped 2nd area and fan-shaped 3rd area
The spray regime of (operating) water nozzle, each taper (operating) water nozzle laterally covers entire casting billet surface；Wherein, each spray tube in a fan-shaped area
On taper (operating) water nozzle include the area's upper section nozzle, an area middle section nozzle and area's lower section nozzle arranged from top to bottom, each institute
It states and is intervally arranged between area's upper section nozzle with 0.8 ° of fan-shaped central angle, with 0.9 ° of fan between each area middle section nozzle
Shape central angle is intervally arranged, and is intervally arranged between each area lower section nozzle with 1.0 ° of fan-shaped central angle；Described fan-shaped two
Taper (operating) water nozzle on each spray tube in area includes the two area's upper section nozzles and two area's lower section nozzles arranged from top to bottom, each described
It is intervally arranged between two area's upper section nozzles with 1.7 ° of fan-shaped central angle, with 1.9 ° of sector between each 2nd areas lower section nozzle
Central angle is intervally arranged；With 2.2-2.8 ° of the fan-shaped center of circle between each taper (operating) water nozzle on each spray tube in fan-shaped 3rd area
Angular spacing arrangement, and interval angles from top to bottom are in increase tendency.
Wherein, the three flat water successively arranged from top to bottom are provided on each spray tube of the sufficient roll segment spraying zone
The Edge Distance slab corner of nozzle, the spray regime of each flat jet water is not less than 10mm.
Specifically, 120mm is spaced between two flat jet waters being located above, underlying two flat jet waters
Between be spaced 80mm, each flat jet water distance casting blank 70mm.
Wherein, it is provided with 13 taper (operating) water nozzles from top to bottom on each spray tube in a fan-shaped area, wherein from
Upper several mono- area's upper section nozzles of 1-5 Ge Wei downwards, mono- area middle section nozzle of 6-8 Ge Wei, mono- area's lower section nozzle of 9-12 Ge Wei.
It is intervally arranged between the 5-6 taper (operating) water nozzle with 0.9 ° of fan-shaped central angle, the 8-9 taper (operating) water nozzle
Between be intervally arranged with 1.0 ° of fan-shaped central angle.
Further, each taper (operating) water nozzle distance casting blank 110mm in a fan-shaped area.
Wherein, 11 taper (operating) water nozzles are provided with from top to bottom on each spray tube in fan-shaped 2nd area, wherein on to
Lower bis- area's upper section nozzle of several 2-7 Ge Wei, bis- area's lower section nozzle of 8-11 Ge Wei.
It is intervally arranged between the 7-8 taper (operating) water nozzle with 1.9 ° of fan-shaped central angle.
Further, each taper (operating) water nozzle distance casting blank 150mm in fan-shaped 2nd area.
Wherein, it is provided with 9 taper (operating) water nozzles, each taper (operating) water nozzle from top to bottom on each spray tube in fan-shaped 3rd area
Distance casting blank 150mm.
The utility model has the advantages that the secondary cooling zone spray equipment of the billet caster, passes through each spray in secondary cooling zone
Full (operating) water nozzle is arranged in section, and is configured to the arrangement and spray regime of each section nozzle, improves cooling water
Uniformity, the effective appearance for controlling crackle, while also avoiding the appearance of off-square.Using the conticaster by the installation optimization
Mild steel is produced, casting billet surface is effectively reduced chink and bleed-out phenomenon without obviously rise again (≤150 DEG C/m), prevents slab from rectifying
The excessively high generation underbead crack of straight temperature, highest draws steel speed to reach 4.0m/min, and greatly reduces bleed-out number.Slab aligning temperature
Degree is lower than 1030 DEG C, and slab quality, outer dimension meet national standard, and low multiple quality meets centre burst, middle crack is less than
2.0 grades, central pipe is less than 2.0 grades.The device all uses (operating) water nozzle simultaneously, does not have to compressed air, significantly reduces the energy
Consuming cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the secondary cooling zone spray equipment of billet caster of the present invention.
Specific embodiment
In the following, being described in further details in conjunction with attached drawing to the present invention.
In the present embodiment, the transformation of spray equipment is produced as mainly examining with the high efficiency, low cost of 150mm*150mm screw-thread steel
Consider object, and reduces the influence to the existing quality of production to the greatest extent.Pass through optimization small billet di-cold spray nozzle arrangement and nozzle type selecting, In
Billet caster slab cooling uniformity is improved under high pulling rate production status, reduction casting billet surface is risen again and straightening temperature, has
Effect reduces the generation of continuous casting billet low power corner crack, underbead crack bleed-out, is conducive to improve the casting under high pulling rate working condition
Base quality, steady production direct motion；Full (operating) water nozzle is used simultaneously, reduces compressed air consumption, hence it is evident that reduce cost.
As shown in Figure 1, a kind of secondary cooling zone spray equipment of billet caster, including successively arranged downwards from crystallizer 10
The sufficient roll segment spraying zone 1 of cloth, a fan-shaped area 2, fan-shaped two areas 3 and fan-shaped three areas 4.
Specifically, sufficient roll segment spraying zone 1, a fan-shaped area 2, fan-shaped two areas 3 and fan-shaped three areas 4 are equal on respective four surfaces
It is provided with the spray tube 5 extended along throwing direction.It is flat there are three being respectively provided on each spray tube 5 of sufficient roll segment spraying zone 1
(operating) water nozzle 6, four faces amount to 12 flat jet waters, and model 1/4PZ12485B used by flat jet water.Three flat
In jet water nozzle 6, it is spaced 120mm between two nozzles being located above, is spaced 80mm between underlying two nozzles, respectively
Flat jet water distance casting blank 70mm.The spray regime of flat jet water 6 laterally covers the intermediate region of casting billet surface, and each
The Edge Distance slab corner of the spray regime of flat jet water 6 is 10mm, effectively avoids the generation of corner crack.
Multiple taper (operating) water nozzles are provided on each spray tube 5 in a fan-shaped area 2, fan-shaped two areas 3 and fan-shaped three areas 4
7, the model PZ3.2-70QZ2 of use.
Specifically, it is provided with 13 taper (operating) water nozzles 7 from top to bottom on each spray tube 5 in a fan-shaped area 2, wherein
Several mono- area's upper section nozzles of 1-5 Ge Wei from the top down, mono- area middle section nozzle of 6-8 Ge Wei, mono- area's lower section nozzle of 9-12 Ge Wei.
It is intervally arranged between the 1-5 nozzle with 0.8 ° of fan-shaped central angle, between the 5-8 nozzle between 0.9 ° of fan-shaped central angle
It is intervally arranged between arrangement, the 8-12 nozzle with 1.0 ° of fan-shaped central angle.Referring to Fig. 1, sector alleged by the present invention is
Refer to that secondary cooling zone continuous casting radian is formed by sector.The 7 distance casting blank 110mm of each taper (operating) water nozzle in a fan-shaped area 2, so that respectively
The spray regime of taper (operating) water nozzle 7 laterally covers entire casting billet surface.
It is provided with 11 taper (operating) water nozzles 7 from top to bottom on each spray tube 5 in fan-shaped two areas 3, wherein the 2-7 nozzle
For two area's upper section nozzles, the 8-11 nozzle is two area's lower section nozzles.Between the 2-7 nozzle between 1.7 ° of fan-shaped central angle
Be intervally arranged between arrangement, the 7-11 nozzle with 1.9 ° of fan-shaped central angle, each taper (operating) water nozzle 7 in fan-shaped two areas 3 away from
From slab 150mm, so that the spray regime of each taper (operating) water nozzle 7 laterally covers entire casting billet surface.
The 9 taper (operating) water nozzles 7 arranged from top to bottom, each taper (operating) water nozzle are provided on each spray tube 5 in fan-shaped three areas 4
It is intervally arranged between 7 with 2.2-2.8 ° of fan-shaped central angle, and interval angles from top to bottom are in increase tendency.Each taper water spray
7 distance casting blank 150mm of mouth, so that the spray regime of each taper (operating) water nozzle 7 laterally covers entire casting billet surface.
By di-cold spray nozzle arrangement and water distribution optimization, produce mild steel, casting billet surface without obviously rise again (≤150 DEG C/m),
It is effectively reduced chink and bleed-out phenomenon, prevents the excessively high generation underbead crack of slab straightening temperature, highest draws steel speed to reach
4.0m/min。
Claims (10)
1. the secondary cooling zone spray equipment of a kind of billet caster, including the sufficient roll segment successively arranged downwards from crystallizer (10)
Spraying zone (1), a fan-shaped area (2), fan-shaped 2nd areas (3) and fan-shaped 3rd areas (4), which is characterized in that the foot roll segment spraying zone
(1), a fan-shaped area (2), fan-shaped 2nd areas (3) and fan-shaped 3rd areas (4) are provided on respective four surfaces along throwing direction
The spray tube (5) of extension；It is provided with flat jet water (6) on each spray tube (5) of the foot roll segment spraying zone (1), it is described
The spray regime of flat jet water (6) laterally covers the intermediate region of casting billet surface；A fan-shaped area (2), fan-shaped 2nd areas (3)
Multiple taper (operating) water nozzles (7), the injection model of each taper (operating) water nozzle (7) are provided with on each spray tube (5) of fan-shaped 3rd areas (4)
It encloses and laterally covers entire casting billet surface；
Wherein, the taper (operating) water nozzle (7) on each spray tube (5) of a fan-shaped area (2) includes the area to arrange from top to bottom
Upper section nozzle, an area middle section nozzle and area's lower section nozzle, with 0.8 ° of fan-shaped central angle between each area upper section nozzle
It is intervally arranged, is intervally arranged between each area middle section nozzle with 0.9 ° of fan-shaped central angle, each area lower section nozzle
Between be intervally arranged with 1.0 ° of fan-shaped central angle；
Taper (operating) water nozzle (7) on each spray tube (5) of fan-shaped 2nd area (3) includes the two area's upper sections spray arranged from top to bottom
Bis- area's lower section nozzle of Zui He is intervally arranged between each 2nd areas upper section nozzle with 1.7 ° of fan-shaped central angle, each 2nd area
It is intervally arranged between lower section nozzle with 1.9 ° of fan-shaped central angle；
With 2.2-2.8 ° of fan-shaped central angle between each taper (operating) water nozzle (7) on each spray tube (5) of fan-shaped 3rd area (4)
It is intervally arranged, and interval angles from top to bottom are in increase tendency.
2. the secondary cooling zone spray equipment of billet caster according to claim 1, which is characterized in that the foot roll segment
Three flat jet waters (6) successively arranged from top to bottom, each flat water are provided on each spray tube (5) of spraying zone (1)
The Edge Distance slab corner of the spray regime of nozzle (6) is not less than 10mm.
3. the secondary cooling zone spray equipment of billet caster according to claim 2, which is characterized in that be located above
It is spaced 120mm between two flat jet waters (6), is spaced 80mm between underlying two flat jet waters (6), it is each flat
(operating) water nozzle (6) distance casting blank 70mm.
4. the secondary cooling zone spray equipment of billet caster according to claim 1, which is characterized in that described fan-shaped one
13 taper (operating) water nozzles (7) are provided on each spray tube (5) in area (2) from top to bottom, wherein several 1-5 from the top down
For area's upper section nozzle, mono- area middle section nozzle of 6-8 Ge Wei, mono- area's lower section nozzle of 9-12 Ge Wei.
5. the secondary cooling zone spray equipment of billet caster according to claim 4, which is characterized in that the 5-6
It is intervally arranged between a taper (operating) water nozzle (7) with 0.9 ° of fan-shaped central angle, with 1.0 ° between the 8-9 taper (operating) water nozzle (7)
Fan-shaped central angle be intervally arranged.
6. the secondary cooling zone spray equipment of billet caster according to claim 5, which is characterized in that described fan-shaped one
Each taper (operating) water nozzle (7) distance casting blank 110mm in area (2).
7. the secondary cooling zone spray equipment of billet caster according to claim 1, which is characterized in that described fan-shaped two
11 taper (operating) water nozzles (7) are provided on each spray tube (5) in area (3) from top to bottom, wherein it is two that several 2-7 are a from the top down
Area's upper section nozzle, bis- area's lower section nozzle of 8-11 Ge Wei.
8. the secondary cooling zone spray equipment of billet caster according to claim 7, which is characterized in that the 7-8
It is intervally arranged between a taper (operating) water nozzle (7) with 1.9 ° of fan-shaped central angle.
9. the secondary cooling zone spray equipment of billet caster according to claim 8, which is characterized in that described fan-shaped two
Each taper (operating) water nozzle (7) distance casting blank 150mm in area (3).
10. the secondary cooling zone spray equipment of -9 described in any item billet casters according to claim 1, which is characterized in that
9 taper (operating) water nozzles (7), each taper (operating) water nozzle (7) are provided on each spray tube (5) of fan-shaped 3rd area (4) from top to bottom
Distance casting blank 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686225.XA CN110394436A (en) | 2019-07-26 | 2019-07-26 | A kind of secondary cooling zone spray equipment of billet caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910686225.XA CN110394436A (en) | 2019-07-26 | 2019-07-26 | A kind of secondary cooling zone spray equipment of billet caster |
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| Publication Number | Publication Date |
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| CN110394436A true CN110394436A (en) | 2019-11-01 |
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| CN201910686225.XA Pending CN110394436A (en) | 2019-07-26 | 2019-07-26 | A kind of secondary cooling zone spray equipment of billet caster |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814308A (en) * | 2019-11-11 | 2020-02-21 | 芜湖新兴铸管有限责任公司 | High-strength deformed steel bar continuous casting and production process |
| CN112517867A (en) * | 2020-11-27 | 2021-03-19 | 德龙钢铁有限公司 | Optimized arrangement method of flat nozzles for continuous casting |
| CN114769546A (en) * | 2022-06-17 | 2022-07-22 | 北京科技大学 | Method for improving cooling uniformity of casting blank |
| CN114871401A (en) * | 2022-05-25 | 2022-08-09 | 山东莱钢永锋钢铁有限公司 | Method for rapidly treating casting blank stripping |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814308A (en) * | 2019-11-11 | 2020-02-21 | 芜湖新兴铸管有限责任公司 | High-strength deformed steel bar continuous casting and production process |
| CN110814308B (en) * | 2019-11-11 | 2022-03-01 | 芜湖新兴铸管有限责任公司 | High-strength deformed steel bar continuous casting and production process |
| CN112517867A (en) * | 2020-11-27 | 2021-03-19 | 德龙钢铁有限公司 | Optimized arrangement method of flat nozzles for continuous casting |
| CN112517867B (en) * | 2020-11-27 | 2021-10-08 | 德龙钢铁有限公司 | Optimized arrangement method of flat nozzles for continuous casting |
| CN114871401A (en) * | 2022-05-25 | 2022-08-09 | 山东莱钢永锋钢铁有限公司 | Method for rapidly treating casting blank stripping |
| CN114769546A (en) * | 2022-06-17 | 2022-07-22 | 北京科技大学 | Method for improving cooling uniformity of casting blank |
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