CN108705055A - M+F-EMS control method in bloom continuous casting - Google Patents
M+F-EMS control method in bloom continuous casting Download PDFInfo
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- CN108705055A CN108705055A CN201810700009.1A CN201810700009A CN108705055A CN 108705055 A CN108705055 A CN 108705055A CN 201810700009 A CN201810700009 A CN 201810700009A CN 108705055 A CN108705055 A CN 108705055A
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- ems
- continuous casting
- gaussian intensity
- magnetic field
- bloom
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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
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- 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
- B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
Abstract
The present invention relates to the M+F-EMS control methods in a kind of bloom continuous casting, are particularly suitable for 360mm × 450mm section blooms, belong to bloom continuous casting production technical field.The present invention is on the basis of M-EMS, electromagnetic agitation equipment is additionally arranged between two cold-zones and solidification end, and the installation site of the two is rationally designed, it is arranged using the practical magnetic field gaussian intensity that stirs as with reference to be stirred electric current, improve the compactness and homogenieity of bloom steel continuous casting billet, it can be ensured that bloom steel continuous casting billet comprehensive quality high level controls.
Description
Technical field
The present invention relates to the M+F-EMS control method in a kind of bloom continuous casting, be particularly suitable for 360mm ×
450mm section blooms, belong to bloom continuous casting production technical field.
Background technology
With being constantly progressive for society, the life pursuit that people improve increasingly constantly pushes every profession and trade fast-developing.As
The performance requirement of one of basic material being most widely used, steel material has also constantly pushed new height to；Secondly as
The impetus of market economy itself, steel market environment with keen competition promote the steel products production of low cost, high quality
Technological development becomes inevitable.All the time, the good and bad of blank quality significantly determines product quality performance, also determines naturally
High efficiency, low cost, high-quality production feasibility.Technological difficulties focus primarily upon existing for the high quality of production of bloom continuous casting
Center segregation of casting blank, center porosity, central pipe control, this is because bloom cross dimensions is big, green shell is to center portion passage side
It differs greatly to solidification rate, solidification duration, the control of casting blank section solute element homogenieity is difficult；In addition, continuous casting
Center portion setting time is long in the process, and liquid core length increases, and the feeding of solidification latter stage is difficult, and center segregation of casting blank control is difficult.
Casting process Inner Quality of Billet control problem is the key that limit product capability and performance, and matter inside all kinds of strands
It measures in defect, gross segregation is the key problem that " homogenieity " control is always continuous casting research.Not with continuous casting equipment technology
Disconnected research, electromagnetic agitating technology are used widely, and effective improvement result is played to the control of continuous casting billet homogenieity.Continuous casting electricity
Magnetic stirring mainly drives solidification front molten steel forced disturbance, optimized temperature field and flow field by rotating excitation field, improves solidification and develops
Dynamic conditions promotes solidified shell uniformly to develop, and promotes the molten steel of solidification front solute to mix fortune again, and then effectively carry
Rise steel homogeneity.But continuous-casting electromagnetic agitating technology also faces some technical problems, the reasonable selection of one side stirring intensity,
Because under the conditions of strong mixing, the solute element that solidification front can be caused to be precipitated that excessively washes away of solidification front washes away excessively and shape
At the white band of negative segregation；Opposite weak stirring is on the weak side, can not effectively drive molten steel, homogenieity improvement is not notable, especially
The mushy zone for solidifying the later stage is become apparent.On the other hand, still about the analysis of Stirring During Continuous Casting white band formation mechenism
Without final conclusion, mainly there is solute to wash away, solidification rate mutation, liquidus temperature change several hypothesis, each hypothesis is respectively to white band
The Partial Feature of formation carries out specific aim parsing.
Currently, difference of the Stirring During Continuous Casting according to specific installation site, is broadly divided into M-EMS, two cold electricity
Magnetic stirs and solidification end electromagnetic agitation, wherein M-EMS are most widely used, and each factory also has using crystallizer+two
The various combination electromagnetic agitation of cold (or solidification end).And for installing electromagnetic agitation equipment between two cold-zones and solidification end
Control technology also find no.
Invention content
The technical problem to be solved by the present invention is to：A kind of M+F-EMS controlling party in bloom continuous casting is provided
Method can promote bloom steel continuous casting billet compactness, homogenieity, it is ensured that bloom steel continuous casting billet comprehensive quality high level controls.
The technical solution adopted in the present invention is to solve above-mentioned technical problem：In bloom continuous casting " crystallizer+between
The M+F-EMS control method of two cold and solidification ends ".
(1) " M-EMS "：The low level in crystallizer exit is installed, and M-EMS equips cover height
For 350mm, lower end is flushed with mouth under crystallizer；In addition, M-EMS true field gaussian intensity is measured, according to steel grade
The control range for determining practical stirring magnetic field gaussian intensity is stirred electric current setting with the practical magnetic field gaussian intensity that stirs, stirs
Mix power frequency 2.4Hz.
(2) " between two cold and solidification end electromagnetic agitations "：Electromagnetic agitation is installed between two cold-zones and solidification end
Equipment, electromagnetic agitation equipment installation site is to solidify the region that linear ratio is 0.45~0.47, specific to be mounted on distance crystallization
The device molten steel face sections 10.0m~11.0m；In addition, actual measurement stirring magnetic field gaussian intensity, determines that practical stirring magnetic field is high according to steel grade
The control range of this intensity is stirred electric current setting with the practical magnetic field gaussian intensity that stirs, and stir current frequency is 7.0Hz.
It should be noted that steel grade is different accordingly using the control parameter of the M+F-EMS mode in the present invention
It is correspondingly also different, M-EMS magnetic field 225~345Gs of gaussian intensity is generally pressed, corresponding current intensity is 400A
~600A, power frequency 2.4Hz；It is corresponding between two cold electromagnetic agitation magnetic field 1175~475Gs of gaussian intensity with solidification end
Current strength is 185A~320A, power frequency 7.0Hz.By taking the bloom pinion steel of 360mm × 450mm sections as an example, crystallization
The control parameter of device electromagnetic agitation is preferably, and is that 280 ± 15Gs is stirred electric current setting with the practical magnetic field gaussian intensity that stirs,
Stir current frequency 2.4Hz；Electromagnetic agitation control parameter between two cold-zones and solidification end is preferably, by true field height
This intensity is that 200 ± 25Gs is stirred current strength setting, and stir current frequency is 7.0Hz.
In addition, when the present invention is implemented, mating general casting parameters system need to be executed：
(1) by taking the bloom pinion steel of above-mentioned 360mm × 450mm sections as an example, the technique of the cooling water of crystallizer is joined
Numerical control is made as water flow 3100L/min~3350L/min, hydraulic pressure 0.75MPa~0.90MPa；
(2) Water Rate for Secondary Cooling Water presses 0.301Lkg-1 Steel~0.343Lkg-1 SteelIt is configured；
(3) for the 1st heat of middle packet casting, cast superheat of liquid steel control is at 25 DEG C~45 DEG C；It casts for middle packet
2~N heats, cast superheat of liquid steel control at 15 DEG C~45 DEG C；
(4) casting speed control can according to target pulling rate 0.50m/min constant speed be poured into a mould in 0.45m/min~0.55m/min.
(5) tube type mold is cast, and shell thickness size is preferably controlled in 16mm~20mm.The cooling water of tube type mold
Road is two into two times, and there are two water inlet and two water outlets for tool, and water inlet is installed on using DN250 regulating valves, fine to adjust
Save crystallizer cooling water；The corner fillet size of tube type mold is R20mm, can optimize the cooling of strand corner in this way, improve casting
Base corner defect controls.It is comprehensive to ensure crystallizer section heat transfer uniformity, ensure that crystallizer exit casting blank shell thickness is uniform, it is real
It can better ensure that crystallizer exit casting blank shell thickness is uniform when applying.
The beneficial effects of the invention are as follows：Conventional M+F-EMS combination is broken through, in M-EMS
On the basis of, combination is equipped between the electromagnetic agitation of two cold-zones and solidification end, is rationally designed to the installation site of the two, into
One step is arranged as basic parameter to be stirred electric current using the practical magnetic field gaussian intensity that stirs, and improves bloom steel continuous casting billet
Compactness and homogenieity, it can be ensured that bloom steel continuous casting billet comprehensive quality high level control.
Specific implementation mode
With reference to embodiment, the invention will be further described.
In embodiment, the electromagnetic agitation equipment installed between two cold-zones and solidification end, referred to as " between two cold and solidifications
End electromagnetic agitation " (S~F-EMS).
Embodiment 1
The embodiment is certain steel mill method production 360mm × 450mm section 20CrMnTiH series teeth using the present invention
Take turns steel continuous casting blooms.The present invention key technology specific implementation mode be：(1) M-EMS is crystallizer exit
Low level installation, M-EMS equip cover height 350mm, lower end is flushed with mouth under crystallizer；Magnetic is stirred with practical
Field gaussian intensity is 280 ± 15Gs, and the stir current intensity that actually puts into operation is 500A ± 10A, stir current frequency 2.4Hz.(2) root
It is that 0.45~0.47 progress " between two cold and solidification end electromagnetic agitations " (S~F-EMS) is specifically pacified according to solidified shell linear ratio
The determination of holding position, specially apart from the sections crystallizer molten steel surface 10.0m~11.0m；In addition, being by true field gaussian intensity
200 ± 25Gs is stirred current strength setting, and practical stir current intensity is 200A ± 15A, and stir current frequency is
7.0Hz。
In addition to using above-mentioned equipment technology, other mating Series Universal casting parameters systems specifically execute the present invention
For：(1) it is R20mm to use tube type mold, corner fillet size, and the cooling of optimization strand corner improves strand corner defect control
System；(2) design tube type mold water route is two into two times, ensures heat transfer uniformity；(3) appropriate intensity of cooling is equipped with to crystallizer
(water flow 3150L/min~3350L/min, hydraulic pressure 0.80MPa~0.90MPa), crystallization is fine-tuned using DN250 regulating valves
Device cooling water ensures that crystallizer exit casting blank shell thickness is uniform, and shell thickness size Control is in 16mm~20mm；(6) two
Cold water ratio presses 0.301Lkg-1 Steel~0.323Lkg-1 SteelIt is configured.It will cast superheat of liquid steel (middle packet casting) control
At 15 DEG C~35 DEG C, particularly, for the first heat of middle packet, it is desirable that the degree of superheat is controlled at 25 DEG C~45 DEG C；Casting speed control is existed
0.45m/min~0.55m/min, it is 93.12% that target pull rate 0.50m/min constant speed, which pours into a mould ratio,.
Casting process Mold liquid level stabilizing, covering slag thickness distribution are uniform.Low power is carried out to continuous casting blooms
Detection；Corroded using cold sour dendrite, detection strand cross section shell thickness distribution situation, the results show that the technological invention is given birth to
The 20CrMnTiH Series Gears steel continuous casting blooms shell thickness of production is circumferentially distributed uniformly along section, whole control 16mm~
20mm；Strand corner quality is good, carries out in-situ metal Scanning Detction to continuous casting billet tunneling boring, strand tunneling boring homogeneity is
0.901~0.922, center portion consistency is 0.913~0.941, and corresponding bite low power grading center segregation, center porosity are equal
≤ 0.5 grade, non-stop layer shrinkage cavity.
Embodiment 2
The embodiment is the 34CrMo4 oxygen cylinders of certain steel mill method production 360mm × 450mm sections using the present invention
Steel bloom.
The present invention specific implementation mode be：(1) M-EMS is that the low level in crystallizer exit is installed, crystallization
Device electromagnetic agitation equips cover height 350mm, and lower end is flushed with mouth under crystallizer；With the practical magnetic field gaussian intensity that stirs for 240
± 15Gs, the stir current intensity that actually puts into operation are 400A~450A, stir current frequency 2.4Hz.(2) linear according to solidified shell
Than the determination for carrying out the specific installation site " between two cold and solidification end electromagnetic agitations " (S~F-EMS) for 0.45~0.47, tool
Body is apart from the sections crystallizer molten steel surface 10.0m~11.0m；In addition, being that 250 ± 25Gs is stirred by true field gaussian intensity
Current strength setting is mixed, practical stir current intensity is 270A~320A, and stir current frequency is 7.0Hz.
In addition to using above-mentioned equipment technology, other mating serial casting parameters systems specifically execute is the present invention：
(1) it is R20mm to use tube type mold, corner fillet size, and the cooling of optimization strand corner improves the control of strand corner defect；
(2) design tube type mold water route is two into two times, ensures heat transfer uniformity；(3) appropriate intensity of cooling (water is equipped with to crystallizer
Flow 3100L/min~3250L/min, hydraulic pressure 0.75MPa~0.85MPa), crystallizer is fine-tuned using DN250 regulating valves
Cooling water ensures that crystallizer exit casting blank shell thickness is uniform, and shell thickness size Control is in 16~20mm；(6) two cold ratios
Water presses 0.311Lkg-1 Steel~0.333Lkg-1 SteelIt is configured.Cast superheat of liquid steel (middle packet casting) is controlled 20
DEG C~45 DEG C, particularly, for the first heat of middle packet, it is desirable that the degree of superheat is controlled at 35 DEG C~45 DEG C；Casting speed control is existed
0.45m/min~0.55m/min, it is 92.6% that target pull rate 0.50m/min constant speed, which pours into a mould ratio,.
Casting process Mold liquid level stabilizing, covering slag thickness distribution are uniform.Low power is carried out to continuous casting blooms
Detection；Corroded using cold sour dendrite, detection strand cross section shell thickness distribution situation, the results show that the technology was produced
34CrMo4 oxygen cylinders steel continuous casting blooms shell thickness is circumferentially distributed uniformly along section, and whole control is in 17mm~20mm；Strand
Corner quality is good, to continuous casting billet tunneling boring carry out in-situ metal Scanning Detction, strand tunneling boring homogeneity be 0.921~
0.930, center portion consistency is 0.910~0.937, and corresponding bite low power grading center segregation, center porosity are ≤0.5
Grade, non-stop layer shrinkage cavity.
Embodiment 3
The embodiment is that certain steel mill method production 360mm × 450mm section 42CrMoH steel continuous castings using the present invention are big
Square billet.The present invention specific implementation mode be：(1) M-EMS is that the low level in crystallizer exit is installed, crystallizer
Electromagnetic agitation equips cover height 350mm, and lower end is flushed with mouth under crystallizer；With it is practical stir magnetic field gaussian intensity be 330 ±
15Gs, the stir current intensity that actually puts into operation are 550A~600A, stir current frequency 2.4Hz.(2) according to solidified shell linear ratio
The determination for carrying out (S~F-EMS) specific installation site " between two cold and solidification end electromagnetic agitations " for 0.45~0.47, specifically
For apart from the sections crystallizer molten steel surface 10.0m~11.0m；In addition, being that 450 ± 25Gs is stirred by true field gaussian intensity
Current strength is arranged, and practical stir current intensity is 300A~320A, and stir current frequency is 7.0Hz.
In addition to using above-mentioned equipment technology, other mating serial casting parameters systems specifically execute is the present invention：
(1) it is R20mm to use tube type mold, corner fillet size, and the cooling of optimization strand corner improves the control of strand corner defect；
(2) design tube type mold water route is two into two times, ensures heat transfer uniformity；(3) appropriate intensity of cooling (water is equipped with to crystallizer
Flow 3150L/min~3350L/min, hydraulic pressure 0.80MPa~0.90MPa), crystallizer is fine-tuned using DN250 regulating valves
Cooling water ensures that crystallizer exit casting blank shell thickness is uniform, and shell thickness size Control is in 16mm~20mm；(6) two is cold
Specific water presses 0.321Lkg-1 Steel~0.343Lkg-1 SteelIt is configured.Cast superheat of liquid steel (middle packet casting) control is existed
20 DEG C~40 DEG C, particularly, for the first heat of middle packet, it is desirable that the degree of superheat is controlled at 30 DEG C~45 DEG C；Casting speed control is existed
The ratio of 0.45m/min~0.55m/min, the cast of target pull rate 0.50m/min constant speed are 94.4%.
Casting process Mold liquid level stabilizing, covering slag thickness distribution are uniform.Low power is carried out to continuous casting blooms
Detection；Corroded using cold sour dendrite, detection strand cross section shell thickness distribution situation, the results show that the technology was produced
42CrMoH steel continuous casting blooms shell thicknesses are circumferentially distributed uniformly along section, and whole control is in 16mm~20mm；Strand corner
Quality is good, carries out in-situ metal Scanning Detction to continuous casting billet tunneling boring, strand tunneling boring homogeneity is 0.922~0.947, the heart
Portion's consistency is 0.903~0.941, corresponding bite low power grading center segregation, center porosity≤0.5 grade, non-stop layer
Shrinkage cavity.
Above-described embodiment illustrates, after technical scheme of the present invention, 360mm × 450mm section bloom strands
Quality control is good, and shell thickness is uniformly distributed circumferentially, and strand tunneling boring homogenieity is preferable, other capability and performances all close
Lattice, internal rarefaction and shrinkage cavity are effectively controlled, and the high-caliber control of strand center portion consistency, center porosity, center segregation are low
Times quality classification norm controlling is more excellent.
Claims (3)
1. the M+F-EMS control method in bloom continuous casting, it is characterised in that：Using tube type mold；
M-EMS is that the low level in crystallizer exit is installed, and it is 350mm that M-EMS, which equips cover height,
Lower end is flushed with mouth under crystallizer；M-EMS true field gaussian intensity is measured, practical stirring is determined according to steel grade
The control range of magnetic field gaussian intensity is stirred electric current setting, stir current frequency with the practical magnetic field gaussian intensity that stirs
2.4Hz；
Electromagnetic agitation equipment is installed between two cold-zones and solidification end, it is that solidification is linear which, which equips installation site,
Than the region for 0.45~0.47；Actual measurement stirring magnetic field gaussian intensity determines practical stirring magnetic field gaussian intensity according to steel grade
Control range is stirred electric current setting with the practical magnetic field gaussian intensity that stirs, and stir current frequency is 7.0Hz.
2. the M+F-EMS control method in bloom continuous casting as described in claim 1, it is characterised in that：Bloom
For the pinion steel of 360mm × 450mm sections；The control parameter of M-EMS is to stir magnetic field gaussian intensity with practical
It is stirred electric current setting, stir current frequency 2.4Hz for 280 ± 15Gs；Electromagnetism between two cold-zones and solidification end stirs
Mixing control parameter is, is that 200 ± 25Gs is stirred current strength setting by true field gaussian intensity, stir current frequency is
7.0Hz。
3. the M+F-EMS control method in bloom continuous casting as claimed in claim 1 or 2, it is characterised in that：
Electromagnetic agitation equipment installation site between two cold-zones and solidification end is apart from the sections crystallizer molten steel surface 10.0m~11.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700009.1A CN108705055A (en) | 2018-06-29 | 2018-06-29 | M+F-EMS control method in bloom continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700009.1A CN108705055A (en) | 2018-06-29 | 2018-06-29 | M+F-EMS control method in bloom continuous casting |
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| Publication Number | Publication Date |
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| CN108705055A true CN108705055A (en) | 2018-10-26 |
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| CN201810700009.1A Withdrawn CN108705055A (en) | 2018-06-29 | 2018-06-29 | M+F-EMS control method in bloom continuous casting |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215309A (en) * | 2015-11-11 | 2016-01-06 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method that big cross section Properties of Heavy Rail Steel center segregation of casting blank controls |
| CN105803150A (en) * | 2016-03-23 | 2016-07-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling blank casting quality of phi-280mm Cr-Mo series circular tube blank |
| CN105803152A (en) * | 2016-03-23 | 2016-07-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Center porosity control method for 30CrMo round blooms and steel casting blooms |
| CN106475542A (en) * | 2016-11-16 | 2017-03-08 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of axle steel and its continuous cast method |
| CN107790666A (en) * | 2017-10-27 | 2018-03-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Large section Properties of Heavy Rail Steel continuous casting control method |
-
2018
- 2018-06-29 CN CN201810700009.1A patent/CN108705055A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215309A (en) * | 2015-11-11 | 2016-01-06 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method that big cross section Properties of Heavy Rail Steel center segregation of casting blank controls |
| CN105803150A (en) * | 2016-03-23 | 2016-07-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for controlling blank casting quality of phi-280mm Cr-Mo series circular tube blank |
| CN105803152A (en) * | 2016-03-23 | 2016-07-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Center porosity control method for 30CrMo round blooms and steel casting blooms |
| CN106475542A (en) * | 2016-11-16 | 2017-03-08 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of axle steel and its continuous cast method |
| CN107790666A (en) * | 2017-10-27 | 2018-03-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Large section Properties of Heavy Rail Steel continuous casting control method |
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