CN106041009B - The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold - Google Patents
The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold Download PDFInfo
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- CN106041009B CN106041009B CN201610580291.5A CN201610580291A CN106041009B CN 106041009 B CN106041009 B CN 106041009B CN 201610580291 A CN201610580291 A CN 201610580291A CN 106041009 B CN106041009 B CN 106041009B
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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
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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
- B22D11/16—Controlling or regulating processes or operations
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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
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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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
- B22D11/186—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using electric, magnetic, sonic or ultrasonic means
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Abstract
The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold, including horizontal magnetic pole, magnet exciting coil, vertical magnetic pole and yoke；Vertical magnetic pole is provided with two pairs, and horizontal magnetic pole is provided with a pair or two pairs；When horizontal magnetic pole is a pair of, it is located at below invasive nozzle and arranged along the wide face of crystallizer；When horizontal magnetic pole is two pairs, the horizontal magnetic pole in upper and lower part is designated as respectively, lower horizontal magnetic pole is located at below invasive nozzle and arranged along the wide face of crystallizer, upper level magnetic pole is located at Mold near surface and arranged along the wide face of crystallizer；Two vertical magnetic poles are respectively arranged in crystallizer two sides areas adjacent and intersected with a pair or two pairs of horizontal magnetic poles；Magnet exciting coil and yoke are equipped with horizontal magnetic pole, electric current is applied by magnet exciting coil, steady magnetic field is produced between horizontal magnetic pole and vertical magnetic pole, the molten steel of flowing during steady magnetic field by, by the electromagnetic force in opposite direction with molten steel flow, the flowing of Mold being controlled by electromagnetic force in crystallizer.
Description
Technical field
The invention belongs to continuous casting technology field, more particularly to a kind of vertical electricity for controlling molten steel flow in continuous cast mold
Magnetic detents.
Background technology
In continuous casting production process, molten steel is entered in crystallizer by submersed nozzle with certain flow angle, from
The molten steel of submersed nozzle outflow can impact crystallizer lateral side regions with certain flow velocity, so formed backflow and under backflow.
On the molten steel surface that can impact in crystallizer of the molten steel that backflows, in turn result in liquid fluctuating, can particularly aggravate knot
Liquid fluctuating near the meniscus of brilliant device side, easily causes slag phenomenon.
Under the molten steel penetration depth backflowed it is larger, the out-phase material such as the field trash in molten steel, bubble can be brought into crystallization
The deeper position of device, and out-phase material is difficult floating, and may be captured by molten steel initial solidification shell forward position, so as to cause continuous casting
Base surface or surface defect.
In addition, the molten steel flowed out from submersed nozzle produces impact to initial solidification green shell in crystallizer, also result in just
Beginning solidified shell is thinned or uneven, easily causes bleed-out accident.
In order to solve the above problems, technical staff would generally install electromagnetic brake additional in the wide face horizontal direction of crystallizer, lead to
Crossing electromagnetic brake makes the molten steel that flowing in steady magnetic field, crystallizer is formed in crystallizer when by steady magnetic field, will be by
The electromagnetic force in opposite direction with molten steel flow, so as to realize the flowing purpose of control Mold.
Being presently used for producing the electromagnetic brake of steady magnetic field mainly includes regional electro-magnetic braking device, one section of full width
Two sections of electro-magnetic braking devices of electro-magnetic braking device and full width.
On regional electro-magnetic braking device, it can act the stable state magnetic for going out to flow region in mold gap side opening
, and then play a part of control submersed nozzle outflow molten steel flow, still, the zone of action of the steady magnetic field produced by it
It is limited, it is impossible to effective control is carried out to the molten steel flow in whole crystallizer, and easily produce the other defects such as raceway groove.
On one section of electro-magnetic braking device of full width (such as Application No. 98810685.X Chinese patent application), it passes through
A pair of horizontal magnetic poles for being arranged in below submersed nozzle and covering the whole wide face of crystallizer produce steady magnetic field, and then play control
Backflow the impact depth of molten steel under the whole wide face of crystallizer processed, still, and it is to backflowing molten steel to molten steel surface in crystallizer
Fluctuation and slag lack effective control.
On two sections of electro-magnetic braking devices of full width (such as the Chinese patent application of Application No. 98801009.7), it passes through
It is arranged in a pair of horizontal magnetic poles of crystallizer molten steel surface region and a pair of horizontal magnetic poles below submersed nozzle is produced
Steady magnetic field, and then play a part of control crystallizer molten steel surface wave and molten steel impact depth, still, in order that crystallizer
Molten steel surface wave at the meniscus of side is effectively controlled, and a pair of horizontal magnetic poles of crystallizer molten steel surface region are often needed
Apply sufficiently large magnetic field intensity, the molten steel surface velocity that this easily causes the most of region of crystallizer on the contrary is too low, so that
The heat exchange of molten steel and covering slag is significantly reduced, is unfavorable for the fusing of covering slag and the absorption of field trash.
In addition, for two sections of electro-magnetic braking devices of one section of electro-magnetic braking device of full width and full width, the horizontal magnetic pole of the two exists
The position of short transverse is unadjustable, in continuous casting production process, when mouth of a river immersion depth, the mouth of a river go out flow angle, liquid level height
When the technological parameter such as degree and pulling rate changes, a variety of changes, nothing can also occur for the matching relationship of horizontal magnetic pole and technological parameter
Method remains rational, optimal matching relationship, and this can badly influence the metallurgical effect of electromagnetic braking, or even suppresses to be mingled with
The floating of the out-phase material such as thing, bubble.
The Chinese patent of Patent No. 200810011104.7 also discloses that a kind of electro-magnetic braking device, and it is in crystallizer two
It is disposed near side and along in crystallizer short transverse the steel near two vertical magnetic poles, vertical magnetic pole covering crystallizer side
Liquid surface region and the mouth of a river go out to flow shock zone and produce steady magnetic field, the steady magnetic field produced by two vertical magnetic poles, control
Molten steel surface wave and the mouth of a river near crystallizer meniscus processed go out to flow the flowing in shock point region, and the electro-magnetic braking device is to knot
The braking effect of brilliant device side near zone is changed by casting parameters is influenceed smaller.But, the electro-magnetic braking device is
It is made up of two and half magnetic poles and magnet exciting coil for being surrounded on crystallizer side, width of the vertical magnetic pole in the wide face direction of crystallizer has
Limit, when crystallizer breadth is larger, the steady magnetic field intensity in heart district domain is weaker in a crystallizer, it is impossible to effectively in control crystallizer
Backflow the impact depth of molten steel under heart district domain, therefore is unfavorable for the floating of the out-phase material such as field trash, bubble.
The content of the invention
The problem of existing for prior art, the present invention provides steel in a kind of control continuous cast mold of brand-new Curve guide impeller
The vertical electro-magnetic braking device of liquid flowing, goes out to flow at impact and meniscus of the molten steel to crystallizer side preferentially suppressing the mouth of a river
While molten steel surface flow, the molten steel flow of crystallizer central area can be controlled, it is to avoid the molten steel of crystallizer central area
The too low too deep situation of molten steel impact depth of being backflowed with of surface velocity occurs, and to suppress fluctuation and the slag on molten steel surface, promotees
Enter the floating of the out-phase material such as Slag inclusion, bubble, make the metallurgical effect of its electromagnetic braking is influenceed smaller by changes in process parameters.
To achieve these goals, the present invention is adopted the following technical scheme that：Molten steel flow in one kind control continuous cast mold
Vertical electro-magnetic braking device, including horizontal magnetic pole, magnet exciting coil, vertical magnetic pole and yoke；The horizontal magnetic pole is provided with a pair,
Vertical magnetic pole is provided with two pairs；Horizontal magnetic pole described in a pair is located at below invasive nozzle and arranged along the wide face of crystallizer, two pairs of institutes
State vertical magnetic pole to be respectively arranged in crystallizer two sides areas adjacent, two vertical magnetic poles intersect with a pair of horizontal magnetic poles；Institute
State magnet exciting coil and yoke to be mutually equipped with horizontal magnetic pole, electric current is applied by magnet exciting coil, in horizontal magnetic pole and vertical magnetic pole
Between produce steady magnetic field, in crystallizer the molten steel of flowing by during steady magnetic field by the electromagnetism in opposite direction with molten steel flow
Power, the flowing of Mold is controlled by electromagnetic force.
The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold, including horizontal magnetic pole, magnet exciting coil,
Vertical magnetic pole and yoke；The horizontal magnetic pole and vertical magnetic pole are equipped with two pairs；Horizontal magnetic pole described in a pair is located at intrusive mood water
Arranged below mouthful and along the wide face of crystallizer, and be designated as lower horizontal magnetic pole；Horizontal magnetic pole described in another pair is located at steel in crystallizer
Liquid near surface and arranged along the wide face of crystallizer, and be designated as upper level magnetic pole；Two pairs of vertical magnetic poles are respectively arranged in knot
Brilliant device two sides areas adjacent, two vertical magnetic poles intersect with two pairs of horizontal magnetic poles；The magnet exciting coil and yoke are and water
Flat magnetic pole is mutually equipped with, and applies electric current by magnet exciting coil, steady magnetic field, crystallizer are produced between horizontal magnetic pole and vertical magnetic pole
The molten steel of interior flowing during steady magnetic field by, by the electromagnetic force in opposite direction with molten steel flow, crystallizer being controlled by electromagnetic force
The flowing of interior molten steel.
Two pairs of vertical magnetic poles are in the connected mode of intersection with a pair of horizontal magnetic poles：
1. vertical magnetic pole is vertically embedded on horizontal magnetic pole；
2. vertical magnetic pole is connected the upper and lower surface of horizontal magnetic pole is vertical with horizontal magnetic pole respectively；
3. vertical magnetic pole is only connected the upper surface of horizontal magnetic pole is vertical with horizontal magnetic pole；
4. vertical magnetic pole is only connected the lower surface of horizontal magnetic pole is vertical with horizontal magnetic pole.
Two pairs of vertical magnetic poles are in the connected mode of intersection with two pairs of horizontal magnetic poles：
1. vertical magnetic pole, which is respectively perpendicular, is embedded on upper level magnetic pole and lower horizontal magnetic pole；
2. vertical magnetic pole is only vertically embedded on lower horizontal magnetic pole；
3. vertical magnetic pole is only vertically embedded on upper level magnetic pole；
4. vertical magnetic pole is vertically embedded on upper level magnetic pole, and vertical magnetic pole lower horizontal magnetic pole lower surface with
Horizontal magnetic pole is vertically connected；
5. vertical magnetic pole is connected the upper and lower surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole respectively；
6. vertical magnetic pole is only connected the upper surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole；
7. vertical magnetic pole upper level magnetic pole lower surface it is vertical with horizontal magnetic pole be connected, and vertical magnetic pole is in bottom water
The lower surface of flat magnetic pole is vertical with horizontal magnetic pole to be connected；
8. vertical magnetic pole is only connected the lower surface of upper level magnetic pole is vertical with horizontal magnetic pole.
The requirement for height of the vertical magnetic pole is covering is from Mold surface 100mm and extends downwardly
1000mm region.
The width range of the vertical magnetic pole is 50mm~400mm.
The magnetic induction intensity of steady magnetic field is 0.01T~3T between the horizontal magnetic pole and vertical magnetic pole.
According to the regulation change of crystallizer width and being actually needed for control molten steel flow, in crystallizer width
On, the binding site of the vertical magnetic pole and horizontal magnetic pole freely select.
Beneficial effects of the present invention：
The vertical magnetic pole of the present invention is without setting magnet exciting coil, and it can mutually be tied with different connected modes with horizontal magnetic pole
Close, steady magnetic field is produced between horizontal magnetic pole and vertical magnetic pole merely with the magnet exciting coil on horizontal magnetic pole.
The present invention produces steady by the way of two vertical magnetic poles and a pair of horizontal magnetic poles or two pairs of horizontal magnetic poles intersect
State magnetic field, along crystallizer short transverse, molten steel surface near crystallizer two sides and just can be covered by two vertical magnetic poles
Beginning solidified shell front porch area, can control crystallizer side nearby to go out to flow shock zone and level from molten steel surface to the mouth of a river
Molten steel flow region below magnetic pole, makes the mouth of a river go out to flow molten steel and is just suppressed before impact crystallizer side by magnetic field, subtract
The disturbance of its weak impact and molten steel surface to crystallizer side, with the molten steel for controlling crystallizer side meniscus surface area fluctuate with
Slag, capture of the reduction initial solidification green shell to field trash and bubble, and then improve the quality of continuous casting billet.
The requirement for height of the vertical magnetic pole of the present invention is covering is from Mold surface 100mm and extends downwardly
1000mm region, that is, meet covering from the depthkeeping below the molten steel surface to submersed nozzle near crystallizer side
Region is spent, in continuous casting production process, even if mouth of a river immersion depth, the mouth of a river go out the techniques such as flow angle, liquid level and pulling rate ginseng
Number is when changing, the molten steel flow near crystallizer side all the time in the region that vertical magnetic pole is covered, therefore, it is possible to according to
The molten steel surface wave and molten steel impact depth near crystallizer side are so efficiently controlled, makes its braking effect by technological parameter
The influence of change is smaller.
When producing steady magnetic field by the way of the present invention is intersected using two vertical magnetic poles and a pair of horizontal magnetic poles, pass through
The horizontal magnetic pole of crystallizer wide face arrangement controls the molten steel of crystallizer central area to flow downward, and the impact for reducing molten steel is deep
Degree, realizes the purpose for promoting field trash and bubble floating.
It is vertical when producing steady magnetic field by the way of the present invention is intersected using two vertical magnetic poles and two pairs of horizontal magnetic poles
Magnetic pole can be used cooperatively with a pair of horizontal magnetic poles positioned at crystallizer molten steel near surface, have selected a kind of vertical magnetic pole with
After the connected mode of horizontal magnetic pole, the stream at the meniscus of crystallizer side can be controlled by increasing the magnetic field intensity of vertical magnetic pole
It is dynamic, prevent the fluctuation on molten steel surface and slag at meniscus；Meanwhile, relatively weaken the magnetic field intensity of upper level magnetic pole, or
Person's upper level magnetic pole does not apply electric current, can in suitably control crystallizer in the case of the molten steel surface wave of central area
Molten steel surface is still kept certain flow velocity and heat-exchange capacity, and then be conducive to fusing and the dross inclusion adsorption of covering slag,
So as to obtain good electromagnetic braking effect.
Brief description of the drawings
Fig. 1 (is provided with a pair for the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold of the present invention
Horizontal magnetic pole) structural representation；
Fig. 2 arranges schematic diagram for the Mold flowing of the vertical electro-magnetic braking device in Fig. 1 with magnetic pole；
Fig. 3 (a) be Fig. 1 in vertical electro-magnetic braking device two vertical magnetic poles and a pair of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole is vertically embedded on horizontal magnetic pole)；
Fig. 3 (b) be Fig. 1 in vertical electro-magnetic braking device two vertical magnetic poles and a pair of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole respectively the upper and lower surface of horizontal magnetic pole is vertical with horizontal magnetic pole be connected)；
Fig. 3 (c) be Fig. 1 in vertical electro-magnetic braking device two vertical magnetic poles and a pair of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole only the upper surface of horizontal magnetic pole is vertical with horizontal magnetic pole be connected)；
Fig. 3 (d) be Fig. 1 in vertical electro-magnetic braking device two vertical magnetic poles and a pair of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole only the lower surface of horizontal magnetic pole is vertical with horizontal magnetic pole be connected)；
Fig. 4 (is provided with two pairs for the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold of the present invention
Horizontal magnetic pole) structural representation；
Mold flowings and magnetic pole arrangement schematic diagram (knot of the Fig. 5 (a) for the vertical electro-magnetic braking device in Fig. 4
The brilliant wide face direction of device)；
Mold flowings and magnetic pole arrangement schematic diagram (knot of the Fig. 5 (b) for the vertical electro-magnetic braking device in Fig. 4
Brilliant device leptoprosopy direction)；
Fig. 6 (a) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole, which is respectively perpendicular, to be embedded on upper level magnetic pole and lower horizontal magnetic pole)；
Fig. 6 (b) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole is only vertically embedded on lower horizontal magnetic pole)；
Fig. 6 (c) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole is only vertically embedded on upper level magnetic pole)；
Fig. 6 (d) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
(vertical magnetic pole is vertically embedded on upper level magnetic pole connected mode schematic diagram, and vertical magnetic pole is under lower horizontal magnetic pole
Surface is vertical with horizontal magnetic pole to be connected)；
Fig. 6 (e) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole respectively the upper and lower surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole be connected)；
Fig. 6 (f) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole only the upper surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole be connected)；
Fig. 6 (g) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole upper level magnetic pole lower surface it is vertical with horizontal magnetic pole be connected, and vertical magnetic pole exists
The lower surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole to be connected)；
Fig. 6 (h) be Fig. 4 in vertical electro-magnetic braking device two vertical magnetic poles and two pairs of horizontal magnetic poles in intersection
Connected mode schematic diagram (vertical magnetic pole only the lower surface of upper level magnetic pole is vertical with horizontal magnetic pole be connected)；
Fig. 7 (is used in Fig. 1 for the vertical magnetic pole in crystallizer center side section centrally along the Distribution of Magnetic Field figure of short transverse
Vertical electro-magnetic braking device)；
Fig. 8 (a) is the liquid fluctuating situation map without molten metal near the crystallizer side under the conditions of electromagnetic braking (using figure
Vertical electro-magnetic braking device in 1)；
Fig. 8 (b) (uses figure for the liquid fluctuating situation map for having molten metal near the crystallizer side under the conditions of electromagnetic braking
Vertical electro-magnetic braking device in 1)；
Fig. 9 is Mold internal magnetic field distribution map (the vertical electromagnetism in using Fig. 1 when applying 850A electric currents
Brake apparatus)；
Figure 10 (a) is that the flow field of molten steel distribution map without the crystallizer center side section under the conditions of electromagnetic braking (uses Fig. 1
In vertical electro-magnetic braking device)；
Figure 10 (b) (uses Fig. 1 for the flow field of molten steel distribution map for having the crystallizer center side section under the conditions of electromagnetic braking
In vertical electro-magnetic braking device)；
Figure 11 (adopts for the molten steel surface velocity distribution map with/without the crystallizer center side section under the conditions of electromagnetic braking
With the vertical electro-magnetic braking device in Fig. 1)；
In figure, 1-horizontal magnetic pole, 2-magnet exciting coil, 3-vertical magnetic pole, 4-invasive nozzle, 5-yoke, 6-steel
Liquid surface, 7-crystallizer, 8-solidified shell.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, a kind of vertical electro-magnetic braking device for controlling molten steel flow in continuous cast mold, including horizontal magnetic
Pole 1, magnet exciting coil 2, vertical magnetic pole 3 and yoke 5；The horizontal magnetic pole 1 is provided with a pair, and vertical magnetic pole 3 is provided with two pairs；A pair of institutes
Horizontal magnetic pole 1 is stated positioned at the lower section of invasive nozzle 4 and is arranged along the wide face of crystallizer 7, two pairs of vertical magnetic poles 3 be respectively arranged in
The two sides areas adjacent of crystallizer 7, two vertical magnetic poles 3 intersect with a pair of horizontal magnetic poles 1；The magnet exciting coil 2 and yoke 5
Mutually it is equipped with horizontal magnetic pole 1, electric current is applied by magnet exciting coil 2, stable state is produced between horizontal magnetic pole 1 and vertical magnetic pole 3
The molten steel of flowing during steady magnetic field by, by the electromagnetic force in opposite direction with molten steel flow, passing through electromagnetism in magnetic field, crystallizer 7
The flowing of molten steel in power control crystallizer 7.
As shown in Fig. 4,5 (a), 5 (b), the vertical electro-magnetic braking device of molten steel flow, bag in a kind of control continuous cast mold
Include horizontal magnetic pole 1, magnet exciting coil 2, vertical magnetic pole 3 and yoke 5；The horizontal magnetic pole 1 and vertical magnetic pole 3 are equipped with two pairs；One
It is located at the lower section of invasive nozzle 4 to the horizontal magnetic pole 1 and is arranged along the wide face of crystallizer 7, and is designated as lower horizontal magnetic pole 1；Separately
Horizontal magnetic pole 1 described in a pair is located in crystallizer 7 near molten steel surface 6 and arranged along the wide face of crystallizer 7, and is designated as upper level
Magnetic pole 1；Two pairs of vertical magnetic poles 3 are respectively arranged in the two sides areas adjacent of crystallizer 7, two vertical magnetic poles 3 and two pairs of water
Flat magnetic pole 1 intersects；The magnet exciting coil 2 and yoke 5 are mutually equipped with horizontal magnetic pole 1, and electric current is applied by magnet exciting coil 2,
Produce steady magnetic field between horizontal magnetic pole 1 and vertical magnetic pole 3, in crystallizer 7 molten steel of flowing by during steady magnetic field by
The electromagnetic force in opposite direction with molten steel flow, the flowing of molten steel in crystallizer 7 is controlled by electromagnetic force.
As shown in Fig. 3 (a)~3 (d), the connected mode of two pairs of vertical magnetic poles 3 and a pair of horizontal magnetic poles 1 in intersection
For：
1. vertical magnetic pole 3 is vertically embedded on horizontal magnetic pole 1；
2. vertical magnetic pole 3 is connected the upper and lower surface of horizontal magnetic pole 1 is vertical with horizontal magnetic pole 1 respectively；
3. vertical magnetic pole 3 is only connected the upper surface of horizontal magnetic pole 1 is vertical with horizontal magnetic pole 1；
4. vertical magnetic pole 3 is only connected the lower surface of horizontal magnetic pole 1 is vertical with horizontal magnetic pole 1.
As shown in Fig. 6 (a)~6 (h), the connected mode of two pairs of vertical magnetic poles 3 and two pairs of horizontal magnetic poles 1 in intersection
For：
1. vertical magnetic pole 3, which is respectively perpendicular, is embedded on upper level magnetic pole 1 and lower horizontal magnetic pole 1；
2. vertical magnetic pole 3 is only vertically embedded on lower horizontal magnetic pole 1；
3. vertical magnetic pole 3 is only vertically embedded on upper level magnetic pole 1；
4. vertical magnetic pole 3 is vertically embedded on upper level magnetic pole 1, and vertical magnetic pole 3 is in the following table of lower horizontal magnetic pole 1
Face is vertical with horizontal magnetic pole 1 to be connected；
5. vertical magnetic pole 3 is connected the upper and lower surface of lower horizontal magnetic pole 1 is vertical with horizontal magnetic pole 1 respectively；
6. vertical magnetic pole 3 is only connected the upper surface of lower horizontal magnetic pole 1 is vertical with horizontal magnetic pole 1；
7. vertical magnetic pole 3 upper level magnetic pole 1 lower surface it is vertical with horizontal magnetic pole 1 be connected, and vertical magnetic pole 3 is under
The lower surface of the horizontal magnetic pole 1 in portion is vertical with horizontal magnetic pole 1 to be connected；
8. vertical magnetic pole 3 is only connected the lower surface of upper level magnetic pole 1 is vertical with horizontal magnetic pole 1.
The requirement for height of the vertical magnetic pole 3 is covering is from the top 100mm of molten steel surface in crystallizer 76 and extends downwardly
1000mm region.
The width range of the vertical magnetic pole 3 is 50mm~400mm.
The magnetic induction intensity of steady magnetic field is 0.01T~3T between the horizontal magnetic pole 1 and vertical magnetic pole 3.
According to the regulation change of the width of crystallizer 7 and being actually needed for control molten steel flow, in the width of crystallizer 7
On, the binding site of the vertical magnetic pole 3 and horizontal magnetic pole 1 freely select.
Embodiment one
In the present embodiment, using the vertical electro-magnetic braking device shown in Fig. 1, vertical magnetic pole 3 uses Fig. 3 with horizontal magnetic pole 1
(a) connected mode, vertical magnetic pole 3 covers the side of crystallizer 7 and gone out from the region of molten steel surface 6 to invasive nozzle 4 in height
The shock point and the lower zone of horizontal magnetic pole 1 of molten steel are flowed, the sectional dimension of crystallizer 7 is 300mm × 50mm, vertical magnetic pole 3
Highly it is 240mm.
Apply 700A and 1050A electric current respectively on the magnet exciting coil 2 of horizontal magnetic pole 1, and crystallizer center side is cut
The vertical magnetic pole in face centrally along short transverse Distribution of Magnetic Field figure, as shown in Figure 7.
As seen from Figure 7, as current strength increases, magnetic induction intensity gradually increases, in the horizontal overlay area of magnetic pole 1
The heart reaches maximum；When the electric current of application increases to 1050A by 700A, the maximum magnetic induction at the horizontal center of magnetic pole 1 is by 0.46T
Increase to 0.52T；And on the top and bottom of vertical magnetic pole 3, i.e. the molten steel surface 6 of crystallizer 7 nearby and below horizontal magnetic pole 1,
Its magnetic induction intensity is in 0.21T to 0.25T.Therefore, vertical magnetic pole 3 is illustrated in the case where being not provided with magnet exciting coil 2, by vertical
The connection of formula magnetic pole 3 and horizontal magnetic pole 1, the area that can be just covered using the magnet exciting coil 2 of horizontal magnetic pole 1 in vertical magnetic pole 2
Domain produces stronger magnetic field, it is achieved thereby that controlling the purpose of molten steel flow in crystallizer 7.
Embodiment two
In the present embodiment, using the vertical electro-magnetic braking device shown in Fig. 1, in order to more intuitively observe in crystallizer 7
Liquid fluctuating situation, test object selects low-melting alloy SnPbBi molten metal；Vertical magnetic pole 3 uses Fig. 3 with horizontal magnetic pole 1
(b) connected mode, vertical magnetic pole 3 covers the side of crystallizer 7 and gone out from the region of molten steel surface 6 to invasive nozzle 4 in height
The shock point and the lower zone of horizontal magnetic pole 1 of molten steel are flowed, the thickness of crystallizer 7 is 100mm, and the half-breadth size of crystallizer 7 is
600mm, the height of vertical magnetic pole 3 is 440mm, and the side opening inclination angle of invasive nozzle 4 is -15 °, and the intrusion of invasive nozzle 4 is deep
Spend for 100mm, its casting speed is 1.27m/min.
Apply electric current on the magnet exciting coil 2 of horizontal magnetic pole 1, make to be located in the crystallizer 7 in the middle of a pair of vertical magnetic poles 3 and produce
Raw 0.28T or so magnetic field, and with/without the liquid fluctuating situation of molten metal near the crystallizer side under the conditions of electromagnetic braking
Figure, shown in such as Fig. 8 (a), Fig. 8 (b).
From Fig. 8 (a), when not applying magnetic field, i.e., without electromagnetic braking under the conditions of, speed of being backflowed on molten metal is larger,
Molten metal surface is by intense impact and disturbance, and the surge area width on molten metal surface reaches about the 2/3 of whole cross section.By scheming
8 (b) is visible, and when magnetic induction intensity reaches 0.28T or so, molten metal surface is tended to be steady and fluctuated and significantly reduces, molten metal
The wave zone field width on surface is reduced to the 1/3 of whole cross section.Therefore, illustrate that the vertical electro-magnetic braking device of the present invention can be effective
Suppress the fluctuation of liquid level near crystallizer side, be conducive to preventing slag.
Embodiment three
In the present embodiment, using the vertical electro-magnetic braking device shown in Fig. 1, vertical magnetic pole 3 uses Fig. 3 with horizontal magnetic pole 1
(c) connected mode, then the height of vertical magnetic pole 3 of the horizontal lower section of magnetic pole 1 is 0mm, and vertical magnetic pole 3 covers crystallizer in height
7 sides go out to flow the shock point and the upper area of horizontal magnetic pole 1 of molten steel, crystallizer 7 from the region of molten steel surface 6 to invasive nozzle 4
Sectional dimension be 1400mm × 230mm, the side opening inclination angle of invasive nozzle 4 is -15 °, and the depth of invasion of invasive nozzle 4 is
170mm, casting speed is 1.6m/min.
The application 850A electric current on the magnet exciting coil 2 of horizontal magnetic pole 1, and molten steel internal magnetic field distribution map in crystallizer 7
As shown in figure 9, and flow field of molten steel distribution map such as Figure 10 (a) with/without the crystallizer center side section under the conditions of electromagnetic braking,
Shown in Figure 10 (b), and with/without the molten steel surface velocity distribution map such as figure in the crystallizer center side section under the conditions of electromagnetic braking
Shown in 11.
As seen from Figure 9, magnetic induction intensity is concentrated mainly on the region that horizontal magnetic pole 1 is covered with vertical magnetic pole 3 in molten steel,
And using be provided with magnet exciting coil 21 overlay area of horizontal magnetic pole magnetic induction intensity to be most strong, maximum reaches 0.356T,
And the magnetic induction intensity of vertical 3 overlay areas of magnetic pole is in 0.2T~0.3T or so.Therefore, illustrate that vertical magnetic pole 3 is being not provided with
In the case of magnet exciting coil 2, by the connection of vertical magnetic pole 3 and horizontal magnetic pole 1, using the magnet exciting coil 2 of horizontal magnetic pole 1 with regard to energy
Enough regions covered in vertical magnetic pole 2 produce stronger magnetic field, it is achieved thereby that controlling the mesh of molten steel flow in crystallizer 7
's.
As seen from Figure 11, under the conditions of electromagnetic braking, the Peak Flow Rate on molten steel surface is reduced to by 0.5m/s in crystallizer 7
0.38m/s or so, while from Figure 10 (b), the molten steel flow in the whole wide face of crystallizer 7 forms flat below horizontal magnetic pole 1
Plug-flow, the impact depth for the molten steel that backflowed this significantly reduces under, and the center of vorticity that backflows under being formed under the conditions of without electromagnetic braking will
Disappear (backflow center of vorticity under clearly visible in Figure 10 (a)), and then be conducive to the floating of field trash and bubble.Therefore, this is illustrated
The vertical electro-magnetic braking device of invention can effectively control crystallizer side molten steel surface wave and molten steel surface velocity, while
The central area molten steel of crystallizer 7 can be controlled to flow downward.
Scheme in embodiment and the scope of patent protection for being not used to the limitation present invention, it is all without departing from carried out by the present invention etc.
Effect is implemented or changed, and is both contained in the scope of the claims of this case.
Claims (8)
1. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold, it is characterised in that：Including horizontal magnetic pole,
Magnet exciting coil, vertical magnetic pole and yoke；The horizontal magnetic pole is provided with a pair, and vertical magnetic pole is provided with two pairs；Horizontal magnetic described in a pair
Pole is located at below invasive nozzle and arranges that two pairs of vertical magnetic poles are respectively arranged in crystallizer two sides along the wide face of crystallizer
Areas adjacent, two vertical magnetic poles intersect with a pair of horizontal magnetic poles；The magnet exciting coil and yoke match with horizontal magnetic pole
Dress, electric current is applied by magnet exciting coil, and the steel of flowing in steady magnetic field, crystallizer is produced between horizontal magnetic pole and vertical magnetic pole
Liquid during steady magnetic field by, by the electromagnetic force in opposite direction with molten steel flow, the stream of Mold being controlled by electromagnetic force
It is dynamic.
2. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold, it is characterised in that：Including horizontal magnetic pole,
Magnet exciting coil, vertical magnetic pole and yoke；The horizontal magnetic pole and vertical magnetic pole are equipped with two pairs；Horizontal magnetic pole is located at described in a pair
Arranged below invasive nozzle and along the wide face of crystallizer, and be designated as lower horizontal magnetic pole；Horizontal magnetic pole described in another pair is located at knot
Molten steel near surface and arranged in brilliant device along the wide face of crystallizer, and be designated as upper level magnetic pole；Two pairs of vertical magnetic pole difference
Crystallizer two sides areas adjacent is arranged in, two vertical magnetic poles intersect with two pairs of horizontal magnetic poles；The magnet exciting coil and magnetic
Yoke is mutually equipped with horizontal magnetic pole, and electric current is applied by magnet exciting coil, and stable state magnetic is produced between horizontal magnetic pole and vertical magnetic pole
, the molten steel of flowing during steady magnetic field by, by the electromagnetic force in opposite direction with molten steel flow, passing through electromagnetic force in crystallizer
Control the flowing of Mold.
3. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold according to claim 1, it is special
Levy and be：Two pairs of vertical magnetic poles are in the connected mode of intersection with a pair of horizontal magnetic poles：
1. vertical magnetic pole is vertically embedded on horizontal magnetic pole；
2. vertical magnetic pole is connected the upper and lower surface of horizontal magnetic pole is vertical with horizontal magnetic pole respectively；
3. vertical magnetic pole is only connected the upper surface of horizontal magnetic pole is vertical with horizontal magnetic pole；
4. vertical magnetic pole is only connected the lower surface of horizontal magnetic pole is vertical with horizontal magnetic pole.
4. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold according to claim 2, it is special
Levy and be：Two pairs of vertical magnetic poles are in the connected mode of intersection with two pairs of horizontal magnetic poles：
1. vertical magnetic pole, which is respectively perpendicular, is embedded on upper level magnetic pole and lower horizontal magnetic pole；
2. vertical magnetic pole is only vertically embedded on lower horizontal magnetic pole；
3. vertical magnetic pole is only vertically embedded on upper level magnetic pole；
4. vertical magnetic pole is vertically embedded on upper level magnetic pole, and vertical magnetic pole is in the lower surface and water of lower horizontal magnetic pole
Flat magnetic pole is vertically connected；
5. vertical magnetic pole is connected the upper and lower surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole respectively；
6. vertical magnetic pole is only connected the upper surface of lower horizontal magnetic pole is vertical with horizontal magnetic pole；
7. vertical magnetic pole upper level magnetic pole lower surface it is vertical with horizontal magnetic pole be connected, and vertical magnetic pole is in lower horizontal
The lower surface of magnetic pole is vertical with horizontal magnetic pole to be connected；
8. vertical magnetic pole is only connected the lower surface of upper level magnetic pole is vertical with horizontal magnetic pole.
5. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold according to claim 3 or 4, its
It is characterised by：The height of the vertical magnetic pole is positioned at from Mold surface 100mm and extending downwardly 1000mm
Region in.
6. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold according to claim 3 or 4, its
It is characterised by：The width range of the vertical magnetic pole is 50mm~400mm.
7. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold according to claim 3 or 4, its
It is characterised by：The magnetic induction intensity of steady magnetic field is 0.01T~3T between the horizontal magnetic pole and vertical magnetic pole.
8. the vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold according to claim 3 or 4, its
It is characterised by：According to the regulation change of crystallizer width and being actually needed for control molten steel flow, in crystallizer width
On, the binding site of the vertical magnetic pole and horizontal magnetic pole freely select.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580291.5A CN106041009B (en) | 2016-07-22 | 2016-07-22 | The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold |
| PCT/CN2017/087116 WO2018014663A1 (en) | 2016-07-22 | 2017-06-05 | Vertical electromagnetic braking device for controlling flow of molten steel in continuous casting crystallizer |
| EP17830300.4A EP3441158B1 (en) | 2016-07-22 | 2017-06-05 | Vertical electromagnetic braking device for controlling flow of molten steel in continuous casting crystallizer |
| JP2018553130A JP6637618B2 (en) | 2016-07-22 | 2017-06-05 | Vertical electromagnetic brake system for controlling molten steel flow in continuous casting mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580291.5A CN106041009B (en) | 2016-07-22 | 2016-07-22 | The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold |
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| CN106041009B true CN106041009B (en) | 2017-10-31 |
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| Country | Link |
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| EP (1) | EP3441158B1 (en) |
| JP (1) | JP6637618B2 (en) |
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| CN106041009B (en) * | 2016-07-22 | 2017-10-31 | 东北大学 | The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold |
| CN109604551B (en) * | 2019-01-14 | 2020-08-25 | 辽宁石油化工大学 | Independent adjustable combined electromagnetic braking device and method for controlling molten steel flow |
| CN114734005B (en) * | 2022-03-22 | 2024-01-26 | 安徽工业大学 | Electromagnetic braking device and method for controlling molten steel flow in tundish |
| CN114833332A (en) * | 2022-04-14 | 2022-08-02 | 一重集团大连工程技术有限公司 | Ladle nozzle flow adjusting device |
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| JP2726096B2 (en) * | 1989-04-27 | 1998-03-11 | 川崎製鉄株式会社 | Continuous casting method of steel using static magnetic field |
| JP3236422B2 (en) * | 1992-10-16 | 2001-12-10 | 川崎製鉄株式会社 | Continuous casting method of steel using magnetic field |
| SE503562C2 (en) * | 1995-02-22 | 1996-07-08 | Asea Brown Boveri | Methods and apparatus for string casting |
| DE19625932A1 (en) * | 1996-06-28 | 1998-01-08 | Schloemann Siemag Ag | Electromagnetic brake for a continuous casting mold |
| CA2261142A1 (en) * | 1997-05-29 | 1998-12-03 | Shigenobu Takata | Electromagnetic braking device for continuous casting mold and method of continuous casting by using the same |
| SE523157C2 (en) * | 1997-09-03 | 2004-03-30 | Abb Ab | Method and apparatus for controlling the metal flow during extrusion by electromagnetic fields |
| JP2001232450A (en) * | 2000-02-22 | 2001-08-28 | Kawasaki Steel Corp | Method for manufacturing continuous cast slab |
| FR2845626B1 (en) * | 2002-10-14 | 2005-12-16 | Rotelec Sa | PROCESS FOR CONTROLLING METAL MOVEMENTS IN A BRAMES CONTINUOUS CASTING LINGOTIERE |
| CN101259523B (en) * | 2008-04-18 | 2011-01-19 | 东北大学 | Electro-magnetic braking device for controlling molten metal flow in continuous cast crystallizer |
| CN102436900A (en) * | 2011-12-02 | 2012-05-02 | 孙祖桐 | Magnet differential type electric permanent magnet device |
| GB201305822D0 (en) * | 2013-03-28 | 2013-05-15 | Pavlov Evgeny | Improvements in and relating to apparatus and methods |
| CN203621423U (en) * | 2013-12-25 | 2014-06-04 | 北京科技大学 | Electromagnetism braking device for centralizing magnetic area in continuous casting crystallizer |
| CN106041009B (en) * | 2016-07-22 | 2017-10-31 | 东北大学 | The vertical electro-magnetic braking device of molten steel flow in a kind of control continuous cast mold |
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| CN106041009A (en) | 2016-10-26 |
| EP3441158A1 (en) | 2019-02-13 |
| JP2019510641A (en) | 2019-04-18 |
| WO2018014663A1 (en) | 2018-01-25 |
| EP3441158B1 (en) | 2020-04-22 |
| EP3441158A4 (en) | 2019-05-01 |
| JP6637618B2 (en) | 2020-01-29 |
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