CN109158563B - Continuous cast mold magnetic stirrer with resultant field - Google Patents
Continuous cast mold magnetic stirrer with resultant field Download PDFInfo
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- CN109158563B CN109158563B CN201811290027.3A CN201811290027A CN109158563B CN 109158563 B CN109158563 B CN 109158563B CN 201811290027 A CN201811290027 A CN 201811290027A CN 109158563 B CN109158563 B CN 109158563B
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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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Abstract
The application belongs to continuous casting installation for casting technical field, discloses a kind of continuous cast mold magnetic stirrer with resultant field, comprising: annular yoke, multiple travelling-magnetic-field generating means and multiple rotating excitation field generating means；Annular yoke is located at outside crystallizer, is equipped with travelling-magnetic-field generating means and rotating excitation field generating means between annular yoke inner wall and crystallizer outer wall；Travelling-magnetic-field generating means include c-type magnetic core and travelling-magnetic-field coil, and the coiling direction of travelling-magnetic-field coil and the submersed nozzle outlet jet direction of continuous cast mold are vertical；Rotating excitation field generating means include rectangle iron core and rotating excitation field coil, and rotating excitation field coil winding direction is parallel to molten steel flow direction.Using resultant field, rotating excitation field and travelling-magnetic-field respectively advantage can be integrated, improve the floating environment of field trash and bubble during casting blank solidification, improve the cleanliness of molten steel.
Description
Technical field
The invention belongs to continuous casting of iron and steel equipment technical fields, more particularly to a kind of continuous cast mold electricity with resultant field
Magnetic stirrer.
Background technique
With the high speed development of modern industry, people are increasing to the demand of high-quality steel part, to quality requirements by
Step improves.Electromagnetic agitating technology has been widely used in continuous casting at present, has important influence to slab quality is improved,
And have become to obtain the essential link of high-quality slab, magnetic stirrer has become the standard configuration of high efficiency continuous casting.
The essence of electromagnetic agitation is that the electromagnetic force inducted in casting blank liquid core by electromagnetic field strengthens molten steel in liquid core
Movement, thus strengthen molten steel convection current, heat transfer and mass transport process, generate inhibit column trichite exhibition, promote ingredient uniformly, be mingled with
The thermodynamics and kinetics condition that object floating is refined, is evenly distributed, and then control casting blank solidification tissue improvement slab quality.
There are many design studies in relation to slab continuous casting, and each emphasis is different: adding C row shield on the outside of coil, prevent
Leak-stopping magnetic and guarantee electromagnetic agitation efficiency；Movable coil is set, guarantees multiple location stirring；More stirring region stirrings are adjusted
Device, etc..In the continuous casting production process of square billet, there is stirring dead zone in square billet corner, stirring is uneven, influence slab entirety matter
Amount, molten steel begin to cool solidification in a crystallizer, form one layer of very thin solidified shell, submersed nozzle outlet jet speed mistake
Greatly, impact depth is increased, is unfavorable for the floating of field trash and bubble, and excessively high effluxvelocity can be destroyed and just solidify formation
Casting blank shell seriously affects slab quality.
Rotary electromagnetic field is generallyd use using M-EMS in industry continuous casting at present, rotary electromagnetic field is to steel
Liquid carries out lateral stirring, keeps Mold Temperature Distribution more uniform, destroys solidified structure column crystal, increases equiax crystal
Rate, reduces slab degree of segregation, but rotating excitation field to the floating effect of Mold non-metallic inclusion and bubble very
Micro-, travelling-magnetic-field direction and mouth of a river jet direction to Mold on the contrary, can carry out longitudinal stirring, to reduction immersion
Water-gap outlets jet velocity and reduction water-gap outlets impact depth have significant impact.In addition, travelling-magnetic-field can promote to press from both sides
The floating of sundries and bubble improves the degree of purity of slab, but travelling-magnetic-field is improving equiaxial crystal ratio, reduces slab segregation aspect
It is barely satisfactory.
Summary of the invention
Using resultant field, rotating excitation field and travelling-magnetic-field respectively advantage can be integrated, to Mold into
Row stirring improves field trash and bubble during casting blank solidification under the premise of guaranteeing slab equiaxial crystal ratio and segregation standard
Floating environment, improve the cleanliness of molten steel.
Promote Mold nonmetallic to guarantee that slab equiaxial crystal ratio and lower degree of segregation combine
The floating of field trash and bubble obtains high-quality clean steel billet, and the effect of more preferable prominent M-emss, the application proposes
A kind of M-emss with resultant field, the resultant field are made of travelling-magnetic-field and rotating excitation field, traveling wave
Magnetic direction is contrary with submersed nozzle outlet jet, and molten steel begins to cool solidification in crystallizer, in crystallizer wall surface
Thin layer green shell is formed, the presence of travelling-magnetic-field can reduce water-gap outlets jet stream and wash away to wall surface, avoid damage to just solidify
At thin stock layer, influence Cleanliness of Molten Steel, and reduce the impact depth of outlet molten steel, and travelling-magnetic-field is to improving slab equiax crystal
Rate has little effect, and the equiaxial crystal ratio of slab can be improved but it cannot be guaranteed that good field trash and bubble in opposite rotating excitation field
Floating condition.Therefore travelling-magnetic-field and rotating excitation field respectively advantage are taken, collective effect is protected in crystallizer to obtain high-quality clean steel
Convoy is driven, specific structure includes:
Annular yoke, N number of travelling-magnetic-field generating means and N number of rotating excitation field generating means, N are more than or equal to 4 and small
In the positive integer for being equal to 10；
Annular yoke is located at outside crystallizer, and it is raw that travelling-magnetic-field is equipped between annular yoke inner wall and crystallizer outer wall
At device and rotating excitation field generating means, N number of travelling-magnetic-field generating means surround annular yoke central axes and are centrosymmetric
Distributing installation is on annular yoke inner wall, the corresponding rotating excitation field generating means in the lower part of each travelling-magnetic-field generating means,
N number of rotating excitation field generating means are also centrosymmetric distributing installation on annular yoke inner wall；
Travelling-magnetic-field generating means include c-type magnetic core and travelling-magnetic-field coil, the first horizontal edge and the second horizontal edge of c-type magnetic core
Open end be fixed on the inner wall of annular yoke, travelling-magnetic-field coil is located at the vertical edge of c-type magnetic core, travelling-magnetic-field coil
Coiling direction is vertical with the submersed nozzle outlet jet direction of continuous cast mold；
Rotating excitation field generating means include rectangle iron core and rotating excitation field coil, and rectangle iron core is rectangular parallelepiped structure, rectangle
Towards crystallizer, the back side of rectangle iron core is mounted on the inner wall lower of annular yoke, rectangle iron core bottom and knot in the front of iron core
Brilliant device bottom is generally aligned in the same plane, and rotating excitation field coil encircling is mounted on the side of rotating excitation field iron core, top and bottom, rotation
Field coil winding direction is parallel to molten steel flow direction.
Preferably, travelling-magnetic-field coil is made of first coil and the second coil, and first coil is in c-type magnetic core vertical edge
Top, the second coil have spacing distance, first coil between the lower part of 6 vertical edge of c-type magnetic core, first coil and the second coil
It is all vertical with the submersed nozzle outlet jet direction of continuous cast mold with the coiling direction of the second coil, the continuous cast mold
Submersed nozzle outlet be located at first coil and the second coil middle position.
Preferably, c-type magnetic core and rectangle iron core all use silicon steel ferromagnetic core.
Preferably, 6 rotating excitation field generating means are divided into three groups by 6 N, and every group of rotating excitation field generating means are to crystallize
Device central axes are centrosymmetric, and are passed through equal in magnitude, identical three intersection in direction to every group of two rotating excitation field generating means
Galvanic electricity is formed in crystallizer region by the pole N to the field region of the pole S.
Preferably, travelling-magnetic-field generating means and rotating excitation field generating means are all passed through three-phase alternating current.
Preferably, the three-phase alternating current that travelling-magnetic-field generating means and the rotating excitation field generating means are passed through, frequency with
Intensity is all different.
The advantages of the application, is:
1, under rotating excitation field and travelling-magnetic-field interaction, field trash and bubble in molten steel etc. are easier to float, and subtract
Few non-metallic inclusions in molten steel content, improves the cleanliness of slab.
2, reduce the impact depth of molten steel, promote the floating of Mold impurity, reduce to crystallizer wall surface just
The green shell generation being frozen into is washed away.
3, drawing speed is correspondinglyd increase, slab casting efficiency is improved, increases steel billet yield.
4, resultant field is easier to break the tree-shaped dendrite arm in solidification of molten steel forward position, promotes the formation of equiax crystal, improves
Equiaxial crystal ratio reduces degree of segregation, improves slab quality.
5, using combined type coil, it can be passed through the electric current of obstructed intensity and frequency, generate different size of electromagnetic agitation
Power is applicable in a variety of slab types.
6, the appearance of crystallizer surface slag is avoided.
Detailed description of the invention
Sectional front view Fig. 1 of the invention；
Section left view Fig. 2 of the invention；
Cross sectional plan view Fig. 3 of the invention；
Fig. 4 is free of the positive isometric drawing of resultant field continuous cast mold of crystallizer and molten steel；
The positive isometric drawing of resultant field continuous cast mold of the Fig. 5 containing crystallizer and molten steel；
Fig. 6 resultant field continuous cast mold top view；
The electromagnetism formation zone location drawing of Fig. 7 resultant field continuous cast mold；
The crystallizer exit molten steel electromagnetic field intensity of Fig. 8 A Stimulation of Rotating Magnet Field EMS device is distributed；
The brilliant device exit molten steel electromagnetic field intensity of Fig. 8 B resultant field magnetic stirrer is distributed；
The throwing direction central cross-section magnetic field distribution of Fig. 9 A Stimulation of Rotating Magnet Field EMS device；
The throwing direction central cross-section magnetic field distribution of Fig. 9 B resultant field magnetic stirrer.
Figure label explanation:
12 travelling-magnetic-field generating means of annular yoke, 3 rotating excitation field generating means
4 travelling-magnetic-field coil, 41 first coil, 42 second coil
5 rotating excitation field coil 6C shaped iron core, 7 molten steel
8 continuous cast mold, 9 rectangle iron core, 10 travelling-magnetic-field generation area
11 rotating excitation field generation areas
Specific embodiment
Industrial commonly used M-emss generally use rotating excitation field at present, and the essence of electromagnetic agitation is
The movement for strengthening molten steel in liquid core by the electromagnetic force that electromagnetic field is inducted in casting blank liquid core, thus strengthens pair of molten steel
Stream, heat transfer and mass transport process, generate inhibit column trichite exhibition, promote ingredient uniformly, inclusion floating refinement, the heat that is evenly distributed
Mechanics and dynamic conditions, and then control casting blank solidification tissue improvement slab quality.For the mixing power for preventing rotating excitation field from generating
Too strong to cause slag, M-emss are typically mounted at continuous cast mold bottom, and on the top of crystallizer, there is stir
Blank area is mixed, mixing effect well, the application mixing magnetic mutually compound using travelling-magnetic-field and rotating excitation field cannot be played
Stirring action is played to Mold jointly in field.Travelling-magnetic-field promotes the upper of non-metallic inclusion in molten steel and bubble
It is floating, molten steel cleanness is improved, rotating excitation field improves the equiaxial crystal ratio of molten steel, reduces the segregation of slab, uses resultant field to be excellent
The production of matter clean steel provides safeguard.
Continuous cast mold magnetic stirrer in the application with resultant field, including annular yoke, N number of travelling-magnetic-field generate
Device and N number of rotating excitation field generating means, N are greater than the positive integer equal to 4 and less than or equal to 10.In the present embodiment, N is
6, that is, there are 6 travelling-magnetic-field generating means and 6 rotating excitation field generating means.
Annular yoke is located at outside crystallizer, and annular surrounds the outer wall of crystallizer and one spacing of outer wall interval with crystallizer
From, travelling-magnetic-field generating means and rotating excitation field generating means are installed between annular yoke inner wall and crystallizer outer wall, it is capable
Wave magnetic field generating arrangement and rotating excitation field generating means are fixed on annular yoke inner wall.N number of travelling-magnetic-field generating means surround
Annular yoke central axes are centrosymmetric distributing installation on annular yoke inner wall, the lower part pair of each travelling-magnetic-field generating means
A rotating excitation field generating means are answered, rotating excitation field generating means are also centrosymmetric distributing installation on annular yoke inner wall.
Each travelling-magnetic-field generating means 2 are made of c-type magnetic core 6 and travelling-magnetic-field coil 4, and c-type magnetic core 6 includes first horizontal
Side, the second horizontal edge and vertical edge, three sides constitute "] " shape, the open end of the first horizontal edge and the second horizontal edge is fixed on annular yoke
Inner wall on, travelling-magnetic-field coil 4 is located on the vertical edge of c-type magnetic core 6, the coiling direction of travelling-magnetic-field coil 4 and continuous casting knot
The submersed nozzle outlet jet direction of brilliant device is vertical, and coil is passed through three-phase alternating current and generates induced magnetic field, forms direction and water
The contrary travelling-magnetic-field of mouth outlet jet.Upper lower coil generates a travelling-magnetic-field, and the direction of motion is identical, works as two panels
When the identical and internal winding line of EMS internal structure is under certain correlated condition, the travelling-magnetic-field generated can just be synthesized
One passes perpendicularly through the maximum travelling-magnetic-field of slab durection component, and the magnetic field for only passing perpendicularly through slab is only and pushes molten steel fortune
Necessary to dynamic.The alternating magnetic field for passing perpendicularly through slab will necessarily induce induced current in slab, and this induced current with
Local magnetic field interaction generates electromagnetic force and the direction of electromagnetic force is consistent with travelling-magnetic-field.Prominent travelling-magnetic-field advantage, reduces
The impact depth of closing in outlet jet, slow down to crystallizer wall wash away and improve Mold non-metallic inclusion and
The floating environment of bubble.Travelling-magnetic-field coil 4 can be made of first coil and the second coil, and first coil is perpendicular in c-type magnetic core 6
The top of straight flange, the second coil have spacing distance between the lower part of 6 vertical edge of c-type magnetic core, first coil and the second coil, the
One coil is all vertical with the submersed nozzle outlet jet direction of continuous cast mold with the coiling direction of the second coil, water-gap outlets
Positioned at the middle position of first coil and the second coil, it is in travelling-magnetic-field most strong position.
Each rotating excitation field generating means 3 include rectangle iron core 9 and rotating excitation field coil 5, and rectangle iron core 9 is cuboid knot
Structure, towards crystallizer, the back side of rectangle iron core 9 is mounted on the inner wall lower of annular yoke, rectangle iron core in the front of rectangle iron core 9
9 bottoms are generally aligned in the same plane with crystalliser feet, and rotating excitation field coil 5 is mounted on the side of rectangle iron core 9, top and bottom,
5 winding direction of rotating excitation field coil is parallel to molten steel flow direction, side, top and bottom in rectangle iron core 9, and and three-phase
Exchange is electrically connected.Alternating current is passed through to rotating excitation field coil 5 and generates rotating excitation field, the molten steel of movement is under the action of induced magnetic field
Rotary inductive electromagnetic force is generated, the flowing of molten steel is strengthened, keeps molten steel temperature distribution more uniform.N number of rotating excitation field generating means 3
It is centrosymmetric distribution with crystallizer central axes, is aligned one by one with the c-type magnetic core 6 of N number of travelling-magnetic-field generation area.In the present embodiment
It is three groups that 6 rotating excitation field generating means 3, which are divided, and every group of rotating excitation field generating means are centrosymmetric with crystallizer central axes,
It is passed through equal in magnitude, the identical three-phase alternating current in direction to every group of rotating excitation field generating means 3, is formed in crystallizer region by N
Pole is to the field region of the pole S, and every group of rotating excitation field generating means interaction generates rotary magnetic place after being passed through three-phase alternating current
Domain, clockwise or counterclockwise, the application position by the three-phase current of every group of rotating excitation field generating means is related for magnetic field rotation direction,
The molten steel of movement generates rotary inductive electromagnetic force under the action of incuding rotating excitation field, strengthens the flowing of molten steel, makes molten steel temperature
It is distributed more uniform, increase steel billet equiaxial crystal ratio reduction slab segregation.
In the present embodiment, the general 800mm of continuous casting crystallizer height, resultant field M-emss height with
Crystallizer flushes, therefore the travelling-magnetic-field generation area 10 generated by 6 travelling-magnetic-field generating means is upper, and right at the top of crystallizer
Together, travelling-magnetic-field generation area height is 340mm, by the rotating excitation field generation area 11 of 6 rotating excitation field generating means generation under,
It is aligned with crystalliser feet, rotating excitation field generation area height is 460mm.C-type magnetic core 6 and rectangle iron core 9 all use silicon steel sheet stack
Add.Silicon steel has highest saturation induction density (2.0T or more) in common soft magnetic materials, using silicon steel sheet as line
Enclosing wound stator has preferable magnetic permeability, can reduce magnetic hystersis loss, and since stator can be enhanced in the addition of element silicon
Resistivity, reduce the eddy-current loss of wound stator, greatly reduce due to loss generate heat, be conducive to crystallizer electromagnetism
The heat dissipation of blender.Distance is 100mm between first coil and the second coil, because industrial continuous casting immersion outlet is general
Immersion depth is 80~120mm, so that water-gap outlets are located at the middle position of two coils on yoke, are in travelling-magnetic-field
Most strong position makes travelling-magnetic-field play maximum effect, reduces the impact depth of closing in outlet jet, slows down to crystallizer wall
The floating environment for washing away and improving Mold non-metallic inclusion and bubble.
When operation, rotating excitation field generating means are passed through current strength identical with traditional M-emss and electric current
Frequency is passed through the electric current of 500A, 5Hz；Since travelling-magnetic-field generation zone position is closer away from crystallizer meniscus, to avoid bent moon
Surface wave is dynamic excessively acutely to cause slag, therefore travelling-magnetic-field generating means are passed through with the alternating current of low frequency, light current intensity of flow, i.e., logical
Enter the electric current of 300A, 3Hz.
The magnetic distribution for comparing rotary magnetic field stirring device and resultant field blender intercepts one in crystallizer exit
Plane applies current strength and frequency size phase in resultant field region due to two kinds of blenders it can be seen from Fig. 8 A and 8B
Together, therefore the two is roughly the same in crystallizer exit magnetic distribution；
Due to the presence of travelling-magnetic-field formation zone, on crystallizer molten steel top there is the electromagnetic field in throwing direction, by
The throwing direction central cross-section magnetic field strength of Stimulation of Rotating Magnet Field EMS device and resultant field magnetic stirrer in Fig. 9 A and Fig. 9 B
Distribution acts on crystallization it is found that resultant field magnetic stirrer is superimposed generation resultant field with rotating excitation field generation in intermediate region
Device molten steel can achieve the floating for promoting field trash in molten steel, slow down the purpose of the impact depth of molten steel.
For the application compared with the industrial commonly used three-phase the two poles of the earth M-emss of current continuous casting, use is compound
Magnetic field electromagnetic stirring system, the respective advantage of collection travelling-magnetic-field and rotating excitation field, Mold is implemented in all directions
Mixing effect mixes molten steel in crystallizer more uniform, and the slabs axialite device such as increase reduces segregation, reduces field trash and contains
Amount improves the cleanliness of slab, to obtain high-quality slab.The application is occurred by travelling-magnetic-field generating device and rotating excitation field
Device two parts composition requires the alternating current that can apply different frequency and intensity, according to different steel grades to be adapted to different spies
Kind steel requires the difference of stirring intensity.
Finally, it should be noted that above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to part of or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (5)
1. a kind of continuous cast mold magnetic stirrer with resultant field, it is characterised in that: include: annular yoke, N number of traveling wave magnetic
Field generating means and N number of rotating excitation field generating means, N are the positive integer more than or equal to 4 and less than or equal to 10；
The annular yoke is located at outside crystallizer, and it is raw that travelling-magnetic-field is equipped between annular yoke inner wall and crystallizer outer wall
At device and rotating excitation field generating means, N number of travelling-magnetic-field generating means surround annular yoke central axes and are centrosymmetric
Distributing installation is on annular yoke inner wall, the corresponding rotating excitation field generating means in the lower part of each travelling-magnetic-field generating means,
N number of rotating excitation field generating means are also centrosymmetric distributing installation on annular yoke inner wall；
The travelling-magnetic-field generating means include c-type magnetic core and travelling-magnetic-field coil, the first horizontal edge and the second horizontal edge of c-type magnetic core
Open end be fixed on the inner wall of annular yoke, travelling-magnetic-field coil is located at the vertical edge of c-type magnetic core；The travelling-magnetic-field line
Circle is made of first coil and the second coil, and for first coil on the top of c-type magnetic core vertical edge, the second coil is perpendicular in c-type magnetic core
, there is a spacing distance in the lower part of straight flange between first coil and the second coil, the coiling direction of first coil and the second coil all with
The submersed nozzle outlet jet direction of continuous cast mold is vertical；
The rotating excitation field generating means include rectangle iron core and rotating excitation field coil, and rectangle iron core is rectangular parallelepiped structure, rectangle
Towards crystallizer, the back side of rectangle iron core is mounted on the inner wall lower of annular yoke, rectangle iron core bottom and knot in the front of iron core
Brilliant device bottom is generally aligned in the same plane, and rotating excitation field coil encircling is mounted on the side of rectangle iron core, top and bottom, rotating excitation field
Coil winding direction is parallel to molten steel flow direction.
2. the continuous cast mold magnetic stirrer according to claim 1 with resultant field, it is characterised in that:
The c-type magnetic core and rectangle iron core all use silicon steel ferromagnetic core.
3. the continuous cast mold magnetic stirrer according to claim 1 with resultant field, it is characterised in that:
The N is 6,6 rotating excitation field generating means is divided into three groups, every group of rotating excitation field generating means are with crystallizer central axes
It is centrosymmetric, is passed through equal in magnitude, the identical three-phase alternating current in direction to every group of two rotating excitation field generating means, is tying
Brilliant device region is formed by the pole N to the field region of the pole S.
4. the continuous cast mold magnetic stirrer according to claim 1 with resultant field, it is characterised in that:
The travelling-magnetic-field generating means and rotating excitation field generating means are all passed through three-phase alternating current.
5. the continuous cast mold magnetic stirrer according to claim 4 with resultant field, it is characterised in that:
The three-phase alternating current that the travelling-magnetic-field generating means and the rotating excitation field generating means are passed through, frequency and intensity are not
Together.
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| CN109967708B (en) * | 2019-04-24 | 2020-01-03 | 燕山大学 | Oblique pole type crystallizer electromagnetic stirrer |
| CN109967709B (en) * | 2019-04-24 | 2020-01-03 | 燕山大学 | Combined type coil crystallizer electromagnetic stirrer |
| CN110187432B (en) * | 2019-04-30 | 2020-11-03 | 上海大学 | Preparation method and device of active microcrystalline optical fiber |
| CN110681836A (en) * | 2019-10-22 | 2020-01-14 | 石家庄爱迪尔电气有限公司 | Electromagnetic multi-cyclone stirring casting device |
| CN111468704A (en) * | 2020-05-29 | 2020-07-31 | 鞍钢股份有限公司 | Method for improving internal quality of large steel ingot |
| CN112772101B (en) * | 2021-03-03 | 2024-04-05 | 石河子大学 | Electromagnetic driving control device for liquid fertilizer |
| CN113909457A (en) * | 2021-10-15 | 2022-01-11 | 中北大学 | Preparation method of bimetal composite material based on electromagnetic liquid-solid forming |
| CN113983109B (en) * | 2021-11-18 | 2023-12-22 | 福州大学 | Composite shock absorber based on metal rubber and magnetorheological effect and working method thereof |
| CN115232999B (en) * | 2022-07-19 | 2023-03-14 | 西北工业大学 | Preparation method and system of electromagnetic suspension material |
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| JPS5850157A (en) * | 1981-09-21 | 1983-03-24 | Sumitomo Electric Ind Ltd | Mold for continuous casting |
| CN1008984B (en) * | 1987-06-01 | 1990-08-01 | 冶金工业部武汉钢铁设计研究院 | Electromagnetic stirring device for continuous steel casting |
| CN101391291B (en) * | 2008-11-05 | 2010-12-08 | 江苏大学 | Metal matrix composition home-position synthesizing method in combined electric magnetic field |
| CN103182495B (en) * | 2011-12-29 | 2015-04-22 | 宝山钢铁股份有限公司 | Multifunctional electromagnetic stirrer |
| JP2018015791A (en) * | 2016-07-28 | 2018-02-01 | アイダエンジニアリング株式会社 | Manufacturing apparatus of metal molding |
| CN107116191B (en) * | 2017-05-15 | 2020-09-29 | 东北大学 | Combined type spiral electromagnetic stirrer |
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