CN109128068A - The electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced - Google Patents

The electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced Download PDF

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Publication number
CN109128068A
CN109128068A CN201810984788.2A CN201810984788A CN109128068A CN 109128068 A CN109128068 A CN 109128068A CN 201810984788 A CN201810984788 A CN 201810984788A CN 109128068 A CN109128068 A CN 109128068A
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CN
China
Prior art keywords
iron core
agitating roller
magnetic field
field intensity
roller shell
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Pending
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CN201810984788.2A
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Chinese (zh)
Inventor
雷作胜
李彬
董华乔
卢海彪
孙晓辉
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Publication date
Application filed by University of Shanghai for Science and Technology filed Critical University of Shanghai for Science and Technology
Priority to CN201810984788.2A priority Critical patent/CN109128068A/en
Publication of CN109128068A publication Critical patent/CN109128068A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ
    • B22D11/122Accessories for subsequent treating or working cast stock in situ using magnetic fields
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ
    • B22D11/124Accessories for subsequent treating or working cast stock in situ for cooling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The invention discloses a kind of electromagnetic agitation roller arrangements that can enhance effective magnetic field intensity, belong to metal metallurgy smelting equipment technical field.Agitating roller iron core is to be combined to be formed by fastener assembly with iron core teeth two parts by magnetic yoke, so that magnetic field caused by agitating roller is more concentrated.Agitating roller shell is formed in conjunction with exterior portion by inboard portion;Inner portion is to be overlapped mutually to be formed along core length direction by permeability magnetic material and non-magnet material, and the position of permeability magnetic material position and iron core teeth corresponds on core length direction, and permeability magnetic material is connected with non-magnet material;The outer section of agitating roller shell uses wear-resistant material;Reduce shielding of the agitating roller shell to electromagnetic field.Compared with convention stir roller, agitating roller of the present invention can not only guarantee basic wear-resisting and support strength requirement, and stronger effective magnetic field can be generated under identical electric power outputting current, the stirring efficiency of agitating roller is improved, and then provide possibility to improve casting blank solidification tissue.

Description

The electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced
Technical field
The present invention relates to a kind of electromagnetic mixing apparatus to be applied to metal smelting more particularly to a kind of electromagnetic agitation roller arrangement Golden equipment technical field.
Background technique
Secondary cooling zone electromagnetic agitating technology come out since, gradually develop into continuous casting steel machine field significant correlation technology it One.The essence of agitating roller is to strengthen the movement of molten steel by the electromagnetic force inducted in casting blank liquid core.Specifically, stirring The alternating magnetic field of roller excitation penetrates into the molten steel of slab, just induces electric current wherein, the induced current with when earth's magnetic field phase Interaction generates electromagnetic force, and electromagnetic force is body force, is acted on molten steel volume element, so as to push molten steel to move.Thus Flowing, the heat transfer even solidification that molten steel in continuous casting process can be controlled by electromagnetic force, so that continuous casting billet internal soundness be made to obtain It is apparent to improve, the cleannes of steel are improved, the isometric crystalline region of slab is expanded, component segregation is reduced, center porosity is mitigated or eliminated And central pipe, realize the purpose for producing high-quality, high-grade steel.
The design of traditional slab agitating roller is all the coiling on the iron core with part recess, and usual situation lower coil is high Degree is higher than the depth of iron core groove, certain magnetic field is generated based on linear motor principle, then magnetic fields are in specific region Molten steel.Main problem existing for this traditional stirring roller arrangement first is that the magnetic field strength of the effective magnetic field zone of action is smaller, Since the factor magnetic field strength in structure design focuses primarily upon iron core magnetic yoke position, and the magnetic field strength in slab liquid phase region It is relatively small, generally for the stirring intensity for promoting agitating roller, needs to increase the output electric current of agitating roller power supply, both increase energy The consumption in source, and a large amount of heat can be generated, the pressure in terms of cooling system is promoted, the cost of industrial processes is increased, And excessively high output electric current also increases the uncontrollable security risk of needs.
Summary of the invention
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind The electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced, iron core is combined with the assembly of iron core teeth two parts by magnetic yoke and is formed, with And the electromagnetic agitation roller arrangement that agitating roller shell is compounded to form using permeability magnetic material, non-magnet material, wear-resistant material, can both it increase Effective magnetic field intensity caused by High Magnetic Field Generator, and can reduce shielding action of the agitating roller shell to magnetic field, reach increasing The purpose of strong mixing roller effective magnetic field action intensity.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of electromagnetic agitation roller arrangement that can enhance effective magnetic field intensity mainly includes coil, iron core magnetic yoke and agitating roller Shell composition, coil, which is wrapped in iron core magnetic yoke, forms field generator for magnetic, and agitating roller shell surrounds field generator for magnetic, by Iron core magnetic yoke combines to form agitating roller iron core with iron core teeth, be wrapped in iron core magnetic yoke coil be located at two neighboring iron core teeth it Between, form iron core teeth-coil-core tooth pattern coil windings;Agitating roller shell is combined and is formed by internal layer and outer layer two parts, The inner portion of agitating roller shell is overlapped mutually along core length direction by permeability magnetic material and non-magnet material and is formed, and formation is led Magnetic material-integrated the composite construction of non-magnet material-permeability magnetic material, the outer section of agitating roller shell is by wear-resistant material group At clad.
As currently preferred technical solution, on core length direction, the permeability magnetic material institute of agitating roller shell is in place It sets and is corresponded with iron core teeth position, and the width of permeability magnetic material is not less than the width of iron core teeth, makes iron core teeth and position It sets corresponding permeability magnetic material and forms magnetic conduction module group unit, form the weak shielding path in magnetic field.
On core length direction, the width of further preferred permeability magnetic material and the width of iron core teeth are equal.
Above-mentioned iron core magnetic yoke preferably combines to form agitating roller iron core with iron core teeth by fastener assembly, is formed modular It can construct for handling.
It is preferred that the spacing H1 between the outer of above-mentioned iron core teeth and the inner wall of agitating roller shell meets: H1≤100mm.
It is preferred that the shape of iron core teeth is sector structure, and preferably fan angle θ meets: θ≤180 °.
Above-mentioned iron core teeth it is preferably rectangular in shape, square, using ellipsometry axis as the half elliptic on side, triangle or Person is trapezoidal.
As currently preferred technical solution, the outer section of agitating roller shell is by spraying method spray attachment in stirring The outer surface of the inner portion of roller shell forms wear-resistant material surface layer;Or the outer section of agitating roller shell is by wear-resisting material The bed of material carries out integrated assembling by internal layer and outer layer two parts by mechanical connection or solder bond mode, by agitating roller shell.
It is preferred that carrying out assembly combination by bolt or screw fastener, make permeability magnetic material and non-magnet material along iron core Length direction is overlapped mutually the inner portion to form agitating roller shell.
Above-mentioned permeability magnetic material preferably uses at least one of pure iron, silicon steel, permalloy material to be made.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage:
1. the iron core of electromagnetic agitation roller arrangement of the present invention is assembled to form with iron core teeth two parts by fixing piece by magnetic yoke, Iron core teeth can carry out replacement adjustment as needed at any time, can be adapted for different operating environments completely;It is simple with structure, It is easy for installation, the advantages that cost is relatively low;
2. the inboard portion of the agitating roller shell of electromagnetic agitation roller arrangement of the present invention uses permeability magnetic material and non-magnet material It is combined, permeability magnetic material is corresponding with iron core teeth, can highly desirable weaken " shielding " of the agitating roller shell to electromagnetic field Effect;
3. electromagnetic agitation roller arrangement of the present invention is on the basis of enhancing effective magnetic field intensity, the wear-resistant material in outside again can be with Certain support strength is played to the slab of secondary cooling zone.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the electromagnetic agitation roller arrangement that the embodiment of the present invention one can enhance effective magnetic field intensity.
Fig. 2 is the sectional view along the line A-A in Fig. 1.
Specific embodiment
Above scheme is described further below in conjunction with specific implementation example, the preferred embodiment of the present invention is described in detail such as Under:
Embodiment one
In the present embodiment, referring to Fig. 1 and Fig. 2, a kind of electromagnetic agitation roller arrangement that can enhance effective magnetic field intensity, mainly It is formed including coil 3, iron core magnetic yoke 1 and agitating roller shell, coil 3 is wrapped in iron core magnetic yoke 1 and forms field generator for magnetic, stirs Mix roller shell and surround field generator for magnetic, combined by iron core magnetic yoke 1 with iron core teeth 2 and form agitating roller iron core, with Gramer around The mode of group is wrapped in 1 coil 3 of iron core magnetic yoke between two neighboring iron core teeth 2, forms iron core teeth-coil-core tooth The coil windings of form;Agitating roller shell is combined and is formed by internal layer and outer layer two parts, and the inner portion of agitating roller shell is by leading Magnetic material 5 is overlapped mutually to be formed along core length direction with non-magnet material 6, forms permeability magnetic material-non-magnet material-magnetic conduction The outer section of the integrated composite construction of material, agitating roller shell forms clad by wear-resistant material 4.
In the present embodiment, referring to Fig. 1 and Fig. 2, on core length direction, where the permeability magnetic material 5 of agitating roller shell Position and 2 position of iron core teeth correspond;And on core length direction, width and the iron core teeth 2 of permeability magnetic material 5 Width is equal, so that the permeability magnetic material 5 corresponding with position of iron core teeth 2 is formed magnetic conduction module group unit, forms the weak shielding path in magnetic field.
In the present embodiment, referring to Fig. 1 and Fig. 2, the spacing H1 between the outer of iron core teeth 2 and the inner wall of agitating roller shell =100mm.The shape of iron core teeth 2 is sector structure, fan angle θ=120 °.
In the present embodiment, referring to Fig. 1 and Fig. 2, assembly combination is carried out by stud fastener, make permeability magnetic material 5 with Non-magnet material 6 is overlapped mutually the inner portion to form agitating roller shell along core length direction.Permeability magnetic material 5 uses silicon steel It is made.The outer section of agitating roller shell is by spraying method spray attachment in the outer surface of the inner portion of agitating roller shell, shape At 4 surface layer of wear-resistant material.
In the present embodiment, referring to Fig. 1 and Fig. 2, it is combined by iron core magnetic yoke 1 with iron core teeth 2 and forms agitating roller iron core, wound In 1 coil 3 of iron core magnetic yoke between two neighboring iron core teeth 2, formed iron core teeth-coil-core tooth pattern coil around Group;A series of iron core teeths 2 and iron core magnetic yoke 1 form a series of grooves of iron core, and coil 3 is wrapped in 1 coil 3 of iron core magnetic yoke Between two neighboring iron core teeth 2, make outer not higher than iron core teeth 2 along radial 3 winding thickness of coil of iron core magnetic yoke 1 Edge, i.e. 3 canoe of hold-in winding use non-tankful canoe.Iron core teeth 2 is set to form the escapement of adjacent winding.Magnetic conduction Material 5 and non-magnet material 6 are overlapped mutually the inner portion to form agitating roller shell along core length direction, make along iron core The inner portion surface extending direction of length direction, agitating roller shell is parallel with 1 length extending direction of iron core magnetic yoke.The present embodiment Agitating roller iron core is composed of iron core magnetic yoke 1 and the assembly of 2 two parts of iron core teeth, and agitating roller shell is by wear-resistant material 4, leads Magnetic material 5, non-magnet material 6 are combined.Agitating roller iron core is to pass through fastener by iron core magnetic yoke 1 and 2 two parts of iron core teeth Assembly combination is formed, and magnetic yoke 2 is all made of silicon steel sheet with 1 two parts of iron core teeth and is superimposed to be formed, and can effectively avoid the production of vortex It is raw, prevent iron core temperature excessively high.The presence of iron core teeth highly effective can avoid electromagnetic field from excessively dispersing.Agitating roller shell is adopted It is made with composite material.The inner portion of agitating roller shell uses permeability magnetic material 5 and non-magnetic material with same thickness Material 6 is overlapped mutually to be formed along core length direction, and the position where permeability magnetic material 5 need to be corresponded with iron core teeth 2, and two Person's width having the same;Permeability magnetic material 5 is corresponded to each other with iron core teeth 2, can effectively weaken agitating roller shell to electromagnetism The screen effect of field, and then can relatively enhance the effective magnetic field intensity of stirring roller arrangement.The inner portion of agitating roller shell It is overlapped mutually to be formed along core length direction with non-magnet material 6 using permeability magnetic material 5, outer section then uses wear-resistant material 4 are coated.The wear-resistant material 4 of agitating roller shell outer section can be invested wear-resistant material powder spray using spraying technology The surface of inboard portion is formed, which need to have certain support strength on the basis of wear-resisting, two cold for supporting The slab in area.The effective magnetic field intensity of agitating roller not only can be enhanced in the enhanced slab electromagnetic stirring roller of the present embodiment effective magnetic field To generate the mixing effect become apparent, and the output of power supply can be reduced under the premise of guaranteeing effective magnetic field intensity Electric current cuts down economic cost.Simultaneously because iron core is structure very simple made of Automatic manual transmission, the maintenance and replacement in later period Also very convenient.
Embodiment two
The present embodiment is basically the same as the first embodiment, and is particular in that:
In the present embodiment, on core length direction, the width of permeability magnetic material 5 is 1.2 times of the width of iron core teeth 2, So that the permeability magnetic material 5 of agitating roller shell inboard portion is slightly larger than the width of iron core teeth 5, also makes iron core teeth 2 is corresponding with position to lead Magnetic material 5 forms magnetic conduction module group unit, forms the weak shielding path in magnetic field.The shape of iron core teeth 2 is sector structure, fan angle θ It=180 °, is formed semicircle.The presence of iron core teeth highly effective can avoid electromagnetic field from excessively dispersing.
Embodiment three
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, iron core magnetic yoke 1 combines to form agitating roller iron core with iron core teeth 2 by fastener assembly, is formed It is modular can construct for handling.Agitating roller iron core is composed of magnetic yoke and the assembly of iron core two parts, iron core magnetic yoke 1 and iron core 2 two parts of tooth all can be dismantled and be replaced at any time, improve utilization rate of equipment and installations and component carries out being cyclically updated reparation, can more effectively prolong Long electromagnetic stirring roller service using life.It is simple with structure, easy for installation, the advantages that cost is relatively low.
Example IV
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the shape of iron core teeth 2 is rectangle, square, using ellipsometry axis as the half elliptic on side, three It is angular or trapezoidal.Iron core teeth 2 can also make 5 shape of permeability magnetic material corresponding with position of iron core teeth 2 using the other shapes of non-sector At magnetic conduction module group unit, the weak shielding path in magnetic field is formed.Rectangle, square, using ellipsometry axis as the half elliptic on side, triangle The presence of shape or trapezoidal iron core teeth also highly effective can avoid electromagnetic field from excessively dispersing.
Embodiment five
The present embodiment is substantially the same as in the previous example, and is particular in that:
In the present embodiment, the outer section of agitating roller shell is by 4 layers of wear-resistant material by mechanical connection or welding knot Agitating roller shell is carried out integrated assembling by internal layer and outer layer two parts by conjunction mode.
The above embodiment of the present invention enhances the electromagnetic agitation roller arrangement of effective magnetic field intensity, and agitating roller iron core is by iron core magnetic Yoke 1 combines formation by fastener assembly with 2 two parts of iron core teeth, can magnetic field caused by agitating roller more be concentrated. Agitating roller shell is formed in conjunction with outer section by inner portion;Inner portion be by permeability magnetic material 5 and non-magnet material 6 along Core length direction is overlapped mutually to be formed, the position of 5 position of permeability magnetic material and iron core teeth 2 on core length direction one by one Corresponding, permeability magnetic material 5 is connected with non-magnet material 6;The outer section of agitating roller shell uses wear-resistant material 4;Reduce stirring Shielding of the roller shell to electromagnetic field.Compared with convention stir roller, this agitating roller of the above embodiment of the present invention can not only guarantee Basic wear-resisting and support strength requirement, and stronger effective magnetic field can be generated under identical electric power outputting current, it mentions The high stirring efficiency of agitating roller, and then possibility is provided for improvement casting blank solidification tissue.
Combination attached drawing of the embodiment of the present invention is illustrated above, but the present invention is not limited to the above embodiments, it can be with The purpose of innovation and creation according to the present invention makes a variety of variations, under the Spirit Essence and principle of all technical solutions according to the present invention Change, modification, substitution, combination or the simplification made, should be equivalent substitute mode, as long as meeting goal of the invention of the invention, The technical principle and inventive concept that the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced without departing from the present invention, belong to Protection scope of the present invention.

Claims (10)

1. a kind of electromagnetic agitation roller arrangement that can enhance effective magnetic field intensity mainly includes coil (3), iron core magnetic yoke (1) and is stirred Roller shell composition is mixed, coil (3), which is wrapped on iron core magnetic yoke (1), forms field generator for magnetic, and agitating roller shell surrounds magnetic field Generating device, it is characterised in that:
It is combined by iron core magnetic yoke (1) with iron core teeth (2) and forms agitating roller iron core, be wrapped in iron core magnetic yoke (1) coil (3) and be located at Between two neighboring iron core teeth (2), iron core teeth-coil-core tooth pattern coil windings are formed;
Agitating roller shell is combined and is formed by internal layer and outer layer two parts, the inner portion of agitating roller shell by permeability magnetic material (5) with Non-magnet material (6) is overlapped mutually to be formed along core length direction, forms permeability magnetic material-non-magnet material-permeability magnetic material The outer section of integrated composite construction, agitating roller shell forms clad by wear-resistant material (4).
2. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: long in iron core It spends on direction, permeability magnetic material (5) position and iron core teeth (2) position of agitating roller shell correspond, and magnetic conduction The width of material (5) is not less than the width of iron core teeth (2), and iron core teeth (2) permeability magnetic material (5) corresponding with position is made to form magnetic conduction Module group unit forms the weak shielding path in magnetic field.
3. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 2, it is characterised in that: long in iron core It spends on direction, the width of permeability magnetic material (5) is equal with the width of iron core teeth (2).
4. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: iron core magnetic yoke (1) it combines to form agitating roller iron core by fastener assembly with iron core teeth (2), formation is modular can construct for handling.
5. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: iron core teeth (2) the spacing H1 between the inner wall of outer and agitating roller shell needs to meet: H1≤100mm.
6. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: iron core teeth (2) shape is sector structure, and fan angle θ meets: θ≤180 °.
7. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: iron core teeth (2) shape is rectangle, square, using ellipsometry axis as the half elliptic on side, triangle or trapezoidal.
8. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: outside agitating roller The outer section of shell is to be formed wear-resistant material (4) by spraying method spray attachment in the outer surface of the inner portion of agitating roller shell Surface layer;Or the outer section of agitating roller shell is will to stir wear-resistant material (4) layer by mechanical connection or solder bond mode It mixes roller shell and carries out integrated assembling by internal layer and outer layer two parts.
9. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: pass through bolt Or screw fastener carries out assembly combination, keeps permeability magnetic material (5) and non-magnet material (6) mutually folded along core length direction Add to form the inner portion of agitating roller shell.
10. the electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced according to claim 1, it is characterised in that: magnetic conduction material Material (5) is made of at least one of pure iron, silicon steel, permalloy material.
CN201810984788.2A 2018-08-28 2018-08-28 The electromagnetic agitation roller arrangement of effective magnetic field intensity can be enhanced Pending CN109128068A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE430572B (en) * 1977-09-23 1983-11-28 Mannesmann Ag Apparatus for providing an electromagnetic rotational field in the support roller web of an extruder
DE3322891A1 (en) * 1983-06-23 1985-01-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Apparatus for the electrodynamic stirring of the liquid pool of a metal slab
CN201308824Y (en) * 2008-11-28 2009-09-16 湖南岳磁高新科技有限公司 Double-magnetic pole inserted travelling wave magnetic field electromagnetic stirrer
CN201308825Y (en) * 2008-11-28 2009-09-16 湖南岳磁高新科技有限公司 Roller rear type single-side traveling wave magnetic field electromagnetic stirrer
CN201376076Y (en) * 2009-04-01 2010-01-06 岳阳鸿升电磁科技有限公司 Roll-type electromagnetic stirrer for slab continuous casting
CN201978701U (en) * 2010-12-31 2011-09-21 包钢集团电气有限公司 Electromagnetic stirrer
CN105014030A (en) * 2015-07-08 2015-11-04 上海大学 Continuous casting electromagnetic stirring crystallizer with composite backboard
CN105964964A (en) * 2015-03-11 2016-09-28 斯凯孚公司 Continuous caster roll for a continuous casting machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE430572B (en) * 1977-09-23 1983-11-28 Mannesmann Ag Apparatus for providing an electromagnetic rotational field in the support roller web of an extruder
DE3322891A1 (en) * 1983-06-23 1985-01-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Apparatus for the electrodynamic stirring of the liquid pool of a metal slab
CN201308824Y (en) * 2008-11-28 2009-09-16 湖南岳磁高新科技有限公司 Double-magnetic pole inserted travelling wave magnetic field electromagnetic stirrer
CN201308825Y (en) * 2008-11-28 2009-09-16 湖南岳磁高新科技有限公司 Roller rear type single-side traveling wave magnetic field electromagnetic stirrer
CN201376076Y (en) * 2009-04-01 2010-01-06 岳阳鸿升电磁科技有限公司 Roll-type electromagnetic stirrer for slab continuous casting
CN201978701U (en) * 2010-12-31 2011-09-21 包钢集团电气有限公司 Electromagnetic stirrer
CN105964964A (en) * 2015-03-11 2016-09-28 斯凯孚公司 Continuous caster roll for a continuous casting machine
CN105014030A (en) * 2015-07-08 2015-11-04 上海大学 Continuous casting electromagnetic stirring crystallizer with composite backboard

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Application publication date: 20190104