CN1008984B - Electromagnetic stirring device for continuous steel casting - Google Patents
Electromagnetic stirring device for continuous steel castingInfo
- Publication number
- CN1008984B CN1008984B CN 87104014 CN87104014A CN1008984B CN 1008984 B CN1008984 B CN 1008984B CN 87104014 CN87104014 CN 87104014 CN 87104014 A CN87104014 A CN 87104014A CN 1008984 B CN1008984 B CN 1008984B
- Authority
- CN
- China
- Prior art keywords
- magnetic
- electromagnetic
- field
- independent
- inductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 23
- 239000010959 steel Substances 0.000 title claims abstract description 23
- 238000003756 stirring Methods 0.000 title claims abstract description 18
- 238000005266 casting Methods 0.000 title claims description 3
- 238000009749 continuous casting Methods 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000005284 excitation Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
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- Continuous Casting (AREA)
Abstract
Continuous casting steel machine crystallizer electromagnetic mixing apparatus of the present invention, can produce vertical shifting magnetic field simultaneously and horizontally rotate magnetic field, the resultant field of the two formation, make molten steel produce the stirring movement of spiral rising (or decline), because of impurity, gas separate come-up with molten steel, and, be beneficial to the removing of impurity, thereby improved billet surface and inherent quality effectively to the gathering of liquid level center.Because apparatus of the present invention are simple in structure, volume is little, is convenient to install and use in crystallizer.
Description
The invention belongs to liquid metal electromagnetic agitating technology in the continuous casting steel machine.
On conticaster, it is to begin one's study the sixties that the molten steel that is solidifying is carried out electromagnetic agitation, a new technology that grows up the seventies.Electromagnetic agitating technology to the common employing of liquid metal in the continuous casting steel machine crystallizer has two kinds at present.A kind of is to utilize rotating excitation field, molten steel is produced rotatablely move and is fully stirred, to improve billet quality.But rotatablely moving of molten steel must make non-metallic inclusion assemble to the center, though cc billet surface quality improves, the center field trash might occur and increase and reduce quality, makes stocking produce defective.Another kind is a function composite by electromagnetic stirring of utilizing the vertical travelling-magnetic-field that moves, make molten steel in mold produce convection current, wash away the freezing interface, quicken field trash and gas come-up, and be dispersed in crystallizer liquid metal liquid level, better with the steel billet center mass that this method obtains, but surface quality is not as the former.For this reason, many researchers of this area are devoted to study the magnetic stirrer that uses in the conticaster that has above-mentioned two kinds of method advantages concurrently in recent years.In this respect, the work that the France expert carries out is more, what French Patent (FRP) (patent No. 2426516) was invented is a kind of combined type helical magnetic field agitator, it is by one group of travelling-magnetic-field inductor and one group of rotating excitation field inductor, divide and inside and outsidely two-layerly to assemble, but volume is big, can not be used for stirring in the crystallizer, can only use in two cold-zones.
It is little to the purpose of this invention is to provide a kind of volume, simple in structure, is used for the electromagnetic mixing apparatus in the composite screw magnetic field in the continuous casting steel machine crystallizer.
Continuous casting steel machine crystallizer electromagnetic mixing apparatus provided by the invention, be by becoming even-even, electromagnetic parameter identical, be arranged above and below and adorn the linear electrode formula inductor that independent two-phase low frequency travelling-magnetic-field inductor forms by several convex magnetic poles and line bag upright and constitute with geometric parameter.Each is upright adorns independent two-phase travelling-magnetic-field inductor and produces vertical shifting magnetic field, each stands and adorns independent travelling-magnetic-field inductor, the respective poles of same level height can produce unidirectional rotating excitation field again, the resultant field of Xing Chenging thus, make the molten steel of solidification front obtain the The stirring action of magnetic field that spiral rises or descends, its principle as shown in Figure 1.By adjusting upright yoke distance, core section, the line bag number of turn of adorning independent two-phase travelling-magnetic-field differentiated levels place, can obtain to stir the optimum ratio of rising (or decline) power and revolving force.
The advantage of this method is:
1. the present invention only adopts one group of inductor can produce vertical shifting magnetic field and horizontally rotates moving magnetic field, the resultant field of the two formation makes molten steel produce the rise stirring movement of (or decline) of spiral, so impurity, gas separate come-up with molten steel, and to the gathering of liquid level center, as shown in Figure 2.Owing to help the removing of impurity, so improved slab surface quality and internal soundness effectively.
2. because the present invention will change and have the independent travelling-magnetic-field and the rotating excitation field of technology to integrally combine, volume is little and simple in structure, so be convenient to install and use in crystallizer.
3. electromagnetic mixing apparatus of the present invention can obtain the multiple line helical stir by changing the upright mode of connection of adorning independent two-phase row ripple inductor, and single-wire helix stirs, multiple agitating functions such as single rotation stirring or single vertical direction stirring.
4. for billet continuous casting, adopt the present invention's electromagnetic mixing apparatus, because of its magnetopause apart from little, and can more reasonably be distributed in around the crystallizer, thereby obtain bigger mixing power than the three-phase electromagnetic agitating device.
5. this helical magnetic field agitating device has capable wave-wave magnetic field and rotating excitation field function concurrently, and mixing power is big, so also be applicable to two cold-zones, two cold-zone ends especially.
Fig. 1 multiple line helical magnetic field stirring theory.A, B, C, D adorn independent travelling-magnetic-field inductor numbering for standing among Fig. 1; A
1, A
2, A
3, A
4D
1, D
2, D
3, D
4Be the magnetic pole numbering; U, V, (U), (V) are the positive and negative wiring of two-phase power supply; Hha ... Hha is a travelling-magnetic-field; Hn
1Hn
4Be rotating excitation field.
Fig. 2, helical magnetic field function composite by electromagnetic stirring schematic diagram, (1) stirring movement direction among the figure, (2) impurity detaching direction, (3) impurity revolve nest at the liquid level center assembles (4) strand, (5) molten steel, (6) inductor.
Fig. 3, crystallizer electromagnetic agitation installation diagram, (7) inductor iron core among the figure, (8) inductor line bag, (9) crystallizer copper sleeve, (10) austenite stainless steel bushing, (11) shell.
Fig. 4, multiple line helical magnetic field electromagnetic agitation magnetic pole expanded view.
Hnh is the resultant magnetic field
Fig. 5, single-screw stirs the magnetic pole expanded view.
Fig. 6, straight line stirs the magnetic pole expanded view.
Fig. 7, the magnetic pole expanded view is stirred in rotation.
Adorn independent two-phase low frequency travelling-magnetic-field inductor by four electromagnetic parameters, geometric parameter identical be arranged above and below four convex magnetic poles and line bag are upright, being mutually 90 ° places in the conticaster crystallizer, its installation diagram as shown in Figure 3, the mode of connection constitutes parameter multiple line helical magnetic field electromagnetic mixing apparatus such as of the present invention as shown in Figure 4.Be applicable to square billet, round billet continuous casting.
Identical by four electromagnetic parameters, geometric parameter, but the sectional area of each top pole, coil turn, yoke distance for its down 1.25 times of each magnetic pole upright adorn independent two-phase low frequency travelling-magnetic-field inductor, being mutually 90 ° places in the conticaster crystallizer, the mode of connection constitutes variable element multiple line helical magnetic field electromagnetic mixing apparatus of the present invention with embodiment 1.Be applicable to high-quality billet, round billet continuous casting.
With the structure of embodiment 1,, constitute single-wire helix of the present invention magnetic field electromagnetic mixing apparatus according to the staged mode of connection shown in Figure 5.Be applicable to square billet, round billet continuous casting.
Embodiment 4
With the structure of embodiment 1,, constitute the single travelling-magnetic-field electromagnetic mixing apparatus of the present invention according to the mode of connection shown in Figure 6.Can be used for half boiling steel conticaster crystallizer square billet, round billet continuous casting.
Embodiment 5
According to the structure of embodiment 1,, constitute the single rotating excitation field electromagnetic mixing apparatus of the present invention according to the mode of connection shown in Figure 7.Be applicable to the conticaster crystallizer billet continuous casting.
Claims (4)
1, a kind of electromagnetic mixing apparatus that is used for the composite screw magnetic field of continuous casting steel machine, it is characterized in that by become even-even, electromagnetic parameter identical with geometric parameter, be arranged above and below and adorn the linear electrode formula inductor that independent two-phase low frequency travelling-magnetic-field inductor forms by several convex magnetic poles and line bag upright and constitute.
2, continuous casting steel machine crystallizer electromagnetic mixing apparatus according to claim 1 is characterized in that the independent two-phase low frequency travelling-magnetic-field inductor of described even-even, and preferred number is 2 pairs.
3, according to claim 1,2 described continuous casting steel machine crystallizer electromagnetic mixing apparatus, it is characterized in that described independent two-phase low frequency travelling-magnetic-field inductor, the preferred ratio of parameters such as the core section of its top convex magnetic pole and all the other each convex magnetic poles, the line bag number of turn, yoke distance is 1～1.5: 1.
4, electromagnetic stirring device for continuous steel casting according to claim 1 is characterized in that describedly upright adorning independent two-phase travelling-magnetic-field inductor, and electromagnetic parameter, the geometric parameter of each respective male magnetic pole of same level height are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104014 CN1008984B (en) | 1987-06-01 | 1987-06-01 | Electromagnetic stirring device for continuous steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104014 CN1008984B (en) | 1987-06-01 | 1987-06-01 | Electromagnetic stirring device for continuous steel casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87104014A CN87104014A (en) | 1988-12-14 |
| CN1008984B true CN1008984B (en) | 1990-08-01 |
Family
ID=4814686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87104014 Expired CN1008984B (en) | 1987-06-01 | 1987-06-01 | Electromagnetic stirring device for continuous steel casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008984B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2578691C (en) * | 2006-07-20 | 2010-10-26 | Kenzo Takahashi | Melting furnace with agitator and agitator for melting furnace |
| CN100424205C (en) * | 2006-08-16 | 2008-10-08 | 北京交通大学 | Method and device for stirring aluminum-based alloy liquid |
| US9352386B2 (en) | 2010-08-05 | 2016-05-31 | Danieli & C. Officine Meccaniche S.P.A. | Process and apparatus for controlling the flows of liquid metal in a crystallizer for the continuous casting of thin flat slabs |
| IT1401311B1 (en) | 2010-08-05 | 2013-07-18 | Danieli Off Mecc | PROCESS AND APPARATUS FOR THE CONTROL OF LIQUID METAL FLOWS IN A CRYSTALLIZER FOR CONTINUOUS THIN BRAMME BREAKS |
| CN103182495B (en) * | 2011-12-29 | 2015-04-22 | 宝山钢铁股份有限公司 | Multifunctional electromagnetic stirrer |
| JP5815763B2 (en) | 2014-01-24 | 2015-11-17 | 高橋 謙三 | Permanent magnet type molten metal stirring device, melting furnace having the same, and continuous casting device |
| JP6033807B2 (en) * | 2014-03-27 | 2016-11-30 | 高橋 謙三 | Metal melt stirring device and metal melt transfer device |
| CN105499142B (en) * | 2016-01-27 | 2017-06-20 | 东北大学 | A kind of resultant field spiral chute metal bead piece-rate system and method |
| CN107008873B (en) * | 2017-04-11 | 2020-01-17 | 上海大学 | Preparation method and device for multi-mode electromagnetic field homogenization of metal continuous casting slab |
| CN107008198B (en) * | 2017-05-05 | 2019-10-18 | 深圳市国赛生物技术有限公司 | A kind of reaction solution blending system |
| CN107116191B (en) * | 2017-05-15 | 2020-09-29 | 东北大学 | Combined type spiral electromagnetic stirrer |
| CN109158563B (en) * | 2018-10-31 | 2019-10-01 | 燕山大学 | Continuous cast mold magnetic stirrer with resultant field |
| CN111468704A (en) * | 2020-05-29 | 2020-07-31 | 鞍钢股份有限公司 | A method for improving the internal quality of large steel ingots |
| CN115194107B (en) * | 2022-07-13 | 2023-05-16 | 沈阳工程学院 | Multi-stage independent adjustable composite magnetic field device and method for controlling metal liquid flow |
-
1987
- 1987-06-01 CN CN 87104014 patent/CN1008984B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87104014A (en) | 1988-12-14 |
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