JPH01181954A - Electromagnetic agitating device - Google Patents
Electromagnetic agitating deviceInfo
- Publication number
- JPH01181954A JPH01181954A JP448788A JP448788A JPH01181954A JP H01181954 A JPH01181954 A JP H01181954A JP 448788 A JP448788 A JP 448788A JP 448788 A JP448788 A JP 448788A JP H01181954 A JPH01181954 A JP H01181954A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic
- air
- mold
- molten steel
- electromagnetic device
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 239000002826 coolant Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 11
- 239000002887 superconductor Substances 0.000 claims description 7
- 229910052788 barium Inorganic materials 0.000 abstract description 2
- 229910052712 strontium Inorganic materials 0.000 abstract description 2
- 229910052727 yttrium Inorganic materials 0.000 abstract description 2
- 238000013019 agitation Methods 0.000 abstract 2
- 230000004907 flux Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は電磁攪拌装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an electromagnetic stirring device.
（従来の技術）
周知のように電磁攪拌装置は、溶鋼が流れる鋳型の左右
に、回転磁界を発生する電磁装置を設置することによっ
て構成されている。第３図は従来のこの種装置を示し、
１は銅、ステンレスなどからなる水冷式の鋳型、２は鋳
型１の側面に配置されである電磁装置である。第３図は
電磁攪拌装置の右半分のみを示している。溶鋼は鋳型１
内を紙面と直交する方向に沿って流通する。電磁装置２
は鋳型１の左右両側面に設置されている（第１図参照。(Prior Art) As is well known, an electromagnetic stirring device is constructed by installing electromagnetic devices that generate a rotating magnetic field on the left and right sides of a mold through which molten steel flows. FIG. 3 shows a conventional device of this type,
1 is a water-cooled mold made of copper, stainless steel, etc., and 2 is an electromagnetic device placed on the side of the mold 1. FIG. 3 shows only the right half of the electromagnetic stirring device. Molten steel is mold 1
The inside of the paper flows in a direction perpendicular to the plane of the paper. Electromagnetic device 2
are installed on both the left and right sides of the mold 1 (see Figure 1).
）。).
図に示す電磁装置２は、コ字状の鉄心３の各脚部にコイ
ル４，５を、また雨脚部にまたがるようにコイル６を巻
回し、各コイルに三相電流を供給するようにしである。The electromagnetic device 2 shown in the figure has coils 4 and 5 wound around each leg of a U-shaped iron core 3, and a coil 6 wound around the legs so as to supply three-phase current to each coil. be.
三相電流を供給すると、溶鋼内部に回転磁界が発生し、
紙面と平行する平面内に電磁力が発生する。この電磁力
によって溶鋼が回転し攪拌される。When three-phase current is supplied, a rotating magnetic field is generated inside the molten steel,
Electromagnetic force is generated in a plane parallel to the paper. This electromagnetic force rotates and stirs the molten steel.
この場合電磁装置２からは図に示すような磁束線７が発
生され、これが溶鋼内に入ることによって電磁攪拌され
るのである。しかしこのような構成によると、図に示す
ように無駄な洩れ磁束がかなり多く発生する。したがっ
て溶鋼に所要の駆動力を与えるためには大きいアンペア
ターンを必要とするようになる。In this case, the electromagnetic device 2 generates magnetic flux lines 7 as shown in the figure, which enter the molten steel and cause electromagnetic stirring. However, with this configuration, a considerable amount of wasteful leakage magnetic flux is generated as shown in the figure. Therefore, a large ampere turn is required to provide the required driving force to the molten steel.
（発明が解決しようとする問題点）
この発明は電磁装置からの洩れ磁束の発生をなくすこと
によって磁束の有効利用を図り、少ないアンペアターン
によって溶鋼に所要の駆動力を与えるようにすることを
目的とする。(Problems to be Solved by the Invention) The purpose of this invention is to effectively utilize magnetic flux by eliminating the generation of leakage magnetic flux from electromagnetic devices, and to provide the required driving force to molten steel with fewer ampere turns. shall be.
（問題点を解決するための手段）
この発明は内部に溶鋼が流通する鋳型の側面に、前記溶
鋼を攪拌させる駆動力を発生する回転磁界を発生させる
電磁装置を備えた電磁攪拌装置において、前記電磁装置
を、酸化物超電導体からなる電線を巻回した空心コイル
によって構成し、前記電磁装置の前記鋳型の側面に向い
合う面を除く他の面を、酸化物超電導体からなる電磁シ
ールドによって包囲し、前記電磁装置および電磁シール
ドを冷却媒体とともにタンクに収納したことを特徴とす
る。(Means for Solving the Problems) The present invention provides an electromagnetic stirrer equipped with an electromagnetic device that generates a rotating magnetic field that generates a driving force for stirring the molten steel on the side surface of a mold through which molten steel flows. The electromagnetic device is constituted by an air-core coil wound with an electric wire made of an oxide superconductor, and other surfaces of the electromagnetic device other than the surface facing the side surface of the mold are surrounded by an electromagnetic shield made of the oxide superconductor. The electromagnetic device and the electromagnetic shield are housed in a tank together with a cooling medium.
（実施例）
この発明の実施例を第１図および一２図によって説明す
る。なお第３図と同じ符号を付した部分は、同一または
対応する部分を示す。この発明による電磁装置２は、空
心コイル１４〜１６から構成されている。(Example) An example of the present invention will be described with reference to FIGS. 1 and 12. Note that parts given the same reference numerals as in FIG. 3 indicate the same or corresponding parts. The electromagnetic device 2 according to the invention is comprised of air-core coils 14-16.
空心コイル１４，１５は上下方向に並設され、空心コイ
ル１６は両空心コイル１４，１５を取り巻くように配置
される。そして各空心コイルは酸化物超電導体からなる
電線を巻回することによって構成されている。The air-core coils 14 and 15 are arranged in parallel in the vertical direction, and the air-core coil 16 is arranged so as to surround both the air-core coils 14 and 15. Each air-core coil is constructed by winding an electric wire made of an oxide superconductor.
１７は同じく酸化物超電導体からなる電磁シールドで、
これは電磁装置２の、鋳型１の側面に向い合う面を開口
面とし、その他の面すなわち上下面、背面および側面か
ら包囲するようにして配置されである。17 is an electromagnetic shield also made of oxide superconductor,
The electromagnetic device 2 is arranged so that the surface facing the side surface of the mold 1 is an open surface, and is surrounded from the other surfaces, that is, the top, bottom, back, and side surfaces.
なおここに使用する各酸化物超電導体としては、たとえ
ばストロンチウム、バリウムもしくはイツトリウム系元
素と銅の酸化物よりなるセラミックなどが好適である。As each oxide superconductor used here, it is preferable to use, for example, a ceramic made of an oxide of strontium, barium, or yttrium-based elements and copper.
１８は電磁装置２、電磁シールド１７を、冷媒たとえば
液体窒素とともに封入するタンクである。A tank 18 encloses the electromagnetic device 2 and the electromagnetic shield 17 together with a refrigerant such as liquid nitrogen.
タンク１８はたとえば二重壁構造とされてあり、壁内部
を真空とするなり、または適当な断熱材を充填するなど
して断熱構造としである。The tank 18 has, for example, a double-walled structure, and the inside of the wall is evacuated or filled with a suitable heat insulating material to provide insulation.
冬空心コイル１４〜１６に三相電流を流すと、これによ
って発生する回転磁界により、鋳型１内を流通する溶鋼
に攪拌駆動力が発生することは、第３図における構成と
同じである。When a three-phase current is passed through the winter air-core coils 14 to 16, the rotating magnetic field generated thereby generates a stirring driving force in the molten steel flowing in the mold 1, which is the same as the configuration shown in FIG. 3.
しかしこのとき発生する磁束７は第２図に示すように、
電磁シールド１７のマイスナー効果により完全に遮断さ
れるため、第３図に示すような洩れ磁束８なるものは発
生しない。However, the magnetic flux 7 generated at this time is as shown in Figure 2.
Since it is completely blocked by the Meissner effect of the electromagnetic shield 17, leakage magnetic flux 8 as shown in FIG. 3 is not generated.
そしてこの電磁シールド１７の反作用により、磁束は電
磁シールドの開口面である鋳型１側に向かって押し出さ
れるため磁束は有効に利用されるようになる。これによ
って少ないアンペアターンの電磁装置２４こよって、溶
鋼に対し所要の駆動力を与えることができるようになる
のである。Due to this reaction of the electromagnetic shield 17, the magnetic flux is pushed out toward the mold 1 side, which is the opening surface of the electromagnetic shield, so that the magnetic flux can be effectively utilized. This allows the electromagnetic device 24 with fewer ampere turns to provide the required driving force to the molten steel.
なおこの発明では空心コイルを酸化物超電導体の電線に
よって構成しているので、従来構成の電磁装置のように
鉄心を使用する構成に比較して軽量であり、また電力損
失がないためコイル冷却のための構成が簡単となる。ま
た磁束の局部集中がないので、全体として滑らかで良好
な磁束の分布が得られる。In addition, in this invention, the air-core coil is constructed from oxide superconductor wires, so it is lighter than conventional electromagnetic devices that use an iron core, and there is no power loss, which reduces coil cooling. This simplifies the configuration. Furthermore, since there is no local concentration of magnetic flux, a smooth and good magnetic flux distribution can be obtained as a whole.
（発明の効果）
以上詳述したようにこの発明によれば、洩れ磁束の発生
を阻止し、これによって少ないアンペアターンの電磁装
置によって、溶鋼に対し所要の攪拌駆動力を付与するこ
とができるようになるといった効果を奏する。(Effects of the Invention) As detailed above, according to the present invention, it is possible to prevent the generation of leakage magnetic flux, thereby making it possible to apply the required stirring driving force to molten steel using an electromagnetic device with a small number of ampere turns. It has the effect of becoming.
第１図はこの発明の実施例を示し、一部を断面とした正
面図、第２図は同じく磁束分布状態を示す部分正面図、
第３図は従来構成の磁束分布状態を示す部分正面図であ
る。
１・・・鋳型、２・・・電磁装置、１４〜１６・・・空
心コイル、１７・・・電磁シールド、１８・・・タンク
、１′・５ 二パフ・トゝ
−６−Ｉ−：＝、・−FIG. 1 shows an embodiment of the present invention, and is a partially sectional front view, and FIG. 2 is a partial front view showing the state of magnetic flux distribution.
FIG. 3 is a partial front view showing the magnetic flux distribution state of the conventional configuration. DESCRIPTION OF SYMBOLS 1...Mold, 2...Electromagnetic device, 14-16...Air core coil, 17...Electromagnetic shield, 18...Tank, 1'.5 Two-puff toe-6-I-: =,・−
Claims (1)
せる駆動力を発生する回転磁界を発生させる電磁装置を
備えた電磁攪拌装置において、前記電磁装置を、酸化物
超電導体からなる電線を巻回した空心コイルによって構
成し、前記電磁装置の前記鋳型の側面に向い合う面を除
く他の面を、酸化物超電導体からなる電磁シールドによ
って包囲し、前記電磁装置および電磁シールドを冷却媒
体とともにタンクに収納してなる電磁攪拌装置。In an electromagnetic stirring device, the electromagnetic device is equipped with an electromagnetic device that generates a rotating magnetic field that generates a driving force to stir the molten steel on the side surface of a mold through which molten steel flows. The electromagnetic device is composed of a turned air-core coil, and other surfaces of the electromagnetic device other than the surface facing the side surface of the mold are surrounded by an electromagnetic shield made of an oxide superconductor, and the electromagnetic device and the electromagnetic shield are placed in a tank together with a cooling medium. An electromagnetic stirring device housed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP448788A JPH01181954A (en) | 1988-01-11 | 1988-01-11 | Electromagnetic agitating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP448788A JPH01181954A (en) | 1988-01-11 | 1988-01-11 | Electromagnetic agitating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01181954A true JPH01181954A (en) | 1989-07-19 |
Family
ID=11585449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP448788A Pending JPH01181954A (en) | 1988-01-11 | 1988-01-11 | Electromagnetic agitating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01181954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182512A (en) * | 1992-12-17 | 1994-07-05 | Kobe Steel Ltd | Electromagnetic stirrer in mold |
| WO1996002342A1 (en) * | 1994-07-14 | 1996-02-01 | Kawasaki Steel Corporation | Continuous casting method for steel |
-
1988
- 1988-01-11 JP JP448788A patent/JPH01181954A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06182512A (en) * | 1992-12-17 | 1994-07-05 | Kobe Steel Ltd | Electromagnetic stirrer in mold |
| WO1996002342A1 (en) * | 1994-07-14 | 1996-02-01 | Kawasaki Steel Corporation | Continuous casting method for steel |
| EP0721817A1 (en) * | 1994-07-14 | 1996-07-17 | Kawasaki Steel Corporation | Continuous casting method for steel |
| EP0721817A4 (en) * | 1994-07-14 | 1999-02-24 | Kawasaki Steel Co | Continuous casting method for steel |
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