JP2003220323A - Electromagnetic stirring device and electromagnetic stirring method - Google Patents
Electromagnetic stirring device and electromagnetic stirring methodInfo
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- JP2003220323A JP2003220323A JP2002023074A JP2002023074A JP2003220323A JP 2003220323 A JP2003220323 A JP 2003220323A JP 2002023074 A JP2002023074 A JP 2002023074A JP 2002023074 A JP2002023074 A JP 2002023074A JP 2003220323 A JP2003220323 A JP 2003220323A
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- container
- magnetic field
- melt
- field generating
- generating coil
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- Treatment Of Steel In Its Molten State (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Continuous Casting (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、非接触で融体を強
力且つ均一に撹拌することができるとともに、前記融体
の表面の変形を抑制することのできる電磁撹拌装置及び
電磁撹拌方法に関し、特に、（１）合金製造（特に密度
が大きく異なる合金成分を均一に混合する場合）、
（２）金属基粒子分散複合材料製造、（３）金属中介在
物の徹底的分離による超清浄金属素材製造、（４）高精
錬機能による高純度金属素材製造、などの金属製造分野
において使用することのできる電磁撹拌装置及び電磁撹
拌方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic stirrer and an electromagnetic stirrer capable of stirring a melt strongly and uniformly without contact and suppressing deformation of the surface of the melt. In particular, (1) alloy production (especially when alloy components with greatly different densities are uniformly mixed),
Used in the field of metal production such as (2) production of metal-based particle-dispersed composite material, (3) production of ultra-clean metal material by thorough separation of inclusions in metal, (4) production of high-purity metal material by high refining function, etc. The present invention relates to a magnetic stirrer and a magnetic stirrer that can be used.
【０００２】[0002]
【従来の技術】従来の金属融体の非接触攪拌を実施する
装置は、（１）固定磁界式誘導電気炉、（２）回転（円
周）方向移動磁界による電磁攪拌装置、（３）軸方向移
動磁界による電磁攪拌装置、（４）永久磁石の回転によ
る攪拌装置の4つに分類できる。2. Description of the Related Art A conventional apparatus for non-contact stirring of a metal melt is (1) a fixed magnetic field type induction electric furnace, (2) an electromagnetic stirring apparatus by a rotating (circumferential) direction moving magnetic field, and (3) a shaft. It can be classified into four types: an electromagnetic stirrer using a directional magnetic field and (4) a stirrer using a permanent magnet rotating.
【０００３】（１）は金属の加熱・溶解と攪拌を目的と
するが、金属融体の上下に２つの旋回流が形成され、融
体全体に亘る攪拌ができないという問題がある。（２）
は連続鋳造における鋳片未凝固部の電磁攪拌等に利用さ
れているが、容器内の金属融体の攪拌に適用すると、液
面が回転によって大変形するために大きな電力を投入で
きないという欠点がある。また回転運動のみでは融体が
剛体回転に近い挙動をするため、融体の混合が十分では
ない。これらの問題は邪魔板の設置によって回避し得る
が、邪魔板の溶損が新たな問題となる。(1) is intended for heating / melting and stirring the metal, but there is a problem that two swirling flows are formed above and below the metal melt, and stirring cannot be performed over the entire melt. (2)
Is used for electromagnetic stirring of unsolidified slabs in continuous casting, but when it is used for stirring the metal melt in a container, it has the drawback that a large amount of power cannot be applied because the liquid surface is greatly deformed by rotation. is there. In addition, since the melt behaves almost like a rigid body only with the rotational movement, the mixing of the melt is not sufficient. These problems can be avoided by installing a baffle plate, but melting of the baffle plate becomes a new problem.
【０００４】（３）はＡＳＥＡ−ＳＫＦ炉の攪拌方法を
利用したものであるが、精錬材としてのスラグが偏っ
て、湯面が露出するという問題がある。また、規模が大
きいため、汎用性に劣るという問題もある。（４）は、
近年フランスのＶｉｖｅｓ教授によって提案された攪拌
法であり、永久磁石を螺旋状に配置した回転筒を容器周
囲で回転させ、融体の回転方向と軸方向に同時に駆動力
を発生させることによって、液面の変形を抑制しつつ大
きな攪拌を得ることをねらっている。しかしながら、本
発明による実験の結果、融体の回転運動に比して軸方向
の運動には大きな抵抗があり、十分な効果は得られない
ことが判明している。(3) utilizes the stirring method of the ASEA-SKF furnace, but there is a problem that the slag as the refining material is biased and the molten metal surface is exposed. In addition, there is a problem in that it is inferior in versatility because of its large scale. (4) is
This is a stirring method proposed by Professor Vives in France in recent years, in which a rotating cylinder in which permanent magnets are spirally arranged is rotated around a container to generate a driving force simultaneously in the rotational direction and the axial direction of the melt, The aim is to obtain large agitation while suppressing surface deformation. However, as a result of experiments according to the present invention, it has been found that there is a large resistance to the axial movement of the melt as compared with the rotational movement of the melt, and a sufficient effect cannot be obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、融体を非接
触で、その全体に亘って均一かつ強力に撹拌することの
できる、新規な電磁撹拌装置及び電磁撹拌方法を提供す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel electromagnetic stirrer and a magnetic stirrer which can stir a melt uniformly and strongly over the whole without contact. And
【０００６】[0006]
【課題を解決するための手段】上記目的を達成すべく、
本発明は、所定の容器と、前記容器の外周面に沿って設
けられた回転磁界発生コイルと、前記容器の前記外周面
において、前記容器の軸方向に沿って設けられた軸方向
移動磁界発生コイルと、を具えることを特徴とする、電
磁撹拌装置に関する。[Means for Solving the Problems] In order to achieve the above object,
The present invention relates to a predetermined container, a rotating magnetic field generating coil provided along the outer peripheral surface of the container, and an axial moving magnetic field generation provided along the axial direction of the container on the outer peripheral surface of the container. A magnetic stirrer, comprising: a coil.
【０００７】また、本発明は、所定の容器内に所定の融
体を容れる工程と、前記容器の外周面に沿って設けられ
た回転磁界発生コイルによって、前記融体に回転運動を
生ぜしめる工程と、前記容器の前記外周面において、前
記容器の軸方向に沿って設けられた軸方向移動磁界発生
コイルによって、前記融体に軸方向運動を生ぜしめる工
程と、を含むことを特徴とする、電磁撹拌方法に関す
る。Further, according to the present invention, a step of containing a predetermined melt in a predetermined container and a step of causing a rotational motion in the melt by a rotating magnetic field generating coil provided along the outer peripheral surface of the container. And, in the outer peripheral surface of the container, a step of causing an axial motion in the melt by an axially-moving magnetic field generating coil provided along the axial direction of the container, It relates to an electromagnetic stirring method.
【０００８】本発明の磁気撹拌装置によれば、融体を容
れるべき容器の外周面に沿って、回転磁界発生コイルを
設けるとともに、前記容器の外周面において、前記容器
の軸方向に沿って設けられた軸方向移動磁界発生コイル
を設けている。したがって、前記容器内に容れられた前
記融体には、本発明の電磁撹拌方法に基づき、前記回転
磁界発生コイルによって回転運動が生ぜしめられるとと
もに、前記軸方向移動磁界発生コイルによって、軸方向
運動が生ぜしめられる。この結果、前記融体中には、前
記回転運動と前記軸方向運動とが重畳した強力な流速運
動が生じ、前記融体は強力かつ均一に撹拌される。According to the magnetic stirrer of the present invention, the rotating magnetic field generating coil is provided along the outer peripheral surface of the container in which the melt is to be contained, and is provided along the axial direction of the container on the outer peripheral surface of the container. An axial moving magnetic field generating coil is provided. Therefore, based on the electromagnetic stirring method of the present invention, a rotational movement is generated in the melt contained in the container by the rotating magnetic field generating coil, and an axial movement is generated by the axial moving magnetic field generating coil. Is generated. As a result, a strong flow velocity motion in which the rotational motion and the axial motion are superposed occurs in the melt, and the melt is strongly and uniformly stirred.
【０００９】また、上述したような回転運動と軸方向運
動とが重畳した流速運動が生じた状態においては、容器
の外周部において融体に対して下降流が生じ、前記容器
の中央部において前記融体に対して上昇流が生じる。こ
の結果、前記融体の液面を平坦に保持することができ、
前記回転磁界発生コイル及び前記軸方向移動磁界発生コ
イルに対して大電流を投入して、前記融体に対して大き
な流速運動を生ぜしめることができる。また、前記融体
が前記容から溢れ出すのを防止することもできる。Further, in the state where the flow velocity motion in which the rotational motion and the axial motion are superposed as described above is generated, a downward flow is generated with respect to the melt in the outer peripheral portion of the container, and the above-mentioned flow is generated in the central portion of the container. An upflow occurs for the melt. As a result, the liquid surface of the melt can be held flat,
A large current can be applied to the rotating magnetic field generating coil and the axial moving magnetic field generating coil to cause a large flow velocity motion with respect to the melt. It is also possible to prevent the melt from overflowing the volume.
【００１０】なお、本発明の好ましい態様においては、
前記回転磁界発生コイル及び前記軸方向移動磁界発生コ
イルを独立に制御する。これによって、前記融体に対し
て回転運動及び軸方向運動を独立に制御して印加するこ
とができ、前記融体の撹拌の程度を自由に設定すること
ができる。したがって、前記容器の軸方向におけるリニ
ア撹拌から回転撹拌まで、撹拌モードを自由に変化させ
ることができる。さらに、このような独自の制御によれ
ば、前記融体の、前記容器内の外周部及び中央部におい
て下降流及び上昇流を簡易に生成させることができ、前
記融体の液面を平坦に維持することができる。In a preferred embodiment of the present invention,
The rotating magnetic field generating coil and the axial magnetic field generating coil are independently controlled. Thereby, the rotational movement and the axial movement can be independently controlled and applied to the melt, and the degree of stirring of the melt can be freely set. Therefore, the stirring mode can be freely changed from linear stirring to rotary stirring in the axial direction of the container. Further, according to such a unique control, the downflow and the upflow of the melt can be easily generated in the outer peripheral portion and the central portion in the container, and the liquid surface of the melt can be flattened. Can be maintained.
【００１１】また、前記回転磁界発生コイル及び前記軸
方向移動磁界発生コイルは、前記容器の前記外周面にお
いて、前記容器内に容れられた融体を覆うようにして設
けることが好ましい。これにより、前記融体の全体に亘
って、より強い流速運動を生ぜしめることができ、前記
融体の全体をより均一かつ強力に撹拌することができ
る。Further, it is preferable that the rotating magnetic field generating coil and the axial direction moving magnetic field generating coil are provided on the outer peripheral surface of the container so as to cover the melt contained in the container. Thereby, a stronger flow velocity motion can be generated over the entire melt, and the entire melt can be stirred more uniformly and strongly.
【００１２】本発明は、主として上述したような金属製
造分野において用いることができる。特に、融体中に大
きな速度勾配を形成することができるため、前記融体中
に介在物粒子の凝集及び肥大化を促進することができ
る。The present invention can be used mainly in the field of metal production as described above. In particular, since a large velocity gradient can be formed in the melt, it is possible to promote aggregation and enlargement of inclusion particles in the melt.
【００１３】[0013]
【発明の実施の形態】以下、本発明を発明の実施の形態
に則して詳細に説明する。図１は、本発明の電磁撹拌装
置の一例を示す概略図である。図１に示す電磁撹拌装置
は、円筒形の容器１と、この容器１の外周面に設けられ
た回転磁界発生コイル（以降、「Ｒコイル」と略す場合
がある）２と、容器１の外周面において、軸方向に沿っ
て設けられた軸方向移動磁界発生コイル（以降、「Ｌコ
イル」と略す場合がある）３とを具えている。Ｒコイル
２によって、容器１内に容れられた融体に対して回転運
動が生ぜしめられ、Ｌコイル３によって、前記融体に対
して軸方向運動が生ぜしめられる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the embodiments of the invention. FIG. 1 is a schematic view showing an example of the electromagnetic stirring device of the present invention. The electromagnetic stirrer shown in FIG. 1 includes a cylindrical container 1, a rotating magnetic field generating coil (hereinafter sometimes abbreviated as “R coil”) 2 provided on the outer peripheral surface of the container 1, and an outer periphery of the container 1. In the plane, an axial moving magnetic field generating coil (hereinafter sometimes abbreviated as “L coil”) 3 provided along the axial direction is provided. The R-coil 2 causes a rotational movement with respect to the melt contained in the container 1 and the L-coil 3 causes an axial movement with respect to the melt.
【００１４】容器１には、例えば、内径５５ｍｍ、高さ
１５０ｍｍのプラスチックなどからなる金属製容器を用
いる。Ｒコイル２には、例えば、２極式の矩形状のコイ
ルピースを用いる。Ｌコイル３には、例えば、円形コイ
ルピースを用いる。As the container 1, for example, a metal container made of plastic having an inner diameter of 55 mm and a height of 150 mm is used. As the R coil 2, for example, a bipolar pole-shaped coil piece is used. For the L coil 3, for example, a circular coil piece is used.
【００１５】これらのコイルは、図示しない冷却用オイ
ルを満たした環状容器内に設置し、通電による過熱を防
止する。Ｒコイル２には５０Hzの３相交流電源から電圧
調整器を経て通電し、Ｌコイル３には周波数可変のイン
バータを経て任意周波数の３相交流を通電する。These coils are installed in an annular container filled with cooling oil (not shown) to prevent overheating due to energization. The R coil 2 is energized from a 50 Hz three-phase AC power source via a voltage regulator, and the L coil 3 is energized with a three-phase AC power of an arbitrary frequency via a variable frequency inverter.
【００１６】なお、Ｒコイル２及びＬコイル３の数は特
に限定されず、容器１内に容れて撹拌すべき融体の種類
及び量、並びに撹拌のモード及び強度などに応じて任意
に設定する。図１においては、Ｒコイル２及びＬコイル
３の数は、それぞれ６個に設定している。また、容器１
内には融体４が容れられており、Ｒコイル２及びＬコイ
ル３は、容器１の外周面において、融体４を覆うように
して設けられている。The numbers of the R coils 2 and the L coils 3 are not particularly limited, and are arbitrarily set according to the kind and amount of the melt contained in the container 1 to be stirred and the stirring mode and strength. . In FIG. 1, the number of R coils 2 and the number of L coils 3 are each set to 6. Also, container 1
A melt 4 is contained therein, and the R coil 2 and the L coil 3 are provided on the outer peripheral surface of the container 1 so as to cover the melt 4.
【００１７】図２は、図１に示す容器１内に溶融Ｇａを
高さ１００ｍmまで満たし、前記溶融Ｇａ液面の半径方
向の高さ分布を深針法で測定した結果をグラフ（ａ）と
して示した。また、図２には、Ｒコイルのみに通電して
前記溶融Ｇａに対して回転運動のみを生ぜしめた場合、
及びＬコイルのみに通電して前記溶融Ｇａに対して軸方
向運動のみを生ぜしめた場合における半径方向の高さ分
布を、それぞれグラフ（ｂ）及び（ｃ）として示した。FIG. 2 is a graph (a) showing the results of measuring the radial height distribution of the molten Ga liquid surface in the container 1 shown in FIG. 1 up to a height of 100 mm by the deep needle method. Indicated. Further, in FIG. 2, when only the R coil is energized to cause only the rotational movement with respect to the molten Ga,
Also, the height distributions in the radial direction when only the L coil is energized to cause only the axial movement with respect to the molten Ga are shown as graphs (b) and (c), respectively.
【００１８】なお、図２の横軸は、数値“０”が容器１
内の半径方向の中心を示す。また、予備実験により軸方
向移動磁界の周波数は、本実験条件では１３００Hzが最
適であることを確認した。In the horizontal axis of FIG. 2, the numerical value "0" indicates the container 1
The radial center inside is shown. In addition, preliminary experiments confirmed that the optimum axial magnetic field frequency was 1300 Hz under the present experimental conditions.
【００１９】溶融Ｇａに対して回転運動及び軸方向運動
を生ぜしめた場合においては、図２のグラフ（ａ）から
明らかなように、液面はほぼ平坦であるが、溶融Ｇａに
対して回転運動のみを生ぜしめた場合は、グラフ（Ｃ）
から明らかなように、その液面は容器１の中央部におい
て大きく凹むことが判明した。また、溶融Ｇａに対して
軸方向運動のみを生ぜしめた場合は、グラフ（ｂ）から
明らかなように、その液面は中央部において盛り上がっ
ていることが分かる。When the rotational movement and the axial movement are generated with respect to the molten Ga, the liquid surface is almost flat as shown in the graph (a) of FIG. 2, but is rotated with respect to the molten Ga. Graph (C) when only exercise is caused
As is clear from the above, it was found that the liquid surface was largely recessed in the central portion of the container 1. Further, when only the axial movement is generated with respect to the molten Ga, it is clear from the graph (b) that the liquid level rises in the central portion.
【００２０】図３〜図５は、上述した現象を模式的に示
す図である。図３は、本発明に従って融体に対して回転
運動及び軸方向運動を生ぜしめた場合である。この場合
においては、図３から明らかなように、容器の外周部に
おいて融体に対して下降流が生じ、この下降流は前記容
器の底部において反転して上昇流となり、前記融体の中
央部の液面を押し上げる。この結果、前記融体の液面
は、容器の半径方向に亘ってほぼ均一となる。3 to 5 are diagrams schematically showing the above-mentioned phenomenon. FIG. 3 shows a case in which a rotational movement and an axial movement are generated in the melt according to the present invention. In this case, as is clear from FIG. 3, a downward flow is generated with respect to the melt in the outer peripheral portion of the container, and this downward flow is reversed at the bottom of the container to become an upward flow, and the central part of the melt is formed. Push up the liquid surface of. As a result, the liquid surface of the melt becomes substantially uniform in the radial direction of the container.
【００２１】図４は、融体に対して回転運動のみを生ぜ
しめた場合である。この場合においては、前記回転運動
に起因した渦が発生するために、図４に示すように、前
記融体の液面は、容器の中央部において凹むようになる
ものである。図５は、融体に対して軸方向運動のみを生
ぜしめた場合である。この場合においては、容器の中央
部において融体に上昇流が発生するために、その液面は
容器の中央部において盛り上がるようになるものであ
る。FIG. 4 shows a case where only a rotational movement is generated with respect to the melt. In this case, since a vortex is generated due to the rotational movement, as shown in FIG. 4, the liquid surface of the melt is recessed in the central portion of the container. FIG. 5 shows the case where only the axial movement is generated with respect to the melt. In this case, since an ascending flow is generated in the melt in the center of the container, the liquid surface thereof rises in the center of the container.
【００２２】図６は、図１に示す電磁撹拌装置を用い、
融体に対して回転運動及び軸方向運動を生ぜしめた場合
における、前記回転運動の状態をモニタリングした結果
を示すグラフである。図６においては、図２に示すグラ
フを得た場合と同様に、溶融Ｇａを高さ１００ｍｍまで
容れ、この溶融Ｇａ中に平羽根の回転翼を配置し、回転
運動を生ぜしめるＲコイル２に対する印加電流値と、前
記溶融Ｇａの回転運動に基づく前記回転翼の回転数との
関係から、前記溶融Ｇａの回転状態をモニタリングし
た。FIG. 6 uses the electromagnetic stirrer shown in FIG.
It is a graph which shows the result of having monitored the state of the said rotary motion in the case of producing rotary motion and axial motion with respect to a melt. In FIG. 6, similarly to the case where the graph shown in FIG. 2 is obtained, the molten Ga is filled up to a height of 100 mm, the flat blade rotor blades are arranged in this molten Ga, and the R coil 2 which causes the rotary motion is generated. The rotating state of the molten Ga was monitored from the relationship between the applied current value and the rotational speed of the rotary blade based on the rotational movement of the molten Ga.
【００２３】図６における黒プロットのグラフから明ら
かなように、前記溶融Ｇａに対して回転運動のみを生ぜ
しめた場合は、Ｒコイル２に印加する電流値と、前記回
転翼の回転数とはほぼ正比例する。これに対して、Ｌコ
イル３に対して所定の電流を流し、前記溶融Ｇａに対し
て軸方向運動を生ぜしめた場合は、上方向及び下方向の
軸方向運動いずれにおいても、Ｒコイル２に対する同一
の印加電流値に対して、前記回転翼の回転数、すなわち
前記溶融Ｇａの回転運動は若干低下するものの、前記電
流値に対してほぼ正比例する結果が得られた。As is clear from the graph of the black plot in FIG. 6, when only the rotational movement is generated with respect to the molten Ga, the current value applied to the R coil 2 and the rotational speed of the rotary blade are Almost directly proportional. On the other hand, when a predetermined current is applied to the L coil 3 to cause an axial movement with respect to the molten Ga, the R coil 2 is subjected to both upward and downward axial movements. With respect to the same applied current value, the rotational speed of the rotary blade, that is, the rotational movement of the molten Ga was slightly decreased, but the result was almost directly proportional to the current value.
【００２４】すなわち、図６に示す結果によれば、回転
運動に対して軸方向運動を加えた場合においても、回転
運動を損なうことなく、両者を重畳させて融体の強力か
つ均一な撹拌を行なえることが分かる。That is, according to the results shown in FIG. 6, even when an axial motion is applied to the rotary motion, the rotary motion is not impaired and the two are superposed so that the melt is strongly and uniformly stirred. I know you can do it.
【００２５】以上、発明の実施の形態に則して本発明を
説明してきたが、本発明の内容は上記に限定されるもの
ではなく、本発明の範疇を逸脱しない限りにおいて、あ
らゆる変形や変更が可能である。Although the present invention has been described based on the embodiments of the present invention, the contents of the present invention are not limited to the above, and all modifications and changes are made without departing from the scope of the present invention. Is possible.
【００２６】[0026]
【発明の効果】以上説明したように、本発明によれば、
融体を容れるべき容器の外周面に沿って、回転磁界発生
コイルを設けるとともに、前記容器の外周面において、
前記容器の軸方向に沿って設けられた軸方向移動磁界発
生コイルを設け、前記融体に対して、前記回転磁界発生
コイルによって回転運動を生ぜしめ、前記軸方向移動磁
界発生コイルによって軸方向運動を生ぜしめるようにし
ている。この結果、前記融体中には、前記回転運動と前
記軸方向運動とが重畳した強力な流速運動が生じ、前記
融体は強力かつ均一に撹拌される。As described above, according to the present invention,
Along the outer peripheral surface of the container to contain the melt, with the rotating magnetic field generating coil, in the outer peripheral surface of the container,
An axial moving magnetic field generating coil is provided along the axial direction of the container, the rotary magnetic field generating coil causes a rotational movement with respect to the melt, and the axial moving magnetic field generating coil causes axial movement. I try to give birth to. As a result, a strong flow velocity motion in which the rotational motion and the axial motion are superposed occurs in the melt, and the melt is strongly and uniformly stirred.
【図１】 図１は、本発明の電磁撹拌装置の一例を示す
概略図である。FIG. 1 is a schematic view showing an example of an electromagnetic stirring device of the present invention.
【図２】 溶融Ｇａ液面の半径方向の高さ分布を深針法
で測定した結果を示すグラフである。FIG. 2 is a graph showing a result of measuring a radial height distribution of a molten Ga liquid surface by a deep needle method.
【図３】 回転運動及び軸方向運動による融体液面の変
化を概念的に示す図である。FIG. 3 is a diagram conceptually showing changes in the melt liquid level due to rotational movement and axial movement.
【図４】 回転運動のみによる融体液面の変化を概念的
に示す図である。FIG. 4 is a diagram conceptually showing a change in melt liquid level due to only rotational movement.
【図５】 軸方向運動による融体液面の変化を概念的に
示す図である。FIG. 5 is a diagram conceptually showing a change in melt liquid level due to axial movement.
【図６】 融体に対して回転運動及び軸方向運動を生ぜ
しめた場合における、前記回転運動の状態をモニタリン
グした結果を示すグラフである。FIG. 6 is a graph showing a result of monitoring a state of the rotary motion when the rotary motion and the axial motion are generated in the melt.
１ 容器 ２ 回転磁界発生コイル ３ 軸方向移動磁界発生コイル ４ 融体 1 container 2 Rotating magnetic field generating coil 3 Axial direction magnetic field generating coil 4 Melt
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｃ２１Ｃ 7/10 Ｃ２１Ｃ 7/10 Ｓ (72)発明者 安藤 努 宮城県仙台市太白区八木山本町１−24−６ −３ (72)発明者 舞嶽 孝二 宮城県仙台市青葉区中山８−24−５ Ｆターム(参考） 4E004 AA09 MB12 4G036 AC27 4K013 CC06 4K056 AA02 BA03 EA13 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 identification code FI theme code (reference) // C21C 7/10 C21C 7/10 S (72) Inventor Tsutomu Ando Yagiyamamotocho, Taishiro-ku, Sendai-shi, Miyagi 1-24-6-3 (72) Inventor Koji Maitake 8-24-5 Nakayama, Aoba-ku, Sendai-shi, Miyagi F-term (reference) 4E004 AA09 MB12 4G036 AC27 4K013 CC06 4K056 AA02 BA03 EA13
Claims (6)
ルと、 前記容器の前記外周面において、前記容器の軸方向に沿
って設けられた軸方向移動磁界発生コイルと、を具える
ことを特徴とする、電磁撹拌装置。1. A predetermined container, a rotating magnetic field generating coil provided along the outer peripheral surface of the container, and an axial moving magnetic field provided along the axial direction of the container on the outer peripheral surface of the container. An electromagnetic stirrer, comprising: a generating coil.
動磁界発生コイルとは、それぞれ独立に制御することを
特徴とする、請求項１に記載の電磁撹拌装置。2. The electromagnetic stirrer according to claim 1, wherein the rotating magnetic field generating coil and the axial moving magnetic field generating coil are independently controlled.
移動磁界発生コイルは、前記容器内に容れられた融体を
覆うようにして設けることを特徴とする、請求項１又は
２に記載の電磁撹拌装置。3. The electromagnetic field according to claim 1, wherein the rotating magnetic field generating coil and the axial moving magnetic field generating coil are provided so as to cover the melt contained in the container. Stirrer.
と、 前記容器の外周面に沿って設けられた回転磁界発生コイ
ルによって、前記融体に回転運動を生ぜしめる工程と、 前記容器の前記外周面において、前記容器の軸方向に沿
って設けられた軸方向移動磁界発生コイルによって、前
記融体に軸方向運動を生ぜしめる工程と、を含むことを
特徴とする、電磁撹拌方法。4. A step of containing a predetermined melt in a predetermined container; a step of causing a rotational motion in the melt by a rotating magnetic field generating coil provided along an outer peripheral surface of the container; A step of causing an axial movement magnetic field generating coil provided on the outer peripheral surface along the axial direction of the container to generate an axial movement in the melt.
動磁界発生コイルとは、それぞれ独立に制御することを
特徴とする、請求項１に記載の電磁撹拌方法。5. The electromagnetic stirring method according to claim 1, wherein the rotating magnetic field generating coil and the axial moving magnetic field generating coil are independently controlled.
運動と、前記軸方向移動磁界発生コイルによる前記軸方
向運動との重畳によって、前記容器の外周部において前
記融体に対して下降流を生じさせ、前記容器の中央部に
おいて上昇流を生じさせることにより、前記融体の液面
を平坦に保持するようにしたことを特徴とする、請求項
４又は５に記載の電磁撹拌方法。6. A downward flow is generated in the melt at the outer peripheral portion of the container by superimposing the rotational movement of the rotating magnetic field generating coil and the axial movement of the axial moving magnetic field generating coil. The electromagnetic stirring method according to claim 4, wherein the liquid surface of the melt is held flat by causing an upward flow in the central portion of the container.
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| JP2002023074A JP4134310B2 (en) | 2002-01-31 | 2002-01-31 | Electromagnetic stirring device and electromagnetic stirring method |
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