JP3083234B2 - Continuous casting method of molten metal - Google Patents
Continuous casting method of molten metalInfo
- Publication number
- JP3083234B2 JP3083234B2 JP06305830A JP30583094A JP3083234B2 JP 3083234 B2 JP3083234 B2 JP 3083234B2 JP 06305830 A JP06305830 A JP 06305830A JP 30583094 A JP30583094 A JP 30583094A JP 3083234 B2 JP3083234 B2 JP 3083234B2
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- JP
- Japan
- Prior art keywords
- molten metal
- mold
- electromagnetic
- continuous casting
- current
- 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 - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、主として、鋼、ステン
レス、合金、アルミニウムなどを鋳造対象とする固定鋳
型を用いた溶融金属の連続鋳造方法において、鋳型の外
側に電磁コイルを配設し、鋳型内の溶融金属にピンチ力
を付与して潤滑剤の送り込みを促進させるとともに、鋳
型内溶融金属湯面の擾乱を抑制する溶融金属の連続鋳造
方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting method of molten metal using a fixed mold mainly for casting steel, stainless steel, alloy, aluminum, etc., wherein an electromagnetic coil is provided outside the mold. The present invention relates to a method for continuously casting a molten metal, which imparts a pinch force to a molten metal in a mold to promote feeding of a lubricant and suppresses disturbance of a molten metal surface in the mold.
【０００２】[0002]
【従来の技術】従来から、例えば鋼の連続鋳造プロセス
においては、溶鋼湯面に添加され、溶融する潤滑剤は、
所定の条件で振動する鋳型と一定速度で引き抜かれる凝
固シェルとの間にこれらの相互作用あるいは自然落下に
よって流入、消費されるもので、この潤滑剤による潤滑
性の良否は連続鋳造の操業性、鋳片の品質特に表面性状
に大きく影響することが知られている。2. Description of the Related Art Conventionally, for example, in a continuous casting process of steel, a lubricant added to a molten steel surface and melted is
The interaction between the mold vibrating under the predetermined conditions and the solidified shell drawn at a constant speed is caused by the interaction or natural fall of the mold, and is consumed.The lubricity of this lubricant is determined by the operability of continuous casting, It is known that it greatly affects the quality of cast slabs, particularly the surface properties.
【０００３】この潤滑剤の消費量は、鋳型と凝固シェル
間の潤滑を支配する重要な因子と考えられており、これ
を増加させるために種々の方策が提案されている。例え
ば、特開昭５２−３２８３４号公報などには、例えば、
図７に示すように、銅板１ａで形成された固定鋳型１の
外側に、バックプレート２を介してこれを包囲するよう
に電磁コイル３を配設するとともに、この鋳型内に浸漬
ノズル４を配設し、この浸漬ノズルから鋳型内に溶融金
属ｓを注入しながら、電源５から電磁コイル３に通電
し、鋳型内溶融金属ｓの鋳型近傍部を電磁力によりピン
チして、溶融金属の湯面を鋳型１近傍で湾曲せしめ陥没
部６を形成することにより、潤滑剤（パウダー）ｐの送
り込みを促進して潤滑性を高めて、凝固後の鋳片ｓｃの
表面性状を改善することが開示されている。[0003] The consumption of the lubricant is considered to be an important factor governing the lubrication between the mold and the solidified shell, and various measures have been proposed to increase this. For example, JP-A-52-32834 discloses, for example,
As shown in FIG. 7, an electromagnetic coil 3 is arranged outside a stationary mold 1 formed of a copper plate 1a via a back plate 2 so as to surround the same, and an immersion nozzle 4 is arranged in the mold. Power is supplied to the electromagnetic coil 3 from the power supply 5 while pouring the molten metal s into the mold from the immersion nozzle, and the vicinity of the mold of the molten metal s in the mold is pinched by the electromagnetic force, so that the molten metal surface Is formed in the vicinity of the mold 1 to form a recessed portion 6, thereby facilitating the feeding of the lubricant (powder) p to enhance the lubricity and improving the surface properties of the solidified slab sc. ing.
【０００４】ここに開示されているような連続鋳造方法
において、固定鋳型の外側に配置した電磁コイルに通電
して鋳型内溶融金属に電磁力を作用させて、鋳型内溶融
金属のメニスカスを盛り上げる場合に、電磁力によっ
て、異常流動が発生し、溶融金属の湯面ｓｆが点線で示
すように擾乱（異常流動）し、メニスカスが好ましくな
い変形を生じ、均一な表面性状を有する鋳片を得ること
ができないという問題がある。In the continuous casting method disclosed herein, when an electromagnetic coil disposed outside the fixed mold is energized to cause an electromagnetic force to act on the molten metal in the mold, the meniscus of the molten metal in the mold is raised. In particular, abnormal flow is generated by electromagnetic force, and the molten metal surface sf is disturbed (abnormal flow) as shown by a dotted line, causing undesired deformation of the meniscus and obtaining a slab having uniform surface properties. There is a problem that can not be.
【０００５】このような現象の発生を抑制する手段とし
て、例えば特開平５−２９３６１３号公報には、鋳型内
溶融金属に交流磁場と直流磁場を付与することが提案さ
れている他、電磁コイルに対する通電電流の電流波形を
制御することも試みられている。しかし、このように様
々な電流波形の通電電流を組み合わせるために、かなり
大型で複雑な電源設備を必要とするため設備費コスト面
で課題が残されている。As means for suppressing the occurrence of such a phenomenon, for example, Japanese Unexamined Patent Publication No. Hei 5-293613 proposes applying an alternating magnetic field and a direct magnetic field to a molten metal in a mold. Attempts have also been made to control the current waveform of the current flow. However, in order to combine the currents having various current waveforms as described above, a considerably large and complicated power supply facility is required, so that there is a problem in terms of facility cost.
【０００６】[0006]
【発明が解決しようとする課題】本発明においては、溶
融金属を注入して凝固させる固定鋳型の外側に電磁コイ
ルを配置し、鋳型内溶融金属を電磁力によりピンチしな
がら鋳造を行う溶融金属の連続鋳造方法において、簡易
で安価な手段により、電磁コイルに対する通電電流波形
を組み合わせ、鋳型内溶融金属に対するピンチ力を付与
するとともに、湯面の擾乱（異常流動）を抑制すること
により、均一な表面性状を有する鋳片を鋳造できる溶融
金属の連続鋳造方法を提供するものである。SUMMARY OF THE INVENTION In the present invention, an electromagnetic coil is arranged outside a fixed mold for injecting and solidifying molten metal, and the molten metal is cast while pinching the molten metal in the mold by electromagnetic force. In the continuous casting method, the current flowing through the electromagnetic coil is combined by a simple and inexpensive means to apply a pinch force to the molten metal in the mold and suppress the disturbance (abnormal flow) of the molten metal surface to obtain a uniform surface. An object of the present invention is to provide a method for continuously casting molten metal capable of casting a slab having properties.
【０００７】[0007]
【課題を解決するための手段】本発明は、溶融金属を注
入して凝固させる固定鋳型の外側に電磁コイルを配置
し、鋳型内溶融金属を電磁力によりピンチしながら鋳造
を行う溶融金属の連続鋳造方法において、２個の電磁コ
イルを鋳型の厚み方向あるいは鋳造方向に並設して、こ
の２個の電磁コイルを別の電源で駆動するようにし、一
方の電磁コイルには交流電流を通電し、他方の電磁コイ
ルには直流のオン−オフ電流を通電することにより、溶
融金属に対するピンチ力を制御することを特徴とする溶
融金属の連続鋳造方法。SUMMARY OF THE INVENTION According to the present invention, there is provided a continuous casting of molten metal in which an electromagnetic coil is arranged outside a fixed mold for injecting and solidifying the molten metal and the molten metal in the mold is pinched by electromagnetic force. in casting method, the two electromagnetic coils and arranged in the thickness direction or the casting direction of the mold, so as to drive the two electromagnetic coils in different power one
An alternating current flows through one of the electromagnetic coils, and the other
A continuous casting method for molten metal, characterized in that a pinch force on the molten metal is controlled by applying a DC on-off current to the molten metal.
【０００８】[0008]
【作用】本発明においては、溶融金属を注入して凝固さ
せる固定鋳型の外側に２個の電磁コイルを並設し、この
２個の電磁コイルにそれぞれ安価な２個の小容量電源か
ら通電するよう構成を有しているので、設備コストを大
幅に改善することができ、１個の電磁コイルと大型の１
個の電源を配置した前記従来の場合と同様、鋳型型内溶
融金属をピンチすると同時に、鋳型内溶融金属湯面の擾
乱（異常流動）を抑制して、均一な表面性状を有する鋳
片を鋳造できる。According to the present invention, two electromagnetic coils are juxtaposed outside a fixed mold for injecting and solidifying a molten metal, and power is supplied to these two electromagnetic coils from two inexpensive small-capacity power sources. With such a configuration, the equipment cost can be greatly improved, and one electromagnetic coil and one large
As in the above-described conventional case in which a plurality of power supplies are arranged, the molten metal in the mold is pinched, and at the same time, disturbance (abnormal flow) of the molten metal surface in the mold is suppressed to cast a slab having a uniform surface property. it can.
【０００９】本発明者等は、溶融金属を注入して凝固さ
せる固定鋳型の外側に電磁コイルを配置し、鋳型内溶融
金属を電磁力によりピンチしながら鋳造を行う溶融金属
の連続鋳造方法について、種々の実験を通じて電磁コイ
ルに電磁力を発生させて鋳型内溶融金属の湯面を盛り上
げる場合に、電磁力によって湯面が擾乱（異常流動）し
て、表面性状が均一で良好な鋳片が得られないことを知
見した。The present inventors have proposed a continuous casting method of molten metal in which an electromagnetic coil is arranged outside a fixed mold for injecting and solidifying molten metal and casting is performed while pinching the molten metal in the mold by electromagnetic force. When the electromagnetic force is generated in the electromagnetic coil through various experiments to raise the molten metal surface in the mold, the molten metal surface is disturbed (abnormal flow) by the electromagnetic force, and a good slab with uniform surface properties is obtained. It was found that it was not possible.
【００１０】そして、このように、鋳型内溶融金属の湯
面の擾乱に対しては、電磁コイルに対する通電電流の電
流波形を組み合わせて、鋳型内溶融金属に対する電磁力
を一時的に小さくあるいは０にするような制御をするこ
とが、有効であるとの認識にたって、そのための安価な
手段を検討し、本発明を完成するに至った。[0010] As described above, with respect to the disturbance of the molten metal surface in the molten metal in the mold, the electromagnetic force on the molten metal in the mold is temporarily reduced to zero or zero by combining the current waveforms of the currents supplied to the electromagnetic coils. Recognizing that it is effective to perform such control, the present inventor has studied inexpensive means for achieving this and has completed the present invention.
【００１１】本発明では、独立した２つの小容量電源に
より駆動する２つの電磁コイルを鋳型の外側において鋳
型の厚み方向あるいは鋳造方向に並設して、この２つ電
磁コイルにそれぞれの電源から通電するようにしたもの
である。According to the present invention, two electromagnetic coils driven by two independent small-capacity power supplies are arranged outside the mold in a thickness direction or a casting direction of the mold, and power is supplied to the two electromagnetic coils from the respective power supplies. It is something to do.
【００１２】より具体的には、安価な２つの小容量の電
源から、それぞれの電磁コイルに通電する電流波形を変
えてこれを組み合わせることにより、あるいは一方の電
磁コイルには、交流電流を通電し、他方の電磁コイルに
は直流のオン−オフ電流を通電することにより、鋳型内
溶融金属に対する電磁力を一時的に弱めるものの、ピン
チ力を十分に確保するとともに、溶融金属湯面の擾乱を
抑制する。More specifically, two inexpensive small-capacity power supplies are used to change the current waveforms applied to the respective electromagnetic coils and combine them, or to apply an alternating current to one of the electromagnetic coils. By applying a DC on-off current to the other electromagnetic coil, the electromagnetic force on the molten metal in the mold is temporarily reduced, but the pinch force is sufficiently secured and the disturbance of the molten metal surface is suppressed. I do.
【００１３】なお、電磁コイルに対する通電電流の電流
波形の組み合わせについては、実験、実績、計算等によ
って予めあるいは学習的に、鋳造対象、鋳型形状、鋳型
サイズ、浸漬ノズル条件、鋳造速度等の鋳造条件に応じ
て選択することができる。The combination of the current waveforms of the energizing currents to the electromagnetic coil is determined in advance or learned by experiments, results, calculations, and the like, in advance, based on the casting conditions such as the casting object, mold shape, mold size, immersion nozzle conditions, and casting speed. Can be selected according to
【００１４】本発明は鋼の他、ステンレス、合金、アル
ミニウムなどを鋳造対象とする、外側に電磁コイルを配
設して鋳型内溶融金属をピンチできるようにした固定鋳
型を用いた連続鋳造方法としても適用可能である。The present invention relates to a continuous casting method using a fixed mold in which an electromagnetic coil is disposed outside so as to be able to pinch the molten metal in the mold, in addition to steel, stainless steel, alloy, aluminum, and the like. Is also applicable.
【００１５】[0015]
（実施例１）以下に本発明を溶鋼の連続鋳造方法におい
て適用した場合の実施例を実施装置例とともに説明す
る。この実施例は、図１に示すように、角型の固定鋳型
を用いた連続鋳造装置において、鋳型１の外側に独立し
た２つの小容量電源５ａ，５ｂにより駆動する２つの電
磁コイル３ａ，３ｂが鋳型の厚み方向に並設され、この
２つ電磁コイル３ａ，３ｂにそれぞれの電源５ａ，５ｂ
から通電するようにしたものである。(Embodiment 1) An embodiment in which the present invention is applied to a continuous casting method of molten steel will be described below together with an example of an apparatus. In this embodiment, as shown in FIG. 1, in a continuous casting apparatus using a square fixed mold, two electromagnetic coils 3a, 3b driven by two independent small-capacity power supplies 5a, 5b outside the mold 1. Are provided side by side in the thickness direction of the mold, and these two electromagnetic coils 3a, 3b are connected to respective power supplies 5a, 5b.
It is designed to be energized from.
【００１６】７は電流制御装置で、設定器８に設定され
ている電流通電条件にしたがって電源５ａ，５ｂ対し
て、通電電流条件を指令する。設定器８には、この２つ
の電源５ａ，５ｂから電磁コイル３ａ，３ｂへの通電電
流の電流波形の組み合わせ、通電電流、通電時間、これ
らの切り換え条件等が設定されており、電源５ａ，５ｂ
から電磁コイル３ａ，３ｂに対して、連動的に通電が行
われる。Reference numeral 7 denotes a current control device for instructing the power supplies 5a and 5b to supply current conditions according to the current supply conditions set in the setting unit 8. In the setting unit 8, the combination of the current waveforms of the currents flowing from the two power sources 5a, 5b to the electromagnetic coils 3a, 3b, the current flowing, the current flowing time, the switching conditions thereof, and the like are set.
Are supplied to the electromagnetic coils 3a and 3b in an interlocked manner.
【００１７】このようにして、安価な２つの小容量電源
からの通電電流の電流波形を組み合わせて通電すること
によって、様々な通電パターンを選択することにより、
鋳型内溶融金属をピンチするとともに、メニスカスの擾
乱を抑制し、表面性状の良好な鋳片を鋳造することがで
きる。In this way, by supplying current by combining current waveforms of current supplied from two inexpensive small-capacity power supplies, various current supply patterns can be selected.
It is possible to pinch the molten metal in the mold, suppress disturbance of the meniscus, and cast a slab having good surface properties.
【００１８】また、図２は、本発明の他の実施例を示し
ており、この例では鋳型１の外側において、独立した電
源５ａ，５ｂから通電される二つの電磁コイル３ａ，３
ｂを鋳造方向に並設している。このように二つの電磁コ
イルを鋳造方向に並設して、図１の実施例と同様にして
電磁コイルに対する通電パターンを選択することによ
り、二つの電磁コイルを鋳型の厚み方向に並設した図１
の実施例の場合とほぼ同様の効果を得ることができる。FIG. 2 shows another embodiment of the present invention. In this embodiment, two electromagnetic coils 3a, 3b energized from independent power sources 5a, 5b outside the mold 1.
b are juxtaposed in the casting direction. In this manner, the two electromagnetic coils are juxtaposed in the casting direction by arranging the two electromagnetic coils side by side in the casting direction and selecting an energization pattern for the electromagnetic coils in the same manner as in the embodiment of FIG. 1
Almost the same effects as those of the embodiment can be obtained.
【００１９】（実施例１−１）図１に示す実施例のよう
な構成を有する鋳型１を用い、電磁コイル３ａ（サイ
ズ：内寸法：１７００mm×４５０mm）には小容量の電源
５ａ（容量：４００kvA）から図３に示すような、波高
値２５０Ａ，周波数５０Hzの正弦波形の交流電流を通電
し、電磁コイル３ｂ（サイズ：内寸法：１９５０mm×７
００mm）には電源５ｂ（容量：６００kvA ）から図４に
示すような、波高値１０００Ａ−０Ａの矩形波形の直流
電流を通電し、鋳型内に図５に示すような、磁束密度を
発生させながら鋼の連続鋳造を実施した。(Embodiment 1-1) Using a mold 1 having the structure as shown in the embodiment shown in FIG. 1, a small-capacity power supply 5a (capacity: inner size: 1700 mm × 450 mm) is used for an electromagnetic coil 3a. 400 kvA), an alternating current of a sine waveform having a peak value of 250 A and a frequency of 50 Hz as shown in FIG. 3 is applied to the electromagnetic coil 3b (size: inner dimensions: 1950 mm × 7).
00 mm), a DC current having a rectangular waveform with a peak value of 1000A-0A as shown in FIG. 4 is applied from a power supply 5b (capacity: 600 kvA) to generate a magnetic flux density in the mold as shown in FIG. Continuous casting of steel was performed.
【００２０】鋳型内にこのような磁束密度を印加しなが
ら鋳造を行うことで、鋳型内溶鋼に強いピンチ力が作用
する期間と、殆どピンチ力が作用しない期間が交互に表
れるため、溶鋼の湯面は大きく盛り上がる状態と殆ど盛
り上がらない状態を繰り返し、その結果、溶鋼と鋳型間
に潤滑剤の送り込みが促進されると同時に、メニスカス
の擾乱が抑制され安定した鋳造を行うことができた。得
られた鋳片は、オシレーションマークの平均深さ７０μ
ｍで良好な表面性状を示した。By performing casting while applying such a magnetic flux density in the mold, a period in which a strong pinch force acts on the molten steel in the mold and a period in which almost no pinch force acts appear alternately. The surface repeatedly swelled and hardly swelled as a result. As a result, the feeding of the lubricant between the molten steel and the mold was promoted, and at the same time, disturbance of the meniscus was suppressed and stable casting was performed. The obtained slab has an average depth of oscillation mark of 70μ.
m showed good surface properties.
【００２１】（比較例）本発明を適用しない図７に示す
ような従来の１個の電磁コイル（サイズ：内寸法 １７
００mm×４５０mm）と、１個の電源（容量：１０００kv
A ）を配置した鋳型を用いて、電磁コイルに図６に示す
ような電流波形の通電を行いながら連続鋳造を実施し
た。その結果、得られた鋳片は、オシレーションマーク
の平均深さ７５μｍで、本実施例による場合と同等の表
面性状を示した。しかし、この比較例では、一個の大型
の電源設備と複雑な電流波形を得るための高価な装置を
必要とし、設備コストは本実施例の場合に比し２０％程
度増加した。(Comparative Example) A conventional single electromagnetic coil as shown in FIG.
00mm x 450mm) and one power supply (capacity: 1000kv
Using the mold in which A) was arranged, continuous casting was performed while energizing the electromagnetic coil with a current waveform as shown in FIG. As a result, the obtained slab showed the same surface texture as that of the present example at an average depth of the oscillation mark of 75 μm. However, in this comparative example, one large power supply equipment and an expensive device for obtaining a complicated current waveform were required, and the equipment cost was increased by about 20% as compared with the case of this embodiment.
【００２２】鋳造条件（実施例、比較例共通） 鋳片 鋼種：炭素鋼 サイズ：幅 １５００mm，キャビティ厚み ２５０mm 鋳型 高さ：８００mm 鋳型板中央部厚み：２５mm バックプレート（ＳＵＳ３０４） 厚み：４０mm 鋳造速度：２m/min 鋳型へのオシレーション付与：周波数 １２０cpm ，ス
トローク±５mmCasting conditions (common to Examples and Comparative Examples) Cast slab Steel type: carbon steel Size: width 1500 mm, cavity thickness 250 mm Mold height: 800 mm Mold plate center part thickness: 25 mm Back plate (SUS304) thickness: 40 mm Casting speed: 2m / min Oscillation applied to mold: frequency 120cpm, stroke ± 5mm
【００２３】[0023]
【発明の効果】本発明においては、溶融金属を注入して
凝固させる固定鋳型の外側に２個の電磁コイルを並設
し、この２個の電磁コイルにそれぞれ安価な２個の小容
量電源から通電するよう構成を有しているので、設備コ
ストを大幅に改善することができ、１個の電磁コイルと
大型の１個の電源を配置した前記従来の場合と同様、鋳
型型内溶融金属をピンチすると同時に、鋳型内溶融金属
湯面の擾乱（異常流動）を抑制して、均一な表面性状を
有する鋳片を鋳造できる。According to the present invention, two electromagnetic coils are juxtaposed outside a fixed mold for injecting and solidifying a molten metal, and these two electromagnetic coils are supplied from two inexpensive small-capacity power supplies, respectively. Since it has a configuration to energize, the equipment cost can be greatly improved, and the molten metal in the mold can be removed as in the case of the conventional case where one electromagnetic coil and one large power supply are arranged. At the same time as pinching, disturbance (abnormal flow) of the molten metal surface in the mold is suppressed, and a slab having uniform surface properties can be cast.
【図１】（ａ）図は本発明を実施する連続鋳造装置の鋳
型構造例を示す縦断面概要説明図、（ｂ）図は（ａ）図
の平面概要説明図。FIG. 1A is a schematic longitudinal sectional view showing an example of a mold structure of a continuous casting apparatus embodying the present invention, and FIG. 1B is a schematic plan view of FIG. 1A.
【図２】本発明における他の鋳型構造例（電磁コイル配
置例）を示す縦断面概要説明図。FIG. 2 is a schematic longitudinal sectional view showing another example of a mold structure (an example of electromagnetic coil arrangement) in the present invention.
【図３】本発明の実施例で一方の電磁コイルに通電した
電流波形を示す概要説明図。FIG. 3 is a schematic explanatory view showing a current waveform applied to one electromagnetic coil in the embodiment of the present invention.
【図４】本発明の実施例で他方の電磁コイルに通電した
電流波形を示す概要説明図。FIG. 4 is a schematic explanatory diagram showing a waveform of a current supplied to the other electromagnetic coil in the embodiment of the present invention.
【図５】本発明の実施例での鋳型内溶鋼に対する磁束密
度発生状態を示す概要説明図。FIG. 5 is a schematic explanatory view showing a magnetic flux density generation state for molten steel in a mold in an example of the present invention.
【図６】比較例で電磁コイルに通電した電流波形を示す
概要説明図。FIG. 6 is a schematic explanatory view showing a waveform of a current applied to an electromagnetic coil in a comparative example.
【図７】（ａ）図は本発明を適用する溶鋼の連続鋳造装
置例を示す縦断面概要説明図、（ｂ）図は、（ａ）図の
平面概要説明図。FIG. 7 (a) is a schematic longitudinal sectional view showing an example of a continuous casting apparatus for molten steel to which the present invention is applied, and FIG. 7 (b) is a schematic plan view of FIG. 7 (a).
１ 鋳型 １ａ 銅板 ２ バックプレート ３，３ａ，３ｂ 電磁コイル ４ 浸漬ノズル ５，５ａ，５ｂ 電源（電磁コイル用） ６ 湯面陥没部 ７ 電流制御装置 ８ 設定器 ｓ 溶鋼（溶融金属） ｓｆ 溶鋼湯面 ｓｃ 鋳片 ｐ 潤滑剤（パウダー） Reference Signs List 1 mold 1a copper plate 2 back plate 3, 3a, 3b electromagnetic coil 4 immersion nozzle 5, 5a, 5b power supply (for electromagnetic coil) 6 molten metal surface depression 7 current control device 8 setting device s molten steel (molten metal) sf molten steel molten metal surface sc Slab p Lubricant (powder)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤 健彦 千葉県富津市新富20−１ 新日本製鐵株 式会社 技術開発本部内 (56)参考文献 特開 昭52−32824（ＪＰ，Ａ) 特開 平５−318063（ＪＰ，Ａ) 特開 平３−90255（ＪＰ，Ａ) 特開 昭62−230459（ＪＰ，Ａ) 特開 平６−182497（ＪＰ，Ａ) 特開 昭58−86958（ＪＰ，Ａ) 特開 平２−287091（ＪＰ，Ａ) 特開 平４−13444（ＪＰ，Ａ) 特開 昭63−119959（ＪＰ，Ａ) 特開 平８−90183（ＪＰ，Ａ) 特開 平７−148555（ＪＰ，Ａ) 国際公開96／5926（ＷＯ，Ａ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/115 B22D 11/04 311 B22D 11/07 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takehiko Fuji 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division (56) References JP-A-52-32824 (JP, A) JP-A-5-318063 (JP, A) JP-A-3-90255 (JP, A) JP-A-62-230459 (JP, A) JP-A-6-182497 (JP, A) JP-A-58-86958 (JP-A-58-86958) JP, A) JP-A-2-287091 (JP, A) JP-A-4-13444 (JP, A) JP-A-63-119959 (JP, A) JP-A-8-90183 (JP, A) Hei 7-148555 (JP, A) WO 96/5926 (WO, A1) (58) Fields investigated (Int. Cl. 7 , DB name) B22D 11/115 B22D 11/04 311 B22D 11/07
Claims (1)
の外側に電磁コイルを配置し、鋳型内溶融金属を電磁力
によりピンチしながら鋳造を行う溶融金属の連続鋳造方
法において、２個の電磁コイルを鋳型の厚み方向あるい
は鋳造方向にに並設して、この２個の電磁コイルを別の
電源で駆動するようにし、一方の電磁コイルには交流電
流を通電し、他方の電磁コイルには直流のオン−オフ電
流を通電することにより、溶融金属に対するピンチ力を
制御することを特徴とする溶融金属の連続鋳造方法。1. A continuous casting method for a molten metal in which an electromagnetic coil is arranged outside a fixed mold for injecting and solidifying the molten metal and the molten metal in the mold is pinched by an electromagnetic force to perform casting. the coil was arranged in the thickness direction or the casting direction of the mold, so as to drive the two electromagnetic coils in different power, AC power to one of the electromagnetic coils
Current and the other electromagnetic coil has a DC on-off
A continuous casting method for molten metal, comprising controlling a pinch force on the molten metal by energizing the flow .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06305830A JP3083234B2 (en) | 1994-12-09 | 1994-12-09 | Continuous casting method of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06305830A JP3083234B2 (en) | 1994-12-09 | 1994-12-09 | Continuous casting method of molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08155608A JPH08155608A (en) | 1996-06-18 |
| JP3083234B2 true JP3083234B2 (en) | 2000-09-04 |
Family
ID=17949893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06305830A Expired - Lifetime JP3083234B2 (en) | 1994-12-09 | 1994-12-09 | Continuous casting method of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3083234B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829767B (en) * | 2010-05-26 | 2013-10-09 | 丽达科技有限公司 | Silicon electromagnetic casting device |
-
1994
- 1994-12-09 JP JP06305830A patent/JP3083234B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08155608A (en) | 1996-06-18 |
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