JPS61212463A - Electromagnetic stirrer - Google Patents
Electromagnetic stirrerInfo
- Publication number
- JPS61212463A JPS61212463A JP5512485A JP5512485A JPS61212463A JP S61212463 A JPS61212463 A JP S61212463A JP 5512485 A JP5512485 A JP 5512485A JP 5512485 A JP5512485 A JP 5512485A JP S61212463 A JPS61212463 A JP S61212463A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molten steel
- peripheral surface
- core
- cylindrical
- 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
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、鋳塊(インゴット)の製造工程において鋳型
に注入された金属溶湯(溶鋼)を攪拌する電磁攪拌装置
に関する。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an electromagnetic stirring device for stirring molten metal (molten steel) poured into a mold during the ingot manufacturing process.
「従来の技術」
周知のように、圧延、鍛造などの素材となるインゴット
の製造工程は第3図(イ)、(ロ)、(ハ)に示す通り
である。まず、第3図(イ)に示すように、転炉Iによ
って製造された溶鋼2は、一旦し一ドル3に移された後
、第3図(ロ)に示すように台車4上に載置された筒状
の鋳型5に注入される。そして、第3図(ハ)に示すよ
うに鋳型5内で溶鋼2が凝固してインゴット6となる。"Prior Art" As is well known, the manufacturing process of ingots, which are raw materials, such as rolling and forging, is as shown in FIGS. 3(a), (b), and (c). First, as shown in FIG. 3(a), the molten steel 2 produced by the converter I is transferred to the dollar 3, and then placed on the trolley 4 as shown in FIG. 3(b). The liquid is injected into a cylindrical mold 5 placed therein. Then, as shown in FIG. 3(c), the molten steel 2 solidifies in the mold 5 to form an ingot 6.
「発明が解決しようとする問題点」
ところで、近年、連続鋳造装置においては、溶鋼が凝固
する過程で生じる柱状晶を等軸品に品質改善するために
電磁攪拌装置が設けられており、効果を上げている。し
かしながら、上述した、インゴット6の製造工程におい
ては、レードル3から鋳型5に注入された溶鋼2が鋳型
5内において凝固しインゴット6となるまでの間、なん
ら品質改善処理がなされていなかった。その結果、溶鋼
2が凝固する過程において、柱状晶が発生し、この柱状
晶が発生したインゴット6は、分塊圧延する際にクラッ
クが生じるため歩留まりが悪いという欠点があった。``Problems to be solved by the invention'' In recent years, continuous casting equipment has been equipped with electromagnetic stirring devices to improve the quality of columnar crystals produced during the solidification process of molten steel into equiaxed products. I'm raising it. However, in the above-mentioned manufacturing process of the ingot 6, no quality improvement treatment was performed until the molten steel 2 injected from the ladle 3 into the mold 5 solidified in the mold 5 to become the ingot 6. As a result, in the process of solidifying the molten steel 2, columnar crystals are generated, and the ingot 6 in which the columnar crystals are generated cracks during blooming, resulting in a poor yield.
本発明は上述した事情に鑑みてなされたもので、インゴ
ットを製造する過程において、鋳型内に注入された溶鋼
を攪拌することにより、溶鋼の温度を均一にするととも
に柱状晶を等軸晶に品質改善することができる電磁攪拌
装置を提供することを目的としている。The present invention was made in view of the above-mentioned circumstances, and in the process of manufacturing ingots, by stirring the molten steel poured into the mold, the temperature of the molten steel is made uniform and the columnar crystals are transformed into equiaxed crystals. The purpose is to provide an improved electromagnetic stirring device.
「問題点を解決するための手段」
本発明は、筒状の鋳型に注入された金属溶湯を攪拌する
電磁攪拌装置において、内周面に沿って複数のスロット
が形成された筒状のコアと、前記複数のスロットに設け
られ、前記コアの内周側に回転磁界を発生する複数のコ
イルと、前記コア及びコイルを収納するとともに前記鋳
型の外周面に対応した形状の内周面を有する筒状のケー
スとを具備することを特徴としている。"Means for Solving the Problems" The present invention provides an electromagnetic stirring device for stirring molten metal poured into a cylindrical mold, which includes a cylindrical core having a plurality of slots formed along its inner circumferential surface. , a plurality of coils that are provided in the plurality of slots and generate a rotating magnetic field on the inner peripheral side of the core, and a cylinder that accommodates the core and the coil and has an inner peripheral surface shaped to correspond to the outer peripheral surface of the mold. It is characterized by having a case shaped like this.
「作用」
コイルによって発生した回転磁界によって、鋳型内に注
入された溶鋼が攪拌されるので、溶鋼の温度が均一にな
るとともに柱状晶が等輪金に品質改善される。"Operation" The rotating magnetic field generated by the coil stirs the molten steel injected into the mold, so the temperature of the molten steel becomes uniform and the quality of the columnar crystals is improved to uniform metal.
「実施例」
以下、本発明の実施例について図面を参照して説明する
。"Embodiments" Examples of the present invention will be described below with reference to the drawings.
第1図(イ)、(ロ)及び第2図は本発明の一実施例の
構成を示す図である。これらの図において、lOは内周
面に沿って複数のスロットlOa、10a・・・が形成
された筒状のコアであす、12.12・・・は各スロッ
トlOa、10a・・・に設けられ、コアIOの内周側
に回転磁界を発生するコイルである。FIGS. 1(A), 1(B), and 2 are diagrams showing the configuration of an embodiment of the present invention. In these figures, lO is a cylindrical core in which a plurality of slots lOa, 10a... are formed along the inner peripheral surface, and 12.12... are provided in each slot lOa, 10a... This is a coil that generates a rotating magnetic field on the inner peripheral side of the core IO.
これらのコア10及びコイル12は全体として誘導電動
機のステータと略同−形状をなしており、鋳型5の外周
面に対応した形状の内周面を有する筒状のケース!4内
に収納されている。ケース14は上下両端面及び内周面
を構成する水冷ジャケット1’4 aと、外周面を構成
するカバー14bとから成り、カバー14bには吊り耳
15.15 ・・・が設けられ、水冷ジャケット14
aには鋳型5の外周面との間に介在するように断熱材1
6.16 ・・・が設けられている。以上によって、
電磁攪拌装置17が構成されている。そして、吊り耳1
5.15・・・に吊り治具18を取り付け、この吊り治
具I8をクレーンなどによって吊り上げることにより、
上述した構成の電磁攪拌装置17全体を上下左右方向へ
移動するが可能になっている。These core 10 and coil 12 as a whole have approximately the same shape as the stator of the induction motor, and are a cylindrical case with an inner circumferential surface shaped to correspond to the outer circumferential surface of the mold 5! It is housed in 4. The case 14 consists of a water cooling jacket 1'4a that forms both upper and lower end surfaces and an inner peripheral surface, and a cover 14b that forms an outer peripheral surface.The cover 14b is provided with hanging ears 15, 15, . 14
A has a heat insulating material 1 interposed between it and the outer peripheral surface of the mold 5.
6.16 ... is provided. By the above,
An electromagnetic stirring device 17 is configured. And hanging ears 1
5. By attaching the lifting jig 18 to 15... and lifting this lifting jig I8 with a crane or the like,
It is possible to move the entire electromagnetic stirring device 17 having the above-described structure in vertical and horizontal directions.
このような構成において、溶jli12がし一ドル3か
ら鋳型5に注入された後、第2図に示すように電磁攪拌
装置17を鋳型5に外周に配置し、各コイル12.12
・・・に交流電流を供給して、回転磁界を発生させる。In such a configuration, after the molten liquid 12 is poured into the mold 5 from the droplet 3, an electromagnetic stirring device 17 is placed on the outer periphery of the mold 5 as shown in FIG.
...supplies alternating current to generate a rotating magnetic field.
これにより、鋳型5内に注入された溶鋼2が回転磁界に
よって攪拌されるので、溶鋼の温度が均一になるととも
に柱状晶が等軸晶に品質改善される。As a result, the molten steel 2 injected into the mold 5 is stirred by the rotating magnetic field, so that the temperature of the molten steel becomes uniform and the quality of columnar crystals is improved to equiaxed crystals.
「発明の効果」
以上説明したように、本発明によれば、筒状の鋳型に注
入された金属溶湯を攪拌する電磁攪拌装置において、内
周面に沿って複数のスロットが形成された筒状のコアと
、前記複数のスロットに設けられ、前記コアの内周側に
回転磁界を発生する複数のコイルと、前記コア及びコイ
ルを収納するとともに前記鋳型の外周面に対応した形状
の内周面を有する筒状のケースとを設けたので、コイル
によって発生した回転磁界によって、鋳型内に注入され
た溶鋼が攪拌され、これにより、鋳型内において溶鋼各
部の温度分布の均一化が図られるとともに柱状晶が等軸
晶に品質改善され、この結果、インゴットを分塊圧延す
る際に生じるクラックを未然に防止して歩留まりの向上
を図ることができる。"Effects of the Invention" As explained above, according to the present invention, in an electromagnetic stirring device that stirs molten metal poured into a cylindrical mold, a cylindrical mold with a plurality of slots formed along its inner circumferential surface is used. a core, a plurality of coils provided in the plurality of slots and generating a rotating magnetic field on the inner peripheral side of the core, and an inner peripheral surface that accommodates the core and the coils and has a shape corresponding to the outer peripheral surface of the mold. Since the molten steel injected into the mold is stirred by the rotating magnetic field generated by the coil, the temperature distribution of each part of the molten steel in the mold is made uniform, and the cylindrical case is The quality of the crystals is improved to equiaxed crystals, and as a result, cracks that occur during blooming of the ingot can be prevented and the yield can be improved.
第1図(イ)及び(ロ)は本発明の一実施例の構成を示
す平断面図及び正断面図、第2図は同実施例を鋳型の外
周に配置した場合の一部裁断正面図、第3図(イ)、(
ロ)、(ハ)はインゴットの製造工程を説明するための
図である。
10・・・・・・コア、 12・・・・・・コイル、
14・・・・・・ケース、 14a・・・・・・
水冷ジャケット、 14b・・・・・・カバー。Figures 1 (A) and (B) are a plan sectional view and a front sectional view showing the configuration of an embodiment of the present invention, and Figure 2 is a partially cutaway front view of the embodiment arranged around the outer periphery of a mold. , Figure 3 (a), (
B) and (C) are diagrams for explaining the ingot manufacturing process. 10...core, 12...coil,
14... Case, 14a...
Water cooling jacket, 14b...Cover.
Claims (1)
置において、内周面に沿って複数のスロットが形成され
た筒状のコアと、前記複数のスロットに設けられ、前記
コアの内周側に回転磁界を発生する複数のコイルと、前
記コア及びコイルを収納するとともに前記鋳型の外周面
に対応した形状の内周面を有する筒状のケースとを具備
することを特徴とする電磁攪拌装置。An electromagnetic stirring device that stirs molten metal poured into a cylindrical mold includes a cylindrical core having a plurality of slots formed along its inner circumferential surface, and a cylindrical core provided in the plurality of slots and an inner periphery of the core. An electromagnetic stirrer comprising: a plurality of coils that generate a rotating magnetic field on one side; and a cylindrical case that houses the core and coils and has an inner circumferential surface shaped to correspond to the outer circumferential surface of the mold. Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5512485A JPS61212463A (en) | 1985-03-19 | 1985-03-19 | Electromagnetic stirrer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5512485A JPS61212463A (en) | 1985-03-19 | 1985-03-19 | Electromagnetic stirrer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61212463A true JPS61212463A (en) | 1986-09-20 |
Family
ID=12990010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5512485A Pending JPS61212463A (en) | 1985-03-19 | 1985-03-19 | Electromagnetic stirrer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61212463A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103317106A (en) * | 2012-03-19 | 2013-09-25 | 宝山钢铁股份有限公司 | Method and device for improving casting quality of large steel ingots |
JP2018015785A (en) * | 2016-07-28 | 2018-02-01 | アイダエンジニアリング株式会社 | Metal molding manufacturing apparatus by electromagnetic stirring |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5612551B2 (en) * | 1972-06-15 | 1981-03-23 | ||
JPS5725278A (en) * | 1980-07-21 | 1982-02-10 | Nippon Kokan Kk <Nkk> | Manufacture of sound steel ingot and mold to be used for said purpose |
JPS6056000B2 (en) * | 1980-08-07 | 1985-12-07 | 三菱電機株式会社 | Equipment storage box |
-
1985
- 1985-03-19 JP JP5512485A patent/JPS61212463A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5612551B2 (en) * | 1972-06-15 | 1981-03-23 | ||
JPS5725278A (en) * | 1980-07-21 | 1982-02-10 | Nippon Kokan Kk <Nkk> | Manufacture of sound steel ingot and mold to be used for said purpose |
JPS6056000B2 (en) * | 1980-08-07 | 1985-12-07 | 三菱電機株式会社 | Equipment storage box |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103317106A (en) * | 2012-03-19 | 2013-09-25 | 宝山钢铁股份有限公司 | Method and device for improving casting quality of large steel ingots |
CN103317106B (en) * | 2012-03-19 | 2015-05-20 | 宝山钢铁股份有限公司 | Method and device for improving casting quality of large steel ingots |
JP2018015785A (en) * | 2016-07-28 | 2018-02-01 | アイダエンジニアリング株式会社 | Metal molding manufacturing apparatus by electromagnetic stirring |
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