JPH0614925Y2 - Pouring equipment - Google Patents
Pouring equipmentInfo
- Publication number
- JPH0614925Y2 JPH0614925Y2 JP1988085265U JP8526588U JPH0614925Y2 JP H0614925 Y2 JPH0614925 Y2 JP H0614925Y2 JP 1988085265 U JP1988085265 U JP 1988085265U JP 8526588 U JP8526588 U JP 8526588U JP H0614925 Y2 JPH0614925 Y2 JP H0614925Y2
- Authority
- JP
- Japan
- Prior art keywords
- stirring chamber
- flow path
- vertical flow
- molten steel
- pouring
- 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
Links
Landscapes
- Continuous Casting (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案はレードルやタンディッシュからたとえば連続鋳
造設備の鋳型内に溶鋼を注湯する注湯装置に関する。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a pouring device for pouring molten steel from a ladle or a tundish into a mold of a continuous casting facility, for example.
従来の技術 第10図に示すように、たとえばタンディッシュ41からタ
ンディッシュノズル42を介して鋳型43内に溶鋼44を注湯
する場合、均質な鋳片45を鋳造するために、鋳型43内の
湯面44aは常に一定レベルに保持する必要があり、その
ためタンディッシュノズル42からの注湯量は鋳片45の鋳
造量に等しく調節される。この注湯量を調節するものと
しては、従来からタンディッシュ41内に垂下された棒状
のストッパ46を昇降させることにより、ストッパ46の下
端部でタンディッシュノズル42の入口開口部42aの開度
を調節していた。Prior Art As shown in FIG. 10, for example, when pouring molten steel 44 into a mold 43 from a tundish 41 through a tundish nozzle 42, in order to cast a homogeneous cast piece 45, the mold 43 It is necessary to keep the molten metal surface 44a at a constant level at all times, so that the pouring amount from the tundish nozzle 42 is adjusted to be equal to the casting amount of the slab 45. As for adjusting the pouring amount, by vertically moving a rod-shaped stopper 46 hanging in the tundish 41, the opening of the inlet opening 42a of the tundish nozzle 42 is adjusted at the lower end of the stopper 46. Was.
考案が解決しようとする課題 ところが上記構成において、特に薄板連続鋳造の場合に
は鋳造量が少ないため、タンディッシュノズル42をスト
ッパ46により絞り込まねばならないきに、入口開口部42
aとストッパ46下端部の間隙が小さくなり、長時間にわ
たる鋳造中に部分的にフロックにより閉塞しやすくな
る。その対策として、一時的にストッパ46を上昇してタ
ンディッシュノズル42を全開し、フロックを除去する
が、そのため鋳型43内の湯面レベル44aが上昇して鋳造
中の鋳片45に悪影響をあたえることになる。The problem to be solved by the invention is that, in the above-mentioned configuration, especially in the case of thin plate continuous casting, since the casting amount is small, the tundish nozzle 42 must be narrowed down by the stopper 46, and the inlet opening 42
The gap between a and the lower end of the stopper 46 becomes small, and it becomes easy for the flocs to partially close during casting for a long time. As a countermeasure, the stopper 46 is temporarily raised to fully open the tundish nozzle 42 to remove the flocs, but the molten metal level 44a in the mold 43 is raised to adversely affect the cast slab 45 during casting. It will be.
本考案は上記問題を解決するもので、長時間の使用にも
ノズルが閉塞することのない注湯装置を提供することを
目的とする。The present invention solves the above problem, and an object of the present invention is to provide a pouring device in which the nozzle is not blocked even when used for a long time.
課題を解決するための手段 上記問題点を解決するために本考案は、鋳型に溶鋼を注
湯する注湯ノズルを、上部垂直流路部と、この上部垂直
流路部の下端に接続された円筒状断面の円筒垂直流路部
と、この円筒垂直流路部が上面外周部に接続された円柱
状の攪拌室と、入口が前記攪拌室内の下面軸心位置に開
口された下部垂直流路部とで構成し、少なくとも前記攪
拌室の周囲に、攪拌室内の溶鋼に攪拌室軸心を中心とす
る回転力を与える回転磁界を発生する電磁コイルを設け
たものである。Means for Solving the Problems In order to solve the above problems, the present invention has a pouring nozzle for pouring molten steel into a mold, which is connected to an upper vertical flow path portion and a lower end of the upper vertical flow path portion. A cylindrical vertical flow passage portion having a cylindrical cross section, a cylindrical stirring chamber in which the cylindrical vertical flow passage portion is connected to an outer periphery of an upper surface, and a lower vertical flow passage having an inlet opened at a lower axial position in the stirring chamber. And an electromagnetic coil for generating a rotating magnetic field that gives a rotating force to the molten steel in the stirring chamber about the shaft of the stirring chamber, at least around the stirring chamber.
作用 上記構成において、円筒垂直流路部から撹拌室内に流入
した溶鋼は、電磁コイルから発生した回転磁界の作用に
より、撹拌室の軸心を中心に回転され、その遠心力が、
攪拌室の外周部からその中心の下部垂直流路部の入口に
向かう溶鋼に作用されてその流れを阻害し、注湯ノズル
の流量を電磁コイルの磁界を調節することにより制御す
ることができる。Action In the above-mentioned configuration, the molten steel flowing into the stirring chamber from the cylindrical vertical flow path portion is rotated about the shaft center of the stirring chamber by the action of the rotating magnetic field generated from the electromagnetic coil, and its centrifugal force is
It is possible to control the flow rate of the pouring nozzle by adjusting the magnetic field of the electromagnetic coil by being acted on by the molten steel from the outer peripheral portion of the stirring chamber toward the inlet of the lower vertical flow passage portion at the center thereof to inhibit its flow.
実施例 以下本考案の実施例を第１図〜第７図に基づいて説明す
る。Embodiment An embodiment of the present invention will be described below with reference to FIGS.
第４図において、１はタンディッシュ２から一対のモー
ルドロール３と溶鋼受４とを備えた鋳型５内に溶鋼６を
注湯する注湯ノズルで、この注湯ノズル１は耐火材で形
成される。この注湯ノズル１は、第１図〜第３図に示す
ように、上端部がタンディッシュ２に接続された上部垂
直管７により形成された上部垂直流路部８と、外筒体９
および天板10ならびに中心体11とで形成されて上部垂直
流路部７の下端部から中心体11の水平分岐流路部12を介
して上部垂直流路部８に接続された円筒垂直流路部13
と、中心体11の下方で外筒体９および底板14とで円柱状
に形成された撹拌室15と、底板14から垂下されて下部垂
直管16により形成され、撹拌室15の底板14の軸心位置に
入口17aが開口する下部垂直流路部17とで構成される。
そして、上部垂直流路部８，円筒垂直流路部13，撹拌室
15，下部垂直流路部17はそれぞれ鉛直方向の同一軸心Ａ
状に配置される。この注湯ノズル１は第５図に示すよう
に、上部垂直管７の下端部に天板10と、水平分岐流路部
12が形成された中心体11とからなる成形体に、下部垂直
管16が連結固定された底板14および外筒体９を外嵌して
組み立てられる。In FIG. 4, reference numeral 1 is a pouring nozzle for pouring molten steel 6 from a tundish 2 into a mold 5 having a pair of mold rolls 3 and a molten steel receiver 4. The pouring nozzle 1 is made of a refractory material. It As shown in FIGS. 1 to 3, the pouring nozzle 1 includes an upper vertical flow path portion 8 formed by an upper vertical pipe 7 having an upper end portion connected to the tundish 2, and an outer cylindrical body 9.
And a top plate 10 and a central body 11 and connected to the upper vertical flow passage 8 from the lower end of the upper vertical flow passage 7 through the horizontal branch flow passage 12 of the central body 11. Part 13
And a stirring chamber 15 formed in a cylindrical shape with the outer cylinder body 9 and the bottom plate 14 below the central body 11, and a lower vertical pipe 16 hanging from the bottom plate 14 to form an axis of the bottom plate 14 of the stirring chamber 15. It is composed of a lower vertical flow path portion 17 having an inlet 17a opened at the center position.
Then, the upper vertical flow passage 8, the cylindrical vertical flow passage 13, the stirring chamber
15 and the lower vertical flow path portion 17 have the same vertical axis A, respectively.
Arranged. As shown in FIG. 5, this pouring nozzle 1 has a top plate 10 at the lower end of an upper vertical pipe 7 and a horizontal branch flow passage part.
A bottom plate 14 to which a lower vertical pipe 16 is fixedly connected and an outer cylinder body 9 are externally fitted and assembled to a molded body including a central body 11 in which 12 is formed.
18は撹拌室15の外筒体９外周に配設された電磁コイル
で、撹拌室15の軸心Ａを水平方向に横切る回転磁界を形
成し、撹拌室15内の溶鋼６にうず電流を発生させて、第
２図，第３図に示すように、軸心Ａを中心とする時計方
向イまたは反時計方向ロの回転力を発生させる。これに
より撹拌室15内の溶鋼６は軸心Ａを中心に回転され、そ
の遠心力Ｆにより外側の円筒垂直流路部13側に押され
る。すなわち、底板14に形成された下部垂直流路部17の
入口17aから遠ざかる方向に遠心力Ｆが加わるため、円
筒垂直流路部13から入口17aへの溶鋼６の流れが阻害さ
れる。したがって、電磁コイル18の磁界の密度や回転速
度を調節することにより、注湯ノズル１の注湯量を調節
することができる。Reference numeral 18 denotes an electromagnetic coil arranged on the outer circumference of the outer cylinder 9 of the stirring chamber 15, which forms a rotating magnetic field that horizontally crosses the axis A of the stirring chamber 15 and generates an eddy current in the molten steel 6 in the stirring chamber 15. Then, as shown in FIGS. 2 and 3, a rotational force of a clockwise direction a or a counterclockwise direction b centering on the axis A is generated. As a result, the molten steel 6 in the stirring chamber 15 is rotated about the axis A and is pushed toward the outer cylindrical vertical flow path portion 13 side by its centrifugal force F. That is, since the centrifugal force F is applied in the direction away from the inlet 17a of the lower vertical flow passage portion 17 formed in the bottom plate 14, the flow of the molten steel 6 from the cylindrical vertical flow passage portion 13 to the inlet 17a is obstructed. Therefore, the pouring amount of the pouring nozzle 1 can be adjusted by adjusting the density and rotation speed of the magnetic field of the electromagnetic coil 18.
この基本原理を第６図および第７図により説明する。円
柱状の導体（溶鋼）21の外周部にＮ，Ｓ一対の磁石22A,
22Bを矢印ハ方向に回転すれば、導体21を横切る磁束23
により、導体21にうず電流24による電流ｉが発生し、こ
の電流ｉが磁束23を下方に横切ると、フレミングの左手
の法則により、磁石22A,22Bの回転方向である矢印ハ方
向と同方向の力Ｂが発生し、導体21は磁石と同一方向に
回転されることになる。このような回転磁界は誘導電動
機と同じ原理で作ることができる。このように撹拌室15
内の溶鋼６を回転させて、撹拌室15中央の圧力を減少さ
せることにより、下部垂直管16を通して溶鋼６を吸い上
げる電磁ポンプの効果を期待できる。This basic principle will be described with reference to FIGS. 6 and 7. A pair of N and S magnets 22A, on the outer peripheral portion of the cylindrical conductor (molten steel) 21,
If you rotate 22B in the direction of arrow c, magnetic flux 23
As a result, a current i is generated by the eddy current 24 in the conductor 21, and when this current i crosses the magnetic flux 23 downward, the direction of the arrow C, which is the rotational direction of the magnets 22A and 22B, is the same as the direction of arrow C, which is the rotation direction of the magnets 22A and 22B, according to Fleming's left hand rule. A force B is generated and the conductor 21 is rotated in the same direction as the magnet. Such a rotating magnetic field can be created by the same principle as an induction motor. In this way, the stirring chamber 15
By rotating the molten steel 6 inside to reduce the pressure in the center of the stirring chamber 15, the effect of an electromagnetic pump for sucking the molten steel 6 through the lower vertical pipe 16 can be expected.
第８図および第９図に示すものは他の実施例を示し、撹
拌室32に耐火材からなる４枚の案内翼33を設けたもので
ある。この案内翼33は、上端部が中心体11の下面に形成
した取付溝34に嵌入固定されるとともに、下端部が底板
14に形成した取付溝35に嵌入固定され、底板14軸心Ａ位
置に形成された下部垂直流路部17の円形状入口17a近傍
からその接線方向の一方（図では右方向のみ）に沿って
配設される。したがって、電磁コイル18によって反時計
方向ロに回転されて溶鋼６は、案内翼33によって入口17
a側に案内されてこの注湯ノズル31内を通過する溶鋼６
の流速が増加される。これは注湯初期に溶鋼受４内の一
定レベルまで速く注湯したい時に有効に利用できる。こ
れに対して、電磁コイル18により時計方向イに回転され
た溶鋼６は、案内翼により効果的に外周側に案内されて
注湯ノズル１の溶鋼６の流れを大きく阻害し、その流量
を効果的に絞ることができる。なお、この実施例の電磁
コイル18は円筒垂直流路部13の下部にまで作用するよう
に配設されている。また、案内翼33を第９図に仮想線で
示すように湾曲させてもよい。FIGS. 8 and 9 show another embodiment in which the stirring chamber 32 is provided with four guide blades 33 made of a refractory material. The guide blade 33 has an upper end fitted and fixed in a mounting groove 34 formed on the lower surface of the central body 11, and a lower end having a bottom plate.
Around the circular inlet 17a of the lower vertical flow path portion 17 formed at the axial center A position of the bottom plate 14 that is fitted and fixed in the mounting groove 35 formed in 14 along one of its tangential directions (only the right direction in the figure). It is arranged. Therefore, the molten steel 6 is rotated counterclockwise by the electromagnetic coil 18 and the molten steel 6 is guided to the inlet 17 by the guide vanes 33.
Molten steel 6 which is guided to the a side and passes through this pouring nozzle 31
The flow rate of is increased. This can be effectively used when it is desired to quickly pour the molten steel to a certain level in the molten steel receiver 4 at the beginning of the pour. On the other hand, the molten steel 6 rotated clockwise by the electromagnetic coil 18 is effectively guided to the outer peripheral side by the guide vanes and greatly impedes the flow of the molten steel 6 in the pouring nozzle 1, and the flow rate thereof is reduced. Can be narrowed down. The electromagnetic coil 18 of this embodiment is arranged so as to act even under the cylindrical vertical flow path portion 13. Further, the guide vanes 33 may be curved as shown in phantom in FIG.
考案の効果 以上に述べたごとく本考案によれば、円筒垂直流路部か
ら撹拌室内に流入した溶鋼を、電磁コイルから発生した
回転磁界の作用により撹拌室の軸心を中心に回転させ、
その遠心力により、軸心位置に開口する下部垂直流路部
の入口に向かう溶鋼の流れを阻害することができ、電磁
コイルの回転磁界を調節することにより注湯ノズルの流
量を調節することができる。したがって、従来の注湯装
置のように溶鋼の流入口の間隙を調節することがないの
で、フロックなどによる閉塞のおそれもなく、長時間の
注湯ノズルの使用も可能となる。Effects of the Invention According to the present invention as described above, the molten steel flowing into the stirring chamber from the cylindrical vertical flow path is rotated about the axis of the stirring chamber by the action of the rotating magnetic field generated from the electromagnetic coil,
The centrifugal force can block the flow of molten steel toward the inlet of the lower vertical flow path opening at the axial center position, and the flow rate of the pouring nozzle can be adjusted by adjusting the rotating magnetic field of the electromagnetic coil. it can. Therefore, unlike the conventional pouring device, the gap of the molten steel inflow port is not adjusted, so that there is no fear of blockage due to flock or the like, and the pouring nozzle can be used for a long time.
第１図〜第７図は本考案の一実施例を示し、第１図は要
部の縦断面図、第２図は第１図に示すＩ−Ｉ断面図、第
３図は溶鋼の流路を示す斜視図、第４図は注湯装置の全
体側面図、第５図は要部の分解斜視図、第６図および第
７図はそれぞれ磁界の作用説明図、第８図および第９図
は他の実施例を示し、第８図は要部縦断面図、第９図は
第８図に示すII-II断面図、第10図は従来の注湯装置を
示す側面断面図である。 １……注湯ノズル、５……鋳型、６……溶鋼、８……上
部垂直流路部、13……円筒垂直流路部、15……撹拌室、
17……下部垂直流路部、18……電磁コイル。1 to 7 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part, FIG. 2 is a sectional view taken along line I-I shown in FIG. 1, and FIG. 3 is a flow chart of molten steel. FIG. 4 is a perspective view showing the passage, FIG. 4 is an overall side view of the pouring device, FIG. 5 is an exploded perspective view of essential parts, and FIGS. 6 and 7 are explanatory views of the action of a magnetic field, respectively, and FIGS. FIG. 8 shows another embodiment, FIG. 8 is a longitudinal sectional view of an essential part, FIG. 9 is a sectional view taken along line II-II shown in FIG. 8, and FIG. 10 is a side sectional view showing a conventional pouring device. . 1 ... Pouring nozzle, 5 ... Mold, 6 ... Molten steel, 8 ... Upper vertical flow passage, 13 ... Cylindrical vertical flow passage, 15 ... Stirring chamber,
17 …… Lower vertical flow path, 18 …… Electromagnetic coil.
Claims (1)
垂直流路部と、この上部垂直流路部の下端に接続された
円筒状断面の円筒垂直流路部と、この円筒垂直流路部が
上面外周部に接続された円柱状の攪拌室と、入口が前記
攪拌室内の下面軸心位置に開口された下部垂直流路部と
で構成し、少なくとも前記攪拌室の周囲に、攪拌室内の
溶鋼に攪拌室軸心を中心とする回転力を与える回転磁界
を発生する電磁コイルを設けたことを特徴とする注湯装
置。1. A pouring nozzle for pouring molten steel into a mold, an upper vertical flow path section, a cylindrical vertical flow path section having a cylindrical cross section connected to a lower end of the upper vertical flow path section, and the cylindrical vertical flow path section. A column-shaped stirring chamber in which the flow path portion is connected to the outer peripheral surface of the upper surface, and an inlet including a lower vertical flow path portion opened at the lower surface axial center position in the stirring chamber, at least around the stirring chamber, A pouring device comprising: an electromagnetic coil for generating a rotating magnetic field that imparts a rotating force about the axis of the stirring chamber to the molten steel in the stirring chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988085265U JPH0614925Y2 (en) | 1988-06-28 | 1988-06-28 | Pouring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988085265U JPH0614925Y2 (en) | 1988-06-28 | 1988-06-28 | Pouring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH026146U JPH026146U (en) | 1990-01-16 |
| JPH0614925Y2 true JPH0614925Y2 (en) | 1994-04-20 |
Family
ID=31309939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988085265U Expired - Lifetime JPH0614925Y2 (en) | 1988-06-28 | 1988-06-28 | Pouring equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614925Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5379643B2 (en) * | 2009-10-26 | 2013-12-25 | 株式会社神戸製鋼所 | Continuous casting method and nozzle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822317A (en) * | 1981-07-29 | 1983-02-09 | Godo Seitetsu Kk | Method for removing non-metallic inclusions from molten steel |
-
1988
- 1988-06-28 JP JP1988085265U patent/JPH0614925Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH026146U (en) | 1990-01-16 |
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