JPS62227551A - Method and apparatus for continuous casting - Google Patents
Method and apparatus for continuous castingInfo
- Publication number
- JPS62227551A JPS62227551A JP6977486A JP6977486A JPS62227551A JP S62227551 A JPS62227551 A JP S62227551A JP 6977486 A JP6977486 A JP 6977486A JP 6977486 A JP6977486 A JP 6977486A JP S62227551 A JPS62227551 A JP S62227551A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- control rod
- nozzle
- metal surface
- crucible
- 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
- 238000009749 continuous casting Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- 239000002184 metal Substances 0.000 claims abstract description 48
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 239000011819 refractory material Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000006698 induction Effects 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 7
- 239000000155 melt Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は連続鋳造時における湯面および温度の制御方法
と装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and apparatus for controlling the molten metal level and temperature during continuous casting.
〈従来の技術〉
鋳塊の連続鋳造については本願発明者の一名が特公昭５
５−４６２６５号公報に開示したが、鋳造物を連続して
安定に供給するためには溶湯の表面の高さや溶湯の湯度
を制御することも極めて重要なことである。<Prior art> Regarding continuous casting of ingots, one of the inventors of the present application disclosed
As disclosed in Japanese Patent No. 5-46265, it is extremely important to control the surface height of the molten metal and the temperature of the molten metal in order to continuously and stably supply castings.
〈発明が解決しようとする問題点〉
鋳塊を連続的に鋳造する場合、溶湯の表面がノズルの位
置よシ高い場合にはノズルの出口で未凝固のまま溶鋼が
飛び出す所謂ブレークアウトを生じ、また低い場合には
溶湯がノズルに対して十分供給されず正常な鋳片が得ら
れない。<Problems to be solved by the invention> When ingots are continuously cast, if the surface of the molten metal is higher than the nozzle position, a so-called breakout occurs in which unsolidified molten steel jumps out at the nozzle outlet. Moreover, if it is low, the molten metal will not be sufficiently supplied to the nozzle and a normal slab will not be obtained.
一方、溶湯の温度が低い場合にはノズル閉塞を起し、逆
に高い場合にはノズル出口でブレークアウトを生じ安定
した連続鋳造を行えない。On the other hand, if the temperature of the molten metal is low, nozzle clogging occurs, and if it is high, breakout occurs at the nozzle outlet, making stable continuous casting impossible.
く問題を解決するための手段とその作用〉そこで本発明
は湯面および温度の制御方法として電磁誘導加熱源を有
するルツボの中の溶湯に湯面制御棒を没入して、鋳塊の
供給が減少したときは制御棒を溶湯内に深く侵入せしめ
、供給が過剰になった場合には制御棒をこれに応じて上
昇せしめて湯面を常にノズルの出口に一致せしめること
が肝要である。溶湯の温度はルツボに加えられる電磁誘
導加熱による熱量により制御されるが溶湯の減少は誘導
加熱を困難にし。Means for Solving the Problems and Their Effects> Therefore, the present invention provides a method for controlling the melt level and temperature by immersing a melt level control rod into the molten metal in a crucible having an electromagnetic induction heating source to control the supply of ingots. It is important to move the control rod deeper into the molten metal when the supply decreases, and to raise the control rod accordingly when the supply becomes excessive so that the melt level always matches the nozzle outlet. The temperature of the molten metal is controlled by the amount of heat added to the crucible by electromagnetic induction heating, but the reduction in molten metal makes induction heating difficult.
溶湯の温度が所定の温度に達せず、多量の溶鋼を残すこ
ととなる。本発明はこの欠点を改善するため制御棒を電
磁誘導により加熱して溶湯量が減少しても温度が下らず
、溶湯が一様にできて連続鋳造が安定して出来るように
したものである。即ち本発明は電磁誘導を熱源とするル
ツボに鋳塊を投入し、前記ルツボの側壁からノズルを介
して溶湯を流出せしめる金属鋳塊の鋳造方法において、
電磁誘導により発熱する湯面制御棒を溶湯内に上下せし
めることにより湯面並びに溶湯の温度を制御する方法と
装置を提供するものである。The temperature of the molten metal does not reach a predetermined temperature, leaving a large amount of molten steel. In order to improve this drawback, the present invention heats the control rod by electromagnetic induction so that the temperature does not drop even when the amount of molten metal decreases, and the molten metal is made uniformly, allowing continuous casting to be performed stably. be. That is, the present invention provides a metal ingot casting method in which an ingot is placed in a crucible using electromagnetic induction as a heat source, and the molten metal is caused to flow out from the side wall of the crucible through a nozzle.
The present invention provides a method and apparatus for controlling the molten metal surface and the temperature of the molten metal by moving a molten metal level control rod that generates heat by electromagnetic induction up and down into the molten metal.
〈実施例〉
第１図は本発明による連続鋳造方法に用いるミナ質の耐
火物で被ったものである。２は上部が開口した筒状のル
ツボで鋳塊を投入し図示しない高周波発振器の出力を前
記ルツボの外周をとりまく誘導加熱コイルに供給し、鋳
塊を徐々に溶融し溶湯３とする。図は溶湯３の表面がノ
ズルの出口より僅かに高い位置にあってほぼ正常の状態
にあることを示す。ノズル４の出口から流出する溶湯は
該ノズルの外周を被う高周波コイルにより生ずる電磁誘
導によってさらに加熱されノズルの出口において停滞す
ることなく放出され、冷却水５によって冷却され鋳造片
７となって引抜きロール６によって引き出される。<Example> Fig. 1 shows a case covered with a miner refractory used in the continuous casting method according to the present invention. Reference numeral 2 denotes a cylindrical crucible with an open top, into which an ingot is placed, and the output of a high-frequency oscillator (not shown) is supplied to an induction heating coil surrounding the outer periphery of the crucible, thereby gradually melting the ingot into molten metal 3. The figure shows that the surface of the molten metal 3 is at a position slightly higher than the outlet of the nozzle and is in a substantially normal state. The molten metal flowing out from the outlet of the nozzle 4 is further heated by electromagnetic induction generated by a high-frequency coil covering the outer periphery of the nozzle, and is discharged without stagnation at the outlet of the nozzle, cooled by cooling water 5, turned into a cast piece 7, and drawn out. It is pulled out by roll 6.
今、鋳塊の投入量が減少するときは吊シ具９によって溶
湯中に没入されている湯面制御棒が更に深く没入し、湯
面を常に一定に保持するように制御される。またルツボ
開口よシ投入される鋳塊の量が過剰になれば制御棒１は
上昇するように制御され、従って何れの場合も湯面が略
々一定に保たれるようになる。溶湯が減少して湯面が低
下し高周波出力が減少しても制御棒内の導体即ちカーボ
ンが電磁誘導により加熱されているため制御棒は加熱し
、これに接する溶湯も伝導加熱され溶湯の温度を一定に
保つことができる。Now, when the amount of ingot input decreases, the level control rod immersed in the molten metal is immersed deeper by the hanging tool 9, and the level is controlled so as to always maintain a constant level. Further, if the amount of ingots thrown into the crucible opening becomes excessive, the control rod 1 is controlled to rise, so that the molten metal level is kept approximately constant in any case. Even if the molten metal decreases, the level of the molten metal decreases, and the high-frequency output decreases, the conductor in the control rod, that is, the carbon, is heated by electromagnetic induction, so the control rod heats up, and the molten metal in contact with it is also conductively heated, causing the temperature of the molten metal to decrease. can be kept constant.
〈発明の効果〉
以上説明したように本発明によれば、ルツボに投入され
る鋳塊の量の変動に拘らず湯面と溶湯の温度は何れも一
定に保たれ、ノズルから鋳造片を一定の速度で安定して
引き出すことができる。<Effects of the Invention> As explained above, according to the present invention, both the surface and temperature of the molten metal are kept constant regardless of fluctuations in the amount of ingots charged into the crucible, and the cast pieces are kept constant from the nozzle. It can be withdrawn stably at a speed of
第１図は本発明による連続鋳造装置の概略断面図、第２
図はその湯面制御棒の断面図を示す。
図においてFig. 1 is a schematic sectional view of a continuous casting apparatus according to the present invention;
The figure shows a cross-sectional view of the hot water level control rod. In the figure
Claims (1)
ルツボの側壁からノズルを介して溶湯を流出せしめる金
属鋳塊の鋳造方法において電磁誘導により発熱する湯面
制御棒を溶湯内に上下せしめることにより湯面並びに溶
湯の温度を制御することを特徴とする連続鋳造方法。 ２）電磁誘導を熱源とするルツボの側壁に溶湯を流出せ
しめるノズルを設け、且つ前記電磁誘導により発熱する
制御棒をルツボ内に上下せしめることを特徴とする連続
鋳造装置。 ３）制御棒は内部にカーボンを配し、外側を耐火物で被
った特許請求の範囲第２項記載の連続鋳造装置。[Scope of Claims] 1) Molten metal level control that generates heat by electromagnetic induction in a metal ingot casting method in which an ingot is placed in a crucible that uses electromagnetic induction as a heat source, and the molten metal flows out from the side wall of the crucible through a nozzle. A continuous casting method characterized by controlling the surface and temperature of the molten metal by moving a rod up and down into the molten metal. 2) A continuous casting apparatus characterized in that a nozzle for causing molten metal to flow out is provided on the side wall of a crucible using electromagnetic induction as a heat source, and a control rod that generates heat due to electromagnetic induction is moved up and down into the crucible. 3) The continuous casting apparatus according to claim 2, wherein the control rod has carbon arranged inside and covered with a refractory material on the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6977486A JPS62227551A (en) | 1986-03-29 | 1986-03-29 | Method and apparatus for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6977486A JPS62227551A (en) | 1986-03-29 | 1986-03-29 | Method and apparatus for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62227551A true JPS62227551A (en) | 1987-10-06 |
Family
ID=13412468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6977486A Pending JPS62227551A (en) | 1986-03-29 | 1986-03-29 | Method and apparatus for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5244034A (en) * | 1989-11-30 | 1993-09-14 | Showa Electric Wire & Cable Co., Ltd. | Electromagnetic levitation type continuous metal casting |
-
1986
- 1986-03-29 JP JP6977486A patent/JPS62227551A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5244034A (en) * | 1989-11-30 | 1993-09-14 | Showa Electric Wire & Cable Co., Ltd. | Electromagnetic levitation type continuous metal casting |
| US5341867A (en) * | 1989-11-30 | 1994-08-30 | Showa Electric Wire & Cable Co., Ltd. | Electromagnetic levitation type continuous metal casting apparatus |
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