JPH0890215A - Method for improving yield of molten metal at the time of flowing out of molten metal - Google Patents
Method for improving yield of molten metal at the time of flowing out of molten metalInfo
- Publication number
- JPH0890215A JPH0890215A JP24681794A JP24681794A JPH0890215A JP H0890215 A JPH0890215 A JP H0890215A JP 24681794 A JP24681794 A JP 24681794A JP 24681794 A JP24681794 A JP 24681794A JP H0890215 A JPH0890215 A JP H0890215A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- slag
- outflow
- receiving container
- container
- 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.)
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Links
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- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は溶鋼等の溶融金属を溶融
金属収容容器から他の受け容器への移送、流出時におけ
る溶融金属歩留り向上に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molten metal yield improvement when a molten metal such as molten steel is transferred from a molten metal container to another receiving container and flows out.
【０００２】[0002]
【従来の技術】従来、流出中の溶融金属へのスラグ混入
を検知する方法としては、例えば特開昭５９−６５２８
０に示されるように、金属湯道管の外周に取り付けられ
た電磁コイルに、保護管の周りに、保護管と同軸に巻き
付けた複数の巻線を持たせることにより、湯道内のスラ
グの出現を検知する方法がある。また特開昭６１−２６
２４５４では、注入容器から受け容器に浸漬ノズルによ
って溶融金属を流出する際に、浸漬ノズルの内部圧力を
連続的に測定し、その圧力変化を検知することによりス
ラグの流出を正確に把握し、溶融金属の流出量を制御す
る方法が記述されている。2. Description of the Related Art Conventionally, as a method for detecting slag inclusion in molten metal flowing out, for example, Japanese Patent Laid-Open No. 59-6528.
As shown in 0, the electromagnetic coil attached to the outer periphery of the metal runner tube has a plurality of windings wound around the protection tube coaxially with the protection tube, so that slag appears in the runner. There is a method of detecting. Also, JP-A-61-26
In 2454, when the molten metal is flown from the pouring container to the receiving container by the dipping nozzle, the internal pressure of the dipping nozzle is continuously measured, and the change in the pressure is detected to accurately grasp the outflow of the slag and melt the molten metal. A method of controlling metal runoff is described.
【０００３】[0003]
【発明が解決しようとする課題】前記した従来技術は、
次の如き問題点を有する。 溶融金属収容容器下部から浸漬ノズルを介して受け容
器に溶融金属を流出する場合は、溶融金属に比べ比重の
軽いスラグは収容容器内で溶融金属表面で浮遊している
が、流出末期近くになると浸漬ノズルの流出口近傍にで
きた渦流のため、スラグが渦に巻き込まれ、溶融金属中
に混入してノズルから流出する。このため、溶融金属の
流出が完全に終了する以前に、混入したスラグをスラグ
検知器が検知し、この信号によってスライディングノズ
ルあるいはストッパー等の流出量調整装置が閉止操作を
行い、溶融金属の流出を停止し作業を終了する。従って
収容容器内に溶融金属の一部が流出せずに残ってしまう
ため、受け容器への溶融金属の流出歩留りが低下する。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
It has the following problems. When the molten metal flows out from the lower part of the molten metal container to the receiving container through the immersion nozzle, the slag, which has a lower specific gravity than the molten metal, floats on the surface of the molten metal in the container, but near the end of the outflow. Due to the vortex flow formed near the outlet of the immersion nozzle, the slag is caught in the vortex, mixes in the molten metal, and flows out from the nozzle. For this reason, the slag detector detects the mixed slag before the outflow of the molten metal is completely completed, and the outflow amount adjusting device such as a sliding nozzle or a stopper performs a closing operation by this signal to prevent the outflow of the molten metal. Stop and finish the work. Therefore, a part of the molten metal remains in the receiving container without flowing out, and the yield of the molten metal flowing into the receiving container is reduced.
【０００４】また、受け容器へ流出される溶融金属の
流出歩留り向上のため、スラグ検知器でスラグを検知し
たときから、一定時間経過後に流出量調整装置を全閉し
て流出を終了する方法、あるいは、スラグ検知器のスラ
グ検知感度を落とす方法等も考えられるが、いずれも受
け容器へ流出するスラグが増加するため、溶融金属の清
浄性が低下する。In order to improve the outflow yield of the molten metal flowing out to the receiving container, a method of completely closing the outflow amount adjusting device after a lapse of a certain time from the time when the slag detector detects the slag, and ending the outflow, Alternatively, a method of lowering the slag detection sensitivity of the slag detector may be considered, but in both cases, the slag flowing out to the receiving container increases, so that the cleanliness of the molten metal deteriorates.
【０００５】さらに、収容容器内で流出末期の浸漬ノ
ズル流出口近傍で発生する渦の生成を抑制するため、浸
漬ノズルを通常の円形断面から楕円形断面に変えて溶融
金属を流出する方法も考えられる。しかしこの方法では
浸漬ノズルの耐久性が低下するため、長時間に渡り使用
することは難しくなるため、工業的に使用することは難
しい。Further, in order to suppress the generation of vortices generated near the outlet of the immersion nozzle in the final stage of the outflow in the container, a method of changing the immersion nozzle from an ordinary circular cross section to an elliptical cross section and flowing out the molten metal is also considered. To be However, in this method, the durability of the dipping nozzle is lowered, and it is difficult to use it for a long time, and therefore it is difficult to use it industrially.
【０００６】[0006]
【課題を解決するための手段】本発明は、上記課題を解
決するためになされたもので、その要旨とするところ
は、１）溶融金属収容容器から、他の溶融金属受け容器
内へ溶融金属を流出する際に、受け容器への流出溶融金
属中に混入するスラグをスラグ検知器で検知し、その時
点で収容容器の流出量調整装置を閉止し、受け容器への
溶融金属流出を中断して、収容容器内の溶融金属中に混
入されているスラグを収容容器内の溶融金属表面に浮上
させ、所定時間経過後前記流出量調整装置を再び開き、
再度受け容器内へ溶融金属を流出する操作を１回以上行
うことを特徴とする溶融金属流出時の溶融金属歩留り向
上方法。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist thereof is: 1) Molten metal receiving container into another molten metal receiving container. When the slag is discharged, the slag that is mixed in the molten metal flowing out to the receiving container is detected by the slag detector, at which point the outflow amount adjusting device of the storage container is closed, and the molten metal outflow to the receiving container is interrupted. The slag mixed in the molten metal in the storage container is floated on the surface of the molten metal in the storage container, and the outflow amount adjusting device is reopened after a predetermined time has passed,
A method of improving the yield of molten metal at the time of molten metal outflow, wherein the operation of outflowing the molten metal into the receiving container again is performed once or more.
【０００７】２）溶融金属収容容器から、他の溶融金属
受け容器内へ溶融金属を流出する際に、受け容器への流
出溶融金属中に混入するスラグを検知し、その時点から
収容容器の流出量調整装置の開度を絞り込み、受け容器
への溶融金属の流出量を減少させて、収容容器内の溶融
金属中に混入されているスラグを収容容器内の溶融金属
表面に浮上させた後、前記流出量調整装置で流出量を再
び増加して受け容器内へ溶融金属を流出する操作を１回
以上行うことを特徴とする溶融金属流出時の溶融金属歩
留り向上方法。2) When the molten metal is discharged from the molten metal receiving container into another molten metal receiving container, slag mixed in the molten metal flowing out to the receiving container is detected, and the flowing out of the receiving container is started from that point. After narrowing the opening of the amount adjusting device, reducing the outflow amount of the molten metal to the receiving container, after the slag mixed in the molten metal in the receiving container is floated on the molten metal surface in the receiving container, A method of improving the yield of molten metal at the time of molten metal outflow, wherein the operation of increasing the outflow amount again by the outflow amount adjusting device and flowing out the molten metal into the receiving container is performed once or more.
【０００８】３）、１）又は２）に加えて再度受け容器
への溶融金属を流出又は増加した後、流出溶融金属中に
混入するスラグをスラグ検知器での検知の有無に拘ら
ず、タイマーによって流量調整装置を全閉にするか、又
はその開度を絞り込むことを特徴とする溶融金属流出時
の溶融金属歩留り向上方法にある。3) In addition to 1) or 2), after the molten metal is reflowed or increased into the receiving container again, the slag mixed in the outflowing molten metal is detected by the timer regardless of whether the slag detector detects it. There is a method for improving the yield of molten metal at the time of molten metal outflow, which is characterized in that the flow rate adjusting device is fully closed or the opening thereof is narrowed.
【０００９】[0009]
【作用】図１は本発明によるスラグの混入を防止するた
めの流出制御装置の一例を示したものであり、溶融金属
収容容器１、浸漬ノズル２、受け容器３から構成され、
さらに収容容器下部には受け容器に流出する溶融金属の
流出量を調整制御するための流出量調整装置（以下スラ
イディングノズル（ＳＮ）で代表する）５から構成され
ている。ＳＮ５は、スラグセンサー（スラグ検知器）
４、スラグセンサー制御盤６、プロセスコンピューター
７、ＳＮ位置検出器８から構成されている。なお本例で
はスラグセンサー４は溶融金属に対して同心円状に２つ
のコイルを置いた構造のものを用いた。この構造は、一
方のコイルに電流を流し、もう一方のコイルに発生する
誘導起電力を測定することでスラグ混入の検知を行うも
のである。FIG. 1 shows an example of an outflow control device for preventing the mixing of slag according to the present invention, which comprises a molten metal container 1, a dipping nozzle 2 and a receiving container 3.
Further, an outflow amount adjusting device (hereinafter represented by a sliding nozzle (SN)) 5 for adjusting and controlling the outflow amount of the molten metal flowing out to the receiving container is formed in the lower portion of the storage container. SN5 is a slag sensor (slag detector)
4, a slag sensor control panel 6, a process computer 7, and an SN position detector 8. In this example, the slag sensor 4 has a structure in which two coils are placed concentrically with respect to the molten metal. With this structure, a current is passed through one coil and the induced electromotive force generated in the other coil is measured to detect the inclusion of slag.
【００１０】以上のような構成装置を用いてスラグ混入
を制御する方法について説明する。図２は本発明による
流出制御のフローの一例を示したもので、図３はその場
合のＳＮ開度操作図である。溶融金属収容容器内の溶融
金属の受け容器への流出末期にスラグセンサーによって
スラグ混入を検知すると、ＳＮの閉動作を開始しＳＮを
閉め、受け容器への溶融金属の流出を停止する。A method for controlling slag mixture using the above-described apparatus will be described. FIG. 2 shows an example of a flow of outflow control according to the present invention, and FIG. 3 is an SN opening operation diagram in that case. When slag mixing is detected by the slag sensor at the end of the outflow of the molten metal in the molten metal container to the receiving container, the closing operation of SN is started and SN is closed, and the outflow of the molten metal to the receiving container is stopped.
【００１１】流出が停止するとＳＮ流出口付近で溶融金
属中に巻き込まれたスラグは比重が溶融金属より小さい
ため、収容容器内の溶融金属表面まで浮上する。一方、
ＳＮには予めタイマーが接続されており、ＳＮの長時間
閉塞による溶融金属温度低下で溶融金属が凝固し、ＳＮ
のスライドが不能にならず、かつ巻き込まれたスラグが
溶融金属表面に充分に浮上するタイミングで、一定時間
（Ｔ１）経過後に再びＳＮを開け、収容容器内の溶融金
属の受け容器への流出を再び開始する。When the outflow is stopped, the slag caught in the molten metal near the SN outlet has a specific gravity smaller than that of the molten metal, and therefore floats up to the surface of the molten metal in the container. on the other hand,
A timer is connected to the SN in advance, and the molten metal solidifies due to the temperature drop of the molten metal due to the SN being blocked for a long time.
Slide is not disabled, and the slag that has been caught up is sufficiently floated on the surface of the molten metal, the SN is opened again after a certain time (T1) has elapsed, and the molten metal in the storage container is allowed to flow out to the receiving container. Start again.
【００１２】この場合にＳＮを直ちに全開すると溶融金
属表面に浮遊するスラグが溶融金属中に再び巻き込まれ
てしまうので、ＳＮの開度位置検出器を用い予め設定し
た少量の開度（θ＝Ｘ）で溶融金属を再度流出する。な
お、ＳＮの開度位置検出器によらず、タイマーによって
一定時間（Ｔ２）後にＳＮの動きを停止させる開度設定
方法でもよい。その後再びスラグセンサーでスラグの混
入を検知すると前記作動と同様の操作を行い、ＳＮをま
た閉めて受け容器への溶融金属の流出を停止する。この
ようなＳＮ開閉操作回数はカウンターによっても設定可
能であり、溶融金属の種類、流出速度等によっても変え
ることができる。In this case, if the SN is fully opened immediately, the slag floating on the surface of the molten metal will be re-engaged in the molten metal. Therefore, a small opening (θ = X) preset by using the SN opening position detector is used. ), The molten metal is discharged again. Note that an opening setting method may be used in which the movement of the SN is stopped after a certain time (T2) by a timer instead of using the opening position detector of the SN. After that, when the slag sensor again detects the mixture of slag, the same operation as that described above is performed, SN is closed again, and the outflow of the molten metal into the receiving container is stopped. The number of such SN opening / closing operations can be set by a counter, and can be changed by the kind of molten metal, the outflow rate, and the like.
【００１３】なお、本発明においては、図４と図５に示
した制御フローとＳＮ開度の操作図の如く、スラグセン
サーによってスラグを検知し、ＳＮを閉じる方向に作動
させる場合に、ＳＮの開度位置検出器を用いて開度（θ
＝Ｙ）を予め設定し、ＳＮを全閉にせず、僅かに開け
て、溶融金属の流出量を極端に減らすことにより、スラ
グを溶融金属表面に浮上させるに要する一定時間（Ｔ
１）を前記タイマーによって確保し、その後、再度開
け、この操作を繰り返し最終的に受け容器への流出を終
了する時にＳＮを全閉させる方法も採用する。このよう
にすると、ＳＮを全閉後に再度開ける場合に比べ、溶融
金属の流出を途中で停止しないため、温度低下に伴う溶
融金属の凝固がなく、ＳＮの閉塞する可能性が低く、溶
融金属の流出をより確実に実施することができる。In the present invention, when the slag is detected by the slag sensor and the SN is actuated in the closing direction as shown in the control flow and the operation diagram of the SN opening shown in FIGS. Opening position (θ
= Y) is preset and the SN is not fully closed but is slightly opened to extremely reduce the outflow amount of the molten metal, and thereby the fixed time (T
A method is also adopted in which 1) is secured by the timer, then opened again, and this operation is repeated to finally close the SN when the outflow to the receiving container is finally completed. By doing so, as compared with the case where the SN is reopened after being fully closed, the outflow of the molten metal is not stopped halfway, so there is no solidification of the molten metal due to the temperature decrease, the possibility of clogging the SN is low, and Outflow can be carried out more reliably.
【００１４】また、図６と図７に示した制御フローとＳ
Ｎ開度操作図の如く、タイマーによって一定時間後にＳ
Ｎを再度開けて溶融金属を再流出する際に、スラグセン
サーがスラグ流入を検知する前に別のタイマーによって
一定時間（Ｔ３）後にＳＮを強制的に閉める方法も採用
できる。この方法によれば、スラグセンサーのスラグ検
知感度以下の少量のスラグ流出の際のスラグ流出を抑制
することも可能である。これらのスラグ混入防止のため
の溶融金属流出制御は流出する溶融金属の種類、流出速
度に応じてＳＮの開度、タイマーの時間等の設定値のパ
ターンを変えることができる。Further, the control flow and S shown in FIGS.
As shown in the N opening operation diagram, S
When reopening N and reflowing the molten metal, a method of forcibly closing SN after a certain time (T3) by another timer before the slag sensor detects the inflow of slag can be adopted. According to this method, it is also possible to suppress slag outflow when a small amount of slag is less than the slag detection sensitivity of the slag sensor. In the molten metal outflow control for preventing the slag mixture, the set value pattern such as the opening degree of the SN and the timer time can be changed according to the type of the molten metal flowing out and the outflow rate.
【００１５】[0015]
【実施例】容量３００ｔの溶鋼収容容器から容量７０ｔ
の溶鋼受け容器を介して鋳型に溶鋼を注入する装置を使
用して、受け容器への流出量の制御を行った。スラグセ
ンサーは本発明実施例、比較例とも同一の装置を用い、
スラグセンサーのスラグ検知閾値は１０％に設定した。
本発明実施においては、最初のスライディングノズル再
開開始時間（Ｔ１）を２秒に設定し、その時のスライデ
ィングノズルの開度（θ＝Ｘ）は全開時の４０％とし
た。表１に本発明の実施結果を比較例と共に示す。[Example] From a molten steel container having a capacity of 300 t to a capacity of 70 t
The amount of outflow to the receiving container was controlled by using a device for injecting the molten steel into the mold through the molten steel receiving container. For the slag sensor, the same device is used for both the inventive example and the comparative example,
The slag detection threshold of the slag sensor was set to 10%.
In the practice of the invention, the initial sliding nozzle restart start time (T1) was set to 2 seconds, and the opening (θ = X) of the sliding nozzle at that time was set to 40% of the fully opened state. Table 1 shows the results of carrying out the present invention together with comparative examples.
【００１６】[0016]
【表１】 [Table 1]
【００１７】実施例１から３においてはＳＮ絞り込み回
数をそれぞれ１回から３回まで実施し、絞り込み時のＳ
Ｎ開度（θ＝Ｙ）を０％（全閉）とした。また実施例４
から６においてはＳＮ絞り込み回数をそれぞれ１回から
３回まで実施し、絞り込み時のＳＮ開度（θ＝Ｙ）を全
開時の５％とした。さらに実施例７，８ではスラグセン
サーによるスラグ検知１秒後ＳＮが閉まるようにし、絞
り込み回数は各１回、そしてそれぞれ絞り込み時のＳＮ
開度（θ＝Ｙ）を０％と５％とした。一方比較例１，２
ではＳＮの絞り込み回数を０回（つまりスラグセンサー
がスラグ検知後にＳＮを閉めて注入を終了する）とし、
スラグセンサーのスラグ検知の閾値を１０％と２０％に
設定した。In Examples 1 to 3, the number of times of narrowing down the SN was carried out from 1 to 3 times, respectively, and S at the time of narrowing down was performed.
The N opening (θ = Y) was set to 0% (fully closed). Example 4
In Nos. 6 to 6, the number of times the SN was narrowed down was performed once to three times, respectively, and the SN opening (θ = Y) at the time of narrowing down was set to 5% of the fully opened state. Furthermore, in Examples 7 and 8, the SN was closed 1 second after the slag was detected by the slag sensor, the number of times of narrowing down was 1 each, and the SN at the time of narrowing down
The opening (θ = Y) was set to 0% and 5%. On the other hand, Comparative Examples 1 and 2
Then, the number of times the SN is narrowed down is set to 0 (that is, the SN is closed after the slag sensor detects the slug and the injection is terminated),
The slag detection thresholds of the slag sensor were set to 10% and 20%.
【００１８】表１には本発明と比較例による溶綱収容容
器の残留溶鋼および受け容器に流入したスラグ量も比較
して示した。本発明による方法によって、収容容器内に
残留する溶鋼、受け容器内に流入するスラグとも比較例
に比べ少なくなり、溶鋼の歩留りは向上し受け容器内の
溶綱金属の清浄性も向上した。Table 1 also shows a comparison of the residual molten steel of the molten steel container according to the present invention and the amount of slag flowing into the receiving container according to the comparative example. By the method according to the present invention, the amount of molten steel remaining in the storage container and the amount of slag flowing into the receiving container were reduced as compared with the comparative example, the yield of the molten steel was improved, and the cleanliness of the molten metal in the receiving container was also improved.
【００１９】[0019]
【発明の効果】以上説明したように、本発明による溶融
金属の流出時のスラグ混入防止方法によれば、溶融金属
収容容器から受け容器へ溶融金属を流出する際に、受け
容器中の溶融金属に流入するスラグ量を抑制することが
でき、収容容器内に残る溶融金属を少なくすることが可
能になるために、溶融金属歩留りが向上し、且つ、受け
容器内の溶融金属の清浄性が良好となる。As described above, according to the method for preventing slag mixing when molten metal flows out according to the present invention, when the molten metal flows out from the molten metal container to the receiving container, the molten metal in the receiving container The amount of slag that flows into the container can be suppressed, and the molten metal remaining in the storage container can be reduced, so that the molten metal yield is improved and the cleanliness of the molten metal in the receiving container is good. Becomes
【図１】本発明による構成装置を示す図FIG. 1 shows a component device according to the invention.
【図２】本発明による流出制御フローチャート（実施例
１）FIG. 2 is an outflow control flowchart according to the present invention (first embodiment).
【図３】図２の流出制御を実施した場合のＳＮ開度の操
作を示す図FIG. 3 is a diagram showing the operation of the SN opening when the outflow control of FIG. 2 is performed.
【図４】本発明の他の例の流出制御のフローチャート
（実施例２）FIG. 4 is a flowchart of outflow control according to another example of the present invention (second embodiment).
【図５】図４の流出制御のＳＮの操作を示す図5 is a diagram showing the operation of the outflow control SN of FIG. 4;
【図６】本発明の流出制御のフローチャート（実施例
３）FIG. 6 is a flow chart of outflow control according to the present invention (third embodiment).
【図７】図６の流出制御のＳＮ開度の操作を示す図7 is a diagram showing the operation of the SN opening of the outflow control of FIG.
１ 溶融金属収容容器 ２ 浸漬ノズル ３ 受け容器 ４ スラグセンサー（スラグ検知器） ５ 流量調整装置（ＳＮ） ６ スラグセンサー制御盤 ７ プロセスコンピューター ８ ＳＮ位置検出器 θ ＳＮ開度 Ｔ１，Ｔ２，Ｔ３ 設定時間 1 Molten Metal Storage Container 2 Immersion Nozzle 3 Receiving Container 4 Slag Sensor (Slag Detector) 5 Flow Rate Regulator (SN) 6 Slag Sensor Control Panel 7 Process Computer 8 SN Position Detector θ SN Opening T1, T2, T3 Set Time
Claims (3)
け容器内へ溶融金属を流出する際に、受け容器への流出
溶融金属中に混入するスラグをスラグ検知器で検知し、
その時点で収容容器の流出量調整装置を閉止し、受け容
器への溶融金属流出を中断して、収容容器内の溶融金属
中に混入されているスラグを収容容器内の溶融金属表面
に浮上させ、所定時間経過後前記流出量調整装置を再び
開き、再度受け容器内へ溶融金属を流出する操作を１回
以上行うことを特徴とする溶融金属流出時の溶融金属歩
留り向上方法。1. When a molten metal flows out from a molten metal container into another molten metal receiving container, a slag detector detects slag mixed in the molten metal flowing out to the receiving container,
At that time, the outflow adjusting device of the container is closed, the molten metal outflow to the receiving container is interrupted, and the slag mixed in the molten metal in the container is floated on the surface of the molten metal in the container. A method for improving the yield of molten metal at the time of molten metal outflow, which comprises reopening the outflow amount adjusting device after a lapse of a predetermined time and reflowing the molten metal into the receiving container once or more.
け容器内へ溶融金属を流出する際に、受け容器への流出
溶融金属中に混入するスラグを検知し、その時点から収
容容器の流出量調整装置の開度を絞り込み、受け容器へ
の溶融金属の流出量を減少させて、収容容器内の溶融金
属中に混入されているスラグを収容容器内の溶融金属表
面に浮上させた後、前記流出量調整装置で流出量を再び
増加して、受け容器内へ溶融金属を流出する操作を１回
以上行うことを特徴とする溶融金属流出時の溶融金属歩
留り向上方法。2. When the molten metal flows out of the molten metal container into another molten metal receiving container, slag mixed in the molten metal flowing out to the receiving container is detected, and the container flows out from that time. After narrowing the opening of the amount adjusting device, reducing the outflow amount of the molten metal to the receiving container, after the slag mixed in the molten metal in the receiving container is floated on the molten metal surface in the receiving container, A method for improving the yield of molten metal at the time of molten metal outflow, wherein the operation of outflowing the molten metal into the receiving container is performed once or more by increasing the outflow amount again by the outflow amount adjusting device.
加した後、流出溶融金属中に混入するスラグをスラグ検
知器での検知の有無に拘らず、タイマーによって流量調
整装置を全閉にするか、又はその開度を絞り込むことを
特徴とする請求項１又は請求項２記載の溶融金属流出時
の溶融金属歩留り向上方法。3. After flowing out or increasing the molten metal to the receiving container again, the flow rate adjusting device is fully closed by the timer regardless of whether the slag detector detects slag mixed in the outflowing molten metal. The method for improving the yield of molten metal at the time of molten metal outflow according to claim 1 or 2, wherein the opening is narrowed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6246817A JP3017027B2 (en) | 1994-09-16 | 1994-09-16 | Method of improving molten metal yield when molten metal flows out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6246817A JP3017027B2 (en) | 1994-09-16 | 1994-09-16 | Method of improving molten metal yield when molten metal flows out |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0890215A true JPH0890215A (en) | 1996-04-09 |
| JP3017027B2 JP3017027B2 (en) | 2000-03-06 |
Family
ID=17154138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6246817A Expired - Lifetime JP3017027B2 (en) | 1994-09-16 | 1994-09-16 | Method of improving molten metal yield when molten metal flows out |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3017027B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146665A1 (en) * | 2008-06-02 | 2009-12-10 | 田陆 | Device and method for detecting and controlling the slag in molten steel |
| JP2015066556A (en) * | 2013-09-26 | 2015-04-13 | 新日鐵住金株式会社 | Injection method for ladle molten steel in continuous casting |
| EP2868406A4 (en) * | 2012-06-29 | 2016-03-09 | Baoshan Iron & Steel | Control method and apparatus for continuous casting steel pouring |
-
1994
- 1994-09-16 JP JP6246817A patent/JP3017027B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009146665A1 (en) * | 2008-06-02 | 2009-12-10 | 田陆 | Device and method for detecting and controlling the slag in molten steel |
| EP2868406A4 (en) * | 2012-06-29 | 2016-03-09 | Baoshan Iron & Steel | Control method and apparatus for continuous casting steel pouring |
| JP2015066556A (en) * | 2013-09-26 | 2015-04-13 | 新日鐵住金株式会社 | Injection method for ladle molten steel in continuous casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3017027B2 (en) | 2000-03-06 |
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