JPS5978763A - Method for controlling the level of molten steel in the mold in continuous casting - Google Patents
Method for controlling the level of molten steel in the mold in continuous castingInfo
- Publication number
- JPS5978763A JPS5978763A JP19055282A JP19055282A JPS5978763A JP S5978763 A JPS5978763 A JP S5978763A JP 19055282 A JP19055282 A JP 19055282A JP 19055282 A JP19055282 A JP 19055282A JP S5978763 A JPS5978763 A JP S5978763A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- level
- molten steel
- width
- change
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 24
- 239000010959 steel Substances 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 12
- 238000009749 continuous casting Methods 0.000 title claims description 8
- 238000005266 casting Methods 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、連続鋳造における鋳型内溶銅湯面レベル制
御方法に関し、詳しくは連続鋳造中に鋳型短片を移動せ
しめ鋳片幅を変更するεＪ−片幅定幅変更時記湯面レベ
ル制御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the level of molten copper in a mold in continuous casting, and more specifically, during continuous casting, when changing the width of a slab by moving a short mold piece during continuous casting. The present invention relates to a method for controlling a hot water surface level.
連続鋳造において、タンディツシュからの溶鋼の注入速
［争ＩＪ ｆｉｉＩを行い鋳型内の溶銅湯面レベル（以
下湯面レベルと云う）を一定に制御するには、一般に、
第１図に示すように、鋳型１に設置された鋳型自溶鋼湯
面レベル検出器２によシ鋳型１内の溶鋼３の湯面レベル
を検出し、この溶鋼湯面レベルが一定となるようにタン
ディツシュ４よシ注入される溶鋼３の注入速度をタンデ
ィツシュ４に設置されているスライディングノズル５ま
たはノズルストツノクー（図示せず）によって注入穴４
ａの開度をＷ１ｖ節することによシ、制御する方法が実
施されている。In continuous casting, in order to control the injection speed of molten steel from the tundish to a constant level of the molten copper in the mold (hereinafter referred to as the molten metal level), generally,
As shown in Fig. 1, the mold self-molten steel level detector 2 installed in the mold 1 detects the level of the molten steel 3 in the mold 1, and makes sure that the molten steel level remains constant. The injection speed of the molten steel 3 injected through the tundish 4 is controlled by the sliding nozzle 5 or nozzle tip (not shown) installed in the tundish 4.
A method has been implemented in which the opening degree of a is controlled by W1v.
第２図は、前記第１図の制御機構を示すブロック図であ
シ、鋳型内湯面レベル検出器２で検出した鋳型内湯面レ
ベル信号は、レベル調節計６に入力され、該レベル調節
計６において、あらかじめ記憶せしめられていた鋳型内
湯面レベルの目標値と比較される。而して前記目標値の
湯面レベル（以下目標湯面レベルと云う）と差異が生じ
た場合にはレベル調節計６よシスライディングノズル５
の開度調節引７に信号が発せられ、開度調節計７によっ
てスライディングノズル５０開度が調節され、タンディ
ツシュ４よシ鋳型１への溶鋼注入速度が適宜制御される
。FIG. 2 is a block diagram showing the control mechanism shown in FIG. At this point, the mold level is compared with a pre-stored target value for the level of the mold. If there is a difference from the target hot water level (hereinafter referred to as the target hot water level), the level controller 6 and the system sliding nozzle 5
A signal is issued to the opening adjustment pull 7, the opening of the sliding nozzle 50 is adjusted by the opening controller 7, and the speed of pouring molten steel into the tundish 4 and the mold 1 is appropriately controlled.
上記開度調節計７は目標とするスライディングノズル開
度とスライディングノズル開度検出器８で検出したスラ
イディングノズル開度の実績値とを比較し、スライデン
グノズル５の駆動装置９に駆動指令信号を与え、スライ
ディングノズル開度が目標スライディングノズル開度と
なるように自動的に修正しつ＼制御する機能を有してい
る。The opening controller 7 compares the target sliding nozzle opening with the actual value of the sliding nozzle opening detected by the sliding nozzle opening detector 8, and sends a drive command signal to the driving device 9 of the sliding nozzle 5. It has a function to automatically correct and control the sliding nozzle opening degree so that it becomes the target sliding nozzle opening degree.
以上のように鋳型内湯面レベルを検出し、スライデイン
−グノズル開度を変更し、タンディツシュよ少の溶鋼注
入速度を制御することによシ、鋳型内湯面レベルを適正
に制御するよう構成されていた。As described above, by detecting the level of the molten metal in the mold, changing the opening of the sliding nozzle, and controlling the molten steel injection speed at a rate smaller than that of the tundish, the level of the molten metal in the mold can be appropriately controlled. .
ところで周知の如く近年連続鋳造においてはその生産性
を向上させるために鋳造中に鋳片幅変更が頻繁に行われ
るようにな）、シかもその幅変更速度は一段と高速化さ
れる傾向となっている。該鋳片幅変更は例えば第２図に
示すように鋳型短片１ａに油圧・電気シリンダー等を利
用した抑圧装置縦１４を連結し、該抑圧装置１４ｔ−駆
動して短片ｌａ’を鋳片の幅方向に移動せしめることに
よって行われる。而して前記鋳片幅変更時は鋳型内の容
積が大きく変化し、このため、前記第２図に示す制御法
では前記容積変化に追従する精度の高い湯面レベル制御
が行えず鋳片の品質を悪化させたルブレークアウト等の
トラブルを生ずる等鋳片幅変更ケ実施するうえで大きな
障害となっていた。By the way, as is well known, in recent years in continuous casting, in order to improve productivity, the slab width has been changed frequently during casting), and the speed at which the width can be changed has tended to become even faster. There is. To change the width of the slab, for example, as shown in FIG. 2, a vertical suppression device 14 using a hydraulic or electric cylinder is connected to the mold short piece 1a, and the suppression device 14t is driven to change the width of the short piece la' to the slab width. This is done by moving in the direction. When changing the width of the slab, the volume inside the mold changes significantly. Therefore, the control method shown in Fig. 2 cannot accurately control the level of the molten metal to follow the volume change, and the slab width changes. This was a major obstacle to changing the width of the slab, as it caused problems such as breakout, which deteriorated quality.
本発明は、前記欠点を除去し、鋳片幅変更時における鋳
型内容積の変化があっても、精贋良く、鋳型内の湯面レ
ベル制衝１を行うことを目的とするもので、その要旨は
、設定短片位１ｆ！−１： ’ｆ−基準とする鋳片幅変
更信号と、鋳造速度信号および設定鋳片厚から鋳型内容
積変化を経時的に算出し、計算出値に基いて、タンディ
ツシュの溶鋼注入速度制御を行々うことを特徴とする鋳
型内溶鋼湯面レベル制御方法である。The object of the present invention is to eliminate the above-mentioned drawbacks and precisely control the level of molten metal in the mold even if the internal volume of the mold changes when changing the width of the slab. The gist is the setting short piece 1f! -1: 'f- Calculate the mold internal volume change over time from the standard slab width change signal, casting speed signal, and set slab thickness, and control the molten steel injection speed of the tundish based on the calculated value. This is a method for controlling the level of molten steel in a mold, which is characterized by:
次に本発明の１実施例を第３図に従って説明する。Next, one embodiment of the present invention will be described with reference to FIG.
第３図において、鋳型１には鋳型内の湯面レベルを検出
する検出器２および短片位置検出器１０が設置され、ま
た、タンディツシュ４には、スライディングノズル５が
設置され、ノズル開度を調整することによって溶鋼の注
入速度が調節できる構成となっている。In FIG. 3, the mold 1 is equipped with a detector 2 for detecting the level of hot water in the mold and a short piece position detector 10, and the tundish 4 is equipped with a sliding nozzle 5, which adjusts the nozzle opening. By doing so, the injection speed of molten steel can be adjusted.
湯面レベル検出器２としては、例えば鋳型１内に埋設さ
れた熱箪対金利用したものあるいは電磁式レベルセンサ
ーケ利用したもの等を、それぞれ単独で、又は縮合せて
用いればよい。又短片位置検出器１０は短片１ａの設定
位置よりの移動量、つまシ幅変更量を検出するもので、
短片１ａの位置を直接検出するもの、あるいは前記押圧
装置１４の移動量を検出し、該抑圧装置１４の移動量か
ら短片位置を検出するものでもよい。本発明者等の経験
では、抑圧装置１４にステッピングシリンダーを用いた
ものにおいては該ステッピングシリンダーに発せられる
指令パルスをカウントし、カウノ′トされた該ノぐルス
よシスチッピングシリンダー移動量ヲ検出する機構のも
のが高鞘朋の位置検出が可能とな逆効果的であった。As the hot water level detector 2, for example, one using a heat sink buried in the mold 1 or one using an electromagnetic level sensor may be used alone or in combination. The short piece position detector 10 detects the amount of movement of the short piece 1a from the set position and the amount of change in the width of the tab.
It may be possible to directly detect the position of the short piece 1a or to detect the amount of movement of the pressing device 14 and detect the position of the short piece from the amount of movement of the suppressing device 14. In the experience of the present inventors, in the case where a stepping cylinder is used as the suppression device 14, the command pulses issued to the stepping cylinder are counted, and the amount of movement of the stepping cylinder is detected by the counted noggles. The one with the mechanism was counterproductive as it was possible to detect the position of Takaya Tomo.
１１は鋳造速度検出器で鋳型１より引抜かれた鋳片１５
の速［ｆ例えば鋳片引抜用ロール（ピンチロール）の回
転速度′検出器等によって検出するととにより鋳造速度
が検出される。Reference numeral 11 indicates the slab 15 pulled out from the mold 1 by a casting speed detector.
The casting speed is detected by the speed [f, for example, the rotational speed of a roll for drawing slabs (pinch rolls)' detected by a detector or the like.
さて、本実施例においては、前述の短片位置検出器１０
からの鋳型幅変更信号ａおよび鋳造速度検出器１１から
の鋳造速［（Ｍ号すは、演算装置１２に入力される。演
算装置１２には設定鋳片厚、即ち、鋳造中の鋳片の厚み
が例えば鋳造指令条件よシ予め入力され、あるいは鋳型
１よシ引抜かれた鋳片１５の厚みを実測し、その実測値
が入力されておシ、該鋳片厚と前記鋳型幅変更信号ａお
よび鋳造速度信号すよシ、鋳型内容積変化（以下単に容
積変化と云う）を経時的に算出する。次に演算装置１２
による前記容積変化斜−出法の一実施例について説明す
る。下記（１）式は鋳型１に目標湯面レベルまで溶鋼３
ｔ−注入する場合の鋳型内溶鋼受入れ可能容積（以下、
可能容積と云う＞ｖｔ算出する計算式を示すものである
。Now, in this embodiment, the above-mentioned short piece position detector 10
The mold width change signal a from the casting speed detector 11 and the casting speed [(M) from the casting speed detector 11 are input to the calculation device 12. For example, the thickness may be input in advance according to the casting command conditions, or the thickness of the slab 15 drawn from the mold 1 may be actually measured and the measured value input, and the thickness of the slab and the mold width change signal a. and the casting speed signal, and the change in mold internal volume (hereinafter simply referred to as volume change) are calculated over time.Next, the calculation unit 12
An example of the volume change oblique output method will be described. Equation (1) below shows how to fill mold 1 with molten steel 3 up to the target level.
t-Capacity that can accommodate molten steel in the mold when injecting (hereinafter referred to as
This is a calculation formula for calculating the possible volume >vt.
Ｖ （ｍ′′／ｍｉｎ ） ＝Ｗ（Ｊｎ） Ｘ Ｄ（Ｉ
ｎ） Ｘ Ｕ （ｍ／ｍ１ｎ） −−（１１但し、Ｖ：
可能容積
Ｗ：鋳型幅
ｌ）二鋳片厚
Ｕ：鋳造速度
従って鋳片幅変更時の１鋳型幅Ｗの変化に伴う可能容積
Ｖを所定時間毎に算出するとその変化ｈ（に対応する可
能容積が求められそれらを相互に比較することによって
可能容積Ｖの変化量、即ち本発明で称する容積変化が算
出される。第４図は鋳造速度が一定の条件下での鋳片幅
変更時の容積変化を図表化したもので範囲Ｘが幅拡大時
、範囲Ｙが幅縮小時を表わすものである。該第４図よシ
判るように算出単位時間△ｔを短かくすればする程算出
された容積変化は連続した直線状に表わされ、経時的な
容積変化を正確に算出できる。V (m′′/min) = W(Jn)
n) X U (m/m1n) --(11 However, V:
Possible volume W: Mold width l) Slab thickness U: Casting speed Accordingly, when changing the slab width, if the possible volume V associated with a change in mold width W is calculated every predetermined time, the possible volume corresponding to the change h ( are determined and compared with each other to calculate the amount of change in the possible volume V, that is, the volume change referred to in the present invention. Figure 4 shows the volume when changing the slab width under the condition that the casting speed is constant. This graph shows the changes, where range X shows when the width is expanded and range Y shows when the width is reduced.As can be seen from Figure 4, the shorter the calculation unit time △t, the better the calculation. The volume change is expressed in a continuous straight line, and the volume change over time can be calculated accurately.
而して、演舞、装置１２によって経時的に算出された前
記容積変化の算出値は加算装＃１３を介してスライディ
ングノズル５の開度調節計７に入力され、前記算出値に
基づいてスライディングノズルの開度を調整しタンディ
ツシュ４から鋳型１へ注入される溶鋼注入速度制御を行
う。例えば幅拡大時にｅよ、可能容積は順次増大し、容
積変１ヒは第４図に示すように正の方向へ変化するため
にスライプ・イングノズル５の開度を太きくする方向に
制御する。尚、第３図の実施例では加算装置１３に演算
装置１２よシ容積変化の算出値を入力すると共にレベル
調節計６よシの信号が入力される。レベル調節計６では
、前述したように目標湯面レベルと湯面レベル計２によ
る湯面レベル実測値とが比較され、それに差異が生じた
場合にはその差位に応じた信号が発せられる。而して幅
変更時の鋳型幅あるいはｌｘ造速匪の変更以外の外乱要
因によって湯面レベルが目標湯面レベルに対して差異を
生じた場合、加算装置１３によって演算装置１２よりの
算出値に、レベル調創′ｉ言１６よシの信号（変動値）
を加算して開ＬＷ調節計７に発する指令信号全自動的に
補正する。Then, the calculated value of the volume change calculated over time by the performance device 12 is inputted to the opening degree controller 7 of the sliding nozzle 5 via the adding device #13, and the sliding nozzle is adjusted based on the calculated value. The opening degree of the molten steel is adjusted to control the injection speed of molten steel from the tundish 4 to the mold 1. For example, when the width is expanded, the possible volume (e) increases sequentially, and the volume change (1) changes in the positive direction as shown in Figure 4, so the opening degree of the sliding nozzle 5 is controlled in the direction of increasing . In the embodiment shown in FIG. 3, the calculated value of the volume change from the arithmetic unit 12 is inputted to the adding device 13, and the signal from the level controller 6 is also inputted thereto. As described above, the level controller 6 compares the target hot water level with the actual hot water level measured by the hot water level meter 2, and if a difference occurs, a signal corresponding to the difference is generated. If the melt level differs from the target melt level due to a disturbance factor other than a change in the mold width at the time of width change or a change in lx production speed, the addition device 13 adjusts the value calculated by the calculation device 12 to the value calculated by the calculation device 12. , level adjustment'i word 16 signal (fluctuation value)
The command signal issued to the open LW controller 7 is automatically corrected by adding the following.
以上のように本発明では短片１ａの設定位置を基阜とす
る鋳型幅変更信号と鋳造速度信号および設定鋳片厚７Ｊ
＼ら容積変化を経時的にη６出し、との算出値を基準と
してタンディツシュの溶鋼注入速度制御を行うもので、
本発明の実施によって容積変化の激しい幅変更時におい
てもスライディングノズル開度をただちに調整すること
ができ、鋳型内湯面レベルを乱すことなく、制御するこ
とカス可能となった。従って、本発明によれば鋳芥・中
鋳片幅変更時においても、非常に安定した鋳型内溶鋼湯
面レベル制御を行なうことか可能で、鋳片品質の向上や
、操業を安定させる上で、その効果は非常に太きい。As described above, in the present invention, the mold width change signal, the casting speed signal, and the set slab thickness 7J are based on the set position of the short piece 1a.
The molten steel injection speed of the tanditshu is controlled based on the calculated value of the volume change over time, η6.
By implementing the present invention, the opening degree of the sliding nozzle can be immediately adjusted even when the width is changed due to a drastic change in volume, and it has become possible to control the molten metal level in the mold without disturbing it. Therefore, according to the present invention, even when changing the width of the cast iron or medium slab, it is possible to control the level of molten steel in the mold in a very stable manner, which is useful for improving slab quality and stabilizing operations. , the effect is very strong.
本発明者等の経験では２０ ＃ｌＩ ／ｍｉｎの速度で
幅変更を実施した場合、第２図に示す従来の制御方法で
は目標湯面レベルに対し、実測した湯面レベルは±２０
前の変動が生じたが、本発明の実施で社±１０１１１１
以下となシ、極めて亮精度の湯面レベル制御が可能であ
ることが確認された。又本発明では幅変更速度が前記２
０Ｍ／ｍｉｎよシ晶〈なってもその精度は殆んど変化は
°なかったが従来の制御法では、目標湯面レベルと実測
湯面レベルの差はさらに太きくなシ実質的に幅変更がで
きなかつた。In the experience of the present inventors, when the width is changed at a speed of 20 #lI /min, the actually measured hot water level is ±20% of the target hot water level using the conventional control method shown in Fig. 2.
However, with the implementation of this invention, the company ±101111
It was confirmed that it is possible to control the hot water level with extremely high precision as shown below. Further, in the present invention, the width change speed is
Even if the temperature decreases to 0M/min, there is almost no change in accuracy, but with the conventional control method, the difference between the target level and the measured level becomes even wider. I couldn't do it.
以上のように本発明の実用的効果ｉｆｆ極めて犬である
。As described above, the practical effects of the present invention are extremely significant.
第１図は、鋳型内溶鋼湯面レベル制御を行うタンディツ
シュと鋳型の構成図、
第２図は、従来の鋳型内溶鋼湯面レベル制御方法を示す
ブロック図、
第３図は、本発明による鋳型内溶鋼湯百レベル制御方法
を示すブロック図、
第４図は、幅変更時の容積変化状況な示す図表である。
１・・・鋳型、２・・・鋳型内溶鋼湯面しベル検出器、
３−・・溶鋼、４・・・タンディツシュ、５・・・スラ
イディングノズル、６・・・レベル調節計、７・・・ス
ライディングノズル開度調節計、９・・・スライディン
グノズル駆動装置、１０・・・短片位置検出器、１１・
・・鋳造速度検出器、１２・・・演算装置Ｋ（：、１３
・・・力ｌη装置ｆ１１４・・・押圧装置、１５・・・
鋳片。
代理人 弁理士 秋 沢 政 光
潟Ｉ図
９
め、３図
名４図Figure 1 is a block diagram of a tundish and mold that control the level of molten steel in the mold. Figure 2 is a block diagram showing a conventional method for controlling the level of molten steel in the mold. Figure 3 is a mold according to the present invention. Figure 4 is a block diagram showing the control method for internally molten steel at 100 levels. 1... Mold, 2... Molten steel level bell detector in the mold,
3-... Molten steel, 4... Tandish, 5... Sliding nozzle, 6... Level controller, 7... Sliding nozzle opening controller, 9... Sliding nozzle drive device, 10...・Short piece position detector, 11・
...Casting speed detector, 12...Arithmetic unit K (:, 13
...Force lη device f114...Press device, 15...
Cast piece. Agent Patent Attorney Masaaki Akizawa
Claims (1)
する連続鋳造方法において、 設定短片位置を基準とする鋳造速度信号と鋳造速度信号
および設定鋳片厚から鋳型内容積変化を経時的に算出し
、該算出値に基いてタンディツシュの溶鋼注入速度制御
全行なうことを特徴とする鋳型自溶鋼湯面レベル制御方
法。[Scope of Claims] (11) In a continuous casting method in which the strip width is changed by moving the mold strip during continuous casting, a casting speed signal based on a set strip position, a casting speed signal, and a set strip thickness are used to form a mold. 1. A method for controlling the level of self-molten steel in a mold, characterized in that the internal volume change is calculated over time, and the molten steel injection rate of the tundish is fully controlled based on the calculated value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19055282A JPS5978763A (en) | 1982-10-29 | 1982-10-29 | Method for controlling the level of molten steel in the mold in continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19055282A JPS5978763A (en) | 1982-10-29 | 1982-10-29 | Method for controlling the level of molten steel in the mold in continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5978763A true JPS5978763A (en) | 1984-05-07 |
| JPS6261383B2 JPS6261383B2 (en) | 1987-12-21 |
Family
ID=16259970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19055282A Granted JPS5978763A (en) | 1982-10-29 | 1982-10-29 | Method for controlling the level of molten steel in the mold in continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5978763A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293954A (en) * | 1988-05-19 | 1989-11-27 | Nippon Steel Corp | Molten metal level control method for continuous thin slab casting machine with variable width |
| KR100529062B1 (en) * | 2003-12-23 | 2005-11-15 | 재단법인 포항산업과학연구원 | Apparatus for controlling mold level in liquid core reduction |
| US7779891B2 (en) | 2001-04-09 | 2010-08-24 | Sumitomo Electric Industries, Ltd. | Method of manufacturing magnesium alloy material |
| WO2019099480A1 (en) * | 2017-11-15 | 2019-05-23 | Novelis Inc. | Metal level overshoot or undershoot mitigation at transition of flow rate demand |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4661857B2 (en) * | 2001-04-09 | 2011-03-30 | 住友電気工業株式会社 | Magnesium alloy material and method for producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342018A (en) * | 1976-09-28 | 1978-04-17 | Matsushita Electric Ind Co Ltd | Magnetic head and preparation thereof |
| JPS56126065A (en) * | 1980-03-10 | 1981-10-02 | Nippon Steel Corp | Sn automatic casting control method |
| JPS57159252A (en) * | 1981-03-27 | 1982-10-01 | Sumitomo Metal Ind Ltd | Controlling method for molten metal level of continuous casting mold |
-
1982
- 1982-10-29 JP JP19055282A patent/JPS5978763A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342018A (en) * | 1976-09-28 | 1978-04-17 | Matsushita Electric Ind Co Ltd | Magnetic head and preparation thereof |
| JPS56126065A (en) * | 1980-03-10 | 1981-10-02 | Nippon Steel Corp | Sn automatic casting control method |
| JPS57159252A (en) * | 1981-03-27 | 1982-10-01 | Sumitomo Metal Ind Ltd | Controlling method for molten metal level of continuous casting mold |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01293954A (en) * | 1988-05-19 | 1989-11-27 | Nippon Steel Corp | Molten metal level control method for continuous thin slab casting machine with variable width |
| US7779891B2 (en) | 2001-04-09 | 2010-08-24 | Sumitomo Electric Industries, Ltd. | Method of manufacturing magnesium alloy material |
| KR100529062B1 (en) * | 2003-12-23 | 2005-11-15 | 재단법인 포항산업과학연구원 | Apparatus for controlling mold level in liquid core reduction |
| WO2019099480A1 (en) * | 2017-11-15 | 2019-05-23 | Novelis Inc. | Metal level overshoot or undershoot mitigation at transition of flow rate demand |
| JP2020505235A (en) * | 2017-11-15 | 2020-02-20 | ノベリス・インコーポレイテッドＮｏｖｅｌｉｓ Ｉｎｃ． | Reduction of metal level overshoot or undershoot during transition of flow demand |
| US10632528B2 (en) | 2017-11-15 | 2020-04-28 | Novelis Inc. | Metal level overshoot or undershoot mitigation at transition of flow rate demand |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6261383B2 (en) | 1987-12-21 |
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