JPS58125350A - Detection of clogging of nozzle for charging molten metal into continuous casting mold - Google Patents
Detection of clogging of nozzle for charging molten metal into continuous casting moldInfo
- Publication number
- JPS58125350A JPS58125350A JP644682A JP644682A JPS58125350A JP S58125350 A JPS58125350 A JP S58125350A JP 644682 A JP644682 A JP 644682A JP 644682 A JP644682 A JP 644682A JP S58125350 A JPS58125350 A JP S58125350A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- nozzle
- flow rate
- casting
- mold
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は溶融金属連続鋳造の鋳込みノズルのノズル詰シ
検出方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting nozzle clogging in a casting nozzle for continuous molten metal casting.
周知のごとく、連続鋳造中、モールドレベルが一定とな
る様に％鋳造速度に見合った溶鋼をモールド内Ｋｌｌ込
むべくタンディ、シ＆（または、レーｙル）のスト、ツ
タ−（または、スライプイングツスル）関度を＃整して
いるが、このストツノ譬−（または、スライディングノ
ズル）および鋳込ミノスルが、溶鋼中の不純物および溶
鋼温度等によ）・詰ったシ溶損を生じることがある。As is well known, during continuous casting, in order to keep the mold level constant, molten steel is poured into the mold in proportion to the % casting speed. However, if the casting nozzle (or sliding nozzle) and the casting nozzle become clogged (due to impurities in the molten steel, the temperature of the molten steel, etc.), melting damage may occur. There is.
ノズル詰）は、溶鋼中の不純物および溶鋼がノズル内壁
に固着するもので、溶鋼の吐出不良による生産性の低下
、溶鋼流量特性の変動によるモールドレベル制御不良を
引き起むす原因となる。まえ、ノズル溶損は、溶鋼によ
）ノズル耐火吻が浸蝕されるもので、溶鋼流量特性の変
動によるモールドレベル制御不良はもちろんのこと、溶
損の甚だしい４のは溶鋼の突出を引き起こし大きな設備
トラブルに継が夛、生産、保全上、多大な損害を与える
。Nozzle clogging occurs when impurities in molten steel and molten steel stick to the inner wall of the nozzle, leading to decreased productivity due to poor molten steel discharge and poor mold level control due to fluctuations in molten steel flow characteristics. First, nozzle melting damage occurs when the nozzle refractory nose is eroded by the molten steel, and not only does it cause poor mold level control due to fluctuations in the flow rate characteristics of the molten steel, but serious melting damage is caused by the protrusion of molten steel and is caused by large equipment. Troubles continue to occur, causing great damage to production and maintenance.
しかしながら、鋳込みノズルの内部状態を観察すること
は不可能であシ、ノズルの動作から大よその推定をして
いるのが現状であシこれでは、上記諸問題の根本的な解
決は―かしかった。本発明は、ノズル＃ｊＩシおよび溶
損状況を連続的に検出することｋよシ前述の諸欠点を未
然に対処し、＾生産性、高品質および安全な鋳造の実現
をねらいとする亀のである。However, it is impossible to observe the internal state of the casting nozzle, and the current situation is to make rough estimates based on the nozzle's operation. It was true. The present invention aims to solve the above-mentioned drawbacks by continuously detecting the nozzle and the melting condition, and to realize productivity, high quality, and safe casting. be.
本発明の要旨は、注入ノズル開度、上部容器の溶融金属
ヘッド、鋳臘巾、鋳臘内溶融金属レベル、連続鋳造速度
等の鋳造情報から注入ノズルの詰夛状況を演算すること
を特徴とする溶融金属連鋳鋳型内注入ノズル詰シ検出方
法である。以下詳細に説明する。The gist of the present invention is that the filling status of the injection nozzle is calculated from casting information such as the injection nozzle opening, the molten metal head in the upper container, the casting width, the molten metal level in the casting pot, and the continuous casting speed. This is a method for detecting clogging of an injection nozzle in a continuous casting mold for molten metal. This will be explained in detail below.
モールドレベルは、モールドよ如流出する溶鋼量とモー
ルドへ流入する溶鋼量の差の積分値となるためモールド
レベルが一定であれば、流出溶鋼駿と流入溶鋼量は同一
と見なせる。また、モールドレベルが変動している場合
でも、モールドレベルを検出しこれに、時間的な補正を
行ない流出流通にカロえることにより流出流量を推定す
ることがｃＩＴ＝ｉ：である。The mold level is the integral value of the difference between the amount of molten steel flowing out of the mold and the amount of molten steel flowing into the mold, so if the mold level is constant, the amount of molten steel flowing out and the amount of molten steel flowing in can be considered to be the same. Furthermore, even when the mold level is fluctuating, cIT=i: can be used to estimate the outflow flow rate by detecting the mold level, making temporal corrections thereto, and adding the amount to the outflow flow.
同、流出流量は、鋳造速度にモールド面積を乗すること
によシ求められる丸め、これより流入溶ｌｌｌ４ｍを推
定することは容易に可能である。Similarly, the outflow flow rate is rounded and obtained by multiplying the casting speed by the mold area, and from this it is easy to estimate the inflow molten lll4m.
一方、流入＃鋼量は、ノズル開度（ス）、／４−および
スライディングノズル）によって、ｌｌ整され、この（
１５には、一定の関係が成立するため、ノズル一度を検
出しこれを溶鋼ヘラｒ′４により補正することにより流
入溶鋼流量が求められる・溶鋼流量を実流入溶鋼流量と
し、ノズル開度よシ求めた流入溶鋼流量を還御流人溶鋼
流量として、両者を比較することＫよシノズルの詰シ程
度が求められる。以下図面により本発明の詳細な説明す
る。On the other hand, the inflow #steel amount is adjusted by the nozzle opening (S), /4- and sliding nozzle), and this (
15, since a certain relationship holds true, the flow rate of inflowing molten steel can be found by detecting the nozzle once and correcting it with the molten steel spatula r'4.The flow rate of molten steel is taken as the actual flow rate of inflowing molten steel, and the nozzle opening degree is calculated based on the system. The degree of clogging of the nozzle can be determined by comparing the obtained flow rate of inflow molten steel with the return flow rate of molten steel. The present invention will be explained in detail below with reference to the drawings.
嬶１図は、本発明の１実施態様例を示す図であって、１
は、溶鋼容器（タンディジ、ｔたは、レードル）、２は
、溶鋼容器の重さを計測するＪ１瞳計測器であって容器
の重さを計測することによって、溶器内溶鋼ヘッドを検
出せしめるものである。Figure 1 is a diagram showing one embodiment of the present invention,
2 is a molten steel container (Tandigi, T or ladle), 2 is a J1 pupil measuring device that measures the weight of the molten steel container, and detects the molten steel head in the melter by measuring the weight of the container. It is something.
３は、摺動プレート（スライディングノズル）、４は、
摺動プレート３の駆−用油圧シリンダ−１５は、摺動プ
レート３の開度を検出する位置検出器、６は、浸漬ノズ
ル、７は、鋳型（モールド）である、８は、鋳型７内の
溶鋼レベルを検出するレベル検出器、９は、鋳ｆｉ７の
巾を測定するモールド巾測定器、１０は、ビンチロール
、１１Ｆｉ、ピンチロールの回転数から鋳造速度を計算
する鋳造速度針側器、１２は、鋳造速度とモールＰ巾よ
り祷造溶ｗ４流量を計算する鋳造溶鋼流量演算器、１３
は、−造＃鋼流量とモールドレベルから実流入りｍ６ｍ
鎗を計算する実流入溶鋼流量演算器、１４ｔよ、ノズル
ｔ４度からノズル開口面積を計算するノズル開口面積演
算器である。１５は、溶鋼鍋重量より＃綱ヘッドを計算
する溶鋼ヘッド演算器、１６は、溶鋼ヘッド、ノズル開
口面積より理論流入溶鋼流量を計算する理論流入溶鋼流
量演算器、１７は、実流入溶鋼流量と理論流入溶鋼流量
からノズル詰り係数を計算するノズル詰り係数演算器、
１８は、ノズル詰シ係数を指示紀碌するノズル詰シ係数
指示記録針である。3 is a sliding plate (sliding nozzle), 4 is
A hydraulic cylinder 15 for driving the sliding plate 3 is a position detector for detecting the opening degree of the sliding plate 3, 6 is an immersion nozzle, 7 is a mold, and 8 is a position detector for detecting the opening degree of the sliding plate 3. 9 is a mold width measuring device that measures the width of the casting fi7; 10 is a pinch roll; 11Fi is a casting speed needle side device that calculates the casting speed from the number of rotations of the pinch roll; 12 is a casting molten steel flow rate calculator that calculates the casting molten steel w4 flow rate from the casting speed and molding P width; 13
-The actual inflow m6m from the mold level and the steel flow rate
14t is a nozzle opening area calculator that calculates the nozzle opening area from the nozzle t4 degrees. 15 is a molten steel head calculator that calculates the #rope head from the weight of the molten steel ladle, 16 is a theoretical inflow molten steel flow rate calculator that calculates the theoretical inflow molten steel flow rate from the molten steel head and nozzle opening area, and 17 is an actual inflow molten steel flow rate. Nozzle clogging coefficient calculator that calculates the nozzle clogging coefficient from the theoretical inflow molten steel flow rate;
Reference numeral 18 denotes a nozzle clogging coefficient indicating recording needle for indicating the nozzle clogging coefficient.
第１図の実ｍ態様例において鋳造速度は、鋳造逮臘針−
４１１によってピンチロール回転数からＩｔｔ−され、
−這溶一流量演算器１２によってモールド巾が乗じられ
鋳造溶鋼流量となる。更に、実流大府−流緻演Ｘ器１３
によって時間的に補正されたモールドレベルが、加えら
れることＫより実流入溶鋼流量が求められる。一方、ノ
ズル開度は、ノズル４０面積演算６１４によってノズル
開口面積に変換され溶鋼ヘッド演算器１５によって変−
遺された溶鋼ヘッドとともに理論流入溶鋼流量演算器で
理論流入溶鋼流量に変換され・ノズル詰り係数演算器１
７によシ実流入溶鋼流量と比較され、ノズル詰〉係数と
なシノズル詰）係数表示記録計１８によりて指示記録さ
れる。In the actual embodiment shown in FIG. 1, the casting speed is as follows:
Itt- is obtained from the pinch roll rotation speed by 411,
- The mold width is multiplied by the molten metal flow rate calculator 12 to obtain the casting molten steel flow rate. In addition, Jitsuryu Obu - Ryuusei X-ki 13
The actual inflowing molten steel flow rate is determined from K by adding the mold level temporally corrected by K. On the other hand, the nozzle opening degree is converted into a nozzle opening area by the nozzle 40 area calculation 614 and is changed by the molten steel head calculator 15.
The remaining molten steel head is converted into a theoretical inflow molten steel flow rate by a theoretical inflow molten steel flow rate calculator.・Nozzle clogging coefficient calculator 1
It is compared with the flow rate of molten steel actually inflowing at 7, and the nozzle clogging coefficient and the nozzle clogging coefficient are indicated and recorded by the display recorder 18.
以上の動作に従って出力されるノズル詰り係数ハ、溶鋼
ヘッド、モールドレベル、および鋳造速度等の外乱を受
けない安定した信号となシ、全鋳造期間中安定した応答
の早い正確な数値を示し、詰り発生に対する迅速な操業
対応が可能となり詰Ｊ）Ｋ＜い高生産性、高品質、かつ
安全な鋳造が実現できる。The nozzle clogging coefficient output according to the above operation is a stable signal that is not affected by disturbances such as the molten steel head, mold level, and casting speed, and shows accurate values with a stable and quick response during the entire casting period. It is possible to quickly respond to the occurrence of an outbreak, and it is possible to achieve high productivity, high quality, and safe casting.
第２図に実測例を示す、ノズル詰り係数は８０〜１２０
嚢の範囲であれば通常安定域といえる。Figure 2 shows an actual measurement example, and the nozzle clogging coefficient is 80 to 120.
If it is within the capsular area, it can be said that it is usually stable.
ノズル！ｉ１シ係数が６０〜７０−位になると簀報域と
な如５０嗟以下になると急速に結シが進行し操業停止と
なる１本図に示す如きは、鋳造来期の状態を示し、溶鋼
へ、ドの低下につれて急速にノズル詰シが進行している
状態を示す。nozzle! When the i1 coefficient reaches 60 to 70, it is in the warning range.When it falls below 50 m, condensation rapidly progresses and the operation is stopped. , indicates that nozzle clogging progresses rapidly as the power decreases.
以上、連続鋳造の鋳込みノズルのノズル詰り検出方法に
ついて説明したが、本考案は、溶鋼のみならず他のプロ
セスに適用できることは言うまでもなく、また、その検
出方法もこれと限定されるものではない。本発明思想の
変形として大気解放の流出形のノズルについても、その
流量を出口で勇足することにより実施可能である。Although the method for detecting nozzle clogging of a continuous casting nozzle has been described above, it goes without saying that the present invention can be applied not only to molten steel but also to other processes, and the detection method is not limited to this. As a modification of the idea of the present invention, an outflow type nozzle that is open to the atmosphere can also be implemented by increasing the flow rate at the outlet.
４１図は、本発明の実施態様例を示す制御回路図、
第２図は、本発明の実測例を示す図である。
１：溶鋼容器 ２：溶鋼容器重量計測器３：摺
動プレート ４：油圧シリンダー５二Ｊｌ＃Ｉｈプ
レートの開度を検出する位置検出器６：浸漬ノズル
７：鋳型
８：溶鋼レベル検出器 ９：モールＦｒｂ欄定器１０：
ピンチロール １１：鋳造速度計測器１２、−造溶鋼
流量演算器 ｌ ３ ：実流入溶鋼流量演算器１４
：ノズル開口面積演算器 １５：＠鋼ヘッド演算器１６
：埋鍮流入溶鋼流量演算器
１７：ノズル結シ理論流入溶鋼流量演算器１８：ノズル
詰シ係数表示記鎌計FIG. 41 is a control circuit diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an actual measurement example of the present invention. 1: Molten steel container 2: Molten steel container weight measuring device 3: Sliding plate 4: Position detector for detecting the opening degree of hydraulic cylinder 52 Jl#Ih plate 6: Immersion nozzle
7: Mold 8: Molten steel level detector 9: Mole Frb field gauge 10:
Pinch roll 11: Casting speed measuring device 12, - molten steel flow rate calculator l3: Actual inflow molten steel flow rate calculator 14
: Nozzle opening area calculator 15: @ Steel head calculator 16
: Inflow molten steel flow rate calculator 17: Nozzle connection theory inflow molten steel flow rate calculation unit 18: Nozzle clogging coefficient display sickle meter
Claims (1)
鋳型内溶融金属レベル、連続鋳造速度等の鋳造情報から
注入ノズルのｄＤ状況を演算することを特徴とする溶融
金属連鋳鋳盤内注入ノズル詰り検出方法。Once the injection nozzle, the molten metal head of the upper container P1 casting width,
A method for detecting clogging of an injection nozzle in a continuous caster for molten metal casting, characterized by calculating the dD status of the injection nozzle from casting information such as the level of molten metal in the mold and the continuous casting speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP644682A JPS58125350A (en) | 1982-01-19 | 1982-01-19 | Detection of clogging of nozzle for charging molten metal into continuous casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP644682A JPS58125350A (en) | 1982-01-19 | 1982-01-19 | Detection of clogging of nozzle for charging molten metal into continuous casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58125350A true JPS58125350A (en) | 1983-07-26 |
Family
ID=11638636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP644682A Pending JPS58125350A (en) | 1982-01-19 | 1982-01-19 | Detection of clogging of nozzle for charging molten metal into continuous casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58125350A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717039A (en) * | 2012-07-09 | 2012-10-10 | 田志恒 | Automatic plate blank continuous casting machine tundish pouring method and automatic pouring system |
| CN103586435A (en) * | 2013-11-12 | 2014-02-19 | 山西太钢不锈钢股份有限公司 | Method for continuous pouring through stainless steel replaceable tundishes |
| CN106955984A (en) * | 2016-01-08 | 2017-07-18 | 宝山钢铁股份有限公司 | Handle the autocontrol method and system of continuous casting channel blockage |
-
1982
- 1982-01-19 JP JP644682A patent/JPS58125350A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717039A (en) * | 2012-07-09 | 2012-10-10 | 田志恒 | Automatic plate blank continuous casting machine tundish pouring method and automatic pouring system |
| CN103586435A (en) * | 2013-11-12 | 2014-02-19 | 山西太钢不锈钢股份有限公司 | Method for continuous pouring through stainless steel replaceable tundishes |
| CN103586435B (en) * | 2013-11-12 | 2015-11-25 | 山西太钢不锈钢股份有限公司 | A kind of stainless steel changes the method that middle Bao Lian waters |
| CN106955984A (en) * | 2016-01-08 | 2017-07-18 | 宝山钢铁股份有限公司 | Handle the autocontrol method and system of continuous casting channel blockage |
| CN106955984B (en) * | 2016-01-08 | 2019-04-23 | 宝山钢铁股份有限公司 | Handle the autocontrol method of continuous casting channel blockage |
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