JPH04224052A - Method and device for controlling pushing force to side weir in continuous caster for cast strip - Google Patents
Method and device for controlling pushing force to side weir in continuous caster for cast stripInfo
- Publication number
- JPH04224052A JPH04224052A JP40659390A JP40659390A JPH04224052A JP H04224052 A JPH04224052 A JP H04224052A JP 40659390 A JP40659390 A JP 40659390A JP 40659390 A JP40659390 A JP 40659390A JP H04224052 A JPH04224052 A JP H04224052A
- Authority
- JP
- Japan
- Prior art keywords
- side weir
- force
- pressing force
- pressing
- detector
- 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
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 39
- 238000005266 casting Methods 0.000 claims description 8
- 238000009749 continuous casting Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は溶湯から薄鋳片を連続し
て鋳造する双ドラム式鋳造技術に関し、特に、サイド堰
押圧力の制御技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin-drum casting technique for continuously casting thin slabs from molten metal, and more particularly to a technique for controlling side weir pressing force.
【0002】0002
【従来の技術】一般に双ドラム式連続鋳造機(以下連鋳
機と云う)は図3に示すように冷却ドラム1,1を平行
にかつ逆方向に回転するように配置し、該冷却ドラム1
,1の両端面にサイド堰2,(2)(サイド堰(2)は
図示せず)を設けて湯溜り部を構成し、該湯溜り部内の
溶湯Mを冷却ドラム1,1の回転によって冷却しつゝ薄
鋳片Sを鋳造するようになっている。また、サイド堰2
,(2)は冷却ドラム1,1の両端面に押圧器4によっ
て押付けられ、冷却ドラムの回転による摩耗によってシ
ール状態を維持して湯漏れを防止している。2. Description of the Related Art In general, a twin-drum continuous casting machine (hereinafter referred to as a continuous casting machine) has cooling drums 1, 1 arranged so as to rotate in parallel and in opposite directions, as shown in FIG.
, 1 are provided with side weirs 2, (2) (the side weirs (2) are not shown) to form a pool, and the molten metal M in the pool is cooled by the rotation of the cooling drums 1, 1. A thin slab S is cast while cooling. Also, side weir 2
, (2) are pressed against both end surfaces of the cooling drums 1, 1 by a presser 4, and are maintained in a sealed state by wear due to rotation of the cooling drums to prevent hot water from leaking.
【0003】かゝるサイド堰押圧技術に関し、従来種々
な提案がなされている。たとえば鋳造時にサイド堰に作
用する拡開力を制御する技術が特開昭63−17794
4号公報又は特開昭64−83337号公報などで開示
されている。Various proposals have been made regarding such side weir pressing techniques. For example, Japanese Patent Application Laid-Open No. 63-17794 disclosed a technology for controlling the expanding force that acts on the side weir during casting.
This is disclosed in Publication No. 4 or Japanese Patent Application Laid-Open No. 64-83337.
【0004】0004
【発明が解決しようとする課題】しかしながら、従来の
技術ではサイド堰に生じる摩擦力を考慮していないため
、所望するシール面圧力を得るために、サイド堰押圧手
段で押圧調整したとしても、実際の冷却ドラム両端面に
作用するシール面圧力は摩擦力に起因する押付けの増減
圧力に対応した誤差を伴い、かつ摩擦力の増変化により
圧力誤差は徐々に拡がってサイド堰の片減り現象が生じ
、また最悪の場合はシールに必要な密着圧力の維持が困
難となって湯漏れを発生して鋳造を持続できない事態と
なる。[Problems to be Solved by the Invention] However, since the conventional technology does not take into account the frictional force generated on the side weir, even if the pressure is adjusted by the side weir pressing means to obtain the desired sealing surface pressure, it is difficult to actually The seal surface pressure that acts on both end faces of the cooling drum is accompanied by an error corresponding to the increase or decrease in pressing pressure due to frictional force, and the pressure error gradually expands due to the increase or decrease in frictional force, resulting in the phenomenon of one-sided wear of the side weir. In the worst case, it becomes difficult to maintain the contact pressure necessary for the seal, leading to leakage of the metal and making it impossible to continue casting.
【0005】本発明は連鋳機におけるサイド堰の押圧力
に関する上記問題点を解決するものである。The present invention is intended to solve the above-mentioned problems regarding the pressing force of the side weir in a continuous casting machine.
【0006】[0006]
【課題を解決するための手段】本発明は回転中の冷却ド
ラム両端面とサイド堰平面部との密接部分での圧力状況
の解明によってなされたもので、その特徴は、冷却ドラ
ム両端面とサイド堰との間に生じた摩擦力を検出し、こ
の摩擦力によって生ずるサイド堰押圧力の増減圧力を求
めて該押圧力を調整し、しかる後該調整された押圧力で
サイド堰を冷却ドラム両端面に押圧するところにある。[Means for Solving the Problems] The present invention was made by elucidating the pressure situation in the close contact area between both end faces of a rotating cooling drum and the side weir flat part, and its characteristics are as follows: The frictional force generated between the weir and the weir is detected, and the pressure increase/decrease in the side weir pressing force caused by this frictional force is determined and the pressing force is adjusted.Then, the side weir is moved to both ends of the cooling drum using the adjusted pressing force. It is in the place where it is pressed against the surface.
【0007】以下本発明を詳細に説明する。The present invention will be explained in detail below.
【0008】[0008]
【作用】回転中の冷却ドラム両端面とサイド堰との間に
は摩擦係数と押圧力とで決まる摩擦力が働く。この摩擦
力はサイド堰を下方へ押下げる作用と、相対する冷却ド
ラム側へ押出す作用とを有する。この作用力は押圧手段
の支持点を介して冷却ドラム両端面に平行な水平軸を中
心とするモーメントと垂直軸を中心とするモーメントを
生じ、該モーメントに対応した押圧方向力は押圧手段に
よる冷却ドラム両端面とサイド堰の密接部面圧(シール
面圧)を増減させる。[Operation] A friction force determined by the friction coefficient and the pressing force acts between both end surfaces of the rotating cooling drum and the side weir. This frictional force has the effect of pushing down the side weir and the effect of pushing it toward the opposing cooling drum side. This acting force generates a moment centered on the horizontal axis parallel to both end surfaces of the cooling drum and a moment centered on the vertical axis through the support point of the pressing means, and the pressing direction force corresponding to the moment is applied to the cooling drum by the pressing means. Increase or decrease the contact pressure (seal surface pressure) between both end faces of the drum and the side weir.
【0009】従って、この摩擦力を検知してシール部分
の増減圧力を算出し、この値で調整した押圧力でサイド
堰を冷却ドラム両端面に押圧すれば、所望のシール面圧
を精度高く、連続して確保することができる。[0009] Therefore, by detecting this frictional force and calculating the increase/decrease pressure at the seal portion, and pressing the side weir against both end faces of the cooling drum with the pressing force adjusted using this value, the desired seal surface pressure can be achieved with high precision. Can be secured continuously.
【0010】0010
【実施例】本発明の一実施例を図面に基づいて説明する
。 図において、サイド堰2の冷却ドラム1,1の端
面に接する面と反対側の面に、サイド堰支持軸3を固設
し、該支持軸3を断面角状のサイド堰支持シリンダー6
に嵌入する。また、上記反対側面に、押圧器4のロッド
4−1〜4−3を固設し、各ロッドを油圧シリンダー5
−1〜5−3に嵌入する。なお、前記サイド堰支持軸シ
リンダー6と油圧シリンダー5−1〜5−3の端部はそ
れぞれ基盤8に固設されている。前記シリンダー6には
荷重検出器7−1〜7−4をその検出端がサイド堰支持
軸3の直角方位の周面に接するように配設する。前記荷
重検出器7−1〜7−4には、該検出器で検出した信号
を送る摩擦力演算装置9を連結し、該演算装置9には摩
擦力信号を送る押圧力加減演算装置10を連結し、更に
該演算装置10には押圧力加減信号を送る押圧力駆動制
御装置11−1〜11−3を連結し、該制御装置を前記
押圧器4の油圧シリンダー5−1〜5−3に連結する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained based on the drawings. In the figure, a side weir support shaft 3 is fixedly installed on the side surface of the side weir 2 opposite to the surface in contact with the end surfaces of the cooling drums 1, 1, and the support shaft 3 is connected to a side weir support cylinder 6 having a rectangular cross section.
to be inserted into. Moreover, the rods 4-1 to 4-3 of the presser 4 are fixed on the opposite side, and each rod is attached to the hydraulic cylinder 5.
-1 to 5-3. Note that the ends of the side weir support shaft cylinder 6 and the hydraulic cylinders 5-1 to 5-3 are each fixed to the base 8. Load detectors 7-1 to 7-4 are disposed in the cylinder 6 so that their detection ends are in contact with the peripheral surface of the side weir support shaft 3 in the right angle direction. The load detectors 7-1 to 7-4 are connected with a friction force calculation device 9 that sends signals detected by the detectors, and a pressing force adjustment calculation device 10 that sends friction force signals is connected to the calculation device 9. Furthermore, pressing force drive control devices 11-1 to 11-3 that send pressing force adjustment signals are connected to the arithmetic unit 10, and the control devices are connected to the hydraulic cylinders 5-1 to 5-3 of the presser 4. Connect to.
【0011】本発明の装置は以上の構成よりなるが、か
ゝる装置を次のようにして作動する。先ず、冷却ドラム
1,1の端面にサイド堰2を油圧シリンダー5−1〜5
−3により所望圧力で押圧し、冷却ドラム1,1を回転
する。湯溜り部内の溶湯は冷却ドラムに接する部分より
冷却されてシェルを形成し、冷却ドラムに圧着されて薄
鋳片を製造するが、鋳造が進むにつれサイド堰の摩耗に
伴い、押圧力が増加して冷却ドラム端面とサイド堰との
密接部分における摩擦力が増加する。上記摩擦力は冷却
ドラム両端面に平行な水平軸を中心とするモーメントと
垂直軸を中心とするモーメントを生ぜしめてそれぞれサ
イド堰を内側へ凹状に、または凸状に変形させてサイド
堰と冷却ドラム端面部との密接シール部分の面圧を増減
させるが、上述の如く摩擦力が増加すると上記現象が増
大する。従って、鋳造時、常に冷却ドラム端面の上下左
右各方向の摩擦力を検出する。The apparatus of the present invention has the above-mentioned structure, and is operated as follows. First, the side weir 2 is installed on the end face of the cooling drum 1, 1 by the hydraulic cylinders 5-1 to 5-5.
-3 to press with a desired pressure and rotate the cooling drums 1,1. The molten metal in the pool is cooled from the part in contact with the cooling drum to form a shell, which is pressed against the cooling drum to produce thin slabs, but as casting progresses, the pressing force increases as the side weirs wear out. As a result, the frictional force at the close contact portion between the end face of the cooling drum and the side weir increases. The above frictional force generates a moment centered on the horizontal axis parallel to both end surfaces of the cooling drum and a moment centered on the vertical axis, deforming the side weirs inwardly into a concave or convex shape, thereby causing the side weirs and the cooling drum to deform, respectively. Although the surface pressure of the close sealing portion with the end face portion is increased or decreased, as the frictional force increases as described above, the above phenomenon increases. Therefore, during casting, the frictional force on the end surface of the cooling drum in each direction is constantly detected.
【0012】上記多方向の摩擦力はサイド堰支持軸3の
周囲に設けた4個の荷重検出器7−1〜7−4によって
検出され、該検出器からの信号が摩擦力演算装置9に送
られ、こゝで摩擦力が演算される。しかるのち、該演算
装置9からの摩擦力信号は押圧力加減演算装置10へ送
られ、こゝで該摩擦力データから摩擦力に起因する押圧
力の増減圧力が演算処理で求められる。所望のシール面
圧は所望のシール面圧=摩擦増減圧力+調整押圧力で求
められるので、上記式より調整押圧力を求めることがで
きる。しかして、該調整押圧力信号を押圧力駆動制御装
置11−1〜11−3に送り、該制御装置によって押圧
器の油圧シリンダー5−1〜5−3の押圧作動を制御す
るのである。The multidirectional frictional forces are detected by four load detectors 7-1 to 7-4 provided around the side weir support shaft 3, and signals from the detectors are sent to the frictional force calculation device 9. This is where the frictional force is calculated. Thereafter, the frictional force signal from the calculation device 9 is sent to the pressing force adjustment calculation device 10, where an increase or decrease in the pressing force due to the frictional force is determined from the frictional force data through calculation processing. Since the desired seal surface pressure is determined by desired seal surface pressure=friction increase/decrease pressure+adjusted pressing force, the adjusted pressing force can be determined from the above formula. The adjusted pressing force signal is then sent to the pressing force drive control devices 11-1 to 11-3, which control the pressing operations of the hydraulic cylinders 5-1 to 5-3 of the presser.
【0013】すなわち、摩擦力に起因する変化(摩擦増
減圧力)を調整押圧力で補正しつゝ所望のシール面圧を
維持するように押圧手段によってサイド堰を押圧するの
である。なお、摩擦力は前述の荷重検出器の代りにサイ
ド堰支持軸の曲げ検出器によって検知するようにしても
よい。That is, the side weir is pressed by the pressing means so as to maintain the desired sealing surface pressure while correcting the change due to frictional force (frictional increase/decrease pressure) with the adjusted pressing force. Note that the frictional force may be detected by a bending detector of the side weir support shaft instead of the load detector described above.
【0014】[0014]
【発明の効果】以上述べた如く、本発明によれば、摩擦
力の外乱の影響を受けることなく、所望のシール面圧で
ある溶湯のシールに必要な最小限の密接圧力を常時維持
することが可能となり、サイド堰の片減り現象、シール
面圧不足による湯漏れを回避することができるので、長
時間の鋳造が安定して継続できるという優れた効果を有
する。As described above, according to the present invention, it is possible to constantly maintain the minimum contact pressure necessary for sealing the molten metal, which is the desired sealing surface pressure, without being affected by disturbances of frictional force. This makes it possible to avoid the uneven wear of the side weir and leakage due to lack of seal surface pressure, which has the excellent effect of allowing stable casting to continue for a long time.
【図1】本発明の一実施例を示す一部断面平面図である
。FIG. 1 is a partially sectional plan view showing an embodiment of the present invention.
【図2】図1X−X線断面図である。FIG. 2 is a sectional view taken along the line X-X in FIG.
【図3】従来の連鋳機を示す概略側面図である。FIG. 3 is a schematic side view showing a conventional continuous casting machine.
1…冷却ドラム 2…サイド堰 3…サイド堰支持軸 4…押圧器 4−1〜4−3…ロッド 5−1〜5−3…油圧シリンダー 6…サイド堰支持軸シリンダー 7−1〜7−4…荷重検出器 8…基盤 9…摩擦力演算装置 10…押圧力加減演算装置 1...Cooling drum 2...Side weir 3...Side weir support shaft 4...Press device 4-1 to 4-3...rod 5-1 to 5-3...Hydraulic cylinder 6...Side weir support shaft cylinder 7-1 to 7-4...Load detector 8...Foundation 9...Frictional force calculation device 10...Press force adjustment calculation device
Claims (4)
れぞれサイド堰を押圧して構成した湯溜り部へ溶湯を注
入し、前記冷却ドラムの回転により前記溶湯を冷却して
連続的に薄鋳片を鋳造するに際し、前記冷却ドラムの軸
方向両端面と前記サイド堰との間に生じた摩擦力を検出
し、該摩擦力に起因するサイド堰押圧力の増減圧力を求
めてサイド堰押圧力を制御し、しかる後該サイド堰押圧
力によって前記サイド堰を前記冷却ドラムの軸方向両端
面へ押圧することを特徴とする薄鋳片の連続鋳造機にお
けるサイド堰押圧力制御方法。1. Molten metal is poured into a pool formed by pressing side weirs on both axial end surfaces of a pair of cooling drums, and the molten metal is cooled by rotation of the cooling drums to continuously form a thin layer. When casting a piece, the frictional force generated between both axial end surfaces of the cooling drum and the side weir is detected, and the increase/decrease pressure in the side weir pressing force caused by the frictional force is determined to calculate the side weir pressing force. 1. A method for controlling a side weir pressing force in a continuous casting machine for thin slabs, comprising: controlling the side weir pressing force, and then pressing the side weir against both axial end surfaces of the cooling drum by the side weir pressing force.
軸方向両端面に押圧して設けたサイド堰とによって湯溜
り部を形成し、該湯溜り部内の溶湯を冷却ドラムの回転
によって冷却しつゝ連続的に薄鋳片を鋳造する双ドラム
式連続鋳造機において、前記サイド堰の支持部分に該サ
イド堰と前記冷却ドラムの両端面との間に生ずる摩擦力
を検出する摩擦力検出器を設け、更に該検出器による検
出値より摩擦力を演算する摩擦力演算装置と該摩擦力に
よるサイド堰押圧力の増減圧力を演算する押圧力加減演
算装置と該増減圧力信号に応じて作動する押圧力駆動制
御装置を設け、かつ該押圧力駆動制御装置からの調整圧
力信号によって駆動される押圧器を前記サイド堰に設け
たことを特徴とする薄鋳片の連続鋳造機におけるサイド
堰押圧力制御装置。2. A pool is formed by a pair of cooling drums and side weirs pressed against both axial end surfaces of the cooling drum, and the molten metal in the pool is cooled by rotation of the cooling drum. In a twin-drum continuous casting machine that continuously casts thin slabs, a friction force detector is provided at a supporting portion of the side weir to detect the frictional force generated between the side weir and both end surfaces of the cooling drum. furthermore, a friction force calculation device that calculates the friction force from the detected value by the detector, a pressing force adjustment calculation device that calculates the increase or decrease of the side weir pressing force due to the friction force, and a press force adjustment device that operates in response to the increase or decrease pressure signal. A side weir pressing force in a continuous casting machine for thin slabs, characterized in that a pressing force drive control device is provided, and a presser driven by an adjustment pressure signal from the pressing force drive control device is provided in the side weir. Control device.
設けた荷重検出器である請求項2記載の制御装置。3. The control device according to claim 2, wherein the frictional force detector is a load detector provided on a side weir support shaft.
曲げ検出器である請求項2記載の制御装置。4. The control device according to claim 2, wherein the frictional force detector is a bending detector of a side weir support shaft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2406593A JP2831136B2 (en) | 1990-12-26 | 1990-12-26 | Method and apparatus for controlling side dam pressing force in continuous casting machine for thin slab |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2406593A JP2831136B2 (en) | 1990-12-26 | 1990-12-26 | Method and apparatus for controlling side dam pressing force in continuous casting machine for thin slab |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04224052A true JPH04224052A (en) | 1992-08-13 |
JP2831136B2 JP2831136B2 (en) | 1998-12-02 |
Family
ID=18516218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2406593A Expired - Lifetime JP2831136B2 (en) | 1990-12-26 | 1990-12-26 | Method and apparatus for controlling side dam pressing force in continuous casting machine for thin slab |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2831136B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2721844A1 (en) * | 1994-06-30 | 1996-01-05 | Usinor Sacilor | METHOD AND DEVICE FOR CONTINUOUSLY CASTING THIN METAL PRODUCTS BETWEEN CYLINDERS |
US5584335A (en) * | 1994-06-30 | 1996-12-17 | Usinor-Sacilor | Device for continuous casting between rolls with applied side dams |
EP1088609A1 (en) * | 1999-09-24 | 2001-04-04 | Heinrich Marti Main Management Inspiration | Strip caster for producing a metal strip |
KR100954797B1 (en) * | 2007-12-20 | 2010-04-28 | 주식회사 포스코 | Method of edge dam load controlling in twin roll strip caster |
CN105562639A (en) * | 2016-02-26 | 2016-05-11 | 宝山钢铁股份有限公司 | Long-life application method of thin-strip continuous casting side sealing plate and device |
-
1990
- 1990-12-26 JP JP2406593A patent/JP2831136B2/en not_active Expired - Lifetime
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1064569C (en) * | 1994-06-30 | 2001-04-18 | 尤辛诺公司 | Method and device for continuous casting of thin metals products between rolls |
EP0692330A1 (en) * | 1994-06-30 | 1996-01-17 | USINOR SACILOR Société Anonyme | Process and installation for continuous casting thin metallic products between rolls |
US5584335A (en) * | 1994-06-30 | 1996-12-17 | Usinor-Sacilor | Device for continuous casting between rolls with applied side dams |
FR2721844A1 (en) * | 1994-06-30 | 1996-01-05 | Usinor Sacilor | METHOD AND DEVICE FOR CONTINUOUSLY CASTING THIN METAL PRODUCTS BETWEEN CYLINDERS |
USRE37214E1 (en) * | 1994-06-30 | 2001-06-12 | Usinor | Device for continuous casting between rolls with applied side dams |
EP1088609A1 (en) * | 1999-09-24 | 2001-04-04 | Heinrich Marti Main Management Inspiration | Strip caster for producing a metal strip |
WO2001023121A1 (en) * | 1999-09-24 | 2001-04-05 | Sms Demag Ag | Method for operating a strip-casting machine used for producing a metal strip and a corresponding strip-casting machine |
EA003382B1 (en) * | 1999-09-24 | 2003-04-24 | Смс Демаг Аг | Method for operating a strip-casting machine used for producing a metal strip and a corresponding strip-casting machine |
US6651729B1 (en) | 1999-09-24 | 2003-11-25 | Sms Demag Ag | Method for operating a strip-casting machine used for producing a metal strip and a corresponding strip-casting machine |
KR100741729B1 (en) * | 1999-09-24 | 2007-07-24 | 에스엠에스 데마그 악티엔게젤샤프트 | Method for operating a strip-casting machine used for producing a metal strip and a corresponding strip-casting machine |
KR100954797B1 (en) * | 2007-12-20 | 2010-04-28 | 주식회사 포스코 | Method of edge dam load controlling in twin roll strip caster |
CN105562639A (en) * | 2016-02-26 | 2016-05-11 | 宝山钢铁股份有限公司 | Long-life application method of thin-strip continuous casting side sealing plate and device |
CN105562639B (en) * | 2016-02-26 | 2018-10-02 | 宝山钢铁股份有限公司 | A kind of thin-strip casting side sealing plate long-life application method |
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