JPS6326246A - Method for preventing metal penetration of belt type continuous casting machine - Google Patents
Method for preventing metal penetration of belt type continuous casting machineInfo
- Publication number
- JPS6326246A JPS6326246A JP61166728A JP16672886A JPS6326246A JP S6326246 A JPS6326246 A JP S6326246A JP 61166728 A JP61166728 A JP 61166728A JP 16672886 A JP16672886 A JP 16672886A JP S6326246 A JPS6326246 A JP S6326246A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- mold
- metal belt
- short side
- water film
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 66
- 239000002184 metal Substances 0.000 title claims abstract description 66
- 238000009749 continuous casting Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000035515 penetration Effects 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000005266 casting Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 230000002265 prevention Effects 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 101100492805 Caenorhabditis elegans atm-1 gene Proteins 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008646 thermal stress 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0677—Accessories therefor for guiding, supporting or tensioning the casting belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、溶融金属からシートバーのような薄鋳片を
直接連続鋳造するベルト式連続鋳造成の鋳造空間を構成
する金属ベルトと鋳型短辺との間隙（以下単に間隙とい
う）を制御して湯差し本防止する方法に関する。Detailed Description of the Invention (Field of Industrial Application) This invention relates to a metal belt and a mold shortcut that constitute the casting space of belt-type continuous casting, which directly and continuously casts thin slabs such as sheet bars from molten metal. The present invention relates to a method of controlling the gap between the sides (hereinafter simply referred to as the gap) to prevent hot water from forming.
（従来の技術）
特開昭５８−３８６４２号公報には、固定側板と循環体
、すなわち鋳型短辺と金属ベルトとで囲まれた鋳造空間
を備えたベルト式連続鋳造機についての開示がある。(Prior Art) Japanese Unexamined Patent Publication No. 58-38642 discloses a belt-type continuous casting machine having a casting space surrounded by a fixed side plate, a circulating body, that is, a short side of the mold, and a metal belt.
該ベルト式連続鋳造機は金属ベルトの背面に設置した冷
却盤から供給きれる冷却水によって、金属ベルトと冷却
盤との間に水膜を形成し、金属ベルトの冷却および支持
を行っている。The belt type continuous casting machine uses cooling water completely supplied from a cooling plate installed on the back side of the metal belt to form a water film between the metal belt and the cooling plate to cool and support the metal belt.
（発明が解決しようとする問題点）
ところで金属ベルトにかかる外力は、金属ベルトに加わ
る張力や溶鋼静圧の変動などによって、金属ベルトの両
側端域とその他の領域とで異なるため、とくに金属ベル
ト両側端域の間隙が開いてそこに溶鋼が侵入し、湯差し
の発生原因となる。(Problem to be Solved by the Invention) By the way, the external force applied to the metal belt differs between the end areas of the metal belt and other areas due to the tension applied to the metal belt and fluctuations in the static pressure of molten steel. Gaps open at both end areas and molten steel enters there, causing the formation of hot water.
そこで金属ベルトと鋳型短辺との間隙を制御し湯差しの
発生を防止することが、この発明の目的である。Therefore, it is an object of the present invention to control the gap between the metal belt and the short side of the mold to prevent the occurrence of hot water.
（問題点を解決するための手段）
この発明は、複数の給排水口を有する冷却装置を背面に
配した金属ベルトと、該金属ベルトの側縁部に沿って配
置した鋳型短辺とで鋳造空間を構成したベルト式連続鋳
造機について、該鋳型短辺と金属ベルトとの摺動部にお
ける湯差しを防止するに当り、上記金属ベルトの鋳型短
辺への押付力を変えて金属ベルトと鋳型短辺との間隙を
制御することを特徴とするベルト式連続鋳造機の湯差し
防止方法である。(Means for Solving the Problems) The present invention provides a casting space formed by a metal belt having a cooling device arranged on the back side having a plurality of water supply and drainage ports, and a mold short side arranged along the side edge of the metal belt. Regarding the belt type continuous casting machine, in order to prevent pouring at the sliding part between the short side of the mold and the metal belt, the pressing force of the metal belt to the short side of the mold is changed to prevent the short side of the metal belt and the short side of the mold. This is a method for preventing hot water pouring in a belt type continuous casting machine, which is characterized by controlling the gap between the belt and the sides.
また実施に当り、
金属ベルトの鋳型短辺への押付力を、金属ベルト背面の
水膜に施す該金属ベルトの幅方向にわたる差圧制御を鋳
型短辺側で大きく中央部を小さくすることによって実現
すること、
金属ベルトの鋳型短辺への押付力が、３ａｔｍ以。In addition, during implementation, the pressing force of the metal belt against the short side of the mold was realized by controlling the differential pressure across the width of the metal belt, which was applied to the water film on the back side of the metal belt, by making the short side of the mold larger and the center part smaller. The pressing force of the metal belt against the short side of the mold is 3 atm or more.
下であること、
金属ベルトと鋳型短辺との間隙δ（＋＋＋ｍ）を、鋳込
み中の水膜厚み６ｗ（＋ｎｍ）との関係で次式；δ−Ｑ
、 ２ｍｍ≦δＷくδを満たすように制御すること、が
有利に適合する。The gap δ (+++m) between the metal belt and the short side of the mold is determined by the following formula; δ-Q in relation to the water film thickness 6w (+nm) during casting.
, 2mm≦δW and δ is advantageously controlled.
次にこの発明を具体的に説明するに当り、まず第１図に
示すベルト式連続鋳造機は、所定の距離にわたって溶鋼
や凝固シェルを保持するための間隙を維持しつつ、複数
のガイドロール３ａ、 ３ｂ、 ３ｃ。Next, in specifically explaining the present invention, the belt type continuous casting machine shown in FIG. , 3b, 3c.
３ｄ、 ３ｅ、 ３ｆを介して軸回移動する対向して配
置された長辺面となる金属ベルト１．２と、これらの金
属ベルトの側縁近傍で金属ベルト１．２と緊密に接して
いる鋳型短辺４，５とで鋳造空間を構成している。特に
、鋳型短辺４，５は、注入ノズル６の径が約１００ ｍ
ｍ以上であり、製造する薄鋳片７の厚みが５０＋ｎｍ以
下であるために、上部が広幅で下部に向うに従って順次
先細りとなり、下部で一定の幅となる略逆三角形となっ
ており、耐火物の内張り層４ａ、５ａをもつ構造となっ
ている。3d, 3e, and 3f, the metal belts 1.2 are oppositely arranged long side surfaces, and are in close contact with the metal belt 1.2 near the side edges of these metal belts. The short sides 4 and 5 of the mold constitute a casting space. In particular, the diameter of the injection nozzle 6 on the short sides 4 and 5 of the mold is approximately 100 m.
m or more, and the thickness of the thin slab 7 to be manufactured is 50+nm or less, so it is wide at the top, gradually tapering toward the bottom, and has a constant width at the bottom, forming an approximately inverted triangle shape. The structure has lining layers 4a and 5a.
また金属ベルト１，２の背面には冷却装置として、第２
図（ａ）に示すように給゛水口９と排水口１０を備える
冷却パッド８が設けられている。この冷却パッドの給水
口９は、第２図（５）に示すように冷却パッドの幅方向
に一列設けられ、次の列に排水孔１０が設けられ、以下
冷却パッド８の縦方向、即ち鋳造方向に給水口の列と排
水口の列を交互に設けである。そして給水口９から流出
する冷却水を排水口１０に流入させることにより、第２
図（Ｃ）に示すように金属ベルト１と冷却パッド８との
間に水膜１１を形成させて金属ベルトを冷却・支持して
いる。In addition, a second cooling device is installed on the back of the metal belts 1 and 2.
As shown in Figure (a), a cooling pad 8 having a water supply port 9 and a drain port 10 is provided. The water supply ports 9 of this cooling pad are provided in one row in the width direction of the cooling pad as shown in FIG. 2 (5), and the drain holes 10 are provided in the next row. Rows of water supply ports and rows of drain ports are provided alternately in the direction. By causing the cooling water flowing out from the water supply port 9 to flow into the drain port 10, the second
As shown in Figure (C), a water film 11 is formed between the metal belt 1 and the cooling pad 8 to cool and support the metal belt.
さらに冷却パッド８の内部は第３図に示すように、金属
ベル） １ （２）の幅方向に区画した３つの給水用ヘ
ッダーからなる。すなわち鋳型短辺４および５の端面と
接する金属ベル） ｌ （２）の両端部域の背面に対向
した給水口９の給水を司る端部ヘッダー１２１．１２ｂ
と、該端部ヘッダー１２ａと１２ｂとに挟まれた中間部
ヘッダー１３とに区画され、金属ベル）１（２）の端部
背面に形成する水膜１１の圧力を独立に調整する。該調
整によって金属ベルトの鋳型短辺への押付力を変えて間
隙の制御を行って、湯差しを防ぐ。Furthermore, as shown in FIG. 3, the interior of the cooling pad 8 consists of three water supply headers partitioned in the width direction of a metal bell (2). In other words, the end header 121.12b that controls the water supply of the water supply port 9 facing the back side of both end areas of (2) metal bell in contact with the end surfaces of the mold short sides 4 and 5)
and an intermediate header 13 sandwiched between the end headers 12a and 12b, and independently adjust the pressure of the water film 11 formed on the end back surface of the metal bell) 1 (2). Through this adjustment, the pressing force of the metal belt against the short side of the mold is changed to control the gap and prevent pouring.
そして間隙の制御に当り、溶鋼又は鋳片と金属ベルトと
が接触する領域および溶鋼又は鋳片と金属ベルトとが接
触しない領域の境界で、水膜厚みをたとえば冷却パッド
８に埋め込んだ超音波式水膜厚み計により、水膜圧力を
たとえば冷却パッド８に埋め込んだ半導体式圧力計によ
り、また鋳型短辺にかかる金属ベルトの押付力は鋳型短
辺に設けたロードセルでそれぞれ測定し、これらの測定
値に基づき上記給水用の端部ヘッダー１２ａ、 １２ｂ
から水膜内への供給水量を変化させることにより間隙の
制御を実施する。In order to control the gap, an ultrasonic method is used to increase the thickness of the water film at the boundary between the area where the molten steel or slab comes into contact with the metal belt and the area where the molten steel or slab does not come into contact with the metal belt. The water film pressure is measured by a water film thickness meter, for example, by a semiconductor pressure gauge embedded in the cooling pad 8, and the pressing force of the metal belt applied to the short side of the mold is measured by a load cell installed on the short side of the mold. Based on the value, the end header 12a, 12b for the water supply
The gap is controlled by changing the amount of water supplied into the water film.
（イ乍 用）
次に金属ベルトにかかる外力および水膜圧力の分布につ
いて、第３図を参照して説明する。(For I) Next, the distribution of external force and water film pressure applied to the metal belt will be explained with reference to FIG. 3.
ベルト式連続鋳造機における鋳造空間には、金属ベルト
の幅方向へわたって、溶鋼又は鋳片と金属ベルトとが接
触する領域Ａ（金属ベルト中央部）および領域Ａに隣接
する溶鋼又は鋳片と金属ベルトとが接触しない領域Ｂ（
金属ベルトの側端部寄り）があり、領域ＡとＢとでは鋳
込中の鋳造空間に生じる熱応力により、ベルトテンショ
ンが異なる。領域Ａ、Ｂにおける金属ベルトの温度差Δ
Ｔ（℃）とした場合のベルトテンションは、それぞれ下
記式（１）、（２）で与えられる。The casting space in a belt-type continuous casting machine includes an area A (center part of the metal belt) where the molten steel or slab comes into contact with the metal belt in the width direction of the metal belt, and a region A where the molten steel or slab comes into contact with the molten steel or slab adjacent to area A. Area B where there is no contact with the metal belt (
The belt tension is different in areas A and B due to thermal stress generated in the casting space during casting. Temperature difference Δ between metal belts in areas A and B
The belt tension when T (° C.) is given by the following formulas (1) and (2), respectively.
記
σ、＝σ０十−・Δσ ・・・（２）ここで σ
。；ベルトの初期張力（ｋｇ −ｍｎｒ２）Ｘ：ベルト
幅（ｍｍ）
ｂ；鋳片幅（＋＋＋ｍ）
Δσ＝αΔＴＥ
ただし α：ベルトの線膨張係数
Ｅ：ベルトのヤング率
また第１および２図に示すように、鋳型短辺部が冷却パ
ッドの一定曲率半径Ｒの部分に面している場合、領域Ａ
、領領域での支持すべき必要な圧力ＰＡ、 Ｐａは以下
の式（３）、 （４）で示される。Note σ, = σ0−・Δσ ... (2) where σ
. ; Initial tension of the belt (kg - mnr2) If the short side of the mold faces the cooling pad with a constant radius of curvature R, then the area A
, the necessary pressure PA to be supported in the area, Pa is shown by the following equations (3) and (4).
■ ここで、ｈはベルト厚である。■ Here, h is the belt thickness.
従って、ＰＡ ＊Ｐｓ とはならずσ、〉〉σ。のため
ＦＡ ＜ｐａとなるのが常である。Therefore, PA *Ps does not hold, but σ, 〉〉σ. Therefore, it is usual that FA<pa.
第３図（５）および（Ｃ）に、上記圧力ＰＡ 、 ＰＢ
と水膜圧力Ｐｗとの関係を示した。In Fig. 3 (5) and (C), the above pressures PA and PB are shown.
The relationship between Pw and water film pressure Pw is shown.
領領域においてＰｗ＜ＰＢの場合は鋳型短辺またはベル
ト間に湯差しが生じ、領域ＡにおいてＰｗ＞＞ＰＡであ
ると、水膜厚みが厚くなり、鋳片厚の変動および冷却能
不足によるベルト熱変形が生じ、そしてＰｗ＜くＰＡで
あると、水膜切れが生じ、ベルト熱変形を生ずる。If Pw < PB in the region A, a hot water drop will occur between the short sides of the mold or between the belt, and if Pw >> PA in the region A, the water film will become thicker and the belt will be damaged due to fluctuations in slab thickness and insufficient cooling capacity. Thermal deformation occurs, and if Pw < PA, water film breakage occurs, resulting in belt thermal deformation.
したがって、金属ベルトの幅方向で水膜に圧力差を設け
るのが有利である。It is therefore advantageous to provide a pressure difference in the water film across the width of the metal belt.
さて次に下記に示す間隙制御の具体的な条件について、
第４図に示したところに従い述べる。Now, regarding the specific conditions for gap control shown below,
The description will be made according to the part shown in Fig. 4.
記
（１） δ： ０．１ 〜１．５ｍｍ（２）δ−０，
２ｍｍ≦δＷくδ
（３） Ｐｐ ≦３ ａｔｍ（δ＝ δ智のとき）た
だし δ：設定間隙
δＷ：金属ベルト端部域背面の水膜厚みＰｗ：金属ベル
トの短辺側への押付力
まずδをＱ、１ｍｍ未満にすると水膜を確保できないお
それがあり、またδがｌ、 ５ｍｍをこえると所定の水
膜圧力を確保するのに大量の水が必要となるため、δを
０．１〜１．５ｍｍの範囲とした。(1) δ: 0.1 to 1.5 mm (2) δ-0,
2mm≦δW×δ (3) Pp ≦3 atm (when δ=δ), where δ: Setting gap δW: Thickness of water film on the back side of the end area of the metal belt Pw: Pressing force on the short side of the metal belt If δ is less than Q, 1 mm, there is a risk that a water film cannot be secured, and if δ exceeds 1, 5 mm, a large amount of water will be required to ensure the specified water film pressure, so δ should be set to 0.1. The range was 1.5 mm.
次いで、δＷ〈δ−０，２ｍｍであると、金属ベルトと
鋳型短辺との間隙に湯差しが発生するため、δ−０，２
１７１１７１≦δＷくδとした（第４図（ａ）参照）。Next, if δW<δ-0.2mm, a hot water drop will occur in the gap between the metal belt and the short side of the mold, so δW<δ-0.2mm.
171171≦δW (see FIG. 4(a)).
またδ＝δＷのときｐｗ＞３ａｔｍであると、金属ベル
トと鋳型短辺との間の摩耗が激しく両者の寿命が著しく
低下するため、Ｐｐ≦３ａｔｍとした（第４図ら）参照
）。Furthermore, if pw>3 atm when δ=δW, the wear between the metal belt and the short side of the mold would be severe and the life span of both would be significantly shortened, so Pp≦3 atm was set (see FIG. 4, etc.).
ここで上記（３）の条件を導くに至った実験について述
べる。Here, we will describe the experiment that led us to the condition (3) above.
ベルト式連続鋳造機にて鋳造を行うに当り、金属ベルト
の背面に形成した水膜の圧力を１チヤージごとに変動さ
せ、各チャージごとに鋳型短辺部に相当する水膜圧力Ｐ
、を水膜圧力計により、また金属ベルトが鋳型短辺に及
ぼす押付力ＰＦを鋳型短辺に取付けたロードセルによっ
て、それぞれ検出するとともに、水膜厚みδ１を超音波
式水膜厚み計により検出し、鋳張り発生率および金属ベ
ルト、鋳型短辺の摩耗比率を調べた。When casting with a belt-type continuous casting machine, the pressure of the water film formed on the back of the metal belt is varied for each charge, and the water film pressure P corresponding to the short side of the mold is adjusted for each charge.
, is detected by a water film pressure gauge, the pressing force PF exerted by the metal belt on the short side of the mold is detected by a load cell attached to the short side of the mold, and the water film thickness δ1 is detected by an ultrasonic water film thickness meter. , the occurrence rate of overcasting and the wear ratio of the metal belt and the short side of the mold were investigated.
この結果を第５図に示すように、鋳張り発生率が低くか
つ摩耗比率も低い範囲は、
■） δ−δ。≦０．２ｎ＋ａ＋ 、 又ハ２） δ＝
δ１での鋳型短辺とベルト密着時のＰＦ≦３ ａｔｍ
とすればよいことがわかる。As shown in Fig. 5, the range in which the occurrence rate of overcasting is low and the wear ratio is also low is (1) δ-δ. ≦0.2n+a+, also C2) δ=
It can be seen that the PF when the short side of the mold and the belt are in close contact at δ1 should be 3 atm.
（実施例）
１ヒート１６０トンの溶鋼（低次アルミキルド鋼）を、
５ＰＣＣ（ＪＩＳ Ｇ３１４１）製で１．２ｍｍ厚の金
属ベルトと、溶融シリカをＣｕ板に固定した鋳型短辺と
を備えるベルト式連続鋳造機に注入し、厚さ４Ｑｍｍ、
幅８００ｍｍの薄鋳片を表１に示す条件にて鋳造した。(Example) 160 tons of molten steel (low-order aluminum killed steel) in one heat,
It was poured into a belt-type continuous casting machine equipped with a 1.2 mm thick metal belt made of 5PCC (JIS G3141) and the short side of a mold in which fused silica was fixed to a Cu plate, and the molten silica was poured into a belt-type continuous casting machine with a thickness of 4 Q mm.
A thin slab with a width of 800 mm was cast under the conditions shown in Table 1.
表 １
鋳込みに当り、第２図に示した冷却パッドを用いて、金
属ベルトの背面に水膜を形成した。Table 1 During casting, a water film was formed on the back surface of the metal belt using the cooling pad shown in FIG.
また鋳込みに先立ち設定間隙δを０．６＋ｎｍとし、鋳
込み中の鋳型短辺と溶鋼部との境界領域に相当する水膜
厚みδＷを０．５〜Ｑ、５＋ｙ＋ｍの範囲とするよう、
領域Ｂの水膜圧力Ｐｗを冷却パッドの端部ヘッダーへ供
給する水量によって調整した。なお領域Ｂの水膜圧力Ｐ
ｗは２．５〜３．５ａｔｍ、領域Ａの水膜圧力Ｐｗは０
．３〜０．９ａｔｍ １．：調整した。In addition, prior to casting, the set gap δ is set to 0.6+nm, and the water film thickness δW corresponding to the boundary area between the short side of the mold and the molten steel part during pouring is set in the range of 0.5 to Q,5+y+m.
The water film pressure Pw in region B was adjusted by the amount of water supplied to the end header of the cooling pad. Note that the water film pressure P in area B
w is 2.5 to 3.5 atm, water film pressure Pw in area A is 0
．． 3-0.9 atm 1. :It was adjusted.
具体的には、鋳込み中の鋳型短辺にかかる押付力Ｐｐを
、鋳型短辺のＣｕ板にロードセルを取付けて検知し、Ｐ
ｐが常時０〜１．５ａｔｍの範囲にあるように水膜圧力
Ｐｗを供給水量の変化により調整した。Specifically, a load cell is attached to the Cu plate on the short side of the mold to detect the pressing force Pp applied to the short side of the mold during pouring.
The water film pressure Pw was adjusted by changing the amount of water supplied so that p was always in the range of 0 to 1.5 atm.
該制御を行ったところ、鋳込み中に湯差しは発生せず、
鋳造後の金属ベルトおよび鋳型短辺の摩耗は極めてわず
かであった。When this control was carried out, no hot water was generated during casting, and
There was very little wear on the metal belt and short sides of the mold after casting.
（発明の効果）
この発明によれば、湯差しの発生防止のほか、金属ベル
トおよび鋳型短辺の損耗軽減を達成でき、鋳込みを安定
して行い得る。(Effects of the Invention) According to the present invention, in addition to preventing the occurrence of hot water, wear and tear on the metal belt and the short sides of the mold can be reduced, and casting can be performed stably.
第１図はベルト式連続鋳造機の説明図、第２図は冷却パ
ッドの説明図で、同図（ａ）は配置を示す図、同図ら）
は正面図、同図（Ｃ）は側面図、第３図はベルトテンシ
ョン分布、および水膜圧分布および冷却パッドの内部構
造を示す図、第４図は金属ベルトの押付力と水膜圧力と
の関係および水膜厚みと設定間隙を示す説明図、第５図
は鋳張り発生率および摩耗比率を示すグラフである。
１．２−金属ベルト
３ａ〜３ｆ ガイドロール
４．５ 鋳型短辺 ６−注入ノズル７ 薄鋳片
８−冷却パッド９ 給水口 １０・
排水口
１２ａ、 １２ｂ・・・端部ヘッダー
１３ 中間部へラダー
第１図
第３図
（ａン
第４図
（ａ）
（ｂ）Figure 1 is an explanatory diagram of the belt-type continuous casting machine, Figure 2 is an explanatory diagram of the cooling pad, and Figure (a) is a diagram showing the arrangement.
is a front view, (C) is a side view, Fig. 3 is a diagram showing the belt tension distribution, water film pressure distribution, and internal structure of the cooling pad, and Fig. 4 is a diagram showing the pressing force of the metal belt and the water film pressure. FIG. 5 is an explanatory diagram showing the relationship between water film thickness and set gap, and FIG. 5 is a graph showing the occurrence rate of overcasting and the wear ratio. 1.2-Metal belt 3a to 3f Guide roll 4.5 Short side of mold 6-Injection nozzle 7 Thin slab
8-Cooling pad 9 Water supply port 10・
Drain ports 12a, 12b... End header 13 Ladder to the middle part Fig. 1 Fig. 3 (a) Fig. 4 (a) (b)
Claims (1)
属ベルトと、該金属ベルトの側縁部に沿って配置した鋳
型短辺とで鋳造空間を構成したベルト式連続鋳造機につ
いて、該鋳型短辺と金属ベルトとの摺動部における湯差
しを防止するに当り、 上記金属ベルトの鋳型短辺への押付力を変 えて金属ベルトと鋳型短辺との間隙を制御することを特
徴とするベルト式連続鋳造機の湯差し防止方法。 ２、金属ベルトの鋳型短辺への押付力を、金属ベルト背
面の水膜に施す該金属ベルトの幅方向にわたる差圧制御
を鋳型短辺側を大きく中央部を小さくすることによって
実現することを特徴とする特許請求の範囲第１項に記載
の防止方法。 ３、金属ベルトの鋳型短辺への押付力が、３ａｔｍ以下
であることを特徴とする特許請求の範囲第１項に記載の
防止方法。 ４、金属ベルトと鋳型短辺との間隙δ（ｍｍ）を、鋳込
み中の水膜厚みδｗ（ｍｍ）との関係で次式； δ−０．２ｍｍ≦δ＿Ｗ＜δ を満たすように制御することを特徴とする特許請求の範
囲第１項に記載の防止方法。[Claims] 1. A continuous belt type in which a casting space is formed by a metal belt with a cooling device on the back side having a plurality of water supply and drainage ports, and a mold short side arranged along the side edge of the metal belt. Regarding the casting machine, in order to prevent pouring at the sliding part between the short side of the mold and the metal belt, the gap between the metal belt and the short side of the mold is controlled by changing the pressing force of the metal belt on the short side of the mold. A method for preventing hot water pouring in a belt-type continuous casting machine. 2. The pressing force of the metal belt against the short side of the mold is applied to the water film on the back surface of the metal belt, and the differential pressure across the width of the metal belt is controlled by making the short side of the mold large and the central part small. A prevention method according to claim 1, characterized in that: 3. The prevention method according to claim 1, wherein the pressing force of the metal belt against the short side of the mold is 3 atm or less. 4. Control the gap δ (mm) between the metal belt and the short side of the mold in relation to the water film thickness δw (mm) during casting so that it satisfies the following equation: δ-0.2mm≦δ_W<δ The prevention method according to claim 1, characterized in that:
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61166728A JPH0620608B2 (en) | 1986-07-17 | 1986-07-17 | How to prevent hot water from a belt type continuous casting machine |
| US06/914,015 US4759400A (en) | 1985-10-03 | 1986-10-01 | Belt type cast sheet continuous caster and prevention of melt leakage in such a caster |
| EP86307610A EP0222494B1 (en) | 1985-10-03 | 1986-10-02 | Belt type cast sheet continuous caster and method for prevention of melt leakage in such caster |
| DE8686307610T DE3668809D1 (en) | 1985-10-03 | 1986-10-02 | CONSTRUCTION BELT CASTING PLANT AND METHOD FOR MELT OUTLET PREVENTION IN SUCH A CASTING PLANT. |
| KR1019860008366A KR910000126B1 (en) | 1985-10-03 | 1986-10-03 | Belt type cast sheet continous caster and prevention of melt leakage in such a caster |
| CN87105618A CN1007497B (en) | 1985-10-03 | 1986-10-03 | Belt type cast sheet continuous caster and prevention of metal leakage in such a caster |
| BR8604827A BR8604827A (en) | 1985-10-03 | 1986-10-03 | CONTINUOUS FOUNDER SHEET FUNDER AND PROCESS FOR PREVENTION OF CAST MATERIAL LEAKAGE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61166728A JPH0620608B2 (en) | 1986-07-17 | 1986-07-17 | How to prevent hot water from a belt type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6326246A true JPS6326246A (en) | 1988-02-03 |
| JPH0620608B2 JPH0620608B2 (en) | 1994-03-23 |
Family
ID=15836646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61166728A Expired - Lifetime JPH0620608B2 (en) | 1985-10-03 | 1986-07-17 | How to prevent hot water from a belt type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620608B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110161A (en) * | 1981-12-23 | 1983-06-30 | Hitachi Ltd | Continuous casting device |
-
1986
- 1986-07-17 JP JP61166728A patent/JPH0620608B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110161A (en) * | 1981-12-23 | 1983-06-30 | Hitachi Ltd | Continuous casting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0620608B2 (en) | 1994-03-23 |
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