JPH0620608B2 - How to prevent hot water from a belt type continuous casting machine - Google Patents
How to prevent hot water from a belt type continuous casting machineInfo
- Publication number
- JPH0620608B2 JPH0620608B2 JP61166728A JP16672886A JPH0620608B2 JP H0620608 B2 JPH0620608 B2 JP H0620608B2 JP 61166728 A JP61166728 A JP 61166728A JP 16672886 A JP16672886 A JP 16672886A JP H0620608 B2 JPH0620608 B2 JP H0620608B2
- Authority
- JP
- Japan
- Prior art keywords
- metal belt
- mold
- short side
- belt
- water
- 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.)
- Expired - Lifetime
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
- B22D11/06—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)
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機の鋳造空間を構成
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）を制御して湯差しを防止する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a metal belt forming a casting space of a belt type continuous casting machine for directly continuously casting a thin cast piece such as a sheet bar from a molten metal, and a short mold. The present invention relates to a method of controlling a gap with a side (hereinafter, simply referred to as a gap) to prevent hot water.
（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 Patent Laid-Open No. 58-38642 discloses a belt type continuous casting machine having a casting space surrounded by a fixed side plate and a circulating member, that is, a mold short side 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
却盤から供給さ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 cools and supports the metal belt by forming a water film between the metal belt and the cooling board by cooling water supplied from a cooling board installed on the back surface of 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。(Problems to be solved by the invention) By the way, the external force applied to the metal belt is different between the both end regions of the metal belt and other regions due to changes in the tension applied to the metal belt and the static pressure of molten steel. A gap between both end areas is opened and molten steel penetrates into the gap, which causes the occurrence of a jug.
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 prevent the occurrence of hot water by controlling the gap between the metal belt and the short side of the mold.
（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パッドを背面
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
鋳造機における、該鋳型短辺と金属ベルトとの摺動部の
湯差しを防止するに当り、上記金属ベルトの背面に形成
する水膜の該金属ベルトの幅方向における圧力を、鋳型
短辺側で大きくかつ中央部で小さくし、金属ベルトの鋳
型短辺への押付力を金属ベルトの幅方向で変えて、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 is directed to a casting space including a metal belt having a cooling pad having a plurality of water supply / drainage ports arranged on the back surface and a mold short side arranged along the side edge of the metal belt. In the belt type continuous casting machine configured as described above, the pressure in the width direction of the metal belt of the water film formed on the back surface of the metal belt in preventing hot water in the sliding portion between the mold short side and the metal belt. Is large on the short side of the mold and small on the center side, and the pressing force of the metal belt on the short side of the mold is changed in the width direction of the metal belt to control the gap between the metal belt and the short side of the mold. This is a method of preventing hot water from being fed by a belt-type continuous casting machine.
また実施に当り、 金属ベルトの鋳型短辺への押付力が、３atm以下である
こと、 金属ベルトの厚みを除く鋳型短辺と冷却パッドとの間隙
δ（mm）を、鋳込み中の水膜厚みδｗ（mm）との関係で
次式； δ−0.2mm≦δｗ＜δ を満たすように制御すること、が有利に適合する。In addition, in carrying out, the pressing force of the metal belt on the short side of the mold is 3 atm or less, and the gap δ (mm) between the short side of the mold and the cooling pad excluding the thickness of the metal belt is defined as the water film thickness during casting. With respect to δw (mm), the following expression; δ−0.2 mm ≦ δw <δ is preferably controlled so as to satisfy.
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,3d,3e,3fを介して輪回移動す
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 mm以上であり、製造する薄鋳片７の厚みが50mm
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。In explaining the present invention in detail, first, the belt-type continuous casting machine shown in FIG. 1 has a plurality of guide rolls 3a while maintaining a gap for holding molten steel or a solidified shell over a predetermined distance. , 3b, 3c, 3d, 3e, 3f, which are circularly moved, are metal belts 1 and 2 which are long side surfaces arranged opposite to each other.
And the metal belts 1, 2 near the side edges of these metal belts.
And the mold short sides 4 and 5 which are in close contact with each other form a casting space. In particular, in the mold short sides 4 and 5, the diameter of the injection nozzle 6 is about 100 mm or more, and the thickness of the thin cast piece 7 to be manufactured is 50 mm.
Because of the following, the upper portion is wide and the width is gradually tapered toward the lower portion, and is a substantially inverted triangle having a constant width at the lower portion, and the refractory lining layers 4a and 5a are provided.
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(b)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
を交互に設けてある。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, as a cooling device, a second
A cooling pad 8 having a water supply port 9 and a drain port 10 is provided as shown in FIG. Water inlet 9 for this cooling pad
As shown in FIG. 2 (b), one row is provided in the width direction of the cooling pad, a drain hole 10 is provided in the next row, and a row of water supply ports is provided in the vertical direction of the cooling pad 8, that is, in the casting direction. Alternate rows of drains are provided. Then, the cooling water flowing out from the water supply port 9 is caused to flow into the drainage port 10 to form a water film 11 between the metal belt 1 and the cooling pad 8 as shown in FIG. Cools and supports.
さらに冷却パッド８の内部は第３図に示すように、金属
ベルト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
金属ベルト１(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−12a，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、金属ベルト１(2)の端面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 inside of the cooling pad 8 is composed of three water supply headers partitioned in the width direction of the metal belt 1 (2). That is, the water inlet 9 facing the back surface of both end regions of the metal belt 1 (2) in contact with the end surfaces of the mold short sides 4 and 5.
Headers 12a, 12b for controlling the water supply of the
The pressure of the water film 11 which is partitioned by the intermediate header 13 sandwiched between 12a and 12b and formed on the rear surface of the end surface of the metal belt 1 (2) is independently adjusted. By this adjustment, the pressing force of the metal belt against the short side of the mold is changed to control the gap, thereby preventing the water from 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 controlling the gap, at the boundary between the region where the molten steel or cast and the metal belt contact and the region where the molten steel or cast and the metal belt do not contact, for example, the ultrasonic type in which the water film thickness is embedded in the cooling pad 8 A water film thickness gauge is used to measure the water film pressure, for example, 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 with a load cell provided on the short side of the mold. The gap is controlled by changing the amount of water supplied into the water film from the water supply end headers 12a and 12b based on the value.
（作 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。(Operation) Next, the distribution of the external force applied to the metal belt and the water film pressure will be described with reference to FIG.
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
ΔＴ（℃）とした場合のベルトテンションは、それぞれ
下記式(1)，(2)で与えれる。In the casting space of the belt type continuous casting machine, there are a region A (a central portion of the metal belt) where molten steel or a slab comes into contact with the metal belt and a molten steel or a slab adjacent to the region A in the width direction of the metal belt. Area B where the metal belt does not contact
There is (closer to the side end of the metal belt), and the belt tension differs between the regions A and B due to the thermal stress generated in the casting space during casting. The belt tension when the temperature difference ΔT (° C.) of the metal belts in the regions A and B is given by the following equations (1) and (2), respectively.
記 ここで σ０；ベルトの初期張力（kg・mm-2） Ｘ；ベルト幅（mm） ｂ；鋳片幅（mm） 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，領域Ｂでの支持すべき必要な圧力PA，PBは以下の式
(3)，(4)で示される。Record Where σ 0 ; initial tension of the belt (kg · mm -2 ) X; belt width (mm) b; slab width (mm) Δσ = αΔTE where α: linear expansion coefficient of the belt E: Young's modulus of the belt As shown in FIGS. 1 and 2, when the short side of the mold faces the portion of the constant radius of curvature R of the cooling pad, the necessary pressures P A and P B to be supported in the regions A and B are as follows. Expression
It is indicated by (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≠PBとはならずσｔ＞＞σｃのためPA＜PBと
なるのが常である。Therefore, since P A ≠ P B does not hold and σ t >> σ c , P A <P B normally holds.
第３図(b)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。The pressures P A and P B and the water film pressure P W are shown in FIGS. 3 (b) and (c).
The relationship with
領域Ｂ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＜＜ＰAである
と、水膜切れが生じ、ベルト熱変形を生ずる。For P W <P B in the region B water feed occurs between the mold short side or belt, if it is P W >> P A in the region A, the water film thickness becomes thick, the variation of IhenAtsu and cooling Belt thermal deformation occurs due to insufficient performance, and if P W << P A , water film breakage occurs and belt thermal deformation occurs.
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。Therefore, it is advantageous to provide a pressure difference in the water film in the width direction of the metal belt.
さて次に下記に示す間隙制御を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, for the specific conditions for the gap control shown below,
It will be described according to the place shown in FIG.
記 (1) δ；０．１〜１．５mm (2) δ-0.2mm≦δｗ＜δ (3) ＰＦ≦３ atm（δ＝δｗのとき） ただし δ：設定間隔（金属ベルトの厚みを除く鋳型短
辺と冷却パッドとの間隙） 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0.1mm 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1.5mm 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 〜1.5m
m の範囲とした。Note (1) δ; 0.1 to 1.5 mm (2) δ-0.2 mm ≤ δw <δ (3) P F ≤ 3 atm (when δ = δw) where δ: Set interval (thickness of metal belt Except the gap between the short side of the mold and the cooling pad) δw: Water film thickness on the back surface of the end area of the metal belt P W : Pressing force on the short side of the metal belt First, if δ is less than 0.1 mm, the water film may not be secured If δ exceeds 1.5 mm, a large amount of water is required to secure the prescribed water film pressure, so δ is 0.1 to 1.5 m.
The range was m.
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−0.2mm ≦δ
ｗ≠δとした（第４図(a)参照）。Next, if δ W <δ-0.2 mm, then a slag is generated in the gap between the metal belt and the short side of the mold, so δ-0.2 mm ≤ δ.
It is assumed that w ≠ δ (see FIG. 4 (a)).
またδ＝δｗのときPw＞３ atm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、PF ≦３atm とした（第４図(b)参照）。When Pw> 3 atm when δ = δw, the wear between the metal belt and the short side of the mold is severe and the life of both is significantly reduced, so P F ≦ 3 atm (see FIG. 4 (b)). ).
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 describe the experiment that led to the above condition (3).
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チャージごとに変動さ
せ、各チャージごとに鋳型短辺部に相当する水膜圧力Ｐ
Ｗ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δＷ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 performing casting with a belt type continuous casting machine, the pressure of the water film formed on the back surface of the metal belt is changed for each charge, and the water film pressure P corresponding to the short side of the mold is obtained for each charge.
W is detected by a water film pressure gauge, and the pressing force P F 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 δ W is detected by an ultrasonic water film thickness gauge. Then, the occurrence rate of casting and the wear rate of the metal belt and the short side of the mold were examined.
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、 1) δ−δＷ≦0.2mm 、又は 2) δ＝δＷで鋳型短辺とベルト密着時のＰＦ≦３atm とすればよいことがわかる。As shown in FIG. 5, the results are as follows: 1) δ−δ W ≦ 0.2 mm, or 2) δ = δ W when the casting ratio is low and the wear ratio is low. It can be seen that P F ≦ 3 atm
（実施例） １ヒート160 トンの溶鋼（低炭アルミキルド鋼）を、SP
CC(JIS G31141)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40mm、幅800mm の薄鋳片を表１に示
す条件にて鋳造した。(Example) 1 heat 160 tons of molten steel (low carbon aluminum killed steel)
It is injected into a belt-type continuous casting machine that is made of CC (JIS G31141) and has a 1.2 mm thick metal belt and a short side of a mold in which fused silica is fixed to a Cu plate, and a thin slab with a thickness of 40 mm and a width of 800 mm is exposed. Casting was performed under the conditions shown in 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。 Upon 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 0.6mm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δ
ｗを0.5 〜0.6mm 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ＰＷは2.5 〜3.5atm、
領域Ａの水膜圧力ＰＷは0.3 〜0.9atmに調整した 具体的には、鋳込み中の鋳型短辺にかかる押付力Ｐ
Ｆを、鋳型短辺のCu板にロードセルを取付けて検知し、
PF 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。Also, prior to casting, the set gap δ was set to 0.6 mm, and the water film thickness δ corresponding to the boundary region between the short side of the mold and the molten steel during casting was δ.
Water film pressure in area B so that w is in the range of 0.5 to 0.6 mm
Pw was adjusted by the amount of water supplied to the end header of the cooling pad. The water film pressure P W in the region B is 2.5 to 3.5 atm,
The water film pressure P W in the region A was adjusted to 0.3 to 0.9 atm. Specifically, the pressing force P applied to the short side of the mold during casting.
F is detected by attaching a load cell to the Cu plate on the short side of the mold,
The water film pressure Pw was adjusted by changing the amount of supplied water so that P F 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 the control was performed, no jug was generated during casting,
The wear of the metal belt and the short side of the mold after casting was extremely slight.
（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 a hot water bottle, it is possible to reduce the wear of the metal belt and the short sides of the mold, and the 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(b)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……中間部ヘッダー1 is an explanatory view of a belt type continuous casting machine, FIG. 2 is an explanatory view of a cooling pad, FIG. 1 (a) is a view showing the arrangement, FIG. 1 (b) is a front view, and FIG. A side view, FIG. 3 is a diagram showing the belt tension distribution, the water film pressure distribution, and the internal structure of the cooling pad, and FIG. 4 is a graph showing the relationship between the pressing force of the metal belt and the water film pressure, the water film thickness, and the set gap. FIG. 5 is an explanatory diagram showing the casting rate and wear rate. 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 ...... Drainage Mouth 12a, 12b …… End header 13 …… Intermediate part header
フロントページの続き (72)発明者 藤井 徹也 千葉県千葉市川崎町１番地 川崎製鉄株式 会社技術研究本部内 (72)発明者 久我 正昭 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 森脇 三郎 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 安川 登 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 田村 望 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (72)発明者 木村 智明 茨城県日立市幸町３−１―１ 株式会社日 立製作所日立工場内 (56)参考文献 特開 昭58−110161（ＪＰ，Ａ)Front Page Continuation (72) Inventor Tetsuya Fujii 1 Kawasaki-cho, Chiba-shi, Chiba Inside Technical Research Division, Kawasaki Steel Co., Ltd. (72) Inventor Masaaki Kuga 1 Kawasaki-cho, Chiba-shi Chiba Steel Co., Ltd. ( 72) Inventor Saburo Moriwaki 1 Kawasaki-cho, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Works (72) Inventor Noboru Yaskawa 1 Kawasaki-cho, Chiba Chiba Prefecture Kawasaki Steel Co., Ltd. Chiba Works (72) Inventor Nozomi Tamura 1 Kawasaki-machi, Chiba-shi, Chiba Inside Kawasaki Steel Co., Ltd. Chiba Works (72) Inventor Tomoaki Kimura 3-1-1 Saiwaicho, Hitachi-shi, Ibaraki Hitachi Factory, Hitachi, Ltd. (56) Reference: JP-A-58 -110161 (JP, A)
Claims (3)
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
鋳造機における、該鋳型短辺と金属ベルトとの摺動部の
湯差しを防止するに当り、 上記金属ベルトの背面に形成する水膜の該金属ベルトの
幅方向における圧力を、鋳型短辺側で大きくかつ中央部
で小さくし、金属ベルトの鋳型短辺への押付力を金属ベ
ルトの幅方向で変えて、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。1. A belt type continuous casting machine in which a casting space is constituted by a metal belt having a cooling pad having a plurality of water supply / drainage ports on the back surface and a mold short side arranged along a side edge portion of the metal belt. In order to prevent hot water in the sliding portion between the mold short side and the metal belt, the pressure in the width direction of the metal belt of the water film formed on the back surface of the metal belt is increased on the short side of the mold and A belt-type continuous casting machine with a small size at the center, and the gap between the metal belt and the mold short side is controlled by changing the pressing force of the metal belt to the mold short side in the width direction of the metal belt. Rejection prevention method.
m 以下であることを特徴とする特許請求の範囲第１項に
記載の湯差し防止方法。2. The pressing force of the metal belt against the short side of the mold is 3 at.
The method for preventing water from pouring according to claim 1, characterized in that it is m or less.
ッドとの間隙δ（mm）を、鋳込み中の水膜厚みδw （m
m）との関係で次式； δ−0.2mm≦δw ＜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項に記載の湯差し防止方法。3. The gap δ (mm) between the cooling pad and the short side of the mold excluding the thickness of the metal belt is defined by the water film thickness δw (m
The method for preventing water from pouring according to claim 1, characterized in that it is controlled so as to satisfy the following equation: δ−0.2 mm ≦ δw <δ in relation to m).
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. |
| BR8604827A BR8604827A (en) | 1985-10-03 | 1986-10-03 | CONTINUOUS FOUNDER SHEET FUNDER AND PROCESS FOR PREVENTION OF CAST MATERIAL LEAKAGE |
| CN87105618A CN1007497B (en) | 1985-10-03 | 1986-10-03 | Belt Continuous Casting Machine |
| KR1019860008366A KR910000126B1 (en) | 1985-10-03 | 1986-10-03 | Belt type cast sheet continous caster and prevention of melt leakage in such a caster |
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 JPS6326246A (en) | 1988-02-03 |
| JPH0620608B2 true 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) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110161A (en) * | 1981-12-23 | 1983-06-30 | Hitachi Ltd | Continuous casting equipment |
-
1986
- 1986-07-17 JP JP61166728A patent/JPH0620608B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6326246A (en) | 1988-02-03 |
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