JPH11104796A - Immersion nozzle for continuous casting thin and wide slab - Google Patents
Immersion nozzle for continuous casting thin and wide slabInfo
- Publication number
- JPH11104796A JPH11104796A JP27797097A JP27797097A JPH11104796A JP H11104796 A JPH11104796 A JP H11104796A JP 27797097 A JP27797097 A JP 27797097A JP 27797097 A JP27797097 A JP 27797097A JP H11104796 A JPH11104796 A JP H11104796A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- long side
- side wall
- nozzle
- immersion nozzle
- 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.)
- Withdrawn
Links
Landscapes
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は連続鋳造によって例
えば厚み１００ｍｍ以下、幅１０００ｍｍ以上の薄肉広
幅のスラブ鋳片を鋳造するための浸漬ノズルに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an immersion nozzle for casting a thin and wide slab slab having a thickness of, for example, 100 mm or less and a width of 1000 mm or more by continuous casting.
【０００２】[0002]
【従来の技術】近年、後工程の省力化を目指してスラブ
鋳片（以下、単にスラブという）を薄肉化する傾向があ
るが、それに伴って浸漬ノズルを扁平形状にする必要が
生じている。2. Description of the Related Art In recent years, there has been a tendency to reduce the thickness of a slab cast piece (hereinafter simply referred to as a slab) in order to save labor in a post-process, and accordingly, it has become necessary to make an immersion nozzle flat.
【０００３】しかし、溶湯流量を確保する必要上、ノズ
ルの扁平化には自ずと限界がある。そのため薄肉広幅の
スラブの鋳造においては、鋳型長辺とノズルの間隔が従
来のスラブ鋳造に比べて必然的に狭くなり、その部分に
溶湯が凝固して鋳型とノズルをブリッジする所謂地金張
りが発生する危険性が高い。However, the flattening of the nozzle is naturally limited due to the necessity of securing the flow rate of the molten metal. Therefore, in the casting of thin and wide slabs, the distance between the long side of the mold and the nozzle is inevitably narrower than in the conventional slab casting. High risk of occurrence.
【０００４】地金張りを防止するためには、外部から熱
を加えて地金を溶解する方法が考えられる。しかし薄肉
化に伴って鋳造速度を高速化する傾向があるため、メニ
スカス近傍の初期凝固シェルは脆弱である。そのため、
入熱により凝固シェルの再溶解が発生するおそれがあ
る。[0004] In order to prevent the metal ingot, a method of melting the metal by applying heat from the outside may be considered. However, since the casting speed tends to increase with the reduction in thickness, the initially solidified shell near the meniscus is fragile. for that reason,
The heat input may cause re-dissolution of the solidified shell.
【０００５】地金張りを防止する別の方法としては、円
筒状の浸漬ノズルの鋳型短辺側に上向きの溶湯吐出孔を
設ける方法や、電磁気などによって溶湯表面を攪拌する
方法が知られている。しかし、これらの方法は溶湯表面
を乱すことに繋がるため、凝固不均一によるスラブの縦
割れやパウダー巻き込み欠陥の発生が常に付きまとうこ
とになる。さらには溶湯流速の増大によって、凝固シェ
ルの再溶解が発生する懸念もある。[0005] As other methods for preventing the metal plating, there are known a method of providing an upward molten metal discharge hole on the short side of a mold of a cylindrical immersion nozzle and a method of stirring the surface of the molten metal by electromagnetism or the like. . However, since these methods lead to disturbing the surface of the molten metal, the occurrence of vertical cracks in the slab or powder entrainment defects due to uneven solidification is always accompanied. Furthermore, there is a concern that re-dissolution of the solidified shell may occur due to an increase in the flow rate of the molten metal.
【０００６】地金張りと凝固シェル再溶解の防止を両立
する浸漬ノズルとして、ノズル自体を扁平形状とし、か
つ短片側壁と底壁に溶湯吐出孔を設けたものが、例えば
特開平８−３９２０８号公報に開示されている。しか
し、このノズルであっても鋳型長辺とノズルの間で地金
張りが発生することがあり、特に鋳造の開始直後や連々
鋳における取鍋交換時などの鋳造速度低下時において地
金張りの危険性が増大することとなり、安定した連続鋳
造が期待できない。[0006] As an immersion nozzle compatible with metal plating and prevention of re-melting of a solidified shell, an immersion nozzle in which the nozzle itself has a flat shape and a molten metal discharge hole is provided in a short side wall and a bottom wall is disclosed in, for example, JP-A-8-39208. It is disclosed in the gazette. However, even with this nozzle, metal inlay may occur between the long side of the mold and the nozzle, especially when the casting speed is low immediately after the start of casting or when changing ladles in continuous casting. The danger increases, and stable continuous casting cannot be expected.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、薄肉広幅ス
ラブの連続鋳造に際し、鋳型とノズルの狭小な間隙に発
生し易い地金張りを安定的に防止するとともに、湯面の
波立ちや凝固シェルの再溶解を防止するための浸漬ノズ
ルを提供することを課題とする。DISCLOSURE OF THE INVENTION The present invention is intended to stably prevent metal ingot which is likely to be generated in a narrow gap between a mold and a nozzle in continuous casting of a thin-walled and wide slab, and to prevent waving of a molten metal surface and solidification shell. It is an object of the present invention to provide an immersion nozzle for preventing the re-dissolution of water.
【０００８】[0008]
【課題を解決するための手段】鋳型とノズルの間の地金
張りを防止するために、鋳型長辺側へ溶湯を吐出するこ
とが最も効果的と考えられる。しかし、従来は鋳型長辺
側へ溶湯を吐出すると、湯面変動や凝固シェルの再溶解
が必ず起こると考えられており、特に薄肉扁平な鋳型で
は鋳型長辺とノズルの間隔が益々狭いので、鋳型長辺側
への溶湯の吐出はいわばタブーとされてきた。そのた
め、従来は薄肉広幅スラブの連続鋳造において、鋳型長
辺側へ溶湯を吐出させる方法は検討されていなかった。It is considered that the most effective method is to discharge the molten metal to the long side of the mold in order to prevent the metal from being stretched between the mold and the nozzle. However, conventionally, it is thought that when the molten metal is discharged to the long side of the mold, the fluctuation of the molten metal level and the re-melting of the solidified shell always occur.In particular, in the case of a thin flat mold, the distance between the long side of the mold and the nozzle is increasingly narrow, Discharge of molten metal to the long side of the mold has been so-called taboo. Therefore, conventionally, in continuous casting of thin and wide slabs, a method of discharging molten metal to the long side of the mold has not been studied.
【０００９】本発明の薄肉広幅スラブ連続鋳造用浸漬ノ
ズルは、従来の常識に反して鋳型長辺側へ溶湯を吐出す
るように構成したものであり、その要旨は下部を扁平状
に形成し、短片側壁と底壁および長片側壁に溶湯吐出孔
を設けたことを特徴とする。また、好ましくは前記に加
えて全ての溶湯吐出孔の合計開口面積に占める長片側壁
の溶湯吐出孔の合計開口面積の比率を２％以上とするこ
とによって、地金張りをより確実に防止することがで
き、さらには、前記合計開口面積の比率を１０％以下と
することによって凝固シェルの再溶解および湯面変動を
より確実に防止することができる。The immersion nozzle for continuous casting of a thin and wide slab of the present invention is configured to discharge molten metal to the long side of the mold contrary to conventional wisdom. A molten metal discharge hole is provided on the short side wall, the bottom wall, and the long side wall. Preferably, in addition to the above, the ratio of the total opening area of the molten metal discharge holes on the long side wall to the total open area of all the molten metal discharge holes is 2% or more, thereby more securely preventing the inlay of metal. Further, by setting the ratio of the total opening area to 10% or less, it is possible to more reliably prevent the re-melting of the solidified shell and the fluctuation of the molten metal level.
【００１０】[0010]
【発明の実施の形態】図１、図２および図３は本発明に
よる浸漬ノズルの実施例を示し、図１は外観斜視図（一
部破壊図）、図２および図３は長片側から見た断面図を
示す。図１において、浸漬ノズル１の溶湯流路２の水平
断面は頭部３では円筒状であり、首部４では円筒状から
扁平状に急激に変化し、下部に対応する胴部５では扁平
状をなしている。1, 2 and 3 show an embodiment of an immersion nozzle according to the present invention. FIG. 1 is an external perspective view (partially broken view), and FIGS. 2 and 3 are viewed from a long side. FIG. In FIG. 1, the horizontal cross section of the molten metal flow path 2 of the immersion nozzle 1 is cylindrical at the head 3, rapidly changes from cylindrical to flat at the neck 4, and flat at the body 5 corresponding to the lower part. No.
【００１１】胴部５は外形も扁平状であり、その下端近
傍の両短片側壁には短片側の溶湯吐出孔６，６が設けら
れており、底壁には底壁の溶湯吐出孔７，７が設けられ
ている。また両長片側壁にはそれぞれ３ヶの長片側の溶
湯吐出孔８，８，８が設けられており、該長片側の溶湯
吐出孔８，８，８は浸漬ノズル１の軸芯に対して左右対
称に配置されている。長片側の溶湯吐出孔８，８，８は
短片側の溶湯吐出孔６，６の上端よりも下方に位置して
おり、短片側の溶湯吐出孔６，６を溶湯に浸漬させたと
きに、全ての溶湯吐出孔が溶湯に浸漬するようになって
いる。The outer shape of the body 5 is also flat, and two short side walls near the lower end thereof are provided with melt discharge holes 6 and 6 on the short side, and the bottom wall is formed with melt discharge holes 7 and 7 on the bottom wall. 7 are provided. The two long side walls are provided with three long side melt discharge holes 8, 8 and 8, respectively. The long side melt discharge holes 8, 8 and 8 are provided with respect to the axis of the immersion nozzle 1. They are arranged symmetrically. The melt discharge holes 8, 8, 8 on the long side are located below the upper ends of the melt discharge holes 6, 6, on the short side, and when the melt discharge holes 6, 6 on the short side are immersed in the melt, All molten metal discharge holes are immersed in the molten metal.
【００１２】図２および図３は、本発明による浸漬ノズ
ルの他の実施例であり、図１に示した長片側の溶湯吐出
孔８，８，８を一体化した例である。図２は水平方向の
スリット状開口をもた溶湯吐出孔９を設けた例であり、
図３は円形開口をもった溶湯吐出孔１０を設けた例であ
る。浸漬ノズル１自体の強度からすると、図３の円形開
口をもった溶湯吐出孔１０が望ましいが、地金張り防止
の点では図２の水平方向のスリット状開口をもた溶湯吐
出孔９が望ましい。FIGS. 2 and 3 show another embodiment of the immersion nozzle according to the present invention, which is an example in which the molten metal discharge holes 8, 8, 8 on one long side shown in FIG. 1 are integrated. FIG. 2 shows an example in which a molten metal discharge hole 9 having a horizontal slit-like opening is provided.
FIG. 3 shows an example in which a molten metal discharge hole 10 having a circular opening is provided. In view of the strength of the immersion nozzle 1 itself, the molten metal discharge hole 10 having a circular opening shown in FIG. 3 is desirable, but the molten metal discharge hole 9 having a horizontal slit-shaped opening shown in FIG. .
【００１３】長片側壁の溶湯吐出孔８，８，８の開口面
積と位置および形状は、目標とする鋳片の厚みや鋳造速
度ならびに浸漬ノズル１を形成する材料の強度などに応
じて選択することができるが、長片側壁の溶湯吐出孔
８，８，８からの溶湯の吐出流量は、長片側壁の溶湯吐
出孔８，８，８の合計開口面積と全ての溶湯吐出孔６，
６，７，７，８，８，８の合計開口面積の比率によって
変化する。The opening area, position, and shape of the molten metal discharge holes 8, 8, 8 on the long side wall are selected according to the target thickness of the slab, the casting speed, the strength of the material forming the immersion nozzle 1, and the like. However, the discharge flow rate of the molten metal from the molten metal discharge holes 8, 8, 8 on the long side wall is determined by the total opening area of the molten metal discharge holes 8, 8, 8 on the long side wall, and all the molten metal discharge holes 6,
It changes depending on the ratio of the total opening area of 6, 7, 7, 8, 8, and 8.
【００１４】例えば図１において、全ての溶湯吐出孔６
および７および８の合計開口面積に対する長片側壁の溶
湯吐出孔８の合計開口面積の比率が２％に満たない場合
は、長片側壁の溶湯吐出孔８の溶湯吐出流量が不足して
地金張りが発生し易くなる。一方、前記合計開口面積の
比率が１０％を超える場合は、長片側壁の溶湯吐出孔８
の溶湯吐出流量が過剰となって湯面変動や凝固シェルの
再溶解が発生し易くなる。For example, in FIG. 1, all the molten metal discharge holes 6
If the ratio of the total opening area of the molten metal discharge holes 8 on the long side wall to the total opening area of the molten metal holes 7 and 8 is less than 2%, the flow rate of the molten metal discharged from the molten metal discharge hole 8 on the long side wall is insufficient. Tension easily occurs. On the other hand, when the ratio of the total opening area exceeds 10%, the molten metal discharge holes 8 on the long side wall are not provided.
The molten metal discharge flow rate becomes excessive, so that fluctuations in the molten metal level and re-dissolution of the solidified shell tend to occur.
【００１５】したがって、地金張りをより確実に防止す
るためには、前記合計開口面積の比率を２％以上とする
ことが必要であり、湯面変動や凝固シェルの再溶解をよ
り確実に防止するためには、前記開口面積の比率を１０
％以下とすることが必要である。この値は、図２および
図３の浸漬ノズル１についても同様である。Therefore, in order to more reliably prevent the metal ingot, it is necessary to set the ratio of the total opening area to 2% or more, and to more reliably prevent the fluctuation of the molten metal level and the re-melting of the solidified shell. In order to achieve this, the ratio of the opening area is set to 10
% Or less. This value is the same for the immersion nozzle 1 shown in FIGS.
【００１６】以上のように構成した浸漬ノズルを用いて
連続鋳造する場合は、図１の例では長片側壁の溶湯吐出
孔８を図示しない鋳型の長辺側に向けた状態で首部３を
図示しないタンディッシュに連結する。タンディッシュ
から浸漬ノズル１に供給された溶湯は、各溶湯吐出孔６
と７および８から鋳型に供給されるが、長片側の溶湯吐
出孔８から吐出する溶湯は、特に地金張りの生じ易い鋳
型辺片との間に適切な熱量を与えることで地金張りを防
止する。このとき、前記合計開口面積の比率が２〜１０
％であると、地金張りおよび湯面の波立ちや凝固シェル
の再溶解をより確実に防止することができるIn the case of continuous casting using the immersion nozzle configured as described above, in the example of FIG. 1, the neck 3 is illustrated with the molten metal discharge hole 8 on the long side wall facing the long side of the mold (not illustrated). Do not tie to a tundish. The molten metal supplied from the tundish to the immersion nozzle 1 is supplied to each molten metal discharge hole 6.
The molten metal discharged from the molten metal discharge hole 8 on the long side is provided with an appropriate amount of heat particularly between the side of the mold where the metal is likely to be metallized. To prevent. At this time, the ratio of the total opening area is 2 to 10
%, It is possible to more reliably prevent the metal inlay and the surface of the metal from being ruffled and the solidified shell from being re-dissolved.
【００１７】[0017]
【実施例】以下に本発明の効果を表１に記載の実施例に
基づいて説明する。鋳型断面形状は１００ｍｍ厚×１０
００ｍｍ幅の薄肉形状であり、０．０５％炭素鋼を１．
５ｍ／分の速度で鋳造した。用いた浸漬ノズルは図１〜
図３に示す形状のものであり、外寸は幅１９０ｍｍ×厚
み６０ｍｍであり、鋳型長辺と浸漬ノズルの間隔は２０
ｍｍであった。各ノズルの短片側壁の溶湯吐出孔の合計
開口面積は１０００ｍｍ2 、底壁の溶湯吐出孔の合計開
口面積は２０００ｍｍ2 として一定とし、長片側壁の溶
湯吐出孔の合計開口面積を種々変化させた。なお、ノズ
ル浸漬深さは１００ｍｍとして鋳造した。なお、従来例
は長片側壁に溶湯吐出孔を設けない浸漬ノズルの例であ
り、また、合計開口面積の比率とは、全ての溶湯吐出孔
の合計開口面積に占める長片側壁の溶湯吐出孔の合計開
口面積の比率である。EXAMPLES The effects of the present invention will be described below based on examples shown in Table 1. 100 mm thick x 10
It is a thin-walled shape with a width of 00 mm.
Casting was performed at a speed of 5 m / min. The immersion nozzle used is shown in Figs.
The outer dimensions are 190 mm wide × 60 mm thick, and the distance between the long side of the mold and the immersion nozzle is 20 mm.
mm. The total opening area of the molten metal discharge holes on the short side wall of each nozzle was fixed at 1000 mm 2 , the total opening area of the molten metal discharge holes on the bottom wall was fixed at 2000 mm 2 , and the total opening area of the molten metal discharge holes on the long side wall was variously changed. . The casting was performed with a nozzle immersion depth of 100 mm. The conventional example is an example of an immersion nozzle in which a molten metal discharge hole is not provided on the long side wall, and the ratio of the total opening area is defined as the molten metal discharge hole of the long side wall occupying the total open area of all molten metal discharge holes. Is the ratio of the total opening area.
【００１８】[0018]
【表１】 [Table 1]
【００１９】次に得られた結果について表１を基に説明
する。実験番号２，３，４，５は本発明の請求項２の要
件を満たした浸漬ノズルの例であるが、溶湯量６０ｔｏ
ｎ×５連続の計３００ｔｏｎを全量安定して完鋳でき
た。得られたスラブの表面には割れなどの欠陥は見られ
ず表面品質は良好であった。また鋳造後にノズルを回収
して吐出孔を観察したが、スカム等の詰まりや溶損の痕
跡は認められず健全であった。Next, the obtained results will be described based on Table 1. Experiment Nos. 2, 3, 4, and 5 are examples of immersion nozzles satisfying the requirements of claim 2 of the present invention, but the amount of molten metal is 60 to.
A total of 300 tons of nx5 continuous total casting could be stably completed. No defects such as cracks were observed on the surface of the obtained slab, and the surface quality was good. Further, the nozzle was recovered after casting, and the discharge holes were observed. However, no clogging of scum or the like and no trace of melting damage were observed, and the sound was sound.
【００２０】一方、実験番号１は本発明の請求項２の要
件を満足しない浸漬ノズルの例であるが、長片側壁の溶
湯吐出孔の合計開口面積が小さいため鋳型長辺と浸漬ノ
ズルの間に地金張りが発生しスラブに縦割が僅少発生し
た。また実験番号６，７，８も本発明の請求項２の要件
を満足しない浸漬ノズルの例であるが、長片側壁の溶湯
吐出孔の合計開口面積が大き過ぎたため鋳型長辺と浸漬
ノズルの間で湯面の波立ちが発生し、スラブの長片側面
に縦割れが僅少発生した。また実験番号９は長片側壁の
溶湯吐出孔を設けない例であるが、鋳型長辺と浸漬ノズ
ルの間に地金張りが発生して鋳造停止に至った。Experiment No. 1 is an example of an immersion nozzle which does not satisfy the requirements of claim 2 of the present invention. However, since the total opening area of the molten metal discharge holes on the long side wall is small, the distance between the long side of the mold and the immersion nozzle is small. The slab was covered with bullion, and the slab was slightly split. Experiment Nos. 6, 7, and 8 are also examples of immersion nozzles that do not satisfy the requirements of claim 2 of the present invention. However, since the total opening area of the molten metal discharge holes on the long side wall was too large, the long side of the mold and the immersion nozzle were not used. The surface of the slab was waved between the slabs, and a slight vertical crack occurred on one long side of the slab. Experiment No. 9 is an example in which the molten metal discharge hole is not provided on the long side wall, but metal casting occurred between the long side of the mold and the immersion nozzle, and the casting was stopped.
【００２１】[0021]
【発明の効果】以上説明したように本発明の浸漬ノズル
によれば、薄肉広幅スラブの連続鋳造において、鋳型長
辺側に適切な溶湯の吐出流を与えることによって、鋳型
長辺とノズルの狭小な間隙に発生し易い地金張りを安定
的に防止するとともに、湯面の波立ちや凝固シェルの再
溶解を防止することができ、その結果、表面欠陥の無い
品質良好なスラブを安定して鋳造することが可能にな
る。As described above, according to the immersion nozzle of the present invention, in the continuous casting of a thin and wide slab, by providing an appropriate molten metal discharge flow on the long side of the mold, the narrowing of the long side of the mold and the nozzle can be achieved. In addition to stably preventing metal inlay that is likely to occur in small gaps, it can also prevent ripples in the molten metal surface and re-dissolution of the solidified shell, resulting in stable casting of high-quality slabs without surface defects. It becomes possible to do.
【図１】本発明による浸漬ノズルの実施例を示す外観斜
視図（一部破壊図）。FIG. 1 is an external perspective view (partially broken view) showing an embodiment of an immersion nozzle according to the present invention.
【図２】本発明による浸漬ノズルの他の実施例を長片側
から見た断面図。FIG. 2 is a sectional view of another embodiment of the immersion nozzle according to the present invention as viewed from one long side.
【図３】本発明による浸漬ノズルの他の実施例を長片側
から見た断面図。FIG. 3 is a sectional view of another embodiment of the immersion nozzle according to the present invention as viewed from one long side.
１ 浸漬ノズル ２ 溶湯流路 ３ ノズルの頭部 ４ ノズルの首部 ５ ノズルの胴部 ６ 短片側壁の溶湯吐出孔 ７ 底壁の溶湯吐出孔 ８ 長片側壁の溶湯吐出孔 ９ スリット状の開口をもつ長片側壁の溶湯吐出孔 １０ 円状開口をもつ長片側壁の溶湯吐出孔 DESCRIPTION OF SYMBOLS 1 Immersion nozzle 2 Molten flow path 3 Nozzle head 4 Nozzle neck 5 Nozzle body 6 Molten discharge hole on short side wall 7 Molten discharge hole on bottom wall 8 Molten discharge hole on long side wall 9 Has slit-shaped opening Molten discharge hole on long side wall 10 Molten discharge hole on long side wall with circular opening
Claims (3)
壁と底壁および長片側壁に溶湯吐出孔が設けられている
ことを特徴とする薄肉広幅スラブ連続鋳造用浸漬ノズ
ル。1. A submerged nozzle for continuous casting of a thin and wide slab, wherein a lower portion is formed in a flat shape, and a molten metal discharge hole is provided in a short side wall, a bottom wall, and a long side wall.
壁と底壁および長片側壁に溶湯吐出孔が設けられてお
り、前記全ての溶湯吐出孔の合計開口面積に占める前記
長片側壁の溶湯吐出孔の合計開口面積の比率が２％以上
１０％以下であることを特徴とする薄肉広幅スラブ連続
鋳造用浸漬ノズル。2. A lower portion is formed in a flat shape, and a short side wall, a bottom wall and a long side wall are provided with a melt discharge hole, and the long side wall occupies a total opening area of all the melt discharge holes. Wherein the ratio of the total opening area of the molten metal discharge holes is 2% or more and 10% or less.
スリット状開口が形成されていることを特徴とする薄肉
広幅スラブ連続鋳造用浸漬ノズル。3. A immersion nozzle for continuous casting of a thin and wide slab, wherein a slit opening in a horizontal direction is formed in the molten metal discharge hole on the long side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27797097A JPH11104796A (en) | 1997-09-26 | 1997-09-26 | Immersion nozzle for continuous casting thin and wide slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27797097A JPH11104796A (en) | 1997-09-26 | 1997-09-26 | Immersion nozzle for continuous casting thin and wide slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11104796A true JPH11104796A (en) | 1999-04-20 |
Family
ID=17590813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27797097A Withdrawn JPH11104796A (en) | 1997-09-26 | 1997-09-26 | Immersion nozzle for continuous casting thin and wide slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11104796A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101007264B1 (en) | 2008-12-26 | 2011-01-13 | 주식회사 포스코 | Submerged nozzle |
| CN104096812A (en) * | 2013-04-15 | 2014-10-15 | 维苏威高级陶瓷(苏州)有限公司 | Thin billet plate fast-to-replace submerged nozzle |
| CN109465436A (en) * | 2018-11-12 | 2019-03-15 | 莱芜钢铁集团银山型钢有限公司 | A kind of ultra-thin Hot Metal in Beam Blank central point casting submersed nozzle |
-
1997
- 1997-09-26 JP JP27797097A patent/JPH11104796A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101007264B1 (en) | 2008-12-26 | 2011-01-13 | 주식회사 포스코 | Submerged nozzle |
| CN104096812A (en) * | 2013-04-15 | 2014-10-15 | 维苏威高级陶瓷(苏州)有限公司 | Thin billet plate fast-to-replace submerged nozzle |
| CN109465436A (en) * | 2018-11-12 | 2019-03-15 | 莱芜钢铁集团银山型钢有限公司 | A kind of ultra-thin Hot Metal in Beam Blank central point casting submersed nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20041207 |