JPH08108253A - Device for cleaning peripheral surface of roll in twin roll type continuous caster - Google Patents
Device for cleaning peripheral surface of roll in twin roll type continuous casterInfo
- Publication number
- JPH08108253A JPH08108253A JP24403794A JP24403794A JPH08108253A JP H08108253 A JPH08108253 A JP H08108253A JP 24403794 A JP24403794 A JP 24403794A JP 24403794 A JP24403794 A JP 24403794A JP H08108253 A JPH08108253 A JP H08108253A
- Authority
- JP
- Japan
- Prior art keywords
- seal cover
- suction nozzle
- cooling
- peripheral surface
- molten metal
- 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
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、双ドラム式連続鋳造機
を用いた薄肉鋳片の製造において、冷却ドラムの周面に
付着あるいは周面近傍を浮遊する異物を吸引除去するた
めの清浄装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for sucking and removing foreign matter adhering to the peripheral surface of a cooling drum or floating in the vicinity of the peripheral surface in the production of thin cast pieces using a twin-drum type continuous casting machine. It is about.
【０００２】[0002]
【従来の技術】双ドラム式連続鋳造機を用いた薄肉鋳片
の製造においては、湯溜まり部に供給された溶融金属の
表面には、酸化あるいは凝固によって異物が生成する。
この異物が互いに反対方向へ回転する一対の冷却ドラム
の周面に付着して鋳片に巻込まれると、鋳片の品質を損
なう。2. Description of the Related Art In the production of a thin cast piece using a twin-drum type continuous casting machine, foreign matter is produced on the surface of the molten metal supplied to the molten metal pool due to oxidation or solidification.
When the foreign matter adheres to the peripheral surfaces of the pair of cooling drums rotating in opposite directions and is wound around the cast piece, the quality of the cast piece is impaired.
【０００３】前記酸化膜等の異物の生成を防止するため
に、湯溜まり部の上方にシールカバーを設けて溶融金属
の表面をシールし、このシールカバーの中に予熱した不
活性ガスを供給する方法が、例えば特開平２−５２１４
８号公報によって開示されている。In order to prevent the generation of foreign matter such as the oxide film, a seal cover is provided above the pool to seal the surface of the molten metal, and a preheated inert gas is supplied into the seal cover. The method is, for example, JP-A-2-5214.
No. 8 publication.
【０００４】しかし、このような方法によっても鋳片の
表面品質等を十分に改善することはできなかった。その
原因は、湯溜まり部の上方においては溶融金属中の蒸発
性金属の蒸発等による微細な金属粉や金属酸化物粉等の
異物が浮遊し、この異物が冷却ドラムの周面に付着して
鋳片に巻込まれ、巻込み欠陥や異物を起点とする冷却不
均一による表面割れ等が発生するためである。However, even with such a method, the surface quality and the like of the slab cannot be sufficiently improved. The cause of this is that foreign matter such as fine metal powder and metal oxide powder floating due to evaporation of the evaporative metal in the molten metal floats above the molten metal pool, and these foreign matter adhere to the peripheral surface of the cooling drum. This is because, when the slab is rolled up, surface defects and the like occur due to winding defects and uneven cooling caused by foreign matter.
【０００５】一方、湯溜まり部内を浮遊する異物を除去
するために、冷却ドラムの周面や溶融金属表面の近傍に
排気ドラフトを設けて異物を吸引除去する装置が、例え
ば特開平１−３１７６６１号公報に開示されている。し
かし、この装置ではシールカバーを設けていないため、
酸化膜等の生成を防止することができない。また、この
装置においてシールカバーを付加して設けた場合は、異
物の吸引除去に伴って吸引した非酸化性ガスをシールカ
バー外に排出することになるため、排出した非酸化性ガ
スの回収処理、および回収したガスに見合う量を供給す
るためのガス供給量制御装置等を必要とし、装置が複雑
になるという問題がある。On the other hand, in order to remove foreign matters floating in the molten metal pool, a device for suctioning and removing foreign matters by providing an exhaust draft near the peripheral surface of the cooling drum or the surface of the molten metal is disclosed in, for example, JP-A-1-317661. It is disclosed in the official gazette. However, since this device does not have a seal cover,
It is not possible to prevent the formation of an oxide film or the like. If a seal cover is added to this device, the non-oxidizing gas sucked along with the suction and removal of foreign matter will be discharged to the outside of the seal cover. , And a gas supply amount control device for supplying an amount commensurate with the recovered gas is required, which causes a problem that the device becomes complicated.
【０００６】[0006]
【発明が解決しようとする課題】そこで本発明は、双ド
ラム式連続鋳造機を用いた薄肉鋳片の製造において、湯
溜まり部の上方にシールカバーを設けて溶融金属の表面
をシールするとともに、冷却ドラムの周面に付着あるい
は周面近傍を浮遊する異物を簡単な装置によって容易に
吸引除去することで表面性状の優れた鋳片を製造するこ
とを目的とする。SUMMARY OF THE INVENTION Therefore, the present invention provides a seal cover above the molten metal pool to seal the surface of the molten metal in the production of a thin cast piece using a twin-drum type continuous casting machine. An object of the present invention is to produce a slab having excellent surface properties by easily suctioning and removing foreign matter attached to the peripheral surface of the cooling drum or floating around the peripheral surface by a simple device.
【０００７】[0007]
【課題を解決するための手段】従来法では、吸引したガ
スをシールカバーの外に排出するとともに、その排出量
に見合うガスを供給するために、複雑な装置を必要とす
る。本発明は吸引したガスをシールカバー内で循環させ
ることによって装置を簡略化したものである。その要旨
は、互いに反対方向へ回転する一対の冷却ドラムと、該
冷却ドラムの両端面に接触した一対のサイド堰とで湯溜
まり部を形成した双ドラム式連続鋳造機において、前記
湯溜まり部を覆うシールカバーを設け、該シールカバー
内に非酸化性ガスを供給するガス供給管と該シールカバ
ー内の異物を吸引する吸引ノズルとを設け、前記ガス導
管と吸引ノズルとでエジェクターノズルが形成されてな
ることを特徴とする。In the conventional method, a complicated device is required for discharging the sucked gas to the outside of the seal cover and supplying the gas commensurate with the discharged amount. The present invention simplifies the apparatus by circulating the sucked gas in the seal cover. The gist thereof is, in a twin-drum type continuous casting machine in which a molten metal pool is formed by a pair of cooling drums rotating in mutually opposite directions and a pair of side dams contacting both end surfaces of the cooling drum, A seal cover for covering is provided, a gas supply pipe for supplying a non-oxidizing gas and a suction nozzle for sucking foreign matter in the seal cover are provided in the seal cover, and an ejector nozzle is formed by the gas conduit and the suction nozzle. It is characterized by
【０００８】また、前記吸引ノズルの先端には前記冷却
ドラムの周面に近接し、かつ該冷却ドラムの全幅に沿う
吸引口が配設され、一方の端部には上方を向いた排気口
が配設されており、前記ガス導管はシールカバー及び吸
引ノズルの壁を貫通して先端のガス噴出口を前記吸引ノ
ズルの内にもち、かつ該ガス噴出口は前記吸引ノズルの
排気口と同じ方向に向くことを特徴とする。A suction port is provided at the tip of the suction nozzle, which is close to the peripheral surface of the cooling drum and extends along the entire width of the cooling drum, and an exhaust port facing upward is provided at one end. The gas conduit extends through the seal cover and the wall of the suction nozzle to have a gas outlet at the tip inside the suction nozzle, and the gas outlet is in the same direction as the exhaust port of the suction nozzle. It is suitable for.
【０００９】[0009]
【作用】図１に示すように、互いに反対方向へ回転する
一対の冷却ドラム１，１の両端面にサイド堰２，２を接
触して設けることで湯溜まり部３を形成し、湯溜まり部
３内に溶融金属を供給する。湯溜まり部３内に供給され
た溶融金属は、冷却ドラム１，１の周面により冷却さ
れ、徐々に凝固し鋳片６となって下方へ引き抜かれる。As shown in FIG. 1, side pools 2 and 2 are provided in contact with both end faces of a pair of cooling drums 1 and 1 rotating in opposite directions to form a pool 3 for forming a pool 3. Molten metal is supplied into the inside of the container 3. The molten metal supplied into the molten metal pool 3 is cooled by the peripheral surfaces of the cooling drums 1, 1 and gradually solidifies to form a cast piece 6 which is drawn downward.
【００１０】湯溜まり部３に供給された溶融金属の表面
には酸化あるいは凝固によって酸化膜等の異物が生成す
る。この異物は互いに反対方向へ回転する一対の冷却ド
ラム１，１によって鋳片６に巻込まれるため、鋳片の品
質を損なう。そこで、湯溜まり部３の上方を覆うシール
カバー７を設け、シールカバー７にガス導管８を接続し
て設け、シールカバー７内にＡｒやＮ2 のような不活性
ガスやＣＯのような還元性ガス等の非酸化性ガスを供給
することで、溶融金属表面での酸化膜等の異物の生成を
防止することが出来る。Foreign matter such as an oxide film is generated on the surface of the molten metal supplied to the pool 3 by oxidation or solidification. Since the foreign matter is wound around the slab 6 by the pair of cooling drums 1 and 1 rotating in opposite directions, the quality of the slab is impaired. Therefore, a seal cover 7 that covers the upper portion of the pool 3 is provided, and a gas conduit 8 is connected to the seal cover 7, and an inert gas such as Ar or N 2 or a reduction such as CO is provided inside the seal cover 7. By supplying a non-oxidizing gas such as an oxidizing gas, it is possible to prevent the generation of foreign matter such as an oxide film on the surface of the molten metal.
【００１１】一方、シールカバー７内では、溶融金属中
の易蒸発性金属の蒸発等によって微細な金属粉や金属酸
化物粉等の異物が浮遊し、この異物が冷却ドラム１の周
面に付着して鋳片６に巻込まれ、巻込み欠陥や異物を起
点とし、冷却不均一による表面割れ等が発生する。そこ
で、シールカバー７内に異物を吸引除去する吸引ノズル
を設け、この吸引ノズルと前記ガス導管８の先端に設け
たガス噴出口９とでエジェクターノズル１３を形成す
る。このエジェクターノズル１３によって冷却ドラム１
の周面に付着した異物および周面近傍を浮遊する異物を
吸引除去することが可能となる。On the other hand, in the seal cover 7, foreign matter such as fine metal powder and metal oxide powder floats due to evaporation of the easily evaporative metal in the molten metal and the foreign matter adheres to the peripheral surface of the cooling drum 1. Then, the slab 6 is rolled up, and the defects such as the rolling-in defect and the foreign matter are used as the starting points to cause surface cracks due to uneven cooling. Therefore, a suction nozzle for sucking and removing foreign matter is provided in the seal cover 7, and the ejector nozzle 13 is formed by the suction nozzle and the gas ejection port 9 provided at the tip of the gas conduit 8. With this ejector nozzle 13, the cooling drum 1
It is possible to suck and remove the foreign matter attached to the peripheral surface and the foreign matter floating near the peripheral surface.
【００１２】[0012]
【実施例】本発明の実施例を図１〜図３を用いて説明す
る。図１は側断面図、図２は図１のＡ−Ａ線平断面図、
図３は図１の部分拡大図を示している。矢印方向へ回転
駆動される内部水冷の冷却ドラム１，１と冷却ドラム
１，１の両端面に接触して設けられた耐火物製のサイド
堰２，２（手前側は図示しない）とで形成された湯溜ま
り部３内に、タンディッシュ４内の溶融金属を注入ノズ
ル５を介して供給する。湯溜まり部３内に供給された溶
融金属は、冷却ドラム１，１の周面により冷却されて徐
々に凝固し、鋳片６となって下方へ引き抜かれる。Embodiments of the present invention will be described with reference to FIGS. 1 is a side sectional view, FIG. 2 is a sectional view taken along the line AA of FIG.
FIG. 3 shows a partially enlarged view of FIG. Formed by internal water-cooling cooling drums 1, 1 that are driven to rotate in the direction of the arrow, and refractory side dams 2 and 2 (front side not shown) provided in contact with both end surfaces of the cooling drums 1, 1. The molten metal in the tundish 4 is supplied into the molten metal pool 3 through the injection nozzle 5. The molten metal supplied into the molten metal pool 3 is cooled by the peripheral surfaces of the cooling drums 1 and 1 and gradually solidifies to form a cast piece 6 which is drawn downward.
【００１３】湯溜まり部３の上方にはシールカバー７が
湯溜まり部３を覆うように設置されており、シールカバ
ー７の上端はタンディッシュ４の側面に、下端は冷却ド
ラム１，１の周面にそれぞれ密に接触している。シール
カバー７内の冷却ドラム１，１の上方には吸引ノズル１
０が設けられている。吸引ノズル１０の先端（下端）に
は異物を吸引する吸引口１１が設けられており、吸引ノ
ズル１０の基部（上端）には吸引した異物を排出する排
気口１２が設けられている。吸引口１１は冷却ドラム１
の周面に溶融金属が最初に接触する箇所であるメニスカ
ス１４に近接し、かつ冷却ドラム１の周面に向いて開口
するとともに、冷却ドラム１の全幅に沿ってスリット状
に形成されている。排気口１２は管状に形成され上方の
開口をもっている。A seal cover 7 is installed above the pool 3 to cover the pool 3. The seal cover 7 has an upper end on the side surface of the tundish 4 and a lower end around the cooling drums 1, 1. The surfaces are in close contact with each other. A suction nozzle 1 is provided above the cooling drums 1 and 1 in the seal cover 7.
0 is provided. A suction port 11 for sucking foreign matter is provided at the tip (lower end) of the suction nozzle 10, and an exhaust port 12 for discharging the sucked foreign matter is provided at the base (upper end) of the suction nozzle 10. The suction port 11 is the cooling drum 1.
It is formed in a slit shape along the entire width of the cooling drum 1 while being close to the meniscus 14 where the molten metal first comes into contact with the peripheral surface of the cooling drum 1 and opening toward the peripheral surface of the cooling drum 1. The exhaust port 12 is formed in a tubular shape and has an upper opening.
【００１４】シールカバー７及び吸引ノズル１０の壁を
貫通してガス導管８が設けられており、ガス導管８の先
端にはガス噴出口９が吸引ノズルの排気口１２と同じ向
きに設けられている。ガス導管８に非酸化性ガスを供給
し、ガス噴出口９から排気口１２に向けて噴出させる
と、吸引ノズル１０内に矢印方向のガス流れが形成され
ることでエジェクター効果が得られる。なお、吸引口１
１は、スリット状の例を示したが、これに替えて複数の
小径開口を冷却ドラム１の全幅に沿って設け、かつ小径
開口を冷却ドラム１の幅方向で重なるように千鳥状に配
設してもよい。A gas conduit 8 is provided through the walls of the seal cover 7 and the suction nozzle 10, and a gas jet port 9 is provided at the tip of the gas conduit 8 in the same direction as the exhaust port 12 of the suction nozzle. There is. When a non-oxidizing gas is supplied to the gas conduit 8 and ejected from the gas ejection port 9 toward the exhaust port 12, a gas flow in the direction of the arrow is formed in the suction nozzle 10 to obtain an ejector effect. The suction port 1
1 shows a slit-shaped example, but instead, a plurality of small diameter openings are provided along the entire width of the cooling drum 1, and the small diameter openings are arranged in a staggered manner so as to overlap in the width direction of the cooling drum 1. You may.
【００１５】鋳造中においては、湯溜まり部３に供給さ
れた溶融金属の表面には酸化あるいは凝固によって酸化
膜が生成し、また溶融金属の上方では、蒸発性金属の蒸
発等によって微細な金属粉や金属酸化物粉等の異物が浮
遊する。これらの異物は、互いに反対方向へ回転する一
対の冷却ドラム１，１の周面に付着して鋳片６に巻込ま
れ、巻込み欠陥や異物を起点とする冷却不均一による表
面割れ等が発生する。そこで、ガス供給管８，８からシ
ールカバー７内にＡｒやＮ2 のような不活性ガスあるい
はＣＯのような還元性ガス等の非酸化性ガスを供給する
ことで溶融金属表面の酸化を防止する。During casting, an oxide film is formed on the surface of the molten metal supplied to the pool 3 by oxidation or solidification, and above the molten metal, fine metal powder is generated due to evaporation of evaporative metal. And foreign substances such as metal oxide powder float. These foreign substances adhere to the peripheral surfaces of the pair of cooling drums 1 and 1 rotating in opposite directions and are wound around the slab 6 to cause surface defects such as winding defects and uneven cooling caused by the foreign substances. To do. Therefore, a non-oxidizing gas such as an inert gas such as Ar or N 2 or a reducing gas such as CO is supplied from the gas supply pipes 8 and 8 into the seal cover 7 to prevent the surface of the molten metal from being oxidized. To do.
【００１６】非酸化性ガスが、ガス導管８，８のガス噴
出口９から噴出して排気口１２を通過すると、エジェク
ター効果によって吸引ノズル１０の内部に矢印方向のガ
ス流れが生じる。このガス流によって冷却ドラム１，１
に周面に付着した異物および吸引口１１近傍を浮遊する
異物は、吸引口１１から吸引されて排気口１２から排出
されることで冷却ドラム１，１の周面は清浄化される。
この場合、シールカバー７内のガスを外部に排出しない
ため、シールカバー７内の圧力を高め非酸化性に安定し
て維持することが容易である。なお、シールカバー７内
の圧力を外部圧力よりも高めて雰囲気を非酸化性に維持
するためには、ガス供給量はシールカバー７の外部へ洩
れ出るガス量に見合う量より多くすることが望ましい。
また排気口１２及びガス噴出口８を真上に向けて設けた
が斜め上方に向けて設けてもよい。When the non-oxidizing gas is ejected from the gas ejection port 9 of the gas conduits 8 and passes through the exhaust port 12, a gas flow in the arrow direction is generated inside the suction nozzle 10 by the ejector effect. Cooling drums 1, 1 by this gas flow
The foreign matter attached to the peripheral surface and the foreign matter floating around the suction port 11 are sucked from the suction port 11 and discharged from the exhaust port 12, so that the circumferential surface of the cooling drums 1, 1 is cleaned.
In this case, since the gas inside the seal cover 7 is not discharged to the outside, it is easy to increase the pressure inside the seal cover 7 and stably maintain it non-oxidizing. In order to increase the pressure inside the seal cover 7 above the external pressure and maintain the atmosphere non-oxidizing, it is desirable that the gas supply amount be larger than the amount that leaks to the outside of the seal cover 7. .
Further, although the exhaust port 12 and the gas ejection port 8 are provided right above, they may be provided obliquely upward.
【００１７】[0017]
【発明の効果】本発明によれば、双ドラム式連続鋳造機
を用いた薄肉鋳片の製造において、湯溜まり部の上方を
覆うシールカバーを設け、シールカバー内に非酸化性ガ
スを供給するガス導管を設けたので、湯溜まり部内溶融
金属の酸化による異物の生成を防止することができる。
また、シールカバー内にガス導管と吸引ノズルによって
形成されたエジェクターノズルによってシールカバー内
を浮遊し、あるいは冷却ドラムの周面に付着した異物を
吸引除去するため、安定して清浄な状態を維持すること
ができる。この結果、異物の鋳片への巻込みによる巻込
み欠陥や異物を起点とする冷却不均一による表面割等の
発生を防止して、表面清浄の良好な鋳片を製造すること
ができる。According to the present invention, in the production of a thin cast piece using a twin-drum type continuous casting machine, a seal cover for covering the upper part of the pool is provided, and a non-oxidizing gas is supplied into the seal cover. Since the gas conduit is provided, it is possible to prevent the generation of foreign matter due to the oxidation of the molten metal in the pool.
In addition, since the ejector nozzle formed by the gas conduit and the suction nozzle in the seal cover floats inside the seal cover or removes foreign matter adhering to the peripheral surface of the cooling drum by suction, a stable and clean state is maintained. be able to. As a result, it is possible to prevent the occurrence of winding defects due to the inclusion of foreign matter into the cast piece and the occurrence of surface cracking or the like due to nonuniform cooling from the foreign matter as a starting point, and it is possible to manufacture a cast piece with good surface cleaning.
【図１】本発明の実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】図１のＡ−Ａ線の平断面図である。FIG. 2 is a plan sectional view taken along the line AA of FIG.
【図３】図１の部分拡大図である。FIG. 3 is a partially enlarged view of FIG. 1;
１…冷却ドラム ２…サイド堰 ３…湯溜まり部 ４…タンディッシュ ５…注入ノズル ６…鋳片 ７…シールカバー ８…ガス導管 ９…ガス噴出口 １０…吸引ノズル １１…吸引口 １２…排気口 １３…エジェクターノズル １４…メニスカス DESCRIPTION OF SYMBOLS 1 ... Cooling drum 2 ... Side weir 3 ... Melt pool 4 ... Tundish 5 ... Injection nozzle 6 ... Cast piece 7 ... Seal cover 8 ... Gas conduit 9 ... Gas ejection port 10 ... Suction nozzle 11 ... Suction port 12 ... Exhaust port 13 ... Ejector nozzle 14 ... Meniscus
Claims (2)
ラムと、冷却ドラムの両端面に接触した一対のサイド堰
とで湯溜まり部を形成した双ドラム式連続鋳造機におい
て、湯溜まり部を覆うシールカバーと、シールカバー内
に非酸化性ガスを供給するガス導管とシールカバー内の
異物を吸引する吸引ノズルとからなり、ガス導管と吸引
ノズルとでエジェクターノズルを形成してなることを特
徴とする双ドラム式連続鋳造機のドラム周面清浄装置。1. A twin-drum type continuous casting machine in which a molten metal pool is formed by a pair of cooling drums rotating in mutually opposite directions and a pair of side dams contacting both end faces of the cooling drum, thereby covering the molten metal pool. A seal cover, a gas conduit for supplying a non-oxidizing gas into the seal cover, and a suction nozzle for sucking foreign matter in the seal cover, wherein the gas conduit and the suction nozzle form an ejector nozzle. A twin drum type continuous casting machine drum surface cleaning device.
に近接し、かつ冷却ドラムの全幅に沿う吸引口が配設さ
れており、一方の端部には上方を向いた排気口が配設さ
れており、ガス導管はシールカバー及び吸引ノズルの壁
を貫通して先端のガス噴出口を吸引ノズル内にもち、か
つガス噴出口は吸引ノズルの排気口と同じ方向に向く請
求項１に記載の双ドラム式連続鋳造機のドラム周面清浄
装置。2. A suction port is provided at the tip of the suction nozzle, the suction port being close to the peripheral surface of the cooling drum and extending along the entire width of the cooling drum, and the exhaust port facing upward is provided at one end. The gas conduit is provided so as to penetrate the seal cover and the wall of the suction nozzle to have a gas outlet at the tip in the suction nozzle, and the gas outlet faces in the same direction as the exhaust port of the suction nozzle. A drum peripheral surface cleaning device of the twin-drum type continuous casting machine described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24403794A JP2788197B2 (en) | 1994-10-07 | 1994-10-07 | Drum peripheral cleaning device for twin-drum continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24403794A JP2788197B2 (en) | 1994-10-07 | 1994-10-07 | Drum peripheral cleaning device for twin-drum continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08108253A true JPH08108253A (en) | 1996-04-30 |
| JP2788197B2 JP2788197B2 (en) | 1998-08-20 |
Family
ID=17112780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24403794A Expired - Lifetime JP2788197B2 (en) | 1994-10-07 | 1994-10-07 | Drum peripheral cleaning device for twin-drum continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2788197B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003266153A (en) * | 2002-03-14 | 2003-09-24 | Nippon Steel Corp | Method for casting thin cast slab with twin-drum type continuous casting machine |
| JP2005512820A (en) * | 2001-12-21 | 2005-05-12 | ポスコ | Preventing device for roll surface contamination and slab edge unsolidification in twin roll type thin plate casting machine. |
| KR100584751B1 (en) * | 2001-12-22 | 2006-05-30 | 주식회사 포스코 | An apparatus for controlling gas layer thickness on the surface of casting roll in twin roll strip caster |
-
1994
- 1994-10-07 JP JP24403794A patent/JP2788197B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005512820A (en) * | 2001-12-21 | 2005-05-12 | ポスコ | Preventing device for roll surface contamination and slab edge unsolidification in twin roll type thin plate casting machine. |
| KR100584751B1 (en) * | 2001-12-22 | 2006-05-30 | 주식회사 포스코 | An apparatus for controlling gas layer thickness on the surface of casting roll in twin roll strip caster |
| JP2003266153A (en) * | 2002-03-14 | 2003-09-24 | Nippon Steel Corp | Method for casting thin cast slab with twin-drum type continuous casting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2788197B2 (en) | 1998-08-20 |
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| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980428 |