JPS59225859A - Method for producing continuously extremely thin sheet - Google Patents

Abstract

PURPOSE:To obtain an extremely thin sheet having a broad width, uniform thickness and high quality by discharging downward the molten metal to be solidified to the extremely thin sheet onto a rotating mold roller beneath both rotating gates from the space between said gates. CONSTITUTION:Both rotating gates 2 are moved toward B and are brought into contact with each other. The nozzle of a tundish 1 is opened to charge a molten metal 7 between the gates 2. When the amt. of the molten metal charged therein attains a prescribed amt., both gates 2 are rotated toward A and are moved toward C to form a clearance between the gates 2. The molten metal 7 is then discharged from between the gates 2 down onto a mold roller 3 rotating toward D. The molten metal solidifies thereupon to form an extremely thin sheet 6 which is fed by a scraper 5 to the inside of a roller conveyor 4 and is conveyed to a prescribed place. Since the molten metal flows down by gravity according to the above-mentioned method, the extremely thin sheet having a broad width and uniform thickness is cast and since the downflow is initiated from the bottom of the molten metal, the impurities floating on the molten metal surface are prevented from being entrapped in the molten metal and the extremely thin sheet having high quality is obtd.

Description

【発明の詳細な説明】 本発明は超薄板を連続鋳造する方法に関する。[Detailed description of the invention] The present invention relates to a method for continuously casting ultra-thin sheets.

従来、超薄板を連続鋳造する方法として、回転輪の周縁
部を溶融金属と接触させ、その回縁部により溶融金属を
引上げると共にその引上げた溶融金属を凝固させ、その
凝固により形成された超薄板を回転輪から引き剥がして
取出す方法がある。Conventionally, as a method for continuously casting ultra-thin plates, the peripheral edge of a rotating ring was brought into contact with molten metal, the molten metal was pulled up by the circumferential edge, and the pulled molten metal was solidified. There is a method to remove the ultra-thin plate by peeling it off the rotating wheel.

また回転輪とベルトとの共働によって超薄板を上方へ引
出す方法がある。この従来方法であると、重力に逆らっ
て超薄板を引上げるものであるから、広幅でしかも均一
厚さのｆｌＦ板を鋳造することは困難である。また溶融
金属の上面に浮かぶ不純物を引き込みやすく、高品質の
超薄板を鋳造することも困難である。There is also a method of pulling out an ultra-thin plate upward by the cooperation of a rotating wheel and a belt. Since this conventional method involves pulling up an ultra-thin plate against gravity, it is difficult to cast an flF plate with a wide width and a uniform thickness. In addition, impurities floating on the top surface of the molten metal are easily drawn in, making it difficult to cast high-quality ultra-thin plates.

そこで本発明はかかる問題点を解消した超薄板を連続鋳
造する方法を提供するものであって、その特徴とすると
ころは、タンイイ・リシュから互いに当接させられた一
対の断熱性ローう状回転堰間に溶湯を注入し、両回転層
間の溶湯量が所定量にたつしたならば両回転堰を互いに
離間させ、これによって両回転層間から溶湯をその下に
おいて一方向へ回転する七−シトローラ上に流下させ、
該℃−ルド０−ラ上で凝固した超薄板を受取って所定場
所まで搬送することにあり、かかる方法によれば、両回
転層間から溶湯を自然に流下させるものであるから、広
幅でしかも均一厚さの超薄板を鋳造することができるも
のである。また溜った溶湯の下から流下させるものであ
るから、その溶湯の上面に浮かぶ不純物を引き込むこと
もなく、高品質の超薄板を鋳造することができるもので
ある。Therefore, the present invention provides a method for continuously casting an ultra-thin plate that solves these problems, and is characterized by a pair of heat-insulating wax-like shapes that are brought into contact with each other from a tongue liche. Molten metal is injected between the rotating weirs, and when the amount of molten metal between the two rotating layers reaches a predetermined amount, the two rotating weirs are separated from each other, thereby allowing the molten metal to flow from between the two rotating layers and rotating in one direction. let it flow upwards,
The purpose of this method is to receive the ultra-thin plate solidified on the C-rudder and transport it to a predetermined location.According to this method, the molten metal is allowed to flow down naturally from between the two rotating layers, so it is wide and It is possible to cast ultra-thin plates with uniform thickness. Furthermore, since the molten metal is made to flow down from below the accumulated molten metal, it is possible to cast high-quality ultra-thin plates without drawing in impurities floating on the top surface of the molten metal.

以下、本発明の一実施例を図に基づいて説明する。（１
）はタン望イ・リシュ、（２）は一対の断熱性ローラ吠
回転堰であって、たとえばセラミ・リフ材や耐熱レンガ
などで形成され、それぞれ矢印（Ａ）方向へ回転自在で
あり、しかも矢印（Ｂ）　（Ｃ）方向へも移動自在であ
る。（３）は両回転層（２）の下に配設された１−ルド
Ｄ−うであって、内部には冷却水路を有し、矢印（Ｄ）
方向へ回転自在である。（４）は該ｆ−ルドＤ−ラ（３
）の横に配設された０−ラコンベア、（５）は七−ルド
Ｄ−ラ（３）上で凝固した超薄板（６）を受取って０−
ラコンベア（４）へ送り込むスクレーバである。Hereinafter, one embodiment of the present invention will be described based on the drawings. (1
) is a rotary weir, and (2) is a pair of insulating roller rotary weirs, which are made of, for example, ceramic refrigeration material or heat-resistant bricks, and are rotatable in the direction of the arrow (A). It is also movable in the directions of arrows (B) and (C). (3) is a 1-door D-wall disposed under both rotating layers (2), which has a cooling water channel inside, and is indicated by the arrow (D).
It can be rotated freely in any direction. (4) is the f-rud D-ra (3
), the 0-layer conveyor (5) receives the ultra-thin plate (6) solidified on the 7-rd D-layer (3) and conveys it to the 0-layer conveyor (5).
This is a scraper that sends it to the la conveyor (4).

なお回転堰（２）の端部間に断熱性仕切堰（図示せず）
を配設しである。Additionally, there is a heat insulating partition weir (not shown) between the ends of the rotating weir (2).
It is arranged.

上記構成に基づいて超薄板（６）を連続鋳造する方法を
説明する。まず第１図に示すごとく両回転層（２）を矢
印（Ｂ）方向へ移動させて互いに当接させ、次にタンデ
ィツシュ（１）のノズルを開放して両回転層（２）間に
溶湯（７）を注入する。次に両回転層（２）間の溶湯量
が所定量にたつし１こならば両回転層（２）を矢印（Ａ
）方向へ回転させると共に矢印（Ｃ）方向へ移動させ、
両回転層（２）間に間隙を形成する（なお回転堰（２）
の矢印（Ａ）方向への回転は溶湯（７）の注入の初めか
らおこなっていてもよい）。これによって両回転層（２
）間から溶湯（７）が矢印の）方向へ回転するｔ−ルド
〇−ラ（３）上に流下し、その溶湯（７）は℃−ルド０
−ラ（３）上で凝固して超薄板（６）となる。次にその
超薄板（６）はスクレーバ（５）によりローラコンベア
（４）内へ送られ、所定場所まで搬送される。A method for continuously casting an ultra-thin plate (6) based on the above configuration will be explained. First, as shown in Figure 1, both rotating layers (2) are moved in the direction of arrow (B) so that they come into contact with each other, and then the nozzle of the tundish (1) is opened and the molten metal (2) is placed between both rotating layers (2). 7) Inject. Next, if the amount of molten metal between both rotating layers (2) reaches a predetermined amount and 1 molten metal, move both rotating layers (2) to the arrow (A).
) direction and move it in the arrow (C) direction,
A gap is formed between both rotating layers (2) (in addition, rotating weir (2)
The rotation in the direction of arrow (A) may be performed from the beginning of pouring the molten metal (7)). This allows both rotating layers (2
), the molten metal (7) flows down onto the rotating t-rudler (3) in the direction of the arrow, and the molten metal (7)
- It solidifies on the la (3) and becomes an ultra-thin plate (6). Next, the ultra-thin plate (6) is sent into a roller conveyor (4) by a scraper (5) and conveyed to a predetermined location.

以上述べたごとく本発明によれば、両回転層間から溶湯
を自然に流下させるものであるから、広幅でしかも均一
厚さの超薄板を鋳造することができるものである。また
溜った溶湯の下から流下させるものであるから、その溶
湯の上面に浮かぶ不純物を引き込むこともなく、高品質
の超薄板を鋳造することができるものである。As described above, according to the present invention, since the molten metal naturally flows down from between both rotating layers, it is possible to cast an ultra-thin plate having a wide width and a uniform thickness. Furthermore, since the molten metal is made to flow down from below the accumulated molten metal, it is possible to cast high-quality ultra-thin plates without drawing in impurities floating on the top surface of the molten metal.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明の一実施例を示し、第１図は両回転層に溶湯
を溜めている状態の概略縦断面図、第２図は超薄板の連
続鋳造状態を示す概略縦断面図である。 （１）・・・タンディツシュ、（２）・・・回転堰、（
３）−・・七−ルトローラ、（４）・・・ローラコンベ
ア、（５）・・・スクレーバ、（６）・・・超薄板、（
７）・・・溶湯代理人　　　森　　本　　義　　弘 ；ニー’ｉ、　１　　区The figures show an embodiment of the present invention, in which Fig. 1 is a schematic vertical sectional view showing a state in which molten metal is stored in both rotating layers, and Fig. 2 is a schematic vertical sectional view showing a state in which an ultra-thin plate is continuously cast. . (1)...Tanditshu, (2)...Rotating weir, (
3) ---7-ru roller, (4) --- roller conveyor, (5) --- scraper, (6) --- ultra-thin plate, (
7)... Molten metal agent Yoshihiro Morimoto; Ni'i, 1st ward

Claims (1)

【特許請求の範囲】[Claims] １、　タ、７４イッシュから互いに当接させられた一対
の断熱性ローラ状回転堰間に溶湯を注入し、両回転層間
の溶湯量が所定量にたつしたならば両回転堰を互いに離
間させ、これによって両回転層間から溶湯をその下にお
いて一方向へ回転する七−ルビ０−ラ上に流下させ、該
モールド０−ラ上で凝固した超薄板を受取って所定場所
まで搬送することを特徴とする超薄板を連続鋳造する方
法。1. Inject molten metal from a 74-ish between a pair of insulating roller-shaped rotating weirs that are brought into contact with each other, and when the amount of molten metal between both rotating layers reaches a predetermined amount, separate both rotating weirs from each other, This causes the molten metal to flow down from between the two rotating layers onto the seven-ruby roller rotating in one direction underneath, and the ultra-thin plate solidified on the mold roller is received and transported to a predetermined location. A method of continuous casting of ultra-thin plates.