JPH09141400A - Strip continuous caster and strip continuous casting process - Google Patents

Strip continuous caster and strip continuous casting process

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Publication number
JPH09141400A
JPH09141400A JP32800795A JP32800795A JPH09141400A JP H09141400 A JPH09141400 A JP H09141400A JP 32800795 A JP32800795 A JP 32800795A JP 32800795 A JP32800795 A JP 32800795A JP H09141400 A JPH09141400 A JP H09141400A
Authority
JP
Japan
Prior art keywords
pair
thin plate
continuous casting
side weirs
short side
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Withdrawn
Application number
JP32800795A
Other languages
Japanese (ja)
Inventor
Shinichi Fukunaga
新一 福永
Tomoharu Shimokasa
知治 下笠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP32800795A priority Critical patent/JPH09141400A/en
Publication of JPH09141400A publication Critical patent/JPH09141400A/en
Withdrawn legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a strip continuous caster and strip continuous casting process excellent in workability, productivity, mass production and reliability, in which generation of a fishskin, recessed part, etc., is extremely suppressed, a strip having excellent surface condition, uniform thickness, homogeneous structure is continuously produced, in one time and series casting operation, multi-strips can be continuously cast, further a width of the strip continuously cast can be changed, further a thickness of the strip continuously cast is made uniform along the width direction. SOLUTION: The caster has a pair of casting rolls 11 arranged apart in a prescribed distance in parallel and a frame shaped mold 12, which is arranged with a pair of long side weirs 12a above a pair of casting rolls 11 along a side line of a pair of casting rolls 11 and a pair of short weirs 12b arranged so that its lower faces are on the side circumference of a pair of casting rolls 11 and between a pair of the long side weirs 12a.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、溶融金属から連続
的に薄板（又は金属薄板という）を鋳造する薄板連続鋳
造装置（又はストリップキャスタ（Ｓｔｒｉｐ Ｃａｓ
ｔｅｒ：ＳＴＣ）という）、及び、薄板連続鋳造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin plate continuous casting device (or strip caster (Strip Cas)) for continuously casting thin plates (or metal thin plates) from molten metal.
ter: STC)) and a thin plate continuous casting method.

【０００２】[0002]

【従来の技術】近年、溶融金属から連続的に薄板を鋳造
するための、薄板連続鋳造装置が広範に利用されてい
る。この薄板連続鋳造装置は、従来の連続鋳造装置（又
はＣｏｎｔｉｎｕｏｕｓ Ｃａｓｔｉｎｇ：ＣＣとい
う）に比べ、板厚の薄い薄板を、連続鋳造することがで
き、後工程の圧延工程等を、大幅に簡略化することがで
きるので、生産効率を格段に向上できるものである。従
って、ほぼ最終製品形状（又はニアーネットシェイプと
いう）で連続鋳造される薄板は、良好な表面性状等、高
い品質精度が要求されている。2. Description of the Related Art In recent years, a continuous thin plate casting apparatus for continuously casting thin plates from molten metal has been widely used. This thin plate continuous casting apparatus can continuously cast a thin sheet having a thin plate thickness, as compared with a conventional continuous casting apparatus (or called Continuous Casting: CC), and greatly simplifies a rolling process in a post process. Therefore, the production efficiency can be remarkably improved. Therefore, a thin plate that is continuously cast in almost the final product shape (or called a near net shape) is required to have high quality accuracy such as good surface properties.

【０００３】ここで、図面を参照しつつ従来の実施の形
態に係る薄板連続鋳造装置について説明する。図１７は
従来の実施の形態に係る薄板連続鋳造装置の説明図、図
１８は同薄板連続鋳造装置を用いた薄板連続鋳造方法で
連続鋳造された薄板の要部正面図、図１９は同薄板連続
鋳造装置を用いた薄板連続鋳造方法で連続鋳造された薄
板の要部側断面図、図２０は同薄板連続鋳造装置を用い
た薄板連続鋳造方法における連続鋳造操業中の一対の鋳
造ロールの側線方向に沿った外周面の温度分布図、図２
１は同薄板連続鋳造装置を用いた薄板連続鋳造方法で連
続鋳造された薄板の平断面図である。Now, a thin plate continuous casting apparatus according to a conventional embodiment will be described with reference to the drawings. FIG. 17 is an explanatory view of a thin plate continuous casting apparatus according to a conventional embodiment, FIG. 18 is a front view of a main part of a thin plate continuously cast by a thin plate continuous casting method using the thin plate continuous casting apparatus, and FIG. 19 is the same thin plate. FIG. 20 is a sectional side view of a main part of a thin plate continuously cast by a thin plate continuous casting method using a continuous casting device, and FIG. 20 is a lateral line of a pair of casting rolls during a continuous casting operation in the thin plate continuous casting method using the thin plate continuous casting device. Temperature distribution diagram of the outer peripheral surface along the direction, Fig. 2
FIG. 1 is a plan sectional view of a thin plate continuously cast by a thin plate continuous casting method using the same thin plate continuous casting apparatus.

【０００４】従来の実施の形態に係る薄板連続鋳造装置
２００は、図１７に示すように、タンディッシュ等の注
湯鍋５４から、浸漬ノズル５５を介して、注湯される溶
融金属５６を凝固させると共に、この溶融金属５６が、
凝固されて生成された薄板５７を、下方に引抜くための
一対の鋳造ロール５１と、一対の鋳造ロール５１の両端
部から、溶融金属５６が漏れるのを防止するために一対
の鋳造ロール５１の両端部に、それぞれ近接配置された
一対のサイド堰５２とを有するものである。As shown in FIG. 17, a thin plate continuous casting apparatus 200 according to a conventional embodiment solidifies a molten metal 56 to be poured from a pouring pan 54 such as a tundish via an immersion nozzle 55. With this molten metal 56,
The thin plate 57 produced by solidification is a pair of casting rolls 51 for pulling out downward, and a pair of casting rolls 51 for preventing the molten metal 56 from leaking from both ends of the pair of casting rolls 51. It has a pair of side dams 52 arranged close to each other at both ends.

【０００５】続いて、従来の実施の形態に係る薄板連続
鋳造装置２００を用いた薄板連続鋳造方法について説明
する。まず、注湯鍋５４に貯留された溶融金属５６を、
浸漬ノズル５５を介して、一対の鋳造ロール５１及び一
対のサイド堰５２で形成された湯溜部５３内に注湯す
る。次に、注湯された溶融金属５６は、一対の鋳造ロー
ル５１の外周面との接触部位から急激に冷却されて、凝
固核（図示せず）が急速に生成されると共に、この生成
された凝固核が急速に成長して、視認可能な凝固シェル
５７ａが生成される。次に、生成された凝固シェル５７
ａは、急速に成長すると共に、一対の鋳造ロール５１の
最近接部位近傍で、一対の鋳造ロール５１により、圧接
されて薄板５７が生成される。次に、生成された薄板５
７は、そのまま下方に引抜かれる。そして、前記工程が
連続的に行われることにより、薄板５７が連続鋳造され
るものである。なお、凝固核から凝固シェルになるまで
のものを凝固物ともいう。Next, a continuous thin plate casting method using the conventional thin plate continuous casting apparatus 200 will be described. First, the molten metal 56 stored in the pouring pan 54
Through the immersion nozzle 55, the molten metal is poured into the molten metal reservoir 53 formed by the pair of casting rolls 51 and the pair of side dams 52. Next, the molten metal 56 poured is rapidly cooled from the contact portion with the outer peripheral surface of the pair of casting rolls 51, and solidification nuclei (not shown) are rapidly generated and this is also generated. The solidification nuclei grow rapidly to produce a visible solidification shell 57a. Next, the solidified shell 57 produced
While a grows rapidly, the thin plate 57 is produced by being pressure-contacted by the pair of casting rolls 51 in the vicinity of the closest position of the pair of casting rolls 51. Next, the generated thin plate 5
7 is pulled down as it is. Then, the thin plate 57 is continuously cast by continuously performing the above steps. The thing from a solidification nucleus to a solidification shell is also called a solidification thing.

【０００６】[0006]

【発明が解決しようとする課題】しかしながら、前記従
来の薄板連続鋳造装置２００では、湯溜部５３内に注湯
された溶融金属５６が、高速で回転する一対の鋳造ロー
ル５１や、次々に湯溜部５３内に注湯される溶融金属５
６によって、振動（又は揺動）し易いために、特に、図
１７中、Ｐで示す溶融金属５６の湯面と、一対の鋳造ロ
ール５１の外周面の接点で生成された凝固シェル５７ａ
が、一対の鋳造ロール５１の外周面から、離接（又は剥
離）し易いので、図１８、図１９に示すように、薄板５
７の表面が鮫の皮のように“ざらざら”した、いわゆる
鮫肌状となる等、薄板５７の表面性状が悪化するという
問題点を有していた。さらに、前記の如く、薄板５７の
表面に、鮫肌等が発生すると、たとえ、後工程で圧延工
程等を実施しても、圧延された薄板５７の表面に、鮫肌
の模様が残る等、表面性状を改善することができず、こ
の結果、要求される表面性状を満足することができない
という問題点を有していた。また、連続鋳造された薄板
５７は、通常、薄板連続鋳造装置２００の下方に配置さ
れた、ピンチロール等を経た後、コイル状に巻装されて
いるが、前記の如く、表面に鮫肌等が発生した薄板５７
を巻装してなるコイル（図示せず）は、そのまま廃棄す
るしかなく、極めて歩留りが低下する等、信頼性に劣る
という問題点を有していた。However, in the above-described conventional thin plate continuous casting apparatus 200, the molten metal 56 poured into the molten metal reservoir 53 is a pair of casting rolls 51 rotating at high speed, and the molten metal 56 is melted one after another. Molten metal 5 poured into the reservoir 53
In order to easily vibrate (or oscillate), the solidified shell 57a generated at the contact point between the molten metal 56 indicated by P in FIG.
However, since it is easy to come into contact with (or separate from) the outer peripheral surfaces of the pair of casting rolls 51, as shown in FIGS.
There is a problem that the surface quality of the thin plate 57 deteriorates, such that the surface of No. 7 is "rough" like a shark skin, that is, it has a so-called shark skin shape. Further, as described above, when shark skin or the like is generated on the surface of the thin plate 57, even if a rolling step or the like is performed in a later step, the surface texture such as a shark skin pattern remaining on the surface of the rolled thin plate 57. However, there is a problem that the required surface properties cannot be satisfied as a result. In addition, the continuously cast thin plate 57 is usually wound below the thin plate continuous casting apparatus 200 through a pinch roll or the like and then wound into a coil, but as described above, a shark skin or the like is formed on the surface. Thin plate 57 generated
The coil (not shown) formed by winding the coil has a problem that it is inferior in reliability such that the yield is extremely reduced and the coil is not disposed as it is.

【０００７】また、前記溶融金属５６の湯面上には、こ
の溶融金属５６の、空気酸化の防止のために投入された
湯面保護材５８が浮遊しているが、前記溶融金属５６の
揺動によって、この湯面保護材５８が、薄板５７中に巻
き込まれ易く、このため、前記と同様に、薄板５７の表
面に鮫肌状の疵（又は凹凸）が発生するという問題点を
有していた。また、前記と同様に、溶融金属５６と共
に、注湯鍋５４内に注湯された、スラグや、溶融金属５
６が酸化して生成された酸化物、更に、一対のサイド堰
５２又は一対の鋳造ロール５１が溶損して生成された溶
融酸化物等（以下これらをスカムという）の不純物（又
は異物という）を巻き込み易いために、薄板５７の表面
に疵が発生するという問題点を有していた。さらに、凝
固シェル５７ａと、一対の鋳造ロール５１の外周面との
間に、介在されるパウダー等が、前記溶融金属５６の揺
動によって、除去されて、一対の鋳造ロール５１の外周
面に、凝固シェル５７ａや凝固核が形成されると、一対
の鋳造ロール５１の回転（換言すると薄板５７の引抜
き）に伴って、形成された凝固シェル５７ａが引き千切
られ、前記と同様に、薄板５７の表面に疵が発生すると
いう問題点を有していた。On the molten metal surface of the molten metal 56, there is suspended a molten metal surface protective material 58 for preventing the air oxidation of the molten metal 56. Due to the movement, the molten metal surface protection material 58 is easily caught in the thin plate 57, and therefore, similar to the above, there is a problem that a shark-skin-like flaw (or unevenness) is generated on the surface of the thin plate 57. It was Further, similarly to the above, with the molten metal 56, the slag poured into the pouring pot 54 and the molten metal 5
Oxides produced by oxidation of 6 and further impurities (or foreign substances) such as molten oxides produced by melting of the pair of side dams 52 or the pair of casting rolls 51 (hereinafter referred to as scum). There is a problem in that a flaw is generated on the surface of the thin plate 57 because it is easily caught. Further, the powder or the like interposed between the solidified shell 57a and the outer peripheral surfaces of the pair of casting rolls 51 is removed by the swing of the molten metal 56, and the outer peripheral surfaces of the pair of casting rolls 51 are When the solidification shell 57a and the solidification nuclei are formed, the formed solidification shell 57a is torn off in accordance with the rotation of the pair of casting rolls 51 (in other words, the withdrawal of the thin plate 57). There was a problem that flaws were generated on the surface.

【０００８】また、前記の如く、薄板５７中に、湯面保
護材５８やパウダー等が巻き込まれると、この湯面保護
材５８等の熱伝導率が、凝固シェル５７ａの熱伝導率に
比べて、小さいために、巻き込まれた湯面保護材５８等
の、周辺の溶融金属５６が凝固し難くなって、薄板５７
中に溶融金属５６が介在してしまい、一対の鋳造ロール
５１から引抜かれたとき、溶融金属５６の静圧によっ
て、湯面保護材５８等が薄板５７から外方に押し出され
て、溶融金属５６が流出する、いわゆるブレイクアウト
（以下ＢＯという）を発生するという問題点を有してい
た。一方、前記の如く、一対の鋳造ロール５１の外周面
に、凝固シェル５７ａが形成されると、凝固シェル５７
ａが、薄板５７の引抜きによって、引き千切られること
により、一対の鋳造ロール５１から引抜かれたとき、溶
融金属５６が流出する、いわゆる拘束性ブレイクアウト
（以下拘束性ＢＯという）が発生するという問題点を有
していた。さらに、溶融金属５６が、一対の鋳造ロール
５１によって、急激に冷却されて凝固される、いわゆる
急冷凝固によって、薄板５７の組織にチル相が多く形成
される等、均質かつ均一な組織を得ることができず、薄
板５７に異方性を生じる等、信頼性に劣るという問題点
を有していた。Further, as described above, when the molten metal surface protection material 58, powder, etc. are caught in the thin plate 57, the thermal conductivity of this molten metal surface protection material 58, etc. is higher than that of the solidified shell 57a. Since it is small, it is difficult for the molten metal 56 in the vicinity such as the rolled-up surface protection material 58 to solidify, and the thin plate 57
When the molten metal 56 intervenes inside and is withdrawn from the pair of casting rolls 51, the static pressure of the molten metal 56 pushes the molten metal surface protective material 58 and the like outward from the thin plate 57, and the molten metal 56 There is a problem that so-called breakout (hereinafter referred to as BO) occurs. On the other hand, as described above, when the solidification shell 57a is formed on the outer peripheral surfaces of the pair of casting rolls 51, the solidification shell 57a is formed.
When a is pulled out from the pair of casting rolls 51 by being cut into pieces by pulling out the thin plate 57, the molten metal 56 flows out, so-called restraint breakout (hereinafter referred to as restraint BO) occurs. Had a point. Further, the molten metal 56 is rapidly cooled and solidified by the pair of casting rolls 51, that is, so-called rapid solidification, so that a chill phase is formed in a large amount in the structure of the thin plate 57, and a homogeneous and uniform structure is obtained. However, there is a problem in that the thin plate 57 is anisotropic and the reliability is poor.

【０００９】また、従来の薄板連続鋳造装置２００で
は、一度の連続鋳造操業で薄板５７を同時に多条連続鋳
造することや、連続鋳造操業中に薄板５７の幅（以下板
幅という）を変更することができないという問題点を有
していた。このため、従来は、薄板連続鋳造装置２００
によって、一旦、目的幅より大幅の薄板５７を連続鋳造
した後、この連続鋳造された薄板５７を、目的幅に合わ
せてスリッター等の切断装置で、切断していたので、生
産性や量産性に劣るという問題点を有していた。さら
に、前記の如く、薄板５７を目的幅に合わせて切断する
と、薄板５７の材質にも依るが、切断された薄板５７の
切断面の外縁部に、いわゆるバリが発生したり、或いは
薄板５７の切断面近傍部が波打つ、いわゆる耳波（又は
板波という）が発生し、後工程の圧延工程等に支障を来
す等、作業性や生産性、量産性に劣るという問題点を有
していた。また、連続鋳造された薄板５７の幅と、目的
とする薄板５７の幅の差が、小さくなればなるほど、目
的幅に合わせて切断するのが困難となり、作業性や生産
性に劣るという問題点を有していた。Further, in the conventional continuous thin plate casting apparatus 200, the thin plate 57 is simultaneously continuously multi-cast in one continuous casting operation, and the width of the thin plate 57 (hereinafter referred to as the plate width) is changed during the continuous casting operation. It had a problem that it could not. Therefore, conventionally, the thin plate continuous casting apparatus 200 has been used.
Therefore, once the thin plate 57 having a larger width than the target width is continuously cast, the continuously cast thin plate 57 is cut by a cutting device such as a slitter according to the target width. It had the problem of being inferior. Further, as described above, when the thin plate 57 is cut in accordance with the target width, so-called burrs are generated on the outer edge portion of the cut surface of the cut thin plate 57, or the thin plate 57 is cut depending on the material of the thin plate 57. There is a problem in that workability, productivity, and mass productivity are inferior such that a so-called ear wave (or plate wave) is generated in the vicinity of the cut surface, which interferes with the rolling process in the subsequent process. It was In addition, the smaller the difference between the width of the continuously cast thin plate 57 and the width of the target thin plate 57, the more difficult it is to cut according to the target width, resulting in poor workability and productivity. Had.

【００１０】また、湯溜部５３内の溶融金属５６の温度
が、その略中央部と他の部位とで温度差を生じることに
起因して、図２０に示すように、一対の鋳造ロール５１
の外周面の温度がその側線方向に沿って異なってしまう
ために、図２１に示すように、薄板５７の中央部が凹む
という問題点を有していた。すなわち、湯溜部５３内の
略中央部の溶融金属５６の温度は、注湯鍋５４から次々
に溶融金属５６が注湯されるために高温であるが、湯溜
部５３の両端側の部位の溶融金属５６の温度は、一対の
サイド堰５２によって約３０℃〜１００℃低い温度にな
るために、一対の鋳造ロール５１の外周面に、図２０に
示すような温度分布が生じる。これにより、一対の鋳造
ロール５１の側線方向の、中央部に接した部位の、溶融
金属５６の温度と、一対の鋳造ロール５１の側線方向
の、両端部に接した部位の、溶融金属５６の温度が異な
ってしまい、冷却される温度差の大きな、中央部に接す
る部位の、溶融金属５６の方が、大きく熱収縮すること
により、薄板５７の中央部が凹む（換言すると薄板５７
の中央部の板厚が薄くなる）ことになる。このため、連
続鋳造操業の際に、一対の鋳造ロール５１の側線方向の
温度を、均一にする何等かの方法が希求されていた。Further, as shown in FIG. 20, the temperature of the molten metal 56 in the molten metal pool 53 causes a temperature difference between the substantially central portion and the other portions, so that a pair of casting rolls 51 are formed.
Since the temperature of the outer peripheral surface of the sheet varies along the lateral direction, there is a problem that the central portion of the thin plate 57 is recessed as shown in FIG. That is, the temperature of the molten metal 56 at the substantially central portion in the hot water reservoir 53 is high because the molten metal 56 is poured from the pouring pan 54 one after another, but Since the temperature of the molten metal 56 is lowered by about 30 ° C. to 100 ° C. by the pair of side dams 52, a temperature distribution as shown in FIG. 20 is generated on the outer peripheral surfaces of the pair of casting rolls 51. Thereby, in the lateral line direction of the pair of casting rolls 51, the temperature of the molten metal 56 in the region in contact with the central portion, and in the lateral line direction of the pair of casting rolls 51 in the region in contact with both ends of the molten metal 56. The molten metal 56, which is in contact with the central portion and has a large temperature difference to be cooled due to the difference in temperature, undergoes large thermal contraction, so that the central portion of the thin plate 57 is recessed (in other words, the thin plate 57.
The thickness of the central part of the plate becomes thin). Therefore, there has been a demand for some method for making the temperature of the pair of casting rolls 51 in the lateral direction uniform during the continuous casting operation.

【００１１】本発明はこのような事情に鑑みてなされた
もので、鮫肌や凹み等の発生を極力抑制することがで
き、表面性状に優れた均一な板厚、及び、均質な組織を
有する薄板を連続鋳造することができると共に、一度の
連続鋳造操業の際に、多条の薄板を連続鋳造することが
でき、さらに、連続鋳造される薄板の板幅を変更するこ
とができ、また、さらに、連続鋳造される薄板の板厚
を、板幅方向に沿って均一にすることができる作業性や
生産性、量産性、信頼性に優れた薄板連続鋳造装置を提
供すること、及び、鮫肌や凹み等の発生を極力抑制し、
表面性状に優れたニアーネットシェイプの薄板を、高い
生産性や量産性、高い製品得率で連続鋳造することがで
きる薄板連続鋳造装置及び薄板連続鋳造方法を提供する
ことを目的とする。The present invention has been made in view of the above circumstances, and it is possible to suppress the generation of shark skin and dents as much as possible, and a thin plate having a uniform surface thickness and a uniform texture. Can be continuously cast, at the time of one continuous casting operation, can be continuously cast multiple strips, further, the width of the continuously cast sheet can be changed, and To provide a thin plate continuous casting device having excellent workability, productivity, mass productivity, and reliability that can make the plate thickness of continuously cast thin plates uniform along the plate width direction, and to provide shark skin and Minimize the occurrence of dents,
An object of the present invention is to provide a thin plate continuous casting apparatus and a thin plate continuous casting method capable of continuously casting a near net shape thin plate having an excellent surface property with high productivity, mass productivity and high product yield.

【００１２】[0012]

【課題を解決するための手段】前記目的に沿う請求項１
記載の薄板連続鋳造装置は、所定距離離間して平行状態
で配置される一対の鋳造ロールと、前記一対の鋳造ロー
ルの上方に、該一対の鋳造ロールの側線に沿って配置さ
れる一対の長辺堰、及び下面が前記一対の鋳造ロールの
側周上で、かつ前記一対の長辺堰の間に配置される一対
の短辺堰を備えた枠状の鋳型とを有する。According to the present invention, there is provided a semiconductor device comprising:
The thin plate continuous casting device described is a pair of casting rolls arranged in parallel in a state of being separated by a predetermined distance, and above the pair of casting rolls, a pair of lengths arranged along a lateral line of the pair of casting rolls. A side weir and a frame-shaped mold having a pair of short side weirs whose lower surface is disposed on the side circumference of the pair of casting rolls and between the pair of long side weirs.

【００１３】請求項２記載の薄板連続鋳造装置は、請求
項１記載の薄板連続鋳造装置において、前記一対の短辺
堰の間に、少なくとも１以上のスペーサー堰を備えてい
る。A thin plate continuous casting apparatus according to a second aspect is the thin plate continuous casting apparatus according to the first aspect, wherein at least one spacer weir is provided between the pair of short side weirs.

【００１４】請求項３記載の薄板連続鋳造装置は、請求
項１又は２記載の薄板連続鋳造装置において、前記鋳型
の内面を上から下に向かって拡大するテーパー面として
いる。A thin plate continuous casting apparatus according to a third aspect of the present invention is the thin plate continuous casting apparatus according to the first or second aspect, wherein the inner surface of the mold is a tapered surface that expands from top to bottom.

【００１５】請求項４記載の薄板連続鋳造装置は、請求
項３記載の薄板連続鋳造装置において、前記テーパー面
のテーパー比（α）を、０．３％≦α≦２％の範囲内と
している。A thin plate continuous casting apparatus according to a fourth aspect is the thin plate continuous casting apparatus according to the third aspect, wherein the taper ratio (α) of the tapered surface is within a range of 0.3% ≦ α ≦ 2%. .

【００１６】請求項５記載の薄板連続鋳造装置は、請求
項１〜４のいずれか１項に記載の薄板連続鋳造装置にお
いて、前記一対の短辺堰には、該一対の短辺堰を前記一
対の鋳造ロールの側線に沿って移動させる進退手段をそ
れぞれ備えている。A thin plate continuous casting apparatus according to claim 5 is the thin plate continuous casting apparatus according to any one of claims 1 to 4, wherein the pair of short side weirs are provided with the pair of short side weirs. A pair of advancing and retracting means for moving along the lateral lines of the pair of casting rolls is provided.

【００１７】請求項６記載の薄板連続鋳造装置は、請求
項５記載の薄板連続鋳造装置において、前記進退手段
は、上下一対の直線駆動手段によって構成している。A thin plate continuous casting apparatus according to a sixth aspect of the present invention is the thin plate continuous casting apparatus according to the fifth aspect, wherein the advancing / retreating means comprises a pair of upper and lower linear driving means.

【００１８】請求項７記載の薄板連続鋳造装置は、請求
項１〜６のいずれか１項に記載の薄板連続鋳造装置にお
いて、前記一対の鋳造ロールが、一方向に長尺でかつそ
の中心軸方向の所定部から両端部に向かって縮径された
縮径部を有するロール胴体部と、該ロール胴体部の前記
縮径部に、少なくとも前記ロール胴体部の外周面の材質
に比し低熱伝導性の材料を、前記ロール胴体部の縮径部
を除く部位と同径状に被膜したロール表面部とを有す
る。A thin plate continuous casting apparatus according to claim 7 is the thin plate continuous casting apparatus according to any one of claims 1 to 6, wherein the pair of casting rolls are elongated in one direction and have a central axis. Direction to the both ends of the roll body portion having a reduced diameter portion from a predetermined portion in the direction, and to the reduced diameter portion of the roll body portion, low thermal conductivity compared to at least the material of the outer peripheral surface of the roll body portion. A roll material having a uniform diameter and a portion excluding a reduced diameter portion of the roll body portion.

【００１９】請求項８記載の薄板連続鋳造方法は、前記
一対の短辺堰の上部又は下部を回動中心として、該一対
の短辺堰を、前記一対の鋳造ロールの側線方向で、前記
一対の短辺堰同士が近接又は離反する方向に僅少角度傾
斜させる第１傾斜動工程と、該第１傾斜動工程で所定角
度傾斜された前記一対の短辺堰の前記回動中心と反対側
の下部又は上部を回動中心として、僅少角度傾斜させ
て、前記一対の短辺堰を前記第１の傾斜動工程の移動方
向と同一側に移動する第２傾斜動工程とを備え、前記一
対の鋳造ロールで連続鋳造される薄板の幅を変更制御す
る。The thin plate continuous casting method according to claim 8 is characterized in that the pair of short side weirs are rotated in the lateral direction of the pair of casting rolls with the upper or lower part of the pair of short side weirs being the center of rotation. Of the short side weirs on the side opposite to the rotation center of the pair of short side weirs inclined by a predetermined angle in the direction in which the short side weirs approach or separate from each other, and a predetermined angle in the first tilting step. A second tilting motion step of moving the pair of short side weirs to the same side as the moving direction of the first tilting motion step by tilting the lower part or the upper part as a rotation center by a slight angle, and The width of the thin plate continuously cast by the casting roll is changed and controlled.

【００２０】請求項９記載の薄板連続鋳造方法は、請求
項８記載の薄板連続鋳造方法において、前記第１傾斜動
工程と第２傾斜動工程の間に、前記一対の短辺堰をその
ままの姿勢を保持して、前記第１傾斜動工程の移動方向
と同一側に平行移動する平行移動工程を備える。A thin plate continuous casting method according to a ninth aspect is the thin plate continuous casting method according to the eighth aspect, wherein the pair of short side weirs are left as they are between the first tilting step and the second tilting step. A parallel movement step of holding the posture and performing parallel movement in the same direction as the movement direction of the first tilting movement step is provided.

【００２１】ここで、前記一対の鋳造ロールは、前記鋳
型と協働して、上方から注湯される溶融金属を貯留す
る、いわゆる湯溜部を形成すると共に、前記溶融金属を
凝固させ、かつ前記溶融金属が凝固された薄板を下方に
引抜くものである。また、一対の鋳造ロールは、溶融金
属の種類や、連続鋳造操業時の鋳造速度等によって定ま
る、薄板の板厚に応じて、適宜所定距離、離間配置され
ると共に、前記鋳造速度に応じた周速度を持って、それ
ぞれ逆回転駆動される。なお、一対の鋳造ロールの側線
とは、一対の鋳造ロールの外周面上で、一対の鋳造ロー
ルの中心軸方向に沿った仮想線分をいい、また、一対の
鋳造ロールの側線方向とは、前記側線に沿った方向をい
うものである。Here, the pair of casting rolls cooperates with the mold to form a so-called molten metal pool for storing molten metal poured from above, solidifies the molten metal, and The thin plate in which the molten metal is solidified is pulled out downward. Further, the pair of casting rolls is determined by the type of molten metal, the casting speed during continuous casting operation, and the like, depending on the plate thickness of the thin plate, appropriately spaced by a predetermined distance, and the circumference corresponding to the casting speed. They have different speeds and are driven in reverse rotation. Incidentally, the side line of the pair of casting rolls, on the outer peripheral surface of the pair of casting rolls, refers to a virtual line segment along the central axis direction of the pair of casting rolls, and the side line direction of the pair of casting rolls, It refers to the direction along the lateral line.

【００２２】また、前記一対の鋳造ロールは、前記の如
く、前記溶融金属を凝固させるための冷却手段を有する
ものである。また、前記一対の鋳造ロールは、従来の薄
板の中央部の凹み等を防止する構造とされるのが好まし
い。具体的には、連続鋳造操業中の、一対の鋳造ロール
の側線方向に沿った、外周面の温度分布に応じて、一方
向に長尺で、かつ、その中心軸方向の所定部から、両端
部に向かって、縮径された縮径部を有する、ロール胴体
部の前記縮径部に、少なくとも前記ロール胴体部の、外
周面の材質に比べ、低熱伝導性の材料を、前記ロール胴
体部の縮径部を除く部位と、同径状に被膜した鋳造ロー
ル等が挙げられる。Further, the pair of casting rolls have cooling means for solidifying the molten metal, as described above. Further, it is preferable that the pair of casting rolls have a structure for preventing a depression or the like in the central portion of a conventional thin plate. Specifically, during continuous casting operation, along the lateral direction of the pair of casting rolls, depending on the temperature distribution of the outer peripheral surface, long in one direction, and from a predetermined portion in the central axis direction, both ends, The roll body portion, at least in the reduced diameter portion of the roll body portion, the material having a lower thermal conductivity than the material of the outer peripheral surface of the roll body portion. The cast roll and the like, which have the same diameter as the part excluding the reduced diameter part, are mentioned.

【００２３】なお、前記一対の鋳造ロールの縮径部に、
被膜される低熱伝導性材料としては、酸化アルミニウム
（アルミナ：Ａｌ2 Ｏ3 ）、炭化タングステン（Ｗ
Ｃ）、炭化タンタル（ＴａＣ）又はこれらの混合物等が
挙げられる。また、前記低熱伝導性材料の被膜方法とし
ては、プラズマ溶射法等の溶射法が挙げられる。これに
より、溶射設備費はかかるが、簡単かつ短時間で被膜す
ることができるので、生産性や量産性を向上させること
ができる。なお、一対の鋳造ロールの大きさは、特に規
定されるものではないが、通常、その直径（φ）が１ｍ
≦φ≦１．５ｍの範囲内で、中心軸方向の長さ（以下胴
長という）の長さ（Ｌ）が０．７ｍ≦Ｌ≦１．８ｍの範
囲内のものが使用される。In the reduced diameter portion of the pair of casting rolls,
As the low thermal conductive material to be coated, aluminum oxide (alumina: Al 2 O 3 ), tungsten carbide (W
C), tantalum carbide (TaC), or a mixture thereof. Moreover, as a coating method of the low thermal conductivity material, a thermal spraying method such as a plasma thermal spraying method can be mentioned. Thereby, although the thermal spraying equipment cost is required, the coating can be performed easily and in a short time, so that productivity and mass productivity can be improved. The size of the pair of casting rolls is not particularly limited, but the diameter (φ) is usually 1 m.
Within the range of ≦ φ ≦ 1.5 m, the length (L) of the length in the central axis direction (hereinafter referred to as the body length) is within the range of 0.7 m ≦ L ≦ 1.8 m.

【００２４】また、前記鋳型を構成する前記一対の長辺
堰や、前記一対の短辺堰、前記スペーサー堰は、前記の
如く、前記一対の鋳造ロールと協働して、上方から注湯
される溶融金属を貯留する、いわゆる湯溜部を形成する
と共に、前記湯溜部内に注湯された溶融金属を湯面下凝
固させるものである。なお、前記湯面下凝固とは、換言
するならば、湯溜部内に注湯された溶融金属の湯面を、
一対の鋳造ロールの外周面で凝固開始される、凝固開始
位置より上方にして、前記溶融金属を凝固させるもので
ある（図２参照）。これにより、たとえ、溶融金属が揺
動しても、従来のような、湯面保護材やスカム等の不純
物等の巻き込みを防止することができる。Further, the pair of long side weirs, the pair of short side weirs, and the spacer weir that compose the casting mold are poured from above in cooperation with the pair of casting rolls as described above. A so-called molten metal reservoir for storing the molten metal is formed, and the molten metal poured into the molten metal reservoir is solidified below the molten metal surface. In addition, the above-mentioned under-surface solidification, in other words, the molten metal surface poured into the molten metal part,
The molten metal is solidified above the solidification start position where solidification is started on the outer peripheral surfaces of the pair of casting rolls (see FIG. 2). Thereby, even if the molten metal sways, it is possible to prevent the inclusion of impurities such as the surface protection material and scum as in the conventional case.

【００２５】なお、湯溜部内に注湯された、溶融金属の
湯面から、凝固開始位置（又は溶融金属と凝固シェルの
界面）までの距離（Ｈ）は、３ｃｍ≦Ｈ≦１２ｃｍ、好
適には３ｃｍ≦Ｈ≦１０ｃｍの範囲内とされるのが好ま
しい。湯溜部内の溶融金属の湯面から、凝固開始位置ま
での距離が、３ｃｍ未満では、生成される凝固シェル中
に、湯面保護材やスカム等の不純物等を巻き込み易くな
り、生成された薄板の表面性状が、悪化する傾向が現れ
出すからである。また、湯溜部内の溶融金属の湯面か
ら、凝固開始位置までの距離が、１０ｃｍを越えると、
溶融金属の溶融状態を維持するための、加熱手段等の配
置面積や定格容量等を大きくしなければならないため
に、ランニングコストが増大する傾向が現れ出し、特
に、１２ｃｍを越えるとその傾向が著しくなるからであ
る。The distance (H) from the surface of the molten metal poured into the molten metal pool to the solidification start position (or the interface between the molten metal and the solidified shell) is preferably 3 cm≤H≤12 cm. Is preferably within the range of 3 cm ≦ H ≦ 10 cm. If the distance from the surface of the molten metal in the molten metal pool to the solidification start position is less than 3 cm, impurities such as the surface protection material and scum will be easily engulfed in the solidification shell to be produced, and the thin plate produced. This is because the surface quality of the product tends to deteriorate. If the distance from the molten metal surface in the pool to the solidification start position exceeds 10 cm,
The running cost tends to increase because the arrangement area of the heating means and the rated capacity for maintaining the molten state of the molten metal must be increased. Especially, when the length exceeds 12 cm, the tendency becomes remarkable. Because it will be.

【００２６】また、前記一対の長辺堰や、前記一対の短
辺堰、前記スペーサー堰は、溶融金属を溶融状態で維持
するために、断熱性の材料で形成されるのが好ましい。
この断熱性の材料として具体的には、窒化硅素（Ｓｉ3
Ｎ4 ）、窒化硼素（ＢＮ）、硼化ジルコニウム（ＺｒＢ
2 ）、窒化アルミニウム（ＡｌＮ）、酸化ジルコニウム
（ジルコニア：ＺｒＯ2 ）、ジルコン（Ｚｒ（Ｓｉ
Ｏ4 ））、又は窒化硅素に窒化硼素を２０ｗｔ％〜３０
ｗｔ％含有させたもの（Ｓｉ3 Ｎ4 −３０ｗｔ％ＢＮ）
等や、ろう石質煉瓦、シャモット質煉瓦、高アルミナ質
煉瓦、ジルコン質煉瓦等の耐火物等が挙げられる。さら
に、前記一対の長辺堰や、前記一対の短辺堰、前記スペ
ーサー堰には、前記の如く、誘導加熱又は電熱ヒータ等
の加熱手段を設けてもよい。Further, the pair of long side weirs, the pair of short side weirs, and the spacer weir are preferably formed of a heat insulating material in order to maintain the molten metal in a molten state.
Specifically as this heat insulating material, silicon nitride (Si 3
N 4 ), boron nitride (BN), zirconium boride (ZrB
2 ), aluminum nitride (AlN), zirconium oxide (zirconia: ZrO 2 ), zircon (Zr (Si
O 4 )), or silicon nitride with boron nitride at 20 wt% to 30%
Wt% content (Si 3 N 4 -30wt% BN)
Etc., and refractory materials such as wax stone bricks, chamotte bricks, high alumina bricks, and zircon bricks. Further, as described above, the pair of long side weirs, the pair of short side weirs, and the spacer weir may be provided with heating means such as induction heating or electric heater.

【００２７】なお、前記湯溜部内に注湯される溶融金属
の温度（Ｔ）は、溶融金属の融点（ｍ．ｐ．）をＴm と
したとき、（Ｔm ＋５０）℃≦Ｔ≦（Ｔm ＋１００）℃
の範囲内に保持されるのが好ましい。溶融金属の温度が
（Ｔm ＋５０）℃未満では、湯溜部内の溶融金属が、凝
固し易くなって、湯面下凝固させることが困難となる傾
向が現れ出す一方、溶融金属の温度が（Ｔm ＋１００）
℃を越えると、湯溜部内の溶融金属の温度を維持するた
めの、ランニングコストが増大する傾向が現れ出すから
である。The temperature (T) of the molten metal poured into the molten metal reservoir is (T m +50) ° C. ≦ T ≦ (, where T m is the melting point (mp) of the molten metal. T m +100) ° C
Is preferably maintained within the range. If the temperature of the molten metal is less than (T m +50) ° C., the molten metal in the molten metal pool tends to solidify, and it tends to be difficult to solidify below the molten metal surface. T m +100)
This is because if the temperature exceeds ℃, the running cost for maintaining the temperature of the molten metal in the molten metal pool tends to increase.

【００２８】また、前記鋳型の内面（詳述すると、前記
一対の長辺堰の内面、又は前記一対の短辺堰の内面、若
しくは前記スペーサー堰の前記短辺堰、又は相対する他
の前記スペーサー堰との対向面をいう）は、相対する前
記内面同士の間隙（詳述すると、前記一対の長辺堰の間
隙、又は前記一対の短辺堰の間隙、若しくは前記スペー
サー堰と前記短辺堰、又は他の前記スペーサー堰との間
隙をいう）を、それぞれ前記鋳型の上から下に向かって
拡大する、テーパー面とされるのが好ましい。従来のよ
うに、前記鋳型の内面に、溶融金属又は溶融金属中の凝
固核等が固着して、拘束性ＢＯ等が発生するのを極力抑
制することができるからである。なお、前記内面とは、
溶融金属と相対する面をいい、また、前記形容詞である
「上」とは、鋳型の上端だけでなく、鋳型の高さ方向の
中間をもいう。The inner surface of the mold (specifically, the inner surfaces of the pair of long side weirs, the inner surface of the pair of short side weirs, the short side weir of the spacer weir, or the other spacers facing each other. The facing surface facing the weir means a gap between the inner surfaces facing each other (specifically, a gap between the pair of long side weirs, a gap between the pair of short side weirs, or the spacer weir and the short side weir). , Or another gap with the spacer weir) is preferably a tapered surface that expands from the top to the bottom of the mold. This is because it is possible to suppress the generation of restraining BO and the like as much as possible in the conventional manner, by fixing the molten metal or solidification nuclei in the molten metal to the inner surface of the mold. The inner surface means
It means a surface facing the molten metal, and the adjective “upper” means not only the upper end of the mold but also the middle of the mold in the height direction.

【００２９】なお、前記テーパー面の、下記（１）式で
求められるテーパー比（α）としては、０．３％≦α≦
２％、好適には０．３％≦α≦１．５％とされるのが好
ましい。前記テーパー面のテーパー比が、０．３％（又
は０．３／１００、或いは、図２中、τで示す傾斜角度
が約０．１７２°）未満では、前記テーパー面に接触し
た溶融金属等を、自然剥離させることが困難となる傾向
が現れ出すからである。また、前記テーパー面のテーパ
ー比が１．５％（又は１．５／１００、或いは、図２
中、τで示す傾斜角度が約０．８５９°という）を越え
ると、鋳型の上端で形成される溶融金属注湯口が狭くな
って、溶融金属の注湯が困難となったり、或いは溶融金
属中に巻き込まれた不純物等を、湯面に浮遊させる（又
は湯面保護材中に含有させる）ことが困難となる傾向が
現れ出し、特に２％（又は２／１００、或いは、図２
中、τで示す傾斜角度が約１．１４６°）を越えるとそ
の傾向が著しくなるからである。The taper ratio (α) of the tapered surface obtained by the following equation (1) is 0.3% ≦ α ≦
2%, preferably 0.3% ≤ α ≤ 1.5%. When the taper ratio of the tapered surface is less than 0.3% (or 0.3 / 100, or the inclination angle indicated by τ in FIG. 2 is about 0.172 °), the molten metal or the like in contact with the tapered surface This is because there is a tendency that it becomes difficult to spontaneously exfoliate. Further, the taper ratio of the tapered surface is 1.5% (or 1.5 / 100, or as shown in FIG.
When the inclination angle indicated by τ exceeds 0.859 °), the molten metal pouring port formed at the upper end of the mold becomes narrow, making it difficult to pour molten metal, or Impurities and the like trapped in the molten metal tend to be difficult to float on the molten metal surface (or to be contained in the molten metal surface protection material), especially 2% (or 2/100, or FIG. 2).
This is because the tendency becomes remarkable when the inclination angle indicated by τ exceeds about 1.146 °.

【００３０】なお、テーパー比（α）は、下記（１）式
で求められる（図２参照）。 α＝（ｂ1 −ｂ2 ）／ｈ×１００ ・・・・・・・・・（１） 但し、α：一対の長辺堰１２ａの内面のテーパー比
（％） ｈ：一対の長辺堰１２ａの内面の高さ（ｍ） ｂ1 ：一対の長辺堰１２ａの上端の幅（ｍ） ｂ2 ：一対の長辺堰１２ａの下端の幅（ｍ） また、一対の短辺堰の内面、又はスペーサー堰の短辺
堰、若しくは相対する他のスペーサー堰との対向面のテ
ーパー比も、前記（１）式と同様に求められる。The taper ratio (α) is calculated by the following equation (1) (see FIG. 2). α = (b 1 −b 2 ) / h × 100 (1) where α: taper ratio (%) of the inner surface of the pair of long side weirs 12 a h: pair of long side weirs the inner surface of the height of 12a (m) b 1: width of the upper end of the pair of long sides weir 12a (m) b 2: the width of the lower ends of the pair of long sides weir 12a (m), the inner surface of the pair of short sides weir , Or the short side weir of the spacer weir, or the taper ratio of the facing surface of the spacer weir facing the other spacer weir, is calculated in the same manner as in the above formula (1).

【００３１】また、前記一対の短辺堰を、前記一対の長
辺堰の側線方向（又は中心軸方向という）に沿って進退
させる進退手段としては、ステッピングシリンダー（又
は多位置型シリンダー若しくはサーボシリンダーとい
う）等の油圧シリンダー又はエアシリンダー等の直線駆
動手段が挙げられる。特に、ステッピングシリンダーを
用いると、前記一対の短辺堰の、前記一対の長辺堰の側
線方向に沿った、進退動作の微調整を行うことができ
る。なお、前記直線駆動手段とは、ロッド部等の伝達駆
動部が一方向に直線状に駆動されるものをいう。As the advancing / retreating means for advancing / retreating the pair of short side weirs along the lateral direction (or central axis direction) of the pair of long side weirs, a stepping cylinder (or a multi-position cylinder or a servo cylinder) is used. Linear driving means such as a hydraulic cylinder or an air cylinder. In particular, by using a stepping cylinder, it is possible to finely adjust the forward / backward movement of the pair of short side weirs along the lateral direction of the pair of long side weirs. The linear drive means means that a transmission drive unit such as a rod unit is linearly driven in one direction.

【００３２】また、前記直線駆動手段は、一対の短辺堰
の外面の上部、及び、下部にそれぞれ設けられるのが好
ましい。例えば、前記直線駆動手段を、一対の短辺堰の
外面中央部に、それぞれ一つずつ設けた場合、この直線
駆動手段として、前述した湯面下凝固させるための、前
記所定の距離（Ｈ）を持って、前記湯溜部内に貯留され
た、溶融金属の静圧を受けるに必要な大許容トルクを有
するものが必要なために、場合によっては、前記直線駆
動手段を新規設計の必要がある等、設備費が高騰する虞
れがある一方、前記大許容トルクを有する直線駆動手段
を準備できなかった場合には、前記静圧を小さくせざる
をえないために、前記湯溜部内の溶融金属の貯留量を減
少させねばならないので、前記湯面下凝固をさせること
ができなくなって、従来のように、薄板の表面性状が悪
化する虞れがあるからである。Further, it is preferable that the linear driving means is provided on the upper and lower portions of the outer surface of the pair of short side dams, respectively. For example, when one linear driving means is provided in each of the central portions of the outer surfaces of the pair of short side dams, the predetermined distance (H) for the above-mentioned underwater surface solidification is used as the linear driving means. Therefore, since it is necessary to have a large allowable torque stored in the molten metal pool to receive the static pressure of the molten metal, it may be necessary to newly design the linear drive means in some cases. On the other hand, there is a risk that equipment costs will rise, but when the linear drive means having the large allowable torque cannot be prepared, the static pressure has to be reduced, so that the melting in the hot water reservoir is required. This is because the amount of metal to be stored must be reduced, so that the above-mentioned under-surface solidification cannot be performed and the surface quality of the thin plate may deteriorate as in the conventional case.

【００３３】また、前記進退手段を有する薄板連続鋳造
方法において、板幅を変更する方法としては、一対の
短辺堰の下部又は上部を、一対の長辺堰の側線方向に沿
って、所定量移動した（第１傾斜動工程）後、一対の短
辺堰の上部又は下部を、一対の長辺堰の側線方向に沿っ
て、所定量移動する（第２傾斜動工程）方法や、一対
の短辺堰の下部又は上部を、一対の長辺堰の側線方向に
沿って、所定量移動した（第１傾斜動工程）後、その状
態で所定量平行移動し（平行移動工程）、その後、一対
の短辺堰の上部又は下部を、一対の長辺堰の側線方向に
沿って、所定量移動する（第２傾斜動工程）方法等が挙
げられる。Further, in the thin plate continuous casting method having the advancing / retreating means, as a method of changing the plate width, the lower part or the upper part of the pair of short side weirs is moved by a predetermined amount along the lateral direction of the pair of long side weirs. After the movement (first tilting motion step), the upper or lower part of the pair of short-side dams is moved by a predetermined amount along the lateral direction of the pair of long-side dams (second tilt motion process), or The lower part or the upper part of the short-side weir is moved along the lateral direction of the pair of long-side weirs by a predetermined amount (first tilting step), and then translated by a predetermined amount in that state (parallel moving step), Examples include a method of moving the upper portion or the lower portion of the pair of short side weirs by a predetermined amount along the lateral direction of the pair of long side weirs (second tilting step).

【００３４】なお、前記の薄板連続鋳造方法における
板幅変更において、前記第１傾斜動工程、及び、前記第
２傾斜動工程を、順次実施した後、前記第１傾斜動工程
を実施したり、又は、前記第１傾斜動工程、及び、前記
第２傾斜動工程を、順次実施した後、前記第１傾斜動工
程、及び、前記第２傾斜動工程を、順次実施する等して
もよい。また、前記の薄板連続鋳造方法における板幅
変更においても、前記と同様に、前記第１傾斜動工程、
平行移動工程、及び、前記第２傾斜動工程を、順次実施
した後、前記第１傾斜動工程、平行移動工程、及び、前
記第２傾斜動工程を、順次実施する等してもよい。In the plate width change in the above-described thin plate continuous casting method, the first tilting step and the second tilting step are sequentially carried out, and then the first tilting step is carried out. Alternatively, the first tilting step and the second tilting step may be sequentially performed, and then the first tilting step and the second tilting step may be sequentially performed. Further, also in the plate width change in the thin plate continuous casting method, as in the above, the first tilting step,
The parallel moving step and the second tilting step may be sequentially performed, and then the first tilting step, the parallel moving step, and the second tilting step may be sequentially performed.

【００３５】例えば、一対の短辺堰の総移動量を同じに
した場合、前記、の薄板連続鋳造方法における板幅
変更において、前記第１傾斜動工程等を繰り返すことに
より、各工程の一対の短辺堰の移動量を、小さくするこ
とができるので、後述のエアーギャップ等の発生を確実
に防止することができる。また、前記、の薄板連続
鋳造方法における板幅変更においては、一対の短辺堰を
移動させてもよいし、いずれか一方の短辺堰を移動させ
てもよい。For example, when the total amount of movement of the pair of short-side weirs is the same, when the plate width is changed in the thin plate continuous casting method described above, the first tilting step and the like are repeated so that Since the amount of movement of the short side weir can be reduced, it is possible to reliably prevent the occurrence of air gaps and the like described later. Further, in the plate width change in the thin plate continuous casting method, the pair of short side weirs may be moved, or any one of the short side weirs may be moved.

【００３６】また、前記テーパー面を設けた一対の短辺
堰を用いて、前述した板幅変更を行う場合、後述する前
記一対の短辺堰のテーパー面の、図８、図１２〜図１４
中、λで示す鉛直方向に対する傾斜角度は、約１．１４
６°以下とされるのが好ましい。これは、一対の短辺堰
のテーパー面の傾斜角度（λ）が、約１．１４６°を越
えると、前記と同様に、溶融金属中に巻き込まれた不純
物等を、湯面に浮遊させることが困難となるからであ
る。また、後述する一対の短辺堰のテーパー面の、図
８、図１２〜図１４中、μで示す鉛直方向に対する傾斜
角度は、約０．１７２°以上とされるのが好ましい。こ
れは、一対の短辺堰のテーパー面の傾斜角度（μ）が、
約０．１７２°未満では、一対の短辺堰のテーパー面に
接触した溶融金属等を、自然剥離させることが困難とな
って、拘束性ＢＯ等が発生し易くなるからである。Further, in the case where the above-mentioned plate width is changed by using a pair of short side weirs provided with the above-mentioned tapered surfaces, the taper surfaces of the pair of short side weirs, which will be described later, are shown in FIGS.
The inclination angle with respect to the vertical direction indicated by λ is about 1.14.
It is preferably 6 ° or less. This is because when the inclination angle (λ) of the tapered surfaces of the pair of short side dams exceeds about 1.146 °, the impurities and the like entrained in the molten metal are floated on the molten metal surface as described above. Because it becomes difficult. Further, the inclination angle of the tapered surfaces of the pair of short side dams described later with respect to the vertical direction indicated by μ in FIGS. 8 and 12 to 14 is preferably about 0.172 ° or more. This is because the inclination angle (μ) of the tapered surfaces of the pair of short side dams is
When the angle is less than about 0.172 °, it is difficult to spontaneously separate the molten metal or the like that is in contact with the tapered surfaces of the pair of short-side dams, and the restrictive BO or the like is likely to occur.

【００３７】また、一対の短辺堰のテーパー面を鉛直方
向になるまで傾斜させた状態で平行移動させると、一対
の短辺堰の移動に伴って、湯溜部内に貯留された溶融金
属が激しく揺動するために、従来の如く、薄板の表面性
状が悪化する虞れがあったが、一対の短辺堰のテーパー
面を、前記の如く、傾斜させた状態で平行移動させる
と、前記一対の短辺堰の移動速度等にも依るが、前記溶
融金属を前記テーパー面に沿わせることができ、前記の
ような激しい揺動を防止することができるので、薄板の
表面性状が悪化するのを防止することができる（図１１
（ａ）、（ｂ）参照）。Further, when the tapered surfaces of the pair of short-side weirs are moved in parallel while being inclined to the vertical direction, the molten metal stored in the molten metal pool is moved along with the movement of the pair of short-side weirs. Since it vibrates violently, the surface quality of the thin plate may be deteriorated as in the past. However, when the tapered surfaces of the pair of short side dams are translated in the inclined state as described above, Although it depends on the moving speed of the pair of short-side dams, the molten metal can be made to follow the tapered surface, and the vigorous oscillation as described above can be prevented, so that the surface quality of the thin plate deteriorates. Can be prevented (Fig. 11
(See (a) and (b)).

【００３８】また、本発明の薄板連続鋳造装置、及び、
薄板連続鋳造方法では、ＳＵＳ３０４等のステンレス鋼
や炭素鋼等の鉄鋼や、アルミニウム又はアルミニウム合
金等の薄板を連続鋳造することができる。また、前記薄
板連続鋳造方法によって、薄板の板幅を例えば１ｍから
０．９ｍや０．８ｍ、０．７ｍ、０．６ｍ、０．５ｍ等
に縮小することができる一方、例えば前記０．５ｍ〜
０．９ｍから１ｍ等に拡大することができる。Further, the thin plate continuous casting apparatus of the present invention, and
In the thin plate continuous casting method, stainless steel such as SUS304 or the like, iron or steel such as carbon steel, or thin plate such as aluminum or aluminum alloy can be continuously cast. In addition, by the thin plate continuous casting method, the plate width of the thin plate can be reduced from, for example, 1 m to 0.9 m, 0.8 m, 0.7 m, 0.6 m, 0.5 m, etc. ~
It can be expanded from 0.9m to 1m.

【００３９】[0039]

【作用】請求項１〜７記載の薄板連続鋳造装置において
は、一対の鋳造ロールの上方に近接配置される鋳型を備
えたことにより、上方から注湯される溶融金属を、湯面
下凝固させるための湯溜部を形成することができるの
で、たとえ、湯溜部内に注湯された溶融金属が、高速で
回転する一対の鋳造ロールや、次々に注湯される溶融金
属によって揺動されても、凝固シェル中に湯面保護材
や、スカム等の不純物等が、巻き込まれるのを防止する
ことができる（換言すると、溶融金属が湯面下凝固され
ているので、たとえ、溶融金属中に、湯面保護材やスカ
ム等の不純物等が巻き込まれても、これら湯面保護材等
が、凝固シェル中に巻き込まれる以前に、湯面上に浮遊
することができる）。従って、薄板の表面に鮫肌等が、
発生するのを防止することができ、良好な表面性状の薄
板を連続鋳造することができると共に、拘束性ブレイク
アウト等のブレイクアウトを防止することができる。In the thin plate continuous casting apparatus according to any one of claims 1 to 7, since the casting mold is provided close to above the pair of casting rolls, the molten metal poured from above is solidified below the molten metal surface. Since it is possible to form a molten metal pool for the molten metal, even if the molten metal poured into the molten metal pool is swung by a pair of casting rolls rotating at high speed and molten metal poured one after another. Also, it is possible to prevent impurities such as scum etc. from being caught in the molten metal in the solidified shell (in other words, since the molten metal is solidified below the molten metal surface, , Even when impurities such as the surface protection material and scum are caught, these surface protection materials and the like can float on the surface of the molten metal before they are caught in the solidified shell). Therefore, shark skin etc. on the surface of the thin plate,
It is possible to prevent this from occurring, to continuously cast a thin plate having good surface properties, and to prevent breakout such as restraint breakout.

【００４０】特に、請求項２記載の薄板連続鋳造装置に
おいては、鋳型内に少なくとも１以上のスペーサー堰を
備えたことにより、目的幅の薄板を多条連続鋳造するこ
とができると共に、従来のスリッタ等による薄板の切断
工程を省略、或いは、薄板のトリミング量を減少するこ
とができる。また、切断工程を省略することができるの
で、従来、薄板の切断面に発生していた、バリや耳波等
の発生を防止することができ、後工程でのバリ除去作業
等を省略することができ、従って、薄板連続鋳造の操業
性の効率や製品歩留りを向上させることができる。Particularly, in the thin plate continuous casting apparatus according to the second aspect, since at least one spacer weir is provided in the mold, a thin plate having a target width can be continuously cast in multiple strips and a conventional slitter. It is possible to omit the step of cutting the thin plate by, for example, or reduce the trimming amount of the thin plate. Further, since the cutting step can be omitted, it is possible to prevent the generation of burrs, ear waves, etc., which have been conventionally generated on the cut surface of the thin plate, and to omit the burr removal work in the subsequent step. Therefore, it is possible to improve the efficiency of workability of continuous casting of thin plates and the product yield.

【００４１】特に、請求項３記載の薄板連続鋳造装置に
おいては、一対の長辺堰の内面や、一対の短辺堰の内
面、さらにスペーサー堰の一対の短辺堰との対向面、又
は相対する他のスペーサー堰との対向面を、テーパー面
としたことにより、一対の長辺堰の内面や、一対の短辺
堰の内面、さらにスペーサー堰の一対の短辺堰、又は相
対する他のスペーサー堰との対向面に、凝固核（又は凝
固物）や厚さの薄い、いわゆる初期凝固シェルが付着し
て生長する（又は拘束される）のを極力防止することが
でき、たとえ、凝固核や厚さの薄い初期凝固シェルが、
前記内面に付着しても、その自重や薄板の引抜きに伴っ
て、剥離させることができる。従って、薄板の表面に鮫
肌等が発生したり、薄板の板厚が不均一になったりする
のを防止することができ、良好な表面性状の薄板を連続
鋳造することができると共に、拘束性ブレイクアウト等
を防止することができる。In particular, in the thin plate continuous casting apparatus according to the third aspect, the inner surfaces of the pair of long side weirs, the inner surfaces of the pair of short side weirs, and the facing surface of the spacer weir with the pair of short side weirs, or the relative surface. By making the surface facing the other spacer weir a tapered surface, the inner surfaces of the pair of long side weirs, the inner surfaces of the pair of short side weirs, the pair of short side weirs of the spacer weir, or other facing It is possible to prevent the coagulation nuclei (or coagulation products) and thin so-called initial coagulation shells from adhering to and growing (or being restrained) on the surface facing the spacer weir as much as possible. The initial solidified shell with a small thickness is
Even if it adheres to the inner surface, it can be peeled off due to its own weight or withdrawal of the thin plate. Therefore, it is possible to prevent sharkskin and the like from occurring on the surface of the thin plate, and to prevent the plate thickness of the thin plate from becoming uneven, and it is possible to continuously cast a thin plate with good surface properties and to restrain the breakage. It is possible to prevent out.

【００４２】特に、請求項４記載の薄板連続鋳造装置に
おいては、一対の長辺堰の内面や、一対の短辺堰の内
面、さらにスペーサー堰の短辺堰との対向面、又は相対
する他のスペーサー堰との対向面の、テーパー比（α）
を、それぞれ０．３％≦α≦２％の範囲内としたことに
より、たとえ、一対の長辺堰の内面や、一対の短辺堰の
内面、さらにスペーサー堰の一対の短辺堰、又は相対す
る他のスペーサー堰との対向面に、凝固核や厚さの薄い
初期凝固シェルが付着生長しても、これらをその自重や
薄板の引抜きに伴って、剥離させることができると共
に、溶融金属中に巻き込まれた不純物等を、容易に湯面
に浮遊させることができるために、薄板の表面に鮫肌等
が発生するのを防止することができ、良好な表面性状の
薄板を連続鋳造することができると共に、拘束性ブレイ
クアウト等を防止することができる。In particular, in the thin plate continuous casting apparatus according to the fourth aspect, the inner surfaces of the pair of long side weirs, the inner surfaces of the pair of short side weirs, the facing surface of the spacer weir with the short side weirs, or the other surfaces facing each other. Taper ratio (α) of the surface facing the spacer weir
Within 0.3% ≦ α ≦ 2%, for example, the inner surfaces of the pair of long side weirs, the inner surfaces of the pair of short side weirs, and the pair of short side weirs of the spacer weir, or Even if solidification nuclei or thin solidified initial solidification shells adhere to the surface facing other spacer weirs, they can be peeled off due to their own weight or withdrawal of the thin plate, and molten metal Impurities trapped inside can be easily floated on the surface of the molten metal, so that it is possible to prevent shark's skin from occurring on the surface of the thin plate, and to continuously cast thin plates with good surface properties. In addition, it is possible to prevent restraint breakout and the like.

【００４３】特に、請求項５、６記載の薄板連続鋳造装
置においては、一対の短辺堰に、該一対の短辺堰を、一
対の長辺堰の側線方向に沿って、進退する進退手段を備
えたことにより、連続鋳造操業中、薄板の板幅を変更す
ることができ、目的幅の薄板を連続鋳造することができ
ると共に、従来のスリッタ等による切断工程を省略、或
いは薄板のトリミング量を減少することができる。この
結果、前記と同様に、従来、薄板の切断面に発生してい
た、バリや耳波等の発生を防止することができるので、
後工程でのバリ除去作業等を省略することができ、従っ
て、薄板連続鋳造の操業性の効率や製品歩留りを向上さ
せることができる。Particularly, in the thin plate continuous casting apparatus according to the fifth and sixth aspects, the advancing / retreating means for advancing / retreating the pair of short side weirs along the lateral direction of the pair of long side weirs. Since it is possible to change the plate width of the thin plate during the continuous casting operation, it is possible to continuously cast the thin plate of the target width, and the cutting process by the conventional slitter etc. is omitted, or the trimming amount of the thin plate is provided. Can be reduced. As a result, similarly to the above, since it is possible to prevent the occurrence of burrs, ear waves, etc., which have been conventionally generated in the cut surface of the thin plate,
It is possible to omit the burr removal work and the like in the subsequent process, and therefore it is possible to improve the workability efficiency and product yield of continuous thin plate casting.

【００４４】また、前記一対の短辺堰に前記テーパー面
を形成したときは、特に、一対の短辺堰を、一対の長辺
堰の側線方向に沿って、板幅を縮小する方向に進退させ
たとき、湯溜部内に貯留された溶融金属が、一対の短辺
堰の進退によって揺動するのを防止することができるの
で、前記と同様に、薄板の表面性状が悪化するのを防止
することができる。When the tapered surfaces are formed on the pair of short-side weirs, the pair of short-side weirs are advanced and retracted along the lateral direction of the pair of long-side weirs in the direction of reducing the plate width. When this is done, it is possible to prevent the molten metal stored in the molten metal pool from swinging due to the advancing / retreating of the pair of short side weirs. can do.

【００４５】特に、請求項６記載の薄板連続鋳造装置に
おいては、一対の短辺堰の外面の上部、及び、下部に、
それぞれ直線駆動手段を設けたことにより、一対の短辺
堰を、一対の長辺堰の側線方向に沿って、進退させると
き、前述したように、湯溜部内に貯留された、溶融金属
の静圧を受けるに必要な、大許容トルクを有する直線駆
動手段を、準備する必要等を省略して、設備費の高騰化
を防止することができると共に、湯面下凝固をさせるた
めに必要な溶融金属を、湯溜部内に貯留することができ
るので、前記と同様に、薄板の表面性状の悪化を防止す
ることができる。Particularly, in the thin plate continuous casting apparatus according to the sixth aspect, the upper and lower portions of the outer surface of the pair of short side dams are
When the pair of short side weirs are moved back and forth along the lateral direction of the pair of long side weirs by providing the linear driving means, respectively, as described above, the static molten metal stored in the molten metal pool It is possible to prevent an increase in equipment costs by omitting the need to prepare a linear drive means having a large allowable torque required to receive pressure, and to melt the molten steel necessary for under-surface solidification. Since the metal can be stored in the hot water reservoir, it is possible to prevent the surface quality of the thin plate from deteriorating, as described above.

【００４６】また、前記一対の直線駆動手段を操作して
薄板の板幅を変更する場合、前記一対の短辺堰のテーパ
ー面を、鉛直方向までしか傾斜させないならば、従来の
ように、前記テーパー面に、溶融金属又は溶融金属中の
凝固核等が固着して、拘束性ＢＯ等が発生するのを防止
することができると共に、一対の短辺堰の移動に伴っ
て、湯溜部内に貯留された溶融金属が激しく揺動して、
薄板の表面性状が悪化するのを防止することができる。When the pair of linear driving means is operated to change the plate width of the thin plate, if the taper surfaces of the pair of short side dams are inclined only up to the vertical direction, as in the conventional case, It is possible to prevent the molten metal or solidification nuclei in the molten metal from sticking to the tapered surface to generate restraining BO and the like. The stored molten metal vibrates violently,
It is possible to prevent the surface quality of the thin plate from being deteriorated.

【００４７】特に、請求項７記載の薄板連続鋳造装置に
おいては、一方向に長尺で、かつ、その中心軸方向の所
定部から、両端部に向かって、縮径された縮径部を有す
る、ロール胴体部の前記縮径部に、少なくとも前記ロー
ル胴体部の、外周面の材質に比べ低熱伝導性の材料を、
前記ロール胴体部の縮径部を除く部位と、同径状に被膜
したことにより、一対の鋳造ロールによる、抜熱速度
（又は抜熱量という）を、一対の鋳造ロールの、中心軸
方向に沿って、略均一とすることができるので、従来の
ように、薄板の中央部が凹むのを防止することができ、
前記薄板の板厚を板幅方向に沿って、均一にすることが
できる。Particularly, in the thin plate continuous casting device according to the seventh aspect, the thin plate continuous casting device has a reduced diameter portion which is elongated in one direction and which is reduced in diameter from a predetermined portion in the central axis direction toward both ends. In the reduced diameter portion of the roll body portion, at least the roll body portion, a material having a lower thermal conductivity than the material of the outer peripheral surface,
The heat removal rate (or heat removal amount) by the pair of casting rolls, along with the central axis direction of the pair of casting rolls, is obtained by coating the same diameter as the portion of the roll body except the reduced diameter portion. Since it can be made substantially uniform, it is possible to prevent the central portion of the thin plate from being dented as in the conventional case.
The plate thickness of the thin plate can be made uniform along the plate width direction.

【００４８】また、請求項８、９記載の薄板連続鋳造方
法においては、一対の短辺堰の下部又は上部を一対の長
辺堰の側線方向に沿って所定量移動した後、一対の短辺
堰の上部又は下部を一対の長辺堰の側線方向に沿って所
定量移動したので、例えば、一対の短辺堰を鉛直状態で
平行移動させる場合等に比べ、前述したように、湯溜部
内の溶融金属が激しく揺動するのを防止することができ
るので、従来のように、薄板の表面性状が悪化するのを
防止することができる。In the thin plate continuous casting method according to claim 8 or 9, the lower part or the upper part of the pair of short side weirs is moved by a predetermined amount along the lateral direction of the pair of long side weirs, and then the pair of short side weirs. Since the upper part or the lower part of the weir has been moved by a predetermined amount along the lateral direction of the pair of long side weirs, for example, as described above, as compared with the case where the pair of short side weirs are moved in parallel in the vertical direction, Since it is possible to prevent the molten metal of (1) to vibrate violently, it is possible to prevent the surface properties of the thin plate from being deteriorated as in the conventional case.

【００４９】特に、請求項９記載の薄板連続鋳造方法に
おいては、一対の短辺堰の下部又は上部を一対の長辺堰
の側線方向に沿って所定量移動し、その状態から所定量
平行移動した後、一対の短辺堰の上部又は下部を一対の
長辺堰の側線方向に沿って所定量移動することにより、
例えば、溶融金属の湯面と、一対の鋳造ロールの外周面
の接点で生成された、極めて軟弱な初期凝固シェルにか
かる負荷を、極めて低くした板幅変更を行うことがで
き、この結果、凝固シェルの割れ等の発生を防止した、
健全な生成を行うことができる。また、一対の鋳造ロー
ルの外周面に沿って、次第に、その厚さを増す凝固シェ
ルに、無理な応力（換言すると凝固シェルに割れを生じ
させせる応力等）をかけずに、板幅変更を行うことがで
きるので、連続鋳造された薄板の内部に割れ等が発生す
るのを防止することができ、この結果、高速の板幅変更
を可能とすることができる。Particularly, in the thin plate continuous casting method according to the ninth aspect, the lower part or the upper part of the pair of short-side weirs is moved by a predetermined amount along the lateral direction of the pair of long-side weirs, and from that state, a predetermined amount is translated. After that, by moving the upper part or the lower part of the pair of short side weirs by a predetermined amount along the lateral direction of the pair of long side weirs,
For example, the load applied to the extremely soft initial solidification shell, which is generated at the contact point between the molten metal surface and the outer peripheral surfaces of the pair of casting rolls, can be changed to an extremely low plate width, resulting in solidification. Prevents the occurrence of shell cracks,
Can perform sound generation. Also, along the outer peripheral surface of the pair of casting rolls, the plate width can be changed without applying excessive stress (in other words, stress that causes cracks in the solidified shell) to the solidified shell whose thickness gradually increases. Since it can be performed, it is possible to prevent cracks and the like from occurring inside the continuously cast thin plate, and as a result, it is possible to change the plate width at high speed.

【００５０】[0050]

【発明の効果】請求項１〜７記載の薄板連続鋳造装置に
おいては、一対の鋳造ロールの上方に近接配置される鋳
型を備えたので、湯溜部内に注湯された溶融金属を、湯
面下凝固させることができ、従来のように、湯面保護材
やスカム等の不純物等が、凝固シェル中に巻き込まれ
て、薄板の表面に鮫肌等が発生するのを防止することが
できる。これにより、均一な板厚を有する薄板を、連続
鋳造することができるので、従来のように、不均一な薄
板が巻装されたコイルを、そのまま廃棄すること等を、
極力抑制することができ、さらに、連続鋳造された薄板
の端部の、トリミング量等も減少することができるの
で、薄板の歩留りを向上することができる。さらに、良
好な表面性状の薄板を、連続鋳造することができるの
で、従来のように、拘束性ブレイクアウト等が発生する
のを防止することができる。従って、表面性状に優れた
均一な板厚、及び、均質な組織を有する薄板を、連続鋳
造することができる作業性や生産性、量産性、信頼性に
優れた薄板連続鋳造装置を実現することができるもので
ある。In the thin plate continuous casting apparatus according to the first to seventh aspects of the present invention, since the casting mold is provided in the vicinity of the upper part of the pair of casting rolls, the molten metal poured into the pool part is It is possible to lower-solidify, and it is possible to prevent the generation of shark skin or the like on the surface of the thin plate, which is caused by impurities such as the surface protection material and scum being caught in the solidified shell as in the conventional case. As a result, since a thin plate having a uniform plate thickness can be continuously cast, it is possible to discard a coil wound with a non-uniform thin plate as it is, as in the conventional case.
This can be suppressed as much as possible, and the trimming amount or the like of the end portion of the continuously cast thin plate can be reduced, so that the yield of the thin plate can be improved. Further, since a thin plate having good surface properties can be continuously cast, it is possible to prevent the occurrence of restraint breakout and the like as in the conventional case. Therefore, it is possible to realize a thin plate continuous casting apparatus capable of continuously casting a thin plate having a uniform surface thickness and a uniform structure and having excellent workability, productivity, mass productivity, and reliability. Is something that can be done.

【００５１】特に、請求項２記載の薄板連続鋳造装置に
おいては、鋳型内に少なくとも１以上のスペーサー堰を
備えたので、目的とする板幅を有する、又は、薄板端部
のトリミング量の少ない、良好なエッジ形状の薄板を多
条連続鋳造することができる。従って、鮫肌や凹み等の
発生を極力抑制することができ、表面性状に優れた薄板
を連続鋳造することができると共に、一度の連続鋳造操
業の際に、多条の薄板を連続鋳造することができる。In particular, in the thin plate continuous casting apparatus according to the second aspect, since at least one spacer weir is provided in the mold, the plate has a desired plate width, or the trimming amount of the thin plate end is small. A thin plate having a good edge shape can be continuously cast in multiple lines. Therefore, it is possible to suppress the occurrence of shark skin, dents, etc. as much as possible, and it is possible to continuously cast thin plates with excellent surface properties, and it is possible to continuously cast multiple strips during one continuous casting operation. it can.

【００５２】特に、請求項３記載の薄板連続鋳造装置に
おいては、一対の長辺堰の内面や、一対の短辺堰の内
面、さらにスペーサー堰の一対の短辺堰との対向面、又
は相対する他のスペーサー堰との対向面を、テーパー面
としたので、鮫肌や凹み、耳波等の発生を極力抑制する
ことができ、表面性状に優れた薄板を連続鋳造すること
ができる。Particularly, in the thin plate continuous casting apparatus according to the third aspect, the inner surfaces of the pair of long-side weirs, the inner surfaces of the pair of short-side weirs, the facing surfaces of the spacer weirs and the pair of short-side weirs, or the relative surfaces. Since the surface facing the other spacer weir is a tapered surface, it is possible to suppress the generation of shark skin, dents, and ear waves as much as possible, and it is possible to continuously cast a thin plate having excellent surface properties.

【００５３】特に、請求項４記載の薄板連続鋳造装置に
おいては、一対の長辺堰の内面や、一対の短辺堰の内
面、さらにスペーサー堰の短辺堰との対向面、又は相対
する他のスペーサー堰との対向面のテーパー比（α）
を、それぞれ０．３％≦α≦２％の範囲内としたので、
鮫肌や凹み、耳波等の発生を極力抑制することができ、
表面性状に優れた薄板を連続鋳造することができる。In particular, in the thin plate continuous casting apparatus according to the fourth aspect, the inner surfaces of the pair of long side weirs, the inner surfaces of the pair of short side weirs, the facing surface of the spacer weir with the short side weir, or the other surface facing each other. Taper ratio of the surface facing the spacer weir (α)
Respectively within 0.3% ≦ α ≦ 2%,
It is possible to suppress the generation of shark skin, dents, and ear waves as much as possible,
A thin plate having excellent surface properties can be continuously cast.

【００５４】特に、請求項５記載の薄板連続鋳造装置に
おいては、一対の短辺堰に、一対の短辺堰を一対の長辺
堰の側線方向に沿って、進退する進退手段を備えたの
で、目的とする板幅を有すると共に、薄板の端部のトリ
ミング量の少ない、良好なエッジ形状を有する薄板を、
多条連続鋳造することができる。Particularly, in the thin plate continuous casting apparatus according to the fifth aspect, since the pair of short side weirs is provided with the advancing and retracting means for advancing and retracting the pair of short side weirs along the lateral direction of the pair of long side weirs. , A thin plate having a desired plate width, a small amount of trimming at the end of the thin plate, and a good edge shape,
Multi-strand continuous casting is possible.

【００５５】特に、請求項６記載の薄板連続鋳造装置に
おいては、一対の短辺堰の外面の上部及び下部にそれぞ
れ進退手段を設けたので、鮫肌や凹み、耳波等の発生を
極力抑制することができ、表面性状に優れた薄板を連続
鋳造することができる。In particular, in the thin plate continuous casting apparatus according to the sixth aspect, since the advancing and retracting means are provided on the upper and lower portions of the outer surface of the pair of short side weirs, the generation of shark skin, dents, and ear waves is suppressed as much as possible. It is possible to continuously cast thin plates having excellent surface properties.

【００５６】特に、請求項７記載の薄板連続鋳造装置に
おいては、一対の鋳造ロールの外周面の温度を、その中
心軸方向に沿って略均一とすることができるので、従来
のように、薄板の中央部が凹むのを防止することがで
き、前記薄板の板厚を均一にすることができ、表面性状
に優れた薄板を連続鋳造することができる。Particularly, in the thin plate continuous casting apparatus according to the seventh aspect, the temperature of the outer peripheral surfaces of the pair of casting rolls can be made substantially uniform along the central axis direction thereof. It is possible to prevent the central portion of the plate from being dented, make the plate thickness of the thin plate uniform, and continuously cast thin plates having excellent surface properties.

【００５７】また、請求項８、９記載の薄板連続鋳造方
法においては、一対の短辺堰の下部又は上部を、一対の
長辺堰の側線方向に沿って、所定量移動した後、一対の
短辺堰の上部又は下部を、一対の長辺堰の側線方向に沿
って、所定量移動したので、湯溜部内の溶融金属が激し
く揺動するのを防止することができ、鮫肌等の発生を極
力抑制し、表面性状に優れた薄板を高い生産性や量産性
で連続鋳造することができる。Further, in the thin plate continuous casting method according to claim 8 or 9, after moving a lower portion or an upper portion of the pair of short side weirs by a predetermined amount along the lateral line direction of the pair of long side weirs, Since the upper part or the lower part of the short-side weir has moved by a predetermined amount along the lateral direction of the pair of long-side weirs, it is possible to prevent the molten metal in the basin from violently oscillating, and the occurrence of shark skin etc. It is possible to continuously cast thin plates having excellent surface properties with high productivity and mass productivity.

【００５８】特に、請求項９記載の薄板連続鋳造方法に
おいては、一対の短辺堰の下部又は上部を、一対の長辺
堰の側線方向に沿って、所定量移動した状態で、所定量
平行移動した後、一対の短辺堰の上部又は下部を、一対
の長辺堰の側線方向に沿って、所定量移動するので、板
幅の変更量を、一対の短辺堰の平行移動量によって容易
に変更することができる。Particularly, in the thin plate continuous casting method according to the ninth aspect, the lower part or the upper part of the pair of short-side weirs is moved by a predetermined amount along the lateral direction of the pair of long-side weirs, and is parallel by a predetermined amount. After the movement, the upper part or the lower part of the pair of short-side weirs is moved by a predetermined amount along the lateral direction of the pair of long-side weirs. It can be changed easily.

【００５９】[0059]

【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態につき説明し、本発
明の理解に供する。なお、各実施の形態において同様の
構成のものについては同一の符号を付して説明を省略す
る。BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. In each of the embodiments, the same components are denoted by the same reference numerals, and description thereof is omitted.

【００６０】ここに、図１は本発明の第１の実施の形態
に係る薄板連続鋳造装置の要部斜視図、図２は同薄板連
続鋳造装置の要部側断面図、図３は同薄板連続鋳造装置
を用いた薄板連続鋳造方法における湯溜部内の溶融金属
の湯面から凝固開始位置までの距離（Ｈ）と連続鋳造さ
れる薄板のスカム疵の発生指数の関係を示す特性図、図
４は本発明の第２の実施の形態に係る薄板連続鋳造装置
の要部斜視図、図５は同薄板連続鋳造装置の要部側面
図、図６は本発明の第３の実施の形態に係る薄板連続鋳
造装置の要部斜視図、図７は本発明の第４の実施の形態
に係る薄板連続鋳造装置の説明図、図８は同薄板連続鋳
造装置を用いた薄板連続鋳造方法の説明図、図９は同薄
板連続鋳造装置を用いた他の薄板連続鋳造方法の説明
図、図１０は同薄板連続鋳造装置を用いた薄板連続鋳造
方法における一対の短辺堰の移動速度と連続鋳造される
薄板のスカム疵の発生指数の関係を示す特性図、図１１
は同薄板連続鋳造装置を用いた薄板連続鋳造方法と、従
来の実施の形態に係る薄板連続鋳造装置を用いた薄板連
続鋳造方法との比較図、図１２〜図１４は本発明の第４
の実施の形態に係る薄板連続鋳造装置を用いた他の薄板
連続鋳造方法の説明図、図１５は本発明の第５の実施の
形態に係る薄板連続鋳造装置の一対の鋳造ロールの要部
断面図、図１６は同薄板連続鋳造装置及び従来の実施の
形態に係る薄板連続鋳造装置を用いた薄板連続鋳造方法
の連続鋳造操業時における溶融金属の一対の鋳造ロール
の側線方向に沿った抜熱変化量を示す特性図である。Here, FIG. 1 is a perspective view of an essential part of a thin plate continuous casting apparatus according to a first embodiment of the present invention, FIG. 2 is a side sectional view of an essential part of the thin plate continuous casting apparatus, and FIG. 3 is the same thin plate. A characteristic diagram showing a relationship between a distance (H) from a molten metal surface in a molten metal pool to a solidification start position in a thin plate continuous casting method using a continuous casting device and a scum defect occurrence index of a continuously cast thin plate, 4 is a perspective view of an essential part of a thin plate continuous casting apparatus according to a second embodiment of the present invention, FIG. 5 is a side view of an essential part of the thin plate continuous casting apparatus, and FIG. 6 is a third embodiment of the present invention. FIG. 7 is a perspective view of a main part of such a thin plate continuous casting apparatus, FIG. 7 is an explanatory view of a thin plate continuous casting apparatus according to a fourth embodiment of the present invention, and FIG. 8 is a description of a thin plate continuous casting method using the same thin plate continuous casting apparatus. FIG. 9 is an explanatory view of another thin plate continuous casting method using the same thin plate continuous casting apparatus, and FIG. 10 is the same thin plate continuous casting method. Characteristic diagram showing the relationship between the generation index of scum flaw of the thin plate that is continuously cast with a pair of moving speed of the short side weirs in thin continuous casting method using the casting apparatus, Fig. 11
Is a comparative view of a thin plate continuous casting method using the same thin plate continuous casting apparatus and a thin plate continuous casting method using the conventional thin plate continuous casting apparatus, and FIGS. 12 to 14 show a fourth example of the present invention.
Explanatory drawing of another thin plate continuous casting method using the thin plate continuous casting apparatus according to the embodiment of the present invention, and FIG. 15 is a cross-sectional view of essential parts of a pair of casting rolls of the thin plate continuous casting apparatus according to the fifth embodiment of the present invention. FIGS. 16A and 16B show heat removal along a lateral line direction of a pair of casting rolls of molten metal during continuous casting operation of the thin plate continuous casting method using the same thin plate continuous casting apparatus and the conventional thin plate continuous casting apparatus. It is a characteristic view which shows the amount of change.

【００６１】図１、図２に示すように、本発明の第１の
実施の形態に係る薄板連続鋳造装置１０は、上方から注
湯される溶融金属１４を、凝固させると共に、前記溶融
金属１４が凝固して生成された薄板１５を、下方に引抜
くための、一対の鋳造ロール１１と、一対の鋳造ロール
１１と協働して、前記溶融金属１４を貯留する、湯溜部
１３を形成するための、鋳型１２とを有する。また、鋳
型１２は、一対の長辺堰１２ａと、一対の短辺堰１２ｂ
とで構成されている。以下、これらについて詳しく説明
する。As shown in FIGS. 1 and 2, in a thin plate continuous casting apparatus 10 according to a first embodiment of the present invention, the molten metal 14 poured from above is solidified and the molten metal 14 is melted. A pair of casting rolls 11 for pulling out the thin plate 15 produced by solidifying the molten steel, and a molten metal storage pool 13 for storing the molten metal 14 in cooperation with the pair of casting rolls 11. And a mold 12 for Further, the mold 12 includes a pair of long side weirs 12a and a pair of short side weirs 12b.
It is composed of Hereinafter, these will be described in detail.

【００６２】前記一対の鋳造ロール１１は、それぞれ、
銅又は銅合金等の良好な熱伝導性を有する良熱伝導性材
料で、かつ、断面略真円状の円柱状に形成された、ロー
ル胴体部１１ａの表面に、縦横又は一方向に沿って、複
数の冷却水通水溝１１ｃを形成すると共に、その表面
を、ニッケル又はニッケル合金等の板状材からなるロー
ル表面部１１ｂで覆って、形成されている。また、一対
の鋳造ロール１１の、中心軸方向の両端部には、それぞ
れ、ロール軸（図示せず）が形成されている。The pair of casting rolls 11 are respectively
A good heat conductive material having good heat conductivity, such as copper or copper alloy, and formed in a cylindrical shape having a substantially circular cross section, on the surface of the roll body 11a along the lengthwise direction or one direction. A plurality of cooling water passages 11c are formed, and the surface thereof is covered with a roll surface portion 11b made of a plate-shaped material such as nickel or nickel alloy. Roll shafts (not shown) are formed at both ends of the pair of casting rolls 11 in the central axis direction.

【００６３】そして、前記の如く形成された一対の鋳造
ロール１１は、金属製の支持枠（図示せず）内に回転自
在に軸支されている。また、前記金属製の支持枠の、一
対の鋳造ロール１１を軸支するための軸支部（図示せ
ず）の内、少なくとも一方の鋳造ロール１１を軸支する
ための、一対の軸支部は、一対の鋳造ロール１１の中心
軸方向と、直交方向にスライド可能に形成されている。
これにより、少なくとも一方の鋳造ロール１１を水平方
向に移動可能とすることができ、前記の如く軸支された
一対の鋳造ロール１１は、連続鋳造される薄板１５の板
厚に応じて、適宜所定距離離間されるようになってい
る。The pair of casting rolls 11 formed as described above are rotatably supported in a metal support frame (not shown). Further, of the metal support frame, a pair of shaft supporting portions for supporting at least one casting roll 11 among the shaft supporting portions (not shown) for supporting the pair of casting rolls 11 are: It is formed so as to be slidable in the direction orthogonal to the central axis direction of the pair of casting rolls 11.
Accordingly, at least one of the casting rolls 11 can be moved in the horizontal direction, and the pair of casting rolls 11 axially supported as described above are appropriately determined according to the thickness of the continuously cast thin plate 15. It is designed to be separated by a distance.

【００６４】また、前記の如く配置された一対の鋳造ロ
ール１１は、それぞれ、電気モータ等の回転駆動部（図
示せず）によって、所定回転速度で回転駆動されるよう
になっている。すなわち、一対の鋳造ロール１１の、少
なくとも一方のロール軸に、受動歯車（図示せず）等が
取り付けられると共に、回転駆動部（図示せず）から、
直接又はチェーン等の伝達機構（図示せず）を介して、
回転駆動力が伝達されるようになっている。さらに、一
対の鋳造ロール１１の、冷却水通水溝１１ｃには、ポン
プ等の冷却水供給装置（図示せず）から、冷却水が供給
されるようになっている。The pair of casting rolls 11 arranged as described above are rotatably driven at a predetermined rotation speed by a rotation driving unit (not shown) such as an electric motor. That is, a passive gear (not shown) or the like is attached to at least one roll shaft of the pair of casting rolls 11, and a rotary drive unit (not shown)
Directly or via a transmission mechanism (not shown) such as a chain,
The rotational driving force is transmitted. Further, cooling water is supplied to the cooling water passage 11c of the pair of casting rolls 11 from a cooling water supply device (not shown) such as a pump.

【００６５】一方、前記鋳型１２は、一対の鋳造ロール
１１の上方に、一対の鋳造ロール１１の側線に沿って配
置される、一対の長辺堰１２ａと、一対の鋳造ロール１
１の上方で、かつ、一対の長辺堰１２ａの間に配置され
る、一対の短辺堰１２ｂとを有すると共に、一対の長辺
堰１２ａ、及び、一対の短辺堰１２ｂを、平面視して枠
状に、ボルト・ナット等の締結具（図示せず）、又は溶
接等で、一体化して、形成されている。On the other hand, the mold 12 is arranged above the pair of casting rolls 11 along the lateral lines of the pair of casting rolls 11 and the pair of long side weirs 12a and the pair of casting rolls 1.
1 and a pair of short side weirs 12b arranged between the pair of long side weirs 12a and having a pair of long side weirs 12a and a pair of short side weirs 12b in plan view. Then, it is integrally formed in a frame shape by a fastener (not shown) such as a bolt and a nut, or by welding.

【００６６】なお、前記一対の長辺堰１２ａは、それぞ
れ、窒化硅素（Ｓｉ3 Ｎ4 ）や、窒化硼素（ＢＮ）等
の、良好な断熱性を有する良断熱性材料を主成分とし、
一方向に長尺な直方体状に形成されている。また、一対
の長辺堰１２ａの底面は、それぞれ、一対の鋳造ロール
１１の側周（以下外周面という）上に、近接可能に形成
されている。詳述すると、一対の長辺堰１２ａの底面
は、それぞれ、側面視して、一対の鋳造ロール１１の外
周面の曲率半径と、略同径状の母線を持って凹状に形成
されている。Each of the pair of long side dams 12a contains a good heat insulating material having a good heat insulating property such as silicon nitride (Si 3 N 4 ) or boron nitride (BN) as a main component.
It is formed in a rectangular parallelepiped shape elongated in one direction. Further, the bottom surfaces of the pair of long side weirs 12a are formed so as to be close to each other on the side circumferences (hereinafter referred to as outer peripheral surfaces) of the pair of casting rolls 11. More specifically, the bottom surfaces of the pair of long side dams 12a are each formed in a concave shape having a generatrix having a diameter substantially the same as the radius of curvature of the outer peripheral surface of the pair of casting rolls 11 when viewed from the side.

【００６７】また、前記一対の短辺堰１２ｂは、それぞ
れ、一対の長辺堰１２ａと同じ材料で、かつ一対の長辺
堰１２ａに比べ、短尺な直方体状に形成されている。ま
た、一対の短辺堰１２ｂの底面は、それぞれ、一対の鋳
造ロール１１の外周面に、近接可能に形成されている。
詳述すると、一対の短辺堰１２ｂの底面は、それぞれ側
面視して、一対の鋳造ロール１１の曲率半径と、略同径
状の母線を持って先細り状に形成されている。The pair of short-side weirs 12b are made of the same material as the pair of long-side weirs 12a, and are formed in a rectangular parallelepiped shape shorter than the pair of long-side weirs 12a. Further, the bottom surfaces of the pair of short side weirs 12b are formed so as to be close to the outer peripheral surfaces of the pair of casting rolls 11, respectively.
More specifically, the bottom surfaces of the pair of short-side weirs 12b are formed in a tapered shape having a generatrix of a diameter substantially the same as the radius of curvature of the pair of casting rolls 11 when viewed from the side.

【００６８】また、一対の長辺堰１２ａ、及び、一対の
短辺堰１２ｂの内面は、それぞれ前記（１）式で求めら
れる、テーパー比（α）が、０．３％≦α≦１．５％の
テーパー面となっている。また、一対の長辺堰１２ａ、
及び、一対の短辺堰１２ｂ内には、前記テーパー面側
に、コイル収納用穴１２ｃが形成されている。そして、
このコイル収納用穴１２ｃ内に、誘導加熱用のコイル１
２ｄが、複数回巻装されると共に、交流電源等の電源
（図示せず）から、所定の電流／電圧が供給されるよう
になっている。The inner surfaces of the pair of long side weirs 12a and the pair of short side weirs 12b have a taper ratio (α) of 0.3% ≦ α ≦ 1. It has a 5% taper surface. In addition, a pair of long side weirs 12a,
Also, a coil housing hole 12c is formed in the pair of short side dams 12b on the tapered surface side. And
A coil 1 for induction heating is provided in the coil housing hole 12c.
2d is wound multiple times, and a predetermined current / voltage is supplied from a power source (not shown) such as an AC power source.

【００６９】また、一対の長辺堰１２ａ、及び、一対の
短辺堰１２ｂ内には、これら一対の長辺堰１２ａ、及
び、一対の短辺堰１２ｂの温度（換言すると溶融金属１
４の温度）を測定するための、熱電対等の温度計（図示
せず）が、複数箇所に取付けられている。また、温度計
で検出された、溶融金属１４の温度（以下検出値とい
う）は、制御部（図示せず）に入力されるようになって
いる。そして、制御部は、予め記憶された所定基準値
と、入力された検出値とを比較し、前記検出値が、前記
所定基準値の範囲を外れたとき、その差（検出値−所定
基準値）に応じて、所定の電流／電圧を、電源からコイ
ル１２ｄに供給する、オン／オフ信号を出力するように
なっている。In the pair of long side weirs 12a and the pair of short side weirs 12b, the temperatures of the pair of long side weirs 12a and the pair of short side weirs 12b (in other words, the molten metal 1
Thermometers (not shown) such as thermocouples for measuring the temperature (4) are attached at a plurality of locations. Further, the temperature of the molten metal 14 (hereinafter referred to as a detected value) detected by the thermometer is input to a control unit (not shown). Then, the control unit compares a predetermined reference value stored in advance with the input detection value, and when the detection value is out of the range of the predetermined reference value, the difference (detection value-predetermined reference value). ), A predetermined current / voltage is supplied from the power supply to the coil 12d, and an on / off signal is output.

【００７０】また、一対の長辺堰１２ａ、及び、一対の
短辺堰１２ｂは、その外面と、前記金属製の支持枠を、
連結する連結支持材（図示せず）によって、その底面
が、一対の鋳造ロール１１の外周面と、所定距離離間さ
れるように、支持されている。なお、一対の長辺堰１２
ａ、及び、一対の短辺堰１２ｂの底面と、一対の鋳造ロ
ール１１の外周面とは、０．１ｍｍ≦ｔ≦０．５ｍｍ、
好適には０．２ｍｍ≦ｔ≦０．４ｍｍの距離（ｔ）離間
されるのが好ましい。Further, the pair of long side weirs 12a and the pair of short side weirs 12b have their outer surfaces and the metal support frame,
A bottom surface of the casting roll 11 is supported by a joining support member (not shown) that is joined to the outer faces of the pair of casting rolls 11 so as to be separated therefrom by a predetermined distance. The pair of long side weirs 12
a and the bottom surfaces of the pair of short side weirs 12b and the outer peripheral surfaces of the pair of casting rolls 11 are 0.1 mm ≦ t ≦ 0.5 mm,
The distance (t) is preferably 0.2 mm ≦ t ≦ 0.4 mm.

【００７１】これは、前記距離が０．２ｍｍ未満では、
一対の鋳造ロール１１が、高速回転する際に、多少面触
れを起こし易いために、前記底面が、一対の鋳造ロール
１１の外周面によって、削られ易いので、一対の鋳造ロ
ール１１の外周面に、一対の長辺堰１２ａ、及び、一対
の短辺堰１２ｂを構成する、耐火物等の切削粉が堆積さ
れて、いわゆる断熱層が形成され易い。そして、これに
よって、凝固シェル１５ａの、凹凸状の疵の発生を防止
した、円滑な成長が阻害される（詳述すると、薄板１５
の表面に、一対の鋳造ロール１１の前記凹凸によって凹
凸状の疵が発生すると共に、薄板１５が冷却されるにつ
れて、前記凹凸から微細な表面割れが発生し易くなる）
傾向が現れ出し、特に０．１ｍｍ未満ではその傾向が著
しくなるからである。This means that when the distance is less than 0.2 mm,
When the pair of casting rolls 11 rotate at a high speed, they are likely to come into contact with each other to some extent. Therefore, the bottom surface is easily scraped by the outer peripheral surfaces of the pair of casting rolls 11. It is easy for a so-called heat insulating layer to be formed by depositing cutting powder of refractory or the like, which constitutes the pair of long side weirs 12a and the pair of short side weirs 12b. As a result, smooth growth of the solidified shell 15a that prevents the occurrence of irregularities in the solidified shell 15a is hindered (specifically, the thin plate 15).
(1) As the thin plate 15 is cooled, fine surface cracks are likely to occur as the thin plate 15 is cooled, as well as the unevenness of the surface of the pair of casting rolls 11 is caused by the unevenness.)
This is because a tendency appears, especially when it is less than 0.1 mm.

【００７２】また、前記距離が０．４ｍｍを越えると、
前記底面と、一対の鋳造ロール１１の外周面との間隙
に、溶融金属１４が入り込み易いので（前記間隙に溶融
金属１４が入り込むことを湯差しという）、前記底面、
及び、一対の鋳造ロール１１の外周面を損傷すると共
に、前記と同様に、薄板１５の表面性状を、悪化させる
傾向が現れ出し、特に０．５ｍｍを越えるとその傾向が
著しくなるからである。If the distance exceeds 0.4 mm,
Since the molten metal 14 easily enters the gap between the bottom surface and the outer peripheral surfaces of the pair of casting rolls 11 (the entry of the molten metal 14 into the gap is referred to as a jug), the bottom surface,
Also, there is a tendency that the outer peripheral surfaces of the pair of casting rolls 11 are damaged and the surface quality of the thin plate 15 is deteriorated, as described above. Particularly, when it exceeds 0.5 mm, the tendency becomes remarkable.

【００７３】続いて、本発明の第１の実施の形態に係る
薄板連続鋳造装置１０を用いた薄板連続鋳造方法につい
て説明する。なお、鋳型１２の上方には、湯溜部１３内
に溶融金属１４を注湯するための、タンディッシュ等の
注湯鍋（図示せず）が配置されるようになっている。ま
た、注湯鍋には、湯溜部１３内に溶融金属１４を注湯す
るための、浸漬ノズル（図示せず）等が取付けられてい
る。一方、一対の鋳造ロール１１の下方には、該一対の
鋳造ロール１１で引抜かれた薄板１５を、下方に引抜く
ためのピンチロール（図示せず）が取付けられている。
なお、図１中、符号１３ｆは鋳型１２の溶融金属注湯口
であり、また、図２中、符号１６は湯面保護材である。Next, a thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention will be described. A pouring pot (not shown) such as a tundish for pouring the molten metal 14 into the molten metal reservoir 13 is arranged above the mold 12. Further, an immersion nozzle (not shown) or the like for pouring the molten metal 14 into the hot water reservoir 13 is attached to the pouring pan. On the other hand, below the pair of casting rolls 11, a pinch roll (not shown) for pulling out the thin plate 15 pulled out by the pair of casting rolls 11 is attached.
Note that in FIG. 1, reference numeral 13f is a molten metal pouring port of the mold 12, and in FIG. 2, reference numeral 16 is a molten metal surface protection material.

【００７４】（実施例１）本発明の第１の実施の形態に
係る薄板連続鋳造装置１０を用いた、薄板連続鋳造方法
を適用して、クロム含有量５ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、連続鋳造する場合について
説明する。まず、一対の鋳造ロール１１を、それぞれ、
図２中、矢視する方向に、周速度６０ｍ／ｍｉｎで回転
させると共に、一対の鋳造ロール１１の、冷却水通水溝
１１ｃに冷却水を供給する。一方、制御部は、湯溜部１
３内に注湯される、溶融金属１４の温度を、常に、１５
２５℃〜１５７０℃の温度範囲内で、保持するように制
御すると共に、前記溶融金属１４の湯面から凝固開始位
置までの距離（Ｈ）を、常に、３ｃｍ≦Ｈ≦１０ｃｍの
範囲内に保持する（換言すると注湯される溶融金属１４
を湯溜部１３内で湯面下凝固させる）ために、温度計の
検出値によって、湯溜部１３内を監視し始める。(Example 1) Using the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, stainless steel having a chromium content of 5 wt% (S
A case of continuously casting the thin plate 15 of US304) will be described. First, the pair of casting rolls 11,
In FIG. 2, while rotating at a peripheral speed of 60 m / min in the direction of the arrow, cooling water is supplied to the cooling water passages 11c of the pair of casting rolls 11. On the other hand, the controller is the hot water reservoir 1
The temperature of the molten metal 14 poured into 3 is always 15
The temperature is controlled to be maintained within a temperature range of 25 ° C. to 1570 ° C., and the distance (H) from the molten metal 14 to the solidification start position is always maintained within the range of 3 cm ≦ H ≦ 10 cm. Yes (in other words, molten metal to be poured 14
In order to solidify the liquid under the surface of the molten metal in the hot water reservoir 13, the inside of the hot water reservoir 13 is started to be monitored by the detection value of the thermometer.

【００７５】次に、クロム含有量５ｗｔ％以上のステン
レス鋼（例えばＳＵＳ３０４）の、溶融金属１４を、注
湯鍋から浸漬ノズルを通して、湯溜部１３内に注湯す
る。次に、注湯された溶融金属１４は、まず、一対の鋳
造ロール１１の外周面との接触部位から急激に冷却され
て、凝固核（図示せず）が急速に生成されると共に、こ
の生成された凝固核が急速に成長して、視認可能な凝固
シェル１５ａが生成される。次に、生成された凝固シェ
ル１５ａは、急速に成長すると共に、一対の鋳造ロール
１１の最近接部位近傍で、一対の鋳造ロール１１によ
り、圧接されて薄板１５が生成される。そして、生成さ
れた薄板１５は、一対の鋳造ロール１１によって下方に
引抜かれる。これによって、板厚２ｍｍの薄板１５を鋳
造速度６０ｍ／ｍｉｎで連続鋳造することができた。Next, molten metal 14 of stainless steel (for example, SUS304) having a chromium content of 5 wt% or more is poured into the molten metal reservoir 13 from the pouring pan through the dipping nozzle. Next, the poured molten metal 14 is first rapidly cooled from the contact portion with the outer peripheral surfaces of the pair of casting rolls 11 to rapidly generate solidification nuclei (not shown), and this generation. The solidified nuclei thus grown grow rapidly, and a visible solidified shell 15a is generated. Next, the produced solidified shell 15a rapidly grows and is pressed by the pair of casting rolls 11 in the vicinity of the closest position of the pair of casting rolls 11 to produce the thin plate 15. Then, the generated thin plate 15 is drawn downward by the pair of casting rolls 11. As a result, the thin plate 15 having a plate thickness of 2 mm could be continuously cast at a casting speed of 60 m / min.

【００７６】（実施例２）次に、本発明の第１の実施の
形態に係る薄板連続鋳造装置１０を用いた、薄板連続鋳
造方法を適用して、カーボン含有量０．０３ｗｔ％〜
０．１０ｗｔ％の炭素鋼の薄板を、連続鋳造する場合に
ついて説明する。まず、一対の鋳造ロール１１を、それ
ぞれ、図２中、矢視する方向に、周速度３０ｍ／ｍｉｎ
で回転させると共に、一対の鋳造ロール１１の、冷却水
通水溝１１ｃに冷却水を供給する。一方、制御部は、前
記と同様に、注湯される溶融金属１４を、湯溜部１３内
で湯面下凝固させるために、温度計の検出値によって、
湯溜部１３内を監視し始める。次に、カーボン含有量
０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の、溶融金属
１４を、注湯鍋から浸漬ノズルを通して、湯溜部１３内
に注湯する。以下、本発明の第１の実施の形態に係る薄
板連続鋳造装置１０を用いた、薄板連続鋳造方法におけ
る、実施例１と同様にして、板厚４ｍｍの薄板１５を、
鋳造速度３０ｍ／ｍｉｎで連続鋳造することができた。(Example 2) Next, the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention is applied to apply a carbon content of 0.03 wt% to
A case of continuously casting a 0.10 wt% carbon steel thin plate will be described. First, each of the pair of casting rolls 11 has a peripheral speed of 30 m / min in the direction of the arrow in FIG.
While rotating with, the cooling water is supplied to the cooling water passage 11c of the pair of casting rolls 11. On the other hand, in the same manner as described above, the control unit uses the detection value of the thermometer to solidify the molten metal 14 to be poured under the molten metal in the molten metal reservoir 13,
Start monitoring the inside of the hot water tank 13. Next, the molten metal 14 of carbon steel having a carbon content of 0.03 wt% to 0.10 wt% is poured into the hot water reservoir 13 from the pouring pan through the dipping nozzle. Hereinafter, in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, in the same manner as in Example 1, a thin plate 15 having a plate thickness of 4 mm was prepared.
It was possible to perform continuous casting at a casting speed of 30 m / min.

【００７７】続いて、本発明の第１の実施の形態に係る
薄板連続鋳造装置１０を用いた、薄板連続鋳造方法で連
続鋳造される、薄板１５の表面性状の確認試験を行っ
た。以下、その結果について説明する。 （実施例３）まず、本発明の第１の実施の形態に係る薄
板連続鋳造装置１０を用いた、薄板連続鋳造方法を適用
して、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵＳ
３０４）の薄板１５を、湯溜部１３内の溶融金属１４の
湯面から凝固開始位置までの距離（Ｈ）を種々変更し
て、連続鋳造すると共に、連続鋳造された薄板１５の表
面性状を確認した。次に、溶融金属１４中にスカムが巻
き込まれて形成された、視認可能な、いわゆるスカム疵
の発生数を調べた後、従来の実施の形態に係る薄板連続
鋳造装置２００を用いた薄板連続鋳造方法を適用して、
クロム含有量１８ｗｔ％のステンレス鋼（ＳＵＳ３０
４）の薄板（図示せず）を連続鋳造したとき、薄板の表
面に発生した、スカム疵の発生数から得られた発生指数
を３．０として、前記各距離（Ｈ）に対するスカム疵の
発生指数を調べた。その結果を図３に示す。なお、前記
スカム疵の発生指数とは、スカム疵の発生し易さをい
い、この発生指数が小さい程、スカム疵が発生し難くな
ることを意味するものである。この図３から明らかなよ
うに、前記溶融金属１４の湯面から凝固開始位置までの
距離（Ｈ）を大きくするに伴って、連続鋳造される薄板
１５の表面に発生する、スカム疵の発生指数を低減する
（換言するとスカム疵の発生数を低減する）ことができ
ることがわかった。Subsequently, a confirmation test of the surface properties of the thin plate 15 continuously cast by the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention was conducted. Hereinafter, the results will be described. (Example 3) First, the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention is applied to a stainless steel (SUS) having a chromium content of 18 wt% (SUS).
304), the thin plate 15 is continuously cast by changing the distance (H) from the molten metal surface of the molten metal 14 in the molten metal pool 13 to the solidification start position, and the surface property of the continuously cast thin plate 15 is changed. confirmed. Next, after checking the number of visible so-called scum defects formed by the scum caught in the molten metal 14, continuous thin plate casting using the thin plate continuous casting apparatus 200 according to the conventional embodiment. Apply the method,
Stainless steel with a chromium content of 18 wt% (SUS30
When a thin plate (not shown) of 4) is continuously cast, the generation index obtained from the number of scum defects generated on the surface of the thin plate is 3.0, and the generation of scum defects for each distance (H) is generated. I checked the index. The result is shown in FIG. The scum defect occurrence index means the ease with which scum defects occur, and the smaller the occurrence index, the less likely scum defects occur. As is apparent from FIG. 3, as the distance (H) from the molten metal 14 to the solidification start position is increased, the scum flaw occurrence index generated on the surface of the continuously cast thin plate 15 is increased. It has been found that the above can be reduced (in other words, the number of scum defects generated can be reduced).

【００７８】以上のように、本発明の第１の実施の形態
に係る薄板連続鋳造装置１０、及び、それを用いた薄板
連続鋳造方法によれば、一対の鋳造ロール１１の上方に
鋳型１２を近接配置したことにより、湯溜部１３内に注
湯された溶融金属１４を、湯面下凝固させることがで
き、この結果、連続鋳造された薄板１５の表面疵を低減
することができる。また、鋳型１２を構成する、一対の
長辺堰１２ａ、及び、一対の短辺堰１２ｂに、テーパー
比（α）が、０．３％≦α≦１．５％のテーパー面を形
成したことにより、たとえ、溶融金属１４中に不純物等
が巻き込まれても、容易に不純物を湯面まで浮遊させる
ことができ、薄板１５の表面に鮫肌等が発生するのを防
止することができる。更に、従来のような、鮫肌等の発
生が極力抑制された、表面性状の良好な薄板１５を連続
鋳造することができ、従来のように、薄板１５が巻装さ
れたコイルをそのまま廃棄することを防止することがで
きる。As described above, according to the thin plate continuous casting apparatus 10 and the thin plate continuous casting method using the same according to the first embodiment of the present invention, the mold 12 is provided above the pair of casting rolls 11. Due to the close arrangement, the molten metal 14 poured into the molten metal reservoir 13 can be solidified below the molten metal surface, and as a result, surface defects of the continuously cast thin plate 15 can be reduced. Further, the pair of long side weirs 12a and the pair of short side weirs 12b forming the mold 12 are formed with tapered surfaces having a taper ratio (α) of 0.3% ≦ α ≦ 1.5%. Thus, even if impurities or the like are caught in the molten metal 14, the impurities can be easily floated up to the molten metal surface, and shark skin or the like can be prevented from being generated on the surface of the thin plate 15. Further, it is possible to continuously cast a thin plate 15 having a good surface quality in which the generation of shark skin and the like is suppressed as much as possible, and discarding the coil wound with the thin plate 15 as it is, as in the conventional case. Can be prevented.

【００７９】続いて、本発明の第２の実施の形態に係る
薄板連続鋳造装置２０について説明する。本発明の第２
の実施の形態に係る薄板連続鋳造装置２０が、本発明の
第１の実施の形態に係る薄板連続鋳造装置１０と異なる
のは、図４、図５に示すように、一対の短辺堰１２ｂの
間で、かつ、一対の長辺堰１２ａの間で、さらに、一対
の鋳造ロール１１の上方に近接配置されたスペーサー堰
２１を備えた点である。以下、これらについて詳しく説
明する。Next, the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention will be described. Second of the present invention
The thin plate continuous casting apparatus 20 according to the embodiment of the present invention differs from the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention as shown in FIGS. In addition, between the pair of long side weirs 12a, a spacer weir 21 is provided near the pair of casting rolls 11 and adjacent to each other. Hereinafter, these will be described in detail.

【００８０】前記スペーサー堰２１は、一対の長辺堰１
２ａ、及び、一対の短辺堰１２ｂと同じ材質で、かつ、
一対の短辺堰１２ｂとほぼ同じ形状に形成されている。
また、スペーサー堰２１の、一対の短辺堰１２ｂとの対
向面は、前記（１）式で求められるテーパー比（α）が
０．３％≦α≦１．５％のテーパー面となっている。な
お、スペーサー堰２１、及び、一対の短辺堰１２ｂの上
端に亘って、金属製等で、一方向に長尺に形成された、
一対の揺動防止材２２が掛け渡されると共に、一対の揺
動防止材２２と、スペーサー堰２１及び一対の短辺堰１
２ｂに亘って、ボルト・ナット等の締結具（図示せず）
が締結されている。これにより、次々と注湯される溶融
金属１４や、高速で回転する一対の鋳造ロール１１によ
って、スペーサー堰２１が、揺動するのを防止すること
ができる。また、鋳型１２ｆ内には、スペーサー堰２１
を設けたことによって、２つの湯溜部１３ａ、１３ｂが
形成されている。The spacer weir 21 is a pair of long side weirs 1.
2a and the same material as the pair of short side weirs 12b, and
The pair of short side weirs 12b are formed to have substantially the same shape.
The surface of the spacer weir 21 facing the pair of short side weirs 12b is a tapered surface having a taper ratio (α) of 0.3% ≦ α ≦ 1.5%, which is obtained by the equation (1). There is. In addition, over the upper ends of the spacer weir 21 and the pair of short side weirs 12b, the spacer weir 21 is made of metal or the like and is elongated in one direction.
A pair of rocking preventive members 22 are bridged, and a pair of rocking preventive members 22, a spacer weir 21, and a pair of short side dams 1
Fasteners (not shown) such as bolts and nuts over 2b
Has been concluded. As a result, the spacer weir 21 can be prevented from swinging by the molten metal 14 poured one after another and the pair of casting rolls 11 rotating at high speed. In addition, the spacer weir 21 is provided in the mold 12f.
By providing the above, two hot water reservoirs 13a and 13b are formed.

【００８１】続いて、本発明の第２の実施の形態に係る
薄板連続鋳造装置２０を用いた薄板連続鋳造方法につい
て説明する。なお、注湯鍋には、鋳型１２ｆの一対の湯
溜部１３ａ、１３ｂに、それぞれ溶融金属１４を注湯す
るための、一対の浸漬ノズル（図示せず）が設けられて
いる。 （実施例４）初めに、本発明の第２の実施の形態に係る
薄板連続鋳造装置２０を用いた、薄板連続鋳造方法を適
用して、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵ
Ｓ３０４）の薄板を、連続鋳造する場合について説明す
る。まず、本発明の第１の実施の形態に係る薄板連続鋳
造装置１０を用いた、薄板連続鋳造方法における、実施
例１と同様にして、一対の鋳造ロール１１を所定回転方
向に、周速度６０ｍ／ｍｉｎで回転させると共に、一対
の鋳造ロール１１の、冷却水通水溝１１ｃに冷却水を供
給し、さらに、制御部で、湯溜部１３ａ、１３ｂ内を監
視し始める。次に、クロム含有量１８ｗｔ％のステンレ
ス鋼（ＳＵＳ３０４）の、溶融金属１４を、注湯鍋から
浸漬ノズルを通して、湯溜部１３ａ、１３ｂ内に、それ
ぞれ注湯する。以下、本発明の第１の実施の形態に係る
薄板連続鋳造装置１０を用いた、薄板連続鋳造方法にお
ける実施例１と同様にして、板厚２ｍｍの薄板１５を２
条、鋳造速度６０ｍ／ｍｉｎで連続鋳造することができ
た。Next, a thin plate continuous casting method using the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention will be described. The pouring pan is provided with a pair of immersion nozzles (not shown) for pouring the molten metal 14 into the pair of hot water reservoirs 13a and 13b of the mold 12f. (Example 4) First, the thin plate continuous casting method using the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention was applied to produce stainless steel (SU having a chromium content of 18 wt%).
The case of continuously casting the thin plate of S304) will be described. First, in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, in the same manner as in Example 1, the pair of casting rolls 11 are rotated in a predetermined rotation direction at a peripheral speed of 60 m. / Min, while supplying the cooling water to the cooling water passage groove 11c of the pair of casting rolls 11, the controller starts monitoring the inside of the hot water reservoirs 13a and 13b. Next, molten metal 14 of stainless steel (SUS304) having a chromium content of 18 wt% is poured from the pouring pan into the hot water reservoirs 13a and 13b through the dipping nozzle. Hereinafter, in the same manner as in Example 1 of the continuous thin plate casting method using the continuous thin plate casting apparatus 10 according to the first embodiment of the present invention, two thin plates 15 with a plate thickness of 2 mm were used.
Continuous casting was possible at a strip speed of 60 m / min.

【００８２】（実施例５）次に、本発明の第２の実施の
形態に係る薄板連続鋳造装置２０を用いた、薄板連続鋳
造方法を適用して、カーボン含有量０．０３ｗｔ％〜
０．１０ｗｔ％の炭素鋼の薄板を、連続鋳造する場合に
ついて説明する。まず、本発明の第１の実施の形態に係
る薄板連続鋳造装置１０を用いた、薄板連続鋳造方法に
おける、実施例２と同様にして、一対の鋳造ロール１１
を所定回転方向に、周速度３０ｍ／ｍｉｎで回転させる
と共に、一対の鋳造ロール１１の、冷却水通水溝１１ｃ
に冷却水を供給し、さらに、制御部で、湯溜部１３ａ、
１３ｂ内を監視し始める。次に、カーボン含有量０．０
３ｗｔ％〜０．１０ｗｔ％の炭素鋼の、溶融金属１４
を、注湯鍋から浸漬ノズルを通して、湯溜部１３ａ、１
３ｂ内に、それぞれ注湯する。以下、本発明の第１の実
施の形態に係る薄板連続鋳造装置１０を用いた、薄板連
続鋳造方法における、実施例２と同様にして、板厚４ｍ
ｍの薄板１５を２条、鋳造速度３０ｍ／ｍｉｎで連続鋳
造することができた。(Example 5) Next, the thin plate continuous casting method using the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention is applied, and a carbon content of 0.03 wt% to
A case of continuously casting a 0.10 wt% carbon steel thin plate will be described. First, in the same manner as in Example 2 in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, a pair of casting rolls 11 is used.
Is rotated in a predetermined rotation direction at a peripheral speed of 30 m / min, and the cooling water passage groove 11c of the pair of casting rolls 11 is rotated.
Cooling water is supplied to the hot water reservoir 13a,
Start monitoring inside 13b. Next, the carbon content is 0.0
Molten metal 14 of 3 wt% to 0.10 wt% carbon steel
From the pouring pan through the dipping nozzle to the hot water reservoir 13a, 1
Pour in each of 3b. Hereinafter, in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, in the same manner as in Example 2, the plate thickness is 4 m.
It was possible to continuously cast two thin sheets 15 of m at a casting speed of 30 m / min.

【００８３】以上のように、本発明の第２の実施の形態
に係る薄板連続鋳造装置２０によれば、本発明の第１の
実施の形態に係る薄板連続鋳造装置１０、及び、それを
用いた薄板連続鋳造方法と同様の効果が得られる他、ス
ペーサー堰２１を有するので、１基の薄板連続鋳造装置
２０による、１度の連続鋳造操業によって、同時に２条
の薄板１５を連続鋳造することができると共に、従来の
薄板１５の切断工程を省略、或いは薄板１５のトリミン
グ量を低減することができる。また、スペーサー堰２１
に、所定のテーパー比を有するテーパー面を設けたの
で、前記と同様に、薄板１５の表面に疵がつくのを防止
することができる。さらに、揺動防止材２２を設けたの
で、スペーサー堰２１が揺動するのを防止することがで
きるために、湯溜部１３ａ、１３ｂ内の溶融金属１４が
揺動して、従来のように、薄板１５の表面に疵がつくの
を防止することができる。As described above, according to the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention, the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention and the thin plate continuous casting apparatus 10 are used. The same effect as the thin plate continuous casting method can be obtained, and since the spacer weir 21 is provided, it is possible to continuously cast two thin plates 15 simultaneously by one continuous casting operation by one thin plate continuous casting device 20. In addition, the conventional cutting process of the thin plate 15 can be omitted, or the trimming amount of the thin plate 15 can be reduced. In addition, the spacer weir 21
In addition, since the tapered surface having the predetermined taper ratio is provided, it is possible to prevent the surface of the thin plate 15 from being flawed as in the above. Further, since the rocking preventive material 22 is provided, it is possible to prevent the spacer weir 21 from rocking, so that the molten metal 14 in the hot water reservoirs 13a and 13b rocks, which is different from the conventional case. It is possible to prevent the surface of the thin plate 15 from being scratched.

【００８４】一方、本発明の第２の実施の形態に係る薄
板連続鋳造装置２０を用いた、薄板連続鋳造方法によれ
ば、本発明の第１の実施の形態に係る薄板連続鋳造装置
１０を用いた、薄板連続鋳造方法と、同様の効果が得ら
れる他、薄板１５のトリミング量を減少することができ
ると共に、バリや耳波等の発生を抑制して、良好なエッ
ジ形状の薄板１５を、２条連続鋳造することができる。On the other hand, according to the thin plate continuous casting method using the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention, the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention is used. In addition to the same effect as the thin plate continuous casting method used, the trimming amount of the thin plate 15 can be reduced, and the thin plate 15 having a good edge shape can be obtained by suppressing the occurrence of burrs, ear waves and the like. Two-row continuous casting can be performed.

【００８５】続いて、本発明の第３の実施の形態に係る
薄板連続鋳造装置３０について説明する。本発明の第３
の実施の形態に係る薄板連続鋳造装置３０が、本発明の
第２の実施の形態に係る薄板連続鋳造装置２０と異なる
のは、図６に示すように、スペーサー堰２１を２個備え
た点である。なお、スペーサー堰２１の、一対の短辺堰
１２ｂとの対向面や、相対する他のスペーサー堰２１と
の対向面は、それぞれ、前記（１）式で求められるテー
パー比（α）が０．３％≦α≦１．５％のテーパー面と
なっている。また、スペーサー堰２１を２個設けたの
で、鋳型１２ｇ内には、３つの湯溜部１３ｃ〜１３ｅが
形成されている。Next, a thin plate continuous casting apparatus 30 according to a third embodiment of the present invention will be described. Third of the present invention
The thin plate continuous casting apparatus 30 according to the embodiment of the present invention is different from the thin plate continuous casting apparatus 20 according to the second embodiment of the present invention in that, as shown in FIG. 6, two spacer weirs 21 are provided. Is. The surface of the spacer weir 21 that faces the pair of short-side weirs 12b and the surface that faces the other spacer weir 21 that faces each other have a taper ratio (α) of 0. The taper surface is 3% ≦ α ≦ 1.5%. Moreover, since two spacer weirs 21 are provided, three hot water reservoirs 13c to 13e are formed in the mold 12g.

【００８６】続いて、本発明の第３の実施の形態に係る
薄板連続鋳造装置３０を用いた、薄板連続鋳造方法につ
いて説明する。なお、注湯鍋には、それぞれの湯溜部１
３ｃ〜１３ｅに溶融金属１４を注湯するために、３つの
浸漬ノズル（図示せず）が設けられている。 （実施例６）初めに、本発明の第３の実施の形態に係る
薄板連続鋳造装置３０を用いた、薄板連続鋳造方法を適
用して、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵ
Ｓ３０４）の薄板を、連続鋳造する場合について説明す
る。まず、本発明の第１の実施の形態に係る薄板連続鋳
造装置１０を用いた、薄板連続鋳造方法における、実施
例１と同様にして、一対の鋳造ロール１１を所定回転方
向に、周速度６０ｍ／ｍｉｎで回転させると共に、一対
の鋳造ロール１１の、冷却水通水溝１１ｃに冷却水を供
給し、さらに、制御部で、湯溜部１３ｃ〜１３ｅ内を監
視し始める。次に、クロム含有量１８ｗｔ％のステンレ
ス鋼（ＳＵＳ３０４）の、溶融金属１４を、注湯鍋から
浸漬ノズルを通して、湯溜部１３ｃ〜１３ｅ内に、それ
ぞれ注湯する。以下、本発明の第１の実施の形態に係る
薄板連続鋳造装置１０を用いた、薄板連続鋳造方法にお
ける、実施例１と同様にして、板厚２ｍｍの薄板１５を
３条、鋳造速度６０ｍ／ｍｉｎで連続鋳造することがで
きた。Next, a thin plate continuous casting method using the thin plate continuous casting apparatus 30 according to the third embodiment of the present invention will be described. In addition, each pouring pot 1
Three immersion nozzles (not shown) are provided for pouring the molten metal 14 into 3c to 13e. (Example 6) First, the thin plate continuous casting method using the thin plate continuous casting apparatus 30 according to the third embodiment of the present invention was applied to a stainless steel (SU having a chromium content of 18 wt% (SU).
The case of continuously casting the thin plate of S304) will be described. First, in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, in the same manner as in Example 1, the pair of casting rolls 11 are rotated in a predetermined rotation direction at a peripheral speed of 60 m. / Min, while supplying cooling water to the cooling water passage groove 11c of the pair of casting rolls 11, the controller starts monitoring the inside of the hot water reservoirs 13c to 13e. Next, molten metal 14 of stainless steel (SUS304) having a chromium content of 18 wt% is poured from the pouring pan into the hot water reservoirs 13c to 13e through the dipping nozzle. Hereinafter, in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, three thin plates 15 having a plate thickness of 2 mm and a casting speed of 60 m / It was possible to perform continuous casting in min.

【００８７】（実施例７）次に、本発明の第３の実施の
形態に係る薄板連続鋳造装置３０を用いた、薄板連続鋳
造方法を適用して、カーボン含有量０．０３ｗｔ％〜
０．１０ｗｔ％の炭素鋼の薄板を、連続鋳造する場合に
ついて説明する。まず、本発明の第１の実施の形態に係
る薄板連続鋳造装置１０を用いた、薄板連続鋳造方法に
おける、実施例２と同様にして、一対の鋳造ロール１１
を所定回転方向に、周速度３０ｍ／ｍｉｎで回転させる
と共に、一対の鋳造ロール１１の、冷却水通水溝１１ｃ
に冷却水を供給し、さらに、制御部で、湯溜部１３ｃ〜
１３ｅ内を監視し始める。次に、カーボン含有量０．０
３ｗｔ％〜０．１０ｗｔ％の炭素鋼の、溶融金属１４
を、注湯鍋から浸漬ノズルを通して、湯溜部１３ｃ〜１
３ｅ内に、それぞれ注湯する。以下、本発明の第１の実
施の形態に係る薄板連続鋳造装置１０を用いた、薄板連
続鋳造方法における、実施例２と同様にして、板厚４ｍ
ｍの薄板１５を３条、鋳造速度３０ｍ／ｍｉｎで連続鋳
造することができた。(Embodiment 7) Next, a thin plate continuous casting method using the thin plate continuous casting apparatus 30 according to the third embodiment of the present invention is applied, and a carbon content of 0.03 wt% to
A case of continuously casting a 0.10 wt% carbon steel thin plate will be described. First, in the same manner as in Example 2 in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, a pair of casting rolls 11 is used.
Is rotated in a predetermined rotation direction at a peripheral speed of 30 m / min, and the cooling water passage groove 11c of the pair of casting rolls 11 is rotated.
To the hot water reservoir 13c ~
Start monitoring inside 13e. Next, the carbon content is 0.0
Molten metal 14 of 3 wt% to 0.10 wt% carbon steel
From the pouring pan through the dipping nozzle to the hot water reservoir 13c-1
Pouring in 3e, respectively. Hereinafter, in the thin plate continuous casting method using the thin plate continuous casting apparatus 10 according to the first embodiment of the present invention, in the same manner as in Example 2, the plate thickness is 4 m.
It was possible to continuously cast 3 thin sheets 15 of m at a casting speed of 30 m / min.

【００８８】以上のように、本発明の第３の実施の形態
に係る薄板連続鋳造装置３０、及び、それを用いた薄板
連続鋳造方法によれば、本発明の第２の実施の形態に係
る薄板連続鋳造装置２０、及び、それを用いた薄板連続
鋳造方法と、同様の効果が得られる他、スペーサー堰２
１を２個有するので、１基の薄板連続鋳造装置３０によ
る、１度の連続鋳造操業によって、同時に３条の薄板１
５を、連続鋳造することができる。As described above, according to the thin plate continuous casting apparatus 30 and the thin plate continuous casting method using the same according to the third embodiment of the present invention, the second embodiment of the present invention is described. The thin plate continuous casting apparatus 20 and the thin plate continuous casting method using the same can obtain the same effects as the spacer weir 2.
Since there are two 1s, one continuous casting operation by one thin plate continuous casting apparatus 30 allows three thin plates 1 to be simultaneously processed.
5 can be continuously cast.

【００８９】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０について説明する。本発明の第４
の実施の形態に係る薄板連続鋳造装置４０が、本発明の
第１〜第３の実施の形態に係る薄板連続鋳造装置１０〜
３０と異なるのは、図７に示すように、一対の短辺堰１
２ｂに、一対の短辺堰１２ｂを、一対の長辺堰１２ａの
側線方向に沿って、進退させるために、上下一対の直線
駆動手段３１ａからなる、進退手段３１を備えた点であ
る。以下、これらについて詳しく説明する。Next, a thin plate continuous casting apparatus 40 according to a fourth embodiment of the present invention will be described. Fourth Embodiment of the Present Invention
The thin plate continuous casting apparatus 40 according to the embodiment of the present invention is the thin plate continuous casting apparatus 10 according to the first to third embodiments of the present invention.
The difference from 30 is that, as shown in FIG.
2b is provided with an advancing / retreating means 31 composed of a pair of upper and lower linear driving means 31a for advancing / retreating the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a. Hereinafter, these will be described in detail.

【００９０】前記一対の短辺堰１２ｂの外面の上部、及
び、下部には、それぞれ軸支部１２ｅが形成され、ま
た、前記金属製の支持枠の、前記軸支部１２ｅとの対向
部には、それぞれ、ステッピングシリンダ等の油圧シリ
ンダからなる、直線駆動手段３１ａが取付けられてい
る。そして、一対の直線駆動手段３１ａの、進退自在の
ロッド部３１ｂの先端に、一対の直線駆動手段３１ａ
の、中心軸方向と直交方向に延設された、軸部３１ｃが
形成されると共に、この軸部３１ｃが、それぞれ前記軸
支部１２ｅに回動自在に軸支されている。なお、一対の
直線駆動手段３１ａの各ポート（図示せず）は、それぞ
れ、油圧ポンプ等の供給装置に連通され、また、前記制
御部によって、作動油又は空気が、前記供給装置から一
方のポートに供給されると共に、他方のポートから前記
供給装置に排出されるようになっている。また、一対の
長辺堰１２ａと、一対の短辺堰１２ｂとは分離されてい
る。Shaft supporting portions 12e are formed on the upper and lower portions of the outer surface of the pair of short side dams 12b, respectively, and at the portion of the metal support frame facing the shaft supporting portions 12e, The linear drive means 31a, which is a hydraulic cylinder such as a stepping cylinder, is attached to each. Then, the pair of linear driving means 31a is attached to the tips of the rod portions 31b of the pair of linear driving means 31a which can move forward and backward.
The shaft portion 31c extending in the direction orthogonal to the central axis direction is formed, and the shaft portion 31c is rotatably supported by the shaft supporting portion 12e. Each port (not shown) of the pair of linear driving means 31a communicates with a supply device such as a hydraulic pump, and the control unit allows the operating oil or air to flow from one of the ports to the supply device. And is discharged to the supply device from the other port. Further, the pair of long side weirs 12a and the pair of short side weirs 12b are separated.

【００９１】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、薄板連続鋳造方法につ
いて説明する。 （実施例８）まず、前記実施例１と同様にして、板厚２
ｍｍの、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵ
Ｓ３０４）の薄板１５を、鋳造速度６０ｍ／ｍｉｎで連
続鋳造し始めた。そして、連続操業中、薄板１５の板幅
変更を実施した。以下、薄板１５の板幅を変更する、板
幅変更方法について、説明する。Next, a thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention will be described. (Embodiment 8) First, in the same manner as in Embodiment 1, the plate thickness 2
mm stainless steel with a chromium content of 18 wt% (SU
The thin plate 15 of S304) was continuously cast at a casting speed of 60 m / min. Then, the plate width of the thin plate 15 was changed during the continuous operation. Hereinafter, a plate width changing method for changing the plate width of the thin plate 15 will be described.

【００９２】なお、ここでは、図７中、左方の短辺堰１
２ｂについて説明するが、図７中、右方の短辺堰１２ｂ
は、前記左方の短辺堰１２ｂと、線対称の動作をするも
のとする。また、制御部には、予め板幅の拡縮を開始す
る、板幅拡縮開始時刻（詳述すると、板幅縮小開始時
刻、板幅拡大開始時刻）や、板幅の総拡縮量に応じた、
一対の直線駆動手段３１ａの、ストローク量等が記憶さ
れているものとする。Here, in FIG. 7, the short side weir 1 on the left side is shown.
2b will be described, but the short side weir 12b on the right side in FIG.
Operates in line symmetry with the left short side weir 12b. In addition, according to the plate width expansion / contraction start time (specifically, the plate width reduction start time and the plate width expansion start time), which starts the expansion / contraction of the plate width in advance, and the total expansion / contraction amount of the plate width.
It is assumed that the stroke amount and the like of the pair of linear driving means 31a are stored.

【００９３】初めに、薄板１５の板幅を縮小する、板幅
変更方法について、説明する。まず、制御部は、予め記
憶された、板幅縮小開始時刻等を検知すると、一対の短
辺堰１２ｂを、一対の長辺堰１２ａの側線方向に沿っ
て、一対の短辺堰１２ｂ同士を近接する方向（以下、図
８（ａ）〜（ｃ）中、矢視Ａ方向という）に移動させ
る、板幅縮小信号を、供給装置に出力する。次に、供給
装置は、上方の直線駆動手段３１ａの、一方のポートに
作動油を供給すると共に、他方のポートから作動油を排
出し、上方の直線駆動手段３１ａのロッド部３１ｂを、
図８（ａ）中、矢視Ａ方向に、所定量移動させる。これ
により、一対の短辺堰１２ｂは、図８（ｂ）に示すよう
に、下方の直線駆動手段３１ａの軸部３１ｃ（以下一対
の短辺堰１２ｂの下部という）を回動中心として、時計
周りに所定僅少角度（γ）回動される（第１傾斜動工
程）。すなわち、一対の短辺堰１２ｂの外面は、図８
（ｂ）中、矢視Ａ方向に、所定僅少角度（γ）傾斜され
る。First, a plate width changing method for reducing the plate width of the thin plate 15 will be described. First, when the control unit detects the plate width reduction start time stored in advance, the control unit detects the pair of short side weirs 12b and the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a. A plate width reduction signal for moving in the approaching direction (hereinafter, referred to as arrow A direction in FIGS. 8A to 8C) is output to the supply device. Next, the supply device supplies the operating oil to one port of the upper linear driving means 31a, discharges the operating oil from the other port, and removes the rod portion 31b of the upper linear driving means 31a.
In FIG. 8A, it is moved by a predetermined amount in the direction of arrow A. As a result, the pair of short-side weirs 12b, as shown in FIG. 8 (b), use the shaft portion 31c of the lower linear drive means 31a (hereinafter referred to as the lower portion of the pair of short-side weirs 12b) as a rotation center. It is rotated a predetermined small angle (γ) around (first tilting motion step). That is, the outer surfaces of the pair of short-side weirs 12b are formed as shown in FIG.
In (b), a predetermined slight angle (γ) is inclined in the direction of arrow A.

【００９４】次に、供給装置は、予め記憶された、上方
の直線駆動手段３１ａの移動ストローク等によって、第
１傾斜動工程の終了を検知すると、下方の直線駆動手段
３１ａの、一方のポートに作動油を供給すると共に、他
方のポートから作動油を排出し、下方の直線駆動手段３
１ａのロッド部３１ｂを、図８（ｂ）中、矢視Ａ方向に
所定量移動させる。これにより、一対の短辺堰１２ｂ
は、図８（ｃ）に示すように、上方の直線駆動手段３１
ａの軸部３１ｃ（以下一対の短辺堰１２ｂの上部とい
う）を回動中心として、反時計周りに所定僅少角度
（γ′）回動される（第２傾斜動工程）。すなわち、一
対の短辺堰１２ｂの外面は、図８（ｃ）中、矢視Ａ方向
に、所定僅少角度（γ′）傾斜される。これにより、連
続鋳造される薄板１５の板幅を縮小する、板幅変更を完
了する。Next, when the supply device detects the end of the first tilting motion step by the previously stored moving stroke of the upper linear driving means 31a or the like, one of the ports of the lower linear driving means 31a is detected. The hydraulic oil is supplied and at the same time the hydraulic oil is discharged from the other port.
The rod portion 31b of 1a is moved by a predetermined amount in the direction of arrow A in FIG. Thereby, the pair of short side weirs 12b
Is the upper linear drive means 31 as shown in FIG.
The shaft 31c of a (hereinafter referred to as the upper part of the pair of short side dams 12b) is rotated counterclockwise by a predetermined small angle (γ ') (second tilting motion step). That is, the outer surfaces of the pair of short side weirs 12b are inclined in the direction of arrow A in FIG. This completes the plate width change for reducing the plate width of the continuously cast thin plate 15.

【００９５】なお、第１傾斜動工程、終了時における、
一対の短辺堰１２ｂの内面の、鉛直方向に対する傾斜角
度（λ）は、約１．１４６°以下とされるのが好ましい
（図８（ｂ）参照）。なぜなら、それを越えると、溶融
金属１４中に巻き込まれた不純物等を、湯面に浮遊させ
ることが困難となるからである。また、第２傾斜動工
程、終了時における、一対の短辺堰１２ｂの内面の、鉛
直方向に対する傾斜角度（μ）は、約０．１７２°以上
とされるのが好ましい（図８（ｃ）参照）。なぜなら、
それ未満では、一対の短辺堰１２ｂの内面に接触した溶
融金属１４を、剥離させることが困難となるからであ
る。また、前記の理由から前記傾斜角度（λ）は約０．
１７２°以上、また前記傾斜角度（μ）は約１．１４６
°以下とされるのが好ましい。At the end of the first tilting step,
The inclination angle (λ) of the inner surfaces of the pair of short side dams 12b with respect to the vertical direction is preferably about 1.146 ° or less (see FIG. 8B). The reason for this is that if it exceeds that, it becomes difficult to float the impurities and the like caught in the molten metal 14 on the molten metal surface. In addition, the inclination angle (μ) of the inner surfaces of the pair of short-side dams 12b with respect to the vertical direction at the end of the second tilting step is preferably about 0.172 ° or more (FIG. 8 (c)). reference). Because
This is because if it is less than that, it becomes difficult to separate the molten metal 14 contacting the inner surfaces of the pair of short side dams 12b. In addition, the inclination angle (λ) is about 0.
172 ° or more, and the inclination angle (μ) is about 1.146.
° or less.

【００９６】次に、薄板１５の板幅を拡大する、板幅変
更方法について、説明する。なお、連続鋳造される薄板
１５の板幅を拡大する、板幅変更の場合は、前記と逆の
動作を行うことにより、板幅を変更することができる。
まず、前記と同様に、制御部が、予め記憶された、板幅
拡大開始時刻等を検知して、一対の短辺堰１２ｂを、一
対の長辺堰１２ａの側線方向に沿って、一対の短辺堰１
２ｂ同士を離反する方向（以下、図８（ａ）〜（ｃ）
中、矢視Ａ′方向という）に移動させる、板幅拡大信号
を、供給装置に出力する。そして、供給装置が、前記と
逆の動作を行って、下方の直線駆動手段３１ａのロッド
部３１ｂを、図８（ｃ）中、矢視Ａ′方向に所定量移動
させることにより、一対の短辺堰１２ｂは、その上部を
回動中心として、時計周りに所定僅少角度（γ′）回動
され、一対の短辺堰１２ｂの外面は、図８（ｂ）中、矢
視Ａ′方向に、所定僅少角度（γ′）傾斜される（第１
傾斜動工程）。Next, a plate width changing method for expanding the plate width of the thin plate 15 will be described. In the case of changing the plate width by enlarging the plate width of the thin plate 15 to be continuously cast, the plate width can be changed by performing the operation reverse to the above.
First, similarly to the above, the control unit detects the plate width expansion start time and the like that are stored in advance, and sets the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a. Short side weir 1
2b is separated from each other (hereinafter, FIGS. 8A to 8C).
A plate width enlargement signal for moving in the direction of arrow A ') is output to the supply device. Then, the supply device performs the opposite operation to move the rod portion 31b of the lower linear drive means 31a by a predetermined amount in the direction of arrow A'in FIG. The side dam 12b is rotated clockwise by a predetermined small angle (γ ') with the upper part thereof as the center of rotation, and the outer surfaces of the pair of short side dams 12b are directed in the direction of arrow A'in FIG. 8 (b). , Inclined by a predetermined small angle (γ ') (first
Tilting process).

【００９７】次に、前記と同様に、供給装置が、予め記
憶された、下方の直線駆動手段３１ａの移動ストローク
等によって、第１傾斜動工程の終了を検知して、前記と
逆の動作を行って、上方の直線駆動手段３１ａのロッド
部３１ｂを、図８（ｂ）中、矢視Ａ′方向に所定量移動
させることにより、一対の短辺堰１２ｂは、その下部を
回動中心として、反時計周りに所定僅少角度（γ）回動
され、一対の短辺堰１２ｂの外面は、図８（ａ）中、矢
視Ａ′方向に、所定僅少角度（γ）傾斜される（第２傾
斜動工程）。これにより、連続鋳造される薄板１５の板
幅を拡大する、板幅変更を完了する。Next, in the same manner as described above, the supply device detects the end of the first tilting movement step by the previously stored movement stroke of the lower linear drive means 31a, and performs the reverse operation. Then, the rod portion 31b of the upper linear drive means 31a is moved by a predetermined amount in the direction of arrow A'in FIG. 8 (b), whereby the pair of short side weirs 12b have their lower portions as rotation centers. , Is rotated counterclockwise by a predetermined small angle (γ), and the outer surfaces of the pair of short side weirs 12b are inclined by a predetermined small angle (γ) in the direction of arrow A ′ in FIG. 2 tilting process). As a result, the plate width change for expanding the plate width of the continuously cast thin plate 15 is completed.

【００９８】なお、前記と同様の理由から、第１傾斜動
工程、終了時における、一対の短辺堰１２ｂの内面の、
鉛直方向に対する傾斜角度（λ）は、約１．１４６°以
下（図８（ｂ）参照）、また、第２傾斜動工程、終了時
における、一対の短辺堰１２ｂの内面の、鉛直方向に対
する傾斜角度（μ）は、約０．１７２°以上（図８
（ａ）参照）とされるのが好ましい。また、前記の理由
から前記傾斜角度（λ）は約０．１７２°以上、また前
記傾斜角度（μ）は約１．１４６°以下とされるのが好
ましい。For the same reason as above, at the end of the first tilting step, the inner surfaces of the pair of short side weirs 12b,
The inclination angle (λ) with respect to the vertical direction is about 1.146 ° or less (see FIG. 8B), and the inner surface of the pair of short side dams 12b with respect to the vertical direction at the end of the second tilting step. The inclination angle (μ) is about 0.172 ° or more (see FIG. 8).
(See (a)). For the above reason, it is preferable that the inclination angle (λ) is about 0.172 ° or more and the inclination angle (μ) is about 1.146 ° or less.

【００９９】また、前記板幅変更方法では、板幅を縮小
するとき、又は、板幅を拡大するときの、一対の短辺堰
１２ｂの傾斜角度（γ又はγ′）を異ならせたが、この
一対の短辺堰１２ｂの傾斜角度は、同じにしてもよい。
さらに、前述したように、図７中、右方の短辺堰１２ｂ
は、図７中、左方の短辺堰１２ｂと、線対称の動作をす
るものとしたが、一対の短辺堰１２ｂの動作を異ならせ
てもよい。In the plate width changing method, the inclination angles (γ or γ ′) of the pair of short side dams 12b are made different when the plate width is reduced or when the plate width is enlarged. The inclination angles of the pair of short side dams 12b may be the same.
Further, as described above, the short side weir 12b on the right side in FIG.
In FIG. 7, the left side weir 12b and the left side weir 12b are symmetrically operated, but the pair of short side weirs 12b may be operated differently.

【０１００】すなわち、例えば、図９に示すように、板
幅を縮小するとき、第１傾斜動工程で、図９中、左方の
短辺堰１２ｂは、その下部を回動中心として、時計周り
に所定僅少角度（γ）回動させる一方、図９中、右方の
短辺堰１２ｂは、その上部を回動中心として、時計周り
に所定僅少角度（γ）回動させ、さらに、第２傾斜動工
程で、図９中、左方の短辺堰１２ｂは、その上部を回動
中心として、反時計周りに所定僅少角度（γ′）回動さ
せる一方、図９中、右方の短辺堰１２ｂは、その下部を
回動中心として、反時計周りに所定僅少角度（γ′）回
動させてもよい。That is, for example, as shown in FIG. 9, when the plate width is reduced, in the first tilting step, the short side weir 12b on the left side in FIG. On the other hand, the short side weir 12b on the right side in FIG. 9 is rotated by a predetermined small angle (γ) in the clockwise direction around the upper part as the center of rotation, while further rotating by a predetermined small angle (γ) in the clockwise direction. In the 2 tilting process, the short side weir 12b on the left side in FIG. 9 is rotated counterclockwise by a predetermined slight angle (γ ′) with the upper part thereof as the center of rotation, while on the right side in FIG. The short side weir 12b may be rotated counterclockwise by a predetermined small angle (γ ') with its lower portion as the center of rotation.

【０１０１】また、前記実施例８では、前記実施例１と
同様に、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵ
Ｓ３０４）の薄板１５を、連続鋳造する場合について、
説明したが、前記実施例２と同様に、カーボン含有量
０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の薄板１５
を、連続鋳造する場合についても、同様に板幅変更する
ことができる。In Example 8, as in Example 1, stainless steel containing 18 wt% chromium (SU) was used.
In the case of continuously casting the thin plate 15 of S304),
As described above, similar to the second embodiment, the carbon steel thin plate 15 having a carbon content of 0.03 wt% to 0.10 wt% is used.
In the case of continuously casting, the plate width can be similarly changed.

【０１０２】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、薄板連続鋳造方法にお
ける、薄板の板幅変更方法によって、連続鋳造される、
薄板の表面性状の確認試験を行った。以下、その結果に
ついて説明する。 （実施例９）まず、本発明の第４の実施の形態に係る薄
板連続鋳造装置４０を用いた、薄板連続鋳造方法を適用
して、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵＳ
３０４）の薄板１５を、一対の短辺堰１２ｂの移動速度
を、種々変更して、連続鋳造すると共に、連続鋳造され
た薄板１５の表面性状を確認した。Subsequently, continuous casting is performed by the thin plate width changing method in the thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention.
A confirmation test of the surface properties of the thin plate was performed. Hereinafter, the results will be described. (Example 9) First, a thin plate continuous casting method using a thin plate continuous casting apparatus 40 according to a fourth embodiment of the present invention was applied to a stainless steel (SUS) having a chromium content of 18 wt% (SUS).
The thin plate 15 of 304) was continuously cast by changing the moving speeds of the pair of short side weirs 12b, and the surface properties of the continuously cast thin plate 15 were confirmed.

【０１０３】そして、肉眼で確認できるスカム疵の数を
調べた後、前記実施例３と同様にして、従来の実施の形
態に係る薄板連続鋳造装置２００を用いた、薄板連続鋳
造方法を適用して、クロム含有量１８ｗｔ％のステンレ
ス鋼（ＳＵＳ３０４）の薄板１５を連続鋳造したとき
の、薄板１５の表面に発生した、スカム疵の発生数から
得られた発生指数を３．０として、前記一対の短辺堰１
２ｂの移動速度に対するスカム疵の発生指数を調べた。
その結果を図１０に示す。Then, after checking the number of scum defects that can be visually confirmed, the thin plate continuous casting method using the thin plate continuous casting apparatus 200 according to the conventional embodiment was applied in the same manner as in Example 3. Then, when the thin plate 15 of stainless steel (SUS304) having a chromium content of 18 wt% is continuously cast, the generation index obtained from the number of scum defects generated on the surface of the thin plate 15 is 3.0, Short side weir 1
The index of occurrence of scum defects with respect to the moving speed of 2b was examined.
The result is shown in FIG.

【０１０４】この図１０から明らかなように、一対の短
辺堰１２ｂの移動速度（ＶC ）が４０ｍｍ／ｍｉｎ≦Ｖ
C ≦２００ｍｍ／ｍｉｎを外れると、連続鋳造される薄
板１５の表面に発生するスカム疵の発生指数が増加する
ことがわかった。なお、一対の短辺堰１２ｂの移動速度
（ＶC ）とは、第１傾斜動工程の開始時から、第２傾斜
動工程の終了時までに、一対の短辺堰１２ｂが移動する
距離を、第１傾斜動工程の開始時から、第２傾斜動工程
の終了時までの、所要時間（Ｔ1）で除したものであ
る。As is apparent from FIG. 10, the moving speed (V C ) of the pair of short side dams 12b is 40 mm / min ≦ V.
It was found that if C ≤ 200 mm / min, the index of occurrence of scum defects on the surface of the continuously cast thin plate 15 increases. The moving speed (V C ) of the pair of short-side weirs 12b is the distance that the pair of short-side weirs 12b moves from the start of the first tilting motion step to the end of the second tilting motion step. , The time from the start of the first tilting motion step to the end of the second tilting motion step, divided by the required time (T 1 ).

【０１０５】以上のように、本発明の第４の実施の形態
に係る薄板連続鋳造装置４０、及び、それを用いた薄板
連続鋳造方法によれば、本発明の第１の実施の形態に係
る薄板連続鋳造装置１０、及び、それを用いた薄板連続
鋳造方法と、同様の効果が得られる他、連続鋳造操業
中、薄板１５の板幅を変更することができるので、目的
幅の薄板１５を連続鋳造することができると共に、従来
のスリッタ等による切断工程を省略、或いは薄板１５の
端部のトリミング量を減少することができ、安価な薄板
１５を連続鋳造することができる。As described above, according to the thin plate continuous casting apparatus 40 and the thin plate continuous casting method using the same according to the fourth embodiment of the present invention, the first embodiment of the present invention is described. The same effects as the thin plate continuous casting apparatus 10 and the thin plate continuous casting method using the same can be obtained, and the plate width of the thin plate 15 can be changed during the continuous casting operation. In addition to being capable of continuous casting, it is possible to omit the conventional cutting process using a slitter or the like, or reduce the trimming amount of the end portion of the thin plate 15, so that the inexpensive thin plate 15 can be continuously cast.

【０１０６】また、一対の短辺堰１２ｂの上部を、一対
の長辺堰１２ａの側線方向に沿って、所定量移動した
後、一対の短辺堰１２ｂの下部を、一対の長辺堰１２ａ
の側線方向に沿って、所定量移動して板幅を縮小する一
方、一対の短辺堰１２ｂの下部を、一対の長辺堰１２ａ
の側線方向に沿って、所定量移動した後、一対の短辺堰
１２ｂの上部を、一対の長辺堰１２ａの側線方向に沿っ
て、所定量移動して板幅を拡大したので、例えば、一対
の短辺堰１２ｂを、鉛直状態で平行移動させる場合に比
べ、湯溜部１３内の溶融金属１４が、激しく揺動するの
を防止することができ、従来のように、薄板１５の表面
性状が悪化するのを防止して、薄板１５の板幅を容易に
変更することができる。After moving the upper portions of the pair of short side weirs 12b by a predetermined amount along the lateral direction of the pair of long side weirs 12a, the lower portions of the pair of short side weirs 12b are moved to the pair of long side weirs 12a.
The plate width is reduced by moving a predetermined amount along the lateral line direction of the pair of short side weirs 12a, while the lower portions of the pair of short side weirs 12b are connected to each other.
After moving a predetermined amount along the lateral line direction, the upper part of the pair of short-side weirs 12b is moved by a predetermined amount along the lateral line direction of the pair of long-side weirs 12a to expand the plate width. Compared with the case where the pair of short-side weirs 12b are moved in parallel in the vertical state, the molten metal 14 in the hot water reservoir 13 can be prevented from vibrating violently, and the surface of the thin plate 15 can be prevented as in the conventional case. The width of the thin plate 15 can be easily changed by preventing deterioration of the properties.

【０１０７】すなわち、例えば、図１１（ｂ）に示すよ
うに、一対の短辺堰１２ｂ′を、鉛直状態で平行移動さ
せる（すなわち、図１１（ｂ）中、破線の状態から、実
線の状態に移動する）場合は、一対の短辺堰１２ｂ′の
移動に伴って、湯溜部１３′内に貯留された溶融金属１
４が、図１１（ｂ）中、矢視する方向に激しく揺動し
て、薄板１５の表面性状が悪化する虞れがあったが、前
記の如く、一対の短辺堰１２ｂを傾斜動させる（すなわ
ち、図１１（ａ）中、破線の状態から、実線の状態に移
動する）と、一対の短辺堰１２ｂの移動速度等にも依る
が、図１１（ａ）に示すように、溶融金属１４を、図１
１（ａ）中、矢視する如く、テーパー面に沿わせること
ができ、前記のような激しい揺動を防止することができ
るので、薄板１５の表面性状が悪化するのを防止するこ
とができる。That is, for example, as shown in FIG. 11 (b), the pair of short-side weirs 12b 'are moved in parallel in the vertical state (that is, in FIG. 11 (b), from the state of the broken line to the state of the solid line). When the molten metal 1 stored in the molten metal reservoir 13 ′ is moved along with the movement of the pair of short side weirs 12b ′,
11 may vibrate violently in the direction of the arrow in FIG. 11 (b), deteriorating the surface quality of the thin plate 15. However, as described above, the pair of short side dams 12b are tilted. (That is, in FIG. 11A, the state of the broken line moves to the state of the solid line) and the moving speed of the pair of short-side weirs 12b, etc., but as shown in FIG. The metal 14 is shown in FIG.
1 (a), it can be along the tapered surface as seen from the arrow, and it is possible to prevent the above-mentioned violent swinging, so that it is possible to prevent the surface quality of the thin plate 15 from being deteriorated. .

【０１０８】また、板幅を縮小する板幅変更、又は、板
幅を拡大する板幅変更の、いずれの場合においても、板
幅変更時に、溶融金属１４の湯面と、一対の鋳造ロール
１１の外周面の接点で生成された、極めて軟弱な初期凝
固シェル１５ａや、一対の鋳造ロール１１の外周面に沿
って、次第に、その厚さを増す凝固シェル１５ａに、大
きな応力をかけるのを防止して、板幅の拡縮を可能とす
ることができ、薄板１５の破断や割れ等を抑制すること
ができる。In either case of changing the plate width to reduce the plate width or changing the plate width to increase the plate width, the molten metal 14 and the pair of casting rolls 11 are changed at the time of changing the plate width. It is possible to prevent a large stress from being applied to the extremely soft initial solidified shell 15a generated at the contact points on the outer peripheral surface of the solidified shell and the solidified shell 15a whose thickness gradually increases along the outer peripheral surface of the pair of casting rolls 11. As a result, the plate width can be expanded / contracted, and breakage or cracking of the thin plate 15 can be suppressed.

【０１０９】さらに、板幅を縮小する板幅変更の、第１
傾斜動工程における、一対の短辺堰１２ｂの傾斜角度
（γ）、又は、板幅を拡大する板幅変更の、第１傾斜動
工程における、一対の短辺堰１２ｂの傾斜角度（γ′）
が大きい場合、一対の短辺堰１２ｂの内面から、凝固核
や凝固シェル１５ａが剥離し易くなって、一対の短辺堰
１２ｂの内面と薄板１５の間に、いわゆるエアーギャッ
プと呼ばれるすきまが発生する虞れがあるが、板幅を縮
小する板幅変更の、第１傾斜動工程、終了時や、板幅を
拡大する板幅変更の、第１傾斜動工程、終了時におけ
る、一対の短辺堰１２ｂの内面の、鉛直方向に対する傾
斜角度（λ）を、約１．１４６°以下とすることによ
り、エアーギャップの発生を防止することができる。ま
た、一対の短辺堰１２ｂの移動速度（ＶC ）を、４０ｍ
ｍ／ｍｉｎ≦ＶC ≦２００ｍｍ／ｍｉｎの範囲内にする
ことにより、良好な表面性状を有する薄板１５を連続鋳
造することができる。Furthermore, the first of the plate width changes for reducing the plate width
Inclination angle (γ) of the pair of short side weirs 12b in the inclining process, or inclination angle (γ ′) of the pair of short side weirs 12b in the first inclining process of changing the plate width to expand the plate width.
When it is large, the solidification nuclei and the solidification shells 15a are easily separated from the inner surfaces of the pair of short side weirs 12b, and a so-called air gap is generated between the inner surfaces of the pair of short side weirs 12b and the thin plate 15. However, there is a possibility that the pair of short lengths at the end of the first tilting process of changing the plate width for reducing the plate width and at the end of the first tilting process of changing the plate width for expanding the plate width. By setting the inclination angle (λ) of the inner surface of the side dam 12b with respect to the vertical direction to about 1.146 ° or less, it is possible to prevent the occurrence of an air gap. In addition, the moving speed (V C ) of the pair of short-side weirs 12b is 40 m
By setting m / min ≦ V C ≦ 200 mm / min, it is possible to continuously cast the thin plate 15 having good surface properties.

【０１１０】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、他の薄板連続鋳造方法
について説明する。 （実施例１０）まず、前記実施例１と同様にして、板厚
２ｍｍの、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、鋳造速度６０ｍ／ｍｉｎで
連続鋳造し始めた。そして、連続操業中、薄板１５の板
幅変更を実施した。以下、薄板１５の板幅を変更する、
他の板幅変更方法について、説明する。Next, another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention will be described. (Embodiment 10) First, in the same manner as in Embodiment 1, stainless steel with a plate thickness of 2 mm and a chromium content of 18 wt% (S
The thin plate 15 of US304) was started to be continuously cast at a casting speed of 60 m / min. Then, the plate width of the thin plate 15 was changed during the continuous operation. Hereafter, the width of the thin plate 15 is changed,
Another plate width changing method will be described.

【０１１１】初めに、薄板１５の板幅を縮小する、板幅
変更方法について、説明する。まず、前記実施例８と同
様にして、制御部が、一対の短辺堰１２ｂを、一対の長
辺堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同
士を近接する方向（以下、図１２（ａ）〜（ｃ）中、矢
視Ｃ方向という）に移動させる、板幅縮小信号を、供給
装置に出力する。次に、供給装置が、前記実施例８と同
様にして、下方の直線駆動手段３１ａのロッド部３１ｂ
を、図１２（ａ）中、矢視Ｃ方向に、所定量移動させる
ことにより、一対の短辺堰１２ｂは、その上部を回動中
心として、反時計周りに所定僅少角度（δ）回動され、
一対の短辺堰１２ｂの外面は、図１２（ｂ）中、矢視Ｃ
方向に、所定僅少角度（δ）傾斜される（第１傾斜動工
程）。First, a plate width changing method for reducing the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit moves the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a so that the pair of short side weirs 12b approach each other (hereinafter, A plate width reduction signal that is moved in the direction of arrow C in FIGS. 12A to 12C is output to the supply device. Next, in the same manner as in the eighth embodiment, the feeding device uses the rod portion 31b of the lower linear drive means 31a.
12A, by moving a predetermined amount in the direction of arrow C, the pair of short-side weirs 12b rotate counterclockwise by a predetermined small angle (δ) with the upper part thereof as the rotation center. Is
The outer surfaces of the pair of short side weirs 12b are shown by arrow C in FIG.
Direction is tilted by a predetermined slight angle (δ) (first tilting motion step).

【０１１２】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、上方の直線駆
動手段３１ａのロッド部３１ｂを、図１２（ｂ）中、矢
視Ｃ方向に所定量移動させることにより、一対の短辺堰
１２ｂは、その下部を回動中心として、時計周りに所定
僅少角度（δ′）回動され、一対の短辺堰１２ｂの外面
は、図１２（ｃ）中、矢視Ｃ方向に、所定僅少角度
（δ′）傾斜される（第２傾斜動工程）。これにより、
連続鋳造される薄板１５の板幅を縮小する、板幅変更を
完了する。Next, the feeding device detects the end of the first tilting process and, as in the eighth embodiment, moves the rod portion 31b of the upper linear driving means 31a to the position shown in FIG. By moving the pair of short side weirs 12b by a predetermined amount in the direction of arrow C, the pair of short side weirs 12b is rotated clockwise by a predetermined slight angle (δ ′) about the lower portion thereof, and the outer surfaces of the pair of short side weirs 12b are rotated. Is tilted in the direction of arrow C in FIG. 12C by a predetermined slight angle (δ ′) (second tilting step). This allows
The plate width change for reducing the plate width of the continuously cast thin plate 15 is completed.

【０１１３】次に、薄板１５の板幅を拡大する、板幅変
更方法について、説明する。まず、前記実施例８と同様
にして、制御部が、一対の短辺堰１２ｂを、一対の長辺
堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同士
を離反する方向（以下、図１２（ａ）〜（ｃ）中、矢視
Ｃ′方向という）に移動させる、板幅拡大信号を、供給
装置に出力する。そして、供給装置が、前記と逆の動作
を行って、上方の直線駆動手段３１ａのロッド部３１ｂ
を、図１２（ｃ）中、矢視Ｃ′方向に所定量移動させる
ことにより、一対の短辺堰１２ｂは、その下部を回動中
心として、反時計周りに所定僅少角度（δ′）回動さ
れ、一対の短辺堰１２ｂの外面は、図１２（ｂ）中、矢
視Ｃ′方向に、所定僅少角度（δ′）傾斜される（第１
傾斜動工程）。Next, a plate width changing method for enlarging the plate width of the thin plate 15 will be described. First, in the same way as in Example 8, the control unit separates the pair of short side weirs 12b from each other along the lateral direction of the pair of long side weirs 12a (hereinafter, 12A to 12C, the plate width enlargement signal to be moved in the arrow C'direction) is output to the supply device. Then, the supply device performs the opposite operation to the above, and the rod portion 31b of the upper linear drive means 31a is performed.
12C, by moving a predetermined amount in the direction of arrow C ′, the pair of short-side weirs 12b rotate counterclockwise by a predetermined small angle (δ ′) with the lower part thereof as the center of rotation. The outer surfaces of the pair of short-side weirs 12b are tilted in the direction of arrow C ′ in FIG. 12B by a predetermined slight angle (δ ′) (first).
Tilting process).

【０１１４】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、前記と逆の動
作を行って、下方の直線駆動手段３１ａのロッド部３１
ｂを、図１２（ｂ）中、矢視Ｃ′方向に所定量移動させ
ることにより、一対の短辺堰１２ｂは、その上部を回動
中心として、時計周りに所定僅少角度（δ）回動され、
一対の短辺堰１２ｂの外面は、図１２（ａ）中、矢視
Ｃ′方向に、所定僅少角度（δ）傾斜される（第２傾斜
動工程）。これにより、連続鋳造される薄板１５の板幅
を拡大する、板幅変更を完了する。Next, in the same manner as in the eighth embodiment, the supply device detects the end of the first tilting motion step and performs the reverse operation to the above, and the rod portion 31 of the lower linear drive means 31a.
By moving b in the direction of arrow C ′ in FIG. 12 (b) by a predetermined amount, the pair of short side dams 12b rotate clockwise by a predetermined small angle (δ) with the upper part thereof as the center of rotation. Is
The outer surfaces of the pair of short side weirs 12b are tilted by a predetermined slight angle (δ) in the direction of arrow C ′ in FIG. 12 (a) (second tilting step). As a result, the plate width change for expanding the plate width of the continuously cast thin plate 15 is completed.

【０１１５】なお、前記実施例１０では、前記実施例１
と同様に、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、連続鋳造する場合につい
て、説明したが、前記実施例２と同様に、カーボン含有
量０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の薄板１５
を、連続鋳造する場合についても、同様に板幅変更する
ことができる。In addition, in the tenth embodiment, the first embodiment.
Similarly, stainless steel with a chromium content of 18 wt% (S
The case of continuously casting the thin plate 15 of US304) has been described, but the thin plate 15 of carbon steel having a carbon content of 0.03 wt% to 0.10 wt% is similar to the second embodiment.
In the case of continuously casting, the plate width can be similarly changed.

【０１１６】以上のように、本発明の第４の実施の形態
に係る薄板連続鋳造装置４０を用いた、他の薄板連続鋳
造方法によれば、一対の短辺堰１２ｂの下部を、一対の
長辺堰１２ａの側線方向に沿って、所定量移動した後、
一対の短辺堰１２ｂの上部を、一対の長辺堰１２ａの側
線方向に沿って、所定量移動して板幅を縮小する一方、
一対の短辺堰１２ｂの上部を、一対の長辺堰１２ａの側
線方向に沿って、所定量移動した後、一対の短辺堰１２
ｂの下部を、一対の長辺堰１２ａの側線方向に沿って、
所定量移動して板幅を拡大したので、本発明の第４の実
施の形態に係る薄板連続鋳造装置４０を用いた薄板連続
鋳造方法と同様に、例えば、一対の短辺堰１２ｂを、鉛
直状態で平行移動させる場合等に比べ、湯溜部１３内の
溶融金属１４が激しく揺動するのを防止することがで
き、従来のように、薄板１５の表面性状が悪化するのを
防止して、薄板１５の板幅を容易に変更することができ
る。As described above, according to another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, the lower portions of the pair of short side weirs 12b are provided with a pair of short side dams. After moving a predetermined amount along the lateral direction of the long side weir 12a,
While moving the upper portion of the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a by a predetermined amount to reduce the plate width,
After moving the upper portion of the pair of short-side weirs 12b along the lateral direction of the pair of long-side weirs 12a by a predetermined amount, the pair of short-side weirs 12b
the lower part of b along the lateral direction of the pair of long side weirs 12a,
Since the plate width is expanded by moving by a predetermined amount, for example, as in the thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, for example, a pair of short side weirs 12b are vertically The molten metal 14 in the basin 13 can be prevented from violently oscillating, as compared with the case of parallel movement in the state, and the deterioration of the surface quality of the thin plate 15 as in the conventional case can be prevented. The plate width of the thin plate 15 can be easily changed.

【０１１７】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、更に他の薄板連続鋳造
方法について説明する。 （実施例１１）まず、前記実施例１と同様にして、板厚
２ｍｍの、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、鋳造速度６０ｍ／ｍｉｎで
連続鋳造し始めた。そして、連続操業中、薄板１５の板
幅変更を実施した。以下、薄板１５の板幅を変更する、
更に他の板幅変更方法について、説明する。Next, still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention will be described. (Embodiment 11) First, in the same manner as in Embodiment 1, stainless steel (S having a thickness of 2 mm and a chromium content of 18 wt% (S
The thin plate 15 of US304) was started to be continuously cast at a casting speed of 60 m / min. Then, the plate width of the thin plate 15 was changed during the continuous operation. Hereafter, the width of the thin plate 15 is changed,
Still another plate width changing method will be described.

【０１１８】初めに、薄板１５の板幅を縮小する、板幅
変更方法について、説明する。まず、前記実施例８と同
様にして、制御部が、一対の短辺堰１２ｂを、一対の長
辺堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同
士を近接する方向（以下、図１３（ａ）〜（ｄ）中、矢
視Ｄ方向という）に移動させる、板幅縮小信号を、供給
装置に出力する。次に、供給装置が、前記実施例８と同
様にして、上方の直線駆動手段３１ａのロッド部３１ｂ
を、図１３（ａ）中、矢視Ｄ方向に、所定量移動させる
ことにより、一対の短辺堰１２ｂは、その下部を回動中
心として、時計周りに所定僅少角度（ε）回動され、一
対の短辺堰１２ｂの外面は、図１３（ｂ）中、矢視Ｄ方
向に、所定僅少角度（ε）傾斜される（第１傾斜動工
程）。First, a plate width changing method for reducing the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit moves the pair of short-side weirs 12b along the lateral direction of the pair of long-side weirs 12a so that the pair of short-side weirs 12b approach each other (hereinafter, A plate width reduction signal for moving in the direction of arrow D in FIGS. 13A to 13D is output to the supply device. Next, in the same manner as in the eighth embodiment, the feeding device uses the rod portion 31b of the upper linear drive means 31a.
13A, the pair of short side weirs 12b is rotated clockwise by a predetermined small angle (ε) with the lower part thereof as a rotation center by moving the pair of short side weirs 12b by a predetermined amount in the arrow D direction. The outer surfaces of the pair of short-side weirs 12b are tilted by a predetermined slight angle (ε) in the direction of arrow D in FIG. 13B (first tilting step).

【０１１９】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、下方の直線駆
動手段３１ａのロッド部３１ｂを、図１３（ｂ）中、矢
視Ｄ方向に所定量移動させることにより、一対の短辺堰
１２ｂは、その上部を回動中心として、反時計周りに所
定僅少角度（ε′）回動され、一対の短辺堰１２ｂの外
面は、図１３（ｃ）中、矢視Ｄ方向に、所定僅少角度
（ε′）傾斜される（第２傾斜動工程）。さらに、供給
装置は、前記実施例８と同様にして、第２傾斜動工程の
終了を検知して、上方の直線駆動手段３１ａのロッド部
３１ｂを、図１３（ｃ）中、矢視Ｄ方向に所定量移動さ
せることにより、一対の短辺堰１２ｂは、その下部を回
動中心として、時計周りに所定僅少角度（ε″）回動さ
れ、一対の短辺堰１２ｂの外面は、図１３（ｄ）中、矢
視Ｄ方向に、所定僅少角度（ε″）傾斜される（繰り返
された第１傾斜動工程を、以下第３傾斜動工程とい
う）。これにより、連続鋳造される薄板１５の板幅を縮
小する、板幅変更を完了する。Then, the feeding device detects the end of the first tilting step and detects the rod portion 31b of the lower linear drive means 31a as shown in FIG. By moving the pair of short side weirs 12b by a predetermined amount in the direction of the arrow D, the pair of short side weirs 12b are rotated counterclockwise by a predetermined slight angle (ε ') with the upper part thereof as the center of rotation, and the pair of short side weirs 12b. The outer surface is tilted by a predetermined slight angle (ε ') in the direction of arrow D in FIG. 13C (second tilting step). Further, the supply device detects the end of the second tilting process and moves the rod portion 31b of the upper linear drive means 31a to the direction of arrow D in FIG. 13 (c) in the same manner as in the eighth embodiment. By moving the pair of short side weirs 12b by a predetermined amount, the pair of short side weirs 12b is rotated clockwise by a predetermined small angle (ε ″) about the lower portion thereof, and the outer surfaces of the pair of short side weirs 12b are shown in FIG. In (d), a predetermined slight angle (ε ″) is tilted in the direction D in the direction of the arrow (the repeated first tilting motion step is hereinafter referred to as the third tilting motion step). This completes the plate width change for reducing the plate width of the continuously cast thin plate 15.

【０１２０】次に、薄板１５の板幅を拡大する、板幅変
更方法について、説明する。まず、前記実施例８と同様
にして、制御部が、一対の短辺堰１２ｂを、一対の長辺
堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同士
を離反する方向（以下、図１３（ａ）〜（ｄ）中、矢視
Ｄ′方向という）に移動させる、板幅拡大信号を、供給
装置に出力する。そして、供給装置が、前記と逆の動作
を行って、上方の直線駆動手段３１ａのロッド部３１ｂ
を、図１３（ｄ）中、矢視Ｄ′方向に所定量移動させる
ことにより、一対の短辺堰１２ｂは、その下部を回動中
心として、反時計周りに所定僅少角度（ε″）回動さ
れ、一対の短辺堰１２ｂの外面は、図１３（ｃ）中、矢
視Ｄ′方向に、所定僅少角度（ε′）傾斜される（第１
傾斜動工程）。Next, a plate width changing method for expanding the plate width of the thin plate 15 will be described. First, in the same way as in Example 8, the control unit separates the pair of short side weirs 12b from each other along the lateral direction of the pair of long side weirs 12a (hereinafter, 13A to 13D, a plate width enlargement signal to be moved in the arrow D'direction) is output to the supply device. Then, the supply device performs the opposite operation to the above, and the rod portion 31b of the upper linear drive means 31a is performed.
13D, by moving a predetermined amount in the direction of the arrow D ′, the pair of short-side weirs 12b rotate counterclockwise by a predetermined small angle (ε ″) about the lower part thereof as the center of rotation. The outer surfaces of the pair of short-side weirs 12b are moved and tilted in the direction of the arrow D ′ in FIG. 13 (c) by a predetermined slight angle (ε ′) (first).
Tilting process).

【０１２１】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、前記と逆の動
作を行って、下方の直線駆動手段３１ａのロッド部３１
ｂを、図１３（ｃ）中、矢視Ｄ′方向に所定量移動させ
ることにより、一対の短辺堰１２ｂは、その上部を回動
中心として、時計周りに所定僅少角度（ε′）回動さ
れ、一対の短辺堰１２ｂの外面は、図１３（ｂ）中、矢
視Ｄ′方向に、所定僅少角度（ε′）傾斜される（第２
傾斜動工程）。さらに、供給装置は、前記実施例８と同
様にして、第２傾斜動工程の終了を検知して、前記と逆
の動作を行って、上方の直線駆動手段３１ａのロッド部
３１ｂを、図１３（ｂ）中、矢視Ｄ′方向に所定量移動
させることにより、一対の短辺堰１２ｂは、その下部を
回動中心として、反時計周りに所定僅少角度（ε）回動
され、一対の短辺堰１２ｂの外面は、図１３（ａ）中、
矢視Ｄ′方向に、所定僅少角度（ε）傾斜される（繰り
返された第１傾斜動工程を、以下第３傾斜動工程とい
う）。これにより、連続鋳造される薄板１５の板幅を拡
大する、板幅変更を完了する。Next, in the same manner as in the eighth embodiment, the supply device detects the end of the first tilting step and performs the reverse operation to the above, and the rod portion 31 of the lower linear drive means 31a.
By moving b in the direction of the arrow D ′ in FIG. 13 (c) by a predetermined amount, the pair of short-side dams 12b rotate clockwise about a predetermined small angle (ε ′) around the upper part thereof. The outer surfaces of the pair of short-side weirs 12b are moved and tilted in the direction of the arrow D ′ in FIG. 13 (b) by a predetermined slight angle (ε ′) (second).
Tilting process). Further, the supply device detects the end of the second tilting process and performs the operation opposite to the above, in the same manner as in the eighth embodiment, to move the rod portion 31b of the upper linear drive means 31a to the position shown in FIG. By moving a predetermined amount in the direction of arrow D'in (b), the pair of short-side weirs 12b are rotated counterclockwise by a predetermined small angle (ε) about the lower portion of the weir 12b, and the pair of short-side weirs 12b are rotated. The outer surface of the short side weir 12b is shown in FIG.
It is tilted by a predetermined slight angle (ε) in the direction of the arrow D '(the repeated first tilting motion step is hereinafter referred to as the third tilting motion step). As a result, the plate width change for expanding the plate width of the continuously cast thin plate 15 is completed.

【０１２２】なお、前記実施例１１では、前記実施例１
と同様に、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、連続鋳造する場合につい
て、説明したが、前記実施例２と同様に、カーボン含有
量０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の薄板１５
を、連続鋳造する場合についても、同様に板幅変更する
ことができる。In the eleventh embodiment, the first embodiment is the same as the first embodiment.
Similarly, stainless steel with a chromium content of 18 wt% (S
The case of continuously casting the thin plate 15 of US304) has been described, but the thin plate 15 of carbon steel having a carbon content of 0.03 wt% to 0.10 wt% is similar to the second embodiment.
In the case of continuously casting, the plate width can be similarly changed.

【０１２３】以上のように、本発明の第４の実施の形態
に係る薄板連続鋳造装置４０を用いた、更に他の薄板連
続鋳造方法によれば、一対の短辺堰１２ｂの上部を、一
対の長辺堰１２ａの側線方向に沿って、所定量移動した
後、一対の短辺堰１２ｂの下部を、一対の長辺堰１２ａ
の側線方向に沿って、所定量移動し、さらに、その後、
一対の短辺堰１２ｂの上部を、一対の長辺堰１２ａの側
線方向に沿って、所定量移動して板幅を縮小する一方、
一対の短辺堰１２ｂの上部を、一対の長辺堰１２ａの側
線方向に沿って、所定量移動した後、一対の短辺堰１２
ｂの下部を、一対の長辺堰１２ａの側線方向に沿って、
所定量移動し、さらに、その後、一対の短辺堰１２ｂの
上部を、一対の長辺堰１２ａの側線方向に沿って、所定
量移動して板幅を拡大したので、本発明の第４の実施の
形態に係る薄板連続鋳造装置４０を用いた前記薄板連続
鋳造方法と同様に、例えば、一対の短辺堰１２ｂを、鉛
直状態で平行移動させる場合等に比べ、湯溜部１３内の
溶融金属１４が激しく揺動するのを防止することがで
き、従来のように、薄板１５の表面性状が悪化するのを
防止して、薄板１５の板幅を容易に変更することができ
る。As described above, according to still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, the pair of short side weirs 12b are provided with a pair of upper parts. After moving a predetermined amount along the lateral direction of the long side weir 12a, the lower part of the pair of short side weirs 12b is moved to the pair of long side weirs 12a.
Along the lateral direction of, move a predetermined amount, and then,
While moving the upper portion of the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a by a predetermined amount to reduce the plate width,
After moving the upper portion of the pair of short-side weirs 12b along the lateral direction of the pair of long-side weirs 12a by a predetermined amount, the pair of short-side weirs 12b
the lower part of b along the lateral direction of the pair of long side weirs 12a,
After moving a predetermined amount, and then further moving the upper portion of the pair of short-side weirs 12b along the lateral direction of the pair of long-side weirs 12a by a predetermined amount to expand the plate width, the fourth aspect of the present invention Similar to the thin plate continuous casting method using the thin plate continuous casting device 40 according to the embodiment, for example, as compared with a case where a pair of short side weirs 12b are moved in parallel in a vertical state, melting in the molten metal reservoir 13 It is possible to prevent the metal 14 from vibrating violently, prevent deterioration of the surface quality of the thin plate 15 as in the conventional case, and easily change the plate width of the thin plate 15.

【０１２４】また、板幅を縮小する板幅変更の、第１傾
斜動工程における、一対の短辺堰１２ｂの傾斜角度
（ε）、又は、板幅を拡大する板幅変更の、第２傾斜動
工程における、一対の短辺堰１２ｂの傾斜角度（ε′）
が大きい場合、前記と同様に、エアーギャップが発生す
る虞れがあるが、やはり、前記と同様に、板幅を縮小す
る板幅変更の、第１傾斜動工程、終了時や、板幅を拡大
する板幅変更の、第２傾斜動工程、終了時における、一
対の短辺堰１２ｂの内面の、鉛直方向に対する傾斜角度
（λ）を、約１．１４６°以下とすることにより、エア
ーギャップの発生を防止することができる。Further, the inclination angle (ε) of the pair of short side dams 12b in the first tilting motion step of changing the board width for reducing the board width, or the second tilting for changing the board width to increase the board width. Inclination angle (ε ') of the pair of short side weirs 12b in the moving process
If it is large, there is a possibility that an air gap will be generated as described above, but again, similarly to the above, the first tilting step of changing the plate width to reduce the plate width, at the end, and when the plate width is changed. By setting the inclination angle (λ) of the inner surfaces of the pair of short side weirs 12b with respect to the vertical direction at the end of the second tilting step of the expanding plate width change to about 1.146 ° or less, the air gap Can be prevented.

【０１２５】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、更に他の薄板連続鋳造
方法について説明する。 （実施例１２）まず、前記実施例１と同様にして、板厚
２ｍｍの、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、鋳造速度６０ｍ／ｍｉｎで
連続鋳造し始めた。そして、連続操業中、薄板１５の板
幅変更を実施した。以下、薄板１５の板幅を変更する、
更に他の板幅変更方法について、説明する。Next, still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention will be described. (Embodiment 12) First, in the same manner as in Embodiment 1, stainless steel (S having a thickness of 2 mm and a chromium content of 18 wt% (S
The thin plate 15 of US304) was started to be continuously cast at a casting speed of 60 m / min. Then, the plate width of the thin plate 15 was changed during the continuous operation. Hereafter, the width of the thin plate 15 is changed,
Still another plate width changing method will be described.

【０１２６】初めに、薄板１５の板幅を縮小する、板幅
変更方法について、説明する。まず、前記実施例８と同
様にして、制御部が、一対の短辺堰１２ｂを、一対の長
辺堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同
士を近接する方向（以下、図１４（ａ）〜（ｄ）中、矢
視Ｅ方向という）に移動させる、板幅縮小信号を、供給
装置に出力する。次に、供給装置が、前記実施例８と同
様にして、下方の直線駆動手段３１ａのロッド部３１ｂ
を、図１４（ａ）中、矢視Ｅ方向に、所定量移動させる
ことにより、一対の短辺堰１２ｂは、その上部を回動中
心として、反時計周りに所定僅少角度（ζ）回動され、
一対の短辺堰１２ｂの外面は、図１４（ｂ）中、矢視Ｅ
方向に、所定僅少角度（ζ）傾斜される（第１傾斜動工
程）。First, a plate width changing method for reducing the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit moves the pair of short-side weirs 12b along the lateral direction of the pair of long-side weirs 12a so that the pair of short-side weirs 12b approach each other (hereinafter, 14A to 14D, a plate width reduction signal that is moved in the arrow E direction) is output to the supply device. Next, in the same manner as in the eighth embodiment, the feeding device uses the rod portion 31b of the lower linear drive means 31a.
14A, by moving a predetermined amount in the direction of arrow E, the pair of short-side weirs 12b rotate counterclockwise by a predetermined small angle (ζ) with the upper part thereof as the rotation center. Is
The outer surfaces of the pair of short-side weirs 12b have an arrow E in FIG. 14 (b).
Direction is tilted by a predetermined slight angle (ζ) (first tilting motion step).

【０１２７】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、上方の直線駆
動手段３１ａのロッド部３１ｂを、図１４（ｂ）中、矢
視Ｅ方向に所定量移動させることにより、一対の短辺堰
１２ｂは、その下部を回動中心として、時計周りに所定
僅少角度（ζ′）回動され、一対の短辺堰１２ｂの外面
は、図１４（ｃ）中、矢視Ｅ方向に、所定僅少角度
（ζ′）傾斜される（第２傾斜動工程）。さらに、供給
装置は、前記実施例８と同様にして、第２傾斜動工程の
終了を検知して、下方の直線駆動手段３１ａのロッド部
３１ｂを、図１４（ｃ）中、矢視Ｅ方向に所定量移動さ
せることにより、一対の短辺堰１２ｂは、その上部を回
動中心として、反時計周りに所定僅少角度（ζ″）回動
され、一対の短辺堰１２ｂの外面は、図１４（ｄ）中、
矢視Ｅ方向に、所定僅少角度（ζ″）傾斜される（繰り
返された第１傾斜動工程を、以下第３傾斜動工程とい
う）。これにより、連続鋳造される薄板１５の板幅を縮
小する、板幅変更を完了する。Next, the feeding device detects the end of the first tilting process and, in the same manner as in the eighth embodiment, moves the rod portion 31b of the upper linear drive means 31a to the position shown in FIG. By moving the pair of short side weirs 12b by a predetermined amount in the direction of arrow E, the pair of short side weirs 12b is rotated clockwise by a predetermined slight angle (ζ ') with the lower part as the center of rotation, and the outer surfaces of the pair of short side weirs 12b are rotated. 14C is tilted in the direction of the arrow E in FIG. 14C by a predetermined slight angle (ζ ') (second tilting step). Further, the supply device detects the end of the second tilting process and moves the rod portion 31b of the lower linear drive means 31a to the direction of arrow E in FIG. By moving the pair of short-side weirs 12b by a predetermined amount, the pair of short-side weirs 12b are rotated counterclockwise by a predetermined small angle (ζ ″) about the upper portion thereof, and the outer surfaces of the pair of short-side weirs 12b are In 14 (d),
It is tilted by a predetermined small angle (ζ ″) in the direction of arrow E (the repeated first tilting motion step is hereinafter referred to as the third tilting motion step), thereby reducing the plate width of the continuously cast thin plate 15. Yes, complete the board width change.

【０１２８】次に、薄板１５の板幅を拡大する、板幅変
更方法について、説明する。まず、前記実施例８と同様
にして、制御部が、一対の短辺堰１２ｂを、一対の長辺
堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同士
を離反する方向（以下、図１４（ａ）〜（ｄ）中、矢視
Ｅ′方向という）に移動させる、板幅拡大信号を、供給
装置に出力する。そして、供給装置が、前記と逆の動作
を行って、下方の直線駆動手段３１ａのロッド部３１ｂ
を、図１４（ｄ）中、矢視Ｅ′方向に所定量移動させる
ことにより、一対の短辺堰１２ｂは、その上部を回動中
心として、時計周りに所定僅少角度（ζ″）回動され、
一対の短辺堰１２ｂの外面は、図１４（ｃ）中、矢視
Ｅ′方向に、所定僅少角度（ζ″）傾斜される（第１傾
斜動工程）。Next, a plate width changing method for expanding the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit separates the pair of short-side weirs 12b from each other along the lateral direction of the pair of long-side weirs 12a (hereinafter, 14A to 14D, the plate width enlargement signal for moving in the arrow E'direction) is output to the supply device. Then, the supply device performs the reverse operation to the above, and the rod portion 31b of the lower linear drive means 31a.
14D, the pair of short side weirs 12b is rotated clockwise by a predetermined small angle (ζ ″) about the upper part thereof as a rotation center by moving the pair of short side weirs 12b by a predetermined amount in the arrow E ′ direction. Is
The outer surfaces of the pair of short-side weirs 12b are tilted in the direction of arrow E ′ in FIG. 14C by a predetermined slight angle (ζ ″) (first tilting step).

【０１２９】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、前記と逆の動
作を行って、上方の直線駆動手段３１ａのロッド部３１
ｂを、図１４（ｃ）中、矢視Ｅ′方向に所定量移動させ
ることにより、一対の短辺堰１２ｂは、その下部を回動
中心として、反時計周りに所定僅少角度（ζ′）回動さ
れ、一対の短辺堰１２ｂの外面は、図１４（ｂ）中、矢
視Ｅ′方向に、所定僅少角度（ζ′）傾斜される（第２
傾斜動工程）。さらに、供給装置は、前記実施例８と同
様にして、第２傾斜動工程の終了を検知して、前記と逆
の動作を行って、下方の直線駆動手段３１ａのロッド部
３１ｂを、図１４（ｂ）中、矢視Ｅ′方向に所定量移動
させることにより、一対の短辺堰１２ｂは、その上部を
回動中心として、時計周りに所定僅少角度（ζ）回動さ
れ、一対の短辺堰１２ｂの外面は、図１４（ａ）中、矢
視Ｅ′方向に、所定僅少角度（ζ）傾斜される（繰り返
された第１傾斜動工程を、以下第３傾斜動工程とい
う）。これにより、連続鋳造される薄板１５の板幅を拡
大する、板幅変更を完了する。Next, in the same manner as in the eighth embodiment, the feeding device detects the end of the first tilting motion and performs the reverse operation to the above, and the rod portion 31 of the upper linear drive means 31a.
By moving b in the direction of arrow E ′ in FIG. 14 (c) by a predetermined amount, the pair of short side dams 12b rotate counterclockwise by a predetermined small angle (ζ ′) with the lower part thereof as the center of rotation. The outer surfaces of the pair of short side weirs 12b are rotated, and are inclined by a predetermined small angle (ζ ') in the arrow E'direction in FIG. 14B (second).
Tilting process). Further, the supply device detects the end of the second tilting process and performs the operation opposite to the above in the same manner as in the eighth embodiment, and moves the rod portion 31b of the lower linear drive means 31a to the position shown in FIG. By moving a predetermined amount in the direction of arrow E ′ in (b), the pair of short side weirs 12b is rotated clockwise by a predetermined small angle (ζ) with the upper part thereof as a rotation center, and the pair of short side weirs 12b is rotated. The outer surface of the side weir 12b is tilted by a predetermined small angle (ζ) in the arrow E ′ direction in FIG. 14A (the repeated first tilting motion step is hereinafter referred to as the third tilting motion step). As a result, the plate width change for expanding the plate width of the continuously cast thin plate 15 is completed.

【０１３０】なお、前記実施例１２では、前記実施例１
と同様に、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、連続鋳造する場合につい
て、説明したが、前記実施例２と同様に、カーボン含有
量０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の薄板１５
を、連続鋳造する場合についても、同様に板幅変更する
ことができる。In the twelfth embodiment, the first embodiment is the same as the first embodiment.
Similarly, stainless steel with a chromium content of 18 wt% (S
The case of continuously casting the thin plate 15 of US304) has been described, but the thin plate 15 of carbon steel having a carbon content of 0.03 wt% to 0.10 wt% is similar to the second embodiment.
In the case of continuously casting, the plate width can be similarly changed.

【０１３１】以上のように、本発明の第４の実施の形態
に係る薄板連続鋳造装置４０を用いた更に他の薄板連続
鋳造方法によれば、一対の短辺堰１２ｂの下部を、一対
の長辺堰１２ａの側線方向に沿って、所定量移動した
後、一対の短辺堰１２ｂの上部を、一対の長辺堰１２ａ
の側線方向に沿って、所定量移動し、さらに、その後、
一対の短辺堰１２ｂの下部を、一対の長辺堰１２ａの側
線方向に沿って、所定量移動して板幅を縮小する一方、
一対の短辺堰１２ｂの下部を、一対の長辺堰１２ａの側
線方向に沿って、所定量移動した後、一対の短辺堰１２
ｂの上部を、一対の長辺堰１２ａの側線方向に沿って、
所定量移動し、さらに、その後、一対の短辺堰１２ｂの
下部を、一対の長辺堰１２ａの側線方向に沿って、所定
量移動して板幅を拡大したので、本発明の第４の実施の
形態に係る薄板連続鋳造装置４０を用いた薄板連続鋳造
方法と同様に、例えば、一対の短辺堰１２ｂを、鉛直状
態で平行移動させる場合等に比べ、湯溜部１３内の溶融
金属１４が激しく揺動するのを防止することができ、従
来のように、薄板１５の表面性状が悪化するのを防止し
て、薄板１５の板幅を容易に変更することができる。As described above, according to still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, the lower parts of the pair of short side weirs 12b are provided with a pair of short side dams. After moving a predetermined amount along the lateral line direction of the long side weir 12a, the upper part of the pair of short side weirs 12b is moved over the pair of long side weirs 12a.
Along the lateral direction of, move a predetermined amount, and then,
While moving the lower portion of the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a by a predetermined amount to reduce the plate width,
After moving a lower portion of the pair of short-side weirs 12b along the lateral direction of the pair of long-side weirs 12a by a predetermined amount, the pair of short-side weirs 12b
the upper part of b along the lateral direction of the pair of long side weirs 12a,
A predetermined amount is moved, and thereafter, the lower portions of the pair of short-side weirs 12b are moved by a predetermined amount along the lateral direction of the pair of long-side weirs 12a to expand the plate width. Similar to the thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the embodiment, for example, compared with a case where a pair of short side weirs 12b are moved in parallel in a vertical state, the molten metal in the molten metal reservoir 13 It is possible to prevent the vigorous swinging of the thin plate 14, prevent deterioration of the surface quality of the thin plate 15 as in the conventional case, and easily change the plate width of the thin plate 15.

【０１３２】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、更に他の薄板連続鋳造
方法について説明する。 （実施例１３）まず、前記実施例１と同様にして、板厚
２ｍｍの、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、鋳造速度６０ｍ／ｍｉｎで
連続鋳造し始めた。そして、連続操業中、薄板１５の板
幅変更を実施した。以下、薄板１５の板幅を変更する、
更に他の板幅変更方法について、説明する（図８（ａ）
〜（ｃ）参照）。Next, still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention will be described. (Example 13) First, in the same manner as in Example 1, stainless steel (S having a thickness of 2 mm and a chromium content of 18 wt% (S
The thin plate 15 of US304) was started to be continuously cast at a casting speed of 60 m / min. Then, the plate width of the thin plate 15 was changed during the continuous operation. Hereafter, the width of the thin plate 15 is changed,
Still another plate width changing method will be described (FIG. 8A).
To (c)).

【０１３３】初めに、薄板１５の板幅を縮小する、板幅
変更方法について、説明する。まず、前記実施例８と同
様にして、制御部が、一対の短辺堰１２ｂを、一対の長
辺堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同
士を近接する方向（以下、図８（ａ）〜（ｃ）中、矢視
Ａ方向という）に移動させる、板幅縮小信号を、供給装
置に出力する。次に、供給装置が、前記実施例８と同様
にして、上方の直線駆動手段３１ａのロッド部３１ｂ
を、図８（ａ）中、矢視Ａ方向に、所定量移動させるこ
とにより、一対の短辺堰１２ｂは、その下部を回動中心
として、時計周りに所定僅少角度（γ）回動され、一対
の短辺堰１２ｂの外面は、図８（ｂ）中、矢視Ａ方向
に、所定僅少角度（γ）傾斜される（第１傾斜動工
程）。First, a plate width changing method for reducing the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit moves the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a so that the pair of short side weirs 12b come close to each other (hereinafter, 8A to 8C, a plate width reduction signal for moving in the arrow A direction is output to the supply device. Next, in the same manner as in the eighth embodiment, the feeding device uses the rod portion 31b of the upper linear drive means 31a.
8A, the pair of short side weirs 12b is rotated clockwise by a predetermined small angle (γ) with its lower portion as a rotation center by moving the pair of short side dams 12b by a predetermined amount in the direction of arrow A. The outer surfaces of the pair of short-side weirs 12b are tilted by a predetermined small angle (γ) in the direction of arrow A in FIG. 8B (first tilting step).

【０１３４】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、一対の直線駆
動手段３１ａのロッド部３１ｂを、図８（ｂ）中、矢視
Ａ方向に所定量移動させることにより、一対の短辺堰１
２ｂは、第１傾斜動工程で、所定僅少角度（γ）傾斜さ
れた状態で、所定量平行移動される（平行移動工程）。
さらに、供給装置は、前記実施例８と同様にして、平行
移動工程の終了を検知して、下方の直線駆動手段３１ａ
のロッド部３１ｂを、図８（ｂ）中、矢視Ａ方向に所定
量移動させることにより、一対の短辺堰１２ｂは、その
上部を回動中心として、反時計周りに所定僅少角度
（γ′）回動され、一対の短辺堰１２ｂの外面は、図８
（ｃ）中、矢視Ａ方向に、所定僅少角度（γ′）傾斜さ
れる（第２傾斜動工程）。これにより、連続鋳造される
薄板１５の板幅を縮小する、板幅変更を完了する。Next, the feeding device detects the end of the first tilting process and, as in the case of the eighth embodiment, detects the rod portions 31b of the pair of linear driving means 31a from each other as shown in FIG. By moving a predetermined amount in the direction of arrow A, the pair of short side weirs 1
2b is a first tilting step, which is translated by a predetermined amount in a state of being tilted by a predetermined slight angle (γ) (parallel moving step).
Further, the supply device detects the end of the parallel movement process in the same manner as in the eighth embodiment, and the linear drive means 31a at the bottom is detected.
8B, the pair of short side dams 12b is rotated by a predetermined amount in the direction of arrow A in FIG. ′) When rotated, the outer surfaces of the pair of short side weirs 12b are shown in FIG.
In (c), a predetermined slight angle (γ ′) is tilted in the direction of arrow A (second tilting step). This completes the plate width change for reducing the plate width of the continuously cast thin plate 15.

【０１３５】次に、薄板１５の板幅を拡大する、板幅変
更方法について、説明する。まず、前記実施例８と同様
にして、制御部が、一対の短辺堰１２ｂを、一対の長辺
堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同士
を離反する方向（以下、図８（ａ）〜（ｃ）中、矢視
Ａ′方向という）に移動させる、板幅拡大信号を、供給
装置に出力する。そして、供給装置が、前記と逆の動作
を行って、下方の直線駆動手段３１ａのロッド部３１ｂ
を、図８（ｃ）中、矢視Ａ′方向に所定量移動させるこ
とにより、一対の短辺堰１２ｂは、その上部を回動中心
として、時計周りに所定僅少角度（γ′）回動され、一
対の短辺堰１２ｂの外面は、図８（ｂ）中、矢視Ａ′方
向に、所定僅少角度（γ′）傾斜される（第１傾斜動工
程）。Next, a plate width changing method for expanding the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit separates the pair of short-side weirs 12b from each other along the lateral direction of the pair of long-side weirs 12a (hereinafter, 8 (a) to 8 (c), the plate width enlargement signal to be moved in the arrow A'direction) is output to the supply device. Then, the supply device performs the reverse operation to the above, and the rod portion 31b of the lower linear drive means 31a.
8C, by moving a predetermined amount in the direction of arrow A ′, the pair of short-side weirs 12b rotate clockwise by a predetermined small angle (γ ′) with the upper part thereof as the center of rotation. Then, the outer surfaces of the pair of short-side weirs 12b are tilted in the direction of arrow A'in FIG. 8B by a predetermined slight angle (γ ') (first tilting step).

【０１３６】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、一対の直線駆
動手段３１ａのロッド部３１ｂを、図８（ｂ）中、矢視
Ａ′方向に所定量移動させることにより、一対の短辺堰
１２ｂは、第１傾斜動工程で、所定僅少角度（γ′）傾
斜された状態で、所定量平行移動される（平行移動工
程）。さらに、供給装置は、前記実施例８と同様にし
て、平行移動工程の終了を検知して、上方の直線駆動手
段３１ａのロッド部３１ｂを、図８（ｂ）中、矢視Ａ′
方向に所定量移動させることにより、一対の短辺堰１２
ｂは、その下部を回動中心として、反時計周りに所定僅
少角度（γ）回動され、一対の短辺堰１２ｂの外面は、
図８（ａ）中、矢視Ａ′方向に、所定僅少角度（γ）傾
斜される（第２傾斜動工程）。これにより、連続鋳造さ
れる薄板１５の板幅を拡大する、板幅変更を完了する。Next, the feeding device detects the end of the first tilting process and, as in the case of the eighth embodiment, detects the rod portions 31b of the pair of linear driving means 31a from each other as shown in FIG. By moving a predetermined amount in the direction of arrow A ′, the pair of short-side weirs 12b are parallel-moved by a predetermined amount in a state of being tilted by a predetermined slight angle (γ ′) in the first tilting step (parallel movement). Process). Further, in the same manner as in the eighth embodiment, the supply device detects the end of the parallel movement process and moves the rod portion 31b of the upper linear drive means 31a to the arrow A'in FIG. 8 (b).
By moving a predetermined amount in the direction, a pair of short side weirs 12
b is rotated counterclockwise by a predetermined small angle (γ) with its lower part as the center of rotation, and the outer surfaces of the pair of short side weirs 12b are
In FIG. 8 (a), a predetermined slight angle (γ) is tilted in the direction of arrow A '(second tilting step). As a result, the plate width change for expanding the plate width of the continuously cast thin plate 15 is completed.

【０１３７】なお、前記実施例１３では、前記実施例１
と同様に、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、連続鋳造する場合につい
て、説明したが、前記実施例２と同様に、カーボン含有
量０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の薄板１５
を、連続鋳造する場合についても、同様に板幅変更する
ことができる。In the thirteenth embodiment, the first embodiment is the same as the first embodiment.
Similarly, stainless steel with a chromium content of 18 wt% (S
The case of continuously casting the thin plate 15 of US304) has been described, but the thin plate 15 of carbon steel having a carbon content of 0.03 wt% to 0.10 wt% is similar to the second embodiment.
In the case of continuously casting, the plate width can be similarly changed.

【０１３８】以上のように、本発明の第４の実施の形態
に係る薄板連続鋳造装置４０を用いた、更に他の薄板連
続鋳造方法によれば、一対の短辺堰１２ｂの上部を、一
対の長辺堰１２ａの側線方向に沿って、所定量移動した
後、その状態で一対の短辺堰１２ｂを平行移動し、さら
に、その後、一対の短辺堰１２ｂの下部を、一対の長辺
堰１２ａの側線方向に沿って、所定量移動して板幅を縮
小する一方、一対の短辺堰１２ｂの下部を、一対の長辺
堰１２ａの側線方向に沿って、所定量移動した後、その
状態で一対の短辺堰１２ｂを平行移動し、さらに、その
後、一対の短辺堰１２ｂの上部を、一対の長辺堰１２ａ
の側線方向に沿って、所定量移動して板幅を拡大したの
で、本発明の第４の実施の形態に係る薄板連続鋳造装置
４０を用いた薄板連続鋳造方法と同様に、例えば、一対
の短辺堰１２ｂを、鉛直状態で平行移動させる場合等に
比べ、湯溜部１３内の溶融金属１４が激しく揺動するの
を防止することができ、従来のように、薄板１５の表面
性状が悪化するのを防止して、薄板１５の板幅を容易に
変更することができる。As described above, according to still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, the pair of short side weirs 12b are provided with a pair of upper parts. After moving by a predetermined amount along the lateral direction of the long side weir 12a, the pair of short side weirs 12b is translated in that state, and then the lower portion of the pair of short side weirs 12b is moved to the pair of long sides. After moving a predetermined amount along the lateral direction of the weir 12a to reduce the plate width, after moving a lower portion of the pair of short-side weirs 12b by a predetermined amount along the lateral direction of the pair of long-side weirs 12a, In that state, the pair of short-side weirs 12b are moved in parallel, and thereafter, the upper portions of the pair of short-side weirs 12b are placed over the pair of long-side weirs 12a.
Along the lateral direction of the plate, the plate width is expanded by moving a predetermined amount. Therefore, similar to the thin plate continuous casting method using the thin plate continuous casting device 40 according to the fourth embodiment of the present invention, for example, a pair of Compared with the case where the short-side weir 12b is moved in parallel in the vertical state, it is possible to prevent the molten metal 14 in the hot water reservoir 13 from vibrating violently, and the surface property of the thin plate 15 is different from the conventional one. It is possible to prevent the deterioration and easily change the plate width of the thin plate 15.

【０１３９】続いて、本発明の第４の実施の形態に係る
薄板連続鋳造装置４０を用いた、更に他の薄板連続鋳造
方法について説明する。 （実施例１４）まず、前記実施例１と同様にして、板厚
２ｍｍの、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、鋳造速度６０ｍ／ｍｉｎで
連続鋳造し始めた。そして、連続操業中、薄板１５の板
幅変更を実施した。以下、薄板１５の板幅を変更する、
更に他の板幅変更方法について、説明する（図１２
（ａ）〜（ｃ）参照）。Next, still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention will be described. (Example 14) First, in the same manner as in Example 1, a stainless steel plate having a chromium content of 18 wt% with a plate thickness of 2 mm (S
The thin plate 15 of US304) was started to be continuously cast at a casting speed of 60 m / min. Then, the plate width of the thin plate 15 was changed during the continuous operation. Hereafter, the width of the thin plate 15 is changed,
Still another plate width changing method will be described (FIG. 12).
(See (a) to (c)).

【０１４０】初めに、薄板１５の板幅を縮小する、板幅
変更方法について、説明する。まず、前記実施例８と同
様にして、制御部が、一対の短辺堰１２ｂを、一対の長
辺堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同
士を近接する方向（以下、図１２（ａ）〜（ｃ）中、矢
視Ｃ方向という）に移動させる、板幅縮小信号を、供給
装置に出力する。次に、供給装置が、前記実施例８と同
様にして、下方の直線駆動手段３１ａのロッド部３１ｂ
を、図１２（ａ）中、矢視Ｃ方向に、所定量移動させる
ことにより、一対の短辺堰１２ｂは、その上部を回動中
心として、反時計周りに所定僅少角度（δ）回動され、
一対の短辺堰１２ｂの外面は、図１２（ｂ）中、矢視Ｃ
方向に、所定僅少角度（δ）傾斜される（第１傾斜動工
程）。First, a plate width changing method for reducing the plate width of the thin plate 15 will be described. First, in the same manner as in Example 8, the control unit moves the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a so that the pair of short side weirs 12b approach each other (hereinafter, A plate width reduction signal that is moved in the direction of arrow C in FIGS. 12A to 12C is output to the supply device. Next, in the same manner as in the eighth embodiment, the feeding device uses the rod portion 31b of the lower linear drive means 31a.
12A, by moving a predetermined amount in the direction of arrow C, the pair of short-side weirs 12b rotate counterclockwise by a predetermined small angle (δ) with the upper part thereof as the rotation center. Is
The outer surfaces of the pair of short side weirs 12b are shown by arrow C in FIG.
Direction is tilted by a predetermined slight angle (δ) (first tilting motion step).

【０１４１】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、一対の直線駆
動手段３１ａのロッド部３１ｂを、図１２（ｂ）中、矢
視Ｃ方向に所定量移動させることにより、一対の短辺堰
１２ｂは、第１傾斜動工程で、所定僅少角度（δ）傾斜
された状態で、所定量平行移動される（平行移動工
程）。さらに、供給装置は、前記実施例８と同様にし
て、平行移動工程の終了を検知して、上方の直線駆動手
段３１ａのロッド部３１ｂを、図１２（ｂ）中、矢視Ｃ
方向に所定量移動させることにより、一対の短辺堰１２
ｂは、その下部を回動中心として、時計周りに所定僅少
角度（δ′）回動され、一対の短辺堰１２ｂの外面は、
図１２（ｃ）中、矢視Ｃ方向に、所定僅少角度（δ′）
傾斜される（第２傾斜動工程）。これにより、連続鋳造
される薄板１５の板幅を縮小する、板幅変更を完了す
る。Then, the feeding device detects the end of the first tilting process and detects the rod portions 31b of the pair of linear driving means 31a as shown in FIG. By moving the pair of short side weirs 12b by a predetermined amount in the direction of arrow C, the pair of short side weirs 12b is translated by a predetermined amount in a state of being tilted by a predetermined slight angle (δ) in the first tilting step (parallel moving step). . Further, in the same manner as in the eighth embodiment, the supply device detects the end of the parallel movement process and moves the rod portion 31b of the upper linear drive means 31a to the arrow C in FIG. 12 (b).
By moving a predetermined amount in the direction, a pair of short side weirs 12
b is rotated clockwise by a predetermined slight angle (δ ′) with its lower part as the center of rotation, and the outer surfaces of the pair of short side weirs 12b are
In FIG. 12 (c), a predetermined small angle (δ ') in the arrow C direction.
It is tilted (second tilting step). This completes the plate width change for reducing the plate width of the continuously cast thin plate 15.

【０１４２】次に、薄板１５の板幅を拡大する、板幅変
更方法について、説明する。まず、前記実施例８と同様
にして、制御部が、一対の短辺堰１２ｂを、一対の長辺
堰１２ａの側線方向に沿って、一対の短辺堰１２ｂ同士
を離反する方向（以下、図１２（ａ）〜（ｃ）中、矢視
Ｃ′方向という）に移動させる、板幅拡大信号を、供給
装置に出力する。そして、供給装置が、前記と逆の動作
を行って、上方の直線駆動手段３１ａのロッド部３１ｂ
を、図１２（ｃ）中、矢視Ｃ′方向に所定量移動させる
ことにより、一対の短辺堰１２ｂは、その下部を回動中
心として、反時計周りに所定僅少角度（δ′）回動さ
れ、一対の短辺堰１２ｂの外面は、図１２（ｂ）中、矢
視Ｃ′方向に、所定僅少角度（δ′）傾斜される（第１
傾斜動工程）。Next, a plate width changing method for expanding the plate width of the thin plate 15 will be described. First, in the same way as in Example 8, the control unit separates the pair of short side weirs 12b from each other along the lateral direction of the pair of long side weirs 12a (hereinafter, 12A to 12C, the plate width enlargement signal to be moved in the arrow C'direction) is output to the supply device. Then, the supply device performs the opposite operation to the above, and the rod portion 31b of the upper linear drive means 31a is performed.
12C, by moving a predetermined amount in the direction of arrow C ′, the pair of short-side weirs 12b rotate counterclockwise by a predetermined small angle (δ ′) with the lower part thereof as the center of rotation. The outer surfaces of the pair of short-side weirs 12b are tilted in the direction of arrow C ′ in FIG. 12B by a predetermined slight angle (δ ′) (first).
Tilting process).

【０１４３】次に、供給装置は、前記実施例８と同様に
して、第１傾斜動工程の終了を検知して、一対の直線駆
動手段３１ａのロッド部３１ｂを、図１２（ｂ）中、矢
視Ｃ′方向に所定量移動させることにより、一対の短辺
堰１２ｂは、第１傾斜動工程で、所定僅少角度（δ′）
傾斜された状態で、所定量平行移動される（平行移動工
程）。さらに、供給装置は、前記実施例８と同様にし
て、平行移動工程の終了を検知して、下方の直線駆動手
段３１ａのロッド部３１ｂを、図１２（ｂ）中、矢視
Ｃ′方向に所定量移動させることにより、一対の短辺堰
１２ｂは、その上部を回動中心として、時計周りに所定
僅少角度（δ）回動され、一対の短辺堰１２ｂの外面
は、図１２（ｃ）中、矢視Ｃ′方向に、所定僅少角度
（δ）傾斜される（第２傾斜動工程）。これにより、連
続鋳造される薄板１５の板幅を拡大する、板幅変更を完
了する。Next, the feeding device detects the end of the first tilting process and detects the rod portions 31b of the pair of linear driving means 31a as shown in FIG. By moving a predetermined amount in the direction of arrow C ', the pair of short side weirs 12b are moved by the predetermined slight angle (δ') in the first tilting step.
A predetermined amount of translation is performed in the inclined state (translation process). Further, the feeding device detects the end of the parallel movement process and moves the rod portion 31b of the lower linear drive means 31a in the direction of arrow C'in FIG. By moving the pair of short side weirs 12b, the pair of short side weirs 12b is rotated clockwise by a predetermined small angle (δ) around the upper portion as a rotation center, and the outer surfaces of the pair of short side weirs 12b are shown in FIG. ) Inside, it is tilted by a predetermined slight angle (δ) in the direction of arrow C '(second tilting motion step). As a result, the plate width change for expanding the plate width of the continuously cast thin plate 15 is completed.

【０１４４】なお、前記実施例１４では、前記実施例１
と同様に、クロム含有量１８ｗｔ％のステンレス鋼（Ｓ
ＵＳ３０４）の薄板１５を、連続鋳造する場合につい
て、説明したが、前記実施例２と同様に、カーボン含有
量０．０３ｗｔ％〜０．１０ｗｔ％の炭素鋼の薄板１５
を、連続鋳造する場合についても、同様に板幅変更する
ことができる。In the fourteenth embodiment, the first embodiment is the same as the first embodiment.
Similarly, stainless steel with a chromium content of 18 wt% (S
The case of continuously casting the thin plate 15 of US304) has been described, but the thin plate 15 of carbon steel having a carbon content of 0.03 wt% to 0.10 wt% is similar to the second embodiment.
In the case of continuously casting, the plate width can be similarly changed.

【０１４５】以上のように、本発明の第４の実施の形態
に係る薄板連続鋳造装置４０を用いた、更に他の薄板連
続鋳造方法によれば、一対の短辺堰１２ｂの下部を、一
対の長辺堰１２ａの側線方向に沿って、所定量移動した
後、その状態で一対の短辺堰１２ｂを平行移動し、さら
に、その後、一対の短辺堰１２ｂの上部を、一対の長辺
堰１２ａの側線方向に沿って、所定量移動して板幅を縮
小する一方、一対の短辺堰１２ｂの上部を、一対の長辺
堰１２ａの側線方向に沿って、所定量移動した後、その
状態で一対の短辺堰１２ｂを平行移動し、さらに、その
後、一対の短辺堰１２ｂの下部を、一対の長辺堰１２ａ
の側線方向に沿って、所定量移動して板幅を拡大したの
で、本発明の第４の実施の形態に係る薄板連続鋳造装置
４０を用いた薄板連続鋳造方法と同様に、例えば、一対
の短辺堰１２ｂを鉛直状態で平行移動させる場合等に比
べ、湯溜部１３内の溶融金属１４が激しく揺動するのを
防止することができ、従来のように、薄板１５の表面性
状が悪化するのを防止して、薄板１５の板幅を容易に変
更することができる。さらに、一対の短辺堰１２ｂの平
行移動量を変更するだけで、前記実施例８と同じ板幅変
更量とすることができる。As described above, according to still another thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, the lower portions of the pair of short side weirs 12b are paired with each other. After moving a predetermined amount along the lateral direction of the long-side weir 12a, the pair of short-side weirs 12b is translated in that state, and then the upper portion of the pair of short-side weirs 12b is moved to the pair of long-sides. After moving a predetermined amount along the lateral direction of the weir 12a to reduce the plate width, after moving the upper portion of the pair of short side weirs 12b along the lateral direction of the pair of long side weirs 12a by a predetermined amount, In that state, the pair of short-side weirs 12b are moved in parallel, and then the lower portions of the pair of short-side weirs 12b are moved to the pair of long-side weirs 12a.
Along the lateral direction of the plate, the plate width is expanded by moving a predetermined amount. Therefore, similar to the thin plate continuous casting method using the thin plate continuous casting device 40 according to the fourth embodiment of the present invention, for example, a pair of Compared with a case where the short-side weir 12b is moved in parallel in the vertical state, it is possible to prevent the molten metal 14 in the hot water reservoir 13 from vibrating violently, and the surface quality of the thin plate 15 deteriorates as in the conventional case. It is possible to prevent this from occurring and easily change the width of the thin plate 15. Further, it is possible to obtain the same plate width change amount as in the eighth embodiment by only changing the parallel movement amount of the pair of short side weirs 12b.

【０１４６】続いて、本発明の第５の実施の形態に係る
薄板連続鋳造装置５０について説明する。図１５に示す
ように、本発明の第５の実施の形態に係る薄板連続鋳造
装置５０が、本発明の第１〜第４の実施の形態に係る薄
板連続鋳造装置１０〜４０と異なるのは、一対の鋳造ロ
ール４１が、それぞれ、一方向に長尺で、かつ、その中
心軸方向の所定部から、両端部に向かって、縮径された
縮径部４１ｃを有する、ロール胴体部４１ａと、縮径部
４１ｃに、ロール胴体部４１ａの外表面の材質に比べ、
低熱伝導性の材料を、被膜してなるロール表面部４１ｂ
とを備えた点である。以下、これらについて詳しく説明
する。Next, a thin plate continuous casting apparatus 50 according to a fifth embodiment of the present invention will be described. As shown in FIG. 15, the thin plate continuous casting apparatus 50 according to the fifth embodiment of the present invention is different from the thin plate continuous casting apparatuses 10 to 40 according to the first to fourth embodiments of the present invention. The pair of casting rolls 41 are elongated in one direction, and each has a reduced diameter portion 41c that is reduced in diameter from a predetermined portion in the central axis direction thereof toward both ends, and a roll body portion 41a. In comparison with the material of the outer surface of the roll body portion 41a,
Roll surface portion 41b formed by coating a material having low thermal conductivity
It is a point equipped with and. Hereinafter, these will be described in detail.

【０１４７】（実施例１５）前記実施例１と同様にし
て、クロム含有量１８ｗｔ％のステンレス鋼（ＳＵＳ３
０４）の薄板１５を連続鋳造する場合、溶融金属１４の
抜熱量（又は溶融金属１４の、一対の鋳造ロール１１の
側線方向中央部の温度に対する温度という）は、図１６
中、一点鎖線ｂで示すように、一対の鋳造ロール１１の
外周面の側線方向に沿って変化することがわかった。そ
こで、胴長（Ｌ）が１２００ｍｍで、かつ、直径（φ）
が５００ｍｍのロール胴体部４１ａの中心軸方向の所定
部から両端部まで、それぞれ３５０ｍｍの幅（Ｌ2 ）を
持って、その直径（φ）を２ｍｍ縮径する（すなわち直
径（φ1 ）が４９８ｍｍの縮径部４１ｃを形成した後、
このロール胴体部４１ａの縮径部４１ｃに、アルミナ等
の低熱伝導性材料を、プラズマ溶射法等の溶射法を適用
して、ロール表面部４１ｂを被膜することにより、一対
の鋳造ロール４１を形成した。なお、図１５中、中央部
の長さ（Ｌ1 ）は５００ｍｍである。(Example 15) In the same manner as in Example 1, stainless steel having a chromium content of 18 wt% (SUS3) was used.
When the thin plate 15 of 04) is continuously cast, the heat removal amount of the molten metal 14 (or the temperature of the molten metal 14 with respect to the temperature at the central portion in the lateral direction of the pair of casting rolls 11) is as shown in FIG.
It was found that, as indicated by the alternate long and short dash line b, it changes along the lateral direction of the outer peripheral surfaces of the pair of casting rolls 11. Therefore, the body length (L) is 1200 mm, and the diameter (φ)
Has a width (L 2 ) of 350 mm from a predetermined portion in the central axis direction of the roll body portion 41 a having a length of 500 mm to both ends, and the diameter (φ) is reduced by 2 mm (that is, the diameter (φ 1 ) is 498 mm). After forming the reduced diameter portion 41c of
A low thermal conductive material such as alumina is applied to the reduced diameter portion 41c of the roll body portion 41a by a thermal spraying method such as a plasma spraying method to coat the roll surface portion 41b to form a pair of casting rolls 41. did. In addition, in FIG. 15, the length (L 1 ) of the central portion is 500 mm.

【０１４８】なお、図１６中、一点鎖線ａは本発明の第
５の実施の形態に係る薄板連続鋳造装置５０を用いた薄
板連続鋳造方法の連続鋳造操業時における溶融金属１４
の一対の鋳造ロール１１の側線方向に沿った抜熱変化
量、図１６中、破線ｂは従来の実施の形態に係る薄板連
続鋳造装置２００を用いた薄板連続鋳造方法の連続鋳造
操業時における溶融金属１４の一対の鋳造ロール５１の
側線方向に沿った抜熱変化量である。In FIG. 16, the alternate long and short dash line a indicates the molten metal 14 in the continuous casting operation of the continuous thin plate casting method using the continuous thin plate casting apparatus 50 according to the fifth embodiment of the present invention.
16, the amount of change in heat removal along the lateral direction of the casting rolls 11, the broken line b in FIG. 16 indicates melting during continuous casting operation of the thin plate continuous casting method using the thin plate continuous casting apparatus 200 according to the conventional embodiment. It is the heat removal change amount along the lateral direction of the pair of casting rolls 51 of the metal 14.

【０１４９】なお、本発明の第５の実施の形態に係る薄
板連続鋳造装置５０を用いた、薄板連続鋳造方法は、本
発明の第１〜第４の実施の形態に係る薄板連続鋳造装置
１０〜４０を用いた、薄板連続鋳造方法等と同様なもの
なので、説明を省略する。The thin plate continuous casting method using the thin plate continuous casting apparatus 50 according to the fifth embodiment of the present invention is the thin plate continuous casting apparatus 10 according to the first to fourth embodiments of the present invention. The description is omitted because it is the same as the thin plate continuous casting method or the like using No.

【０１５０】以上のように、本発明の第５の実施の形態
に係る薄板連続鋳造装置５０、及びそれを用いた薄板連
続鋳造方法によれば、連続操業時における溶融金属１４
の、一対の鋳造ロール１１の側線方向に沿った温度分布
に従って、ロール胴体部４１ａの中心軸方向の所定部か
ら両端部に向かって縮径すると共に、ロール胴体部４１
ａの縮径部４１ｃに低熱伝導性材料を被膜したので、本
発明の第１〜第４の実施の形態に係る薄板連続鋳造装置
１０〜４０と、同様の効果が得られる他、連続操業中の
溶融金属１４の、一対の鋳造ロール４１の側線方向に沿
った温度分布を均一にすることができ、従来のように、
連続鋳造された薄板１５の中央部が凹むのを防止するこ
とができる。As described above, according to the thin plate continuous casting apparatus 50 and the thin plate continuous casting method using the same according to the fifth embodiment of the present invention, the molten metal 14 during continuous operation is
In accordance with the temperature distribution along the lateral direction of the pair of casting rolls 11, the diameter of the roll body 41a is reduced from a predetermined portion in the central axis direction toward both ends, and the roll body 41a.
Since the reduced-diameter portion 41c of a is coated with the low thermal conductivity material, the same effects as those of the thin plate continuous casting apparatuses 10 to 40 according to the first to fourth embodiments of the present invention can be obtained, and during continuous operation. It is possible to make uniform the temperature distribution of the molten metal 14 along the lateral direction of the pair of casting rolls 41.
It is possible to prevent the central portion of the continuously cast thin plate 15 from being dented.

【０１５１】換言すると、従来の実施の形態に係る薄板
連続鋳造装置２００を用いた薄板連続鋳造方法では、溶
融金属１４の放熱効果及び冷却効果が、一対の鋳造ロー
ル１１の中心軸方向中央部から両端部に行くに従って、
強くなるために、一対の鋳造ロール１１の側線方向両端
部に接する、溶融金属１４の抜熱量（又は凝固速度）
も、一対の鋳造ロール１１の側線方向中央部に接する、
溶融金属１４の抜熱量（又は凝固速度）に比べて、大き
くなるために、抜熱量の小さな前記中央部に接する、溶
融金属１４が凝固して生成された薄板１５の中央部は、
前記の如く、拘束収縮によって変形する（換言すると凹
む）が、前記両端部の抜熱をロール表面部４１ｂにより
抑制することができるので、平板状の薄板１５を連続鋳
造することができる。In other words, in the thin plate continuous casting method using the thin plate continuous casting apparatus 200 according to the conventional embodiment, the heat dissipation effect and the cooling effect of the molten metal 14 are from the central portion in the central axis direction of the pair of casting rolls 11. As you go to both ends,
The amount of heat removal (or solidification rate) of the molten metal 14 in contact with both ends of the pair of casting rolls 11 in the lateral direction in order to become stronger.
Also contacts the central portion in the lateral direction of the pair of casting rolls 11,
Since the amount of heat removal (or solidification rate) of the molten metal 14 is larger, the central portion of the thin plate 15 produced by solidification of the molten metal 14 is in contact with the central portion where the amount of heat removal is small.
As described above, although it deforms due to restraint contraction (in other words, it dents), heat removal at both ends can be suppressed by the roll surface portion 41b, so that the flat thin plate 15 can be continuously cast.

【０１５２】このように、本発明の第５の実施の形態に
係る薄板連続鋳造装置５０、及び、それを用いた薄板連
続鋳造方法によれば、従来のように、中央が凹んだ薄板
が連続鋳造するのを防止して、均一な板厚の薄板１５を
連続鋳造することができる。As described above, according to the thin plate continuous casting apparatus 50 according to the fifth embodiment of the present invention and the thin plate continuous casting method using the same, a thin plate having a recessed center is continuous as in the conventional case. By preventing casting, the thin plate 15 having a uniform plate thickness can be continuously cast.

【０１５３】以上、本発明の実施の形態を説明したが、
本発明はこれらの実施の形態に限定されるものではな
く、要旨を逸脱しない条件の変更等は全て本発明の適用
範囲である。The embodiment of the present invention has been described above.
The present invention is not limited to these embodiments, and all changes in conditions without departing from the gist are within the scope of the present invention.

【０１５４】例えば、本発明の第４の実施の形態におけ
る薄板連続鋳造装置４０を用いた、薄板連続鋳造方法で
は、図７中、左方の短辺堰１２ｂについて説明したが、
図７中、右方の短辺堰１２ｂは、本発明の第４の実施の
形態に係る薄板連続鋳造装置４０を用いた薄板連続鋳造
方法の板幅変更と同様に、前記左方の短辺堰１２ｂと線
対称の動作をさせてもよいし、異なった動作をさせても
よい。また、板幅を縮小するときや拡大するときの第１
傾斜動工程等の傾斜角度（δ等）は、同じにしてもよい
し、異ならせてもよい。For example, in the thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention, the short side weir 12b on the left side in FIG. 7 has been described.
In FIG. 7, the short side weir 12b on the right side is the short side on the left side similarly to the plate width change of the thin plate continuous casting method using the thin plate continuous casting apparatus 40 according to the fourth embodiment of the present invention. The weir 12b may be axisymmetrically operated, or may be operated differently. In addition, the first when reducing or expanding the board width
The tilt angles (δ and the like) in the tilting step and the like may be the same or different.

【０１５５】なお、前記実施例１０〜１４において、前
記傾斜角度（λ）及び前記傾斜角度（μ）は、前記と同
様に約０．１７２°〜約１．１４６°とされるのがこの
ましい。また、前記実施例８において、前記傾斜角度
（λ）を、約１．１４６°以上とした場合には、同板幅
変更方法の、第１傾斜動工程、及び、第２傾斜動工程の
所要時間（Ｔ1 ）は、前記実施例１０の、板幅変更方法
の、第１傾斜動工程、及び、第２傾斜動工程の所要時間
（Ｔ2 ）より、短く（Ｔ1 ＜Ｔ2 ）するのが好ましい。
板幅変更の所要時間（Ｔ1 ）を、板幅変更の所要時間
（Ｔ2 ）より短くすることで、一対の短辺堰１２ｂの内
面と、薄板１５の外面の間にエアーギャップが発生する
のを防止することができ、ＢＯが発生し難くなるからで
ある。In the tenth to fourteenth embodiments, the inclination angle (λ) and the inclination angle (μ) are set to about 0.172 ° to about 1.146 ° as described above. Yes. Further, in the eighth embodiment, when the inclination angle (λ) is about 1.146 ° or more, the first inclination movement step and the second inclination movement step of the plate width changing method are required. The time (T 1 ) is shorter (T 1 <T 2 ) than the time (T 2 ) required for the first tilting motion step and the second tilting motion step of the plate width changing method of the tenth embodiment. Is preferred.
By making the time required for changing the plate width (T 1 ) shorter than the time required for changing the plate width (T 2 ), an air gap is generated between the inner surfaces of the pair of short side dams 12b and the outer surface of the thin plate 15. This is because the occurrence of BO can be prevented and BO is less likely to occur.

【０１５６】また、同様の理由から、前記エアーギャッ
プの発生を防止するために、前記実施例１１において、
前記傾斜角度（λ）を、約１．１４６°以上とした場合
には、同板幅変更方法の、第１傾斜動工程〜第３傾斜動
工程の所要時間（Ｔ3 ）は、前記実施例１２の、同板幅
変更方法の、第１傾斜動工程〜第３傾斜動工程の所要時
間（Ｔ4 ）より短く（Ｔ3 ＜Ｔ4 ）するのが好ましい。For the same reason, in order to prevent the occurrence of the air gap, in the eleventh embodiment,
When the tilt angle (λ) is about 1.146 ° or more, the time required for the first tilting process to the third tilting motion step (T 3 ) of the plate width changing method is the same as in the above embodiment. It is preferable that the time (T 3 <T 4 ) is shorter than the time (T 4 ) required for the first tilting process to the third tilting process in the plate width changing method of No. 12.

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

【図１】本発明の第１の実施の形態に係る薄板連続鋳造
装置の要部斜視図である。FIG. 1 is a perspective view of a main part of a thin plate continuous casting apparatus according to a first embodiment of the present invention.

【図２】同薄板連続鋳造装置の要部側断面図である。FIG. 2 is a side sectional view of a main part of the thin plate continuous casting apparatus.

【図３】同薄板連続鋳造装置を用いた薄板連続鋳造方法
における湯溜部内の溶融金属の湯面から凝固開始位置ま
での距離（Ｈ）と連続鋳造される薄板のスカム疵の発生
指数の関係を示す特性図である。FIG. 3 is a diagram showing a relationship between a distance (H) from a molten metal surface in a molten metal pool to a solidification start position and a scum flaw occurrence index of a continuously cast thin plate in a thin plate continuous casting method using the same thin plate continuous casting apparatus. FIG.

【図４】本発明の第２の実施の形態に係る薄板連続鋳造
装置の要部斜視図である。FIG. 4 is a perspective view of essential parts of a thin plate continuous casting apparatus according to a second embodiment of the present invention.

【図５】同薄板連続鋳造装置の要部側面図である。FIG. 5 is a side view of a main part of the thin plate continuous casting apparatus.

【図６】本発明の第３の実施の形態に係る薄板連続鋳造
装置の要部斜視図である。FIG. 6 is a perspective view of a main part of a thin plate continuous casting apparatus according to a third embodiment of the present invention.

【図７】本発明の第４の実施の形態に係る薄板連続鋳造
装置の説明図である。FIG. 7 is an explanatory diagram of a thin plate continuous casting apparatus according to a fourth embodiment of the present invention.

【図８】（ａ）同薄板連続鋳造装置を用いた薄板連続鋳
造方法の説明図である。 （ｂ）同薄板連続鋳造装置を用いた薄板連続鋳造方法の
説明図である。 （ｃ）同薄板連続鋳造装置を用いた薄板連続鋳造方法の
説明図である。FIG. 8 (a) is an explanatory view of a thin plate continuous casting method using the same thin plate continuous casting apparatus. (B) It is explanatory drawing of the thin plate continuous casting method using the same thin plate continuous casting apparatus. (C) It is explanatory drawing of the thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図９】同薄板連続鋳造装置を用いた他の薄板連続鋳造
方法の説明図である。FIG. 9 is an explanatory diagram of another thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図１０】同薄板連続鋳造装置を用いた薄板連続鋳造方
法における一対の短辺堰の移動速度と連続鋳造される薄
板のスカム疵の発生指数の関係を示す特性図である。FIG. 10 is a characteristic diagram showing a relationship between a moving speed of a pair of short-side dams and a scum defect occurrence index of a continuously cast thin plate in a continuous thin plate casting method using the same thin plate continuous casting apparatus.

【図１１】（ａ）同薄板連続鋳造装置を用いた薄板連続
鋳造方法の説明図である。 （ｂ）従来の実施の形態に係る薄板連続鋳造装置を用い
た薄板連続鋳造方法の説明図である。FIG. 11 (a) is an explanatory diagram of a thin plate continuous casting method using the same thin plate continuous casting apparatus. (B) It is explanatory drawing of the thin plate continuous casting method using the thin plate continuous casting apparatus which concerns on conventional embodiment.

【図１２】（ａ）本発明の第４の実施の形態に係る薄板
連続鋳造装置を用いた他の薄板連続鋳造方法の説明図で
ある。 （ｂ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。 （ｃ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。FIG. 12 (a) is an explanatory view of another thin plate continuous casting method using the thin plate continuous casting apparatus according to the fourth embodiment of the present invention. (B) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus. (C) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図１３】（ａ）本発明の第４の実施の形態に係る薄板
連続鋳造装置を用いた他の薄板連続鋳造方法の説明図で
ある。 （ｂ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。 （ｃ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。 （ｄ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。FIG. 13 (a) is an explanatory view of another thin plate continuous casting method using the thin plate continuous casting apparatus according to the fourth embodiment of the present invention. (B) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus. (C) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus. (D) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図１４】（ａ）本発明の第４の実施の形態に係る薄板
連続鋳造装置を用いた他の薄板連続鋳造方法の説明図で
ある。 （ｂ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。 （ｃ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。 （ｄ）同薄板連続鋳造装置を用いた他の薄板連続鋳造方
法の説明図である。FIG. 14 (a) is an explanatory view of another thin plate continuous casting method using the thin plate continuous casting apparatus according to the fourth embodiment of the present invention. (B) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus. (C) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus. (D) It is explanatory drawing of another thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図１５】本発明の第５の実施の形態に係る薄板連続鋳
造装置の一対の鋳造ロールの要部断面図である。FIG. 15 is a cross-sectional view of essential parts of a pair of casting rolls of a thin plate continuous casting apparatus according to a fifth embodiment of the present invention.

【図１６】同薄板連続鋳造装置及び従来の実施の形態に
係る薄板連続鋳造装置を用いた薄板連続鋳造方法の連続
鋳造操業時における溶融金属の一対の鋳造ロールの側線
方向に沿った抜熱変化量を示す特性図である。FIG. 16 is a heat removal change along a lateral direction of a pair of casting rolls of molten metal during a continuous casting operation of a continuous thin plate casting method using the same thin plate continuous casting apparatus and a thin plate continuous casting apparatus according to a conventional embodiment. It is a characteristic view which shows quantity.

【図１７】従来の実施の形態に係る薄板連続鋳造装置の
説明図である。FIG. 17 is an explanatory view of a thin plate continuous casting apparatus according to a conventional embodiment.

【図１８】同薄板連続鋳造装置を用いた薄板連続鋳造方
法で連続鋳造された薄板の要部拡大正面図である。FIG. 18 is an enlarged front view of a main part of a thin plate continuously cast by a thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図１９】同薄板連続鋳造装置を用いた薄板連続鋳造方
法で連続鋳造された薄板の要部拡大側断面図である。FIG. 19 is an enlarged side sectional view of an essential part of a thin plate continuously cast by a thin plate continuous casting method using the same thin plate continuous casting apparatus.

【図２０】同薄板連続鋳造装置を用いた薄板連続鋳造方
法における連続鋳造操業中の一対の鋳造ロールの側線方
向に沿った外周面の温度分布図である。FIG. 20 is a temperature distribution diagram of the outer peripheral surfaces along the lateral direction of the pair of casting rolls during continuous casting operation in the continuous thin plate casting method using the same continuous thin plate casting apparatus.

【図２１】同薄板連続鋳造装置を用いた薄板連続鋳造方
法方法で連続鋳造された薄板の拡大平断面図である。FIG. 21 is an enlarged plan sectional view of a thin plate continuously cast by a thin plate continuous casting method using the same thin plate continuous casting apparatus.

【符号の説明】[Explanation of symbols]

１０ 薄板連続鋳造装置 １１ 鋳造ロー
ル １１ａ ロール胴体部 １１ｂ ロール
表面部 １１ｃ 冷却水通水溝 １２ 鋳型 １２ａ 長辺堰 １２ｂ 短辺堰 １２ｂ′ 短辺堰 １２ｃ コイル
収納用穴 １２ｄ コイル １２ｅ 軸支部 １２ｆ 鋳型 １２ｇ 鋳型 １３ 湯溜部 １３′ 湯溜部 １３ａ 湯溜部 １３ｂ 湯溜部 １３ｃ 湯溜部 １３ｄ 湯溜部 １３ｅ 湯溜部 １３ｆ 溶融金
属注湯口 １４ 溶融金属 １５ 薄板 １５ａ 凝固シェル １６ 湯面保護
材 ２０ 薄板連続鋳造装置 ２１ スペーサ
ー堰 ２２ 揺動防止材 ３０ 薄板連続
鋳造装置 ３１ 進退手段 ３１ａ 直線駆
動手段 ３１ｂ ロッド部 ３１ｃ 軸部 ４０ 薄板連続鋳造装置 ４１ 鋳造ロー
ル ４１ａ ロール胴体部 ４１ｂ ロール
表面部 ４１ｃ 縮径部 ５０ 薄板連続
鋳造装置10 Thin Plate Continuous Casting Equipment 11 Casting Roll 11a Roll Body 11b Roll Surface 11c Cooling Water Flow Groove 12 Mold 12a Long Side Weir 12b Short Side Weir 12b 'Short Side Weir 12c Coil Storage Hole 12d Coil 12e Shaft Support 12f Mold 12g Mold 13 Hot water part 13 'Hot water part 13a Hot water part 13b Hot water part 13c Hot water part 13d Hot water part 13e Hot water part 13f Molten metal pouring port 14 Molten metal 15 Thin plate 15a Solidified shell 16 Hot surface protector 20 Thin plate Continuous casting device 21 Spacer weir 22 Anti-rocking material 30 Thin plate continuous casting device 31 Advancement / retraction means 31a Linear drive means 31b Rod part 31c Shaft part 40 Thin plate continuous casting device 41 Cast roll 41a Roll body part 41b Roll surface part 41c Reduced diameter part 50 Thin plate continuous casting equipment

Claims (9)

【特許請求の範囲】[Claims] 【請求項１】 所定距離離間して平行状態で配置される
一対の鋳造ロールと、前記一対の鋳造ロールの上方に、
該一対の鋳造ロールの側線に沿って配置される一対の長
辺堰、及び下面が前記一対の鋳造ロールの側周上で、か
つ前記一対の長辺堰の間に配置される一対の短辺堰を備
えた枠状の鋳型とを有することを特徴とする薄板連続鋳
造装置。1. A pair of casting rolls arranged in parallel with a predetermined distance apart, and above the pair of casting rolls,
A pair of long side weirs arranged along the side lines of the pair of casting rolls, and a pair of short sides whose lower surface is on the side circumference of the pair of casting rolls and between the pair of long side weirs. A thin plate continuous casting apparatus, comprising: a frame-shaped mold provided with a weir. 【請求項２】 前記一対の短辺堰の間に、少なくとも１
以上のスペーサー堰を備えたことを特徴とする請求項１
記載の薄板連続鋳造装置。2. At least 1 is provided between the pair of short side weirs.
The spacer weir described above is provided.
The thin plate continuous casting device described. 【請求項３】 前記鋳型の内面を上から下に向かって拡
大するテーパー面としたことを特徴とする請求項１又は
２記載の薄板連続鋳造装置。3. The thin plate continuous casting apparatus according to claim 1, wherein the inner surface of the mold is a tapered surface that expands from top to bottom. 【請求項４】 前記テーパー面のテーパー比（α）を、
０．３％≦α≦２％の範囲内としたことを特徴とする請
求項３記載の薄板連続鋳造装置。4. The taper ratio (α) of the tapered surface is
The continuous thin plate casting apparatus according to claim 3, wherein the range is 0.3% ≤ α ≤ 2%. 【請求項５】 前記一対の短辺堰には、該一対の短辺堰
を前記一対の鋳造ロールの側線に沿って移動させる進退
手段をそれぞれ備えたことを特徴とする請求項１〜４の
いずれか１項に記載の薄板連続鋳造装置。5. The pair of short side weirs are respectively provided with advancing and retracting means for moving the pair of short side weirs along a lateral line of the pair of casting rolls. The thin plate continuous casting apparatus according to any one of claims. 【請求項６】 前記進退手段は、上下一対の直線駆動手
段によって構成したことを特徴とする請求項５記載の薄
板連続鋳造装置。6. The continuous thin plate casting apparatus according to claim 5, wherein the advancing / retreating means is composed of a pair of upper and lower linear driving means. 【請求項７】 前記一対の鋳造ロールが、一方向に長尺
でかつその中心軸方向の所定部から両端部に向かって縮
径された縮径部を有するロール胴体部と、該ロール胴体
部の前記縮径部に、少なくとも前記ロール胴体部の外周
面の材質に比し低熱伝導性の材料を、前記ロール胴体部
の縮径部を除く部位と同径状に被膜したロール表面部と
を有することを特徴とする請求項１〜６のいずれか１項
に記載の薄板連続鋳造装置。7. A roll body portion, wherein the pair of casting rolls are elongated in one direction and have a reduced diameter portion which is reduced in diameter from a predetermined portion in the central axis direction thereof toward both end portions, and the roll body portion. In the reduced diameter portion, at least a material having a low thermal conductivity compared to the material of the outer peripheral surface of the roll body portion, a roll surface portion coated with the same diameter as the portion of the roll body portion excluding the reduced diameter portion, It has, The thin plate continuous casting apparatus of any one of Claims 1-6 characterized by the above-mentioned. 【請求項８】 前記一対の短辺堰の上部又は下部を回動
中心として、該一対の短辺堰を、前記一対の鋳造ロール
の側線方向で、前記一対の短辺堰同士が近接又は離反す
る方向に僅少角度傾斜させる第１傾斜動工程と、 該第１傾斜動工程で所定角度傾斜された前記一対の短辺
堰の前記回動中心と反対側の下部又は上部を回動中心と
して、僅少角度傾斜させて、前記一対の短辺堰を前記第
１の傾斜動工程の移動方向と同一側に移動する第２傾斜
動工程とを備え、前記一対の鋳造ロールで連続鋳造され
る薄板の幅を変更制御することを特徴とする薄板連続鋳
造方法。8. The pair of short side weirs are moved toward or away from each other in the lateral direction of the pair of casting rolls with the upper portion or the lower portion of the pair of short side weirs as a rotation center. A first tilting step of tilting a small angle in the direction of rotation, and a lower or upper part on the opposite side of the turning center of the pair of short side dams tilted by a predetermined angle in the first tilting step as a turning center, A second tilt movement step of tilting the pair of short side weirs to the same side as the moving direction of the first tilt movement step by inclining by a slight angle, and of a thin plate continuously cast by the pair of casting rolls. A method for continuously casting thin plates, characterized by changing and controlling the width. 【請求項９】 前記第１傾斜動工程と第２傾斜動工程の
間に、前記一対の短辺堰をそのままの姿勢を保持して、
前記第１傾斜動工程の移動方向と同一側に平行移動する
平行移動工程を備えることを特徴とする請求項８記載の
薄板連続鋳造方法。9. The posture of the pair of short side dams is maintained as it is between the first tilting motion step and the second tilting motion step,
9. The thin plate continuous casting method according to claim 8, further comprising a parallel movement step of performing parallel movement on the same side as the movement direction of the first tilting movement step.
JP32800795A 1995-11-21 1995-11-21 Strip continuous caster and strip continuous casting process Withdrawn JPH09141400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32800795A JPH09141400A (en) 1995-11-21 1995-11-21 Strip continuous caster and strip continuous casting process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32800795A JPH09141400A (en) 1995-11-21 1995-11-21 Strip continuous caster and strip continuous casting process

Publications (1)

Publication Number Publication Date
JPH09141400A true JPH09141400A (en) 1997-06-03

Family

ID=18205476

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32800795A Withdrawn JPH09141400A (en) 1995-11-21 1995-11-21 Strip continuous caster and strip continuous casting process

Country Status (1)

Country Link
JP (1) JPH09141400A (en)

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