JPS61262453A - Improved tundish device - Google Patents

Abstract

PURPOSE:To supply a thin sheet having good quality at a low cost by providing a pouring nozzle to the pouring basin of a tundish, bringing the front end face of the nozzle into tight contact with the surfaces of cooling rolls under the required pressure or detaching said face from the roll surfaces, moving the nozzle to the required position and holding the same. CONSTITUTION:A horizontal stand 4 which moves the pouring basin 1 of the tundish having the front end face of the nozzle 1 in tight contact with a pair of rotary cooling rolls 7, 6 of which the upper roll is small in diameter and the lower roll is large in diameter, a cylinder mechanism 3 which is fixed at the shaft end to the rear end of the pouring basin 1 and is horizontally provided to the stand 4 and posts 18 which support the stand 4 and can be vertically moved by fine adjustment are provided to a device which uses the rolls 6, 7 as a mold and produces the thin metallic sheet by continuous casting. The mechanism 3 is actuated to bring the front end face of the tundish 11 into tight contact with the roll surfaces under the required pressure and to maintain the tundish position. The molten metal is then supplied between the rolls. The nozzle is otherwise detached from the roll surfaces and the molten metal is received in a back 5 provided in proximity to the lower part of the rolls 7, 6.

Description

【発明の詳細な説明】 〔産業の技術分野〕 本発明は、連続鋳造装置で大径と小径の１対の回転冷却
ロールをモールドとし、前記ロールに溶湯（以下、溶融
金属を溶湯と呼ぶ）を供給するノズルを密接させまたは
任意の位置にセットすることができ且つ移動または維持
をさせる架台をもつタンディツシュ装置の改良に関する
。[Detailed Description of the Invention] [Technical Field of Industry] The present invention uses a continuous casting device with a pair of rotating cooling rolls having a large diameter and a small diameter as a mold, and pours molten metal (hereinafter, molten metal is referred to as molten metal) into the rolls. This invention relates to an improvement in a tundish device having a stand which allows nozzles for supplying water to be set in close proximity or at arbitrary positions, and which can be moved or maintained.

〔在来の技術とその問題点〕[Conventional technology and its problems]

在来の連続鋳造でロールをそ−ルドとして溶湯を板状そ
の他の所要形状に凝固させるときく、単ロールまたは双
ロールを用いて行う。双ロールで、大径ロールと小径ロ
ールの１対の回転ロールをモールドとする場合も、在来
の溶湯供給タンディツシュ装置を改良して使用し良好か
品質をもつ凝固板を製造し且つ溶湯が漏れないように行
うことが重要である。このためには、冷却回転ロールに
密接させることができるノズルを備え、該ノズルを所要
の時に所要の位置に移動させまたはセットさせることが
でき、また支持するための架台をもたせることが求めら
れる。これらを合理的に行い安定操業するのは容易では
ない。例えば、冷却回転ロールと、該ロールに溶湯を供
給するタンディツシュのノズルとの接触面では、不良介
在物を除去した溶湯を靜かに供給し、溶湯漏れせず、良
好な表面を形成し、板厚の幅方向の均一性が得られるこ
となど、きわめて厳しい条件下で達成されなければなら
力い。在来の方法を使用した場合、寸法上は１／１０Ｉ
ＩＪ１以上の精度が必要であった。しかし商業的に使用
し得る耐火物は、その熱膨張および加工形状とその維持
の点で、このような精度を常時得ることは困難である。In conventional continuous casting, a single roll or twin rolls are used to solidify the molten metal into a plate or other desired shape using a cold roll. Even when a pair of rotating rolls (a large-diameter roll and a small-diameter roll) are used as a mold, a conventional molten metal supply tundish device can be modified and used to produce a solidified plate with good quality and prevent molten metal from leaking. It is important to do this so that it does not occur. To this end, it is required to have a nozzle that can be brought into close contact with the cooling rotating roll, to be able to move or set the nozzle to a desired position at a desired time, and to have a pedestal for support. It is not easy to do these things rationally and maintain stable operations. For example, at the contact surface between the cooling rotary roll and the nozzle of the tundish that supplies the molten metal to the roll, the molten metal from which defective inclusions have been removed is quietly supplied, the molten metal does not leak, a good surface is formed, and the plate This must be achieved under extremely strict conditions, including the ability to achieve widthwise uniformity of thickness. When using the conventional method, the size is 1/10I
Accuracy of IJ1 or higher was required. However, commercially available refractories have difficulty always achieving such precision in terms of their thermal expansion, processed shape, and maintenance.

前記の現状にかんがみ、溶湯をロールに供給するタンデ
ィツシュを改良し、所要時に所要位置にタンディツシュ
ノズル位置をセットし、ロール面に密接させ、離脱させ
、所要位置に移動させ、停止させ、これらを維持させる
。これらを合理的に行う基準を定め、溶湯が凝固すると
きにロール面で凝固板を最小圧で押圧させるときの該所
要最小押圧力の強さを定め、ロール面に接するノズル前
面の曲率の精度の向上、ノズルとロール間の間隔の維持
を容易に行い、ロールの位置の微量調整を可能にするな
どが、所要実施条件であシ、みたされなければならない
。In view of the above-mentioned current situation, the tundish nozzle that supplies molten metal to the rolls has been improved, and the tundish nozzle position can be set at the required position at the required time, brought into close contact with the roll surface, released, moved to the required position, stopped, and maintain it. We have established standards for rationally performing these steps, determined the strength of the required minimum pressing force when pressing the solidification plate with the minimum pressure on the roll surface when the molten metal solidifies, and determined the accuracy of the curvature of the nozzle front surface in contact with the roll surface. Improved performance, ease of maintaining the distance between the nozzle and the roll, and the ability to make small adjustments to the position of the rolls, etc., must be met as required implementation conditions.

〔問題点を解決するための技術的手段〕本発明は、前記
の在来技術の問題点を解決するのにノズルの適切な位置
の決定、その維持、架台の構造、架台上の移動機構、ロ
ールとノズルの密接もしくは離間およびトラブル時の残
溶湯の処理などに改良を加え、大径ロールと小径ロール
とをモールドとする連続鋳造による溶湯を凝固させた薄
板製造に適した給湯用タンディツシュ装置の設計と保全
維持をするための基準で合理的なものを提供することを
目的とする。本発明は、その目的を達成するために、給
湯用ノズルがロールに密接する該ノズル前面に円弧状曲
率に適合する高精度形状寸法を付し、該ノズルを付した
タンディツシュは水平架台で支持し、該架台を上下に作
動することができる微調整機構ｔ−設け、またトラブル
発生などの緊急時に残湯を受ける煉瓦パックを下ロール
（大径ロール）下方に接近させて設ける。[Technical Means for Solving the Problems] The present invention solves the problems of the above-mentioned conventional techniques by determining the appropriate position of the nozzle, its maintenance, the structure of the pedestal, the movement mechanism on the pedestal, A tundish device for hot water supply that is suitable for manufacturing thin plates by solidifying molten metal through continuous casting using large-diameter rolls and small-diameter rolls as a mold, with improvements in the closeness or separation of the rolls and nozzles and the treatment of residual molten metal in the event of trouble. The purpose is to provide reasonable standards for design, maintenance and maintenance. In order to achieve the object, the present invention provides a hot water supply nozzle with a high-precision shape and dimension that fits the arcuate curvature on the front surface of the nozzle that is in close contact with the roll, and a tundish with the nozzle attached is supported on a horizontal frame. A fine adjustment mechanism T- is provided which can move the frame up and down, and a brick pack is provided close to the bottom of the lower roll (large diameter roll) to receive the remaining hot water in case of an emergency such as trouble.

作業時にタンディツシュをロールに押接させるが、この
押えの最小所要力Ｐは、ロールとノズル前面の間の抵抗
を最小にするため次式が適用できる範囲とする。During work, the tundish is pressed against the roll, and the minimum required force P of this presser is set within a range to which the following equation can be applied in order to minimize the resistance between the roll and the nozzle front surface.

Ｐ＝（ρｘｄ２ｘｗ）ｘ１〜３ ここで、ρは溶湯密度、ｄは溶湯深さ、Ｗはノズル幅。P=(ρxd2xw)x1~3 Here, ρ is the molten metal density, d is the molten metal depth, and W is the nozzle width.

押え力Ｐは現実にロール面にかける圧力ではない計算上
の仮想値であシ、２０〜ｓｏｂ程度の範囲を基準とする
。The presser force P is not the pressure actually applied to the roll surface, but is a calculated virtual value, and is based on a range of about 20 to sob.

〔実施例〕〔Example〕

本発明を一実施例について図面に基づいて説明する。第
１図は本発明の一実施例の斜視図、第２因は１対ロール
とタンディツシュとバックとの応用実施例の関係位置を
示す一部拡大側面図である。An embodiment of the present invention will be explained based on the drawings. FIG. 1 is a perspective view of one embodiment of the present invention, and the second factor is a partially enlarged side view showing the relative positions of an applied embodiment of a pair of rolls, a tundish, and a bag.

一連の連続給湯による凝固板製造に、約３００Ｋｆのス
テンレス溶湯を使用した。タンディツシュ１０はロール
６と７から十分離した位置で、ノズルに図外適当な形状
寸法の断熱カバーを付した状態で、バーナーで１４００
℃まで加熱した。ノズルの幅はａｔｓｕｔ、溶湯深さ１
００　ｍに設定した。溶湯受入れのため、前記カバーを
外し、後部からエアシリンダー３で、タンディツシュ１
０を固着した台車１９とともに架台４上に備えたレール
２上を移動する。Approximately 300 Kf of molten stainless steel was used to manufacture the solidified plate through a series of continuous hot water supplies. The tanditsu 10 is placed at a sufficient distance from the rolls 6 and 7, and with a heat insulating cover of an appropriate shape and size attached to the nozzle, the burner is heated to 1,400 yen.
Heated to ℃. The width of the nozzle is atsut, the depth of the molten metal is 1
It was set at 00 m. To receive the molten metal, remove the cover and use the air cylinder 3 from the rear to insert the tundish 1.
It moves on the rail 2 provided on the pedestal 4 together with the trolley 19 to which 0 is fixed.

ロール６と７直前に位置する所まで進める。鋳込直前に
タンディツシュ１０′ｔ−下ロール６の面に密接する。Advance to the position just before rolls 6 and 7. Immediately before casting, the tundish 10' is brought into close contact with the surface of the lower roll 6.

ここでいう密接とは、ロール６の面と線面の弧状曲率に
適合した曲面を付したノズル１１の前端面とが、ロール
６０面に製造板表面に疵をつけない良好な表面を形成し
、溶湯を漏らさない間隙（零を含む）で幅方向全面で接
し、例えば第２図に示す間隙１２とｌ“４とが零以内で
ある場合である。The close contact here means that the surface of the roll 6 and the front end surface of the nozzle 11, which has a curved surface that matches the arcuate curvature of the linear surface, form a good surface on the surface of the roll 60 that does not cause scratches on the surface of the manufactured plate. , the entire width direction is in contact with each other at a gap (including zero) that does not leak the molten metal, and for example, the gap 12 and l"4 shown in FIG. 2 are within zero.

同様にロール７０面とノズル１１の上前端面とにもいう
ことができる。ノズル前端面に摺動するロール面との関
係を生ずる場合が考えられるが、この場合、ロール面に
疵を生じさせないようにし、もし生じても製造板表面に
疵を生じさせないものである。なお、摺動などで疵を発
生させないために、予めノズル端に微細耐火材粉体をコ
ーティングして用いる場合がある。The same can be said of the roll 70 surface and the upper front end surface of the nozzle 11. There may be cases where the front end surface of the nozzle is in contact with the sliding roll surface, but in this case, it is necessary to prevent scratches from occurring on the roll surface and, even if they occur, to prevent scratches from occurring on the manufacturing plate surface. Note that in order to prevent scratches from occurring due to sliding, etc., the nozzle end may be coated with fine refractory material powder in advance.

前記位置まで進め、鋳込直前にタンディツシュ１０のノ
ズル１１の前端面をロール６と７に押しあてるが、この
ときの押え圧力を６０Ｋｔとした。その後、う１湯する
までにタンディツシュ内温度は約１５０℃低下するが、
ノズル内部で凝固などによシ詰まりを発生することなく
進行し、約２鴎板厚の凝固ステンレス鋼薄板６０ｆｆｌ
が得られた。After advancing to the above position, the front end surface of the nozzle 11 of the tundish 10 was pressed against the rolls 6 and 7 immediately before casting, and the pressing pressure at this time was 60 Kt. After that, the temperature inside the tanditsu will drop by about 150℃ by the time you take another bath.
The process progresses without clogging due to solidification inside the nozzle, and solidified stainless steel thin plate 60ffl with a thickness of approximately 2 mm is produced.
was gotten.

第１図を説明すると、小径ロール７は駆動軸１７で回転
される上冷却ロールで、駆動軸１６で回転される下大径
ロール６との間に、タンディツシュ１Ｇにノズル１１を
付し、該タンデイツシ３−１０は、下部台車１９に装架
され、台車１９は支持架台４上面のレール２上を移動す
る。架台４に装着したシリンダー機構部３に圧空金入れ
、ピストン軸１３を作動し、軸１３端に固着したタンデ
ィツシュ１０の湯溜シ部ｌの後部を移動させる。架台４
は支柱１８をねじ８ｆ：もって取シ付けられ、ねじ８を
作動させて微調整し上下動させ、ロールとノズルとの密
着を良好にする。To explain FIG. 1, the small diameter roll 7 is an upper cooling roll rotated by a drive shaft 17, and a nozzle 11 is attached to the tundish 1G between the small diameter roll 7 and the lower large diameter roll 6 rotated by the drive shaft 16. The tandem tray 3-10 is mounted on a lower truck 19, and the truck 19 moves on the rail 2 on the upper surface of the support frame 4. A pneumatic metal holder is placed in a cylinder mechanism part 3 mounted on a pedestal 4, a piston shaft 13 is operated, and the rear part of a sump part l of a tundish 10 fixed to the end of the shaft 13 is moved. Frame 4
The support column 18 is attached with a screw 8f, and the screw 8 is actuated to make fine adjustments and move it up and down to improve the close contact between the roll and the nozzle.

残湯を受ける煉瓦バック５を下ロール６に接近して設置
する。残湯はシリンダー３に圧空ｔ−＾れ、ピストン軸
１３を引き、タンディツシュ１０をロール面から離し、
ノズル１１からバック５に受ける。A brick bag 5 for receiving the remaining hot water is installed close to the lower roll 6. The remaining hot water flows into the cylinder 3 with compressed air, pulls the piston shaft 13, and releases the tundish 10 from the roll surface.
It is received by the back 5 from the nozzle 11.

〔効果〕〔effect〕

本発明によれば、連続鋳造により回転冷却ロールで良好
な品質をもつ凝固薄板を製造することができた。給湯ノ
ズルをタンディツシュ湯溜シに付設し該ノズルの前端面
を冷却ロールの面に所要の圧力で密接しまたは離れさせ
所要位置に移動させ維持することができる。タンディツ
シュは台車に固着され、該台車は水平架台上に設けたレ
ール上をシリンダー機構を使用して移動することができ
る。前記水平架台は支柱に備えたねじで微調整しロール
面とノズル端面との密着を良好にすることができる。下
ロール下部に耐大物製バックを設はトラブル発生時の溶
湯を受けることができる。According to the present invention, a solidified thin plate with good quality could be produced by continuous casting using a rotating cooling roll. A hot water supply nozzle is attached to the tundish water reservoir, and the front end surface of the nozzle can be brought into close contact with or separated from the surface of the cooling roll with a required pressure, and moved to a desired position and maintained. The tundish is fixed to a truck, and the truck can be moved on rails provided on a horizontal pedestal using a cylinder mechanism. The horizontal pedestal can be finely adjusted using screws provided on the supports to improve the close contact between the roll surface and the nozzle end surface. A heavy-duty bag is installed at the bottom of the lower roll to catch molten metal in the event of trouble.

こうして、本発明は良質な薄板をコストを低く供給する
ことができる。Thus, the present invention can supply high-quality thin plates at low cost.

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

第１図は本発明の一実施例の斜視図、第２図は応用実施
例の一部拡大側面図。 １・・・タンディツシュ湯溜り　　２・・・レール３・
・・シリンダー機構　　　　１３・・・ピストン軸１２
、１４・・・ロール面とノズル前端面の間隙４・・・架
台１０・・・タンディツシュ５・・・バック　　　　　
１１・・・ノズル６．７・・・回転冷却ロール １６、１７・・・ロール駆動軸 ８・・・微調整用ねじ １Ｂ・・・支柱 １９・・・台車FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a partially enlarged side view of an applied embodiment. 1...Tanditshu hot water pool 2...Rail 3.
... Cylinder mechanism 13 ... Piston shaft 12
, 14... Gap between roll surface and nozzle front end surface 4... Frame 10... Tandish 5... Back
11... Nozzle 6.7... Rotating cooling rolls 16, 17... Roll drive shaft 8... Fine adjustment screw 1B... Support column 19... Cart

Claims (1)

【特許請求の範囲】 １　上部小径のおよび下部大径の１対の回転冷却ロール
をモールドとし連続鋳造して金属薄板を製造するための
給湯をするものにおいて、前記冷却ロールに密接するノ
ズル前端面を備えたタンディッシュ湯溜りを移動させる
水平架台と、前記湯溜り後端に軸端を固着し水平架台に
水平に設けたシリンダー機構と、前記水平架台を支持し
微量調整で上下動可能に設けた支柱とを備え、シリンダ
ー機構を作動し、タンディッシュノズ ル前端面をロール面に所要圧力で密接させ該タンディッ
シュ位置を維持しロール間に溶湯を供給しまたは離れさ
せて溶湯をロール下部に近接して設けたバックに受ける
ことを特徴とした改良されたタンディッシュ装置。 ２　タンディッシュノズル前端面をロール面に密接させ
る所要圧力は、Ｐ＝（ρｄ＾２×Ｗ）×１〜３式で表わ
される範囲とする（ただし式中のｄは溶湯深さ、ρは溶
湯比重、Ｗはノズル幅を表わしＰはｋｇ単位である）特
許請求の範囲の第１項に記載の改良されたタンディッシ
ュ装置。 ３　水平架台上をタンディッシュが移動するためにタン
ディッシュを台車にのせて設け水平架台上にレールを備
えた特許請求の範囲の第１項に記載の改良されたタンデ
ィッシュ装置。 ４　水平架台を上下させる微調整は支柱の装着部に螺動
させて上下動させるねじを設けた特許請求の範囲の第１
項に記載の改良されたタンディッシュ装置。[Scope of Claims] 1. In an apparatus for supplying hot water for manufacturing a thin metal sheet by continuous casting using a pair of rotating cooling rolls with a small diameter at the top and a large diameter at the bottom, a front end face of a nozzle that is in close contact with the cooling roll. a horizontal pedestal for moving a tundish basin, a cylinder mechanism having a shaft end fixed to the rear end of the tundish basin and installed horizontally on the horizontal pedestal; The cylinder mechanism is operated to bring the front end surface of the tundish nozzle into close contact with the roll surface with a required pressure, maintain the tundish position, and supply the molten metal between the rolls or separate the rolls to bring the molten metal close to the bottom of the rolls. An improved tundish device characterized by being received by a back provided with a tundish. 2 The required pressure to bring the front end surface of the tundish nozzle into close contact with the roll surface shall be within the range expressed by the formula P = (ρd^2 x W) x 1 to 3 (where d is the molten metal depth and ρ is the molten metal Specific gravity, W represents the nozzle width and P is in kg) Improved tundish device according to claim 1. 3. The improved tundish device according to claim 1, wherein the tundish is mounted on a cart so that the tundish moves on the horizontal mount, and a rail is provided on the horizontal mount. 4 Fine adjustment to move the horizontal frame up and down is achieved by the first claim of claim 1, in which a screw is provided in the mounting part of the support column to move it up and down.
Improved tundish apparatus as described in Section.