JP6511969B2

JP6511969B2 - Twin roll vertical casting machine

Info

Publication number: JP6511969B2
Application number: JP2015113157A
Authority: JP
Inventors: 志賀　英俊; 英俊志賀; 貴也山口; 文夫佐久間; 達也増田; 大塚　真司; 真司大塚
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 2015-06-03
Filing date: 2015-06-03
Publication date: 2019-05-15
Anticipated expiration: 2035-06-03
Also published as: JP2016221568A

Description

本発明は、双ロール式縦型鋳造装置に関するものである。 The present invention relates to a twin-roll type vertical casting equipment.

鋼板を鋳造する双ドラム連鋳において、軸が平行で互いに逆方向に回転する一対の冷却ドラムとサイド堰で形成される湯溜部に溶鋼を注入し、この冷却ドラムの周面で溶鋼を冷却・凝固し、凝固シェルを生成しつつ薄肉鋳片を連続鋳造するものが知られている（特許文献１）。この種の連続鋳造においては、一対の冷却ドラムの両端面に、サイド堰を押し付け、冷却ドラムの回転によりサイド堰耐火物（ＡｌＮなどアルミニウムを含有する窒化物又はＳｉＡｌＯＮなどアルミニウムを含有する酸窒化物）を摩耗せしめて、冷却ドラムとサイド堰のシール状態を維持し、溶鋼の湯漏れを防止している。以下、本発明の構成部材に対応させるために、双ドラム連鋳を双ロール鋳造、冷却ドラムを鋳造ロール、サイド堰を側堰板、湯溜部を溶湯ノズル、溶鋼を溶湯と称する。 In twin-drum continuous casting for casting steel plates, molten steel is injected into a reservoir formed by a pair of cooling drums with parallel axes and rotating in opposite directions and a side weir, and the molten steel is cooled by the circumferential surface of this cooling drum * What solidifies and thins a cast slab continuously while producing | generating a solidified shell is known (patent document 1). In this type of continuous casting, side wedges are pressed against both end surfaces of a pair of cooling drums, and by rotating the cooling drums, side crucible refractories (nitrides containing aluminum such as AlN or oxynitrides containing aluminum such as SiAlON) ) To maintain the seal between the cooling drum and the side weir to prevent the molten steel from leaking. Hereinafter, in order to correspond to the constituent members of the present invention, twin-drum continuous casting is referred to as twin-roll casting, cooling drums as casting rolls, side weirs as weir plates, weir parts as melt nozzles and molten steel as melt.

特開２００５−３０５４８８号公報JP 2005-305488 A

双ロール鋳造において、側堰板は金属溶湯と直接触れることから耐熱性や保温性が求められ、かつ、側堰板と鋳造ロールとの接触部から溶湯が漏れないようにするために、側堰板は鋳造ロールとの摺動面に押し付けられる。このため、金属溶湯による熱負荷と浸食と摩耗とが同時に起きることから、１〜２回の鋳造で側堰板を交換する必要がある。 In twin roll casting, the side plate is in direct contact with the molten metal, so heat resistance and heat retention are required, and in order to prevent the molten metal from leaking from the contact portion between the side plate and the casting roll, the side plate is The plate is pressed against the sliding surface with the casting roll. For this reason, since the heat load by metal melt, erosion, and wear occur simultaneously, it is necessary to replace the side plate by casting once or twice.

本発明が解決しようとする課題は、耐熱性とシール性を維持しつつ側堰板の交換頻度を少なくできる双ロール式縦型鋳造装置を提供することである。 An object of the present invention is to provide is to provide a twin-roll type vertical casting equipment that can reduce the frequency of replacement of the side dam plate while maintaining heat resistance and sealability.

本発明は、鋳造ロールの円周面の端面に環状凹部と、この端面から突出するように凹部に側堰板と同等の耐熱性及び側堰板に比べて柔軟性を有する環状のシール部材とを設け、側堰板の主堰板に密接する側の表層面をアルミニウム系材料の融点又は液相温度に耐え得る耐摩耗性及び／又は耐剥離性並びに耐熱性を有する硬質材料から形成し、かつ鋳造ロールの端面に対しては無負荷の状態で、またシール部材に対しては押圧した状態で設けることによって上記課題を解決する。 The present invention comprises an annular recess at the end face of the circumferential surface of the casting roll, and an annular seal member having heat resistance equivalent to that of the side sheath plate and flexibility compared to the side sheath plate at the recess so as to protrude from this end face Forming a surface layer on the side in close contact with the main cover plate of the side cover plate from a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material ; And the said subject is solved by providing in the state which is not loaded with respect to the end surface of a casting roll, and with respect to a sealing member.

本発明では、鋳造ロールの円周面の端面から突出させて設けた、側堰板と同等の耐熱性及び側堰板に比べて柔軟性を有する環状のシール部材により、鋳造ロールと側堰板との間がシールされる一方、表層面をアルミニウム系材料の融点又は液相温度に耐え得る耐摩耗性及び／又は耐剥離性並びに耐熱性を有する硬質材料から形成した側堰板により、側堰板の摩耗を抑制することができる。そして、シール部材を交換すれば品質が安定するから、側堰板の交換頻度を少なくすることができる。 In the present invention, the casting roll and the side covering plate are provided by the annular seal member having heat resistance equivalent to the side covering plate and having flexibility as compared with the side covering plate, provided protruding from the end face of the circumferential surface of the casting roll. And a side plate made of a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material while being sealed. The wear of the plate can be suppressed. And since the quality is stabilized if the sealing member is replaced, the replacement frequency of the side weir plate can be reduced.

本発明に係る双ロール式縦型鋳造装置の第１実施形態を示す側面図である。It is a side view showing a 1st embodiment of a twin roll type vertical casting device concerning the present invention. 図１Ａの主要部分の断面図である。It is sectional drawing of the principal part of FIG. 1A. 図１Ａの平面図である。It is a top view of FIG. 1A. 図１Ａの鋳造ロールを示す斜視図である。It is a perspective view which shows the casting roll of FIG. 1A. 図３Ａの縦断面図である。It is a longitudinal cross-sectional view of FIG. 3A. 図３Ｂのシール部材の一例を示す正面図である。It is a front view which shows an example of the sealing member of FIG. 3B. 図３Ｂのシール部材の他例を示す正面図である。It is a front view which shows the other example of the sealing member of FIG. 3B. 図３Ｂのシール部材の凹部への配置の他例を示す正面図である。It is a front view which shows the other example of arrangement | positioning to the recessed part of the sealing member of FIG. 3B. 図５ＡのＶＢ−ＶＢ線に沿う断面図である。It is sectional drawing which follows the VB-VB line of FIG. 5A. 図３Ｂのシール部材の凹部への配置のさらに他の例を示す断面図である。It is sectional drawing which shows the further another example of arrangement | positioning to the recessed part of the sealing member of FIG. 3B. 本発明に係る双ロール式縦型鋳造装置の第２実施形態を示す側面図である。It is a side view showing a 2nd embodiment of a twin roll type vertical casting device concerning the present invention. 図７の平面図である。It is a top view of FIG. 本発明に係る双ロール式縦型鋳造装置の第３実施形態を示す側面図である。It is a side view showing a 3rd embodiment of a twin roll type vertical casting device concerning the present invention. 図９の平面図である。It is a top view of FIG.

以下、本発明の一実施の形態を図面に基づいて説明する。図１Ａは、本発明に係る双ロール式縦型鋳造装置の第１実施形態を示す側面図、図２は、図１Ａの平面図である。本実施形態の双ロール式縦型鋳造装置１は、溶解されたアルミニウム系材料を、特に限定はされないが例えば１０００℃／秒以上の冷却速度で冷間圧延し、所定厚さｔ、所定幅Ｗ及び所定長Ｌのシート２に製造するための鋳造装置である。冷却速度を大きくすることで不純物が含まれていても大きく成長せず、また生産性も高いという利点がある。鋳造原料となるアルミニウム系材料としては、特に限定されないが例えば、アルミニウムのほか、アルミニウム・シリコン合金、アルミニウム・シリコン・マグネシウム合金その他のアルミニウム合金が含まれる。これらアルミニウム系材料の融点又は液相温度は、概ね５８０〜６７０℃である。 Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1A is a side view showing a first embodiment of a twin roll vertical casting apparatus according to the present invention, and FIG. 2 is a plan view of FIG. 1A. The twin-roll type vertical casting apparatus 1 of the present embodiment cold-rolls the melted aluminum-based material at a cooling rate of, for example, 1000 ° C./sec or more, but is not particularly limited. And a casting apparatus for producing the sheet 2 of a predetermined length L. By increasing the cooling rate, even if the impurities are contained, there is an advantage that they do not grow large and the productivity is also high. The aluminum-based material as a casting material is not particularly limited, and includes, for example, aluminum, silicon, aluminum, silicon, magnesium, and other aluminum alloys in addition to aluminum. The melting point or liquidus temperature of these aluminum-based materials is approximately 580 to 670 ° C.

本実施形態の双ロール式縦型鋳造装置１は、所定のロールギャップ１３をもって対向配置された一対の鋳造ロール１１，１２と、当該一対の鋳造ロール１１，１２のロールギャップ１３の上方に配置され、アルミニウム系材料の溶湯５を受容する溶湯ノズル１４と、アルミニウム系材料の溶湯５を収容し当該溶湯５を溶湯ノズル１４に注湯するレードル１５と、を備える。なお、図１Ａには図示を省略するが、溶湯ノズル１４からロールギャップ１３を通過する溶湯５が、弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力を推定する反力推定器と、この反力推定器により推定された反力に応じて一対の鋳造ロール１１，１２がロールギャップ１３を通過する溶湯５から受ける単位時間当たりの受熱量を制御する制御ユニットとを設けてもよい。図２に示すように、一対の鋳造ロール１１，１２と、溶湯ノズル１４と、レードル１５とは、それぞれの幅方向の中心軸ＣＬが一致するように配置されている。 The twin-roll vertical casting apparatus 1 of the present embodiment is disposed above the pair of casting rolls 11 and 12 opposed to each other with a predetermined roll gap 13 and the roll gap 13 of the pair of casting rolls 11 and 12. A melt nozzle 14 for receiving the melt 5 of the aluminum-based material; and a ladle 15 for containing the melt 5 of the aluminum-based material and pouring the melt 5 into the melt nozzle 14. Although not shown in FIG. 1A, the reaction force is estimated to estimate the reaction force that the molten metal 5 passing through the roll gap 13 from the molten metal nozzle 14 tries to push the roll gap 13 against the elastic bias. A control unit for controlling the amount of heat received per unit time received by the pair of casting rolls 11 and 12 from the molten metal 5 passing through the roll gap 13 in accordance with the reaction force estimated by the reaction force estimator. It is also good. As shown in FIG. 2, the pair of casting rolls 11 and 12, the molten metal nozzle 14, and the ladle 15 are arranged such that the central axes CL in the width direction coincide with each other.

一対の鋳造ロール１１，１２は、架台４に搭載され、一方の鋳造ロール１１は、回転軸１１１を中心にして回転するように設けられ、他方の鋳造ロール１２は、回転軸１１１に平行な回転軸１２１を中心にして回転するように設けられている。本実施形態における一方の鋳造ロール１１は、架台４に対して位置が固定され、他方の鋳造ロール１２は、スライドレール４１を介して一方の鋳造ロール１１に対して水平方向に接近及び離反移動が可能とされている。当該他方の鋳造ロール１２は、一方の鋳造ロール１１に向かう方向にばね又は流体圧シリンダなどの弾性体１２２により弾性付勢されているが、最も接近した際のロールギャップ１３は、目的とするシート２の板厚ｔに応じたゼロを超える所定値、特に限定されないが例えば、０．５〜３ｍｍに設定されている。なお、一対の鋳造ロール１１，１２の両者を、架台４に対して互いに接近及び離反移動が可能に構成してもよい。 The pair of casting rolls 11 and 12 are mounted on the gantry 4, and one casting roll 11 is provided to rotate around the rotation axis 111, and the other casting roll 12 is rotated in parallel with the rotation axis 111. It is provided to rotate about an axis 121. The position of one casting roll 11 in the present embodiment is fixed with respect to the rack 4, and the other casting roll 12 moves horizontally toward and away from the one casting roll 11 via the slide rail 41. It is made possible. The other casting roll 12 is resiliently biased by an elastic body 122 such as a spring or a fluid pressure cylinder in the direction toward one casting roll 11, but the roll gap 13 at the closest position is the target sheet The predetermined value exceeding zero according to the thickness t of 2 is set to 0.5 to 3 mm, for example, although not particularly limited. In addition, both of the pair of casting rolls 11 and 12 may be configured to be able to move toward and away from the gantry 4.

一対の鋳造ロール１１，１２は、互いに等しい周速度で回転するように、プーリ及びベルトなどの伝達機構を介して回転駆動モータ１１２に接続されている。本実施形態の鋳造ロール１１，１２は、外径が等しくされているので、一つの回転駆動モータ１１２により互いに逆方向、すなわちロールギャップ１３において溶湯５を鉛直下方向へ押し下げる力が作用するように等しい周速度で回転する。図１Ａ及び図１Ｂに示す例においては、一方の鋳造ロール１１は反時計方向に回転し、他方の鋳造ロール１２は時計方向に回転する。なお図示は省略するが、回転駆動モータ１１２は、出力軸の回転速度を可変とするインバータ装置により回転速度が制御され、当該インバータ装置は制御ユニットからの制御指令により制御される。 The pair of casting rolls 11 and 12 are connected to the rotary drive motor 112 via transmission mechanisms such as pulleys and belts so as to rotate at equal circumferential speeds. Since the casting rolls 11 and 12 of the present embodiment have the same outer diameter, a single rotational drive motor 112 exerts a force that pushes down the molten metal 5 in the opposite directions, that is, the roll gap 13 in the vertical downward direction. Rotate at equal circumferential speed. In the example shown in FIGS. 1A and 1B, one casting roll 11 rotates counterclockwise and the other casting roll 12 rotates clockwise. Although illustration is omitted, the rotational speed of the rotary drive motor 112 is controlled by an inverter device that makes the rotational speed of the output shaft variable, and the inverter device is controlled by a control command from the control unit.

ちなみに、一対の鋳造ロール１１，１２の外径を等しくすれば、変速機構を設けることなく一つの回転駆動モータ１１２により等しい周速度で回転させることができる。また、一対の鋳造ロール１１，１２の外径を等しくし、後述する溶湯ノズル１４の主堰板１４１，１４２の中心をロールギャップ１３の中心に一致させれば、溶湯ノズル１４の下端の溶湯５と鋳造ロール１１，１２との接触面１１３，１２３の面積が等しくなるので、鋳造されるシートの表裏における冷却速度が均等になる。ただし、本発明の一対の鋳造ロール１１，１２は、周速度が等しければ異なる外径であってもよい。この場合に、溶湯ノズル１４の下端の溶湯５と鋳造ロール１１，１２との接触面１１３，１２３の面積を等しくするためには、溶湯ノズル１４の主堰板１４１，１４２の中心の位置をロールギャップ１３の中心に対してどちらかにずらせばよい。 By the way, if the outer diameters of the pair of casting rolls 11 and 12 are equalized, one rotation drive motor 112 can be rotated at an equal peripheral speed without providing a transmission mechanism. Further, if the outer diameters of the pair of casting rolls 11 and 12 are made equal, and the centers of the main cover plates 141 and 142 of the molten metal nozzle 14 described later coincide with the centers of the roll gap 13, the molten metal 5 at the lower end of the molten metal nozzle 14 Since the areas of the contact surfaces 113 and 123 of the sheet and the casting rolls 11 and 12 become equal, the cooling rates on the front and back of the sheet to be cast become even. However, the pair of casting rolls 11 and 12 of the present invention may have different outer diameters as long as the peripheral speeds are equal. In this case, in order to equalize the areas of the contact surfaces 113 and 123 between the molten metal 5 at the lower end of the molten metal nozzle 14 and the casting rolls 11 and 12, the center position of the main cover plates 141 and 142 of the molten metal nozzle 14 is The center of the gap 13 may be shifted in either direction.

一対の鋳造ロール１１，１２は、回転軸１１１，１２１の両端部にそれぞれ固定されたハブ１１４，１２４に熱伝導性が良好な銅などの金属板１１５，１２５を固定することにより構成されている。金属板１１５，１２５の内部の一部又は全部には、冷媒が循環する循環系統が設けられ、少なくとも溶湯５との接触面１１３，１２３（以下、これらの接触面１１３，１２３を成形面１１６，１２６ともいい、その回転軸１１１，１２１方向の長さをＷ_Ｒという。）の裏面の金属板１１５，１２５に冷媒が接触するように、スプレーノズルが設けられたり、あるいは金属板１１５，１２５の内部の一部又は全体が冷媒の流路とされている。本実施形態の一対の鋳造ロール１１，１２のそれぞれは、少なくとも溶湯５が接触する鋳造ロールの接触面１１３，１２３の温度を調節する温度調節器を含んでもよい。 The pair of casting rolls 11 and 12 is configured by fixing metal plates 115 and 125 such as copper having good thermal conductivity to hubs 114 and 124 fixed to both ends of the rotating shafts 111 and 121, respectively. . A circulating system through which the refrigerant circulates is provided in a part or all of the inside of the metal plates 115 and 125, and at least the contact surfaces 113 and 123 with the molten metal 5 (hereinafter, these contact surfaces 113 and 123 are formed surfaces 116, 126 and good, its rotation axis 111, 121 direction length of _{W R.)} so that the refrigerant on the back surface of the metal plate 115, 125 to contact, or spray nozzle is provided, or a metal plate 115, 125 A part or the whole of the inside is taken as a refrigerant flow path. Each of the pair of casting rolls 11 and 12 of the present embodiment may include a temperature controller that regulates the temperature of at least the contact surfaces 113 and 123 of the casting rolls with which the molten metal 5 contacts.

本実施形態の鋳造ロール１１，１２は、図３Ａ及び図３Ｂに示すように、成形面１１６，１２６を構成する円周面の両端面のそれぞれに、円周方向に沿って環状凹部１１７，１２７が形成されている。図３Ａは、図１Ａの鋳造ロール１１を示す斜視図、図３Ｂは、図３Ａの縦断面図である。この環状凹部１１７，１２７には、両端面から突出するようにシール部材１１８，１２８が設けられている。本実施形態に係るシール部材１１８，１２８は、後述する側堰板１４３，１４４と同等の耐熱性を有するが、側堰板１４３，１４４に比べて柔軟性を有するセラミック製部材により構成されている。なお、環状凹部１１７，１２７及びこれに設けるシール部材１１８，１２８は、一対の鋳造ロール１１，１２の少なくとも一方の鋳造ロールの、少なくとも一方の端面に設ければ、後述する本実施形態に係る作用効果を奏するが、一対の鋳造ロール１１，１２のそれぞれの一方の端面に設けると、これに当接する一方の側堰板１４３又は１４４の交換頻度が少なくなる。さらに、本実施形態のように、一対の鋳造ロール１１，１２のそれぞれの両端面に設けることで、これに当接する一対の側堰板１４３，１４４の交換頻度が少なくなる。 As shown in FIGS. 3A and 3B, the casting rolls 11 and 12 of the present embodiment have annular concave portions 117 and 127 along the circumferential direction on both end faces of the circumferential surface constituting the forming surfaces 116 and 126, respectively. Is formed. FIG. 3A is a perspective view showing the casting roll 11 of FIG. 1A, and FIG. 3B is a longitudinal sectional view of FIG. 3A. Sealing members 118 and 128 are provided in the annular recessed portions 117 and 127 so as to protrude from both end surfaces. The seal members 118 and 128 according to the present embodiment have the same heat resistance as side weir plates 143 and 144 described later, but are made of a ceramic member having flexibility as compared with the side weir plates 143 and 144. . When the annular concave portions 117 and 127 and the seal members 118 and 128 provided thereon are provided on at least one end face of at least one of the pair of casting rolls 11 and 12, the operation according to the embodiment described later Although the effect is achieved, when provided on one end face of each of the pair of casting rolls 11, 12, the frequency of replacement of one side weir plate 143 or 144 in contact with this is reduced. Furthermore, as in the present embodiment, by providing the both end faces of the pair of casting rolls 11, 12, the frequency of replacement of the pair of side weir plates 143, 144 in contact with this is reduced.

シール部材１１８，１２８は、環状凹部１１７，１２７に嵌合させたり、接着剤やボルトなどの固定手段を用いて着脱可能に設けることが好ましい。また、シール部材１１８，１２８を環状凹部１１７，１２７に設ける際に、鋳造ロール１１，１２の端面から突出させるのは、側堰板１４３，１４４がシール部材１１８，１２８のみに押圧接触し、鋳造ロール１１，１２の端面とは無負荷の状態とするためである。これにより、側堰板１４３，１４４は、鋳造ロール１１，１２と共に回転するシール部材１１８，１２８のみと摺動することになり、しかも後述するように側堰板１４３，１４４はシール部材１１８，１２８より硬質な材料から構成されているので、側堰板１４３，１４４とシール部材１１８，１２８とが摺動するとシール部材１１８，１２８の方が摩耗量が大きくなる。したがって、長時間の稼働を行ってもシール部材１１８，１２８を交換するだけで足りるので側堰板１４３，１４４の交換頻度が少なくなる。 Preferably, the sealing members 118 and 128 are detachably provided by fitting them in the annular recesses 117 and 127 or using a fixing means such as an adhesive or a bolt. Further, when the seal members 118 and 128 are provided in the annular concave portions 117 and 127, the side weir plates 143 and 144 are in pressure contact with only the seal members 118 and 128 so as to project from the end faces of the casting rolls 11 and 12 The end surfaces of the rolls 11 and 12 are for no load. As a result, the side weir plates 143 and 144 slide only with the seal members 118 and 128 rotating together with the casting rolls 11 and 12, and as described later, the side weir plates 143 and 144 are seal members 118 and 128. As the side wedge plates 143 and 144 and the seal members 118 and 128 slide, the amount of wear of the seal members 118 and 128 is larger because they are made of a harder material. Therefore, even if the operation is performed for a long time, it is sufficient to replace the seal members 118 and 128, and hence the replacement frequency of the side anchor plates 143 and 144 is reduced.

シール部材１１８，１２８は、図４Ａに示すように無端環状に形成してもよいが、図４Ｂに示すように有端環状に形成してもよい。シール部材１１８，１２８を図４Ｂに示すように、有端環状に形成する場合には、切断されて対向する端面ａ，ｂが、鋳造ロール１１，１２の端面の半径方向に対して少なくとも部分的に重なり合うように構成することが望ましい。こうすることで、図４Ｂに示すαの範囲においては、端面ａ，ｂが半径方向に重なり合っているので、側堰板１４３，１４４との押圧接触面のシール性、すなわち溶湯５の漏れを防止することができる。また、シール部材１１８，１２８を有端環状に形成すると、これを交換する際に、鋳造ロール１１，１２自体を取り外すことなくシール部材１１８，１２８を着脱することができる。なおこうした作用効果を奏する限り、シール部材１１８，１２８を有端環状に形成する際には、図４Ｂに示す一対の端面ａ，ｂのみに限らず、二対以上の端面を有する有端環状に形成してもよい。 The seal members 118 and 128 may be formed in an endless annular shape as shown in FIG. 4A, but may be formed in a closed annular shape as shown in FIG. 4B. When the sealing members 118 and 128 are formed in an end-to-end annular shape as shown in FIG. 4B, the cut and opposed end faces a and b are at least partially in the radial direction of the end faces of the casting rolls 11 and 12. It is desirable to configure them so as to overlap each other. By doing this, in the range of α shown in FIG. 4B, the end faces a and b overlap in the radial direction, so the sealing property of the pressure contact surface with the side weir plates 143 and 144, ie, the leakage of the molten metal 5 is prevented. can do. In addition, when the seal members 118 and 128 are formed in a ring shape with an end, when replacing them, the seal members 118 and 128 can be attached and detached without removing the casting rolls 11 and 12 themselves. In addition, when forming the sealing members 118 and 128 in a closed loop, as long as the above-described effects are exhibited, the sealing members 118 and 128 are not limited to only the pair of end faces a and b shown in FIG. You may form.

シール部材１１８，１２８は、鋳造ロール１１，１２の端面の環状凹部１１７，１２７と同じ幅に形成し、当該環状凹部１１７，１２７に嵌合させてもよいが、環状凹部１１７，１２７の幅より小さい幅に形成してもよい。この場合のシール部材１１８，１２８は、図５Ａ及び図５Ｂに示すように、環状凹部１１７，１２７の外側壁面に押圧された状態で設けることが望ましい。図５Ａは、図３Ｂのシール部材１１８，１２８の環状凹部１１７，１２７への配置の他例を示す正面図、図５Ｂは、図５ＡのＶＢ−ＶＢ線に沿う断面図である。図示する例においては、板バネや弾性体などで構成された押圧部材１１９によりシール部材１１８は環状凹部１１７の外側の壁面に押圧された状態で保持されている。なお、他方の鋳造ロール１２の環状凹部１２７に設けるシール部材１２８についても同様の構成とされている。シール部材１１８，１２８の幅を環状凹部１１７，１２７の幅より小さくした場合に、シール部材１１８，１２８を環状凹部１１７，１２７の外側壁面に押圧された状態で設けることで、環状凹部１１７，１２７に溶湯５が浸入するのを防止することができる。 The seal members 118 and 128 may be formed to have the same width as the annular recesses 117 and 127 of the end faces of the casting rolls 11 and 12, and may be fitted into the annular recesses 117 and 127, but the widths of the annular recesses 117 and 127 You may form in small width. In this case, as shown in FIGS. 5A and 5B, it is desirable that the seal members 118 and 128 be provided in a state where they are pressed against the outer wall surfaces of the annular recesses 117 and 127. 5A is a front view showing another example of the arrangement of the seal members 118 and 128 in FIG. 3B in the annular recesses 117 and 127, and FIG. 5B is a cross-sectional view along the line VB-VB in FIG. 5A. In the illustrated example, the seal member 118 is held in a state of being pressed against the outer wall surface of the annular recess 117 by the pressing member 119 formed of a plate spring, an elastic body or the like. The seal member 128 provided in the annular recess 127 of the other casting roll 12 has the same configuration. When the width of the seal member 118, 128 is smaller than the width of the annular recess 117, 127, the annular recess 117, 127 is provided by pressing the seal member 118, 128 against the outer wall surface of the annular recess 117, 127. The molten metal 5 can be prevented from infiltrating.

また本実施形態のシール部材１１８，１２８は、図６に示すように、環状凹部１１７，１２７の外側の壁面のみならず底面にについても押圧された状態で設けられていてもよい。図示する例においては、シール部材１１８は、ボルトＢにより環状凹部１１７の外側の壁面及び底面に押圧された状態で保持されている。 Further, as shown in FIG. 6, the seal members 118 and 128 of the present embodiment may be provided in a state where they are pressed not only on the outer wall surfaces of the annular concave portions 117 and 127 but also on the bottom surface. In the illustrated example, the seal member 118 is held pressed by the bolt B against the outer wall surface and the bottom surface of the annular recess 117.

図１Ａ及び図２に戻り、本実施形態の溶湯ノズル１４は、一対の鋳造ロール１１，１２の回転軸１１１，１２１と平行に対向配置された一対の主堰板１４１，１４２と、回転軸１１１，１２１と直交して対向配置されるとともに一対の主堰板１４１，１４２の両端面に密接された一対の側堰板１４３，１４４とを含んで構成されている。すなわち、本実施形態の溶湯ノズル１４は、４つの側面を有し、上面と下面がそれぞれ開口した矩形筒体とされている。 Referring back to FIG. 1A and FIG. 2, the molten metal nozzle 14 according to the present embodiment includes a pair of main base plates 141 and 142 disposed opposite to each other in parallel with the rotating shafts 111 and 121 of the pair of casting rolls 11 and 12; , 121, and includes a pair of side weir plates 143 and 144 that are disposed opposite to each other and are in close contact with both end faces of the pair of main weir plates 141 and 142. That is, the molten metal nozzle 14 of the present embodiment has four side surfaces, and is formed as a rectangular cylinder whose upper and lower surfaces are open.

一対の主堰板１４１，１４２は、アルミニウム系材料の融点又は液相温度に耐え得る耐熱性を有するセラミックス製板材を基材とし、その表面（少なくとも主堰板と側堰板とで囲まれる内面）に、同等の耐熱性を有する断熱材層が形成されてなる。そして、一対の主堰板１４１，１４２の下端が、上述した一対の鋳造ロール１１，１２の表面に接触又は僅かな隙間をあけて設けられている。なお、他方の鋳造ロール１２の接触面１２３に接触又は僅かな隙間をあけて設けられる主堰板１４１には、当該他方の鋳造ロール１２が架台４に対して水平方向に移動する際においても、他方の鋳造ロール１２の接触面１２３との接触又は僅かな隙間を維持するように引張り弾性体１４７が設けられている。これに対して、一方の鋳造ロール１１の接触面１１３に接触又は僅かな隙間をあけて設けられる主堰板１４２は、図示はしないが架台４に対して位置が固定されている。 The pair of main inlaying plates 141 and 142 uses a ceramic plate material having heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material as a base material, and the inner surface thereof (at least the inner surface surrounded by the main inlaying plate and the side insulating plate In the above, a heat insulating material layer having the same heat resistance is formed. The lower ends of the pair of main weir plates 141 and 142 are provided in contact with the surfaces of the pair of casting rolls 11 and 12 or with a slight gap therebetween. In addition, even when the other casting roll 12 is moved in the horizontal direction with respect to the gantry 4 on the main cover plate 141 provided in contact with the contact surface 123 of the other casting roll 12 or with a slight gap. A tensile elastic body 147 is provided to maintain contact with the contact surface 123 of the other casting roll 12 or a slight gap. On the other hand, the main weir plate 142 provided in contact with the contact surface 113 of one of the casting rolls 11 or with a slight gap is fixed in position with respect to the gantry 4 although not shown.

これに対し、一対の側堰板１４３，１４４は、図２の平面図及び図３Ｂの断面図に示すように、一対の主堰板１４１，１４２の側縁と、一対の鋳造ロール１１，１２の環状凹部１１７，１２７に設けられたシール部材１１８，１２８に、押圧弾性体１４５，１４６を介して当接する。すなわち、図２に示すように、主堰板１４１，１４２の幅方向の長さＷ_Ｎは鋳造ロール１１，１２の幅方向の長さ（成形面１１６，１２６の回転軸方向の長さ）Ｗ_Ｒとほぼ等しく形成され、一対の側堰板１４３，１４４は、これら一対の主堰板１４１，１４２と、一対の鋳造ロール１１，１２の環状凹部１１７，１２７に設けられたシール部材１１８，１２８とに押圧されている。これにより、一対の主堰板１４１，１４２、一対の側堰板１４３，１４４及び一対の鋳造ロール１１，１２のロールギャップ１３の近傍（接触面１１３，１２３）とで囲まれた空間に溶湯５が受容されることになる。 On the other hand, as shown in the plan view of FIG. 2 and the cross-sectional view of FIG. 3B, the pair of side weir plates 143 and 144 includes the side edges of the pair of main weir plates 141 and 142 and the pair of casting rolls 11 and 12. The seal members 118 and 128 provided in the annular concave portions 117 and 127 of the above are in contact with the pressure elastic bodies 145 and 146, respectively. That is, as shown in FIG. 2, the main length in the width direction of the sheathing board 141 and 142 _{W N} is the length in the width direction of the casting rolls 11, 12 (the rotation axis direction of the length of the molding surface 116, 126) W _The pair of side weir plates 143 and 144 are formed substantially equal to _R, and the seal members 118 and 128 provided in the annular concave portions 117 and 127 of the pair of main weir plates 141 and 142 and the pair of casting rolls 11 and 12. And pressed. Thereby, the molten metal 5 is in a space surrounded by the pair of main weir plates 141 and 142, the pair of side weir plates 143 and 144, and the vicinity (contact surfaces 113 and 123) of the roll gap 13 of the casting rolls 11 and 12 Will be accepted.

本実施形態の側堰板１４３，１４４は、少なくとも主堰板１４１，１４２に密接する側の表層面が、アルミニウム系材料の融点又は液相温度に耐え得る耐熱性、並びに耐摩耗性及び／又は耐剥離性耐熱性を有する、たとえばセラミックス製の硬質材料から形成されている。また、図２及び図３Ｂに示すように、側堰板１４３，１４４は、押圧弾性体１４５，１４６により、一対の鋳造ロール１１，１２の環状凹部１１７，１２７に設けられたシール部材１１８，１２８に押圧されるが、その押圧力、シール部材１１８，１２８の突出高さ及びシール部材１１８，１２８の柔軟性等々の諸条件を含めて、鋳造ロール１１，１２の端面に対しては、僅かな隙間を空けて又はゼロ当たりといった無負荷の状態で設けられている。これにより、鋳造ロール１１，１２が回転しても鋳造ロール１１，１２の端面が側堰板１４３，１４４の内面を摩耗させたり表層面を剥離させたりすることを防止することができる。 The side plate 143, 144 of this embodiment has heat resistance, wear resistance and / or at least the surface layer of the side in close contact with the main plate 141, 142 can withstand the melting point or liquidus temperature of the aluminum-based material. It is formed of, for example, a ceramic hard material having peel resistance and heat resistance. Further, as shown in FIGS. 2 and 3B, the side weir plates 143 and 144 are seal members 118 and 128 provided in the annular concave portions 117 and 127 of the pair of casting rolls 11 and 12 by the pressing elastic members 145 and 146. It is pressed against the end face of the casting rolls 11, 12 including various conditions such as the pressing force, the protruding height of the sealing members 118, 128 and the flexibility of the sealing members 118, 128, etc. It is provided with no load such as opening a gap or hitting zero. Thus, it is possible to prevent the end faces of the casting rolls 11 and 12 from wearing the inner surfaces of the side weir plates 143 and 144 or peeling off the surface thereof even if the casting rolls 11 and 12 rotate.

図１及び図２に戻り、溶湯ノズル１４の上方には、レードル（取鍋）１５が設けられ、当該レードル１５に収容された溶湯５を溶湯ノズル１４に注入するための、ホイストクレーンなどのレードル移動機構（不図示）が設けられている。アルミニウム系材料の固形原材料は、レードル１５に投入された状態で別途の溶解炉にて溶解され、このレードル１５をレードル移動機構により溶湯ノズル１４の近傍に移動し、当該レードル１５を傾けることで溶湯５を溶湯ノズル１４に注入する。図１Ａ及び図２に示すレードル１５は、いわゆるバッチ方式による鋳造を行う場合のものを示すが、本発明に適用できるレードルは、溶解炉により溶解したアルミニウム材の溶湯５を連続してレードル１５に給湯し、当該レードル１５の注湯口から溶湯ノズル１４へ連続して溶湯５を注湯するタイプの連続方式のものも含まれる。 Referring back to FIGS. 1 and 2, a ladle (ladle) 15 is provided above the molten metal nozzle 14, and a ladle such as a hoist crane for injecting the molten metal 5 contained in the ladle 15 into the molten metal nozzle 14. A moving mechanism (not shown) is provided. The solid raw material of the aluminum-based material is melted in a separate melting furnace in a state of being charged into the ladle 15, and this ladle 15 is moved to the vicinity of the molten metal nozzle 14 by the ladle moving mechanism, and the molten metal is inclined by tilting the ladle 15. 5 is injected into the molten metal nozzle 14. The ladle 15 shown in FIG. 1A and FIG. 2 shows the case of performing casting by a so-called batch method, but the ladle applicable to the present invention continuously converts the molten metal 5 of the aluminum material melted by the melting furnace into the ladle 15 The continuous type of the type of the type in which the hot water is supplied and the molten metal 5 is continuously poured from the pouring port of the ladle 15 to the molten metal nozzle 14 is also included.

一対の鋳造ロール１１，１２の下方には、ロールギャップ１３を通過して固相状態となったアルミニウムシート２を略水平方向に案内するガイド板６が設けられ、その下流にガイドローラ７と巻取機３が設けられている。ロールギャップ１３を通過して固相状態となったアルミニウムシート２は、ガイド板６により水平方向に案内されたのちガイドローラ７の上面を滑りつつ巻取機３によってロール状に巻き取られる。 Below the pair of casting rolls 11 and 12, a guide plate 6 for guiding the aluminum sheet 2 in a solid state through the roll gap 13 in a substantially horizontal direction is provided, and a guide roller 7 and winding are provided downstream thereof. A picker 3 is provided. The aluminum sheet 2 which has passed through the roll gap 13 and is in a solid state is guided in the horizontal direction by the guide plate 6 and then is rolled up by the winder 3 while sliding on the upper surface of the guide roller 7.

図１Ｂは、本実施形態の双ロール式縦型鋳造装置１の溶湯ノズル１４及び一対の鋳造ロール１１，１２で囲まれた鋳造の主要部分を示す断面図である。本実施形態の双ロール式縦型鋳造装置１においては、一対の鋳造ロール１１，１２の回転を開始すると同時又は若干のタイムラグをもって、レードル１５から溶湯ノズル１４へ溶湯５を注入する。この溶湯注入初期段階において、溶湯ノズル１４への溶湯５の注入速度（単位時間当たりの注入容積）は、ロールギャップ１３を通過して固相状態となるアルミニウムシート２の鋳造速度（単位時間当たりの鋳造容積）よりも大きい速度に設定する。 FIG. 1B is a cross-sectional view showing the main part of the casting surrounded by the molten metal nozzle 14 and the pair of casting rolls 11 and 12 of the twin roll vertical casting apparatus 1 of the present embodiment. In the twin roll vertical casting apparatus 1 of the present embodiment, the molten metal 5 is injected from the ladle 15 to the molten metal nozzle 14 simultaneously with the start of the rotation of the pair of casting rolls 11 and 12 or with a slight time lag. In the initial stage of the molten metal injection, the injection speed (injected volume per unit time) of the molten metal 5 into the molten metal nozzle 14 is the casting speed (per unit time) of the aluminum sheet 2 which passes through the roll gap 13 and becomes solid state. Set the speed higher than the casting volume).

溶湯ノズル１４に注入された溶湯５は、ロールギャップ１３の中心水平線と交わる点Ｐ１から主堰板１４１，１４２に接触又は僅かな隙間をあけて設けられる点Ｐ２までの、一対の鋳造ロール１１，１２の接触面１１３，１２３と接触することで、溶湯５は冷却され、凝固し始める。図１Ｂにおいて溶湯５のうち液相状態の溶湯を符号５１、固液共存の溶湯を符号５２、固相の溶湯（すなわちアルミニウムシート２）を符号５３で示す。 The molten metal 5 injected into the molten metal nozzle 14 is a pair of casting rolls 11 from a point P1 intersecting the central horizontal line of the roll gap 13 to a point P2 provided in contact with the main plate 141, 142 or with a slight gap. The molten metal 5 is cooled and begins to solidify by coming into contact with the twelve contact surfaces 113 and 123. In FIG. 1B, among the molten metal 5, the molten metal in the liquid phase is denoted by reference numeral 51, the molten metal in the solid-liquid coexistence is denoted by reference numeral 52, and the molten metal in the solid phase (that is, the aluminum sheet 2) is indicated by reference numeral 53.

本実施形態の双ロール式縦型鋳造装置１は、溶湯５の冷却速度が例えば１０００℃／秒以上となる冷間圧延鋳造法であり、この溶湯５の冷却速度に応じて一対の鋳造ロール１１，１２の周速度が設定される。ここで、液相の溶湯５１が接触面１１３，１２３と接触する際の温度が高いと、凝固速度が遅くなり、図１Ｂに示す液相の溶湯５１及び固液共存の溶湯５２の存在領域が、同図において下方にずれることになる。このため、ロールギャップ１３を通過する溶湯のうち液相の溶湯５１が全体に占める割合が増加し、固相の溶湯５３が全体に占める割合が減少するので、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力が減少する。これにより、ロールギャップ１３は小さくなる。逆に、液相の溶湯５１が接触面１１３，１２３と接触する際の温度が低いと、凝固速度が早くなり、図１Ｂに示す液相の溶湯５１及び固液共存の溶湯５２の存在領域が、同図において上方にずれることになる。このため、ロールギャップ１３を通過する溶湯のうち固相の溶湯５３が全体に占める割合が増加し、液相の溶湯５１が全体に占める割合が減少するので、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力が増加する。これにより、ロールギャップ１３は大きくなる。このように、溶湯ノズル１４に注入された溶湯５の温度が変動すると、ロールギャップ１３の寸法が変動し、その結果、得られるアルミニウムシート２の板厚ｔが不均一となる。 The twin roll vertical casting apparatus 1 of the present embodiment is a cold rolling method in which the cooling rate of the molten metal 5 is, for example, 1000 ° C./sec or more, and the pair of casting rolls 11 according to the cooling rate of the molten metal 5. , 12 circumferential speeds are set. Here, if the temperature when the molten metal 51 in the liquid phase comes in contact with the contact surfaces 113 and 123 is high, the solidification speed becomes slow, and the existence region of the molten metal 51 in the liquid phase and the molten metal 52 in the solid-liquid coexistence shown in FIG. , In the same figure will be shifted downward. For this reason, the ratio of the molten metal 51 in the liquid phase to the whole among the molten metal passing through the roll gap 13 increases, and the ratio of the molten metal 53 in the solid phase decreases to the whole. As a result, the reaction force to spread the roll gap 13 is reduced. Thereby, the roll gap 13 becomes small. Conversely, if the temperature when the molten metal 51 in the liquid phase comes in contact with the contact surfaces 113 and 123 is low, the solidification speed is increased, and the existence region of the molten metal 51 in the liquid phase and the molten metal 52 in the solid / liquid coexistence shown in FIG. In the figure, it will be shifted upward. Therefore, the ratio of solid phase molten metal 53 to the whole of the molten metal passing through the roll gap 13 increases and the ratio of liquid phase 51 to the whole decreases, so that the elastic bias of the elastic body 122 is violated. As a result, the reaction force to expand the roll gap 13 is increased. Thereby, the roll gap 13 becomes large. Thus, when the temperature of the molten metal 5 injected into the molten metal nozzle 14 fluctuates, the dimensions of the roll gap 13 fluctuate, and as a result, the thickness t of the obtained aluminum sheet 2 becomes nonuniform.

また、本実施形態の双ロール式縦型鋳造装置１においては、いわゆるバッチ方式により所定量の溶湯５を溶湯ノズル１４に注入し、所定厚さｔ、所定幅Ｗ及び所定長さＬのアルミニウムシート２を得るが、溶湯ノズル１４に注入された溶湯５の重量が、鋳造中にロールギャップ１３に重力として作用する。すなわち、溶湯ノズル１４に注入された溶湯５の液面が高いと（溶湯重量が大きいと）、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力が増加する。これにより、ロールギャップ１３は大きくなる。また、溶湯ノズル１４に注入された溶湯５の液面が高いと（溶湯重量が大きいと）、溶湯５と接触面１１３，１２３との密着度が大きくなり、溶湯５の凝固効率が高くなる。このため、図１Ｂに示す液相の溶湯５１及び固液共存の溶湯５２の存在領域が、同図において上方にずれることになり、ロールギャップ１３を通過する溶湯のうち固相の溶湯５３が全体に占める割合が増加し、液相の溶湯５１が全体に示す割合が減少する。このため、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力が増加する。これによっても、ロールギャップ１３は大きくなるといえる。 Further, in the twin roll type vertical casting apparatus 1 of the present embodiment, the molten metal 5 of a predetermined amount is injected into the molten metal nozzle 14 by a so-called batch method, and an aluminum sheet of a predetermined thickness t, a predetermined width W and a predetermined length L 2 is obtained, but the weight of the molten metal 5 injected into the molten metal nozzle 14 acts as a gravity on the roll gap 13 during casting. That is, when the liquid level of the molten metal 5 injected into the molten metal nozzle 14 is high (when the molten metal weight is large), the reaction force for pushing the roll gap 13 against the elastic bias of the elastic body 122 increases. . Thereby, the roll gap 13 becomes large. When the liquid level of the molten metal 5 injected into the molten metal nozzle 14 is high (when the molten metal weight is large), the degree of adhesion between the molten metal 5 and the contact surfaces 113 and 123 is increased, and the solidification efficiency of the molten metal 5 is increased. For this reason, the region where the molten metal 51 in the liquid phase and the molten metal 52 in the solid-liquid coexistence shown in FIG. 1B are shifted upward in FIG. 1B, and the molten metal 53 in solid phase among the molten metal passing through the roll gap 13 is entirely. The ratio of the molten metal 51 in the liquid phase decreases as a whole. For this reason, the reaction force to spread the roll gap 13 against the elastic bias of the elastic body 122 is increased. Also by this, it can be said that the roll gap 13 becomes large.

逆に、溶湯ノズル１４に注入された溶湯５の液面が低いと（溶湯重量が小さいと）、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力が減少する。これにより、ロールギャップ１３は小さくなる。また、溶湯ノズル１４に注入された溶湯５の液面が低いと（溶湯重量が小さいと）、溶湯５と接触面１１３，１２３との密着度が小さくなり、溶湯５の凝固効率が低くなる。このため、図１Ｂに示す液相の溶湯５１及び固液共存の溶湯５２の存在領域が、同図において下方にずれることになり、ロールギャップ１３を通過する溶湯のうち液相の溶湯５１が全体に占める割合が増加し、固相の溶湯５３が全体に占める割合が減少する。このため、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力が減少する。これによっても、ロールギャップ１３は小さくなるといえる。このように、溶湯ノズル１４に注入された溶湯５の液面の位置が変動すると、ロールギャップ１３の寸法が変動し、その結果、得られるアルミニウムシート２の板厚ｔが不均一となる。 On the contrary, if the liquid level of the molten metal 5 injected into the molten metal nozzle 14 is low (if the molten metal weight is small), the reaction force for pushing the roll gap 13 against the elastic bias of the elastic body 122 decreases. Do. Thereby, the roll gap 13 becomes small. Further, if the liquid level of the molten metal 5 injected into the molten metal nozzle 14 is low (if the molten metal weight is small), the degree of adhesion between the molten metal 5 and the contact surfaces 113 and 123 becomes small, and the solidification efficiency of the molten metal 5 becomes low. For this reason, the existing regions of the molten metal 51 in the liquid phase and the molten metal 52 in the solid-liquid coexistence shown in FIG. 1B are shifted downward in FIG. 1B, and the molten metal 51 in the liquid phase is the whole of the molten metal passing through the roll gap 13. The ratio of the solid phase molten metal 53 to the whole decreases. For this reason, the reaction force which tries to spread the roll gap 13 against the elastic bias of the elastic body 122 is reduced. Also by this, it can be said that the roll gap 13 becomes small. As described above, when the position of the liquid surface of the molten metal 5 injected into the molten metal nozzle 14 changes, the dimension of the roll gap 13 changes, and as a result, the thickness t of the obtained aluminum sheet 2 becomes nonuniform.

このため、本実施形態の双ロール式縦型鋳造装置１では、ロールギャップ１３を通過する溶湯５が、弾性体１２２の弾性付勢に反して当該ロールギャップ１３を押し広げようとする反力を推定する反力推定器、たとえば溶湯ノズル１４の液面位置検出器や溶湯ノズル１４の溶湯温度検出器を設け、この反力推定器により推定された反力に応じて一対の鋳造ロール１１，１２がロールギャップ１３を通過する溶湯５から受ける単位時間当たりの受熱量を制御する制御ユニットを設け、推定された反力が大きいほど単位時間当たりの受熱量を小さく制御し、推定された反力が小さいほど単位時間当たりの受熱量を大きく制御してもよい。 For this reason, in the twin-roll type vertical casting apparatus 1 of the present embodiment, the molten metal 5 passing through the roll gap 13 has a reaction force to push the roll gap 13 against the elastic bias of the elastic body 122. A reaction force estimator to estimate, for example, a liquid level position detector of the melt nozzle 14 and a melt temperature detector of the melt nozzle 14 are provided, and the pair of casting rolls 11, 12 according to the reaction force estimated by this reaction force estimator. A control unit is provided to control the amount of heat received per unit time received from the molten metal 5 passing through the roll gap 13. The larger the estimated reaction force, the smaller the amount of heat received per unit time, and the estimated reaction force The smaller the value, the larger the amount of heat received per unit time may be controlled.

次に作用を説明する。
本実施形態の双ロール式縦型鋳造装置１を用いてアルミニウムシート２を鋳造する場合においては、まず一対の鋳造ロール１１，１２の回転を開始すると同時又は若干のタイムラグをもって、レードル１５から溶湯ノズル１４へ溶湯５を注入する。溶湯ノズル１４に注入された溶湯５は、図１Ｂに示すように、ロールギャップ１３の中心水平線と交わる点Ｐ１から主堰板１４１，１４２に接触又は僅かな隙間をあけて設けられる点Ｐ２までの、一対の鋳造ロール１１，１２の接触面１１３，１２３と接触することで、溶湯５は冷却され、凝固し始める。本実施形態の双ロール式縦型鋳造装置１は、溶湯５の冷却速度が例えば１０００℃／秒以上となる冷間圧延鋳造法であり、この溶湯５の冷却速度に応じて一対の鋳造ロール１１，１２の周速度が設定される。 Next, the operation will be described.
In the case of casting the aluminum sheet 2 using the twin-roll vertical casting apparatus 1 of the present embodiment, the molten metal nozzle from the ladle 15 is started at the same time or with a slight time lag when the pair of casting rolls 11, 12 starts rotating. The molten metal 5 is poured into 14. The molten metal 5 injected into the molten metal nozzle 14 is, as shown in FIG. 1B, from a point P1 intersecting the central horizontal line of the roll gap 13 to a point P2 provided in contact with the main plate 141, 142 or with a slight gap. The molten metal 5 is cooled and begins to solidify by coming into contact with the contact surfaces 113 and 123 of the pair of casting rolls 11 and 12. The twin roll vertical casting apparatus 1 of the present embodiment is a cold rolling method in which the cooling rate of the molten metal 5 is, for example, 1000 ° C./sec or more, and the pair of casting rolls 11 according to the cooling rate of the molten metal 5. , 12 circumferential speeds are set.

ロールギャップ１３を通過したアルミニウムシート２は、鋳造ロール１１，１２の回転によって順次押し出され、ガイド板６及びガイドローラ７に案内されて巻取機３に巻き取られる。こうした鋳造過程において、側堰板１４３，１４４は、鋳造ロール１１，１２の端面に対しては無負荷の状態であり、シール部材１１８，１２８との間で摺動する。 The aluminum sheet 2 having passed the roll gap 13 is sequentially extruded by the rotation of the casting rolls 11 and 12, guided by the guide plate 6 and the guide roller 7, and taken up by the winding machine 3. In such a casting process, the side weir plates 143 and 144 are unloaded from the end faces of the casting rolls 11 and 12 and slide between the sealing members 118 and 128.

ここで、側堰板１４３，１４４の少なくとも表層面は耐摩耗性及び／又は耐剥離性並びに耐熱性を有する硬質材料から形成されているので、側堰板１４３，１４４の表層面の摩耗が抑制され、及び／又は、表層面から剥離した部材が生産されたアルミニウムシート２に混入することが抑制される。また、側堰板１４３，１４４は、鋳造ロール１１，１２の両端面と無負荷の状態で摺動するため、両者ともに摩耗することがなく、隙間の変化もない。さらに、鋳造ロール１１，１２の両端面から突出させて設けた、耐熱性及び柔軟性を有するシール部材１１８，１２８により、鋳造ロール１１，１２と側堰板１４３，１４４との間がシールされるため、ここから溶湯５が漏れるのを抑制することができる。また、鋳造ロール１１，１２に設けたシール部材１１８，１２８を交換することで品質が安定するので、側堰板１４３，１４４を交換するのに比べて段取り時間が短くなり、生産性が大幅に向上する。これにより、耐熱性とシール性を維持しつつ側堰板１４３，１４４の交換頻度を少なくすることができる。 Here, since at least the surface surface of the side covering plates 143 and 144 is formed of a hard material having wear resistance and / or peeling resistance and heat resistance, wear of the surface side surfaces of the side covering plates 143 and 144 is suppressed. And / or mixing of a member peeled from the surface layer with the produced aluminum sheet 2 is suppressed. Further, since the side weir plates 143 and 144 slide in the unloaded state with both end faces of the casting rolls 11 and 12, neither of them wears and there is no change in the gap. Further, the heat-resistant and flexible seal members 118 and 128 provided so as to protrude from both end surfaces of the casting rolls 11 and 12 seal between the casting rolls 11 and 12 and the side weir plates 143 and 144. Therefore, it can suppress that the molten metal 5 leaks from here. In addition, since the quality is stabilized by replacing the seal members 118 and 128 provided on the casting rolls 11 and 12, the setup time is shortened compared with the replacement of the side weir plates 143 and 144, and the productivity is greatly improved. improves. Thereby, the frequency of replacement of the side weir plates 143 and 144 can be reduced while maintaining the heat resistance and the sealing performance.

また、本実施形態の双ロール式縦型鋳造装置１によれば、図４Ｂに示すように、シール部材１１８，１２８を、対向する端面ａ，ｂが、鋳造ロール１１，１２の両端面の半径方向に対して少なくとも部分的に重なり合うように、有端環状に形成すれば、これを交換する際に、鋳造ロール１１，１２自体を取り外すことなくシール部材１１８，１２８を着脱することができる。しかも、図４Ｂに示すαの範囲において、端面ａ，ｂが半径方向に重なり合っうことになり、側堰板１４３，１４４との押圧接触面のシール性、すなわち溶湯５の漏れを防止することができる。 Moreover, according to the twin roll type vertical casting apparatus 1 of the present embodiment, as shown in FIG. 4B, the end faces a and b of the seal members 118 and 128 facing each other are the radiuses of both end faces of the casting rolls 11 and 12 If it is formed in a closed loop so as to at least partially overlap in the direction, the seal members 118 and 128 can be attached and detached without removing the casting rolls 11 and 12 themselves when replacing them. Moreover, in the range of α shown in FIG. 4B, the end faces a and b overlap in the radial direction, and the sealing property of the pressure contact surface with the side weir plates 143 and 144, that is, the leakage of the molten metal 5 is prevented. it can.

また、本実施形態の双ロール式縦型鋳造装置１によれば、シール部材１１８，１２８の幅を環状凹部１１７，１２７の幅より小さくした場合に、シール部材１１８，１２８を環状凹部１１７，１２７の外側壁面に押圧された状態で設ければ、環状凹部１１７，１２７に溶湯５が浸入するのを防止することができる。 Further, according to the twin roll type vertical casting apparatus 1 of the present embodiment, when the width of the seal members 118, 128 is smaller than the width of the annular recesses 117, 127, the seal members 118, 128 are annular recesses 117, 127. If it is provided in a state where it is pressed against the outer wall surface of the above, it is possible to prevent the molten metal 5 from invading the annular concave portions 117 and 127.

次に、本発明に係る双ロール式縦型鋳造装置の第２実施形態を説明する。図７は、本発明に係る双ロール式縦型鋳造装置の第２実施形態を示す側面図、図８は、図７の平面図である。以下、上述した第１実施形態に係る双ロール式縦型鋳造装置１と共通する構成部材には明細書及び図面において同一の符号を付し、その説明の全部または一部を援用して省略する。図７及び図８に示す第２実施形態に係る双ロール式縦型鋳造装置１は、上記第１実施形態に係る双ロール式縦型鋳造装置１に対し、側堰板１４３，１４４の構造と、これにともなう一方の鋳造ロール１１の端面の構造が相違する。 Next, a second embodiment of the twin roll vertical casting apparatus according to the present invention will be described. FIG. 7 is a side view showing a second embodiment of the twin roll vertical casting apparatus according to the present invention, and FIG. 8 is a plan view of FIG. Hereinafter, the same reference numerals as in the specification and the drawings are attached to the same constituent members as those of the twin roll vertical casting apparatus 1 according to the above-described first embodiment, and the description thereof will be omitted . The double-roll type vertical casting apparatus 1 according to the second embodiment shown in FIGS. 7 and 8 has a side plate 143, 144 in comparison with the twin-roll type vertical casting apparatus 1 according to the first embodiment. The structure of the end face of one casting roll 11 accompanying this is different.

すなわち、本実施形態の側堰板１４３，１４４は、アルミニウム系材料の融点又は液相温度に耐え得る耐熱性を有するセラミックス製板材を基材とし、その表面（少なくとも主堰板と側堰板とで囲まれる内面）に、同等の耐熱性を有する断熱材層が形成されてなる。ただし、第１実施形態の側堰板１４３，１４４が図１Ａに示すように矩形状であるのに対し、本実施形態の側堰板１４３，１４４は、円盤形状とされ、さらに一方の鋳造ロール１１の両端面の回転軸１１１に締め付けられて固定されている。これにより、側堰板１４３，１４４は、一方の鋳造ロール１１の回転と共廻りする。なお、本実施形態の側堰板１４３，１４４は、溶湯ノズル１４に受容される溶湯５の最上液面を確保できるものであればよいので、円盤形状以外にも多角形状や楕円形状であってもよい。 That is, the side plate 143, 144 of the present embodiment uses a ceramic plate material having heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material as a base material, and its surface (at least the main plate and the side plate A heat insulating material layer having the same heat resistance is formed on the inner surface). However, while the side weir plates 143 and 144 of the first embodiment are rectangular as shown in FIG. 1A, the side weir plates 143 and 144 of this embodiment have a disk shape, and one of the casting rolls It is tightened and fixed to the rotating shaft 111 of the both end surfaces of 11. As a result, the side weir plates 143 and 144 share the rotation of one of the casting rolls 11. The side weir plates 143 and 144 in the present embodiment may be any shape other than the disk shape, as long as they can ensure the uppermost liquid surface of the molten metal 5 received by the molten metal nozzle 14. It is also good.

本実施形態の側堰板１４３，１４４は、一方の鋳造ロール１１の両端面に固定されて共廻りすることから、当該一方の鋳造ロール１１との摺動による摩耗や剥離は考慮しなくてよい。そのため、当該一方の鋳造ロール１１の両端面には、上述した第１実施形態の鋳造ロール１１のような環状凹部１１７及びシール部材１１８は設けられていない。これに対して、他方の鋳造ロール１２については、溶湯との接触面１２３の部分で側堰板１４３，１４４とシールする必要があるため、上述した第１実施形態の鋳造ロール１２と同様に、当該鋳造ロール１２の両端面に環状凹部１２７とシール部材１２８が設けられている。 The side weir plates 143 and 144 of this embodiment are fixed to both end faces of one casting roll 11 so that they do not need to be considered for wear and peeling due to sliding with the one casting roll 11. . Therefore, the annular recess 117 and the seal member 118 like the casting roll 11 of the first embodiment described above are not provided on both end faces of the one casting roll 11. On the other hand, since it is necessary to seal the side casting board 143,144 in the part of the contact surface 123 with a molten metal about the other casting roll 12, similarly to the casting roll 12 of 1st Embodiment mentioned above, An annular recess 127 and a seal member 128 are provided on both end surfaces of the casting roll 12.

また本実施形態では、側堰板１４３，１４４が一方の鋳造ロール１１の回転にともなって回転するため、側堰板１４３，１４４を主堰板１４１，１４２の端縁に押し付けるための押圧弾性体１４５，１４６は固定構造にはできない。このため、第１実施形態の押圧弾性体１４５，１４６に代えて、側堰板１４３，１４４の外側の面を摺動しながら押圧するバックアップパッド１４５Ｂ，１４６Ｂと、このバックアップパッド１４５Ｂ，１４６Ｂを中心方向に押し付ける流体シリンダなどからなるスライドユニット１４５Ａ，１４６Ａが設けられている。これらスライドユニット１４５Ａ，１４６Ａ及びバックアップパッド１４５Ｂ，１４６Ｂにより、側堰板１４３，１４４は、主堰板１４１，１４２の端縁と、他方の鋳造ロール１２の両端面に設けられたシール部材１２８，１２８に押し付けられながら回転する。なお、一方の鋳造ロール１１の両端面に側堰板１４３，１４４を固定することに代えて、他方の鋳造ロール１２の両端面に側堰板１４３，１４４を固定してもよい。 Further, in the present embodiment, since the side weir plates 143 and 144 rotate along with the rotation of one of the casting rolls 11, a pressing elastic body for pressing the side weir plates 143 and 144 against the edge of the main weir plates 141 and 142 145 and 146 can not be fixed structures. For this reason, in place of the pressing elastic bodies 145 and 146 of the first embodiment, backup pads 145B and 146B for pressing while sliding the outer surfaces of the side anchor plates 143 and 144, and the backup pads 145B and 146B Slide units 145A and 146A are provided, each of which comprises a fluid cylinder or the like that presses in a direction. By the slide units 145A and 146A and the backup pads 145B and 146B, the side weir plates 143 and 144 are seal members 128 and 128 provided on the end edges of the main weir plates 141 and 142 and on both end surfaces of the other casting roll 12 Rotate while being pressed against. Instead of fixing the side weir plates 143 and 144 to the both end faces of one casting roll 11, the side weir plates 143 and 144 may be fixed to the both end faces of the other casting roll 12.

以上のように構成した本実施形態の双ロール式縦型鋳造装置１によれば、側堰板１４３，１４４と一方の鋳造ロール１１の両端面とは固定されているのでシール性が確保されるとともに、鋳造ロール１１の両端面によって側堰板１４３，１４４が摩耗したり剥離したりすることが防止される。また、側堰板１４３，１４４は、一方の鋳造ロール１１と同じ周速度で回転することから、ロールギャップ１３に至る溶湯５の流速との相対速度がほぼゼロとなる。その結果、溶湯５の熱負荷によって側堰板１４３，１４４の表層面が摩耗したり剥離したりすることが防止される。なお、側堰板１４３，１４４と他方の鋳造ロール１２のシール部材１２８とは摺動するものの、第１実施形態の摺動面積に比べて大きい摺動面積で摺動するので、単位面積当たりの圧力が小さくなる。その結果、シール部材１２８の交換頻度が相対的に少なくなるという効果も奏する。 According to the twin roll type vertical casting apparatus 1 of the present embodiment configured as described above, the side dam plates 143 and 144 and the both end faces of one casting roll 11 are fixed, so the sealing performance is secured. At the same time, the side end plates 143 and 144 are prevented from being worn out or exfoliated by the both end surfaces of the casting roll 11. Further, since the side weir plates 143 and 144 rotate at the same peripheral speed as one of the casting rolls 11, the relative speed with the flow velocity of the molten metal 5 reaching the roll gap 13 becomes substantially zero. As a result, it is possible to prevent the surface layer surface of the side anchor plate 143, 144 from being worn out or exfoliated by the heat load of the molten metal 5. Although the side weir plates 143 and 144 and the seal member 128 of the other casting roll 12 slide, since they slide with a larger sliding area than the sliding area of the first embodiment, per unit area The pressure is reduced. As a result, there is also an effect that the replacement frequency of the seal member 128 is relatively reduced.

図９は、本発明に係る双ロール式縦型鋳造装置の第３実施形態を示す側面図、図１０は、図９の平面図である。以下、上述した第１及び第２実施形態に係る双ロール式縦型鋳造装置１と共通する構成部材には明細書及び図面において同一の符号を付し、その説明の全部または一部を援用して省略する。図７及び図８に示す第２実施形態に係る双ロール式縦型鋳造装置１においては、一対の鋳造ロール１１，１２の一方の両端面に側堰板１４３，１４４を固定したが、本実施形態では、一方の鋳造ロール１１の一方（図１０において下側）に側堰板１４４が固定され、他方の鋳造ロール１２の他方（図１０において上側）に側堰板１４３が固定されている。またこれにともない、一方の鋳造ロール１１の他方の端面（図１０の上側）には環状凹部１１７とシール部材１１８が設けられ、他方の鋳造ロール１２の一方の端面（図１０の下側）には環状凹部１２７とシール部材１２８が設けられている。 FIG. 9 is a side view showing a third embodiment of the twin roll vertical casting apparatus according to the present invention, and FIG. 10 is a plan view of FIG. Hereinafter, the same components as those of the double-roll type vertical casting apparatus 1 according to the first and second embodiments described above are denoted by the same reference numerals in the specification and the drawings, and all or part of the description thereof is incorporated. Omitted. In the twin roll type vertical casting apparatus 1 according to the second embodiment shown in FIGS. 7 and 8, the side weir plates 143 and 144 are fixed to one end face of one of the pair of casting rolls 11 and 12. In the embodiment, the side weir plate 144 is fixed to one (lower side in FIG. 10) of one casting roll 11 and the side weir plate 143 is fixed to the other (upper side in FIG. 10) of the other casting roll 12. Along with this, an annular recess 117 and a seal member 118 are provided on the other end face (upper side in FIG. 10) of one casting roll 11 and on one end face (lower side in FIG. 10) of the other casting roll 12 An annular recess 127 and a sealing member 128 are provided.

以上のように構成した本実施形態の双ロール式縦型鋳造装置１によれば、側堰板１４４と一方の鋳造ロール１１の端面、側堰板１４３を他方の鋳造ロール１２の端面とは固定されているのでシール性が確保されるとともに、鋳造ロール１１，１２の端面によって側堰板１４３，１４４が摩耗したり剥離したりすることが防止される。また、側堰板１４３，１４４は、一対の鋳造ロール１１と同じ周速度で回転することから、ロールギャップ１３に至る溶湯５の流速との相対速度がほぼゼロとなる。その結果、溶湯５の熱負荷によって側堰板１４３，１４４の表層面が摩耗したり剥離したりすることが防止される。なお、側堰板１４４と他方の鋳造ロール１２のシール部材１２８、及び側堰板１４３と一方の鋳造ロール１１のシール部材１１８とは摺動するものの、第１実施形態の摺動面積に比べて大きい摺動面積で摺動するので、単位面積当たりの圧力が小さくなる。その結果、シール部材１１８，１２８の交換頻度が相対的に少なくなるという効果も奏する。 According to the twin roll type vertical casting apparatus 1 of the present embodiment configured as described above, the side weir plate 144 and the end face of one casting roll 11 and the end face of the side weir plate 143 are fixed to the end face of the other casting roll 12 As a result, the sealability is secured, and the end faces of the casting rolls 11 and 12 prevent the side weir plates 143 and 144 from being worn or peeled off. Further, since the side weir plates 143 and 144 rotate at the same peripheral speed as the pair of casting rolls 11, the relative speed with the flow velocity of the molten metal 5 reaching the roll gap 13 becomes almost zero. As a result, it is possible to prevent the surface layer surface of the side anchor plate 143, 144 from being worn out or exfoliated by the heat load of the molten metal 5. Although the side weir plate 144 and the seal member 128 of the other casting roll 12 and the side weir plate 143 and the seal member 118 of the one casting roll 11 slide, compared with the sliding area of the first embodiment. Since the sliding is performed with a large sliding area, the pressure per unit area is reduced. As a result, the frequency of replacement of the seal members 118 and 128 can be relatively reduced.

１…双ロール式縦型鋳造装置
１１…鋳造ロール
１１１…回転軸
１１２…回転駆動モータ
１１３…溶湯との接触面
１１４…ハブ
１１５…金属板
１１６…成形面
１１７…環状凹部
１１８…シール部材
１１９…押圧部材
１２…鋳造ロール
１２１…回転軸
１２２…弾性体
１２３…溶湯との接触面
１２４…ハブ
１２５…金属板
１２６…成形面
１２７…環状凹部
１２８…シール部材
Ｗ_Ｒ…成形面の回転軸方向の長さ
１３…ロールギャップ
１４…溶湯ノズル
１４１，１４２…主堰板
１４３，１４４…側堰板
１４５，１４６…押圧弾性体
１４５Ａ，１４６Ａ…スライドユニット
１４５Ｂ，１４６Ｂ…バックアップパッド
１４７…引張り弾性体
１５…レードル（取鍋）
２…アルミニウムシート
ｔ…アルミニウムシートの厚さ
Ｗ…アルミニウムシートの幅
Ｌ…アルミニウムシートの長さ
３…巻取機
４…架台
４１…スライドレール
５…溶湯
５１…液相の溶湯
５２…固液共存の溶湯
５３…固相の溶湯（シート）
６…ガイド板
７…ガイドローラ
Ｂ…ボルト DESCRIPTION OF SYMBOLS 1 ... Double roll type vertical casting apparatus 11 ... Casting roll 111 ... Rotary shaft 112 ... Rotation drive motor 113 ... Contact surface with a molten metal 114 ... Hub 115 ... Metal plate 116 ... Molding surface 117 ... Annular recessed part 118 ... Seal member 119 ... Pressing member 12 Casting roll 121 Rotating shaft 122 Elastic body 123 Contact surface with molten metal 124 Hub 125 Metal plate 126 Forming surface 127 Annular recess 128 Sealing member W _R ... Direction of rotation axis of forming surface Length 13 ... Roll gap 14 ... Molten metal nozzle 141, 142 ... Main plate 143, 144 ... Side plate 145, 146 ... Pressing elastic body 145A, 146A ... Slide unit 145B, 146B ... Backup pad 147 ... Tensile elastic body 15 ... Ladle (ladle)
2. Aluminum sheet t Thickness of aluminum sheet W Width of aluminum sheet L Length of aluminum sheet 3 Winding machine 4 Mounting frame 41 Slide rail 5 Molten metal 51 Molten liquid phase 52 Solid-liquid coexistence Molten metal 53 ... Solid phase molten metal (sheet)
6 Guide plate 7 Guide roller B Bolt

Claims

A twin roll vertical casting apparatus for producing an aluminum-based material into a sheet, comprising:
A forming surface is disposed opposite to each other with a predetermined roll gap, rotates at an equal circumferential speed about a rotation axis parallel to each other, and is elastically biased in a relatively approaching direction, and a molding surface of a predetermined length in the direction of the rotation axis A pair of casting rolls having
It includes a pair of main weir plates disposed opposite to each other in parallel with the rotation axis, and a pair of side weir plates oppositely disposed orthogonal to the rotation axis and in close contact with both end faces of the pair of main weir plates. And a melt nozzle disposed above the roll gap of the pair of casting rolls and into which a melt of an aluminum-based material is poured;
At least one of the pair of casting rolls is
An annular recess formed along the circumferential direction on at least one of both end surfaces of the circumferential surface constituting the molding surface;
And an annular seal member provided in the annular recess so as to protrude from the both end faces, and having heat resistance equivalent to the side weir plate and flexibility as compared to the side weir plate ,
At least one of the pair of side boards is
At least the surface layer on the side in close contact with the main drawing plate is formed of a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material , and The twin-roll vertical casting apparatus is provided in an unloaded state with respect to one of the end faces and in a pressed state with respect to the seal member.

A twin roll vertical casting apparatus for producing an aluminum-based material into a sheet, comprising:
A forming surface is disposed opposite to each other with a predetermined roll gap, rotates at an equal circumferential speed about a rotation axis parallel to each other, and is elastically biased in a relatively approaching direction, and a molding surface of a predetermined length in the direction of the rotation axis A pair of casting rolls having
It includes a pair of main weir plates disposed opposite to each other in parallel with the rotation axis, and a pair of side weir plates oppositely disposed orthogonal to the rotation axis and in close contact with both end faces of the pair of main weir plates. And a melt nozzle disposed above the roll gap of the pair of casting rolls and into which a melt of an aluminum-based material is poured;
Each of the pair of casting rolls is
An annular recess formed along the circumferential direction on each of both end surfaces of the circumferential surface constituting the molding surface;
And an annular seal member provided in the annular recess so as to protrude from the both end faces, and having heat resistance equivalent to the side weir plate and flexibility as compared to the side weir plate ,
Each of the pair of side panels is
At least the surface layer on the side in close contact with the main drawing plate is formed of a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material , and A twin-roll vertical casting apparatus, which is provided in an unloaded state with respect to each of the end faces and in a pressed state with respect to the seal member.

A twin roll vertical casting apparatus for producing an aluminum-based material into a sheet, comprising:
A forming surface is disposed opposite to each other with a predetermined roll gap, rotates at an equal circumferential speed about a rotation axis parallel to each other, and is elastically biased in a relatively approaching direction, and a molding surface of a predetermined length in the direction of the rotation axis A pair of casting rolls having
It includes a pair of main weir plates disposed opposite to each other in parallel with the rotation axis, and a pair of side weir plates oppositely disposed orthogonal to the rotation axis and in close contact with both end faces of the pair of main weir plates. And a melt nozzle disposed above the roll gap of the pair of casting rolls and into which a melt of an aluminum-based material is poured;
One of the pair of casting rolls is
An annular recess formed along the circumferential direction on each of both end surfaces of the circumferential surface constituting the molding surface;
And an annular seal member provided in the annular recess so as to protrude from the both end faces, and having heat resistance equivalent to the side weir plate and flexibility as compared to the side weir plate ,
Each of the pair of side panels is
It is fixed to each of the other end faces of the pair of casting rolls,
At least the surface layer on the side in close contact with the main base plate is formed of a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material , and the one casting A twin-roll type vertical casting apparatus which is provided in an unloaded state with respect to each of the end faces of the roll and pressed against the seal member.

A twin roll vertical casting apparatus for producing an aluminum-based material into a sheet, comprising:
A forming surface is disposed opposite to each other with a predetermined roll gap, rotates at an equal circumferential speed about a rotation axis parallel to each other, and is elastically biased in a relatively approaching direction, and a molding surface of a predetermined length in the direction of the rotation axis A pair of casting rolls having
It includes a pair of main weir plates disposed opposite to each other in parallel with the rotation axis, and a pair of side weir plates oppositely disposed orthogonal to the rotation axis and in close contact with both end faces of the pair of main weir plates. And a melt nozzle disposed above the roll gap of the pair of casting rolls and into which a melt of an aluminum-based material is poured;
One of the pair of casting rolls is
An annular recess formed along the circumferential direction on one of both end surfaces of the circumferential surface constituting the molding surface;
And an annular seal member provided in the annular recess so as to protrude from the one of the both end faces, and having heat resistance equivalent to the side weir plate and flexibility as compared to the side weir plate ,
The other of the pair of casting rolls is
An annular recess formed along the circumferential direction on the other of both end surfaces of the circumferential surface constituting the molding surface;
And an annular seal member provided in the annular recess so as to protrude from the other end face, and having heat resistance equivalent to the side weir plate and flexibility as compared to the side weir plate ,
One of the pair of side boards is
It is fixed to the other of the end faces of the one casting roll,
At least the surface layer on the side in close contact with the main base plate is formed of a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material , and the other casting The other of the two end faces of the roll is in an unloaded state, and the sealing member is provided in a pressed state,
The other of the pair of side boards is
It is fixed to one of the end faces of the other casting roll,
At least the surface layer on the side in close contact with the main base plate is formed of a hard material having wear resistance and / or peeling resistance and heat resistance that can withstand the melting point or liquidus temperature of the aluminum-based material , and the one casting A twin-roll vertical casting apparatus which is provided in an unloaded state with respect to one of the end faces of the roll and pressed against the seal member.

The seal member according to any one of claims 1 to 4, wherein the sealing member is formed in an end-to-end annular shape so that opposing end surfaces at least partially overlap in a radial direction of both end surfaces of the casting roll. Twin roll vertical casting equipment.

The annular recess has a cross-sectional shape including an inner wall surface along the circumferential direction of the end surface of the casting roll, a bottom surface continuous with the inner wall surface, and an outer wall surface continuous with the bottom surface and disposed outside the inner wall surface Have
The sealing member may, prior to twin-roll vertical casting apparatus according to any one of claims 1-5, provided with a pressing state in Kigai sidewall surface.

The twin-roll vertical casting apparatus according to claim 6, wherein the seal member is provided in a state of being pressed against the bottom surface of the annular recess.