JP4720145B2 - Molten metal supply nozzle - Google Patents

Molten metal supply nozzle Download PDF

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Publication number
JP4720145B2
JP4720145B2 JP2004311962A JP2004311962A JP4720145B2 JP 4720145 B2 JP4720145 B2 JP 4720145B2 JP 2004311962 A JP2004311962 A JP 2004311962A JP 2004311962 A JP2004311962 A JP 2004311962A JP 4720145 B2 JP4720145 B2 JP 4720145B2
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Prior art keywords
molten metal
supply nozzle
side weir
metal supply
nozzle
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JP2004311962A
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JP2006122933A (en
Inventor
裕之 大塚
明彦 木間塚
史郎 長田
廣喜 吉澤
久彦 深瀬
マハパトラ ラマ
ウッドベリー ピーター
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IHI Corp
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IHI Corp
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Priority to JP2004311962A priority Critical patent/JP4720145B2/en
Application filed by IHI Corp filed Critical IHI Corp
Priority to PCT/JP2005/019282 priority patent/WO2006046459A1/en
Priority to US11/577,882 priority patent/US20090126895A1/en
Priority to DE602005027603T priority patent/DE602005027603D1/en
Priority to AU2005298039A priority patent/AU2005298039B2/en
Priority to EP05795467A priority patent/EP1818120B1/en
Priority to KR1020077009936A priority patent/KR100947756B1/en
Priority to CN2005800369250A priority patent/CN101048247B/en
Publication of JP2006122933A publication Critical patent/JP2006122933A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0642—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Description

本発明は双ロール鋳造機に組み込む溶湯供給ノズルに関するものである。   The present invention relates to a molten metal supply nozzle incorporated in a twin roll casting machine.

図９は双ロール鋳造機の一例を示すもので、水平に並べて配置した一対の冷却ロール１と、当該冷却ロール１に付帯する一対のサイド堰２とを備えている。   FIG. 9 shows an example of a twin roll casting machine, which includes a pair of cooling rolls 1 arranged horizontally and a pair of side weirs 2 attached to the cooling roll 1.

冷却ロール１は、その内部に冷却水が流通し、生産すべきストリップ３の板厚に応じてロール間隙Ｇを拡縮調整できるように構成されている。   The cooling roll 1 is configured such that cooling water flows through the roll 1 and the roll gap G can be adjusted in accordance with the thickness of the strip 3 to be produced.

また、冷却ロール１の回転方向及び速度は、それぞれの外周面が上側からロール間隙Ｇへ向かって等速で移動するように設定してある。   Further, the rotation direction and speed of the cooling roll 1 are set so that the respective outer peripheral surfaces move from the upper side toward the roll gap G at a constant speed.

一方のサイド堰２は、各冷却ロール１の一端に面接触するように押し付けられ、他方のサイド堰２は、各冷却ロール１の他端に面接触するように押し付けられており、サイド堰２と冷却ロール１によって四方を囲まれる空間には、耐火物を素材とした溶湯供給ノズルがロール間隙Ｇの真上に位置するように配置されている。   One side weir 2 is pressed so as to be in surface contact with one end of each cooling roll 1, and the other side weir 2 is pressed so as to be in surface contact with the other end of each cooling roll 1. In the space surrounded by the cooling roll 1, the molten metal supply nozzle made of a refractory material is arranged so as to be located immediately above the roll gap G.

溶湯供給ノズルは、溶湯４を受けるために頂部が開いた細長のノズルトラフ５を有し、長手方向側壁の下端寄り部分には、ノズルトラフ５から冷却ロール１外周面へ向けて貫通する開口６が冷却ロール１軸線に沿って並ぶように複数穿設してあり、ノズルトラフ５に溶湯４を流し込むと、ロール間隙Ｇの上方に冷却ロール１外周面に接する溶湯溜まり７が形成される。   The molten metal supply nozzle has an elongated nozzle trough 5 whose top is opened to receive the molten metal 4, and an opening 6 penetrating from the nozzle trough 5 toward the outer peripheral surface of the cooling roll 1 is cooled at a portion near the lower end of the longitudinal side wall. A plurality of holes are formed so as to be aligned along the axis of the roll 1, and when the molten metal 4 is poured into the nozzle trough 5, a molten metal pool 7 in contact with the outer peripheral surface of the cooling roll 1 is formed above the roll gap G.

つまり、冷却水の流通により冷却ロール１を抜熱しながら、上記の溶湯溜まり７を形成して冷却ロール１を回転させると、溶湯４が冷却ロール１外周面で凝固し、ロール間隙Ｇから下方へストリップ３が下方へ向かって送り出される。   That is, when the cooling roll 1 is rotated by removing the cooling roll 1 by circulating the cooling water and the cooling roll 1 is rotated, the molten metal 4 is solidified on the outer peripheral surface of the cooling roll 1 and downward from the roll gap G. The strip 3 is sent out downward.

また、稼働累計時間に比例してサイド堰２の冷却ロール１摺動部分の摩耗が進むので、冷却ロール１に対するサイド堰２の押圧力を次第に強め、これら部材間から溶湯４が漏洩しないようにしている。   Further, since the wear of the cooling roll 1 sliding portion of the side weir 2 progresses in proportion to the accumulated operation time, the pressing force of the side weir 2 against the cooling roll 1 is gradually increased so that the molten metal 4 does not leak between these members. ing.

双ロール鋳造機に組み込まれる溶湯供給ノズルには、ノズル端部がサイド堰２に面接触しているもの（例えば、特許文献１参照）と、ノズル端部がサイド堰２から離隔して平行に向き合っているもの（例えば、特許文献２参照）がある。
特開昭６２−４５４５６号公報 特開平６−１１４５０５号公報 In the molten metal supply nozzle incorporated in the twin roll casting machine, the nozzle end is in surface contact with the side weir 2 (see, for example, Patent Document 1), and the nozzle end is separated from the side weir 2 in parallel. Some are facing each other (for example, see Patent Document 2).
JP-A 62-45456 JP-A-6-114505

ところが特許文献１のような構造を採用した場合は、溶湯供給ノズルの長手方向の寸法が不変であるので、サイド堰２の冷却ロール１摺動部分の摩耗が進むと、冷却ロール１に対するサイド堰２の押圧力を強めるだけでは溶湯４の漏洩を抑えられなくなる。   However, when the structure as in Patent Document 1 is adopted, the dimension in the longitudinal direction of the molten metal supply nozzle is not changed, and therefore, when wear of the cooling roll 1 sliding portion of the side weir 2 proceeds, the side weir against the cooling roll 1 is increased. The leakage of the molten metal 4 cannot be suppressed only by increasing the pressing force of 2.

また、特許文献２のような構造を採用した場合は、図１０に示すように溶湯ノズル長手方向側壁面８と冷却ロール１の間に比べて、平行に向き合っているサイド堰溶湯溜まり面９と溶湯ノズル端部壁面１０の間のほうが、溶湯４自由液面での流速分布が低くなる傾向を呈し、特に、溶湯ノズル端部壁面１０からサイド堰溶湯溜まり面９に対してロール間隙中心線Ｌが交わる点Ｐ０に向けて溶湯４が澱みやすくなる範囲Ａができる。   Further, when the structure as in Patent Document 2 is adopted, as shown in FIG. 10, the side weir molten metal pool surface 9 facing in parallel as compared with the side wall surface 8 of the molten metal nozzle and the cooling roll 1, and There is a tendency that the flow velocity distribution on the free liquid surface of the melt 4 is lower between the melt nozzle end wall surfaces 10, and in particular, the roll gap center line L from the melt nozzle end wall surface 10 to the side dam melt pool surface 9. A range A is formed in which the molten metal 4 is likely to stagnate toward the point P0 where the two intersect.

この澱みの範囲Ａでは、溶湯４の温度が輻射伝熱により低下するという事象が発現し、溶湯４自由液面や溶湯ノズル端部壁面１０に不要な凝固殻が生成される。   In this stagnation range A, the phenomenon that the temperature of the molten metal 4 decreases due to radiant heat transfer occurs, and unnecessary solidified shells are generated on the free liquid surface of the molten metal 4 and the wall surface 10 at the end of the molten metal nozzle.

更に、各冷却ロール１の回転に伴ってその外周面で生成された凝固殻が前述した不要な凝固殻を異物として挟み込むと、ストリップ３が局所的に厚くなる形状不良が生じたり、ストリップ３の異物を挟み込んだ部位によってロール間隙Ｇが押し拡げられ、冷却効率の低減と溶湯４からの復熱のためにストリップ３が破断することがある。   Further, when the solidified shell generated on the outer peripheral surface of each cooling roll 1 sandwiches the above-described unnecessary solidified shell as a foreign matter, a shape defect that locally increases the thickness of the strip 3 occurs. The roll gap G is pushed and expanded by the portion where the foreign matter is sandwiched, and the strip 3 may break due to a reduction in cooling efficiency and recuperation from the molten metal 4.

本発明は上述した実情に鑑みてなしたもので、ストリップの破断を回避できる溶湯供給ノズルを提供することを目的としている。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a molten metal supply nozzle capable of avoiding breakage of a strip.

上記目的を達成するため、請求項１に記載の発明は、双ロール鋳造機のロール間隙の上方に位置し且つ端部がサイド堰から離隔した溶湯供給ノズルであって、ノズル端部に連なり且つサイド堰へ向けて溶湯自由液面の澱みの範囲が無くなるように突出し且つサイド堰に向けて集束する形状の延長体を設けている。
請求項２に記載の発明は、双ロール鋳造機のロール間隙の上方に位置し且つ端部がサイド堰から離隔した溶湯供給ノズルであって、ノズル端部に連なり且つサイド堰へ向けて溶湯自由液面の澱みの範囲が無くなるように突出し且つサイド堰至近の一点に向けて集束する形状の延長体を設けている。 In order to achieve the above object, the invention described in claim 1 is a molten metal supply nozzle located above the roll gap of the twin roll casting machine and having an end portion separated from the side dam, and is connected to the nozzle end portion. An extension body having a shape that protrudes toward the side dam and converges toward the side dam is provided so that the range of stagnation on the free surface of the molten metal disappears.
The invention according to claim 2 is a molten metal supply nozzle that is located above the roll gap of the twin roll casting machine and whose end is separated from the side weir, and is continuous with the nozzle end and free of molten metal toward the side weir. An extension body that protrudes so as to eliminate the range of stagnation on the liquid surface and converges toward one point close to the side weir is provided.

本発明においては、延長体によって溶湯自由液面の澱み範囲を無くして輻射伝熱による溶湯の温度低下を防ぎ、不要な凝固殻の生成を抑止する。   In the present invention, the extension body eliminates the stagnation range of the free surface of the molten metal, thereby preventing the temperature of the molten metal from lowering due to radiant heat transfer and inhibiting the formation of unnecessary solidified shells.

本発明の溶湯供給ノズルよれば、下記のように優れた効果を奏し得る。   According to the molten metal supply nozzle of the present invention, the following excellent effects can be obtained.

（１）延長体によりサイド堰付近の溶湯の温度低下を防ぎ、溶湯自由液面での凝固殻の生成を抑止するので、冷却ロールの外周面で生成され且つストリップを形成する凝固殻が不要な凝固殻を異物として挟み込まず、ロール間隙の拡大に起因したストリップの破断を回避できる。   (1) Since the extension prevents the temperature of the molten metal near the side weir and prevents the formation of a solidified shell on the free surface of the molten metal, the solidified shell formed on the outer peripheral surface of the cooling roll and forming a strip is unnecessary. The solidified shell is not sandwiched as a foreign substance, and the breakage of the strip due to the expansion of the roll gap can be avoided.

（２）延長体の形状をサイド堰に向けて集束するようにして、当該延長体の体積を漸減させると、溶湯から延長体への熱伝達が少なくなり、サイド堰付近ので溶湯の温度低下を効果的に防ぐことができる。   (2) If the extension body is converged toward the side weir and the volume of the extension body is gradually reduced, heat transfer from the molten metal to the extension body is reduced, and the temperature of the melt is reduced near the side weir. Can be effectively prevented.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１乃至図４は本発明の溶湯供給ノズルの実施の形態の第１の例を示すもので、図中、図９及び図１０と同一の符号を付した部分は同一物を表している。   1 to 4 show a first example of an embodiment of a molten metal supply nozzle according to the present invention. In the drawings, the same reference numerals as those in FIGS. 9 and 10 denote the same parts.

下側部分が溶湯溜まり７に浸り且つサイド堰２へ向けて溶湯４自由液面の澱みの範囲Ａ（図１０参照）が無くなるように突出する延長体１１をノズル端部に設けている。   An extension body 11 is provided at the end of the nozzle so that the lower portion is immersed in the molten metal reservoir 7 and protrudes toward the side weir 2 so that the range A (see FIG. 10) of the free surface of the molten metal 4 disappears.

延長体１１は、四角錐を横倒しにしたような形状で、サイド堰２至近の点Ｐ１へ向けて集束している。   The extension body 11 is shaped like a quadrangular pyramid lying sideways and converges toward the point P1 close to the side weir 2.

この溶湯供給ノズルを組み込んだ双ロール鋳造機では、溶湯４自由液面の澱みの範囲Ａをノズル端部に連なる延長体１１に置き換えて不要な凝固殻の生成を抑止するので、冷却ロール１の外周面で生成され且つストリップ３を形成する凝固殻が不要な凝固殻を異物として挟み込まず、ロール間隙Ｇの拡大に起因したストリップ３の破断を回避できる。   In the twin roll casting machine incorporating the molten metal supply nozzle, the range A of the stagnation of the free liquid surface of the molten metal 4 is replaced with the extension 11 connected to the end of the nozzle to suppress the formation of unnecessary solidified shells. The solidified shell that is generated on the outer peripheral surface and does not require the solidified shell forming the strip 3 is not sandwiched as a foreign matter, and the breakage of the strip 3 due to the expansion of the roll gap G can be avoided.

これに加えて、延長体１１の体積をサイド堰２側へ向けて漸減させてあるので、溶湯４から延長体１１への熱伝達が少なくなり、サイド堰２付近での溶湯４の温度低下を効果的に防ぐことができ、当該サイド堰２に不要な凝固殻が生成されない。   In addition, since the volume of the extension 11 is gradually reduced toward the side weir 2, heat transfer from the molten metal 4 to the extension 11 is reduced, and the temperature of the molten metal 4 near the side weir 2 is reduced. This can be effectively prevented, and unnecessary solidified shells are not generated on the side weir 2.

図５及び図６は本発明の溶湯供給ノズルの実施の形態の第２の例を示すもので、図中、図１乃至図４と同一の符号を付した部分は同一物を表している。   5 and 6 show a second example of the embodiment of the molten metal supply nozzle of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 4 denote the same parts.

下側部分が溶湯溜まり７に浸り且つサイド堰２へ向けて溶湯４自由液面の澱みの範囲Ａ（図１０参照）が無くなるように突出する延長体１２をノズル端部に設けている。   An extension body 12 is provided at the end of the nozzle so that the lower portion is immersed in the molten metal reservoir 7 and protrudes toward the side weir 2 so that the range A (see FIG. 10) of the free surface of the molten metal 4 is eliminated.

延長体１２は、楔のような形状で、サイド堰２至近の点Ｐ２−Ｐ３を結ぶ水平な線分に向けて集束している。   The extension body 12 has a wedge-like shape and converges toward a horizontal line segment connecting the points P2-P3 close to the side weir 2.

この溶湯供給ノズルを組み込んだ双ロール鋳造機では、溶湯４自由液面の澱みの範囲Ａをノズル端部に連なる延長体１２に置き換えて不要な凝固殻の生成を抑止するので、冷却ロール１の外周面で生成され且つストリップ３を形成する凝固殻が不要な凝固殻を異物として挟み込まず、ロール間隙Ｇの拡大に起因したストリップ３の破断を回避できる。   In the twin roll casting machine incorporating the molten metal supply nozzle, the range A of the stagnation of the molten metal 4 free liquid surface is replaced with the extension 12 connected to the end of the nozzle to suppress the formation of unnecessary solidified shells. The solidified shell that is generated on the outer peripheral surface and does not require the solidified shell forming the strip 3 is not sandwiched as a foreign matter, and the breakage of the strip 3 due to the expansion of the roll gap G can be avoided.

これに加えて、延長体１２の体積をサイド堰２側へ向けて漸減させてあるので、溶湯４（図４参照）から延長体１２への熱伝達が少なくなり、サイド堰２付近での溶湯４の温度低下を効果的に防ぐことができ、当該サイド堰２に不要な凝固殻が生成されない。   In addition, since the volume of the extension body 12 is gradually reduced toward the side weir 2, heat transfer from the molten metal 4 (see FIG. 4) to the extension body 12 is reduced, and the molten metal near the side weir 2. 4 can be effectively prevented, and unnecessary solidified shells are not generated on the side weir 2.

図７及び図８は本発明の溶湯供給ノズルの実施の形態の第３の例を示すもので、図中、図１乃至図５と同一の符号を付した部分は同一物を表している。   FIGS. 7 and 8 show a third example of the embodiment of the molten metal supply nozzle of the present invention. In the figure, the parts denoted by the same reference numerals as those in FIGS. 1 to 5 represent the same thing.

下側部分が溶湯溜まり７に浸り且つサイド堰２へ向けて溶湯４自由液面の澱みの範囲Ａ（図１０参照）が無くなるように突出する延長体１３をノズル端部に設けている。   An extension body 13 is provided at the end of the nozzle so that the lower portion is immersed in the molten metal reservoir 7 and protrudes toward the side weir 2 so that the range A (see FIG. 10) of the free surface of the molten metal 4 disappears.

延長体１３は、先細りの四角柱を横倒しにしたような形状で、サイド堰２至近の点Ｐ２−Ｐ３−Ｐ４−Ｐ５を結ぶ垂直な面に向けて集束している。   The extension 13 is shaped like a tapered quadrangular cylinder lying sideways, and converges toward a vertical plane connecting the points P2-P3-P4-P5 close to the side weir 2.

この溶湯供給ノズルを組み込んだ双ロール鋳造機では、溶湯４自由液面の澱みの範囲Ａをノズル端部に連なる延長体１３に置き換えて不要な凝固殻の生成を抑止するので、冷却ロール１の外周面で生成され且つストリップ３を形成する凝固殻が不要な凝固殻を異物として挟み込まず、ロール間隙Ｇの拡大に起因したストリップ３の破断を回避できる。   In the twin roll casting machine incorporating the molten metal supply nozzle, the range A of the stagnation of the free liquid surface of the molten metal 4 is replaced with the extension 13 connected to the end of the nozzle to suppress the formation of unnecessary solidified shells. The solidified shell that is generated on the outer peripheral surface and does not require the solidified shell forming the strip 3 is not sandwiched as a foreign matter, and the breakage of the strip 3 due to the expansion of the roll gap G can be avoided.

溶湯４（図４参照）から延長体１３への熱伝達は、先に述べた実施の形態の第１の例や第２の例に比べると多くなるが、溶湯供給ノズル製作時の加工は、実施の形態の第３の例のほうが容易である。   The heat transfer from the molten metal 4 (see FIG. 4) to the extension body 13 is greater than that in the first and second examples of the embodiment described above, The third example of the embodiment is easier.

なお、本発明の溶湯供給ノズルは、上述した実施の形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲において変更を加え得ることは勿論である。   In addition, the molten metal supply nozzle of this invention is not limited only to embodiment mentioned above, Of course, it can add in the range which does not deviate from the summary of this invention.

本発明の溶湯供給ノズルは、鋼をはじめとして種々の金属ストリップの製造に適用することができる。   The molten metal supply nozzle of the present invention can be applied to manufacture of various metal strips including steel.

本発明の溶湯供給ノズルの実施の形態の第１の例を下方から見上げた状態を示す部分斜視図である。It is a fragmentary perspective view which shows the state which looked up at the 1st example of embodiment of the molten metal supply nozzle of this invention from the downward direction. 図１の溶湯供給ノズルを冷却ロール軸線方向に見た状態を示す概念図である。It is a conceptual diagram which shows the state which looked at the molten metal supply nozzle of FIG. 1 in the cooling roll axial direction. 図１の溶湯供給ノズルを冷却ロール接線方向に見た状態を示す概念図である。It is a conceptual diagram which shows the state which looked at the molten metal supply nozzle of FIG. 1 in the cooling roll tangent direction. 図１の溶湯供給ノズル付近における溶湯自由表面の流速分布を示す概念図である。It is a conceptual diagram which shows the flow velocity distribution of the molten metal free surface in the vicinity of the molten metal supply nozzle of FIG. 本発明の溶湯供給ノズルの実施の形態の第２の例を下方から見上げた状態を示す部分斜視図である。It is a fragmentary perspective view which shows the state which looked up at the 2nd example of embodiment of the molten metal supply nozzle of this invention from the downward direction. 図５の溶湯供給ノズルを冷却ロール軸線方向に見た状態を示す概念図である。It is a conceptual diagram which shows the state which looked at the molten metal supply nozzle of FIG. 5 in the cooling roll axial direction. 本発明の溶湯供給ノズルの実施の形態の第３の例を下方から見上げた状態を示す部分斜視図である。It is a fragmentary perspective view which shows the state which looked up at the 3rd example of embodiment of the molten metal supply nozzle of this invention from the downward direction. 図７の溶湯供給ノズルを冷却ロール軸線方向に見た状態を示す概念図である。It is a conceptual diagram which shows the state which looked at the molten metal supply nozzle of FIG. 7 in the cooling roll axial direction. 双ロール鋳造機の一例を示す概念図である。It is a conceptual diagram which shows an example of a twin roll casting machine. 図９の溶湯供給ノズル付近における溶湯自由表面の流速分布を示す概念図である。FIG. 10 is a conceptual diagram showing a flow velocity distribution on the free surface of the molten metal in the vicinity of the molten metal supply nozzle of FIG. 9.

符号の説明Explanation of symbols

２ サイド堰
７ 溶湯溜まり
１１，１２，１３ 延長体
Ａ 範囲
Ｇ ロール間隙
Ｐ１ 点 2 Side weir 7 Molten pool 11, 12, 13 Extension A range G roll gap P1 point

Claims (2)

双ロール鋳造機のロール間隙の上方に位置し且つ端部がサイド堰から離隔した溶湯供給ノズルであって、ノズル端部に連なり且つサイド堰へ向けて溶湯自由液面の澱みの範囲が無くなるように突出し且つサイド堰に向けて集束する形状の延長体を設けたことを特徴とする溶湯供給ノズル。 It is a molten metal supply nozzle that is located above the roll gap of the twin roll casting machine and whose end is separated from the side weir, so that the range of stagnation of the molten liquid free surface toward the side weir is eliminated. The molten metal supply nozzle is provided with an extended body that protrudes toward the side and converges toward the side weir . 双ロール鋳造機のロール間隙の上方に位置し且つ端部がサイド堰から離隔した溶湯供給ノズルであって、ノズル端部に連なり且つサイド堰へ向けて溶湯自由液面の澱みの範囲が無くなるように突出し且つサイド堰至近の一点に向けて集束する形状の延長体を設けたことを特徴とする溶湯供給ノズル。A molten metal supply nozzle that is located above the roll gap of the twin roll casting machine and whose end is separated from the side weir, so that the range of stagnation of the free surface of the molten metal is continuous to the end of the nozzle and toward the side weir. The molten metal supply nozzle is provided with an extended body that is shaped to protrude toward the side and converge toward one point near the side weir.
JP2004311962A 2004-10-27 2004-10-27 Molten metal supply nozzle Expired - Fee Related JP4720145B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2004311962A JP4720145B2 (en) 2004-10-27 2004-10-27 Molten metal supply nozzle
US11/577,882 US20090126895A1 (en) 2004-10-27 2005-10-20 Molten metal feed nozzle
DE602005027603T DE602005027603D1 (en) 2004-10-27 2005-10-20 TWO-ROLLING MACHINE WITH CLOSED CASTING NOZZLE
AU2005298039A AU2005298039B2 (en) 2004-10-27 2005-10-20 Molten metal feed nozzle
PCT/JP2005/019282 WO2006046459A1 (en) 2004-10-27 2005-10-20 Molten metal feed nozzle
EP05795467A EP1818120B1 (en) 2004-10-27 2005-10-20 Twin roll caster with tapered nozzle
KR1020077009936A KR100947756B1 (en) 2004-10-27 2005-10-20 Molten metal feed nozzle
CN2005800369250A CN101048247B (en) 2004-10-27 2005-10-20 Molten metal feed nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004311962A JP4720145B2 (en) 2004-10-27 2004-10-27 Molten metal supply nozzle

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JP2006122933A JP2006122933A (en) 2006-05-18
JP4720145B2 true JP4720145B2 (en) 2011-07-13

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US (1) US20090126895A1 (en)
EP (1) EP1818120B1 (en)
JP (1) JP4720145B2 (en)
KR (1) KR100947756B1 (en)
CN (1) CN101048247B (en)
AU (1) AU2005298039B2 (en)
DE (1) DE602005027603D1 (en)
WO (1) WO2006046459A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08164450A (en) * 1994-12-14 1996-06-25 Nippon Steel Corp Nozzle for continuously casting wide and thin cast slab

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245456A (en) 1985-08-23 1987-02-27 Ishikawajima Harima Heavy Ind Co Ltd Twin roll type continuous casting machine
JPS63235046A (en) * 1987-03-24 1988-09-30 Ishikawajima Harima Heavy Ind Co Ltd Twin roll type continuous casting machine
US4883113A (en) * 1988-03-03 1989-11-28 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Pouring device for dual-roll type continuous casting machine
JPH07102426B2 (en) * 1988-06-20 1995-11-08 株式会社日立製作所 Twin roll type continuous casting machine
JP3063808B2 (en) 1992-10-06 2000-07-12 新日本製鐵株式会社 Twin roll continuous casting machine
JPH1058095A (en) * 1996-08-14 1998-03-03 Nippon Steel Corp Partition plate in thin cast slab continuous casting apparatus
AUPO926197A0 (en) * 1997-09-17 1997-10-09 Bhp Steel (Jla) Pty Limited Casting steel strip

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08164450A (en) * 1994-12-14 1996-06-25 Nippon Steel Corp Nozzle for continuously casting wide and thin cast slab

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Publication number Publication date
AU2005298039B2 (en) 2010-03-04
EP1818120B1 (en) 2011-04-20
WO2006046459A1 (en) 2006-05-04
US20090126895A1 (en) 2009-05-21
CN101048247B (en) 2011-02-09
CN101048247A (en) 2007-10-03
AU2005298039A1 (en) 2006-05-04
KR20070068440A (en) 2007-06-29
JP2006122933A (en) 2006-05-18
DE602005027603D1 (en) 2011-06-01
EP1818120A1 (en) 2007-08-15
KR100947756B1 (en) 2010-03-18
EP1818120A4 (en) 2008-05-07

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