JP3022277B2 - Pouring nozzle for belt wheel type continuous casting machine - Google Patents
Pouring nozzle for belt wheel type continuous casting machineInfo
- Publication number
- JP3022277B2 JP3022277B2 JP7247079A JP24707995A JP3022277B2 JP 3022277 B2 JP3022277 B2 JP 3022277B2 JP 7247079 A JP7247079 A JP 7247079A JP 24707995 A JP24707995 A JP 24707995A JP 3022277 B2 JP3022277 B2 JP 3022277B2
- Authority
- JP
- Japan
- Prior art keywords
- pouring nozzle
- molten metal
- continuous casting
- wheel type
- type continuous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Continuous Casting (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高品質の鋳塊が得
られる、ベルトホイール式連続鋳造機用注湯ノズルに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring nozzle for a belt wheel type continuous casting machine capable of obtaining a high quality ingot.
【０００２】[0002]
【従来の技術】ベルトホイール式連続鋳造法は、図５に
示すように、回転ホイール31の外周面に形成された溝32
の一部に金属製のエンドレスベルト33を接動させて移動
鋳型34を形成し、この移動鋳型34の一方の開口端35から
溶湯41を注入し、溶湯41を移動鋳型34内で凝固させて鋳
塊42とし、この鋳塊42を前記移動鋳型34の他方の開口端
36から連続的に引出す鋳造法である。2. Description of the Related Art As shown in FIG. 5, a belt wheel type continuous casting method employs a groove 32 formed on an outer peripheral surface of a rotating wheel 31.
A moving mold 34 is formed by moving a metal endless belt 33 to a part of the moving mold 34, a molten metal 41 is injected from one open end 35 of the moving mold 34, and the molten metal 41 is solidified in the moving mold 34. The ingot 42 is used as the ingot 42, and the
It is a casting method that is continuously drawn from 36.
【０００３】このベルトホイール式連続鋳造法では、通
常、移動鋳型34の一方の開口端35を回転ホイール31の頂
部に位置させ、この開口端35に注湯ノズル14を、その軸
を水平にして配する。注湯ノズル14は、図６に示すよう
に、鉄枠16の内外面に断熱材17を被覆したもので、注湯
ノズル14の溶湯通路19の内側断面積はできるだけ大きく
取り（鋳塊断面積の 0.7〜0.8 倍程度）、溶湯41が移動
鋳型34内に静的に注入されるようにしている。尚、注湯
ノズル14の溶湯と接する面には黒鉛20がコーティングさ
れる。図７に示す注湯ノズル15は、その先端部分の周囲
を断熱材17で囲ったものである。In this belt-wheel continuous casting method, usually, one open end 35 of the moving mold 34 is positioned at the top of the rotating wheel 31, and the pouring nozzle 14 is placed at the open end 35, and the axis thereof is set horizontally. Distribute. As shown in FIG. 6, the pouring nozzle 14 is formed by covering the inner and outer surfaces of an iron frame 16 with a heat insulating material 17. (About 0.7 to 0.8 times), the molten metal 41 is statically injected into the moving mold 34. The surface of the pouring nozzle 14 that contacts the molten metal is coated with graphite 20. A pouring nozzle 15 shown in FIG. 7 has a periphery of a tip portion surrounded by a heat insulating material 17.
【０００４】[0004]
【発明が解決しようとする課題】図５に示した注湯ノズ
ル14の先端部分は、その外周が、回転ホイール31の溝32
の内面に接している為、溶湯温度41が急激に低下して、
溶湯中に高融点化合物が晶出する。この高融点化合物は
注湯ノズル14,15 の内壁面に沈着し粗大化し、この粗大
な高融点化合物が溶湯41の流れにより剥離して鋳塊内に
混入し、鋳造割れ、圧延割れ、更には伸線加工における
断線の原因になっていた。この対策には、溶湯を高温に
加熱して高融点化合物の晶出を抑止する方法が取られて
きた。しかし、溶湯を高温に加熱する方法は、加熱コ
ストが掛かる、溶湯の酸化ロスが多くなる、溶湯の
酸素や水素のガス吸収量が増えて鋳塊内にブローホール
が生じる、等の諸問題があり実用的でなかった。本発明
者等は、このような事態を踏まえて鋭意研究を行い、注
湯ノズル内の溶湯の流れを速めることにより、沈着した
化合物の粗大化を防止できることを知見し、更に研究を
進めて、本発明を完成させるに至った。本発明は、高融
点化合物の粗大化が抑制され、高品質の鋳塊が得られ
る、ベルトホイール式連続鋳造機用注湯ノズルを提供す
ることにある。The tip of the pouring nozzle 14 shown in FIG.
Because it is in contact with the inner surface of the melt, the molten metal temperature 41 drops sharply,
High melting point compounds crystallize in the molten metal. The high melting point compound is deposited on the inner wall surfaces of the pouring nozzles 14 and 15 and becomes coarse, and the coarse high melting point compound is separated by the flow of the molten metal 41 and is mixed into the ingot, which causes casting cracks, rolling cracks, and This was the cause of disconnection in wire drawing. As a countermeasure, a method has been adopted in which the molten metal is heated to a high temperature to suppress crystallization of the high melting point compound. However, the method of heating the molten metal to a high temperature has various problems such as high heating cost, increased oxidation loss of the molten metal, increased gas absorption of oxygen and hydrogen in the molten metal, resulting in blowholes in the ingot, and the like. It was not practical. The present inventors have conducted intensive research based on such a situation, and found that by accelerating the flow of the molten metal in the pouring nozzle, it is possible to prevent the coarsening of the deposited compound, and further research has been carried out. The present invention has been completed. An object of the present invention is to provide a pouring nozzle for a belt-wheel type continuous casting machine, in which coarsening of a high melting point compound is suppressed and a high quality ingot is obtained.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明は、
ベルトホイール式連続鋳造機用注湯ノズルにおいて、前
記注湯ノズルの先端部分の溶湯通路の断面積が鋳塊断面
積の 0.6倍以下に狭められていることを特徴とするベル
トホイール式連続鋳造機用注湯ノズルである。According to the first aspect of the present invention,
In a pouring nozzle for a belt wheel type continuous casting machine, a cross-sectional area of a molten metal passage at a tip portion of the pouring nozzle is narrowed to 0.6 times or less of an ingot cross-sectional area. This is a pouring nozzle.
【０００６】この発明では、溶湯通路が先端部分で狭め
られているので、注湯ノズル先端部分での溶湯の流速が
速まり、前記注湯ノズル先端部分での高融点化合物の沈
着粗大化が抑制される。注湯ノズル先端部分の溶湯通路
の断面積を、鋳塊断面積の 0.6倍以下に限定した理由
は、 0.6倍を超えてはその効果が十分に得られない為
で、特には 0.4倍以下が好ましい。余り狭くすると溶湯
の供給が困難になり生産性が低下するので、0.2 倍以上
にするのが良い。In the present invention, since the molten metal passage is narrowed at the distal end, the flow velocity of the molten metal at the distal end of the pouring nozzle is increased, and the deposition and coarsening of the high melting point compound at the distal end of the pouring nozzle are suppressed. Is done. The reason for limiting the cross-sectional area of the molten metal passage at the tip of the pouring nozzle to 0.6 times or less of the ingot cross-section is that if it exceeds 0.6 times, the effect cannot be obtained sufficiently, and especially 0.4 times or less. preferable. If it is too narrow, it becomes difficult to supply the molten metal and the productivity decreases, so it is better to make it 0.2 times or more.
【０００７】この発明において、注湯ノズルの少なくと
も先端部分の周囲を断熱材により囲むと、溶湯温度の低
下が抑制され、高融点化合物が析出し難い。又狭められ
た溶湯通路部分で、溶湯が乱流状態になっても、注湯ノ
ズルの先端部分の周囲が断熱材で囲われていて外気と遮
断されるので、ガスの巻き込みが防止される。In the present invention, if at least the periphery of the tip of the pouring nozzle is surrounded by a heat insulating material, a decrease in the temperature of the molten metal is suppressed, and a high melting point compound is not easily deposited. Further, even if the molten metal becomes turbulent in the narrowed molten metal passage, the periphery of the tip of the pouring nozzle is surrounded by a heat insulating material and is shut off from the outside air, so that the gas is prevented from being trapped.
【０００８】この発明において、溶湯通路を狭めるに
は、注湯ノズルの先端部分の壁厚を厚くする方法の他、
注湯ノズルの先端部分にブロックを配する方法等任意の
方法が適用される。ブロックを配すると、その部分の溶
湯通路が狭まり流速が速まる。[0008] In the present invention, in order to narrow the molten metal passage, in addition to the method of increasing the wall thickness of the tip portion of the pouring nozzle,
Arbitrary methods, such as a method of arranging a block at the tip of a pouring nozzle, are applied. When the block is arranged, the molten metal passage in that portion is narrowed, and the flow velocity is increased.
【０００９】請求項３記載の発明は、請求項１または請
求項２記載の注湯ノズルの先端部分にブロックが配され
ていることを特徴とするベルトホイール式連続鋳造機用
注湯ノズルである。[0009] The invention described in claim 3 is claim 1 or claim 3.
A pouring nozzle for a belt wheel type continuous casting machine, characterized in that a block is arranged at a tip portion of the pouring nozzle according to claim 2 .
【００１０】このように注湯ノズル先端部分にブロック
を配すると、その部分の溶湯通路が狭まって溶湯の流速
が速まり、高融点化合物の沈着粗大化が抑制される。こ
の場合も、注湯ノズルの少なくとも先端部分の周囲を断
熱材により囲うことによりガスの巻き込みが防止され、
又ブロックが配された部分の溶湯通路の断面積を鋳塊断
面積の0.6 倍以下に狭めることにより高融点化合物の沈
着粗大化がより確実に抑制される。By disposing the block at the tip of the pouring nozzle as described above, the flow path of the molten metal is narrowed at that part, the flow velocity of the molten metal is increased, and the deposition and coarsening of the high melting point compound are suppressed. In this case as well, gas entrapment is prevented by surrounding at least the periphery of the tip of the pouring nozzle with a heat insulating material,
By narrowing the cross-sectional area of the molten metal passage in the portion where the block is disposed to 0.6 times or less the cross-sectional area of the ingot, the deposition and coarsening of the high melting point compound can be more reliably suppressed.
【００１１】本発明において、注湯ノズルの断熱性、特
に鋳型と接する先端部分の断熱性を高めておくと、注湯
ノズル内での溶湯温度の低下が防止されて高融点化合物
の析出が抑えられ、本発明の高融点化合物の粗大化防止
効果が助長され好ましい。本発明において、断面積を狭
める箇所は、溶湯温度が低下する注湯ノズルの先端部分
でのみ行うのが好ましい。In the present invention, if the heat insulating property of the pouring nozzle, particularly the heat insulating property at the tip portion in contact with the mold, is enhanced, the temperature of the molten metal in the pouring nozzle is prevented from lowering, and the precipitation of the high melting point compound is suppressed. Therefore, the effect of preventing the high melting point compound of the present invention from being coarsened is promoted, which is preferable. In the present invention, it is preferable to reduce the cross-sectional area only at the tip of the pouring nozzle where the temperature of the molten metal decreases.
【００１２】[0012]
【実施例】以下に本発明を実施例により詳細に説明す
る。 （実施例１）図１イ、ロは、本発明の注湯ノズルの第１
の実施例を示す縦断面図及び正面図である。注湯ノズル
10の先端部分内面の上側壁の全体が先端部分18で急傾斜
で突出している。この為、溶湯の流速は、注湯ノズル10
の先端部分18で急激に速まる。The present invention will be described below in detail with reference to examples. (Embodiment 1) FIGS. 1A and 1B show a first embodiment of a pouring nozzle of the present invention.
It is the longitudinal section and the front view which show the Example of. Pouring nozzle
The entire upper wall of the inner surface of the tip portion 10 projects at the tip portion 18 with a steep slope. Therefore, the flow rate of the molten metal is
Speeds sharply at the tip 18 of the.
【００１３】（実施例２）図２イ、ロは、本発明の注湯
ノズルの第２の実施例を示す縦断面図及び正面図であ
る。注湯ノズル11の先端部分内面の上側壁の中央部分が
先端部分18で長手方向と幅方向から急傾斜で突出してい
る。この為、溶湯の流速は、注湯ノズル11の先端部分18
で急激に速まる。図１に示した注湯ノズルに較べて、溶
湯が乱れ易く、高融点化合物の沈着防止と沈着化合物の
剥離が促進する。(Embodiment 2) FIGS. 2A and 2B are a longitudinal sectional view and a front view showing a second embodiment of the pouring nozzle of the present invention. The central portion of the upper side wall of the inner surface of the tip end portion of the pouring nozzle 11 projects at the tip portion 18 at a steep inclination from the longitudinal direction and the width direction. For this reason, the flow rate of the molten metal depends on the tip 18 of the pouring nozzle 11.
Speeds up sharply. Compared with the pouring nozzle shown in FIG. 1, the molten metal is more likely to be disturbed, and the deposition of the high-melting compound is prevented and the separation of the deposited compound is promoted.
【００１４】（実施例３）図３イ、ロは、本発明の注湯
ノズルの第３の実施例を示す縦断面図及び正面図であ
る。注湯ノズル12の先端部分の内側上面に、四角錐形状
のブロック21が、支持棒24により、その底部（平面部）
を注湯ノズル12の先端に向けて取付けられている。この
ブロック21により、注湯ノズル12の溶湯通路19が先端に
向けて次第に狭まり、溶湯の流速は注湯ノズル12の先端
部分18で増加する。(Embodiment 3) FIGS. 3A and 3B are a longitudinal sectional view and a front view showing a third embodiment of the pouring nozzle of the present invention. On the inner upper surface of the tip of the pouring nozzle 12, a square pyramid-shaped block 21 is supported by a support rod 24 at its bottom (plane).
Is attached to the tip of the pouring nozzle 12. Due to this block 21, the molten metal passage 19 of the pouring nozzle 12 gradually narrows toward the distal end, and the flow velocity of the molten metal increases at the distal end portion 18 of the pouring nozzle 12.
【００１５】（実施例４）図４イ、ロは、本発明の注湯
ノズルの第４の実施例を示す縦断面図及び正面図であ
る。この注湯ノズル13は、図３に示した四角錐形状のブ
ロックの各側面を凹状に湾曲させて形成したものであ
る。このブロック22は、その各側面を凹状に湾曲させて
いる為、実施例３に示した注湯ノズルに較べて溶湯が乱
れ易く、高融点化合物の沈着防止と沈着化合物の剥離が
促進する。(Embodiment 4) FIGS. 4A and 4B are a longitudinal sectional view and a front view showing a fourth embodiment of the pouring nozzle of the present invention. The pouring nozzle 13 is formed by curving each side surface of the square pyramid-shaped block shown in FIG. 3 into a concave shape. Since each side surface of the block 22 is curved in a concave shape, the molten metal is more likely to be disturbed than the pouring nozzle shown in the third embodiment, thereby preventing deposition of the high melting point compound and promoting separation of the deposited compound.
【００１６】図５に示したベルトホイール式連続鋳造法
により、Ａｌ−0.8 wt％Ｚｒ合金溶湯を鋳造し、製出鋳
塊（断面積1800mm2)を連続的に熱間圧延して 9.5mmφの
荒引線とし、次いでこの荒引線を 3.6mmφの素線に伸線
加工した。溶湯温度はタンディッシュ内で 800℃、ノズ
ル先端部分で 760℃であった。注湯ノズルには、図１〜
４に示した各々の注湯ノズルを用いた。注湯ノズルには
鉄枠の内外面をケイ酸カルシウム系断熱材（熱伝導率：
0.15Kcal／mh℃) で被覆したものを用いた。実施例３と
４のブロック21,22 には黒鉛製のものを用い、このブロ
ックは注湯ノズルの鉄枠内面に黒鉛棒24で支持した。製
出する鋳塊と荒引線の欠陥をオンラインで検出した。又
伸線工程での断線回数を調べた。比較の為、溶湯通路を
先端部分で狭めない従来の注湯ノズル（図６、７）につ
いても同様の調査を行った。結果を表１に示す。尚、溶
湯通路の先端部分の最小断面積の鋳塊断面積に対する比
率は種々に変化させた。A molten Al-0.8 wt% Zr alloy is cast by the belt-wheel continuous casting method shown in FIG. 5, and the produced ingot (cross-sectional area 1800 mm 2 ) is continuously hot-rolled to 9.5 mmφ. The wire was roughened, and then the wire was drawn into a 3.6 mmφ wire. The melt temperature was 800 ° C in the tundish and 760 ° C at the nozzle tip. Fig. 1
Each of the pouring nozzles shown in FIG. 4 was used. The inner and outer surfaces of the iron frame are made of calcium silicate-based heat insulating material (thermal conductivity:
(0.15 Kcal / mh ° C). The blocks 21 and 22 of Examples 3 and 4 were made of graphite, and this block was supported by a graphite rod 24 on the inner surface of the iron frame of the pouring nozzle. The defects of the ingot to be produced and the rough drawn lines were detected online. Also, the number of disconnections in the wire drawing process was examined. For comparison, a similar investigation was conducted for a conventional pouring nozzle (FIGS. 6 and 7) in which the molten metal passage was not narrowed at the tip. Table 1 shows the results. In addition, the ratio of the minimum sectional area of the tip portion of the molten metal passage to the sectional area of the ingot was variously changed.
【００１７】[0017]
【表１】 注湯ノズル先端部分の最小断面積の鋳塊断面積に対する比率。 〜サンプル 200トン当たりの欠陥個数又は断線回数。[Table 1] Ratio of the minimum cross-sectional area at the tip of the pouring nozzle to the cross-sectional area of the ingot. ~ The number of defects or the number of disconnections per 200 tons of sample.
【００１８】表１より明らかなように、本発明例 (No.1
〜8)は、鋳塊、荒引線とも欠陥の発生回数は少なく、又
伸線工程での断線回数も１〜４回程度で極めて少なかっ
た。これは、ノズル先端部での溶湯の流速が速い為、高
融点化合物が沈着せず、或いは沈着しても粗大化する前
に流出した為である。他方、従来例のNo.9,10 は、鋳塊
及び荒引線に欠陥が発生し、伸線工程では断線が多発し
た。これは、ノズル先端部分での溶湯の流れが遅い為、
高融点化合物が沈着し粗大化して、この粗大化した高融
点化合物が鋳型内に流入し、そのまま鋳塊に混入した為
である。素線の断線部分を調査したところ、粗大な高融
点化合物が検出された。As is clear from Table 1, the present invention example (No. 1)
In Nos. To 8), the number of occurrences of defects was small in both the ingot and the rough wire, and the number of disconnections in the wire drawing process was extremely small, about 1 to 4 times. This is because the high flow rate of the molten metal at the nozzle tip portion was high, so that the high melting point compound did not deposit, or even if deposited, it flowed out before it became coarse. On the other hand, in Nos. 9 and 10 of the conventional example, defects occurred in the ingot and the rough wire, and the wire was frequently broken in the wire drawing process. This is because the flow of molten metal at the tip of the nozzle is slow,
This is because the high melting point compound is deposited and coarsened, and the coarsened high melting point compound flows into the mold and is directly mixed into the ingot. When the broken portion of the wire was examined, a coarse high melting point compound was detected.
【００１９】（実施例５）実施例３において、断熱材に
シリカ・アルミナ系断熱材（熱伝導率：0.12Kcal／mh
℃) を用いるか、ノズルの外側又は／及び内側にシリカ
・アルミナ系断熱材をコーティングしてノズルの保温性
を高めた他は、実施例３と同じ方法により、Ａｌ−0.8
wt％Ｚｒ合金素線を製造した。素線の断線回数を表２に
示す。Example 5 In Example 3, a silica-alumina-based heat insulating material (thermal conductivity: 0.12 Kcal / mh) was used as the heat insulating material.
° C), or the same method as in Example 3 except that the outer and / or inner side of the nozzle is coated with a silica-alumina heat insulating material to increase the heat retention of the nozzle.
A wt% Zr alloy strand was manufactured. Table 2 shows the number of wire breaks.
【００２０】[0020]
【表２】 No.12 〜14: ケイ酸カルシウム 系断熱材の上にシリカ-アルミナ系をコーティンク゛したもの、 数値(mm)はシリカ-アルミナ系の断熱材の厚さ。[Table 2] No.12 to 14: Calcium silicate-based heat insulating material coated with silica-alumina. The numerical value (mm) is the thickness of the silica-alumina heat insulating material.
【００２１】表２より明らかなように、断熱材に断熱性
に優れた（熱伝導率の悪い）シリカ-アルミナ系断熱材を用いた
もの(No.11) 、又はシリカ-アルミナ系断熱材をコーティングし
たもの(No.12〜14) は、注湯ノズル先端部分での溶湯温
度の低下が少なくなり、素線の断線回数が減少した。こ
れはノズル先端部での高融点化合物の析出量が減少した
為である。As is clear from Table 2, a heat-insulating material made of a silica-alumina heat-insulating material having excellent heat-insulating properties (poor thermal conductivity) (No. 11) or a silica-alumina-based heat insulating material was used. In the case of the coating (Nos. 12 to 14), the decrease in the melt temperature at the tip of the pouring nozzle was reduced, and the number of wire breaks was reduced. This is because the amount of the high melting point compound deposited at the tip of the nozzle was reduced.
【００２２】[0022]
【発明の効果】以上に述べたように、本発明によれば、
高融点化合物が注湯ノズル内壁に沈着し、粗大化して鋳
塊内に混入するようなことがなく、従って、圧延割れや
断線を生じない高品質の鋳塊が得られる。更にノズルの
断熱性を高めることにより、高融点化合物の析出を低減
でき、鋳塊品質を一層向上できる。依って、工業上顕著
な効果を奏する。As described above, according to the present invention,
The high melting point compound does not deposit on the inner wall of the pouring nozzle and is not coarsened and mixed into the ingot, so that a high quality ingot without rolling cracks and disconnection can be obtained. Further, by increasing the heat insulating property of the nozzle, the precipitation of the high melting point compound can be reduced, and the quality of the ingot can be further improved. Therefore, an industrially remarkable effect is achieved.
【図１】本発明の注湯ノズルの第１の実施例を示す縦断
面図及び正面図である。FIG. 1 is a longitudinal sectional view and a front view showing a first embodiment of a pouring nozzle of the present invention.
【図２】本発明の注湯ノズルの第２の実施例を示す縦断
面図及び正面図である。FIG. 2 is a vertical sectional view and a front view showing a second embodiment of the pouring nozzle of the present invention.
【図３】本発明の注湯ノズルの第３の実施例を示す縦断
面図及び正面図である。FIG. 3 is a longitudinal sectional view and a front view showing a third embodiment of the pouring nozzle of the present invention.
【図４】本発明の注湯ノズルの第４の実施例を示す縦断
面図及び正面図である。FIG. 4 is a longitudinal sectional view and a front view showing a fourth embodiment of the pouring nozzle of the present invention.
【図５】ベルトホイール式連続鋳造方法の説明図であ
る。FIG. 5 is an explanatory view of a belt wheel type continuous casting method.
【図６】従来の注湯ノズルの正面図である。FIG. 6 is a front view of a conventional pouring nozzle.
【図７】従来の注湯ノズルの正面図である。FIG. 7 is a front view of a conventional pouring nozzle.
10〜15…注湯ノズル 16………鉄枠 17………断熱材 18………注湯ノズルの先端 19………溶湯通路 20………黒鉛 21,22 …四角錐のブロック 23………四角錐のブロックの底部 24………ブロック支持棒 31………回転ホイール 32………回転ホイール外周面の溝 33………金属ベルト 34………移動鋳型 35………一方の開口端 36………他方の開口端 41………溶湯 42………鋳塊 10-15: Pouring nozzle 16: Iron frame 17: Insulating material 18: Tip of pouring nozzle 19: Melt passage 20: Graphite 21,22: Square pyramid block 23 ... … Bottom part of square pyramid block 24 …… Block support rod 31 …… Rotating wheel 32 …… Groove of the rotating wheel outer peripheral surface 33 ……… Metal belt 34 …… Movable mold 35 ……… One open end 36 ...... The other open end 41 ...... Melt 42 ...... Ingot
フロントページの続き (56)参考文献 特開 昭62−282753（ＪＰ，Ａ) 特開 平６−106308（ＪＰ，Ａ) 特開 平４−17954（ＪＰ，Ａ) 実開 昭60−99045（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/06 320 B22D 11/10 320 B22D 41/50 520 Continuation of the front page (56) References JP-A-62-282753 (JP, A) JP-A-6-106308 (JP, A) JP-A-4-17954 (JP, A) Jpn. , U) (58) Field surveyed (Int. Cl. 7 , DB name) B22D 11/06 320 B22D 11/10 320 B22D 41/50 520
Claims (4)
ルにおいて、前記注湯ノズルの先端部分の溶湯通路の断
面積が鋳塊断面積の 0.6倍以下に狭められていることを
特徴とするベルトホイール式連続鋳造機用注湯ノズル。1. A belt pouring nozzle for a belt wheel type continuous casting machine, wherein a cross-sectional area of a molten metal passage at a tip portion of the pouring nozzle is reduced to 0.6 times or less of a cross-sectional area of the ingot. Pouring nozzle for wheel type continuous casting machine.
ルにおいて、前記注湯ノズルの少なくとも先端部分の周
囲が断熱材により囲われており、且つ前記注湯ノズル先
端部分の溶湯通路の断面積が鋳塊断面積の 0.6倍以下に
狭められていることを特徴とするベルトホイール式連続
鋳造機用注湯ノズル。2. A pouring nozzle for a belt wheel type continuous casting machine, wherein at least a periphery of a tip portion of the pouring nozzle is surrounded by a heat insulating material, and a cross-sectional area of a molten metal passage at the tip portion of the pouring nozzle is reduced. A pouring nozzle for a belt-wheel type continuous casting machine, characterized in that the cross-sectional area of the ingot is reduced to 0.6 times or less.
ルの先端部分にブロックが配されていることを特徴とす
るベルトホイール式連続鋳造機用注湯ノズル。3. A pouring nozzle for a belt wheel type continuous casting machine, wherein a block is arranged at a tip portion of the pouring nozzle according to claim 1 .
ルにおいて、前記注湯ノズルの少なくとも先端部分の周
囲が断熱材により囲われており、且つ前記注湯ノズル先
端部分にブロックが配されて、前記ブロックが配された
部分の溶湯通路の断面積が鋳塊断面積の0.6 倍以下に狭
められていることを特徴とするベルトホイール式連続鋳
造機用注湯ノズル。4. A pouring nozzle for a belt wheel type continuous casting machine, wherein at least a periphery of a tip portion of the pouring nozzle is surrounded by a heat insulating material, and a block is arranged at the tip portion of the pouring nozzle. A pouring nozzle for a belt wheel type continuous casting machine, wherein a cross-sectional area of a molten metal passage in a portion where the block is disposed is reduced to 0.6 times or less of a cross-sectional area of the ingot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7247079A JP3022277B2 (en) | 1995-09-26 | 1995-09-26 | Pouring nozzle for belt wheel type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7247079A JP3022277B2 (en) | 1995-09-26 | 1995-09-26 | Pouring nozzle for belt wheel type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0985393A JPH0985393A (en) | 1997-03-31 |
| JP3022277B2 true JP3022277B2 (en) | 2000-03-15 |
Family
ID=17158123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7247079A Expired - Fee Related JP3022277B2 (en) | 1995-09-26 | 1995-09-26 | Pouring nozzle for belt wheel type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3022277B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005007321A1 (en) * | 2003-07-23 | 2005-01-27 | Showa Denko K.K. | Continuous casting method, cast member, metal worked article, and continuous casting apparatus |
| US7681626B2 (en) | 2003-07-23 | 2010-03-23 | Showa Denko K.K. | Continuous casting method, cast member, metal worked article, and continuous casting apparatus |
-
1995
- 1995-09-26 JP JP7247079A patent/JP3022277B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0985393A (en) | 1997-03-31 |
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