JPH10156488A - Continuous casting apparatus - Google Patents
Continuous casting apparatusInfo
- Publication number
- JPH10156488A JPH10156488A JP31440596A JP31440596A JPH10156488A JP H10156488 A JPH10156488 A JP H10156488A JP 31440596 A JP31440596 A JP 31440596A JP 31440596 A JP31440596 A JP 31440596A JP H10156488 A JPH10156488 A JP H10156488A
- Authority
- JP
- Japan
- Prior art keywords
- crucible
- sleeve
- continuous casting
- cylindrical sleeve
- metal
- 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.)
- Granted
Links
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- Continuous Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、金属を溶解また
は溶湯を保温する容器から溶湯を凝固させながら連続的
に引き抜いて鋳造する連続鋳造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting apparatus for continuously drawing and casting a molten metal while solidifying the molten metal from a container for melting the metal or keeping the temperature of the molten metal.
【０００２】[0002]
【従来の技術】従来の連続鋳造装置は溶解、または保温
装置として、例えばセラミック、または黒鉛の定型、ま
たは不定型のるつぼを用い、このるつぼの底部に黒鉛の
円筒を取付けてその黒鉛の筒に溶湯を通して金属を連続
鋳造する装置であった。2. Description of the Related Art A conventional continuous casting apparatus uses a fixed or irregular shaped crucible made of, for example, ceramic or graphite as a melting or heat retaining apparatus, and attaches a graphite cylinder to the bottom of the crucible and attaches it to the graphite cylinder. It was an apparatus that continuously casts metal through molten metal.
【０００３】[0003]
【発明が解決しようとする課題】前記従来の構成では、
溶湯はセラミック、または黒鉛のるつぼに接触してお
り、溶解中、または保温中にるつぼからのガスやセラミ
ック、または黒鉛が混入して汚染される問題がある。ま
たセラミック、または黒鉛のるつぼは溶損、または酸化
が起こるために高融点金属の連続鋳造が困難であった。In the above-mentioned conventional configuration,
Since the molten metal is in contact with the ceramic or graphite crucible, there is a problem that the gas or ceramic or graphite from the crucible is mixed during melting or keeping the temperature and contaminated. In addition, since the crucible made of ceramic or graphite is eroded or oxidized, it is difficult to continuously cast a refractory metal.
【０００４】この発明は上記課題を解決するためになさ
れたもので、その目的とするところは、るつぼ形の浮揚
溶解装置を用いて高純度金属ないし高融点金属の連続鋳
造を可能とするとともに、溶湯全体が浮揚力を消失して
るつぼ底および流出口に凝固した際にこれを容易に除去
できるようにした連続鋳造装置を提供することにある。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to enable continuous casting of a high-purity metal or a high-melting-point metal using a crucible-shaped flotation melting apparatus. It is an object of the present invention to provide a continuous casting apparatus in which when the entire molten metal loses its buoyancy and solidifies at a crucible bottom and an outflow port, it can be easily removed.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明によ
れば、有底の円筒状に形成されその底部に溶湯を出す流
出口を有する良導電金属製のるつぼと、るつぼの外径側
に設けられた誘導コイルと、誘導コイルに高周波電流を
供給する交流電源とを備えてなる浮揚溶解装置、前記流
出口に装着され連続鋳造時にその内部を通過する溶湯を
冷却し凝固させる黒鉛製のスリーブ、このスリーブを外
表面から冷却する冷却器、および前記スリーブ内で凝固
した鋳片を下方に引き抜く引き抜き装置から構成すると
ともに、前記スリーブと冷却器とをそれぞれ周方向で少
なくとも２分割構成とした連続鋳造装置とする。According to the first aspect of the present invention, a crucible made of a good conductive metal having a bottomed cylindrical shape and having an outlet for discharging molten metal at the bottom thereof, and an outer diameter side of the crucible A flotation and melting apparatus comprising an induction coil provided in the apparatus and an AC power supply for supplying a high-frequency current to the induction coil, made of graphite which is attached to the outlet and cools and solidifies the molten metal passing therethrough during continuous casting. A sleeve, a cooler that cools the sleeve from the outer surface, and a drawing device that pulls down the slab solidified in the sleeve, and the sleeve and the cooler each have at least two circumferentially divided parts. It will be a continuous casting device.
【０００６】上記構成により、被溶解金属はるつぼとは
非接触の浮揚状態で溶解、保温されるのでるつぼからの
異物の混入がなく非汚染で高純度な溶湯を得ることが可
能になる。また、るつぼ内の溶湯が減少する等で浮遊力
を失いるつぼ底や流出口内で凝固した場合には、分割構
成にした冷却器とスリーブとを径方向に引き離して取り
外すことにより、スリーブ内に在ったるつぼ内の凝固金
属に連らなる鋳片を露出させることができ、この露出し
た鋳片をるつぼ下方の適宜位置で切断することにより残
りの部分をるつぼ内の凝固金属ごとるつぼ内から上方に
引き上げて容易に除去できるようになる。According to the above configuration, the metal to be melted is melted and kept warm in a floating state without contact with the crucible, so that it is possible to obtain a non-contaminated, high-purity molten metal without entry of foreign matter from the crucible. If the molten metal in the crucible solidifies in the crucible bottom or in the outlet, which loses buoyancy due to a decrease in the amount of molten metal in the crucible, etc. The slab connected to the solidified metal in the crucible can be exposed, and the exposed slab is cut at an appropriate position below the crucible, so that the remaining portion of the solidified metal in the crucible can be exposed from above the crucible. To be easily removed.
【０００７】請求項２記載の発明によれば、請求項１記
載の連続鋳造装置において、前記スリーブの分割位置を
前記冷却器の分割位置間の中間位置に位置させた連続鋳
造装置とする。上記の構成により、スリーブと冷却器の
分割位置が相互に遠く離れて位置するので、スリーブの
分割部を通じて溶湯が不測に外部に洩れ出すのを防止す
ることができる。According to a second aspect of the present invention, in the continuous casting apparatus of the first aspect, the split position of the sleeve is located at an intermediate position between the split positions of the cooler. According to the above configuration, since the split position of the sleeve and the cooler is located far apart from each other, it is possible to prevent the molten metal from leaking outside through the split portion of the sleeve.
【０００８】[0008]
【発明の実施の形態】以下、この発明の実施の形態を図
１ないし図２に基づいて説明する。図１において、１は
有底の円筒状に形成され円筒状部に放射状に略等間隔で
設けられた縦長のスリットを有し、かつ底部に溶湯２の
流出口１ａを有する良導電金属製のるつぼ、３ａは被溶
解材に、電磁誘導によって流れる渦電流を利用して主に
溶解、加熱電力を与える上誘導コイル、３ｂは被溶解材
に、電磁誘導によって流れる渦電流を利用して溶湯に浮
揚力を与える下誘導コイル、４ａは上誘導コイル３ａに
電流を供給する交流電源，４ｂは下誘導コイル３ｂに電
流を供給する交流電源でありこれらの要素で浮揚溶解装
置を構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a well-conductive metal formed in a cylindrical shape with a bottom and having vertically elongated slits radially provided at substantially equal intervals in a cylindrical portion and having an outlet 1a of a molten metal 2 at a bottom portion. The crucible 3a mainly gives melting and heating power to the material to be melted by using eddy current flowing by electromagnetic induction, and the induction coil 3b gives the material to be melted to the molten metal by using eddy current flowing by electromagnetic induction. The lower induction coil for giving a levitation force, 4a is an AC power supply for supplying current to the upper induction coil 3a, and 4b is an AC power supply for supplying current to the lower induction coil 3b. These elements constitute a levitation melting apparatus.
【０００９】５は流出口１ａに装着された、溶湯２をそ
の内部を通過中に冷却、凝固させる黒鉛製の円筒でなる
スリーブ（このスリーブが鋳型となる）、６は内部に冷
却水を通す給水路６ａおよび排水路６ｂが形成され円筒
スリーブ５を包囲して配設された冷却器、７は連続鋳造
時に円筒スリーブ５内に先端部が挿入される棒状のスタ
ーティングブロック、８はスターティングブロック７お
よび鋳造された鋳片を引き抜く引き抜き装置としてのピ
ンチロールであり、これらは上記の浮揚溶解装置ととも
に連続鋳造装置を構成している。Reference numeral 5 denotes a sleeve made of graphite which is attached to the outlet 1a and cools and solidifies the molten metal 2 while passing through the interior (this sleeve serves as a mold). A cooler provided with a water supply passage 6a and a drainage passage 6b and surrounding the cylindrical sleeve 5, a rod-shaped starting block 7 into which the tip is inserted into the cylindrical sleeve 5 during continuous casting, and 8 a starting A block 7 and a pinch roll as a drawing device for pulling out the cast slab, constitute a continuous casting device together with the flotation melting device described above.
【００１０】るつぼ１は電気的に絶縁された２つ以上の
セグメントを誘導コイル３ａ，３ｂの内側に並べて構成
され、この場合その底部に冷却器６の上部を適宜の隙間
をあけて包囲する出湯管部１ｂが一体に形成されてい
る。このるつぼ１内に被溶解材料を入れ、誘導コイル３
ａ，３ｂに所定の電流を供給すると、誘導コイル３ａ，
３ｂで発生する磁束はセグメント間のスリットの隙間か
らるつぼ内に進入して被溶解材料と鎖交する。るつぼ１
を構成する各セグメントは溶損しないように内部に冷却
水を通す水路１ｃが形成され水冷されている。The crucible 1 is constituted by arranging two or more electrically insulated segments inside the induction coils 3a and 3b. In this case, a taphole surrounding the upper portion of the cooler 6 with an appropriate gap at the bottom thereof. The tube part 1b is formed integrally. The material to be melted is put into the crucible 1 and the induction coil 3
When a predetermined current is supplied to the induction coils 3a, 3b,
The magnetic flux generated in 3b enters the crucible through the gap between the slits between the segments and interlinks with the material to be melted. Crucible 1
Are formed with a water passage 1c through which cooling water passes so as not to be melted and are water-cooled.
【００１１】誘導コイル３ａ，３ｂの電流は、電気的に
絶縁されたそれぞれのセグメントに渦電流を誘導すると
ともに、被溶解材料にも渦電流を誘導する。このるつぼ
１と被溶解材料とに流れる渦電流の方向は対向する表面
部分では互いに逆方向を向いているので磁気的に反発力
となり、るつぼ１は固定されているので被溶解材料には
浮揚力が働きこの浮揚力が被溶解材料の重量より大きけ
れば被溶解材料はるつぼ１から離れて浮揚する。被溶解
材料は抵抗損により熱を発生して加熱しつづける。この
ために被溶解材料は溶解金属となりかつ浮揚状態が保持
される。The current in the induction coils 3a and 3b induces an eddy current in each of the electrically insulated segments and also induces an eddy current in the material to be melted. Since the directions of the eddy currents flowing in the crucible 1 and the material to be melted are opposite to each other at the opposing surface portions, magnetic repulsion is generated. Since the crucible 1 is fixed, a levitation force is applied to the material to be melted. When the levitation force is greater than the weight of the material to be melted, the material to be melted floats away from the crucible 1. The material to be melted generates heat due to resistance loss and keeps heating. For this reason, the material to be melted becomes a molten metal and the floating state is maintained.
【００１２】ここで浮揚状態の溶解金属はるつぼ１内面
との接触を防ぐために、るつぼ１内の中央部に安定して
位置することが望ましい。このるつぼ１内で安定して浮
揚させるために、るつぼ底部側になるほど溶解金属の重
量に対抗するるつぼ１からの電磁反発力を大きくする必
要がある。この電磁反発力をるつぼ底部で大きくするた
めに、るつぼ底部に巻かれた下誘導コイル３ｂには上誘
導コイル３ａに比べて大きい浮揚力が得られるように低
い周波数の交流電源４ｂから電流を供給し、上誘導コイ
ル３ａには被溶解材料を溶解する高周波電流が別の交流
電源４ａから供給される。そして、下誘導コイル３ｂが
出湯管部１ｂの外径側にかけて設けられることにより、
出湯状態から出湯を停止するときに、所定の周波数の電
流を下誘導コイル３ｂに流して出湯状態にある溶湯に強
い横絞り力を発生させて溶湯を絞り切るようになってい
る。Here, it is desirable that the molten metal in a floating state is stably located at the center of the crucible 1 in order to prevent contact with the inner surface of the crucible 1. In order to stably float in the crucible 1, it is necessary to increase the electromagnetic repulsion force from the crucible 1 against the weight of the molten metal toward the bottom of the crucible. In order to increase the electromagnetic repulsion at the bottom of the crucible, a current is supplied to the lower induction coil 3b wound around the bottom of the crucible from an AC power supply 4b having a lower frequency so as to obtain a larger levitation force than the upper induction coil 3a. Then, a high-frequency current for melting the material to be melted is supplied from another AC power supply 4a to the upper induction coil 3a. And since the lower induction coil 3b is provided over the outer diameter side of the tapping pipe section 1b,
When the tapping is stopped from the tapping state, a current of a predetermined frequency is caused to flow through the lower induction coil 3b to generate a strong lateral drawing force in the tapping molten metal, thereby narrowing the tapping metal.
【００１３】上記のように、連続鋳造に使用する金属の
溶解および保温用の装置を浮揚溶解装置とすることによ
り、溶解時に溶湯が他の物と接触しないために異物の混
入が極めて少ないこと、融点の高い材料でも溶解が可能
であること、熱伝導損失が小さいこと等の特徴が利用で
きる。また、るつぼ１の流出口１ａに装着された黒鉛製
の円筒スリーブ５を冷却器６で冷却することにより、円
筒スリーブ５の温度を低く抑えて、円筒スリーブ５内を
通過して冷却される溶湯すなわち鋳片に、円筒スリーブ
５の炭素成分が溶出して混入するのを少なく抑えること
ができる。As described above, by using a floating melting device as a device for melting and keeping heat of a metal used for continuous casting, the molten metal does not come into contact with other objects at the time of melting. Features such as the ability to dissolve even a material having a high melting point and a small heat conduction loss can be used. Further, the temperature of the cylindrical sleeve 5 is kept low by cooling the graphite cylindrical sleeve 5 attached to the outflow port 1a of the crucible 1 by the cooler 6, so that the molten metal that passes through the cylindrical sleeve 5 and is cooled. That is, it is possible to suppress the carbon component of the cylindrical sleeve 5 from being eluted and mixed into the cast piece.
【００１４】ここまでの構成で連続鋳造は以下のように
実施される。まず浮揚溶解装置を構成するるつぼ１内に
溶解材料が投入されて溶解運転が開始され、溶解材料は
るつぼ１内で浮揚した状態で溶解される。溶解終了後直
ちにあるいは保温運転を経た後、スターティングブロッ
ク７がその先端が流出口１ａに臨む位置まで円等スリー
ブ５内に下端側から挿入される。そして主に下誘導コイ
ル３ｂへの電力を浮揚力を弱めるように調整して出湯を
開始し、同時にピンチロール８を駆動してスターティン
グブロック７を徐々に引き抜き操作し連続鋳造運転に移
行する。With the above-described configuration, continuous casting is performed as follows. First, the melting material is put into the crucible 1 constituting the flotation melting apparatus, and the melting operation is started, and the melting material is melted while floating in the crucible 1. Immediately after the dissolution is completed or after the warming operation, the starting block 7 is inserted into the sleeve 5 such as a circle from the lower end to a position where the leading end faces the outlet 1a. Then, the tapping roll 8 is driven mainly by adjusting the power to the lower induction coil 3b so as to weaken the levitation force, and simultaneously, the pinch roll 8 is driven to gradually pull out the starting block 7 to shift to the continuous casting operation.
【００１５】すなわち、スターティングブロック７を徐
々に引き抜くと溶湯が円筒スリーブ５内を通過する過程
で冷却されて先のものから凝固して円柱状の鋳片とな
る。この鋳片の形成によりスターティングブロック７の
引き抜き抵抗が増大するが、鋳片は先のものがスターテ
ィングブロック７の先端に溶着するので以降はその引き
抜き抵抗に抗してスターティングブロック７が強制的に
引き抜かれる。図１はスターティングブロック７を円筒
スリーブ５から完全に引き抜いた状態を示しており、こ
の状態からさらにスターティングブロック７を引き抜い
た後は、鋳造された円柱状の鋳片がピンチロール８によ
って引き抜き操作され、連続鋳造が続行される。That is, when the starting block 7 is gradually pulled out, the molten metal is cooled while passing through the inside of the cylindrical sleeve 5 and solidifies from the previous one to form a cylindrical cast piece. Due to the formation of the cast slab, the pull-out resistance of the starting block 7 increases. However, since the cast slab is welded to the tip of the starting block 7, the starting block 7 is forcibly resisted from the pull-out resistance thereafter. Is pulled out. FIG. 1 shows a state in which the starting block 7 is completely pulled out of the cylindrical sleeve 5. After the starting block 7 is further pulled out of this state, the cast cylindrical slab is pulled out by a pinch roll 8. It is operated and continuous casting is continued.
【００１６】ここで、浮揚溶解装置はるつぼ内の溶湯量
が極端に少なくなってくると浮揚のための電力の効率が
悪化してその浮揚力が急に消失することが知られてい
る。上記の構成でこのような現象が不測に生じるとスリ
ーブ５内に鋳片が在るために溶湯はるつぼ底に溜まり、
水冷されているるつぼ１に接触することによって急速に
凝固する。こうなるとそのまま再溶解することが困難と
なり、また鋳片を引き抜くことができなくなるので、る
つぼ底に凝固している金属を取り除く必要がある。Here, it is known that when the amount of molten metal in the crucible becomes extremely small, the efficiency of electric power for levitation deteriorates and the levitation force of the levitation melting device suddenly disappears. If such a phenomenon occurs unexpectedly in the above configuration, the molten metal accumulates at the bottom of the crucible due to the presence of the slab in the sleeve 5,
It rapidly solidifies by contacting the water-cooled crucible 1. In such a case, it is difficult to re-dissolve the slab as it is, and the slab cannot be pulled out. Therefore, it is necessary to remove the metal solidified at the bottom of the crucible.
【００１７】この凝固金属の除去を容易に行うために、
図２に示すように、円筒スリーブ５と冷却器６は周方向
でこの場合それぞれ２分割された構造になっている。な
お図２では円筒スリーブ５および冷却器６の分割位置を
明瞭に示すために分割部に隙間をあけて図示している
が、実際には隙間がなく分割面相互はぴったり合った構
造になっている。この円筒スリーブ５と冷却器６の分割
部は図示のように相互に９０°位置をずらせて設け、円
筒スリーブ５の分割位置を冷却器６の分割位置間の中間
に位置させることにより、円筒スリーブ５の分割部を通
じて溶湯が不測に外部に洩れ出すことが防止される。な
お、２分割の他に３分割や４分割でも実施できる。In order to easily remove the solidified metal,
As shown in FIG. 2, the cylindrical sleeve 5 and the cooler 6 have a structure that is divided into two in the circumferential direction in this case. In FIG. 2, in order to clearly show the division positions of the cylindrical sleeve 5 and the cooler 6, the divisions are shown with a gap, but in actuality, there is no gap and the division surfaces have a structure in which the division surfaces are closely fitted to each other. I have. The divided portions of the cylindrical sleeve 5 and the cooler 6 are provided so as to be shifted from each other by 90 ° as shown in the figure, and the divided position of the cylindrical sleeve 5 is located at an intermediate position between the divided positions of the cooler 6, thereby forming the cylindrical sleeve. The molten metal is prevented from unexpectedly leaking to the outside through the divisional portion of No. 5. It should be noted that, in addition to two divisions, three or four divisions can be used.
【００１８】さて、上記した分割構造ではなく、円筒ス
リーブ５と冷却器６とが一体構造の場合は、凝固金属の
除去に際し、まずピンチローラ８で引き抜かれている鋳
片をピンチローラ８と冷却器６との間の適当な位置で切
断しその切断口をグラインダなどで滑らかに仕上げる。
そして冷却器６を適当位置まで引き下ろし、次いで円筒
スリーブ５をその流出口１ａへの装着を外して鋳片の切
断口よりも下方に引き下ろすことにより、るつぼ内の凝
固金属を切断した残りの鋳片とともに、るつぼ内から上
方に引き上げて除去する。In the case where the cylindrical sleeve 5 and the cooler 6 are of an integral structure instead of the above-described divided structure, when removing the solidified metal, first, the cast piece drawn by the pinch roller 8 is cooled with the pinch roller 8. It is cut at an appropriate position between the container 6 and the cut end is smoothly finished with a grinder or the like.
Then, the cooler 6 is pulled down to an appropriate position, and then the cylindrical sleeve 5 is detached from its outlet 1a and pulled down below the cut end of the slab, thereby cutting the remaining solidified metal in the crucible. Along with the piece, it is removed by pulling it upward from the crucible.
【００１９】このような作業では円筒スリーブ５の引き
下ろしに際し、円筒スリーブ５の内面が鋳片の切断口に
よって損傷しないように、上記のようなグラインダでの
作業が不可欠であり、かつ円筒スリーブ５は鋳片に対し
て真っ直ぐにかつ慎重に引き下ろさなければ容易に抜け
ないなど、作業が煩雑になりかつ復旧時間が長引く。ま
た、円筒スリーブ５を鋳片よりも下方に引き下ろすに
は、るつぼ１とピンチローラ８の相互間の設置間隔を相
当大きくしておかなけれはならず、装置全体の設置に要
する専有空間が増大するなどの問題がある。In such an operation, when the cylindrical sleeve 5 is pulled down, the above-mentioned operation with the grinder is indispensable so that the inner surface of the cylindrical sleeve 5 is not damaged by the cut end of the slab. The work becomes complicated, and the recovery time is prolonged, for example, the slab cannot be easily pulled out unless it is pulled down straight and carefully. Also, in order to pull down the cylindrical sleeve 5 below the slab, the interval between the crucible 1 and the pinch roller 8 must be considerably increased, and the exclusive space required for installation of the entire apparatus increases. Problems.
【００２０】これに対し、円筒スリーブ５と冷却器６と
が分割構成になる上記構成の連続鋳造装置では、凝固金
属の除去に際し、まず冷却器６を出湯管部１ｂ内から引
き下ろしてその分割部分で分離し径方向に引き離す。そ
してるつぼの流出口１ａから円筒スリーブ５の装着を外
してその分割部分で径方向に引き離すことにより、円筒
スリーブ５内に在った鋳片を露出させる。次いで露出し
た鋳片を適当な位置で切断すれば、るつぼ内の凝固金属
を切断した残りの鋳片とともに、るつぼ内から上方に引
き上げて容易に除去できる。On the other hand, in the continuous casting apparatus having the above-described configuration in which the cylindrical sleeve 5 and the cooler 6 are divided, when removing the solidified metal, the cooler 6 is first pulled down from the tapping pipe portion 1b and the divided portion is removed. And separate in the radial direction. Then, the cylindrical sleeve 5 is detached from the outlet 1a of the crucible, and is separated in the radial direction at the divided portion to expose the slab existing in the cylindrical sleeve 5. Next, by cutting the exposed slab at an appropriate position, the solidified metal in the crucible can be easily removed by pulling it up from the crucible together with the remaining slab.
【００２１】このように、円筒スリーブ５と冷却器６と
を分割構造にしておくと、不測にるつぼ内に凝固した金
属を簡単な作業で除去できて復旧時間が短縮できるとと
もに、円筒スリーブ５と冷却器６とを径方向に引き離す
ので、るつぼ１とピンチローラ８の相互間の設置間隔に
余裕を持たせる必要がなく、装置全体の設置に要する専
有空間が最小限に抑えるられる。As described above, if the cylindrical sleeve 5 and the cooler 6 are divided, the solidified metal in the crucible can be removed by a simple operation, and the recovery time can be shortened. Since the cooling device 6 is separated from the cooling device 6 in the radial direction, it is not necessary to provide a margin in the installation interval between the crucible 1 and the pinch roller 8, and the exclusive space required for installation of the entire apparatus is minimized.
【００２２】[0022]
【発明の効果】この発明によれば、溶解部を浮揚溶解装
置としたので、高純度ないし高融点金属の連続鋳造を可
能とすることができるとともに、装置の設置空間を増大
させることなしに、るつぼ内に不測に凝固した金属を簡
単な作業で除去でき、その復旧時間が短縮できるという
効果を奏する。According to the present invention, since the melting section is a floating melting apparatus, continuous casting of a high-purity or high-melting-point metal can be performed without increasing the installation space of the apparatus. It is possible to easily remove the solidified metal in the crucible by a simple operation, and to shorten the recovery time.
【００２３】また、スリーブの分割位置を冷却器の分割
位置間の中間位置に位置させることにより、スリーブの
分割部を通じて溶湯が不測に外部に洩れ出すのを防止す
ることができる効果がある。Further, by positioning the split position of the sleeve at an intermediate position between the split positions of the cooler, it is possible to prevent the molten metal from leaking outside through the split portion of the sleeve.
【図１】この発明の実施の形態を示す連続鋳造装置の構
成図FIG. 1 is a configuration diagram of a continuous casting apparatus showing an embodiment of the present invention.
【図２】図１のＡ−Ａ断面図FIG. 2 is a sectional view taken along line AA of FIG. 1;
１ るつぼ １ａ 流出口 ２ 溶湯 ３ａ 上誘導コイル ３ｂ 下誘導コイル ４ａ，４ｂ 交流電源 ５ スリーブ ６ 冷却器 ７ スターティングブロック ８ ピンチロール DESCRIPTION OF SYMBOLS 1 Crucible 1a Outflow port 2 Melt 3a Upper induction coil 3b Lower induction coil 4a, 4b AC power supply 5 Sleeve 6 Cooler 7 Starting block 8 Pinch roll
Claims (2)
出す流出口を有する良導電金属製のるつぼと、るつぼの
外径側に設けられた誘導コイルと、誘導コイルに高周波
電流を供給する交流電源とを備えてなる浮揚溶解装置、
前記流出口に装着され連続鋳造時にその内部を通過する
溶湯を冷却し凝固させる黒鉛製のスリーブ、このスリー
ブを包囲して設けられこのスリーブを外表面から冷却す
る冷却器、および前記スリーブ内で凝固した鋳片を下方
に引き抜く引き抜き装置から構成するとともに、前記ス
リーブと冷却器とをそれぞれ周方向で少なくとも２分割
構成としたことを特徴とする連続鋳造装置。1. A crucible made of a good conductive metal formed in a bottomed cylindrical shape and having an outlet for discharging molten metal at the bottom, an induction coil provided on the outer diameter side of the crucible, and a high-frequency current supplied to the induction coil. A flotation melting device comprising an AC power supply for supplying;
A graphite sleeve which is mounted on the outlet and cools and solidifies the molten metal passing therethrough during continuous casting, a cooler provided surrounding the sleeve and cooling the sleeve from the outer surface, and solidifying in the sleeve A continuous casting apparatus comprising a drawing device for pulling out the cast slab downward, and wherein the sleeve and the cooler are each configured to be at least divided into two in the circumferential direction.
記スリーブの分割位置を前記冷却器の分割位置間の中間
位置に設けたことを特徴とする連続鋳造装置。2. The continuous casting apparatus according to claim 1, wherein the split position of the sleeve is provided at an intermediate position between the split positions of the cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31440596A JP3570124B2 (en) | 1996-11-26 | 1996-11-26 | Continuous casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31440596A JP3570124B2 (en) | 1996-11-26 | 1996-11-26 | Continuous casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10156488A true JPH10156488A (en) | 1998-06-16 |
| JP3570124B2 JP3570124B2 (en) | 2004-09-29 |
Family
ID=18052958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31440596A Expired - Fee Related JP3570124B2 (en) | 1996-11-26 | 1996-11-26 | Continuous casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3570124B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147964A (en) * | 2000-11-08 | 2002-05-22 | Shinko Electric Co Ltd | Induction heating melting furnace and bottom tap mechanism |
-
1996
- 1996-11-26 JP JP31440596A patent/JP3570124B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147964A (en) * | 2000-11-08 | 2002-05-22 | Shinko Electric Co Ltd | Induction heating melting furnace and bottom tap mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3570124B2 (en) | 2004-09-29 |
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