JPS6030558A - Tundish for continuous casting having electric melting furnace - Google Patents

Tundish for continuous casting having electric melting furnace

Info

Publication number
JPS6030558A
JPS6030558A JP13808183A JP13808183A JPS6030558A JP S6030558 A JPS6030558 A JP S6030558A JP 13808183 A JP13808183 A JP 13808183A JP 13808183 A JP13808183 A JP 13808183A JP S6030558 A JPS6030558 A JP S6030558A
Authority
JP
Japan
Prior art keywords
continuous casting
melting furnace
airtight container
electric melting
steel
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
Application number
JP13808183A
Other languages
Japanese (ja)
Other versions
JPH0113947B2 (en
Inventor
Shigeharu Yamada
山田 重治
Hideo Kaneko
金子 英夫
Shiro Nishiwaki
西脇 司郎
Akihiko Morita
明彦 守田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP13808183A priority Critical patent/JPS6030558A/en
Publication of JPS6030558A publication Critical patent/JPS6030558A/en
Publication of JPH0113947B2 publication Critical patent/JPH0113947B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal

Abstract

PURPOSE:To perform rationally continuous casting of a small amt. of high- quality special steel by attaching melting equipment for casting metal to a tundish for continuous casting. CONSTITUTION:A heating coil 7 is attached to a hermetic vessel 1 having a freely removable hermetic bottom cap 2. A continuous casting mold 8 is provided in the upper part and is made turnable around a shaft 4. A steel material which is a raw material is put into an electric melting furnace 6 having the coil 7 and is heated to melt by the coil 7 in the stage of casting continuously a relatively small amt. of high-quality special steel to the billet. An inert gas 12A such as gaseous Ar is supplied through the inlet provided to the cap 2 into the molten steel 14 to stir the steel 14 and to maintain the atmosphere on molten slag 15 non-oxidative thereby preventing oxidation of the molten steel. When the steel 14 is thoroughly melted, the vessel 1 is upset 180 deg. around the shaft 4 to position the mold 8 downward then the molten steel is put therein and is cast continuously in a horizontal direction by a dummy bar 16.

Description

【発明の詳細な説明】 (a)産業上の利用分野 本発明は1つの気密容器内に電気溶解炉とタンディツシ
ュが、一体的に形成された電気溶解炉を有する連続鋳造
用タンディツシュに関し、主として、高品質の特殊金属
ビレットを少量生産する連続鋳造分野で利用されるもの
である。
DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a continuous casting tundish having an electric melting furnace in which an electric melting furnace and a tundish are integrally formed in one airtight container. It is used in the continuous casting field to produce small quantities of high-quality special metal billets.

(b)従来技術 従来の連続鋳造では、例えば転炉または電気溶解炉など
で熔解された溶鋼がレードルに受け取られた後連続鋳造
設備に搬送され、それがタンディツシュに注入されると
、その底部または下側部に設けられた鋳造用モールドか
らビレットが連続鋳造されるようになっている。
(b) Prior art In conventional continuous casting, molten steel melted in a converter or electric melting furnace, for example, is received in a ladle and then conveyed to continuous casting equipment, and when it is poured into a tundish, the bottom or Billets are continuously cast from a casting mold provided on the lower side.

このような連続鋳造は大量の溶融金属から数多くのビレ
ットを生産するのに好適であるので、幅広く採用されて
いる。しかし、連続鋳造されるビレットが高品質の特殊
鋼となると、その生産量が少なくなり、既存の容量の大
きい転炉や電気溶解炉などでは溶解が困難となることが
多く、所定量以上の原料が必要となったりする欠点があ
る。また、タンディツシュに搬送される溶鋼が少量であ
ると、全体の保有熱量が少ないので、搬送の間に溶鋼温
度の低下が著しくなり、しばしばモールドにおいて目詰
が生じて円清な連続鋳造が阻害される問題もある。
Since such continuous casting is suitable for producing a large number of billets from a large amount of molten metal, it has been widely adopted. However, when continuously cast billets become high-quality special steel, the production volume decreases, and it is often difficult to melt using existing large-capacity converters or electric melting furnaces. It has the disadvantage that it may require In addition, if the amount of molten steel transported to the tanditsu is small, the overall amount of heat retained is small, so the temperature of the molten steel will drop significantly during transportation, and the mold will often become clogged, inhibiting smooth continuous casting. There are also problems.

(C)発明の目的 本発明は上述の問題点を解決するためになされたもので
、少量のビレットを連続鋳造する場合に、それに応じた
量の溶鋼を得ることができると共に、その溶鋼の搬送工
程を無くしてその温度低下を回避し、かつ、ビレットを
垂直または水平に連続的に鋳造することができる非常に
小型で設備配置に柔軟性のある電気溶解炉を有する連続
鋳造用タンディツシュを提供することを目的とする。
(C) Purpose of the Invention The present invention has been made to solve the above-mentioned problems, and it is possible to obtain a corresponding amount of molten steel when continuously casting a small amount of billets, and to transport the molten steel. To provide a tundish for continuous casting that eliminates a step and avoids a temperature drop, and has an extremely small electric melting furnace that can continuously cast billets vertically or horizontally and is flexible in equipment arrangement. The purpose is to

(d)発明の構成 以下、本発明の構成を第1図を例にして説明すると、取
外し自在の密閉底蓋2を有する気密容器1に溶解用コイ
ル7が外囲された電気溶解炉6が形成され、この電気溶
解炉6の上部に連続鋳造用モールド8が設けられている
と共に、電気溶解炉6が垂直面内で回動するように、気
密容器lが回動自在に支承されている電気溶解炉を有す
る連続鋳造用タンディツシュである。
(d) Structure of the Invention Below, the structure of the present invention will be explained using FIG. A continuous casting mold 8 is provided above the electric melting furnace 6, and an airtight container l is rotatably supported so that the electric melting furnace 6 can rotate in a vertical plane. This is a continuous casting tundish equipped with an electric melting furnace.

(e)実施例 以下、本発明をその実施例に基づいて説明する。(e) Examples Hereinafter, the present invention will be explained based on examples thereof.

第1図は電気溶解炉を有する連続鋳造用タンディツシュ
の全体断面図で、図中、1は取外し自在の密閉底蓋2を
有する1つの気密容器である。この気密容器1には耐火
材3が内張すされ、その中間部IAに設けられた軸4を
中心に矢符5方向に回動自在に支承されている。6は電
気溶解炉で、気密容器1内に形成され、耐火材3の周囲
に溶解用コイル7が外囲されている。8は電気溶解炉6
の上部に設けられている連続鋳造用モールドで、気密容
器1の上部側面IBで水平に、すなわち、気密容器1の
縦軸線1aに直交して設置されている。
FIG. 1 is an overall sectional view of a continuous casting tundish having an electric melting furnace, and in the figure, 1 is an airtight container having a removable closed bottom lid 2. This airtight container 1 is lined with a refractory material 3, and is rotatably supported in the direction of arrow 5 about a shaft 4 provided at an intermediate portion IA. Reference numeral 6 denotes an electric melting furnace, which is formed inside the airtight container 1, and has a melting coil 7 surrounding the refractory material 3. 8 is electric melting furnace 6
The mold for continuous casting is installed on the upper side of the airtight container 1 horizontally at the upper side surface IB of the airtight container 1, that is, perpendicular to the longitudinal axis 1a of the airtight container 1.

そして、このモールド8側方の隣合う位置に、溶解を促
進したり溶融成分調整に必要な副原料が投入される図示
しない副原料投入口や排滓口が密閉可能に設けられてい
る。また、真空ポンプにより気密容器1内の空気を抜取
るための空気排出口も設けられている。前述した密閉底
蓋2は、気密容器1が電気溶解炉6として機能している
ときには、その底部を形成するものであるが、例えば電
解鉄などの原料が投入されるときは原料投入口となる。
At adjacent positions on the sides of the mold 8, an auxiliary material inlet and a waste outlet (not shown) into which auxiliary materials necessary for promoting melting and adjusting molten components are introduced are provided in a sealable manner. An air outlet is also provided for removing air from the airtight container 1 using a vacuum pump. The above-mentioned sealed bottom lid 2 forms the bottom of the airtight container 1 when it functions as the electric melting furnace 6, but serves as a raw material input port when raw materials such as electrolytic iron are inputted. .

そして、この密閉底蓋2には、溶鋼の酸化を防止するた
めの不活性ガスまたは擬似不活性ガスを供給するガス供
給口12が必要に応じて設けられている。なお、この気
密容器lは、第2図に示すように、軸4を中心にして垂
直面内で180度回動した状態でその下部が連続鋳造用
タンディツシュを形成する。また、モールド8の内側に
ギロチン式のスライディングノズル13が設けられてい
る。
The hermetically sealed bottom lid 2 is provided with a gas supply port 12 for supplying an inert gas or pseudo-inert gas to prevent oxidation of molten steel, if necessary. As shown in FIG. 2, this airtight container 1 is rotated 180 degrees in a vertical plane about an axis 4, and its lower part forms a tundish for continuous casting. Furthermore, a guillotine-type sliding nozzle 13 is provided inside the mold 8.

このモールド8は第3図に示すように、反転している気
密容器1の上面IC(図示では下方に位置している)に
垂直に、すなわち、気密容器1の縦軸線1aに平行また
は一致して設けておいてもよい。前述の場合は水平連続
鋳造を行なうことができ、この場合は垂直連続鋳造を行
なうことができる。
As shown in FIG. 3, this mold 8 is perpendicular to the upper surface IC of the airtight container 1 which is being inverted (located below in the figure), that is, parallel to or coincident with the longitudinal axis 1a of the airtight container 1. You may also set it up. In the above case horizontal continuous casting can be carried out, in this case vertical continuous casting can be carried out.

このような実施例によれば、次のようにして少量の特殊
鋼ビレットを、円滑に連続鋳造することができる。
According to this embodiment, a small amount of special steel billets can be smoothly and continuously cast in the following manner.

まず、第4図に示すように気密容器1の密閉底蓋2が取
り外され、図示しない原料ホッパに貯留されている電解
鉄11が電気溶解炉5に投入される。所定量の原料が収
容されると、密閉底蓋2が閉止され、軸4を中心に第1
図に示す状態まで180度回動される。そして、必要な
量の副原料が副原料投入口より投入された後、それが密
閉される。次に、空気排出口から真空ポンプにより気密
容器1内の空気が抜取られる一方、必要に応じてガス供
給口12からアルゴンなどの不活性ガスまたは窒素など
の擬似不活性ガスが気密容器1内に供給される。気密容
器1がパージされると、電気溶解炉6の溶解用コイル7
が通電され、この溶解用コイル7の誘導電流により原料
が加熱されて溶融状態となる。なお、溶解中に発生する
排ガスは、空気排出口から真空ポンプにより気密容器1
外に導出され、溶鋼の酸化を防止するために必要に応じ
て不活性ガス12Aなどが補給される。溶鋼14の温度
が1500〜1600度程度になると、例えば図示しな
いサブランスが気密的に溶鋼14中に挿入されて、成分
比率が検査される。その結果に応じて適宜マンガン、シ
リコン、アルミナなどの副原料が投入され、所定の化学
成分比率を有する溶鋼とされる。なお、図中の15は溶
解により生じたスラグである。
First, as shown in FIG. 4, the airtight bottom cover 2 of the airtight container 1 is removed, and the electrolytic iron 11 stored in a raw material hopper (not shown) is charged into the electric melting furnace 5. When a predetermined amount of raw material is contained, the hermetic bottom lid 2 is closed, and the first
It is rotated 180 degrees to the state shown in the figure. Then, after the necessary amount of auxiliary raw material is inputted from the auxiliary raw material input port, it is sealed. Next, the air inside the airtight container 1 is extracted from the air outlet by a vacuum pump, while an inert gas such as argon or a pseudo-inert gas such as nitrogen is supplied into the airtight container 1 from the gas supply port 12 as needed. Supplied. When the airtight container 1 is purged, the melting coil 7 of the electric melting furnace 6
is energized, and the raw material is heated by the induced current in the melting coil 7 and becomes molten. In addition, the exhaust gas generated during melting is removed from the air outlet by a vacuum pump into the airtight container 1.
The molten steel is led out, and inert gas 12A is supplied as necessary to prevent oxidation of the molten steel. When the temperature of the molten steel 14 reaches about 1,500 to 1,600 degrees, a sub-lance (not shown), for example, is hermetically inserted into the molten steel 14 to inspect the component ratio. Depending on the results, auxiliary raw materials such as manganese, silicon, and alumina are added as appropriate to produce molten steel having a predetermined chemical composition ratio. Note that 15 in the figure is slag produced by melting.

溶解が完了すると、気密容器1がその中間部IAに設け
られている軸4を中心に矢符5方向に180度回動され
て第2図に示す状態となる。その際、溶鋼14がスラグ
15と共に耐火材3に沿って電気溶解炉6から連続鋳造
用モールド8方向に僅かな時間で移行する。そして、溶
解用コイル7の加熱程度が低減されて溶鋼14の保温が
図られる。モールド8には溶解に先立ちダミーバー16
が緊着挿入されているので、スライディングノズル13
を開口すると、モールド8内で溶鋼14とダミーバー1
6の先端が溶着して一体化される。
When the melting is completed, the airtight container 1 is rotated 180 degrees in the direction of the arrow 5 about the shaft 4 provided at the intermediate portion IA, and is in the state shown in FIG. 2. At this time, the molten steel 14 moves along the refractory material 3 together with the slag 15 from the electric melting furnace 6 toward the continuous casting mold 8 in a short time. Then, the degree of heating of the melting coil 7 is reduced, and the temperature of the molten steel 14 is maintained. A dummy bar 16 is placed in the mold 8 prior to melting.
is inserted tightly, so the sliding nozzle 13
When the molten steel 14 and the dummy bar 1 are opened in the mold 8,
The tips of 6 are welded and integrated.

そこで、ダミーバー16をピンチローラ17により矢符
18方向に引くと、溶鋼14がモールド8で所定の断面
形状のビレットに成形されて連続鋳造され、ローラテー
ブル19上を冷却されながら搬送される。
Then, when the dummy bar 16 is pulled in the direction of arrow 18 by the pinch roller 17, the molten steel 14 is formed into a billet with a predetermined cross-sectional shape in the mold 8, continuously cast, and conveyed on the roller table 19 while being cooled.

気密容器1内の溶鋼14が無くなると、スライディング
ノズル13が閉止され、連続鋳造が完了する。溶解用コ
イル7の通電を維持して図示しない排滓口を開口すると
、気密容器1内に残存しているスラグが、溶融状態で排
出される。なお、必要に応じて酸素トーチなどによって
も付着スラグが除去され、熔解コイル7による加熱が停
止され、1サイクルの鋳造作業が終了する。なお、第3
図に示すようにモールド8が気密容器1の上部でその縦
軸線1aに平行または一致して設けられている場合も、
同様に作動させれば、垂直連続鋳造することができる。
When the molten steel 14 in the airtight container 1 is exhausted, the sliding nozzle 13 is closed and continuous casting is completed. When the melting coil 7 is kept energized and a slag discharge port (not shown) is opened, the slag remaining in the airtight container 1 is discharged in a molten state. Note that the adhered slag is also removed using an oxygen torch or the like as necessary, and heating by the melting coil 7 is stopped, and one cycle of casting work is completed. In addition, the third
As shown in the figure, when the mold 8 is provided above the airtight container 1 parallel to or coinciding with its longitudinal axis 1a,
If operated in the same way, vertical continuous casting can be performed.

なお、第5図に示すように気密容器1の回動中心を、そ
の水平配置のモールド8の軸線8Aに一致させておいて
も良い。このような気密容器lの場合には、ダミ−バー
16自体が矢符20方向に回転するだけで、溶解に先立
ちモールド8に挿入されている長尺なダミーパー16が
、気密容器1の回動に連れて振れ回るといったことは回
避できる利点がある。
Note that, as shown in FIG. 5, the center of rotation of the airtight container 1 may be aligned with the axis 8A of the horizontally arranged mold 8. In the case of such an airtight container 1, the dummy bar 16 itself simply rotates in the direction of arrow 20, and the elongated dummy bar 16 inserted into the mold 8 prior to melting can rotate the airtight container 1. It has the advantage of being able to avoid being dragged around and being swung around.

以上の説明から判るように、気密容器のサイズに制限を
加えなければ、必ずしも少量のビレットを生産する場合
に限らなくても稼働させることができるし、特殊鋼に限
らず普通鋼や他の金属の連続鋳造ビレットを生産できる
ことも言うまでもない。
As can be seen from the above explanation, as long as there are no restrictions on the size of the airtight container, it can be used not only when producing small quantities of billets, but also when producing not only special steel but also ordinary steel and other metals. Needless to say, it is possible to produce continuously cast billets.

(、f)発明の効果 本発明は以上詳細に説明したように、1つの気密容器内
に電気溶解炉とタンディツシュとが一体的に形成されて
いるので、気密容器をコンパクトにすることができる。
(f) Effects of the Invention As described in detail above, in the present invention, since the electric melting furnace and the tundish are integrally formed in one airtight container, the airtight container can be made compact.

したがって、とりわけ少量のビレットを連続鋳造する場
合には、それに応じた量の溶鋼を得ることができると共
にその溶鋼を直ちに連続鋳造用モールド側に移行させる
ことができるので、溶鋼温度の低下が回避されまた溶解
用コイルで保温されて、モールドで目詰りを起こすこと
なく円滑に連続鋳造することができる。また、モールド
の装着位置を選択することができるので、垂直または水
平で連続鋳造することができる。その結果、付帯設備と
の兼ね合いを配慮して据え付は位置の調整を図ることが
極めて容易となる効果がある。
Therefore, especially when continuously casting a small amount of billets, a corresponding amount of molten steel can be obtained and the molten steel can be immediately transferred to the continuous casting mold side, thereby avoiding a drop in the molten steel temperature. In addition, the melting coil keeps the material warm and allows smooth continuous casting without clogging the mold. Furthermore, since the mounting position of the mold can be selected, continuous casting can be performed vertically or horizontally. As a result, it becomes extremely easy to adjust the installation position while taking into consideration the balance with the incidental equipment.

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

第1図は本発明の電気溶解炉を有する連続鋳造用タンデ
ィツシュを形成した気密容器の全体断面図で、電気溶解
炉による溶解状態図、第2図はその水平連続鋳造状態図
、第3図は垂直連続鋳造状態図、第4図は原料投入状態
の開口されている気密容器の断面図、第5図は回動中心
が水平連続鋳造用モールドの軸線にある場合の連続鋳造
状態図である。 1・・−気密容器、IA・−中間部、IB−上部側面、
1a−軸線、2−密閉底蓋、4−軸、6−・電気溶解炉
、7−溶解用コイル、8一連続鋳造用モールド 特許出願人 川崎重工業株式会社
Fig. 1 is an overall sectional view of an airtight container forming a continuous casting tundish having an electric melting furnace according to the present invention, and shows the state of melting in the electric melting furnace, Fig. 2 shows the state of horizontal continuous casting, and Fig. 3 shows the state of horizontal continuous casting. FIG. 4 is a sectional view of an open airtight container in a raw material charging state, and FIG. 5 is a diagram of continuous casting when the center of rotation is on the axis of the horizontal continuous casting mold. 1...-airtight container, IA--middle part, IB-upper side,
1a - axis, 2 - sealed bottom lid, 4 - axis, 6 - electric melting furnace, 7 - melting coil, 81 continuous casting mold patent applicant Kawasaki Heavy Industries, Ltd.

Claims (5)

【特許請求の範囲】[Claims] (1) 取外し自在の密閉底蓋を有する気密容器に溶解
用コイルが外囲された電気溶解炉が形成され、この電気
溶解炉の上部に連続鋳造用モールドが設けられていると
共に、 前記電気溶解炉が垂直面内で回動するように、前記気密
容器が同動自在に支承されていることを特徴とする電気
溶解炉を有する連続鋳造用タンディツシュe
(1) An electric melting furnace is formed in which a melting coil is surrounded by an airtight container having a removable sealed bottom lid, and a continuous casting mold is provided in the upper part of this electric melting furnace, and the electric melting A tundish for continuous casting having an electric melting furnace, characterized in that the airtight container is supported so that the furnace can rotate in a vertical plane.
(2) 前記気密容器の回動中心は、その気密容器の中
間部に設けられていることを特徴とする特許請求の範囲
第1項記載の電気溶解炉を有する連続鋳造用タンディツ
シュ。
(2) A tundish for continuous casting having an electric melting furnace as set forth in claim 1, wherein the center of rotation of the airtight container is provided at an intermediate portion of the airtight container.
(3) 前記連続鋳造用モールドは、前記気密容器の上
部でその縦軸線に平行または一致して設けられているこ
とを特徴とする特許請求の範囲第1項記載の電気溶解炉
を有する連続鋳造用タンディツシュ。
(3) Continuous casting having an electric melting furnace according to claim 1, wherein the continuous casting mold is provided in an upper part of the airtight container parallel to or coinciding with the longitudinal axis of the container. Tanditshu for.
(4) 前記連続鋳造用モールドは、前記気密容器の上
部側面でその縦軸線に直交して設けられていることを特
徴とする特許請求の範囲第1項記載の電気溶解炉を有す
る連続鋳造用タンディツシュ。
(4) The continuous casting mold having an electric melting furnace according to claim 1, wherein the continuous casting mold is provided on the upper side surface of the airtight container and perpendicular to the vertical axis thereof. Tanditshu.
(5) 前記連続鋳造用ノズルの軸線に一致して、前記
気密容器の回動中心が設けられていることを特徴とする
特許請求の範囲第4項記載の電気溶解炉を有する連続鋳
造用クンディツシュ。
(5) A kundish for continuous casting having an electric melting furnace according to claim 4, wherein the rotation center of the airtight container is provided to coincide with the axis of the continuous casting nozzle. .
JP13808183A 1983-07-27 1983-07-27 Tundish for continuous casting having electric melting furnace Granted JPS6030558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13808183A JPS6030558A (en) 1983-07-27 1983-07-27 Tundish for continuous casting having electric melting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13808183A JPS6030558A (en) 1983-07-27 1983-07-27 Tundish for continuous casting having electric melting furnace

Publications (2)

Publication Number Publication Date
JPS6030558A true JPS6030558A (en) 1985-02-16
JPH0113947B2 JPH0113947B2 (en) 1989-03-08

Family

ID=15213511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13808183A Granted JPS6030558A (en) 1983-07-27 1983-07-27 Tundish for continuous casting having electric melting furnace

Country Status (1)

Country Link
JP (1) JPS6030558A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741559A (en) * 2013-12-27 2015-07-01 北京有色金属研究总院 Equipment and technical method suitable for 5356 aluminium alloy continuous casting fine forming

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741559A (en) * 2013-12-27 2015-07-01 北京有色金属研究总院 Equipment and technical method suitable for 5356 aluminium alloy continuous casting fine forming

Also Published As

Publication number Publication date
JPH0113947B2 (en) 1989-03-08

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