JPH0428462B2 - - Google Patents
Info
- Publication number
- JPH0428462B2 JPH0428462B2 JP12358186A JP12358186A JPH0428462B2 JP H0428462 B2 JPH0428462 B2 JP H0428462B2 JP 12358186 A JP12358186 A JP 12358186A JP 12358186 A JP12358186 A JP 12358186A JP H0428462 B2 JPH0428462 B2 JP H0428462B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- molten metal
- nozzle body
- tundish
- continuous casting
- 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
Links
- 239000002184 metal Substances 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 238000009749 continuous casting Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000003749 cleanliness Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
- B22D11/119—Refining the metal by filtering
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は双ロール法，ドラム・ベルト法，双ベ
ルト法など移動鋳型による広幅薄肉鋳片の連続鋳
造に関し、とくに表面性状および内部清浄度の優
れた鋳片を得るための注入ノズルの構造に関す
る。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to the continuous casting of wide thin slabs using a moving mold such as the twin roll method, drum/belt method, and double belt method, with particular emphasis on surface quality and internal cleanliness. This article relates to the structure of an injection nozzle for obtaining excellent slabs.
（従来の技術）
近年、鋼の連続鋳造分野では、広幅薄肉鋳片の
製造技術の開発が強く望まれ、第２図に示すよう
な(a)双ロール法、(b)ドラム・ベルト法、(c)双ベル
ト法など移動鋳型による連続鋳造法が提案されて
いる。第２図において２１はタンデイツシユ、２
２は注入ノズル、２３は湯溜り部、２４は回転ロ
ール、２５は移動ベルト、２６は鋳片である。こ
れらの鋳造法においては、鋳片の表面性状および
内部清浄度を安定して高水準に維持することが重
要な課題である。(Conventional technology) In recent years, in the field of continuous steel casting, there has been a strong desire to develop technologies for manufacturing wide thin slabs, and as shown in Figure 2, (a) twin roll method, (b) drum and belt method, (c) Continuous casting methods using moving molds, such as the twin-belt method, have been proposed. In Fig. 2, 21 is a tundish, 2
2 is an injection nozzle, 23 is a sump, 24 is a rotating roll, 25 is a moving belt, and 26 is a slab. In these casting methods, it is an important issue to stably maintain the surface quality and internal cleanliness of the slab at a high level.
すなわち、薄肉鋳片の場合は、鋳片から最終成
品までの圧延加工比が従来の厚手スラブからの圧
延の場合に較べて著しく小さいので、鋳片表面の
小さな欠陥も成品表面の欠陥として残りやすい。 In other words, in the case of thin slabs, the rolling ratio from the slab to the final product is significantly smaller than in the case of conventional rolling from thick slabs, so small defects on the surface of the slab are likely to remain as defects on the surface of the product. .
また鋳型内での溶鋼からの非金属介在物の分離
が行われ難いために、注入溶鋼の清浄度の良否が
成品内部の清浄度を直接的に左右することになり
やすい。 Furthermore, since it is difficult to separate nonmetallic inclusions from the molten steel in the mold, the cleanliness of the injected molten steel tends to directly affect the cleanliness inside the finished product.
このようなことから、広幅薄肉鋳片の連続鋳造
の場合は、清浄な溶鋼を乱れのない静かな流れと
して鋳型内の湯溜り部に注入するための特殊な注
入ノズルが要求される。従来このような要求に応
えるべく採用されたノズル構造として、たとえば
特開昭60−21156号公報や特開昭60−49839号公報
に記載の注入ノズルがある。 For this reason, in the case of continuous casting of wide, thin-walled slabs, a special injection nozzle is required to inject clean molten steel into the sump in the mold as a quiet, undisturbed stream. As nozzle structures conventionally adopted to meet such demands, there are, for example, injection nozzles described in Japanese Patent Application Laid-Open No. 60-21156 and Japanese Patent Application Laid-Open No. 60-49839.
前記特開昭60−21156号公報に記載の注入ノズ
ルは、双ロール法の場合の注入ノズルであり、タ
ンデイツシユ底部に直結した注入ノズルの内部を
中間室を介して上部通路と下部通路とに分割し、
上部通路を互いに並行な仕切壁で区分して整流通
路に構成し、下部通路においてこの通路を流下す
る湯の一部が流溜り部の短辺側固定壁の方向に向
けて吐出するように傾斜通路を設けたものであ
る。 The injection nozzle described in JP-A-60-21156 is an injection nozzle for the twin-roll method, and the inside of the injection nozzle, which is directly connected to the bottom of the tundish, is divided into an upper passage and a lower passage through an intermediate chamber. death,
The upper passage is divided by mutually parallel partition walls to form a rectifying passage, and the lower passage is inclined so that a part of the hot water flowing down this passage is discharged toward the fixed wall on the short side of the flow pool. It has a passageway.
そしてこのようなノズル構造とすることによ
り、整流化された溶湯が鋳片幅方向に均等に分配
されながら鋳型空間に供給され、鋳型表面に生成
する擬固シエルの形状が安定し、板厚が均一でラ
ミネーシヨンの無い薄板鋳片の鋳造ができるとさ
れている。 By adopting such a nozzle structure, the rectified molten metal is evenly distributed in the slab width direction and supplied to the mold space, the shape of the pseudo-solid shell generated on the mold surface is stabilized, and the plate thickness is reduced. It is said that it is possible to cast uniform thin plate slabs without lamination.
また、前記特開昭60−49839号公報に記載の注
入ノズルは、双ベルト法の場合の注入ノズルであ
り、鋳型幅全幅寸法のノズルで、このノズルのス
リツト状のノズル孔部に棧を設けたものであり、
注入時には鋳型内溶湯の自由表面を該ノズル根元
部に続くタンデイツシユ内に維持しつつ給湯を続
けるようにしたものである。そしてこのようなノ
ズル構造とすることにより、鋳片表面肌を劣化さ
せることなく、また湯面の酸化やタンデイツシユ
からの捲き込みによる非金属介存物の混入を最小
限に抑制でき、かつノズル詰まり等の溶湯供給不
良を起こす懸念なく円滑な作業が確保できるとさ
れている。 Furthermore, the injection nozzle described in the above-mentioned Japanese Patent Application Laid-Open No. 60-49839 is an injection nozzle for the double belt method, and is a nozzle having the full width of the mold, and a slit-like nozzle hole of this nozzle is provided with a rod. It is
During pouring, the free surface of the molten metal in the mold is maintained within the tundish following the nozzle root while continuing to supply the molten metal. By adopting such a nozzle structure, it is possible to minimize the incorporation of non-metallic inclusions due to oxidation of the molten metal surface and rolling in from the tundish without deteriorating the surface skin of the slab, and prevent nozzle clogging. It is said that smooth work can be ensured without fear of molten metal supply failure.
（発明が解決しようとする問題点）
しかしながら、前記従来の構造の注入ノズルで
は、ノズル本体がタンデイツシユに直結している
ので、タンデイツユからの吐出流が湯溜り部への
吐出流の方向性や乱れに強く影響することは避け
難く、ノズル内の整流の程度も注湯速度に左右さ
れ、また溶湯の清浄度に関してもたんにタンデイ
ツシユや湯溜り部の湯面のスラグ，ノロの巻込み
が防止できるだけであつて、溶湯中の介在物を除
去するという機能はないので、清浄度を積極的に
向上させるという効果はない。(Problems to be Solved by the Invention) However, in the injection nozzle having the conventional structure, the nozzle body is directly connected to the tundish, so the discharge flow from the tundish is affected by the directionality and turbulence of the discharge flow toward the tundish. The degree of rectification in the nozzle also depends on the pouring speed, and regarding the cleanliness of the molten metal, it is easy to prevent the entrainment of slag and slag on the surface of the tundish and pool. However, since it does not have the function of removing inclusions in the molten metal, it does not have the effect of actively improving the cleanliness.
（問題点を解決するための手段）
本発明は上記に鑑み、広幅ノズルの全幅にわた
つて乱れのない静かな吐出流を得るとともに、溶
湯中の介在物の除去を可能にする広幅薄肉鋳片の
連続鋳造用注入ノズルを提供することを目的とす
る。(Means for Solving the Problems) In view of the above, the present invention provides a wide thin-walled cast slab that enables a quiet discharge flow without turbulence over the entire width of a wide nozzle and also enables the removal of inclusions in the molten metal. The purpose of the present invention is to provide an injection nozzle for continuous casting.
この目的を達成するための本発明の注入ノズル
は、回転ロールや移動ヘルトなどを組合せた移動
鋳型による広幅薄肉鋳片の連続鋳造用注入ノズル
において、タンデイツシユから移動鋳型内に溶湯
を注入するノズルを、耐火物製フイルターを内蔵
しスリツト状の吐出口を有するノズル本体と該ノ
ズル本体内に溶湯を供給する中間ノズルとで構成
するとともに、ノズル本体に通電加熱用電極を装
着したことを特徴とする広幅薄肉鋳片を連続鋳造
用注入ノズルである。 To achieve this objective, the injection nozzle of the present invention is an injection nozzle for continuous casting of wide thin slabs using a moving mold that combines rotating rolls and moving helts, and is a nozzle that injects molten metal from a tundish into a moving mold. , consisting of a nozzle body having a built-in refractory filter and a slit-shaped discharge port, and an intermediate nozzle for supplying molten metal into the nozzle body, and characterized in that the nozzle body is equipped with an electrode for energizing heating. This is an injection nozzle for continuous casting of wide thin slabs.
（作 用）
本発明になる注入ノズルは上記のような構造で
あるので、タンデイツシユから供給される溶湯の
吐出流の動エネルギーは中間ノズルからノズル本
体内に供給されたときにその動エネルギーの一部
が吸収緩和され、ノズル本体に内装されたフイル
ターの入側と出側の間の圧力差によつてノズル本
体内に溶湯が充満してノズル全幅にわたつて溶湯
が均一にかつ静かな流れとなり、また溶湯がフイ
ルターを通過するときに介在物が除去されて溶湯
の清浄化がはかれる。さらにノズル本体を通電加
熱することにより、内装フイルターおよびノズル
吐出口の詰まりを防止することができる。(Function) Since the injection nozzle according to the present invention has the above-described structure, the kinetic energy of the discharge flow of the molten metal supplied from the tundish is equal to that of the kinetic energy when the molten metal is supplied from the intermediate nozzle into the nozzle body. The pressure difference between the inlet and outlet sides of the filter built into the nozzle body fills the nozzle body with molten metal, which causes the molten metal to flow uniformly and quietly over the entire width of the nozzle. Also, when the molten metal passes through the filter, inclusions are removed and the molten metal is cleaned. Furthermore, by heating the nozzle body with electricity, clogging of the internal filter and the nozzle outlet can be prevented.
（実施例）
以下本発明を実施例にもとづき詳しく説明す
る。第１図は本発明の実施例におけるノズル構造
を示すａ正面図（一部切欠き図）およびｂ側面図
（一部切欠き図）である。図に示すように本実施
例の注入ノズルは、耐火物製のフイルター１１と
スリツト状の吐出口１５とを有するノズル本体１
と、該ノズル本体１内に溶湯を供給する中間ノズ
ル２とから構成されている。ノズル本体１は第２
図に示した従来型のノズルとは違つてタンデイツ
シユに直結したものではなく、タンデイツシユか
らの溶湯供給は中間ノズル２から行われる。中間
ノズル２は図示していないタンデイツシユの底部
に、これも図示していないストツパー（ナンデイ
ツシユ吐出口の開閉機構）を介して取付けられて
いる。(Examples) The present invention will be described in detail below based on Examples. FIG. 1 is a front view (partially cutaway) and a side view (partially cutaway) showing a nozzle structure in an embodiment of the present invention. As shown in the figure, the injection nozzle of this embodiment has a nozzle body 1 having a refractory filter 11 and a slit-shaped discharge port 15.
and an intermediate nozzle 2 that supplies molten metal into the nozzle body 1. The nozzle body 1 is the second
Unlike the conventional nozzle shown in the figure, the nozzle is not directly connected to the tundish, but the molten metal is supplied from the tundish through an intermediate nozzle 2. The intermediate nozzle 2 is attached to the bottom of the tundish (not shown) via a stopper (opening/closing mechanism for the tundish outlet), also not shown.
中間ノズル２の材質，形状は特殊なものである
必要はなく、通常の連続鋳造において用いられる
浸漬型筒状ノズルに類似したものを用いることが
できる。ただし好しくは先端部の溶湯吐出口は、
ノズル本体１内の空間部１４の内周面に向けて開
口する構造とするのがよい。このようにすれば、
タンデイツシユから中間ノズル２内を通つて供給
される溶湯が、ノズル本体１内の空間部１４にそ
の動エネルギーを減少しつつ充満する。この場合
の中間ノズル２の吐出口の数，形状，開口面積等
はノズル本体１の形状や鋳造条件に応じて決定す
る。 The material and shape of the intermediate nozzle 2 do not need to be special, and may be similar to the immersion type cylindrical nozzle used in normal continuous casting. However, preferably the molten metal discharge port at the tip is
It is preferable to have a structure that opens toward the inner circumferential surface of the space 14 in the nozzle body 1. If you do this,
The molten metal supplied from the tundish through the intermediate nozzle 2 fills the space 14 in the nozzle body 1 while reducing its dynamic energy. In this case, the number, shape, opening area, etc. of the discharge ports of the intermediate nozzle 2 are determined depending on the shape of the nozzle body 1 and casting conditions.
ノズル本体１に内装するフイルター１１は、溶
湯湯が流通するだけの気孔を有する多孔質耐火物
製のもので、前記空間部１４に充満した溶湯はこ
のフイルター１１を通過して所謂ピストンフロー
となつて吐出口１５を通り湯溜り部に静かな製流
となつて注入される。本発明者等の実験によれ
ば、第１図に示した実施例ノズルで、フイルター
での圧損が0.1Kg／mm2以上あれば所要の整流効果
が得られることが確認された。フイルター自体の
構造は、全体を同質の一体構造としてもよく、ま
と気孔率の異なる複数の層により構成してもよ
い。複層にする場合は最も気孔の大きい層として
格子状あるいはパンチングボード状の耐火物を用
いることができ、また層間を空けて多段状とする
こともできる。 A filter 11 installed in the nozzle body 1 is made of a porous refractory material having pores large enough for the molten metal to flow through, and the molten metal filling the space 14 passes through the filter 11 and forms a so-called piston flow. The water passes through the discharge port 15 and is injected into the pool as a quiet stream. According to experiments conducted by the present inventors, it has been confirmed that the desired rectifying effect can be obtained with the example nozzle shown in FIG. 1 if the pressure loss in the filter is 0.1 Kg/mm 2 or more. The structure of the filter itself may be a homogeneous integral structure as a whole, or may be composed of a plurality of layers having different porosity. In the case of multiple layers, a lattice-like or punching board-like refractory can be used as the layer with the largest pores, and it is also possible to form a multi-layered structure with spaces between the layers.
ノズル本体１は第１図に示すように、上部に中
間ノズル２が挿入される孔を有し、下部は広幅ス
リツト状の吐出口１５となつていて、吐出口１５
の直上に前記フイルター１１が内装されている。
本発明の注入ノズルは使用にあたつて通電加熱を
行うものであるから、ノズル本体１の材質とて
は、導電性の耐火物、たとえば７ないし30％の黒
鉛を含むアルミナ耐火物を用いる。通電加熱用電
極１２は、ノズル本体１からの伝熱により内装フ
イルター１１を加熱するのに最も適したノズル外
面位置に緩衝材１３を介して水冷された銅合金電
極が装着されている。この電極１２に通電するこ
とによりノズル本体１が通電加熱され、内装フイ
ルター１１が間接的に1200℃程度以上に加熱され
て、注入初期に溶湯が凝固して目詰まりすること
が防止される。なお、より効率的な加熱を行うた
めにノズル本体１の断熱材による保温や高温ガス
による予熱などを併用することも効果がある。 As shown in FIG. 1, the nozzle body 1 has a hole in the upper part into which the intermediate nozzle 2 is inserted, and a wide slit-shaped discharge port 15 in the lower part.
The filter 11 is installed directly above the filter.
Since the injection nozzle of the present invention performs electrical heating during use, the material of the nozzle body 1 is a conductive refractory, for example, an alumina refractory containing 7 to 30% graphite. The energizing heating electrode 12 is a water-cooled copper alloy electrode attached via a buffer material 13 to a position on the outer surface of the nozzle most suitable for heating the internal filter 11 by heat transfer from the nozzle body 1. By energizing this electrode 12, the nozzle body 1 is electrically heated, and the internal filter 11 is indirectly heated to about 1200° C. or higher, thereby preventing the molten metal from solidifying and clogging at the initial stage of injection. In addition, in order to perform more efficient heating, it is also effective to use heat retention using a heat insulating material of the nozzle body 1, preheating using high-temperature gas, and the like.
（発明の効果）
本発明の注入ノズルは以上のような構造である
から、広幅薄肉鋳片の連続鋳造において、移動鋳
型内の湯溜り部に注入される溶湯の流れを広幅ノ
ズルの全幅にわたつて乱れのない静かな流れとし
て良好な鋳片表面性状を得、また溶湯の介在物を
除去して内部清浄度の高い鋳片を得ることができ
るという優れた効果がある。(Effects of the Invention) Since the injection nozzle of the present invention has the above structure, in continuous casting of wide thin slabs, the flow of molten metal injected into the sump in the moving mold can be spread over the entire width of the wide nozzle. This has the excellent effect of obtaining good surface properties of the slab as a quiet flow without any turbulence, and also being able to remove inclusions from the molten metal to obtain a slab with high internal cleanliness.
第１図ａおよびｂは本発明の実施例における注
入ノズルの構造を示す正面図および側面図であ
り、第２図ａ〜ｃは本発明が適用される広幅薄肉
鋳片を連続鋳造装置の例を示す概略構成図であ
る。
１……ノズル本体、２……中間ノズル、１１…
…フイルター、１２……電極、１３……緩衝材、
１４……空間部、１５……吐出口、２１……タン
デイツシユ、２２……ノズル、２３……湯溜り
部、２４……回転ロール、２５……移動ベルト、
２６……鋳片。
Figures 1a and 1b are front and side views showing the structure of an injection nozzle in an embodiment of the present invention, and Figures 2a to 2c are examples of continuous casting equipment for wide thin-walled slabs to which the present invention is applied. FIG. 1... Nozzle body, 2... Intermediate nozzle, 11...
... Filter, 12 ... Electrode, 13 ... Buffer material,
14... Space portion, 15... Discharge port, 21... Tundish, 22... Nozzle, 23... Water reservoir, 24... Rotating roll, 25... Moving belt,
26...Slab.
Claims (1)
鋳型による広幅薄肉鋳片の連続鋳造用注入ノズル
において、タンデイツシユから移動鋳型内に溶湯
を注入するノズルを、耐火物製フイルターを内蔵
しスリツト状の吐出口を有するノズル本体と該ノ
ズル本体内に溶湯を供給する中間ノズルとで構成
するとともに、ノズル本体に通電加熱用電極を装
着したことを特徴とする広幅薄肉鋳片の連続鋳造
用注入ノズル。1. In an injection nozzle for continuous casting of wide thin slabs using a moving mold that combines rotating rolls and moving belts, the nozzle for injecting molten metal into the moving mold from a tundish is a slit-shaped discharge port with a built-in refractory filter. An injection nozzle for continuous casting of wide, thin-walled slabs, comprising a nozzle body having a nozzle body and an intermediate nozzle for supplying molten metal into the nozzle body, the nozzle body being equipped with an electrode for energization and heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12358186A JPS62282753A (en) | 1986-05-30 | 1986-05-30 | Pouring nozzle for continuous casting of wide thin billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12358186A JPS62282753A (en) | 1986-05-30 | 1986-05-30 | Pouring nozzle for continuous casting of wide thin billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62282753A JPS62282753A (en) | 1987-12-08 |
| JPH0428462B2 true JPH0428462B2 (en) | 1992-05-14 |
Family
ID=14864131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12358186A Granted JPS62282753A (en) | 1986-05-30 | 1986-05-30 | Pouring nozzle for continuous casting of wide thin billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62282753A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3805071A1 (en) * | 1988-02-18 | 1989-08-31 | Didier Werke Ag | CLOSING AND CONTROL DEVICE FOR THE POURING OF LIQUID METAL MELT |
| JPH01228649A (en) * | 1988-03-07 | 1989-09-12 | Nippon Steel Corp | Nozzle for continuous casting for wide cast strip |
| US5178205A (en) * | 1990-07-13 | 1993-01-12 | Ishikawajima-Harima Heavy Industries Co. Limited | Strip casting method and apparatus |
| JPH04300050A (en) * | 1991-03-28 | 1992-10-23 | Nippon Steel Corp | Biroll type sheet casting method |
| JP4681375B2 (en) * | 2005-07-08 | 2011-05-11 | 新日本製鐵株式会社 | Amorphous ribbon manufacturing equipment |
| JP6569554B2 (en) * | 2016-02-10 | 2019-09-04 | 日本製鉄株式会社 | Thin-walled slab manufacturing method |
| CN112789126B (en) * | 2018-10-03 | 2023-03-31 | 日本制铁株式会社 | Method for manufacturing thin-wall cast plate |
| JP7230597B2 (en) * | 2019-03-11 | 2023-03-01 | 日本製鉄株式会社 | Pouring nozzle, twin roll type continuous casting apparatus, and method for producing thin cast slab |
-
1986
- 1986-05-30 JP JP12358186A patent/JPS62282753A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62282753A (en) | 1987-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |