JPH04100662A - Method for flowing out molten metal in molten metal vessel - Google Patents
Method for flowing out molten metal in molten metal vesselInfo
- Publication number
- JPH04100662A JPH04100662A JP21953890A JP21953890A JPH04100662A JP H04100662 A JPH04100662 A JP H04100662A JP 21953890 A JP21953890 A JP 21953890A JP 21953890 A JP21953890 A JP 21953890A JP H04100662 A JPH04100662 A JP H04100662A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- flowing
- inert gas
- nozzle
- bubbles
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 6
- 239000011261 inert gas Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims 1
- 239000011449 brick Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 8
- 239000002893 slag Substances 0.000 abstract description 8
- 238000007664 blowing Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 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
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、製鉄分野の溶融金属容器の溶湯流出方法に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for draining molten metal from a molten metal container in the field of iron manufacturing.
従来の技術
タンディツシュに装着したノズルから不活性ガスをノズ
ル内を流通する溶鋼中に吹き出すことは、よく知られて
いる。BACKGROUND OF THE INVENTION It is well known to blow inert gas from a nozzle attached to a tundish into molten steel flowing through the nozzle.
これは、主として浸漬ノズルの内壁に鋼中介在物である
アルミナが付着して、浸漬ノズルを閉塞するのを防止す
ることを目的としている。The main purpose of this is to prevent alumina, which is an inclusion in steel, from adhering to the inner wall of the immersion nozzle and clogging the immersion nozzle.
発明が解決しようとする課題
しかし従来では、鋼中介在物やスラグがモールドへ混入
するのを有効に防止することができず、鋼中介在物やス
ラグがモールドへ混入するのを防止して、鋼材の品質を
向上したり、歩留りを向上することが望まれていた。Problems to be Solved by the Invention However, in the past, it has not been possible to effectively prevent inclusions in steel and slag from entering the mold. It was desired to improve the quality of steel materials and increase yield.
課題を解決するための手段
本発明は上記のような点に鑑みたもので、上記の課題を
解決するために、タンディツシュからモールド等へのよ
うに溶融金属容器間に溶湯を流出する溶融金属容器の溶
湯流出方法において、溶湯を流出する溶融金属容器の流
出ノズルの上面部の周囲から不活性ガスを上方に吹き出
し、溶湯を流出ノズルに流し込んで他の溶融金属容器へ
流出することを特徴とする溶融金属容器の溶湯流出方法
を提供するにある。Means for Solving the Problems The present invention was made in view of the above points, and in order to solve the above problems, a molten metal container is provided in which molten metal flows between the molten metal containers, such as from a tundish to a mold. The molten metal outflow method is characterized by blowing an inert gas upward from around the upper surface of an outflow nozzle of a molten metal container from which the molten metal is flowing out, and causing the molten metal to flow into the outflow nozzle and flow out to another molten metal container. The present invention provides a method for draining molten metal from a molten metal container.
作用
本発明によれば、溶湯を流出する流出ノズルの上面部の
周囲から吹き出す不活性ガスによって、流出ノズルの上
部に不活性ガスの気泡がカーテン状となり、鋼中介在物
や溶湯表面のスラグが溶湯の流出ノズルに流れ込んで溶
湯に混入するのを防止できる。According to the present invention, the inert gas blown out from around the upper surface of the outflow nozzle through which the molten metal flows out forms a curtain of inert gas bubbles at the top of the outflow nozzle, thereby removing inclusions in the steel and slag on the surface of the molten metal. This can prevent the molten metal from flowing into the outflow nozzle and mixing with the molten metal.
実施例 以下、本発明を実施例にもとづいて説明する。Example Hereinafter, the present invention will be explained based on examples.
第１図、第２図は、本発明のタンディツシュに実施した
一実施例である。FIGS. 1 and 2 show an embodiment of the tundish of the present invention.
タンディツシュ（１）の溶融金属容器の底部の羽口部（
２）には、第１図のようにボルダ形状の受は口とした浸
漬ノズルの流出ノズル（３）を取り付け、この流出ノズ
ル（３）の下部をモールド（４）の溶融金属容器に挿入
してタンディツシュ（１）からモールド（４）へ溶湯を
流出するようにしている。The tuyere part (
In step 2), attach the outflow nozzle (3) of a submerged nozzle with a boulder-shaped receiver as shown in Figure 1, and insert the lower part of this outflow nozzle (3) into the molten metal container of the mold (4). The molten metal flows out from the tundish (1) to the mold (4).
上記羽口部（２）は、第１図、第２回のように上面を除
いて周囲を鉄皮（５）やモルタル（６）で囲み、内部に
多孔質れんが（７）を装填して形成している。そして、
多孔質れんが（７）の内部に円環状のガスブール部（８
）を配設し、このガスプール部（８）にガス供給管（９
）を接続して、流出ノズル（３）の上面部の周囲の多孔
質れんが（７）の上面からアルゴンガスや窒素ガス等の
不活性ガスの気泡を均−状に上方へ吹き出せるようにし
ている。多孔質れんが（７）の幅や不活性ガスの供給量
は、羽口部（２）の上部に所要の気泡のカーテンができ
るように適宜に採択できるものである。００）はストッ
パーノズルである。As shown in Figure 1 and Part 2, the tuyere part (2) is surrounded by iron skin (5) and mortar (6) except for the upper surface, and porous bricks (7) are loaded inside. is forming. and,
There is an annular gas boule part (8) inside the porous brick (7).
), and a gas supply pipe (9) is installed in this gas pool part (8).
) so that bubbles of inert gas such as argon gas or nitrogen gas can be evenly blown upward from the top surface of the porous brick (7) around the top surface of the outflow nozzle (3). There is. The width of the porous brick (7) and the amount of inert gas supplied can be selected as appropriate so as to form the desired curtain of bubbles above the tuyere (2). 00) is a stopper nozzle.
しかして、第１図のようにガス供給管（９）から不活性
ガスを供給すると、流出ノズル（３）の周囲の羽口部（
２）の多孔質れんが（７）の上面から不活性ガスが噴出
し、ストンバーノズルＧＯ）のまわりに円筒状に不活性
ガスの気泡のカーテンができる。Therefore, when inert gas is supplied from the gas supply pipe (9) as shown in Fig. 1, the tuyeres around the outflow nozzle (3) (
Inert gas blows out from the top surface of the porous brick (7) in 2), forming a cylindrical curtain of inert gas bubbles around the stone bar nozzle GO).
そのため、溶湯がタンディツシュ（１）から流出ノズル
（３）に流れ込む際に、溶湯中の介在物やスラグが溶湯
流れにそって流出ノズル（３）へ混入するのを気泡のカ
ーテンで防止でき、介在物やスラグがモールド（４）へ
流出するのを防止したり、半減することができる。Therefore, when the molten metal flows from the tundish (1) to the outflow nozzle (3), the bubble curtain can prevent inclusions and slag in the molten metal from entering the outflow nozzle (3) along the flow of the molten metal. It is possible to prevent objects and slag from flowing into the mold (4) or reduce the amount by half.
なお、水モデル実験で浸漬ノズルの流出ノズルの上面部
の周囲から気泡を噴出してトレーサーであるポリエチレ
ン粒の動きを調べた結果、トレサーが流出ノズルに流出
して巻き込まれる量がほとんど無くなることを確認する
ことができた。このことからも、上記した流出ノズルの
上面部の周囲から不活性ガスの吹き出しが有効であるこ
とを裏付けすることができる。In addition, as a result of water model experiments in which air bubbles were ejected from around the top of the outflow nozzle of a submerged nozzle and the movement of the polyethylene particles, which are tracers, was investigated, it was found that the amount of tracer flowing out into the outflow nozzle and being entangled was almost eliminated. I was able to confirm. This also proves that blowing out the inert gas from around the upper surface of the above-described outflow nozzle is effective.
上記実施例では、羽口部を多孔質れんがで形成したが、
溶融金属精錬用のガス吹き込みプラグのようにれんが中
にパイプを埋設したり、スリットを設けたりして不活性
ガスを噴出するようにもできる。In the above example, the tuyeres were made of porous bricks, but
It is also possible to blow out inert gas by burying a pipe in the brick or by providing a slit, like a gas blowing plug for molten metal refining.
また、流出ノズルの上面部の周囲からの不活性ガスの吹
き出しを上記のように一重とするほか、必要により二重
状等の多重に行うこともでき、またさらに流出ノズルの
上面から吹き出すようにすることもできる。In addition to blowing out the inert gas from around the top surface of the outflow nozzle in a single manner as described above, it is also possible to blow out the inert gas multiple times, such as in a double form, if necessary. You can also.
なお、実施例では、タンディツシュの溶融金属容器につ
いて説明したが、取鍋、その他の溶融金属容器について
も同様に適用することができる。In addition, in the embodiment, the molten metal container of a tundish was described, but the present invention can be similarly applied to a ladle or other molten metal container.
発明の効果
以上のように本発明にあっては、溶融金属容器から他の
溶融金属容器に溶湯を流出する際に、流出する流出ノズ
ルの上面部の周囲から不活性ガスを上方に向けて吹き出
すので、不活性ガスの気泡がカーテン状となって溶湯中
の介在物やスラグが流出ノズルに流れ込んで混入するの
を防止したり、半減化することができ、従来の限界を打
ち破って鋼材の品質の向上や歩留りの向上がはかれる。Effects of the Invention As described above, in the present invention, when molten metal flows out from a molten metal container to another molten metal container, inert gas is blown upward from around the upper surface of the outflow nozzle. As a result, the inert gas bubbles form a curtain shape that prevents inclusions and slag in the molten metal from flowing into the outflow nozzle and halving them. It is possible to improve the production efficiency and yield.
第１図は本発明の一実施例の説明用断面図、第２図は同
上の羽口部の拡大側断面図である。
１・・・タンディツシュ（溶融金属容器）、２・・・羽
口部、３・・・流出ノズル、４・・・モールド（溶融金
属容器）、７・・・多孔質れんが、９・・・ガス供給管
。
出願人 川崎炉材株式会社
川崎製鉄株式会社
代理人 弁理士 森 本 邦 章
滌FIG. 1 is an explanatory sectional view of one embodiment of the present invention, and FIG. 2 is an enlarged side sectional view of the same tuyere portion. DESCRIPTION OF SYMBOLS 1... Tandish (molten metal container), 2... Tuyere part, 3... Outflow nozzle, 4... Mold (molten metal container), 7... Porous brick, 9... Gas supply pipe. Applicant Kawasaki Rozai Co., Ltd. Kawasaki Steel Co., Ltd. Agent Patent attorney Akihiro Kuni Morimoto
Claims (1)
属容器間に溶湯を流出する溶融金属容器の溶湯流出方法
において、 溶湯を流出する溶融金属容器の流出ノズルの上面部の周
囲から不活性ガスを上方に吹き出し、溶湯を流出ノズル
に流し込んで他の溶融金属容器へ流出することを特徴と
する溶融金属容器の溶湯流出方法。(1) In a molten metal container discharge method in which molten metal is discharged between molten metal containers such as from a tundish to a mold, an inert gas is supplied from around the upper surface of the molten metal container discharge nozzle from which the molten metal is discharged. A method for discharging molten metal from a molten metal container, characterized in that the molten metal is blown upward, the molten metal is poured into an outflow nozzle, and the molten metal flows out into another molten metal container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21953890A JPH04100662A (en) | 1990-08-20 | 1990-08-20 | Method for flowing out molten metal in molten metal vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21953890A JPH04100662A (en) | 1990-08-20 | 1990-08-20 | Method for flowing out molten metal in molten metal vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04100662A true JPH04100662A (en) | 1992-04-02 |
Family
ID=16737061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21953890A Pending JPH04100662A (en) | 1990-08-20 | 1990-08-20 | Method for flowing out molten metal in molten metal vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04100662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997013599A1 (en) * | 1995-10-10 | 1997-04-17 | Vesuvius Crucible Company | Nozzle assembly having inert gas distributor |
| CN114040823A (en) * | 2019-09-26 | 2022-02-11 | 黑崎播磨株式会社 | Nozzle structure on tundish and continuous casting method |
-
1990
- 1990-08-20 JP JP21953890A patent/JPH04100662A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997013599A1 (en) * | 1995-10-10 | 1997-04-17 | Vesuvius Crucible Company | Nozzle assembly having inert gas distributor |
| US5723055A (en) * | 1995-10-10 | 1998-03-03 | Vesuvius Crucible Company | Nozzle assembly having inert gas distributor |
| CN114040823A (en) * | 2019-09-26 | 2022-02-11 | 黑崎播磨株式会社 | Nozzle structure on tundish and continuous casting method |
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