JPH06304721A - Method for supplying wire into molten steel - Google Patents

Method for supplying wire into molten steel

Info

Publication number
JPH06304721A
JPH06304721A JP11922493A JP11922493A JPH06304721A JP H06304721 A JPH06304721 A JP H06304721A JP 11922493 A JP11922493 A JP 11922493A JP 11922493 A JP11922493 A JP 11922493A JP H06304721 A JPH06304721 A JP H06304721A
Authority
JP
Japan
Prior art keywords
wire
stopper
molten steel
hole
supplying
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.)
Withdrawn
Application number
JP11922493A
Other languages
Japanese (ja)
Inventor
Tomohiro Furuta
Hiroshi Harada
Toru Iwamoto
Akifumi Seze
Eiichi Takeuchi
Hitoshi Tanno
仁 丹野
寛 原田
智寛 古田
亨 岩本
昌文 瀬々
栄一 竹内
Original Assignee
Nippon Steel Corp
新日本製鐵株式会社
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 Nippon Steel Corp, 新日本製鐵株式会社 filed Critical Nippon Steel Corp
Priority to JP11922493A priority Critical patent/JPH06304721A/en
Publication of JPH06304721A publication Critical patent/JPH06304721A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the contamination of molten steel at the time of supplying a wire containing alloy element into the molten steel through a through-hole type stopper by making the through-hole in the stopper the argon gas atmosphere, passing the wire into the through-hole and supplying the wire into the molten steel. CONSTITUTION:For example, in the producing process of a low carbon aluminum killed steel, as the stopper for tundish, the stopper 2 for supplying the wire arranging gaseous argon blowing hole 9 at the upper part of a core metal 8 is used. While supplying the gaseous argon in a prescribed flow rate, the steel-containing wire 1 containing ferro-titanium is supplied from the upper part of the stopper 2. In such a way, the gaseous argon is blown into the through-hole 7 from the upper part of the stopper 2 forming the axial part as the through-hole 7, and by preventing the invasion of the air, the supply of the wire 1 can be executed without contaminating the molten steel.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、タンディッシュ(T
D)の貫通型ストッパーを介して合金元素を含むワイヤ
ーを溶鋼に供給する方法に関するものである。
The present invention relates to a tundish (T
The present invention relates to a method of supplying a wire containing an alloying element to molten steel via a penetration type stopper of D).

【0002】[0002]

【従来の技術】従来、溶鋼をTDから鋳型内に連続的に
供給する際に用いる流量調整用ストッパーの軸心部を貫
通孔とし、これをガイドとしてノズル内の溶鋼に合金元
素を含むワイヤーを添加することが試みられてきた。
2. Description of the Related Art Conventionally, a through hole is used as a shaft center of a flow rate adjusting stopper used when continuously supplying molten steel from a TD into a mold, and a wire containing an alloying element in the molten steel in a nozzle is used as a guide. Attempts have been made to add it.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、図3に
示すようなTDのストッパー2の軸心部を貫通孔7と
し、この貫通孔7を介して合金元素を含むワイヤー1を
溶鋼中に供給して合金添加を行うと、貫通孔7を通して
大気が溶鋼中に吸引され、溶鋼が大気中の窒素および酸
素に汚染されるという問題があった。すなわち、通常、
溶鋼3がストッパー2の先端周囲を流れているときは先
端部は負圧となるため、貫通孔7内部の大気はワイヤー
供給と同時に溶鋼中に吸引されるが、大気の成分は主に
窒素と酸素であり、これらが過剰に溶鋼中に含まれると
鋼の性質を損ねることが知られている。
However, the axial center portion of the stopper 2 of the TD as shown in FIG. 3 is used as a through hole 7, and the wire 1 containing the alloy element is supplied into the molten steel through the through hole 7. When the alloy is added by the above method, the atmosphere is sucked into the molten steel through the through hole 7, and the molten steel is contaminated with nitrogen and oxygen in the atmosphere. That is, normally
When the molten steel 3 is flowing around the tip of the stopper 2, a negative pressure is applied to the tip, so that the atmosphere inside the through-hole 7 is sucked into the molten steel at the same time when the wire is supplied, but the atmospheric component is mainly nitrogen. Oxygen, which is known to impair the properties of steel when contained in excess in molten steel.

【0004】本発明は、このような貫通型ストッパーを
介して合金元素を含むワイヤーを溶鋼に供給する際の溶
鋼汚染を防止する方法を提供することを目的とする。
An object of the present invention is to provide a method for preventing contamination of molten steel when supplying a wire containing an alloying element to the molten steel through such a penetrating stopper.

【0005】[0005]

【課題を解決するための手段】本発明の要旨は、溶鋼か
ら鋳片を連続鋳造する際に、軸心部を貫通孔としたタン
ディッシュのストッパーを介して溶鋼に合金元素を含む
ワイヤーを供給するにあたって、該ストッパーの貫通孔
内をアルゴンガス雰囲気にし、そこに該ワイヤーを通し
て溶鋼へ供給することを特徴とする溶鋼へのワイヤー供
給方法である。
SUMMARY OF THE INVENTION The gist of the present invention is to supply a wire containing an alloying element to molten steel through a tundish stopper having a shaft center portion as a through hole when continuously casting a slab from molten steel. In doing so, a method for supplying a wire to molten steel is characterized in that the inside of the through hole of the stopper is made into an argon gas atmosphere and the wire is passed therethrough to supply the molten steel.

【0006】[0006]

【作用】本発明は軸心部を貫通孔としたストッパーの上
部より貫通孔内にアルゴンガスを吹込み、大気の浸入を
防止することで、溶鋼を汚染せずにワイヤー供給を可能
とする。
According to the present invention, the argon gas is blown into the through hole from the upper part of the stopper having the shaft center portion as the through hole to prevent the invasion of the atmosphere, so that the wire can be supplied without contaminating the molten steel.

【0007】[0007]

【実施例】低炭素アルミキルド鋼の製造過程で、タンデ
ィッシュ用のストッパーとして図1に示すように芯金8
の上部にアルゴンガス吹込み口9を設けたワイヤー供給
用のストッパー2を用い、1l/minの流量でアルゴ
ンガスを供給しながら、ストッパー2の上部よりフェロ
チタンを含有する外径7mmの鋼被覆ワイヤー1を供給
速度10m/minで供給した。
EXAMPLE As shown in FIG. 1, a core metal 8 was used as a tundish stopper in the manufacturing process of low carbon aluminum killed steel.
Using a stopper 2 for supplying a wire provided with an argon gas blowing port 9 on the upper part of the steel, a steel coating having an outer diameter of 7 mm containing ferro titanium from the upper part of the stopper 2 while supplying the argon gas at a flow rate of 1 l / min. The wire 1 was supplied at a supply speed of 10 m / min.

【0008】表1には、溶鋼中の窒素および酸素のピッ
クアップ量の一例を示す。本発明例では溶鋼中の窒素お
よび酸素のピックアップが抑えられていることがわか
る。また、添加したTiの鋳片内分布も均一な良好鋳片
が得られた。
Table 1 shows an example of pickup amounts of nitrogen and oxygen in molten steel. It can be seen that in the examples of the present invention, the pickup of nitrogen and oxygen in the molten steel is suppressed. Further, a good cast piece having a uniform distribution of the added Ti in the cast piece was obtained.

【0009】[0009]

【表1】 [Table 1]

【0010】なお、図2に示すようにガイドパイプ10
の送り口近くからアルゴンガスを吹込み、ストッパー2
内部をアルゴンガスで充填した場合も同様の結果が得ら
れた。
As shown in FIG. 2, the guide pipe 10
Argon gas is blown in from the vicinity of the feed port of stopper 2
Similar results were obtained when the interior was filled with argon gas.

【0011】[0011]

【発明の効果】本発明により大気中の窒素および酸素が
溶鋼中に吸引されるのを防止でき、操業品質面で安定し
た溶鋼内への合金添加用ワイヤーの供給が可能となる。
Industrial Applicability According to the present invention, it is possible to prevent nitrogen and oxygen in the atmosphere from being sucked into molten steel, and it is possible to stably supply the alloy addition wire into the molten steel in terms of operation quality.

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

【図1】本発明を実施するためのワイヤー供給用ストッ
パーの例を示す図である。
FIG. 1 is a view showing an example of a wire supply stopper for carrying out the present invention.

【図2】本発明を実施するためのワイヤー供給用ストッ
パーの他の例を示す図である。
FIG. 2 is a diagram showing another example of a wire supply stopper for carrying out the present invention.

【図3】従来のワイヤー供給用ストッパーの縦断面であ
る。
FIG. 3 is a vertical cross section of a conventional wire supplying stopper.

【符号の説明】[Explanation of symbols]

1 ワイヤー 2 ストッパー 3 溶鋼 4 タンディッシュ上ノズル 5 タンディッシュ 6 浸漬ノズル 7 貫通孔 8 芯金 9 アルゴンガス吹込み口 10 ガイドパイプ 1 Wire 2 Stopper 3 Molten Steel 4 Tundish Upper Nozzle 5 Tundish 6 Immersion Nozzle 7 Through Hole 8 Core Bar 9 Argon Gas Inlet 10 Guide Pipe

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成5年6月2日[Submission date] June 2, 1993

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0007[Correction target item name] 0007

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0007】[0007]

【実施例】低炭素アルミキルド鋼の製造過程で、タンデ
ィッシュ用のストッパーとして図1に示すように芯金8
の上部にアルゴンガス吹込み口9を設けたワイヤー供給
用のストッパー2を用い、1リットル/minの流量で
アルゴンガスを供給しながら、ストッパー2の上部より
フェロチタンを含有する外径7mmの鋼被覆ワイヤー1
を供給速度10m/minで供給した。
EXAMPLE As shown in FIG. 1, a core metal 8 was used as a tundish stopper in the manufacturing process of low carbon aluminum killed steel.
Using a stopper 2 for supplying a wire provided with an argon gas blowing port 9 on the upper part of the steel, while supplying argon gas at a flow rate of 1 liter / min, steel with an outer diameter of 7 mm containing ferro titanium from the upper part of the stopper 2 Coated wire 1
Was supplied at a supply speed of 10 m / min.

【手続補正2】[Procedure Amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0009[Correction target item name] 0009

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0009】[0009]

【表1】 [Table 1]

───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹内 栄一 千葉県富津市新富20−1 新日本製鐵株式 会社技術開発本部内 (72)発明者 丹野 仁 千葉県富津市新富20−1 新日本製鐵株式 会社技術開発本部内 (72)発明者 古田 智寛 北九州市戸畑区飛幡町1−1 新日本製鐵 株式会社八幡製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiichi Takeuchi 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Co., Ltd. Technology Development Division (72) Inventor Hitoshi Tanno 20-1 Shintomi, Futtsu-shi, Chiba Made by Shinnihon (72) Inventor Tomohiro Furuta 1-1 Tobahata-cho, Tobata-ku, Kitakyushu City Nippon Steel Corporation Yawata Works Co., Ltd.

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 溶鋼から鋳片を連続鋳造する際に、軸心
    部を貫通孔としたタンディッシュのストッパーを介して
    溶鋼に合金元素を含むワイヤーを供給するにあたって、
    該ストッパーの貫通孔内をアルゴンガス雰囲気にし、そ
    こに該ワイヤーを通して溶鋼へ供給することを特徴とす
    る溶鋼へのワイヤー供給方法。
    1. When supplying a wire containing an alloying element to molten steel through a tundish stopper having a through hole at its axial center when continuously casting a cast piece from the molten steel,
    A method for supplying a wire to molten steel, characterized in that the through hole of the stopper is filled with an argon gas atmosphere, and the wire is passed through the argon gas atmosphere.
JP11922493A 1993-04-23 1993-04-23 Method for supplying wire into molten steel Withdrawn JPH06304721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11922493A JPH06304721A (en) 1993-04-23 1993-04-23 Method for supplying wire into molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11922493A JPH06304721A (en) 1993-04-23 1993-04-23 Method for supplying wire into molten steel

Publications (1)

Publication Number Publication Date
JPH06304721A true JPH06304721A (en) 1994-11-01

Family

ID=14756034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11922493A Withdrawn JPH06304721A (en) 1993-04-23 1993-04-23 Method for supplying wire into molten steel

Country Status (1)

Country Link
JP (1) JPH06304721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013512782A (en) * 2009-12-08 2013-04-18 スウェレア・メフオス・アクチエボラーグ Arrangement to control the flow from the tundish

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013512782A (en) * 2009-12-08 2013-04-18 スウェレア・メフオス・アクチエボラーグ Arrangement to control the flow from the tundish

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20000704