JP2596853Y2 - Tundish for induction heating - Google Patents
Tundish for induction heatingInfo
- Publication number
- JP2596853Y2 JP2596853Y2 JP1993026049U JP2604993U JP2596853Y2 JP 2596853 Y2 JP2596853 Y2 JP 2596853Y2 JP 1993026049 U JP1993026049 U JP 1993026049U JP 2604993 U JP2604993 U JP 2604993U JP 2596853 Y2 JP2596853 Y2 JP 2596853Y2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- induction heating
- chamber
- tundish
- hot water
- 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 - Lifetime
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は誘導加熱装置を備えた連
続鋳造用タンディッシュに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting tundish provided with an induction heating device.
【０００２】[0002]
【従来の技術】近年、鋼の製造において、生産性が高
く、しかも製造コストが安い等の理由から連続鋳造法が
広く採用されている。このような連続鋳造で、特に、条
材においては、長方形のタンディッシュに複数のモール
ド鋳込ノズルを設けたいわゆる多ストランド鋳造が行わ
れている。2. Description of the Related Art In recent years, in the production of steel, a continuous casting method has been widely adopted because of high productivity and low production cost. In such continuous casting, particularly in the case of strip materials, so-called multi-strand casting in which a plurality of mold casting nozzles are provided in a rectangular tundish is performed.
【０００３】連続鋳造用タンディッシュ内の溶鋼温度
は、鋳片品質に大きな影響を及ぼし、鋳造初期と末期と
では溶鋼温度に差が生じることから、タンディッシュ内
溶鋼温度の均一化を目的とした誘導加熱装用タンディッ
シュが採用されている。[0003] The temperature of molten steel in a tundish for continuous casting has a great effect on the quality of slabs, and there is a difference in the temperature of molten steel between the initial stage and the final stage of casting. A tundish for induction heating is used.
【０００４】例えば実開平３−１０６２４３号公報に
は、２つの出湯室間に誘導加熱せきを設け、この誘導加
熱せきの内部に、２つの出湯室間と受湯室とに連通させ
てＴ字状の溶湯通路を設け、また２つの出湯室および受
湯室と出湯室間に連通させてそれぞれ溶湯通路を設けた
連続鋳造用タンディッシュが提案されている。For example, in Japanese Utility Model Laid-Open Publication No. 3-106243, an induction heating boom is provided between two tapping chambers, and a T-shape is provided inside the induction heating boom so as to communicate between the two tapping chambers and the receiving chamber. There has been proposed a tundish for continuous casting in which a molten metal passage is provided, and two molten metal chambers and a molten metal passage are provided so as to be communicated between the receiving chamber and the molten metal chamber.
【０００５】このような構造によって出湯室に入る溶鋼
を加熱することができ、鋳造初期と末期との溶鋼温度の
温度差を無くし、製造される鋳片の品質の向上が図れ
る。[0005] With such a structure, the molten steel entering the tapping chamber can be heated, the temperature difference between the molten steel temperature at the beginning and the end of the casting can be eliminated, and the quality of the slab to be produced can be improved.
【０００６】[0006]
【考案が解決しようとする課題】しかしながら同公報に
記載された連続鋳造用タンディッシュは、出湯室が複数
に分かれており、また誘導加熱部と各出湯孔間に距離が
ある等の理由によって、各出湯鋼部で溶鋼の温度差が生
じ、これによって鋳片の品質むらや、凝固速度差によ
り、各注入孔からの鋳込み作業性が悪くなる等の問題が
生じる。However, the tundish for continuous casting described in the publication has a plurality of tapping chambers, and there is a distance between the induction heating section and each tapping hole. A difference in temperature of the molten steel occurs in each tapping steel portion, which causes problems such as uneven casting quality and a difference in solidification speed, which deteriorates workability of pouring from each injection hole.
【０００７】本考案の目的は、これら従来の誘導加熱タ
ンディッシュの欠点である鋳片品質の差異の解消と鋳込
み作業性の向上、及び、誘導加熱部の多数回使用を可能
とするものである。[0007] An object of the present invention is to eliminate the differences in slab quality and improve the casting workability, which are disadvantages of the conventional induction heating tundish, and to enable the induction heating section to be used many times. .
【０００８】[0008]
【課題を解決する手段】本考案は、受湯室と複数の出湯
孔を備えた出湯室の間に溶湯加熱用の誘導加熱部を備え
た誘導加熱用タンディッシュにおいて、前記受湯室と出
湯室と誘導加熱部とを直列状に配置し、前記誘導加熱部
に前記受湯室と出湯室とを接続するスリーブ状の溶湯通
路を設け、更に、前記出湯室に設けた複数の出湯孔を前
記溶湯通路の延長線上から直交し且つその溶湯通路から
の直送流を回避する位置に設けるとともに、前記出湯室
に設けた複数の出湯孔とこれに最も近い溶湯通路の出口
との、最大距離Ｌｍａｘと最小距離ＬｍｉｎをＬｍａｘ
／Ｌｍｉｎ≦１．３としたことを特徴とする。SUMMARY OF THE INVENTION The present invention is directed to an induction heating tundish having an induction heating section for heating molten metal between a hot water receiving chamber and a hot water chamber having a plurality of hot water holes. A chamber and an induction heating section are arranged in series, a sleeve-shaped molten metal passage connecting the hot water receiving chamber and the tapping chamber is provided in the induction heating section, and a plurality of tap holes provided in the tapping chamber are further provided. Perpendicular to the extension of the molten metal passage and from the molten metal passage
At a position to avoid direct flow of
Outlets and the exit of the closest molten metal passage
Is the maximum distance Lmax and the minimum distance Lmin of Lmax
/Lmin≦1.3 .
【０００９】ここで、溶湯通路と出湯室の底面との間に
２００ｍｍ以上の段差を設けることもできる。[0009] Here, it is also possible to provide a 200mm or more steps between the bottom surface of the soluble hot water passage and the supply chamber.
【００１０】[0010]
【作用】本考案においては出湯室に設けた複数の出湯孔
を溶湯通路の延長線上から直交した位置に設けたことに
より、溶湯通路から出湯孔への直送流が回避され、これ
によって出湯室内での溶湯内の介在物の分離浮上効果を
高めることができる。In the present invention, the plurality of tap holes provided in the tapping chamber are provided at positions orthogonal to the extension line of the molten metal passage, so that a direct flow from the molten metal passage to the tap hole is avoided. The effect of separating and floating inclusions in the molten metal can be enhanced.
【００１１】また、複数の出湯孔とこれに最も近い溶湯
通路の出口との、最大距離Ｌmax と最小距離Ｌmin を、
Ｌmax ／Ｌmin ≦１．３以内とすることによって、溶鋼
の温度差を鋳片の品位に殆ど影響を与えない３℃以内に
押さえることができる。The maximum distance Lmax and the minimum distance Lmin between the plurality of tap holes and the outlet of the nearest molten metal passage are defined by:
By setting L max / L min ≦ 1.3 or less, the temperature difference of the molten steel can be suppressed within 3 ° C. that hardly affects the quality of the slab.
【００１２】さらに、溶湯通路と出湯室の底面との間に
２００ｍｍ以上の段差を設けることにより、出湯室内に
流入した溶鋼が攪拌され、さらに溶湯内の介在物の分離
浮上効果を高めることができる。Further, by providing a step of 200 mm or more between the molten metal passage and the bottom surface of the molten metal room, the molten steel flowing into the molten metal room is stirred, and the effect of separating and floating inclusions in the molten metal can be enhanced. .
【００１３】[0013]
【実施例】以下図面に示す実施例に基づいて本考案の特
徴を具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the embodiments shown in the drawings.
【００１４】図１は本考案の誘導加熱用タンディッシュ
の一実施例を示す平面図、図２は図１のＡ−Ａ線断面図
である。FIG. 1 is a plan view showing an embodiment of the tundish for induction heating according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.
【００１５】１は取鍋から溶鋼を受ける受湯室、２はタ
ンディッシュ内の溶鋼温度の均一化するための誘導加熱
コイル２ａを備えた誘導加熱部、３は誘導加熱部２の下
流側に設けられた出湯室であり、これらの受湯室１、誘
導加熱部２及び出湯室３は直列状に配置されている。1 is a hot water receiving chamber for receiving molten steel from a ladle, 2 is an induction heating section provided with an induction heating coil 2a for equalizing the temperature of molten steel in a tundish, and 3 is a downstream side of the induction heating section 2. The hot-water supply room is provided, and the hot-water receiving room 1, the induction heating unit 2, and the hot-water supply room 3 are arranged in series.
【００１６】図２の断面図に示すように、受湯室１の底
面は下流側に向かって傾斜しており、誘導加熱部２の下
部には同じ勾配で傾斜したスリーブ状の溶湯通路２ｂが
２本形成され、溶湯通路２ｂ出口底面と出湯室３の底面
との間には２００ｍｍの段差Ｈを設けている。As shown in the cross-sectional view of FIG. 2, the bottom surface of the hot water receiving chamber 1 is inclined toward the downstream side, and a sleeve-like molten metal passage 2b inclined at the same inclination is provided below the induction heating section 2. Two 200 mm steps H are formed between the bottom surface of the outlet of the molten metal passage 2 b and the bottom surface of the tapping chamber 3.
【００１７】出湯室３の底面にはそれぞれ等間隔で３箇
所の出湯孔３ａ，３ｂ，３ｃが設けられており、これら
は、全て溶湯通路２ｂの延長線上から直交した位置に設
けられている。また、これら出湯孔３ａ，３ｂ，３ｃに
最も近い溶湯通路２ｂの出口との距離Ｌ1 〜Ｌ4 は、最
大距離Ｌmax と最小距離Ｌmin を、Ｌmax ／Ｌmin ≦
１．３以内としている。また、溶湯通路２ｂと出湯室３
の底面との間に段差Ｈを設けている。Three tap holes 3a, 3b, 3c are provided at equal intervals on the bottom of the tapping chamber 3, all of which are provided at positions orthogonal to the extension of the molten metal passage 2b. The distance L 1 ~L 4 of tapping holes 3a, 3b, and the outlet nearest the molten metal passage 2b and 3c, the maximum distance L max and a minimum distance L min, L max / L min ≦
1.3 or less. In addition, the molten metal passage 2b and the tapping room 3
A step H is provided between the bottom and the bottom surface.
【００１８】上記構成において、受湯室１に供給された
溶鋼は、誘導加熱部２の溶湯通路２ｂ内を圧送され出湯
室３に入り込む、その際、３箇所の出湯孔３ａ，３ｂ，
３ｃが溶湯通路２ｂの延長線上から直交した位置で、か
つ溶湯通路２ｂから出湯孔への直送流（正面）を回避す
る位置に設ける。さらに溶湯通路２ｂと出湯室３の底面
との間に段差Ｈを設けていることから、出湯室内に流入
した溶鋼が撹拌され、出湯室３内での介在物の分離浮上
効果を高めることができる。In the above configuration, the molten steel supplied to the hot water receiving chamber 1 is pressure-fed through the molten metal passage 2b of the induction heating section 2 and enters the hot water chamber 3, in which three tap holes 3a, 3b, 3 are provided.
3c is at a position orthogonal to the extension of the molten metal passage 2b ,
Avoid direct flow (front) from the molten metal passage 2b to the tap hole
At a position where Further, since the step H is provided between the molten metal passage 2b and the bottom surface of the molten metal room 3, the molten steel flowing into the molten metal room is agitated, and the effect of separating and floating inclusions in the molten metal room 3 can be enhanced. .
【００１９】また、複数の出湯孔とこれに最も近い溶湯
通路の出口との、最大距離Ｌmax と最小距離Ｌmin をＬ
max ／Ｌmin ≦１．３以内とすることによって、溶鋼の
温度差を鋳片の品位に殆ど影響を与えない３℃以内に押
さえることができる。Further, the outlet of the plurality of tapping holes and nearest melt passage thereto, the maximum distance L max and a minimum distance L min L
By setting max / Lmin ≦ 1.3 or less, the temperature difference of the molten steel can be suppressed within 3 ° C. which hardly affects the quality of the slab.
【００２０】図１で示した誘導加熱装置を設置した最大
容量３０トンのタンディッシュを用い、受湯室１の溶鋼
温度を１５４５℃目標で、通電加熱を逐次実施しながら
３４０トンの溶鋼を鋳造したところ、各出湯口３ａ，３
ｂ，３ｃから出た溶鋼温度の温度差は、２〜３℃で良好
であった。Using a tundish equipped with the induction heating device shown in FIG. 1 and having a maximum capacity of 30 tons, the molten steel temperature of the receiving chamber 1 was set at 1545 ° C., and 340 tons of molten steel was cast while energizing heating was sequentially performed. After doing, each outlet 3a, 3
The temperature difference between the molten steel temperatures from b and 3c was good at 2-3 ° C.
【００２１】また、図１で示した誘導加熱装置を設置し
た最大容量３０トンのタンディッシュを用い、出湯孔の
個数、複数の出湯孔とこれに最も近い溶湯通路の出口と
の距離Ｌx 、溶湯通路２ｂ出口底面と出湯室３の底面と
の段差Ｈを溶湯通路の設置位置を変えることによってそ
れぞれ変化させ、注入室の溶鋼温度を１５４０〜１５５
０℃目標で鋳造を行った。Further, using the maximum capacitor 30 tons tundish induction heating device is installed as shown in FIG. 1, the number of tapping holes, the distance between the outlet of the plurality of tapping holes and nearest melt passage to L x, The steps H between the bottom of the molten metal passage 2b and the bottom of the tapping chamber 3 are respectively changed by changing the installation position of the molten metal passage, and the temperature of the molten steel in the injection chamber is set to 1540 to 155.
Casting was performed with a target of 0 ° C.
【００２２】表１はその結果を示す。Table 1 shows the results.
【００２３】[0023]
【表１】 結果は、実施例ではいずれも操業異常、製品品質異常は
なかったが、Ｌnax ／Ｌmin が１．３以下、Ｈが２００
ｍｍ以下が最も良好で安定した製品を得ることができ
た。[Table 1] As a result, although there was no operation abnormality and product quality abnormality in any of the examples, L nax / L min was 1.3 or less and H was 200.
mm or less, the most favorable and stable product could be obtained.
【００２４】また、比較例として、Ｌnax ／Ｌmin を
１．５、Ｈを２５０ｍｍとして鋳造したところ、温度
差、介在物指数が共に悪い方向に増加し、鋳造作業性も
各ストランド毎で鋳込み速度に差が生じ不安定であっ
た。As a comparative example, when casting was performed with L nax / L min of 1.5 and H of 250 mm, both the temperature difference and the inclusion index increased in a bad direction, and the casting workability was also improved for each strand. The speed was different and unstable.
【００２５】[0025]
【考案の効果】本考案によって以下の効果を奏すること
ができる。[Effects of the Invention] The present invention has the following effects.
【００２６】（１）出湯室の出湯孔から出る溶湯の温度
を均一化することにより、誘導加熱用タンディッシュに
おける鋳片品質の差を解消することができる。(1) By making the temperature of the molten metal flowing out of the tap hole of the tapping chamber uniform, it is possible to eliminate the difference in cast slab quality in the induction heating tundish.
【００２７】（２）同様の理由によって、鋳込み速度を
各モールドで変える必要がなくなり、各出湯孔からの溶
鋼鋳込作業性が向上する。(2) For the same reason, it is not necessary to change the casting speed in each mold, and the workability of casting molten steel from each tap hole is improved.
【００２８】（３）溶湯通路出口底面と出湯室底面に段
差を設け、鋳込み終了時の出湯室側残留物が溶湯通路内
に繋がって残ることがないことから、誘導加熱部の溶湯
通路の多数回使用が可能となる。(3) A step is provided between the bottom surface of the molten metal passage and the bottom surface of the molten metal room, and since the residue on the molten metal room side at the end of casting does not remain connected to the molten metal passage, a large number of molten metal passages of the induction heating section are provided. It can be used twice.
【図１】本考案の誘導加熱用タンディッシュの一実施例
を示す平面図である。FIG. 1 is a plan view showing an embodiment of an induction heating tundish of the present invention.
【図２】図１に示す誘導加熱用タンディッシュのＡ−Ａ
線断面図である。FIG. 2 is a sectional view of the induction heating tundish shown in FIG.
It is a line sectional view.
１ 受湯室 ２ 誘導加熱部 ２ａ 誘導加熱コイル ２ｂ 溶湯通路 ３ 出湯室 ３ａ〜３ｃ 出湯孔 Ｈ 段差 Ｌ 出湯孔と溶湯通路出口間の距離 DESCRIPTION OF SYMBOLS 1 Hot-water receiving room 2 Induction heating part 2a Induction heating coil 2b Melt passage 3 Hot-water room 3a-3c Hot-water hole H Step L Distance between the hot-water hole and hot-water passage outlet
───────────────────────────────────────────────────── フロントページの続き (72)考案者 三浦 龍介 福岡県北九州市戸畑区飛幡町１番１号 新日本製鐵株式会社 八幡製鐵所内 (72)考案者 西原 良治 福岡県北九州市戸畑区飛幡町１番１号 新日本製鐵株式会社 八幡製鐵所内 (72)考案者 土田 宗弘 福岡県北九州市戸畑区飛幡町１番１号 新日本製鐵株式会社 八幡製鐵所内 (56)参考文献 特開 平４−55045（ＪＰ，Ａ) 特開 平４−224060（ＪＰ，Ａ) 特開 平５−104212（ＪＰ，Ａ) 特開 平４−224059（ＪＰ，Ａ) 実開 昭60−71461（ＪＰ，Ｕ) 実開 平４−12352（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B22D 11/00 - 11/22 B22D 41/01 - 41/015 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Ryusuke Miura 1-1, Hibata-cho, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Yawata Works (72) Ryoharu Nishihara Tobihata, Tobata-ku, Kitakyushu-shi, Fukuoka No. 1-1, Nippon Steel Corporation Yawata Works (72) Inventor Munehiro Tsuchita 1-1, Tobata-cho, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Yawata Works (56) References Special JP-A-4-55045 (JP, A) JP-A-4-224060 (JP, A) JP-A-5-104212 (JP, A) JP-A-4-224059 (JP, A) JP, U) Japanese Utility Model 4-12352 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) B22D 11/00-11/22 B22D 41/01-41/015
Claims (2)
間に溶湯加熱用の誘導加熱部を備えた誘導加熱用タンデ
ィッシュにおいて、前記受湯室と出湯室と誘導加熱部と
を直列状に配置し、前記誘導加熱部に前記受湯室と出湯
室とを接続するスリーブ状の溶湯通路を設け、更に、前
記出湯室に設けた複数の出湯孔を前記溶湯通路の延長線
上から直交し且つその溶湯通路からの直送流を回避する
位置に設けるとともに、前記出湯室に設けた複数の出湯
孔とこれに最も近い溶湯通路の出口との、最大距離Ｌｍ
ａｘと最小距離ＬｍｉｎをＬｍａｘ／Ｌｍｉｎ≦１．３
としたことを特徴とする誘導加熱用タンディッシュ。1. An induction heating tundish having an induction heating section for heating molten metal between a hot water receiving chamber and a hot water chamber having a plurality of hot water holes, wherein the hot water receiving chamber, the hot water chamber, and the induction heating section are connected to each other. Are arranged in series, a sleeve-shaped molten metal passage is provided in the induction heating section for connecting the hot water receiving chamber and the molten metal tapping chamber, and a plurality of molten metal holes provided in the molten metal tapping chamber are arranged on an extension of the molten metal passage. To avoid direct flow from the melt passage
And a plurality of taps provided in the tap room
The maximum distance Lm between the hole and the outlet of the closest molten metal passage
amax and Lmin / Lmin ≦ 1.3.
A tundish for induction heating, characterized in that:
００ｍｍ以上の段差を設けたことを特徴とする請求項１
記載の誘導加熱用タンディッシュ。2. A space between the molten metal passage and the bottom of the tapping chamber.
2. A step having a height of not less than 00 mm.
The tundish for induction heating described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993026049U JP2596853Y2 (en) | 1993-05-19 | 1993-05-19 | Tundish for induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993026049U JP2596853Y2 (en) | 1993-05-19 | 1993-05-19 | Tundish for induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0686849U JPH0686849U (en) | 1994-12-20 |
| JP2596853Y2 true JP2596853Y2 (en) | 1999-06-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993026049U Expired - Lifetime JP2596853Y2 (en) | 1993-05-19 | 1993-05-19 | Tundish for induction heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596853Y2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6668568B2 (en) * | 2016-03-30 | 2020-03-18 | 株式会社神戸製鋼所 | Tundish for continuous casting and continuous casting method using the tundish |
| JP6668567B2 (en) * | 2016-03-30 | 2020-03-18 | 株式会社神戸製鋼所 | Tundish for continuous casting and continuous casting method using the tundish |
| JP6636842B2 (en) * | 2016-03-30 | 2020-01-29 | 株式会社神戸製鋼所 | Tundish for multi-strand continuous casting |
| JP6636841B2 (en) * | 2016-03-30 | 2020-01-29 | 株式会社神戸製鋼所 | Tundish for multi-strand continuous casting |
| JP6615033B2 (en) * | 2016-03-30 | 2019-12-04 | 株式会社神戸製鋼所 | Multi-strand continuous casting tundish |
| JP6672549B2 (en) * | 2016-08-31 | 2020-03-25 | 株式会社神戸製鋼所 | Tundish for continuous casting and continuous casting method using the tundish |
| JP7215361B2 (en) * | 2019-07-11 | 2023-01-31 | 日本製鉄株式会社 | Continuous casting method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071461U (en) * | 1983-10-21 | 1985-05-20 | 新日本製鐵株式会社 | Tundish for multi-strip casting |
| JP2546184Y2 (en) * | 1990-05-10 | 1997-08-27 | 住友重機械工業株式会社 | Tundish for multi-strand continuous casting machine |
| JPH084878B2 (en) * | 1990-06-22 | 1996-01-24 | 新日本製鐵株式会社 | Horizontal continuous casting method |
| JPH0749142B2 (en) * | 1990-12-26 | 1995-05-31 | 新日本製鐵株式会社 | Induction heating tundish |
| JPH04224060A (en) * | 1990-12-26 | 1992-08-13 | Nippon Steel Corp | Induction heating tundish for continuous casting |
| JPH05104212A (en) * | 1991-10-16 | 1993-04-27 | Sumitomo Metal Ind Ltd | Tundish with molten steel heating device |
-
1993
- 1993-05-19 JP JP1993026049U patent/JP2596853Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0686849U (en) | 1994-12-20 |
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