JPH01202360A - Ladle - Google Patents
LadleInfo
- Publication number
- JPH01202360A JPH01202360A JP2677388A JP2677388A JPH01202360A JP H01202360 A JPH01202360 A JP H01202360A JP 2677388 A JP2677388 A JP 2677388A JP 2677388 A JP2677388 A JP 2677388A JP H01202360 A JPH01202360 A JP H01202360A
- Authority
- JP
- Japan
- Prior art keywords
- ladle
- nozzle
- molten steel
- opening
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 46
- 239000010959 steel Substances 0.000 abstract description 46
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、精錬炉から出鋼した溶鋼を収容するための
取鍋に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ladle for storing molten steel tapped from a refining furnace.
例えば、転炉において精錬された溶鋼は、その出鋼口か
ら排出され、取鍋に収容される。そして、取鍋によって
連続鋳造工場または造塊工場まで移動し、連続鋳造機の
タンデイツシュまたは造塊工場の鋳型に取鍋内の溶鋼を
その底面に設けられた鋳込用ノズルを通して供給する。For example, molten steel refined in a converter is discharged from its tapping port and stored in a ladle. The ladle is then moved to a continuous casting factory or an ingot factory, and the molten steel in the ladle is supplied to the tundish of the continuous casting machine or the mold in the ingot factory through a casting nozzle provided at the bottom of the ladle.
このような取鍋の鋳込用ノズルの径は、通常容量１００
屯以下の取鍋では４０〜’７ｏ＋＋＊φ、１００〜２０
０屯では６０〜９０畷φ、さらに大型取鍋では１２０ｗ
φ程度である。The diameter of the casting nozzle for such a ladle is usually 100 ml.
40~'7o++＊φ, 100~20 for ladle below tun
60 to 90 mm diameter for 0 ton, and 120 w for large ladle.
It is about φ.
従って、鋳込用ノズルを通して排出される溶鋼の排出速
度は約１０ ｔ／ｍｉｎであり、例えば１００屯の溶鋼
を取鍋から全量を排出するためには１０〜２０分の時間
が必要である。Therefore, the discharge rate of molten steel discharged through the casting nozzle is about 10 t/min, and for example, it takes 10 to 20 minutes to discharge the entire amount of molten steel from a ladle of 100 tons.
この上うな取鍋内に収容された溶鋼を他の取鍋に分湯（
鍋移し）する場合がある。The molten steel contained in the upper ladle is divided into other ladle (
(transferred from one pot to another).
即ち、例えば小ロツト材を製造する場合には、精錬炉に
よって精錬された溶鋼を、−旦取鍋内に収容した後、当
該取鍋内の溶鋼を他の複数の取鍋に分湯し、分湯された
各取鍋内の溶鋼毎に成分調整を行なって小ロツト材を製
造する。That is, for example, when manufacturing small lot materials, molten steel refined in a smelting furnace is stored in a ladle, and then the molten steel in the ladle is divided into a plurality of other ladles, The components of the molten steel in each ladle are adjusted to produce small lots.
このような分湯作業は、溶鋼の温度低下防止のためにで
きる限シ迅速に行なうことを必要とするが、従来の取鍋
には、前述したように小径の鋳込用ノズルしか取り付け
られていないので、分湯に当っては、この鋳込用ノズル
を通して他の取鍋に溶鋼を排出せざるを得ない。This kind of diversion work needs to be done as quickly as possible in order to prevent the temperature of the molten steel from dropping, but as mentioned above, conventional ladles are only equipped with small diameter casting nozzles. Therefore, when dispensing molten steel, the molten steel must be discharged into another ladle through this casting nozzle.
このために、溶鋼の排出に長時間を必要とし、溶鋼の熱
ロスが大きく、従って、分湯された溶鋼を再加熱する必
要があり、これに要するエネルギーのロスが大きいとい
う問題があった。For this reason, it takes a long time to discharge the molten steel, and the heat loss of the molten steel is large.Therefore, it is necessary to reheat the separated molten steel, and there is a problem that the energy loss required for this is large.
しかも、前述した従来の取鍋の鋳込用ノズルは、第２図
に従来の取鍋の断面図に示すように、鋳込用ノズルマ内
に充填された溶鋼４の凝固防止用の砂６が、最初に取鍋
５から溶鋼４を排出するときに溶鋼４とともに流出する
。従って、次に取鍋５内に残った溶鋼４を排出するとき
に、鋳込用ノズル７内に浸入して凝固した地金によって
鋳込用ノズル７が閉塞する結果、鋳込用ノズル７からの
溶鋼４の排出ができなくなるという問題があった。Moreover, as shown in the cross-sectional view of the conventional ladle in FIG. , when the molten steel 4 is first discharged from the ladle 5, it flows out together with the molten steel 4. Therefore, when discharging the molten steel 4 remaining in the ladle 5 next, the casting nozzle 7 is blocked by the solidified metal that has entered the casting nozzle 7. There was a problem that the molten steel 4 could not be discharged.
７ａ はスライディングノズルのような、鋳込用ノズル
７の開閉機構である。7a is an opening/closing mechanism for the casting nozzle 7, such as a sliding nozzle.
一方、鋳込用ノズル７の径を大にすると次のような問題
が生じる。 −
（１） 流量コントロールができない。On the other hand, if the diameter of the casting nozzle 7 is increased, the following problems arise. - (1) Flow rate control is not possible.
（２）滓の巻き込み。(2) Entrainment of slag.
（３） スライディングノズルの寿命低下。(3) Reduction in the life of the sliding nozzle.
従ってこの発明の目的は、小ロツト材の製造の際に行な
われる取鍋からの分湯を短時間で、エネルギーロスが生
ずることなく行なうことができ、しかも、ノズル詰りを
おこすことのない、分湯兼用の取鍋を提供することにあ
る。Therefore, an object of the present invention is to enable the separation of hot water from a ladle during the production of small lot materials in a short time and without energy loss, and also to prevent nozzle clogging. The idea is to provide a ladle that can also be used for hot water.
この発明は、底面に開閉機構を有する鋳込用ノズルが取
り付けられた取鍋において、前記取鍋の底面に、前記鋳
込用ノズルとともに前記鋳込用ノズルよりも径の大きい
分湯用ノズルおよび前記分湯用ノズルの開閉機構が取り
付けられたことに特徴を有するものである。This invention provides a ladle equipped with a casting nozzle having an opening/closing mechanism on the bottom surface, and a dispensing nozzle having a larger diameter than the casting nozzle, which is attached to the bottom surface of the ladle together with the casting nozzle. It is characterized in that an opening/closing mechanism for the hot water distribution nozzle is attached.
次にこの発明を図面を参照しながら説明する。Next, the present invention will be explained with reference to the drawings.
第１図はこの発明の取鍋の一実施態様を示す断面図であ
る。FIG. 1 is a sectional view showing one embodiment of the ladle of the present invention.
第１図に示すように、この発明の取鍋ｌの底面には、分
湯用ノズル２と鋳込用ノズル３とρ；互いに所定間隔を
あけて取り付けられている。As shown in FIG. 1, a dispensing nozzle 2 and a casting nozzle 3 are attached to the bottom of the ladle 1 of the present invention at a predetermined distance from each other.
鋳込用ノズル３の径は、従来と同様である。The diameter of the casting nozzle 3 is the same as the conventional one.
分湯用ノズル２の径は、鋳込用ノズル３の径の２〜４倍
に設定されている。The diameter of the distribution nozzle 2 is set to be 2 to 4 times the diameter of the casting nozzle 3.
分湯用ノズル２および鋳込用ノズル３には、各々公知の
スライディングノズルのような開閉機構２ａ、３ａが設
けられている。The distribution nozzle 2 and the casting nozzle 3 are each provided with opening/closing mechanisms 2a and 3a, such as known sliding nozzles.
取鍋１内の溶鋼を他の取鍋に分湯する場合には、分湯用
ノズル２を使用する。When distributing molten steel in ladle 1 to another ladle, dispensing nozzle 2 is used.
即ち、鋳込用ノズル３は閉じた状態となし、開閉機構２
ａを用いて、分湯用ノズル２を通し取鍋ｌ内の溶鋼を他
の取鍋に排出する。That is, the casting nozzle 3 is in a closed state, and the opening/closing mechanism 2 is closed.
Using a, the molten steel in the ladle l is discharged into another ladle through the distribution nozzle 2.
この結果、取鍋１内の溶鋼４を鋳込用ノズル３の約４〜
１６倍の速さで排出することができる。As a result, the molten steel 4 in the ladle 1 is
It can be discharged 16 times faster.
このようにして、取鍋１から所定量の溶鋼を排出した後
、開閉機構２ａを閉じ、次の他の取鍋に上記と同じよう
にして残りの溶鋼を排出する。After a predetermined amount of molten steel is discharged from the ladle 1 in this manner, the opening/closing mechanism 2a is closed, and the remaining molten steel is discharged to the next other ladle in the same manner as described above.
このとき、分湯ノズル２内に浸入した溶鋼は、ノズル径
が大であり且つ閉鎖時間が短いため、凝固することがな
い。At this time, the molten steel that has entered the distribution nozzle 2 does not solidify because the nozzle diameter is large and the closing time is short.
取鍋１内の溶鋼をタンデイツシュまたは鋳型に注入する
ときは、分湯用ノズル２を閉じた状態となし、鋳込用ノ
ズル３の開閉機構３ａを開く。When pouring the molten steel in the ladle 1 into a tundish or mold, the dispensing nozzle 2 is closed and the opening/closing mechanism 3a of the casting nozzle 3 is opened.
次にこの発明を実施例により説明する。 Next, the present invention will be explained with reference to examples.
直径２３０ｍ＋の分湯用ノズル２を有する容量２５０屯
の本発明の取鍋１を使用した。転炉から出鋼した２５０
屯の溶鋼を取鍋１内に収容した後、分湯用ノズル２を通
して他の取鍋に１００屯の溶鋼を分湯した。このときの
分湯時間および分湯前後における溶鋼の低下温贋、なら
びに取鍋１内に残った溶鋼を次の他の取鍋に分湯用ノズ
ル２を通して供給したときの分湯用ノズル２の目詰りの
有無を第１表に示す。A ladle 1 according to the invention having a capacity of 250 tons and having a dispensing nozzle 2 with a diameter of 230 m+ was used. 250 steel tapped from the converter
After a ton of molten steel was stored in a ladle 1, 100 ton of molten steel was dispensed into another ladle through a dispensing nozzle 2. The distribution time, the drop in temperature of the molten steel before and after the distribution, and the temperature of the distribution nozzle 2 when the molten steel remaining in the ladle 1 is supplied to the next ladle through the distribution nozzle 2. Table 1 shows the presence or absence of clogging.
比較のために、従来の取鍋５を使用し、直径８０嘘の鋳
込用ノズル７を通して他の取鍋に１００屯の溶鋼を分湯
したときの分湯時間および分湯前後給したときの鋳込用
ノズル７の目詰りの有無を第１表に併せて示す。For comparison, we will use a conventional ladle 5 to dispense 100 tons of molten steel into another ladle through a casting nozzle 7 with a diameter of 80 mm, and the dispensing time and the time before and after dispensing the molten steel. Table 1 also shows whether or not the casting nozzle 7 was clogged.
第１表に示すように、鋳込用ノズル７を使用した従来の
取鍋５は、分湯時間が長く、溶鋼の温度低下が太きかっ
た。As shown in Table 1, the conventional ladle 5 using the casting nozzle 7 had a long pouring time and a large drop in temperature of molten steel.
さらに、鋳込用ノズル７に浸入した溶鋼は凝固し、目詰
りが生じた。Furthermore, the molten steel that entered the casting nozzle 7 solidified, causing clogging.
これに対して、第１表に示すように、分湯用ノズル２を
使用した本発明の取鍋ｌは、分湯時間が短かく、溶鋼の
温度低下が極めて少なかった。On the other hand, as shown in Table 1, in the ladle 1 of the present invention using the dispensing nozzle 2, the dispensing time was short and the temperature drop of the molten steel was extremely small.
さらに、分湯用ノズル２には溶鋼の凝固はほとんどみら
れず、目詰りは生じなかった。Furthermore, almost no solidification of molten steel was observed in the distribution nozzle 2, and no clogging occurred.
第１表
〔発明の効果〕
以上説明したように、この発明によれば、分湯時の溶鋼
の温度低下を極めて小さく押えることができるので、溶
鋼再加熱の必要がなく、従ってこれによるエネルギーの
ロスがなく、しかもこのような溶鋼再加熱作業および分
湯用ノズルの目詰りがないことから、分湯作業が円滑に
行なわれ、さらに、歩留りが向上し、製品品質が安定す
る等、産業上多くの有用な効果が得られる。Table 1 [Effects of the Invention] As explained above, according to the present invention, the temperature drop of molten steel during separation can be suppressed to an extremely small level, so there is no need to reheat the molten steel, and therefore energy consumption is saved. Since there is no loss, and there is no clogging of the molten steel reheating work or the nozzle for dispensing, the dispensing work is carried out smoothly, and furthermore, the yield is improved and product quality is stabilized, which is an industrial advantage. Many useful effects can be obtained.
第１図はこの発明の一実施態様を示す断面図、第２図は
従来の取鍋の一例を示す断面図である。
図面において、
１・・・取鍋、 ２・・・分湯用ノズル、２
ａ・・・開閉機構、 ３・・・鋳込用ノズル、
３ａ・・・開閉機構、 ４・・・溶鋼、５・・
・取鍋、 ６・・・砂、７・・・鋳込用ノ
ズル、 ７ａ・・・開閉機構。FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a sectional view showing an example of a conventional ladle. In the drawings: 1... Ladle, 2... Hot water nozzle, 2
a... Opening/closing mechanism, 3... Casting nozzle,
3a... Opening/closing mechanism, 4... Molten steel, 5...
- Ladle, 6...Sand, 7...Casting nozzle, 7a...Opening/closing mechanism.
Claims (1)
取鍋において、 前記取鍋の底面に、前記鋳込用ノズルとともに前記鋳込
用ノズルよりも径の大きい分湯用ノズルおよび前記分湯
用ノズルの開閉機構が取り付けられたことを特徴とする
取鍋。[Scope of Claims] A ladle equipped with a casting nozzle having an opening/closing mechanism on the bottom surface, wherein the bottom surface of the ladle is provided with a dispensing liquid having a diameter larger than that of the casting nozzle together with the casting nozzle. A ladle characterized in that a nozzle and an opening/closing mechanism for the hot water distribution nozzle are attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2677388A JPH01202360A (en) | 1988-02-08 | 1988-02-08 | Ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2677388A JPH01202360A (en) | 1988-02-08 | 1988-02-08 | Ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01202360A true JPH01202360A (en) | 1989-08-15 |
Family
ID=12202619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2677388A Pending JPH01202360A (en) | 1988-02-08 | 1988-02-08 | Ladle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01202360A (en) |
-
1988
- 1988-02-08 JP JP2677388A patent/JPH01202360A/en active Pending
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