JPS6159374B2 - - Google Patents
Info
- Publication number
- JPS6159374B2 JPS6159374B2 JP9221481A JP9221481A JPS6159374B2 JP S6159374 B2 JPS6159374 B2 JP S6159374B2 JP 9221481 A JP9221481 A JP 9221481A JP 9221481 A JP9221481 A JP 9221481A JP S6159374 B2 JPS6159374 B2 JP S6159374B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- reflux
- immersion
- downcomer
- castable
- 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
- 238000010992 reflux Methods 0.000 claims description 22
- 238000007654 immersion Methods 0.000 claims description 18
- 239000011449 brick Substances 0.000 claims description 9
- 238000009849 vacuum degassing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000011261 inert gas Substances 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 5
- 239000010953 base metal Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Charging Or Discharging (AREA)
Description
【発明の詳細な説明】
本発明は、環流式真空脱ガス装置に於ける浸漬
管の補修に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the repair of a dip tube in a recirculation vacuum degasser.
通常、環流式真空脱ガス装置は、真空槽とその
真空槽の下部に設けられた上昇管と、下降管があ
る。この各上昇管及び下降管は、真空槽に接続す
る環流管とこの環流管に接続し、下端部を溶鋼中
に浸漬する浸漬管からなつている。更に上昇管側
の浸漬管には不活性ガスが吹き込まれるようにな
つている。これら真空槽、上昇管、下降管は内部
が耐火物で構成され、外部が鉄皮で構成されてい
る。ただし、浸漬管については、直接溶鋼中に浸
漬するため耐火物が露出しており、内部補強材に
より支持されている。 Generally, a circulation type vacuum degassing apparatus includes a vacuum chamber, an ascending pipe provided at the bottom of the vacuum chamber, and a descending pipe. Each of the rising pipes and the descending pipes consists of a reflux pipe connected to the vacuum tank and an immersion pipe connected to the reflux pipe, the lower end of which is immersed in molten steel. Furthermore, an inert gas is blown into the dip tube on the riser side. The inside of these vacuum chambers, riser pipes, and downcomer pipes is made of refractory material, and the outside is made of iron skin. However, since the immersion tube is directly immersed in molten steel, the refractory is exposed and supported by internal reinforcing material.
上記のような環流式真空脱ガス装置に於いて、
環流管及び浸漬管は、溶鋼を順次処理していく上
で、それらを形成する耐火物が逐次溶損されてい
くことは一般に知られていることであり、これに
対して常に、耐火物の寿命延長の検討がなされて
いる。 In the above-mentioned circulation type vacuum degassing equipment,
It is generally known that the refractories that form reflux pipes and immersion pipes are sequentially eroded as molten steel is sequentially processed. Consideration is being given to extending the lifespan.
その一例として、上昇管側で使用した環流管を
下降管側へ、下降管側で使用した環流管を上昇管
側へ取り替え使用するものである。すなわち、上
昇管側からは上記したように環流エネルギーを不
与する目的で、不活性ガスが吹き込まれており、
下降管側に対して２倍の速さで溶損していくため
で、両環流管を適宜取り替え使用することによつ
て環流管の使用寿命の延長を図ろうとするもので
ある。 As an example, the reflux tube used on the rising pipe side is replaced with the downcomer side, and the reflux pipe used on the downcomer side is replaced with the rising pipe side. In other words, inert gas is blown from the riser side for the purpose of not giving reflux energy as mentioned above.
This is because the downcomer pipe is eroded twice as fast as the downcomer pipe, and the purpose is to extend the service life of the reflux pipe by appropriately replacing both reflux pipes.
これに対して浸漬管は上昇管側の浸漬管には、
不活性ガス吹き込みパイプが設けてあり、下降管
側の浸漬管とは、若干構造が異なり、環流管のよ
うに上昇管側を下降管側へ、下降管側を上昇管側
へ単純には取り替え使用することはできない。し
かし浸漬管は所定量溶鋼処理した後、溶損面をキ
ヤスタブル補修することから、上昇管側に使用し
た浸漬管については不活性ガス吹き込みパイプを
抜き取り、キヤスタブルで補修を行なうと同時に
不活性ガス吹き込みパイプ孔を閉塞することによ
り、これを下降管側の浸漬管として使用すること
ができる。 On the other hand, the dip tube on the riser side has
An inert gas blowing pipe is provided, and the structure is slightly different from the immersion pipe on the downcomer side.Like the reflux pipe, it is not possible to simply replace the ascender side with the descender side and the downcomer side with the riser side. cannot be used. However, after the immersion pipe has been treated with a predetermined amount of molten steel, the eroded surface is repaired using a castable method, so for the immersion pipe used on the riser pipe, the inert gas injection pipe is removed, and the inert gas injection pipe is repaired using a castable method at the same time. By blocking the pipe hole, it can be used as a dip pipe on the downcomer side.
一方下降管側に使用した浸漬管を上昇管側の浸
漬管として使用しようとすれば、不活性ガス吹き
込みパイプを設けなくてはならず、従つて下降管
側に使用した浸漬管は上昇管側へは使用不可能と
なる。 On the other hand, if you try to use the dip pipe used on the downcomer side as a dip pipe on the riser side, you will have to install an inert gas blowing pipe, so the dip pipe used on the downcomer side will be on the riser side. becomes unusable.
〓〓〓〓
すなわち浸漬管については上昇管側は絶えず新
しいものを使用し、下降管側は、上昇管側のもの
を使用するといつたことが一般に行なわれてい
る。〓〓〓〓
That is, it is common practice to constantly use new immersion pipes on the rising pipe side, and to use the same ones on the descending pipe side.
いずれにしても、環流管は、キヤスタブル補修
しないで使用し、一方下降管側の浸漬管は内面の
溶損面をキヤスタブル補修して使用するのである
が、耐火物の溶損速度は環流管の耐火レンガより
もキヤスタブルの方が約２倍の速さであり、これ
によつて次記の如き問題が起こる。 In any case, the reflux pipe is used without castable repair, while the immersion pipe on the downcomer side is used with castable repair on the inner surface of the eroded surface. Castable is about twice as fast as firebrick, which causes the following problems.
すなわち第１図に示す如く、下降管側の環流管
１の直下に於いて段差が生じ、溶鋼処理中にこの
段差部に地金が付着する。 That is, as shown in FIG. 1, a step is formed immediately below the reflux pipe 1 on the downcomer side, and metal base metal adheres to this step during molten steel processing.
これにより浸漬管３と環流管１の接続部が固着
し、浸漬管３を取りはずすときに環流管１の下端
部耐火レンガ４を点線で示す部分から欠損させ環
流管１の使用を不可能にしていた。 As a result, the connection between the immersion tube 3 and the reflux tube 1 becomes stuck, and when the immersion tube 3 is removed, the refractory brick 4 at the lower end of the reflux tube 1 is damaged from the part indicated by the dotted line, making it impossible to use the reflux tube 1. Ta.
本発明は、上記問題点を解決するもので、上昇
管側で所定量の溶鋼処理した浸漬管を下降管側に
使用するに際し、その溶損面をキヤスタブルで補
修を行なうとき、浸漬管の上端のキヤスタブル補
修層内にプレートレンガを介在するものである。 The present invention is intended to solve the above-mentioned problems.When using a immersion pipe treated with a predetermined amount of molten steel on the riser pipe side and repairing the melted surface with a castable tube, the upper end of the immersion pipe A plate brick is interposed within the castable repair layer.
以下、本発明の実施例を第２図及び第３図に基
づいて説明する。 Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.
第２図について、溶鋼処理前の下降管を示して
いる。環流管１は新しく取り替えたもので耐火レ
ンガ４で形成する。一方浸漬管３は上昇管側で所
定量の溶鋼を処理したものを下降管側に使用する
のであるが、この浸漬管３の溶損面をキヤスタブ
ル５で補修し、浸漬管３の上端のキヤスタブル５
の補修層内にプレートレンガ６を設置し、環流管
１に接続するものである。この状態で所定量の溶
鋼を処理すると、第３図に示すように、地金２は
プレートレンガ６の直下に形成するものである。 Referring to FIG. 2, the downcomer pipe is shown before molten steel processing. The reflux pipe 1 is newly replaced and is made of firebrick 4. On the other hand, the immersion pipe 3 is used for the descending pipe after a predetermined amount of molten steel has been treated on the rising pipe side. 5
A plate brick 6 is installed in the repair layer and connected to the reflux pipe 1. When a predetermined amount of molten steel is processed in this state, the base metal 2 is formed directly below the plate bricks 6, as shown in FIG.
本発明は上記のように構成したので、耐火レン
ガとキヤスタブルの溶損速度の違いから、浸漬管
の上端に設置したプレートレンガの直下に段差が
でき、地金はプレートレンガの直下に形成する。
従つて、従来のように環流管と浸漬管の接続部を
地金で固着するようなことはなく、浸漬管を環流
管から簡単に取りはずすことができるので、環流
管をいためるようなことはない。これによつて環
流管の使用寿命を延長することができ、コストの
低減に寄与するものである。 Since the present invention is configured as described above, due to the difference in erosion rate between the refractory brick and the castable, a step is formed directly below the plate brick installed at the upper end of the immersion tube, and the base metal is formed directly below the plate brick.
Therefore, there is no need to fix the joint between the reflux pipe and the immersion pipe with bare metal as in the past, and the immersion pipe can be easily removed from the reflux pipe, so there is no chance of damaging the reflux pipe. . This can extend the service life of the reflux tube and contribute to cost reduction.
第１図は環流式真空脱ガス装置における従来の
問題点を示す下降管の縦断面図である。第２図は
環流式真空脱ガス装置における本発明の実施例を
示す下降管の縦断面図である。第３図は環流式真
空脱ガス装置における本発明の実施後の状態を示
す下降管の拡大縦断面図である。
１……環流管、２……地金、３……浸漬管、４
……耐火レンガ、５……キヤスタブル、６……プ
レートレンガ。
〓〓〓〓
FIG. 1 is a longitudinal sectional view of a downcomer pipe showing a conventional problem in a recirculation type vacuum degassing apparatus. FIG. 2 is a longitudinal sectional view of a downcomer pipe showing an embodiment of the present invention in a recirculation type vacuum degassing apparatus. FIG. 3 is an enlarged longitudinal cross-sectional view of the downcomer pipe showing the state after implementation of the present invention in the recirculation type vacuum degassing apparatus. 1...reflux pipe, 2...base metal, 3...immersion pipe, 4
... Firebrick, 5 ... Castable, 6 ... Plate brick. 〓〓〓〓
Claims (1)
れたキヤスタブル補修浸漬管に於いて、該浸漬管
の上端のキヤスタブル補修層内に、プレートレン
ガを位置せしめてなる真空脱ガス装置のキヤスタ
ブル補修浸漬管。1. Castable repair of vacuum degassing equipment by placing a plate brick in the castable repair layer at the upper end of the castable repair immersion pipe connected to the reflux pipe on the downcomer side of the vacuum degassing equipment. dip tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9221481A JPS57207511A (en) | 1981-06-17 | 1981-06-17 | Immersion pipe to be repaired with castable in vacuum degassing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9221481A JPS57207511A (en) | 1981-06-17 | 1981-06-17 | Immersion pipe to be repaired with castable in vacuum degassing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57207511A JPS57207511A (en) | 1982-12-20 |
| JPS6159374B2 true JPS6159374B2 (en) | 1986-12-16 |
Family
ID=14048184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9221481A Granted JPS57207511A (en) | 1981-06-17 | 1981-06-17 | Immersion pipe to be repaired with castable in vacuum degassing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57207511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH029466U (en) * | 1988-07-04 | 1990-01-22 |
-
1981
- 1981-06-17 JP JP9221481A patent/JPS57207511A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH029466U (en) * | 1988-07-04 | 1990-01-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57207511A (en) | 1982-12-20 |
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