JPS62266383A - Dc arc furnace - Google Patents
Dc arc furnaceInfo
- Publication number
- JPS62266383A JPS62266383A JP10695886A JP10695886A JPS62266383A JP S62266383 A JPS62266383 A JP S62266383A JP 10695886 A JP10695886 A JP 10695886A JP 10695886 A JP10695886 A JP 10695886A JP S62266383 A JPS62266383 A JP S62266383A
- Authority
- JP
- Japan
- Prior art keywords
- hearth
- furnace
- electrode
- arc
- furnace body
- 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 description 6
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 １産業上の利用分野」 本発明は直流アーク炉に関する。[Detailed description of the invention] 1. Industrial application field” The present invention relates to a DC arc furnace.
「従来の技術」
一般の直流アーク炉は、陽極となる金属製の炉底電照を
底部に備えた炉床部と、この炉床部の上部を形成する炉
殻部とが一体に構成されている。``Prior Art'' A general DC arc furnace has a hearth section that is equipped with a metal hearth bottom electric light that serves as an anode at the bottom, and a furnace shell section that forms the upper part of this hearth section, which are integrally constructed. ing.
そして、炉体内にスクラップを収容したあと、黒鉛製の
陰１ｉ ７ＩＸ題を炉内に挿入し、これとスクラップと
の間でアーク放電してスクラップを溶解する。Then, after storing the scrap in the furnace body, a graphite shade 1i 7IX is inserted into the furnace, and arc discharge is generated between this and the scrap to melt the scrap.
その際、前記炉底電極は、高温の溶場およびスクラップ
と直接接触するために、溶損や損傷を受は易く、寿命が
短い。このため、この種の直流アーク炉では、炉底電極
の補修・交換を頻繁に行なう必要がある。At this time, the furnace bottom electrode comes into direct contact with the high-temperature melt field and scrap, so it is susceptible to melting and damage and has a short lifespan. Therefore, in this type of DC arc furnace, it is necessary to frequently repair and replace the furnace bottom electrode.
「発明が解決しようとする問題点」
ところで、従来の直流アーク炉では、上記のような炉底
電極の補修・交換作業を行なう際に、炉体全体を冷却し
なければならなかった。このため、炉体が十分に冷える
まで炉を休止しなければならず、その結果、炉の稼動率
か低く、生産性が低いといった問題があった。ま１こ、
Ｎｌｉ修・交換作業の都度、炉体全体を冷却するために
、炉の熱損失が大きく、再加熱のためのエネルギーか必
要であり、コストがかかるといった欠点があった。"Problems to be Solved by the Invention" By the way, in conventional DC arc furnaces, the entire furnace body had to be cooled when repairing or replacing the furnace bottom electrode as described above. For this reason, the furnace must be shut down until the furnace body has sufficiently cooled down, resulting in problems such as low furnace operation rate and low productivity. Ma1ko,
Each time Nli repair/replacement work is performed, the entire furnace body must be cooled, resulting in a large heat loss in the furnace, requiring energy for reheating, and increasing costs.
さらにまた、従来の直流アーク炉では、炉体を据え付け
たままの状態で、炉底重陽の補修・交換作業を行なわな
ければｔらＩυいので、作業環境が悪く、作業能率が悪
い。また、炉体下部ての作業のため足場が悪く、作業の
際に危険性が大きいといった問題らあった。Furthermore, in conventional DC arc furnaces, it is difficult to repair or replace the furnace bottom with the furnace body still installed, resulting in a poor working environment and poor working efficiency. There was also the problem that the work was done at the bottom of the furnace, so the footing was poor and the work was very dangerous.
「問題点を解決するための手段」
本発明の直流アーク炉は、炉体が上部の炉殻部と下部の
炉床部とに分離可能に構成され、該炉床部を切り離して
池の場所へ移動可能にしたことを特徴とする。``Means for Solving the Problems'' The DC arc furnace of the present invention has a furnace body configured to be separable into an upper furnace shell portion and a lower hearth portion, and the hearth portion is separated and a pond is placed. It is characterized by being able to be moved to.
「作用 」
本発明では、炉底電極の捕修・交換をする場合に、炉殻
部から炉床部を切り離し、この炉床部を適当な場所に移
動したうえで補修・交換作業を行なう。一方、炉殻部に
は、別の新しい炉床部を装着することにより、炉は休止
することなく稼動する。"Function" In the present invention, when repairing or replacing the hearth electrode, the hearth is separated from the hearth shell, and the hearth is moved to an appropriate location before the repair or replacement work is performed. On the other hand, by attaching another new hearth to the furnace shell, the furnace can continue to operate without interruption.
「実施例１
次に、図面を用いて本発明の一実施例を詳細に説明する
。Embodiment 1 Next, an embodiment of the present invention will be described in detail with reference to the drawings.
図は本実施例の直流アーク炉の縦断面図であり、図中符
号１は炉体、２は炉体の開口部を塞ぐ炉蓋である。The figure is a longitudinal cross-sectional view of the DC arc furnace of this embodiment, in which reference numeral 1 denotes a furnace body, and 2 denotes a furnace lid that closes the opening of the furnace body.
上記炉体１は、上部の炉殻部ｌＡと下部の炉床部ＩＢと
から構成されている。炉殻部ＩＡは、上部が円筒形で、
下部が下方に向けて窄まった形状とされており、作業床
Ｆ１を貫通した状態でブラケット３により固定されてい
る。なお、この作業床Ｆｌは、床面Ｆ２の所定距離上方
に設けられたものである。The furnace body 1 is composed of an upper furnace shell portion IA and a lower hearth portion IB. The furnace shell part IA has a cylindrical upper part,
The lower part thereof is tapered downward, and is fixed by a bracket 3 while passing through the work floor F1. Note that this work floor Fl is provided a predetermined distance above the floor surface F2.
一方、炉床部ＩＢは、溶湯を保持するのに十分な容積を
もつ有底円筒状のものであり、その上端開口部は炉殻ｗ
ＪＩＡの下端開口部と同径とされ、隙間なく接合可能と
されている。この炉床部ＩＢは、床面Ｆ２上を走行する
搬送台車ｌｉ上２に昇降機構５を介して取り付けられて
いる。炉床部ＩＢの底部には、炉底電極６が貫入固定さ
れており、その上端か炉床部ＩＨの内底面に露出してい
る。また、この炉底電極６の下端には、先端にコネクタ
７を備えたケーブル８が接続されている。On the other hand, the hearth part IB has a bottomed cylindrical shape with a volume sufficient to hold the molten metal, and its upper end opening is connected to the hearth w.
It has the same diameter as the lower end opening of the JIA, and can be joined without any gaps. This hearth part IB is attached via an elevating mechanism 5 to a transport vehicle li upper 2 that runs on a floor surface F2. A hearth electrode 6 is inserted and fixed into the bottom of the hearth part IB, and its upper end is exposed at the inner bottom surface of the hearth part IH. Further, a cable 8 having a connector 7 at its tip is connected to the lower end of the hearth bottom electrode 6.
一方、前記炉蓋２は、従来と同様の図示しない開閉機構
によって、開閉操作されるようになっている。この炉蓋
２の中央には電極挿入孔９が形ルミされており、この挿
入孔９を通して、棒状の陰極電極ＩＯが、図示しない電
極昇降機構によって昇降操作されるようになっている。On the other hand, the furnace lid 2 is opened and closed by a conventional opening and closing mechanism (not shown). An electrode insertion hole 9 is formed in the center of the furnace lid 2, and through this insertion hole 9, a rod-shaped cathode electrode IO is lifted and lowered by an electrode lifting mechanism (not shown).
そして、この陰極電極！０は、ケーブル１１を介して電
源１２の陰極に接続されており、前記コネクタ７と、電
源Ｉ２の陽極に接続されたケーブル１３のコネクタト１
とを接続することによって、両電極６．１０への通電が
なされろようになっている。なお、図中符号Ｓは溶解前
のスクラップ、ＹはそのスクラップＳが溶解しｆこ後の
溶、易を示している。And this cathode electrode! 0 is connected to the cathode of the power supply 12 via the cable 11, and the connector 7 and the connector 1 of the cable 13 are connected to the anode of the power supply I2.
By connecting these, both electrodes 6.10 are energized. In the figure, the symbol S indicates the scrap before melting, and Y indicates the ease of melting after the scrap S has been melted.
次に、このような構成からなる直流アーク炉の作用を説
明する。 ′
今、炉殻部ＩＡと炉床部ＩＢとが分離された状態にある
とする。この状態から操業を開始するには、まず搬送台
車・１を移動して炉床部ＩＢを炉殻部ＩＡの真下に移動
し、昇降慝構５を働かせて炉床部ＩＢを上昇さＵ゛、炉
殻部ＩＡの下端と炉床部ＩＢの上端を隙間なく接合し、
コネクタ７．１４を接続オろ。次いて、枦流２を開閉ｉ
溝によって開き、炉体１内にスクラップＳを入れて炉蓋
２を閉じる。そして、陰極電極ＩＯを炉蓋２の電極挿入
孔９から炉体１内に挿入して通電し、スクラップＳと陰
極電極１０との間でアーク放電してスクラップＳを溶解
する。Next, the operation of the DC arc furnace having such a configuration will be explained. ' It is now assumed that the hearth part IA and the hearth part IB are in a separated state. To start operation from this state, first move the conveyor cart 1 to move the hearth part IB directly below the hearth part IA, and then activate the lifting mechanism 5 to raise the hearth part IB. , the lower end of the hearth part IA and the upper end of the hearth part IB are joined without any gap,
Connect connector 7.14. Next, open and close the stream 2
It opens with a groove, puts the scrap S into the furnace body 1, and closes the furnace lid 2. Then, the cathode electrode IO is inserted into the furnace body 1 through the electrode insertion hole 9 of the furnace lid 2 and energized, causing arc discharge between the scrap S and the cathode electrode 10 to melt the scrap S.
そして、溶解作業が終了したら、コネクタ７゜Ｉ４を切
り離し、搬送台車・１の昇降機構５を操作して炉床部Ｉ
Ｂを降下させる。そして、搬送台車４を次工程に移動し
、溶湯を処理する。この時、炉底電極６に損傷等の異常
が発見された場合には、搬送台車４を安全な作業場所に
移動し、炉床部ｌＢを十分に冷却した後、炉底型！６の
補修あるいは交換作業を行なう。When the melting work is completed, disconnect the connector 7°I4, operate the lifting mechanism 5 of the transport vehicle 1, and move the hearth part I.
Lower B. Then, the carriage 4 is moved to the next process, and the molten metal is processed. At this time, if any abnormality such as damage is found in the hearth electrode 6, move the carrier 4 to a safe work place, cool down the hearth part IB sufficiently, and then move the hearth electrode 6 to the hearth electrode 6. Perform repair or replacement work in step 6.
一方、炉床部１Ｂが蓮び去られた後の炉、段部ＩＡには
、別の搬送台車によって搬送してきた新しい炉床部を装
若し、再び上記と同（、ｌの操作を操り返す。こうする
ことによって、炉は体止ずろことなく連続操業される。On the other hand, after the hearth part 1B has been removed, a new hearth part that has been transported by another carrier is installed in the furnace and stage part IA, and the same operations as described above (and 1) are carried out again. By doing this, the furnace can be operated continuously without stopping.
このような（Ｒ成からなる直流アーク枦によれば、炉殻
部ＩＡから炉床部ＩＢを分離した状ｆきで、炉床部１１
３の炉底７Ｍ極６の捕修・交換作業を行なうことができ
る。このため、炉殻部ＩＡに新しい炉床部ＩＢを装着す
ることにより、炉を連続的に稼動することができ、炉の
稼動率の向上により生産性の向上が図れる。また、炉底
電極６の補修・交換のために炉殻部ＩＡを冷却する必要
がないので、炉の再加熱に必要なエネルギーを減らすこ
とができ、製造コストの低減が図れる。According to such a DC arc rod composed of (R), the hearth part IB is separated from the hearth part IA, and the hearth part 11 is separated from the hearth part IA.
It is possible to carry out repair/replacement work on the hearth bottom 7M pole 6 of No. 3. Therefore, by attaching a new hearth part IB to the furnace shell part IA, the furnace can be operated continuously, and productivity can be improved by improving the operating rate of the furnace. Further, since there is no need to cool the furnace shell portion IA for repairing or replacing the furnace bottom electrode 6, the energy required for reheating the furnace can be reduced, and manufacturing costs can be reduced.
また、分離した炉床部ＩＢを設備が整った作業場所に移
動し、そこで炉底電極６の補修・交換作業を行なうこと
ができるので、作業が安全かつ能率よく行なえろ。Furthermore, since the separated hearth part IB can be moved to a well-equipped work place and the hearth bottom electrode 6 can be repaired and replaced there, the work can be done safely and efficiently.
また、溶湯を次工程に移送する際に、従来では炉体全体
を傾動して溶湯をし一ドルに出湯していたが、本実奄例
ては、炉体を傾動して出湯する必要がないので、出湯に
要するエネルギーを減少することができる。In addition, when transferring molten metal to the next process, conventionally the entire furnace body was tilted to tap the molten metal, but in this actual example, it is now necessary to tilt the furnace body to tap the molten metal. Since there is no hot water, the energy required for hot water tap can be reduced.
なお、上記実像例では、炉殻部ＩＡの下端と炉床部ＩＢ
の上端との接合前が水平になっているが、炉床部ＩＢの
上端をテーパ状に形成する一方、炉殻部ＩＡの下端をそ
れと対応するように形成することによって、炉殻部ＩＡ
と炉床部ＩＢとの軸心合わせをより容易にすることもで
きろ。In addition, in the above actual image example, the lower end of the hearth part IA and the hearth part IB are
Although the part before joining with the upper end is horizontal, the upper end of the hearth part IB is formed into a tapered shape, and the lower end of the hearth part IA is formed to correspond to the upper end of the hearth part IB.
It would also be possible to more easily align the axes between the hearth part IB and the hearth part IB.
「発明の効果」
本発明のアーク炉によれば、次のような浸れた効果が得
られる。"Effects of the Invention" According to the arc furnace of the present invention, the following effects can be obtained.
■炉底電極の補修・交換作業を行なう際に、炉殻部から
炉床部を分離した後、炉殻部に別の炉床部を組み合わせ
ることによって、炉を連続的に稼動することができる。■When repairing or replacing the hearth electrode, the furnace can be operated continuously by separating the hearth from the hearth and then combining the hearth with another hearth. .
したがって、炉の稼動率を高めることができると同時に
、補修・交換のための炉殻部の冷却を必要としないので
、熱損失が少なく、生産性の向上が図れるとともに、製
造コストを下げることが可能である。Therefore, it is possible to increase the operating rate of the furnace, and at the same time, there is no need to cool the furnace shell for repair or replacement, so there is less heat loss, productivity can be improved, and manufacturing costs can be reduced. It is possible.
■分離した炉床部を設備の整った作業場所に移動するこ
とができ、損傷した炉底電極の補修・交換作業を安全か
つ能率よく行なうことができる。■The separated hearth can be moved to a well-equipped work area, allowing repair and replacement of damaged hearth electrodes to be carried out safely and efficiently.
図は本発明の一実施例の直流アーク炉の縦断面図である
。
■・・・炉体 ＩＡ・・・炉殻部 ＩＢ・・炉床部２
・炉蓋 ４・・・搬送台車 ６・・炉底電極１０・・・
陰極電極The figure is a longitudinal sectional view of a DC arc furnace according to an embodiment of the present invention. ■... Furnace body IA... Furnace shell part IB... Hearth part 2
・Furnace lid 4...Transportation truck 6...Furnace bottom electrode 10...
cathode electrode
Claims (1)
いて、 前記炉体は、上部の炉殻部と下部の炉床部とに分離可能
に構成され、該炉床部を切り離して他の場所へ移動可能
にしたことを特徴とする直流アーク炉。[Claims] A DC arc furnace equipped with a furnace body having a hearth electrode at the bottom, wherein the furnace body is configured to be separable into an upper furnace shell portion and a lower hearth portion, and the hearth A DC arc furnace characterized by parts that can be separated and moved to other locations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10695886A JPS62266383A (en) | 1986-05-10 | 1986-05-10 | Dc arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10695886A JPS62266383A (en) | 1986-05-10 | 1986-05-10 | Dc arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62266383A true JPS62266383A (en) | 1987-11-19 |
Family
ID=14446847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10695886A Pending JPS62266383A (en) | 1986-05-10 | 1986-05-10 | Dc arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62266383A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519896U (en) * | 1991-08-28 | 1993-03-12 | 新日本製鐵株式会社 | Furnace body exchange device for electric furnace |
| JPH06508424A (en) * | 1992-03-25 | 1994-09-22 | エムアーエン グーテホツフヌングスヒユツテ アクチエンゲゼルシヤフト | multistage hydraulic cylinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341602A (en) * | 1976-09-28 | 1978-04-15 | Mitsubishi Electric Corp | Controlling device for one-through boiler |
| JPS6036877A (en) * | 1983-05-05 | 1985-02-26 | マンネスマン・アクチエンゲゼルシヤフト | Furnace body of direct current arc furnace |
-
1986
- 1986-05-10 JP JP10695886A patent/JPS62266383A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341602A (en) * | 1976-09-28 | 1978-04-15 | Mitsubishi Electric Corp | Controlling device for one-through boiler |
| JPS6036877A (en) * | 1983-05-05 | 1985-02-26 | マンネスマン・アクチエンゲゼルシヤフト | Furnace body of direct current arc furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519896U (en) * | 1991-08-28 | 1993-03-12 | 新日本製鐵株式会社 | Furnace body exchange device for electric furnace |
| JPH06508424A (en) * | 1992-03-25 | 1994-09-22 | エムアーエン グーテホツフヌングスヒユツテ アクチエンゲゼルシヤフト | multistage hydraulic cylinder |
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