JPH07120172A - Ladle refinery electrode apparatus - Google Patents
Ladle refinery electrode apparatusInfo
- Publication number
- JPH07120172A JPH07120172A JP26371993A JP26371993A JPH07120172A JP H07120172 A JPH07120172 A JP H07120172A JP 26371993 A JP26371993 A JP 26371993A JP 26371993 A JP26371993 A JP 26371993A JP H07120172 A JPH07120172 A JP H07120172A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- ladle
- board
- flameproof
- graphite electrode
- 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.)
- Granted
Links
Landscapes
- Discharge Heating (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は取鍋に収納した金属溶湯
等の溶解材を加熱するアークを発生する黒鉛電極棒を３
本並設した取鍋精錬電極装置に関する。BACKGROUND OF THE INVENTION The present invention relates to a graphite electrode rod for generating an arc for heating a molten material such as molten metal stored in a ladle.
The present invention relates to a ladle refining electrode device arranged in parallel.
【０００２】[0002]
【従来の技術】近年、取鍋に収納した溶鋼を黒鉛電極棒
によるアークで昇熱しつつ、スラグ精錬する取鍋精錬が
行われている。ここでアークを発生する取鍋精錬電極装
置として、アークを発生する黒鉛電極棒を保持する電極
保持部を設け、電極保持部の下面に防炎盤を配置し、防
炎盤により溶解材の熱から電極保持部を保護する様にし
たものが知られている。このものでは黒鉛電極棒は３本
並設されており、三相交流が給電される。2. Description of the Related Art In recent years, ladle refining has been carried out in which molten steel stored in a ladle is slag refined while being heated by an arc of a graphite electrode rod. Here, as a ladle refining electrode device that generates an arc, an electrode holding part that holds a graphite electrode rod that generates an arc is provided, a flameproof board is placed on the lower surface of the electrode holding part, and the flameproof board heats the melting material. It is known that the electrode holding portion is protected from the above. In this structure, three graphite electrode rods are arranged side by side, and three-phase alternating current is supplied.
【０００３】このものでは図８に示す様に、円弧中心Ｐ
６の周りに仮想的に描かれる仮想円軌跡Ｐ７にそって、
３本の黒鉛電極棒８００の軸芯Ｐ５は略均等間隔で配置
されている。これにより３本の黒鉛電極棒８００による
均一加熱性が確保される。仮想円軌跡Ｐ７はＰＣＤ（Ｐ
ｉｔｃｈ−Ｃｉｒｃｌｅ−Ｄｉａｍｅｔｅｒ）と呼ばれ
る。In this case, as shown in FIG.
Along a virtual circle locus P7 that is virtually drawn around 6
The axes P5 of the three graphite electrode rods 800 are arranged at substantially equal intervals. This ensures uniform heating by the three graphite electrode rods 800. The virtual circle locus P7 is PCD (P
It is called as “itch-Circle-Diameter”.
【０００４】上記した取鍋精錬電極装置では、各防炎盤
８０２の先端から第１突出耳部９００を設け、防炎盤８
０２の側面部から第２突出耳部９０１を設けている。そ
して図８から理解できる様に突出耳部９００及び９０１
のボルト挿通孔９００ｃ及び９０１ｃにボルト９０２を
通し、ナット９０３を締めて防炎盤８０２を電極保持部
９５０に固定している。In the ladle refining electrode device described above, the first protruding ear portion 900 is provided from the tip of each flameproof board 802, and the flameproof board 8 is provided.
The second protruding ear portion 901 is provided from the side surface portion of 02. And as can be seen from FIG. 8, protruding ears 900 and 901.
The bolt 902 is inserted through the bolt insertion holes 900c and 901c of FIG. 3 and the nut 903 is tightened to fix the flameproof board 802 to the electrode holding portion 950.
【０００５】このものでは、突出耳部９００及び９０１
が防炎盤８０２の外縁の外側に配置されている関係で、
ボルト９０２も防炎盤８０２の外縁の外側に配置されて
いる。そのためボルト９０２の着脱が容易である利点が
得られる。また上記した取鍋精錬電極装置では、隣設す
る防炎盤８０２同士におけるスパーク防止のため、隣設
する防炎盤８０２同士の距離Ｌ４（図７参照）を所定量
必要とするため、隣設する防炎盤８０２に第２突出耳部
９０１を接近させるには限度がある。In this case, the protruding ears 900 and 901 are provided.
Is arranged outside the outer edge of the flameproof board 802,
The bolt 902 is also arranged outside the outer edge of the flameproof board 802. Therefore, there is an advantage that the bolt 902 can be easily attached and detached. In the ladle refining electrode device described above, a predetermined amount of distance L4 (see FIG. 7) between adjacent flameproof boards 802 is required to prevent sparks between adjacent flameproof boards 802. There is a limit in bringing the second protruding ear portion 901 close to the flameproof board 802.
【０００６】[0006]
【発明が解決しようとする課題】ところで上記装置で
は、第２突出耳部９０１が防炎盤８０２の外縁の外側に
配置されているため、仮想円軌跡Ｐ７の直径Ｄ１が大き
くなりがちである。この場合、それだけ黒鉛電極棒８０
０が外側方向に位置することになる。即ち、取鍋に内張
されている耐火物層の内周面に黒鉛電極棒８００がその
ぶん近づく。By the way, in the above apparatus, since the second protruding ear portion 901 is arranged outside the outer edge of the flameproof board 802, the diameter D1 of the virtual circle locus P7 tends to be large. In this case, the graphite electrode rod 80
0 will be located in the outward direction. That is, the graphite electrode rod 800 comes closer to the inner peripheral surface of the refractory layer lined in the ladle.
【０００７】この場合、黒鉛電極棒８００から発生する
アークが取鍋の耐火物層に近づくことになり、取鍋の耐
火物層の損傷が促進され、耐火物層の寿命は必ずしも充
分ではない。一方、取鍋の耐火物層の損傷を抑制すべく
仮想円軌跡Ｐ７の直径Ｄ１を小さくすると、隣設する防
炎盤８０２同士の間でスパークが生じ易くなる。In this case, the arc generated from the graphite electrode rod 800 comes close to the refractory layer of the ladle, the damage of the refractory layer of the ladle is promoted, and the life of the refractory layer is not always sufficient. On the other hand, if the diameter D1 of the virtual circle locus P7 is reduced in order to suppress damage to the refractory layer of the ladle, sparks are likely to occur between adjacent flameproof boards 802.
【０００８】本発明は上記した実情に鑑みなされたもの
であり、防炎盤同士のスパーク発生を抑制しつつ仮想円
軌跡の直径を小さくでき、これにより取鍋の耐火物層の
損傷を抑制し、耐火物層の長寿命化に貢献できる取鍋精
錬電極装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and it is possible to reduce the diameter of the virtual circle locus while suppressing the occurrence of sparks between flameproof boards, thereby suppressing damage to the refractory layer of the ladle. An object of the present invention is to provide a ladle refining electrode device that can contribute to extending the life of the refractory layer.
【０００９】[0009]
【課題を解決するための手段】本発明の取鍋精錬電極装
置は、取鍋内の溶解材を加熱するアークを発生する黒鉛
電極棒を保持する電極保持部と、黒鉛電極棒が挿通され
る電極挿通孔を有し電極保持部の下面に対向して配置さ
れた防炎盤と、防炎盤の先端部を電極保持部に固定する
第１固定部及び該防炎盤の側面部を電極保持部に固定す
る第２固定部とを備えた１組の電極装置を用い、電極装
置を３組近接させて構成され、各黒鉛電極棒の軸芯が仮
想円軌跡にそって配置された取鍋精錬電極装置におい
て、第１固定部及び該第２固定部のうち少なくとも第２
固定部は、電極保持部の下面に当接して固定される第１
当接板部と、防炎盤の上面に当接して固定される第２当
接板部と、第１当接板部及び第２当接板部を連設すると
共に防炎盤の上面と電極保持部の下面との間に隙間を形
成する連設立板部とで構成され、第１当接板部、第２当
接板部及び連設板部は、防炎盤の外縁から外側に突出し
ていない構成とされ、仮想円軌跡の径を小さくしたこと
を特徴とするものである。In the ladle refining electrode device of the present invention, the graphite electrode rod is inserted through an electrode holding portion for holding a graphite electrode rod for generating an arc for heating a molten material in the ladle. A flameproof board having an electrode insertion hole and arranged to face the lower surface of the electrode holding section, a first fixing section for fixing the tip section of the flameproof board to the electrode holding section, and a side section of the flameproof board. A set of electrode devices provided with a second fixing part that is fixed to the holding part is used, and three sets of electrode devices are arranged in close proximity to each other, and the axis of each graphite electrode rod is arranged along a virtual circle locus. In the pot refining electrode device, at least a second of the first fixing part and the second fixing part
The fixing part is a first part fixed to the lower surface of the electrode holding part.
An abutting plate portion, a second abutting plate portion that abuts and is fixed to the upper surface of the flameproof board, and a first abutting plate portion and a second abutting plate portion that are connected to each other and that is an upper surface of the flameproof board The first contact plate part, the second contact plate part, and the continuous plate part are formed from the outer edge of the flameproof board to the outside. It is characterized in that it does not project and the diameter of the virtual circle locus is made small.
【００１０】[0010]
【作用】第２固定部は、防炎盤の外縁から外側へは突出
していない。The second fixing portion does not project outward from the outer edge of the flameproof board.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面を参照して説明
する。電極装置１は、図１に示す様に、黒鉛電極棒１０
と、黒鉛電極棒１０の外周部を保持する略筒状の銅系の
電極保持部１１と、電極保持部１１を支持する基部１２
と、電極保持部１１を金属溶湯の熱から保護する防炎盤
１２とを備えている。電極保持部１１には、黒鉛電極棒
１０に給電する給電管１５が装備されている。電極保持
部１１にはクランパー１７が装備されている。クランパ
ー１７は、保持軸１７０により回動可能に枢支されたク
ランプレバー１７１と、クランプレバー１７１にピン１
７１ｋにより連設された作動レバー１７２とを備えてい
る。作動レバー１７２によりクランプレバー１７１が矢
印Ｘ１方向に回動すると、クランパー１７の挟持作用が
得られる。クランパー１７の挟持作用により黒鉛電極棒
１０が電極保持部１１に保持されてる。なお黒鉛電極棒
１０を下降する際にはクランパー１７を緩める。Embodiments of the present invention will be described below with reference to the drawings. The electrode device 1 includes a graphite electrode rod 10 as shown in FIG.
A substantially cylindrical copper-based electrode holding portion 11 that holds the outer peripheral portion of the graphite electrode rod 10, and a base portion 12 that supports the electrode holding portion 11.
And a flameproof board 12 for protecting the electrode holding portion 11 from the heat of the molten metal. The electrode holder 11 is equipped with a power supply tube 15 for supplying power to the graphite electrode rod 10. The electrode holder 11 is equipped with a clamper 17. The clamper 17 includes a clamp lever 171 pivotally supported by a holding shaft 170 and a pin 1 attached to the clamp lever 171.
And an operating lever 172 connected in series by 71k. When the clamp lever 171 is rotated in the arrow X1 direction by the operating lever 172, the clamping action of the clamper 17 is obtained. The graphite electrode rod 10 is held by the electrode holding portion 11 by the clamping action of the clamper 17. When the graphite electrode rod 10 is lowered, the clamper 17 is loosened.
【００１２】図２は防炎盤１２の平面図を示し、図３は
防炎盤１２の断面図を示す。防炎盤１２はステンレス鋼
製であり、図２に示す様に電極挿通孔１２０を有するリ
ング部１２２と、リング部１２２の基端部１２２ｘ側に
連設された２個の脚部１２４とを備えている。防炎盤１
２のリング部１２２及び脚部１２４には冷却水通路１２
６が形成されており、冷却水通路１２６には給水パイプ
１２７から冷却水が供給され、防炎盤１２は冷却され
る。これにより電極保持部１１の高温化抑制に有利であ
る。FIG. 2 is a plan view of the flameproof board 12, and FIG. 3 is a sectional view of the flameproof board 12. The flameproof board 12 is made of stainless steel, and has a ring portion 122 having an electrode insertion hole 120 as shown in FIG. 2 and two leg portions 124 connected to the base end portion 122x of the ring portion 122. I have it. Flameproof board 1
In the ring portion 122 and the leg portion 124 of the second cooling water passage 12,
6 is formed, cooling water is supplied to the cooling water passage 126 from the water supply pipe 127, and the flameproof board 12 is cooled. This is advantageous for suppressing the temperature rise of the electrode holding portion 11.
【００１３】防炎盤１２の縦孔１２ｃには、ボルト挿通
孔２０を有すると共に補強をも兼ねる比較的厚肉の座筒
部２１が液密的に溶接等で固定されている。座筒部２１
の上端２１ｍ及び下端２１ｎは微量ながら防炎盤１２の
表出面から突出している。防炎盤１２のリング部１２２
の先端部１２２ｙ側には、第１固定部としての突出耳部
２３が固定されている。突出耳部２３は断面Ｌ字形状を
なし、ボルト挿通孔２３０を有する水平板部２３１と、
防炎盤１２に固定されている垂直板部２３２とを備えて
いる。In the vertical hole 12c of the flameproof board 12, a relatively thick seat cylinder portion 21 having a bolt insertion hole 20 and also serving as a reinforcement is fixed in a liquid-tight manner by welding or the like. Seat cylinder 21
The upper end 21m and the lower end 21n of the are protruding from the exposed surface of the flameproof board 12 although the amount is very small. Ring part 122 of flameproof board 12
A protruding ear portion 23 as a first fixing portion is fixed to the tip end 122y side of the. The protruding ear portion 23 has an L-shaped cross section, and a horizontal plate portion 231 having a bolt insertion hole 230,
The vertical plate portion 232 fixed to the flameproof board 12 is provided.
【００１４】更に図５に示す様に、防炎盤１２の脚部１
２４には第２固定部としての固定ブラケット３が設けら
れている。固定ブラケット３はステンレス鋼製であり、
防炎盤１２の外縁１２ｉから外側には突出しない非突出
型である。図４に示す様に、固定ブラケット３は、電極
保持部１１の下面１１ｅに当接して固定される水平状の
第１当接板部３０と、防炎盤１２の上面１２ｅに当接し
て固定される水平状の第２当接板部３２と、第１当接板
部３０及び第２当接板部３２を連設する垂直状の連設立
板部３３とで構成されている。第１当接板部３０はボル
ト挿通孔３０ｃをもち、第２当接板部３２はボルト挿通
孔３２ｃをもつ。Further, as shown in FIG. 5, the leg portion 1 of the flameproof board 12
A fixing bracket 3 as a second fixing portion is provided at 24. The fixing bracket 3 is made of stainless steel,
It is a non-projecting type that does not project outward from the outer edge 12i of the flameproof board 12. As shown in FIG. 4, the fixing bracket 3 abuts on the lower surface 11e of the electrode holding portion 11 and is fixed to the horizontal first abutting plate portion 30 and the upper surface 12e of the flameproof board 12 to affix. The horizontal second contact plate portion 32 and the vertical continuous connection plate portion 33 that connects the first contact plate portion 30 and the second contact plate portion 32 continuously. The first contact plate portion 30 has a bolt insertion hole 30c, and the second contact plate portion 32 has a bolt insertion hole 32c.
【００１５】そして図１に示す様に、突出耳部２３のボ
ルト挿通孔２３０にボルト２３５を挿通してナット２３
６を締めることにより、防炎盤１２のリング部１２２の
先端部は電極保持部１１に固定されている。また図４に
示す様に、座筒部２１のボルト挿通孔２０にボルト２０
０を挿通しナット２０２を締めることにより、固定ブラ
ケット３は防炎盤１２に固定され、更に、固定ブラケッ
ト３のボルト挿通孔３０ｃにボルト２４０を挿通して締
めることにより、防炎盤１２の脚部１２４は電極保持部
１１の下面１１ｅに固定されている。これにより防炎盤
１２は電極保持部１１の下面１１ｅに対面する様に保持
されている。Then, as shown in FIG. 1, the bolt 235 is inserted into the bolt insertion hole 230 of the protruding ear portion 23 to insert the nut 23.
By tightening 6, the tip of the ring portion 122 of the flameproof board 12 is fixed to the electrode holding portion 11. Further, as shown in FIG. 4, the bolt 20 is inserted into the bolt insertion hole 20 of the seat tube portion 21.
The fixing bracket 3 is fixed to the flameproof board 12 by inserting 0 through the nut 202, and further, the bolt 240 is inserted into the bolt insertion hole 30c of the fixing bracket 3 and tightened so that the leg of the flameproof board 12 is secured. The portion 124 is fixed to the lower surface 11e of the electrode holding portion 11. Thereby, the flameproof board 12 is held so as to face the lower surface 11e of the electrode holding portion 11.
【００１６】この様に防炎盤１２を保持した状態におい
て、防炎盤１２の上面１２ｅと電極保持部１１の下面１
１ｅとの間に隙間３９が形成されている。隙間３９には
工具を挿入するのが容易となり、ボルト２００、２４０
の脱着が容易となる。また隙間３９は空気断熱層として
も機能するので、電極保持部１１に対する保護性が増
す。In the state where the flameproof board 12 is held in this manner, the upper surface 12e of the flameproof board 12 and the lower surface 1 of the electrode holding portion 11 are held.
A gap 39 is formed between it and 1e. It becomes easy to insert a tool into the gap 39, and the bolts 200, 240
Can be easily attached and detached. Further, since the gap 39 also functions as an air heat insulating layer, the protection property for the electrode holding portion 11 is increased.
【００１７】更に図６に示す様に固定台５には昇降部６
が矢印Ｙ１、Ｙ２方向に昇降可能に保持されている。昇
降部６には上記した電極装置１が固定されている。そし
て固定台５に固定したウィンチ５０が一方向に作動する
と、ワイヤ５２を介して昇降部６の縦軸部６ａが下降
し、電極装置１ひいては黒鉛電極棒１０が下降する。こ
れにより取鍋の蓋の電極挿入口に黒鉛電極棒１０の下端
が挿通され、黒鉛電極棒１０の下端は取鍋の金属溶湯に
対面する。下降量、即ち黒鉛電極棒１０の下端と金属溶
湯との距離は適宜選択される。なおウィンチ５０が他方
向に作動すると、黒鉛電極棒１０が上昇する。Further, as shown in FIG.
Is held so that it can be moved up and down in the directions of the arrows Y1 and Y2. The electrode device 1 described above is fixed to the elevating part 6. When the winch 50 fixed to the fixed base 5 operates in one direction, the vertical axis portion 6a of the elevating part 6 descends via the wire 52, and the electrode device 1 and thus the graphite electrode rod 10 descend. As a result, the lower end of the graphite electrode rod 10 is inserted into the electrode insertion opening of the lid of the ladle, and the lower end of the graphite electrode rod 10 faces the molten metal of the ladle. The descending amount, that is, the distance between the lower end of the graphite electrode rod 10 and the molten metal is appropriately selected. When the winch 50 operates in the other direction, the graphite electrode rod 10 rises.
【００１８】昇降台６にはシリンダ５５が配置されてい
る。シリンダ５５のロッド５５ｅは作動レバー１７２に
連設されており、シリンダ５５の駆動に伴い作動レバー
１７２が作動し、前記クランパー１７が作動する。な
お、黒鉛電極棒１０と溶湯との間で発生するアークによ
り溶湯は昇熱される。このとき、取鍋の溶湯面に浮んで
いるスラグにより、溶湯は精錬され、成分調整される。A cylinder 55 is arranged on the lift table 6. The rod 55e of the cylinder 55 is connected to the operating lever 172, and the operating lever 172 operates in accordance with the driving of the cylinder 55, and the clamper 17 operates. The molten metal is heated by the arc generated between the graphite electrode rod 10 and the molten metal. At this time, the molten metal is refined by the slag floating on the molten metal surface of the ladle, and the components are adjusted.
【００１９】さて本実施例の取鍋精錬電極装置では、上
記した構成の１組の電極装置１を３組用い、図５に示す
様に３組近接させて構成されている。３本の黒鉛電極棒
１０の軸芯Ａ１は、従来と同様に、円弧中心Ｐ１の周り
の仮想円軌跡Ｐ３にそってかつ正三角形を構成する様に
均等間隔で配置されている。但し図５に示す様に防炎盤
１２の側面部には、従来使用されていた『突出型』の突
出耳部９０１ではなく、防炎盤１２の外縁１２ｉから外
方には突出しない『非突出型』の固定ブラケット３が使
用されている。そのため、隣設する防炎盤１２間の距離
Ｌ４を所要量確保しつつ仮想円軌跡Ｐ３の直径Ｄ２を小
さくすることができる。具体的には直径１４インチ（３
５６ｍｍ）の黒鉛電極棒１０を用いる場合において、Ｐ
ＣＤ（直径）は従来７５０ｍｍ程度であったものが、本
実施例では６９５ｍｍ程度となった。よって、金属溶湯
を貯溜した取鍋に内張されている耐火物層を黒鉛電極棒
１０からそのぶん遠ざけることができ、取鍋の耐火物層
の損傷抑制、耐火物の長寿命化、金属溶湯の清浄化や高
品質化に貢献できる。In the ladle refining electrode device of this embodiment, three sets of the above-configured electrode device 1 are used, and three sets are arranged close to each other as shown in FIG. The axes A1 of the three graphite electrode rods 10 are arranged at equal intervals along the virtual circle locus P3 around the arc center P1 and forming an equilateral triangle, as in the conventional case. However, as shown in FIG. 5, the side surface of the flameproof board 12 does not protrude outward from the outer edge 12i of the flameproof board 12 instead of the "protruding" protruding ear 901 which is conventionally used. A "protruding" fixing bracket 3 is used. Therefore, it is possible to reduce the diameter D2 of the virtual circle locus P3 while securing a required amount of the distance L4 between the flameproof boards 12 adjacent to each other. Specifically, the diameter is 14 inches (3
56 mm) graphite electrode rod 10
The CD (diameter) was about 750 mm in the past, but was about 695 mm in this embodiment. Therefore, the refractory layer lined in the ladle that stores the molten metal can be moved away from the graphite electrode rod 10 by that amount, and damage to the refractory layer of the ladle can be suppressed, the life of the refractory can be extended, and the molten metal can be prevented. It can contribute to the purification and quality improvement.
【００２０】なお、本例では（ＰＣＤ／黒鉛電極棒径）
の値は（６９５／３５６）＝１．９５であり、２以下に
することができた。 （他の例）上記した実施例では防炎盤１２の先端部には
突出耳部２３が設けられているが、これに限らず固定ブ
ラケット３と同じ形態のものを採用しても良い。In this example, (PCD / graphite electrode rod diameter)
The value of was (695/356) = 1.95, and could be 2 or less. (Other example) In the above-described embodiment, the protruding ear portion 23 is provided at the tip of the flameproof board 12, but the present invention is not limited to this, and the same shape as the fixed bracket 3 may be adopted.
【００２１】[0021]
【発明の効果】本発明の装置によれば、防炎盤の側面部
には、従来使用されていた『突出型』の突出耳部ではな
く、防炎盤の外縁から外方には突出しない『非突出型』
の固定部が使用されている。そのため、隣設する防炎盤
間の距離を確保しつつ仮想円軌跡（ＰＣＤ）の径を小さ
くすることができる。そのため溶湯を貯溜した取鍋の耐
火物層を黒鉛電極棒から遠ざけるのに有利となり、取鍋
の耐火物層の損傷抑制、耐火物の長寿命化、金属溶湯の
清浄化に貢献できる。According to the apparatus of the present invention, the side portion of the flameproof board does not project outward from the outer edge of the flameproof board, instead of the "protruding" protruding ear portion that has been conventionally used. "Non-protruding type"
The fixed part of is used. Therefore, it is possible to reduce the diameter of the virtual circle locus (PCD) while ensuring the distance between the adjacent flameproof boards. Therefore, it is advantageous to keep the refractory layer of the ladle in which the molten metal is stored away from the graphite electrode rod, and it is possible to suppress damage to the refractory layer of the ladle, extend the life of the refractory, and clean the molten metal.
【図１】電極保持部付近の要部の断面図である。FIG. 1 is a cross-sectional view of a main part near an electrode holding part.
【図２】防炎盤の平面図である。FIG. 2 is a plan view of a flameproof board.
【図３】防炎盤の断面図である。FIG. 3 is a sectional view of a flameproof board.
【図４】固定ブラケット付近の断面図である。FIG. 4 is a sectional view of the vicinity of a fixed bracket.
【図５】黒鉛電極棒及び防炎盤の配置関係を示す平面図
である。FIG. 5 is a plan view showing a positional relationship between a graphite electrode rod and a flameproof board.
【図６】昇降部付近の側面図である。FIG. 6 is a side view of the vicinity of a lifting unit.
【図７】従来技術に係り、黒鉛電極棒及び防炎盤の配置
関係を示す平面図である。FIG. 7 is a plan view showing a positional relationship between a graphite electrode rod and a flameproof board according to a conventional technique.
【図８】従来技術に係り、防炎盤の取付構造の断面にし
て示す側面図である。FIG. 8 is a side view showing a cross section of a flameproof board mounting structure according to a conventional technique.
図中、１は電極装置、１０は黒鉛電極棒、１１は電極保
持部、１２は防炎盤、１２ｉは外縁、３は固定ブラケッ
ト、３０は第１当接板部、３２は第２当接板部、３３は
連設立板部を示す。In the figure, 1 is an electrode device, 10 is a graphite electrode rod, 11 is an electrode holding part, 12 is a flameproof board, 12i is an outer edge, 3 is a fixed bracket, 30 is a first contact plate, and 32 is a second contact. A plate portion, 33 indicates a serially established plate portion.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 葛西 龍男 愛知県東海市荒尾町ワノ割１番地 愛知製 鋼株式会社内 (72)発明者 木村 龍己 愛知県東海市荒尾町ワノ割１番地 愛知製 鋼株式会社内 (72)発明者 伊藤 清春 福岡県北九州市戸畑区大字中原46番地の59 新日本製鐵株式会社機械・プラント事業 部内 (72)発明者 小永吉 稔 福岡県北九州市戸畑区大字中原46番地の59 日鐵プラント設計株式会社内 (72)発明者 内田 正裕 福岡県北九州市戸畑区大字中原46番地の59 日鐵プラント設計株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuo Kasai 1 Wanowari, Arao-cho, Tokai-shi, Aichi Aichi Steel Co., Ltd. (72) Inventor Tatsumi Kimura Wano-wari, Arao-cho, Tokai, Aichi Aichi Steel Co., Ltd. (72) Inventor Kiyoharu 59 Nakahara 46, Tobata-ku, Kitakyushu, Fukuoka Prefecture 59 Nippon Steel Co., Ltd., Machinery & Plant Division (72) Minoru Konagakichi Nakahara, Tobata-ku, Kitakyushu, Fukuoka Prefecture At 59 Nippon Steel Plant Design Co., Ltd. at No. 46 (72) Inventor Masahiro Uchida Inside 59 Nippon Steel Plant Design Co., Ltd. at Nakahara, Tobata-ku, Kitakyushu, Fukuoka Prefecture
Claims (1)
る黒鉛電極棒を保持する電極保持部と、黒鉛電極棒が挿
通される電極挿通孔を有し該電極保持部の下面に対向し
て配置された防炎盤と、該防炎盤の先端部を該電極保持
部に固定する第１固定部及び該防炎盤の側面部を該電極
保持部に固定する第２固定部とを備えた１組の電極装置
を用い、 該電極装置を３組近接させて構成され、各該黒鉛電極棒
の軸芯が仮想円軌跡にそって配置された取鍋精錬電極装
置において、 該第１固定部及び該第２固定部のうち少なくとも第２固
定部は、 該電極保持部の下面に当接して固定される第１当接板部
と、該防炎盤の上面に当接して固定される第２当接板部
と、該第１当接板部及び該第２当接板部を連設すると共
に該防炎盤の上面と該電極保持部の下面との間に隙間を
形成する連設立板部とで構成され、 該第１当接板部、該第２当接板部及び該連設板部は、該
防炎盤の外縁から外側に突出していない構成とされ、該
仮想円軌跡の径を小さくしたことを特徴とする取鍋精錬
電極装置。1. An electrode holding portion for holding a graphite electrode rod for generating an arc for heating a melting material in a ladle, and an electrode insertion hole through which the graphite electrode rod is inserted, the lower surface of the electrode holding portion being opposed to the electrode holding portion. And a first fixing portion for fixing a tip portion of the flameproof board to the electrode holding portion and a second fixing portion for fixing a side surface portion of the flameproof board to the electrode holding portion. A ladle refining electrode device in which three sets of the electrode devices are arranged close to each other, and the axis of each graphite electrode rod is arranged along a virtual circle locus. At least a second fixing portion of the first fixing portion and the second fixing portion is fixed by abutting on a lower surface of the electrode holding portion, that is, a first contact plate portion and an upper surface of the flameproof board. Second contact plate portion, the first contact plate portion and the second contact plate portion are continuously provided, and the upper surface of the flameproof board and the lower surface of the electrode holding portion are formed. And the continuous contact plate part that forms a gap between the first contact plate part, the second contact plate part and the continuous plate part projecting outward from the outer edge of the flameproof board. A ladle refining electrode device characterized in that the diameter of the virtual circular locus is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5263719A JP2984173B2 (en) | 1993-10-21 | 1993-10-21 | Ladle refining electrode device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5263719A JP2984173B2 (en) | 1993-10-21 | 1993-10-21 | Ladle refining electrode device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07120172A true JPH07120172A (en) | 1995-05-12 |
| JP2984173B2 JP2984173B2 (en) | 1999-11-29 |
Family
ID=17393365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5263719A Expired - Fee Related JP2984173B2 (en) | 1993-10-21 | 1993-10-21 | Ladle refining electrode device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2984173B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020066786A (en) * | 2018-10-26 | 2020-04-30 | 日本製鉄株式会社 | Ladle refining method of molten steel |
| JP2020066776A (en) * | 2018-10-25 | 2020-04-30 | 日本製鉄株式会社 | Ladle refining method of molten steel |
| JP2020066787A (en) * | 2018-10-26 | 2020-04-30 | 日本製鉄株式会社 | Ladle refining method of molten steel |
-
1993
- 1993-10-21 JP JP5263719A patent/JP2984173B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020066776A (en) * | 2018-10-25 | 2020-04-30 | 日本製鉄株式会社 | Ladle refining method of molten steel |
| JP2020066786A (en) * | 2018-10-26 | 2020-04-30 | 日本製鉄株式会社 | Ladle refining method of molten steel |
| JP2020066787A (en) * | 2018-10-26 | 2020-04-30 | 日本製鉄株式会社 | Ladle refining method of molten steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2984173B2 (en) | 1999-11-29 |
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