JPH0220202Y2 - - Google Patents
Info
- Publication number
- JPH0220202Y2 JPH0220202Y2 JP7578683U JP7578683U JPH0220202Y2 JP H0220202 Y2 JPH0220202 Y2 JP H0220202Y2 JP 7578683 U JP7578683 U JP 7578683U JP 7578683 U JP7578683 U JP 7578683U JP H0220202 Y2 JPH0220202 Y2 JP H0220202Y2
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- refractories
- lining
- upper tank
- supported
- 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
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000009849 vacuum degassing Methods 0.000 claims description 7
- 230000008093 supporting effect Effects 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011823 monolithic refractory Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- -1 maguro Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Description
【考案の詳細な説明】
本考案は真空脱ガス装置の、上部槽フランジ接
合部の内張り構造に関するものである。[Detailed Description of the Invention] The present invention relates to a lining structure for an upper tank flange joint of a vacuum degassing device.
RH式、DH式などの真空脱ガス装置は、溶鋼
を減圧作用によつて真空槽に吸上げ、脱ガス・成
分調整、その他の処理を行うものである。 Vacuum degassing equipment such as the RH type and DH type sucks molten steel into a vacuum chamber by reducing pressure, and performs degassing, component adjustment, and other processing.
第１図はRH式を例にあげ、その全体図を示す
もので、大別して天蓋１、上部槽２、下部槽３お
よび浸漬管４より構成される。 FIG. 1 shows an overall diagram of the RH type, which is roughly divided into a canopy 1, an upper tank 2, a lower tank 3, and an immersion pipe 4.
直胴部の内張りは、溶鋼と接触する頻度の高い
下部が先行溶損されるため、直胴部をフランジ５
により、上部槽２と下部槽３とに分割可能とし随
時、下部槽３を補修・取換えすることが行なわれ
ている。 The lower part of the lining of the straight body is damaged first because it comes into contact with molten steel first, so the straight body is attached to the flange 5.
Therefore, the tank can be divided into an upper tank 2 and a lower tank 3, and the lower tank 3 can be repaired or replaced as needed.
第２図は、上部槽２のフランジ５接合部の内張
り構造を示したもので、鉄皮６の内周に突設した
金具７で支持された大型形状の耐火レンガ８が設
けられている。接合部の耐火物８を大型形状にし
た理由は、耐熱性に劣る金具７を炉内に露出させ
ることなく、かつ、短かい長さで内張り９を支持
するためである。 FIG. 2 shows the lining structure of the joint portion of the flange 5 of the upper tank 2, in which a large-sized refractory brick 8 supported by a metal fitting 7 protruding from the inner periphery of the iron shell 6 is provided. The reason why the refractory 8 of the joint part is made large is to support the lining 9 with a short length without exposing the metal fitting 7, which has poor heat resistance, into the furnace.
しかしながら、上部槽の内張りは下方ほど溶鋼
と接触頻度が高いこと、および下部槽との間に介
在されるモルタルが耐食性に劣ることにより、使
用後は点線１０で示す如く溶損される。また、耐
火物が大型であるために、内面と背面との温度勾
配が大きく、金具を挿入する切欠部に熱応力が集
中し、キレツが発生しやすい。一旦キレツが生じ
ると、フランジを切り離す際に内周に付着した地
金・反応層部の融着力、モルタルの接着力などで
このキレツ部分から剥離する。そこで、下端面の
損傷が進むと、新しい耐火物と、取換えることが
行なわれているが、１個30〜50Kg程度の大型形状
であるために、限られた時間内で、しかも高温下
の交換作業は非常に困難なものである。また、大
型形状であるために残存部位が多く、炉材費の面
からもきわめて非経済的であつた。 However, the lower the lining of the upper tank, the more frequently it comes into contact with molten steel, and the mortar interposed between it and the lower tank has poor corrosion resistance, so that the inner lining of the upper tank is eroded away as shown by the dotted line 10 after use. Further, since the refractory is large, there is a large temperature gradient between the inner surface and the back surface, and thermal stress is concentrated in the notch where the metal fitting is inserted, making it easy to crack. Once a crack occurs, when the flange is separated, it will peel off from the crack due to the fusion strength of the base metal/reaction layer attached to the inner periphery, the adhesive force of the mortar, etc. Therefore, when the damage to the lower end surface progresses, it is replaced with a new refractory, but since it is a large piece weighing about 30 to 50 kg, it is difficult to replace it within a limited time and under high temperatures. Replacement work is extremely difficult. Furthermore, due to its large size, many parts remain, making it extremely uneconomical in terms of furnace material costs.
本考案は、上記従来の問題を解決することを目
的としたものであり、上部槽フランジ接合部の内
張りにおいて、鉄皮内周に突設した金具で耐火物
を支持し、該耐火物の内面に炉心方向に対して下
向きの傾斜または段差から成る支持面を設け、さ
らに前記耐火物の内側に、背面に前記耐火物の支
持面と相対する傾斜または段差から成る係合面を
有する耐火物を設けたことを特徴とする真空脱ガ
ス装置である。 The purpose of this invention is to solve the above-mentioned conventional problems.In the lining of the upper tank flange joint, the refractory is supported by a metal fitting protruding from the inner periphery of the steel shell, and the inner surface of the refractory is A support surface formed of a downward slope or step with respect to the core direction is provided on the refractory, and further a refractory having an engagement surface formed of a slope or step opposite to the support surface of the refractory on the inner side of the refractory. This is a vacuum degassing device characterized by the following.
次に、図面に基づいて実施例を示し、本考案を
さらに詳述する。 Next, the present invention will be explained in further detail by showing examples based on the drawings.
第３図において、鉄皮６の内周に金具７を突設
する。該金具７が、背面に形成した凹溝状の切欠
部に挿入するように耐火物８ａを設ける。これに
より耐火物８ａは金具７に支持される。 In FIG. 3, a metal fitting 7 is provided protruding from the inner periphery of the iron skin 6. A refractory 8a is provided so that the metal fitting 7 is inserted into a groove-shaped notch formed on the back surface. Thereby, the refractory 8a is supported by the metal fitting 7.
耐火物８ａの内面を炉心方向に対して下向きに
傾斜させる。これは、その内側に設けるもう一方
の耐火物８ｂを傾斜面で支持するためである。傾
斜角度は特に限定するものではないが、60〜85゜
程度が好ましい。角度が小さにと形状的にキレツ
が生じやすく、逆に大き過ぎると支持効果がな
い。この実施例では傾斜面を直線的にしたことに
より、耐火物８ａ，８ｂの形状が単純となり、そ
の製造が比較的簡単である。 The inner surface of the refractory 8a is inclined downward with respect to the core direction. This is because the other refractory 8b provided inside the refractory is supported on the inclined surface. The angle of inclination is not particularly limited, but is preferably about 60 to 85 degrees. If the angle is small, cracks tend to occur due to the shape, and if the angle is too large, there will be no supporting effect. In this embodiment, since the inclined surfaces are straight, the shapes of the refractories 8a and 8b are simple, and their manufacture is relatively simple.
内側の耐火物８ｂは、背面を前記の傾斜面と相
対して傾斜させ、外側の耐火物８ａと密着させ
る。必要により、この密着面にはモルタルなどを
介在させる。 The inner refractory 8b has a back surface inclined opposite to the above-mentioned inclined surface, and is brought into close contact with the outer refractory 8a. If necessary, mortar or the like is interposed on this contact surface.
双方の耐火物８ａ，８ｂを合わせることで内張
りの厚さを調整する。耐火物８ａ，８ｂの厚さの
比は、特に限定するものではないが、中央部での
長さで外側８ａと内側８ｂとが、１：３〜５：１
程度、好ましくは１：1.5〜４：１でとする。 The thickness of the lining is adjusted by matching both refractories 8a and 8b. The ratio of the thicknesses of the refractories 8a and 8b is not particularly limited, but the length at the center of the outer side 8a and the inner side 8b is 1:3 to 5:1.
The ratio is preferably 1:1.5 to 4:1.
双方の耐火物８ａ，８ｂを合わせた全体形状
は、第７図のとおり従来と同様に横ゼリ形状であ
る。鉄皮６内周に沿つて築造された後は、となり
合う耐火物と互いに迫り合い、傾斜による支持と
相まつて内側の耐火物８ｂは脱落することはな
い。 The overall shape of both refractories 8a and 8b combined is a horizontal jelly shape as in the conventional case, as shown in FIG. After being constructed along the inner periphery of the steel shell 6, the refractories 8b on the inside will not fall off due to the support provided by the inclination, and the adjacent refractories approach each other.
第４図の実施例は、段差から成る支持面で内側
の耐火物８ｂを支持したものである。すなわち、
外側の耐火物８ａ内面に炉心方向に対して下向き
の段差から成る支持面を設け、さらに該耐火物８
ａの内側に、背面に前記耐火物８ａの内面と相対
する段差から成る係合面を有した耐火物８ｂを設
けたものである。ここでは、金具７を挿入する切
欠部を逆Ｌ字形にした。切欠部の形状は、本考案
では何んら限定されない。 In the embodiment shown in FIG. 4, the inner refractory 8b is supported by a support surface consisting of steps. That is,
A support surface consisting of a step facing downward in the direction of the reactor core is provided on the inner surface of the outer refractory 8a, and the refractory 8a
A refractory 8b is provided on the inside of the refractory 8b, the back surface of which has an engagement surface consisting of a step that faces the inner surface of the refractory 8a. Here, the notch into which the metal fitting 7 is inserted is shaped like an inverted L. The shape of the notch is not limited at all in the present invention.
耐火物８ａ，８ｂの材質は、例えばマグネシ
ア、マグクロ、スピネル、アルミナ、クロミア、
ジルコニアなどから選ばれる１種または２種以上
を主材とし、必要により、さらにこれに炭素、炭
化珪素、窒化珪素から選ばれる１種または２種以
上を添加してなる定形または不定形耐火物が好適
である。 The materials of the refractories 8a and 8b include, for example, magnesia, maguro, spinel, alumina, chromia,
A shaped or monolithic refractory made of one or more selected from zirconia, etc. as the main material, and, if necessary, further added with one or more selected from carbon, silicon carbide, and silicon nitride. suitable.
外側の耐火物８ａに限つていえば、溶鋼と接触
しないので上記耐火物に加え、耐スポーリング性
にすぐれていれば耐火性の低い耐火物でもよく、
例えばジルコン、およびまたはアルミナ−シリカ
質原料を主材とした定形または不定形耐火物があ
げられる。 As far as the outer refractory 8a is concerned, since it does not come into contact with molten steel, in addition to the above-mentioned refractories, a refractory with low fire resistance may be used as long as it has excellent spalling resistance.
Examples include shaped or unshaped refractories based on zircon and/or alumina-siliceous raw materials.
第５図の実施例は、外側の耐火物８ａとして不
定形耐火物とし、スタツドからなる金具７で牽引
支持する。この耐火物８ａの内面は、前記実施例
と同様に傾斜させ、内側の耐火物８ｂを支持す
る。本実施例では製造が容易な不定形耐火物を用
いたことにより、経済的に有利である。不定形耐
火物は耐食性に劣るものの、外側に位置して高温
雰囲気に接触しないため、内張りの寿命を低下さ
せることはない。また、不定形耐火物の支持は断
面積の小さいスタツド９で行なうことができ、耐
火物のキレツの発生が少ない。 In the embodiment shown in FIG. 5, a monolithic refractory is used as the outer refractory 8a, and the refractory is pulled and supported by a metal fitting 7 made of a stud. The inner surface of this refractory 8a is inclined as in the previous embodiment and supports the inner refractory 8b. This embodiment is economically advantageous because it uses a monolithic refractory that is easy to manufacture. Although monolithic refractories have poor corrosion resistance, they do not reduce the life of the lining because they are located on the outside and do not come into contact with high-temperature atmospheres. Further, the monolithic refractory can be supported by studs 9 having a small cross-sectional area, and the occurrence of cracks in the refractory is reduced.
以上の実施例ではフランジ接合部のみを大型の
耐火物８ａ，８ｂとし、それより上方は第２乃至
５図のように通常サイズの耐火物で内張りしてい
るが、上方部分にも大型の耐火物を設けてもよ
い。第６図は、フランジ接合部の耐火物８ａ，８
ｂの上方に大型の耐火物８ｃを設けた実施例であ
る。接合部の耐火物８ｂを交換した際、上方の耐
火物８ｃと接合部の耐火物８ａ，８ｂとの間に空
隙が生じやすいので、その場合は例えば図のよう
にスペース耐火物１１を介在しさせると空隙を容
易に充填できる。 In the above embodiment, only the flange joints are made of large refractories 8a and 8b, and the area above them is lined with normal-sized refractories as shown in Figures 2 to 5, but the upper part is also lined with large refractories. You can also set things up. Figure 6 shows the refractories 8a and 8 of the flange joint.
This is an embodiment in which a large refractory 8c is provided above b. When replacing the joint refractory 8b, a gap is likely to be created between the upper refractory 8c and the joint refractories 8a and 8b, so in that case, for example, a space refractory 11 may be interposed as shown in the figure. By doing so, the voids can be easily filled.
以上のように構成された上部槽フランジ接合部
の内張りは、使用後、耐火物が損傷しても、実際
に損傷された内側の耐火物のみを交換すればよ
い。従つてその分、補修に使用する耐火物の重量
が軽量となつて迅速、かつ、容易に交換すること
ができる。外側の耐火物はそのまま使用できるの
で、全部を交換する従来のものに比べて、きわめ
て経済的である。 In the lining of the upper tank flange joint configured as described above, even if the refractory is damaged after use, only the actually damaged inner refractory needs to be replaced. Therefore, the weight of the refractory used for repair becomes lighter and can be replaced quickly and easily. Since the outer refractory can be used as is, it is extremely economical compared to conventional methods that require replacing the entire refractory.
また、耐火物が長さ方向に分割されることで、
各耐火物の温度勾配が小さく、キレツが発生し難
くなると共に、一方の耐火物で生じたキレツは各
耐火物間の境界面で寸断され、大きなキレツへと
発達しない。その結果、フランジ接合部の異常溶
損やハクリがなくなり、計画的な補修が可能とな
つて真空脱ガス装置の稼動率が大巾に向上する。 In addition, by dividing the refractory in the length direction,
The temperature gradient of each refractory is small, making it difficult for cracks to occur, and cracks that occur in one refractory are broken at the interface between the refractories and do not develop into large cracks. As a result, abnormal melting and peeling of the flange joints are eliminated, making systematic repairs possible and greatly improving the operating rate of the vacuum degassing device.
なお、本考案は直胴部を上下に上部槽、中間
槽、下部槽の３分割した真空脱ガス装置のフラン
ジ接合部の内張り構造にも適応できる。 The present invention can also be applied to the lining structure of the flange joint of a vacuum degassing device in which the straight body is vertically divided into three parts: an upper tank, an intermediate tank, and a lower tank.
第１図はRH式真空脱ガス装置の全体図、第２
図、第３図、第４図、第５図及び第６図は本考案
実施例の要部タテ断面図、第７図は本考案実施例
におけるフランジ接合部の耐火物の斜視図であ
る。
１……天蓋、２……上部槽、３……下部槽、４
……浸漬管、５……フランジ、６……鉄皮、７…
…金具、８，８ａ，８ｂ，８ｃ……耐火物、９…
…内張り、１０……キレツ、１１……スペース耐
火物。
Figure 1 is an overall view of the RH vacuum degassing equipment, Figure 2
3, 4, 5, and 6 are vertical sectional views of essential parts of the embodiment of the present invention, and FIG. 7 is a perspective view of the refractory of the flange joint in the embodiment of the present invention. 1...Canopy, 2...Upper tank, 3...Lower tank, 4
...Immersion pipe, 5...Flange, 6...Iron shell, 7...
...Metal fittings, 8, 8a, 8b, 8c...Refractory, 9...
...Inner lining, 10...Kiretsu, 11...Space refractory.
Claims (1)
内周に突設した金具で耐火物を支持し、該耐火物
の内面に炉心方向に対して下向きの傾斜または段
差から成る支持面を設け、さらに前記耐火物の内
側に、背面に前記耐火物の支持面と相対する傾斜
または段差から成る係合面を有する耐火物を設け
たことを特徴とする真空脱ガス装置。 In the lining of the upper tank flange joint, a refractory is supported by metal fittings protruding from the inner periphery of the steel shell, and a supporting surface consisting of a downward slope or step with respect to the core direction is provided on the inner surface of the refractory, and the above-mentioned A vacuum degassing device characterized in that a refractory is provided inside the refractory, and the refractory has an engagement surface formed of an inclined or stepped surface facing the support surface of the refractory on its back surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7578683U JPS59181854U (en) | 1983-05-20 | 1983-05-20 | Vacuum degassing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7578683U JPS59181854U (en) | 1983-05-20 | 1983-05-20 | Vacuum degassing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59181854U JPS59181854U (en) | 1984-12-04 |
| JPH0220202Y2 true JPH0220202Y2 (en) | 1990-06-01 |
Family
ID=30205846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7578683U Granted JPS59181854U (en) | 1983-05-20 | 1983-05-20 | Vacuum degassing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59181854U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2580835Y2 (en) * | 1993-10-07 | 1998-09-17 | ハリマセラミック株式会社 | Structure of flange joint of molten metal processing equipment |
-
1983
- 1983-05-20 JP JP7578683U patent/JPS59181854U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59181854U (en) | 1984-12-04 |
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