JPH02149611A - Sleeve brick for repair - Google Patents
Sleeve brick for repairInfo
- Publication number
- JPH02149611A JPH02149611A JP30242988A JP30242988A JPH02149611A JP H02149611 A JPH02149611 A JP H02149611A JP 30242988 A JP30242988 A JP 30242988A JP 30242988 A JP30242988 A JP 30242988A JP H02149611 A JPH02149611 A JP H02149611A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve brick
- sleeve
- brick
- mortar
- tapping hole
- 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
- 239000011449 brick Substances 0.000 title claims abstract description 60
- 230000008439 repair process Effects 0.000 title claims description 15
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000010079 rubber tapping Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、転炉出鋼口等に装着する１１修用スリーブれ
んかに関し、特に補修サイクルを長期化できて操業の安
定がはかれる補修用スリーブれんかに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a 11 repair sleeve brick installed at a converter tap, etc., and in particular a repair sleeve brick that can extend the repair cycle and stabilize operations. related to
従来の技術
従来、転炉の出鋼口は、出鋼による溶損等の１員耗をパ
ッチング祠や熱間補修材を使用して補修していたが、５
〜１０チヤージ毎に補修を行わねばならなかった。Conventional technology In the past, the tapping port of a converter was repaired by patching or hot repair material to repair worn parts such as melting damage caused by tapping.
Repairs had to be made every ~10 charges.
そのため、このような補修方法では、製鋼の高生産性を
維持するのにきわめて効率が悪く、また生産性の向上を
望むことができなかった。Therefore, such a repair method is extremely inefficient in maintaining high productivity in steel manufacturing, and it has not been possible to hope for an improvement in productivity.
そこで現在では、転炉出鋼口に、一定時間に転炉内の溶
鋼を出鋼させるために補修用スリーブれんがを交換可能
に装着するようになっている。Therefore, at present, repair sleeve bricks are replaceably attached to the tap port of the converter in order to tap the molten steel in the converter for a certain period of time.
補修用スリーブれんがは短筒状のれんがを装着用パイプ
に３〜１０ケ嵌装し、孔明は用ドリルマシンで予め穿孔
した出鋼口に上記れんがを挿入して装着し、このスリー
ブれんがと穿孔した出鋼口との間にクール系焼付材を装
填し、乾燥することによって施工している。For repair sleeve bricks, 3 to 10 short cylindrical bricks are fitted into the installation pipe, and for drilling, insert and install the above bricks into the tapped hole that has been drilled in advance with a drill machine, and then drill the holes with this sleeve brick. Construction is carried out by loading cool baking material between the tap hole and drying.
発明が解決しようとする課題
上記スリーブれんが方式による転炉出鋼口は、スリーブ
れんがを無補修で１００チヤージ操業できることが特徴
とされている。しかし、現実には、２０〜３０チヤージ
で炉内側の先端部のスリーブれんかに脱落現象が発生し
、１００チヤージの無補修の操業は到底達成することが
できないものであった。Problems to be Solved by the Invention The converter tap using the sleeve brick method is characterized in that it can be operated for 100 charges without repairing the sleeve bricks. However, in reality, after 20 to 30 charges, the sleeve brick at the tip inside the furnace began to fall off, making it impossible to achieve 100 charges of operation without repair.
この脱落の原因は、マグネシア・カーボンれんがのスリ
ーブれんがの場合、成形時にれんがの表面が金型のライ
ナーと摩擦して表面の開口気孔をカーボンで塞いでしま
うことにあった。そのため、スリーブれんがと焼付材と
の焼付けが表面のみとなり、焼付材がれんがの開口気孔
へ浸入しなくてアンカー効果が生しなく、上記したよう
に短期間で脱落している。The reason for this falling-off was that in the case of sleeve bricks made of magnesia carbon bricks, the surface of the brick rubbed against the liner of the mold during molding, causing the open pores on the surface to be filled with carbon. As a result, the sleeve brick and the baking material are baked only on the surface, and the baking material does not penetrate into the open pores of the brick, resulting in no anchor effect and, as mentioned above, falls off in a short period of time.
スリーブれんがの脱落を防止するには、スリーブれんが
の形状をテーパー付としたり、スリーブれんがの外面に
凹凸を設けたりする方法が考えられる。しかし、前者の
ものでは、１５〜３０＋＋＋Ｉｉの厚ざのスリーブれん
がの場合で最大５ｗ位の差のテーパー付きしかできない
ので脱落防止の効果が少なく、また後者のものでは、加
工費用が高くなってスリーブれんがの価格が高騰する問
題があった。In order to prevent the sleeve brick from falling off, it is possible to make the shape of the sleeve brick tapered or to provide unevenness on the outer surface of the sleeve brick. However, with the former method, the sleeve bricks with a thickness of 15 to 30+++Ii can only be tapered with a maximum difference of about 5w, so they are less effective in preventing falling off, and with the latter method, the machining costs are high and the sleeve There was a problem with the rising price of bricks.
課題を解決するための手段
本発明は上記のような点に鑑みたもので、上記の課題を
解決するために、転炉出鋼口等に装着するスリブれんが
をマグネシア・カーボン質の耐火物で形成するとともに
、上記スリーブれんがの外表面に非水系レジンを含有「
るモルタルを塗布したことを特徴とする補修用スリーブ
れんがを従供するにある。Means for Solving the Problems The present invention was developed in view of the above-mentioned problems, and in order to solve the above-mentioned problems, the slab bricks to be attached to the tap port of the converter are made of magnesia-carbon refractories. At the same time, a non-aqueous resin is added to the outer surface of the sleeve brick.
The present invention provides a sleeve brick for repair, characterized in that it is coated with mortar.
作用
本発明の補修用スリーブれんがを転炉出鋼口等に装着す
ると、マグネシア・カーボン質耐火物のスリーブれんか
によって耐久性がはかれるとともに、スリーブれんがの
外表面に塗布した非水系レジン含有のモルタルの気孔に
出鋼口の開口部とスリーブれんがとの間に装填のクール
系焼付材が浸入し、アンカー効果を十分に発揮させるこ
とができてスリーブれんがの脱落防止がはかれ、所要の
目標が達成できる。また、マグネシア・カーボン質の耐
火物で形成のスリーブれんがであるにもかかわらず、表
面にモルタル塗布によってハンドリング時のｒベリ防止
がはかれる。Function: When the repair sleeve brick of the present invention is attached to a converter tap, etc., durability is ensured by the sleeve brick made of magnesia-carbon refractory, and the mortar containing non-aqueous resin applied to the outer surface of the sleeve brick is improved. The charged cool-based baking material infiltrates into the pores between the opening of the tapping port and the sleeve brick, and the anchoring effect is fully exerted, preventing the sleeve brick from falling off and achieving the desired target. It can be achieved. Furthermore, although the sleeve bricks are made of magnesia-carbon refractories, the surface is coated with mortar to prevent r-burr during handling.
実施例 以下、本発明を実施例にもとづいて説明する。Example Hereinafter, the present invention will be explained based on examples.
第１図以下は本発明の−・実施例で、転炉に実施したも
のである。補修用のスリーブれんが１は、第１図のよう
に短状筒の筒状れんが２を複数個連設して転炉３の出鋼
口４に交換可能に装着している。上記スリーブれんがｌ
は、マグネシア・カーボン質の耐火物や焼成マグネシア
耐火物で形成しているとともに、第１図、第２図のよう
にその外表面に非水系レジンのモルタル５を０．５〜１
ＯＩＩＩＩｉ位厚ざに塗布している。このモルタル５は
、粒径１ｍｍ以下の骨材を用いて開口気孔をできるだけ
大きくするようにしているとともに、作業性がよいよう
にしている。Figure 1 and the following are embodiments of the present invention, which were implemented in a converter. As shown in FIG. 1, the sleeve brick 1 for repair is a plurality of short cylindrical cylindrical bricks 2 arranged in a row, and is replaceably installed in the tapping port 4 of the converter 3. Above sleeve brick
is made of magnesia-carbon refractory or fired magnesia refractory, and as shown in Figs.
It is applied in a thick layer. This mortar 5 uses aggregate with a grain size of 1 mm or less to make the open pores as large as possible, and is also designed to have good workability.
一般に、マグネシア・カーボン質の耐火物は、高温時に
水分に反応して酸化、脆化する欠点があり、また水練り
モルタルでばマグネシア・カーボンに付着することが困
難であったが、非水系レジンのモルタル５を塗布するこ
とによってこれらの欠点を解消できる。上記非水系レジ
ンのモルタル５は、スリーブれんがｌの外表面に強固に
接着しておく必要があるので、所定の温度、時間の熱処
理を行っている０通常、ノボラッククイブのフェノール
レジンの場合では、約２００°Ｃ５３６時間以上の熱処
理が好ましいものである。In general, magnesia-carbon refractories have the disadvantage of reacting with moisture at high temperatures and becoming oxidized and brittle, and water-mixed mortar has difficulty adhering to magnesia-carbon, but non-aqueous resin These drawbacks can be overcome by applying mortar 5. The non-aqueous resin mortar 5 needs to be firmly adhered to the outer surface of the sleeve brick l, so it is heat-treated at a predetermined temperature and time.Normally, in the case of phenolic resin for novolac quives, , heat treatment at about 200° C. for 536 hours or more is preferred.
上記スリーブれんが１を出鋼口４に装着するにあっては
、第３図のようにＴ字状に形成したスリーブ装着用バイ
ブロに上記スリーブれんがｌの短状筒の筒状れんが２を
嵌入し、孔明け）′リルマシンで予め穿孔した出鋼口４
に挿入して出鋼口４の開口部とスリーブれんが１との間
にタール系等の焼付材７を充填して装着するものである
。このように施工すると、クール系焼付材７がモルタル
５の開口気孔に浸入し、十分にアンカ効果を発揮できて
スリーブれんが１を出鋼口４に強固に装着しておくこと
ができる。To attach the sleeve brick 1 to the tap hole 4, the short cylindrical brick 2 of the sleeve brick 1 is fitted into a sleeve attachment vibro formed in a T-shape as shown in Fig. 3. , drilling)' Tap hole 4 pre-drilled with a drill machine
A baking material 7 such as a tar type material is filled between the opening of the tap hole 4 and the sleeve brick 1, and then installed. When the construction is performed in this manner, the cool baking material 7 penetrates into the open pores of the mortar 5, and a sufficient anchoring effect can be exerted, so that the sleeve brick 1 can be firmly attached to the tap hole 4.
上記のようにしてスリーブれんがをＡ社の２７０トン転
炉の出鋼口に使用した結果、従来問題となっていたスリ
ーブれんがの脱落現象は全く発生せず、目標の１００チ
ヤージの連続操業を達成することができた。As a result of using the sleeve bricks at the tapping port of Company A's 270-ton converter as described above, the falling-off phenomenon of sleeve bricks, which had been a problem in the past, did not occur at all, and the target continuous operation of 100 charges was achieved. We were able to.
また、スリーブれんがをマグネシア・カーボン系とすれ
ば、ハンドリング時にすべり防止の安全対策が必要であ
ったが、上記のようにモルタルの塗布によってすべりも
一挙に解消することができたものである。Furthermore, if the sleeve bricks were made of magnesia/carbon type, safety measures would have been required to prevent slipping during handling, but slipping could be eliminated at once by applying mortar as described above.
以上では、スリーブれんがを直筒状のものとしたが、必
要によりテーパー付のものとするこもできるものである
。In the above description, the sleeve brick has a straight cylindrical shape, but it can also be tapered if necessary.
なお、本発明は転炉出鋼口の他に、タンデイツシュ、取
鍋等の出鋼口等についても同様にして適用できるもので
ある。It should be noted that the present invention can be similarly applied to tapping ports of tundishes, ladles, etc., in addition to the taps of converters.
発明の効果
以上のように本発明にあっては、マグネシア・カポン質
の耐火物で形成のスリーブれんがであるにもかかわらず
、外表面に塗布した非水系レジン含有のモルタルによっ
て安価にかつ簡単に焼付月とのアンカー効果を十分に発
揮するようにでき、スリーブれんがの脱落現象をＵノ止
できて、耐久性よく目標の１００チヤジ連続操業が可能
となったものである。また、マグネノア・カー−ボン質
の耐火物のスリーブれんがであるにもかかわらず、モル
タルの塗布によってハンドリング時のｒべり防止がはか
れ、安全にかつ迅速にスリーブれんがを搬送することが
できるものである。Effects of the Invention As described above, in the present invention, although the sleeve brick is made of magnesia-capone refractory, it can be easily and inexpensively coated with mortar containing a non-aqueous resin applied to the outer surface. The anchor effect with the baked moon can be sufficiently exerted, the phenomenon of sleeve bricks falling off can be prevented, and the target continuous operation of 100 turns can be achieved with good durability. In addition, even though the sleeve bricks are made of magnenor carbon refractories, the mortar coating prevents them from slipping during handling, allowing the sleeve bricks to be transported safely and quickly. be.
第１図は本発明の一実施例の転炉出鋼口に装着状態の−
・部省略した側断面図、第２図は同上のスリーブれんが
の平面図、第３図は同上のスリーブれんが装着説明用断
面図である。
Ｉ・・スリーブれんが、３・・・転炉、４・・・出鋼口
、５・・・モルタル、７・・・焼付祠。
出願人 川崎炉材株式会社
代理人 弁理士 森 本 邦 章
第２図
第１
第３図Fig. 1 shows the - attached to the tap hole of a converter furnace according to an embodiment of the present invention.
・A side sectional view with parts omitted, FIG. 2 is a plan view of the sleeve brick shown above, and FIG. 3 is a sectional view for explaining how to attach the sleeve brick shown above. I... Sleeve brick, 3... Converter, 4... Steel tap, 5... Mortar, 7... Baking shrine. Applicant Kawasaki Rozai Co., Ltd. Agent Patent Attorney Kuni Morimoto Figure 2 Figure 1 Figure 3
Claims (1)
シア・カーボン質の耐火物で形成するとともに、上記ス
リーブれんがの外表面に非水系レジンを含有するモルタ
ルを塗布したことを特徴とする補修用スリーブれんが。(1) A repair characterized in that a sleeve brick to be attached to a converter tap, etc. is made of a magnesia-carbon refractory, and the outer surface of the sleeve brick is coated with mortar containing a non-aqueous resin. Sleeve brick for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30242988A JPH02149611A (en) | 1988-11-30 | 1988-11-30 | Sleeve brick for repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30242988A JPH02149611A (en) | 1988-11-30 | 1988-11-30 | Sleeve brick for repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02149611A true JPH02149611A (en) | 1990-06-08 |
Family
ID=17908817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30242988A Pending JPH02149611A (en) | 1988-11-30 | 1988-11-30 | Sleeve brick for repair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02149611A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100393759B1 (en) * | 1999-08-26 | 2003-08-06 | 주식회사 포스코 | A tap hole sleeve and method of establishing thereof |
| KR20040023910A (en) * | 2002-09-12 | 2004-03-20 | 주식회사 포스코 | Sleeve for reinforcement and exchange of converter tapping hole sleeve |
| KR100815767B1 (en) * | 2001-08-28 | 2008-03-20 | 주식회사 포스코 | An apparatus for reinforcing sleeve for converter tapping hole |
| KR100851482B1 (en) * | 2001-12-05 | 2008-08-08 | 주식회사 포스코 | Nozzle for converter steel tap hole |
-
1988
- 1988-11-30 JP JP30242988A patent/JPH02149611A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100393759B1 (en) * | 1999-08-26 | 2003-08-06 | 주식회사 포스코 | A tap hole sleeve and method of establishing thereof |
| KR100815767B1 (en) * | 2001-08-28 | 2008-03-20 | 주식회사 포스코 | An apparatus for reinforcing sleeve for converter tapping hole |
| KR100851482B1 (en) * | 2001-12-05 | 2008-08-08 | 주식회사 포스코 | Nozzle for converter steel tap hole |
| KR20040023910A (en) * | 2002-09-12 | 2004-03-20 | 주식회사 포스코 | Sleeve for reinforcement and exchange of converter tapping hole sleeve |
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