JPS586876B2 - Hot repair method for openings in refractory containers - Google Patents
Hot repair method for openings in refractory containersInfo
- Publication number
- JPS586876B2 JPS586876B2 JP17262279A JP17262279A JPS586876B2 JP S586876 B2 JPS586876 B2 JP S586876B2 JP 17262279 A JP17262279 A JP 17262279A JP 17262279 A JP17262279 A JP 17262279A JP S586876 B2 JPS586876 B2 JP S586876B2
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- opening
- gas
- repair
- openings
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【発明の詳細な説明】
本発明は耐火物容器の開口部の熱間補修方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for hot repairing an opening in a refractory container.
溶融金属容器の如き耐火物容器の開口部、たとえば取鍋
の羽口、真空脱ガス容器のガス吹込み口、底吹き転炉の
ガス吹込み口等の開口部は溶触金属の流通あるいは、ガ
スバブルによる侵食力の増加等によって高耐用性が要求
されるばかりでなく、開口部形状を正常に保つ必要があ
る。Openings in refractory containers such as molten metal containers, such as the tuyere of a ladle, the gas inlet of a vacuum degassing container, and the gas inlet of a bottom blowing converter, are used to prevent the flow of molten metal or gas bubbles. Not only is high durability required due to the increase in erosional force caused by this, but it is also necessary to maintain the normal shape of the opening.
従って該開口部が損傷された場合に、その補修にあたり
、従来の湿式不定形耐火物の吹付け、流し込み等の施工
法では十分な耐用が得られていないし、又、開口部をふ
さぐことなく熱間で補修することは困難であるから、容
器を完全に冷却した後、損傷部位を積替えていた。Therefore, when the opening is damaged, conventional construction methods such as spraying and pouring of wet monolithic refractories do not provide sufficient durability when repairing the damage. Since it would be difficult to repair the damaged parts in between, the damaged parts were transferred after the containers had completely cooled down.
しかしながら、このような積替え方法によるときは、補
修に要する時間と経費がかかりすぎるという難点がある
。However, when using such a transshipment method, there is a drawback that the time and cost required for repair are too high.
本発明の目的とするところは、かかる現状に鑑みて、補
修に要する時間と経費を節減すべく、補修すべき耐火物
容器を冷却することなしに熱間で、損傷開口部を緻密に
かつ、高い面精度を以って補修出来る熱間補修方法を提
供しようとするものである。In view of the current situation, it is an object of the present invention, in order to reduce the time and cost required for repair, to precisely close and close the damaged openings in a hot refractory container to be repaired without cooling it. The purpose is to provide a hot repair method that can perform repairs with high surface accuracy.
かかる本発明の目的は、鉄皮に耐火物を内張してなる耐
火物容器の開口部における内張耐火物損傷部を補修する
にあたり、前記開口部の鉄皮側から気体を噴入しながら
、之に対向して内張耐火物側から耐火物を溶射し肉盛す
ることを特徴とする耐火物容器の開口部の熱間補修方法
によって達成される。An object of the present invention is to repair a damaged part of the refractory lining at the opening of a refractory container made of a refractory lined with an iron shell, while injecting gas from the iron shell side of the opening. This is achieved by a hot repair method for the opening of a refractory container, which is characterized by thermally spraying and overlaying the refractory from the lining refractory side opposite to the above.
本発明の実施に際して、鉄皮外部からの気体吹込みのた
めの装置は、耐火物容器との脱着部から、吹込み気体が
洩れることなく完全にシールされ、開口部断面方向で均
一な流れが得られる構造とする。In carrying out the present invention, the device for blowing gas from outside the shell is completely sealed without leaking the gas from the attachment/detachment part to the refractory container, and the flow is uniform in the cross-sectional direction of the opening. The structure obtained is as follows.
前記した気体吹込みの条件は、補修に用いる溶射バーナ
ーの能力によって異なるが、通常１〜２ｋｇ／ｃｍ’の
圧力で気体流量は、溶射バーナー燃焼ガス量の１／１０
〜１／５が望ましい。The gas injection conditions described above vary depending on the capacity of the thermal spray burner used for repair, but the gas flow rate is usually 1/10 of the combustion gas amount of the thermal spray burner at a pressure of 1 to 2 kg/cm'.
~1/5 is desirable.
なぜなら、吹込みガス圧あるいはガス量が多い場合は、
溶射バーナーの燃焼ガス流れ、溶融粉末流れに害をおよ
ぼすからである。This is because if the blown gas pressure or gas amount is large,
This is because it harms the combustion gas flow and molten powder flow of the thermal spray burner.
吹込気体としては、通常空気を用いるが、特に脱ガス設
備のように環流ガスとして事前に開口部までの配管が施
されている場合は、アルゴン、窒素等の気体を用いても
差し支えない。Air is usually used as the blown gas, but gases such as argon and nitrogen may also be used, especially in cases where piping has been provided in advance to the opening as a reflux gas, such as in degassing equipment.
又、燃焼ガス温度を低下させないようにする必要がある
場合は、コークス炉ガス、天然ガス等の可燃ガスを用い
てもよい。Furthermore, if it is necessary to prevent the combustion gas temperature from decreasing, combustible gas such as coke oven gas or natural gas may be used.
本発明の実施の態様を第１図に示す。An embodiment of the present invention is shown in FIG.
図において１は耐火物容器の鉄皮、２は耐火物内張、３
は溶射バーナー、４は容器底部の開口部、５は開口部４
へ気体を吹込むためのアクチメント、６は溶射補修部位
である。In the figure, 1 is the steel shell of the refractory container, 2 is the refractory lining, and 3 is the refractory lining.
is a thermal spray burner, 4 is an opening at the bottom of the container, and 5 is an opening 4
actuation for blowing gas into the area, and 6 is the thermal spray repair area.
本発明を実施例にもとづいて説明する。The present invention will be explained based on examples.
実施例 １
１７０ＴＯＮ取鍋の２０チャージ使用後の損傷羽口部を
本発明により熱間補修した。Example 1 A damaged tuyere of a 170 TON ladle after 20 charges was hot repaired according to the present invention.
すなわち損傷羽口の鉄皮外部から、空気量５Ｎｍ’／Ｈ
ｒ，１ｋｇ／ｃｍ’の圧力で羽口部に吹込みながら、羽
口上部から、アルミナーシリケート系の材料を溶射吹付
けし、損傷部位を肉盛り補修した。In other words, the amount of air from the outside of the damaged tuyeres is 5Nm'/H.
While blowing into the tuyere at a pressure of r, 1 kg/cm', an alumina-silicate material was thermally sprayed from the upper part of the tuyere to repair the damaged area.
溶射吹付け肉盛り後の羽口内面は、外部からの吹込み空
気によって溶射材は付着せず、なめらかな表面状況であ
り、注入事故等のトラブルは発生ぜず、従来２０チャー
ジで羽口を取替えていたものが、本発明の熱間補修を適
用することによって４０チャージに寿命延長出来、取鍋
は羽口補修のために完全に冷却されることなく熱間回転
が可能となった。The inner surface of the tuyere after thermal spray build-up is smooth, with no thermal spray material adhering to it due to air blown in from the outside, and no injection accidents or other troubles have occurred. By applying the hot repair method of the present invention, the lifespan of the one that had been replaced was extended to 40 charges, and the ladle became capable of hot rotation without being completely cooled for tuyere repair.
実施例 ２
１５０ＴＯＮＤＨ式真空脱ガス容器スノーケル部のガス
吹込み部に、本発明法と比較法による熱間補修をおこな
った。Example 2 Hot repair was performed on the gas injection part of the snorkel part of a 150 TONDH type vacuum degassing vessel using the method of the present invention and the comparative method.
その結果を表−１および第２図に示す。The results are shown in Table 1 and Figure 2.
すなわち、１０ｍｍφのガス吹込み部の肉盛りにあたっ
て、本発明法に従って鉄皮外部から開口部へ空気を吹込
みながら対向する側から耐火物の溶射肉盛りをおこなっ
た。That is, when overlaying a 10 mm diameter gas injection part, the refractory was thermally sprayed overlay from the opposite side while blowing air into the opening from outside the shell according to the method of the present invention.
その結果、ガス吹込み部は第２図口に示すように溶射材
によって閉塞されることなく肉盛り補修が可能であった
。As a result, the gas injection part was able to be repaired by build-up without being blocked by the thermal spray material, as shown in the opening in Figure 2.
また施工部分は３０チャージ目まで健全な状態であった
。Furthermore, the constructed area remained in good condition until the 30th charge.
これに対して、鉄皮外部から開口部へ空気を吹込まない
で肉盛溶射した比較法の場合には第２図不に示す如く溶
射材によってガス吹込み部が閉塞され、ガス吹込みに支
障をきたし真空脱ガス容器として使用不可能であった。On the other hand, in the case of a comparative method in which overlay thermal spraying is performed without blowing air into the opening from the outside of the steel shell, the gas injection part is blocked by the sprayed material as shown in Figure 2 (not shown), and the gas injection is blocked. This caused problems and made it impossible to use it as a vacuum degassing container.
以上述べた如く、本発明によれば耐火物容器の開口部に
おける損傷部位を、緻密にかつ高い面精度を以って熱間
で補修できるので容器の耐用寿命の延長をはかれると共
に、補修のだめに完全に冷却する必要かないので操業に
支障を来だすことがない等の優れた効果が奏せられる。As described above, according to the present invention, the damaged part at the opening of a refractory container can be hot repaired precisely and with high surface accuracy, which not only extends the useful life of the container, but also reduces the need for repair. Since there is no need for complete cooling, excellent effects such as no hindrance to operation can be achieved.
第１図は本発明の実施の態様の説明図、第２図は本発明
法および比較法による真空脱ガス容器スノーケル部のガ
ス吹込部の一部断面を示す図でイは比較法、口は本発明
法である。
１：耐火物容器の鉄皮、２：耐火物内張、３：溶射バー
ナー、４：開口部、５：ガス吹込用アタチメント、６：
溶射補修部位、７：溶射層、８．内張母材、９：開口部
。FIG. 1 is an explanatory diagram of an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of the gas injection part of the snorkel part of a vacuum degassing container according to the present invention method and a comparative method. This is the method of the present invention. 1: Iron shell of refractory container, 2: Refractory lining, 3: Thermal spray burner, 4: Opening, 5: Attachment for gas injection, 6:
Thermal spray repair area, 7: Thermal spray layer, 8. Lining base material, 9: opening.
Claims (1)
おける内張耐火物損傷部を補修するにあたり、前記開口
部の鉄皮側から気体を噴入しながら、之に対向して内張
耐火物側から耐火物を溶射し肉盛することを特徴とする
耐火物容器の開口部の熱間補修方法。1. When repairing a damaged part of the refractory lining at the opening of a refractory container made of a refractory lined with a steel shell, while injecting gas from the shell side of the opening, A hot repair method for the opening of a refractory container, characterized by thermally spraying and overlaying a refractory from the lining refractory side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17262279A JPS586876B2 (en) | 1979-12-29 | 1979-12-29 | Hot repair method for openings in refractory containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17262279A JPS586876B2 (en) | 1979-12-29 | 1979-12-29 | Hot repair method for openings in refractory containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5697784A JPS5697784A (en) | 1981-08-06 |
| JPS586876B2 true JPS586876B2 (en) | 1983-02-07 |
Family
ID=15945281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17262279A Expired JPS586876B2 (en) | 1979-12-29 | 1979-12-29 | Hot repair method for openings in refractory containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586876B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0433332B2 (en) * | 1985-11-26 | 1992-06-02 | Sogo Kikakushitsu Yoko Jugen | |
| JPH0762701A (en) * | 1993-08-25 | 1995-03-07 | Masayuki Nakaya | Soil disposing device by means of circulating liquid |
-
1979
- 1979-12-29 JP JP17262279A patent/JPS586876B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0433332B2 (en) * | 1985-11-26 | 1992-06-02 | Sogo Kikakushitsu Yoko Jugen | |
| JPH0762701A (en) * | 1993-08-25 | 1995-03-07 | Masayuki Nakaya | Soil disposing device by means of circulating liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5697784A (en) | 1981-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2583301B2 (en) | Container for processing heated material and method for cooling the same | |
| US3211443A (en) | Metal holding receptacle | |
| JPS586876B2 (en) | Hot repair method for openings in refractory containers | |
| US3084924A (en) | Comolded magnesite-chromite tuyere | |
| US3091826A (en) | Hot top seal | |
| JP2544720Y2 (en) | Tuyere structure of gas injection nozzle for molten metal container | |
| JP2544719Y2 (en) | Tuyere structure of gas injection nozzle for molten metal container | |
| CN216115361U (en) | Smelting furnace slag hole protection device and smelting furnace with same | |
| SU576341A1 (en) | Blast furnace blowing tuyere | |
| US2894739A (en) | Ladle relining method | |
| US4488711A (en) | Treating ladle for ductile iron treatment | |
| JPH0730666Y2 (en) | Molten metal container furnace structure | |
| CN218080388U (en) | Furnace cover structure of torpedo hot metal mixer car | |
| JPH0317197Y2 (en) | ||
| US4515353A (en) | Tundish cover for ductile iron treatment | |
| JPH0140890B2 (en) | ||
| JPS6328817A (en) | Furnace body cooling method of converter | |
| JPH09241719A (en) | Nose hard ware | |
| US3804393A (en) | Steel conversion apparatus | |
| US4004792A (en) | Metallurgical furnace having fluid injection means for a melt in the furnace | |
| JPH0314890B2 (en) | ||
| JPS629316Y2 (en) | ||
| JPS6333077B2 (en) | ||
| GB191507731A (en) | Improvements in Foundry Ladles. | |
| JPS6335724A (en) | Smelting and reducing furnace |