JPH0721561Y2 - Gas blow plug - Google Patents
Gas blow plugInfo
- Publication number
- JPH0721561Y2 JPH0721561Y2 JP1989151913U JP15191389U JPH0721561Y2 JP H0721561 Y2 JPH0721561 Y2 JP H0721561Y2 JP 1989151913 U JP1989151913 U JP 1989151913U JP 15191389 U JP15191389 U JP 15191389U JP H0721561 Y2 JPH0721561 Y2 JP H0721561Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- refractory material
- plug
- columnar body
- blowing
- 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 - Lifetime
Links
Landscapes
- Furnace Charging Or Discharging (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、製錬分野の溶融金属攪拌用のガス吹き込みプ
ラグに関する。TECHNICAL FIELD The present invention relates to a gas blowing plug for stirring molten metal in the smelting field.
従来の技術 近年、鋼材の品質を向上するために、溶融金属容器の溶
融金属中にアルゴンや窒素等の不活性ガスを吹き込ん
で、非金属介在物を除去することが増加している。2. Description of the Related Art In recent years, in order to improve the quality of steel products, it has been increasing to remove non-metallic inclusions by blowing an inert gas such as argon or nitrogen into the molten metal in a molten metal container.
従来の第２図のように外側を緻密質耐火物２で囲み、そ
の内側に多孔質耐火物３を内装したガス吹き込みプラグ
１は、広く使用されていて、多孔質耐火物３の上面全体
から溶融金属中へガスを吹き込むことができて攪拌効果
がよいものであるが、外側の緻密質耐火物２と内側の多
孔質耐火物３との上端面が同一の平面状であった。As shown in FIG. 2 of the related art, a gas blow-in plug 1 in which the outer side is surrounded by a dense refractory material 2 and the porous refractory material 3 is provided inside thereof is widely used. Although the gas can be blown into the molten metal and the stirring effect is good, the upper end surfaces of the dense refractory material 2 on the outside and the porous refractory material 3 on the inside have the same flat shape.
考案が解決しようとする課題 そのため、従来の上記ガス吹き込みプラグの使用初期に
おいては、通気性確保のために多孔質耐火物の表面を酸
素洗浄する際に、火種となる溶鋼がガスを吹き込む多孔
質耐火物の上にたまりにくく、容易に酸素洗浄できなか
った。Therefore, in the early stage of using the conventional gas blowing plug, when the surface of the porous refractory is cleaned with oxygen in order to ensure air permeability, the molten steel, which becomes a fire source, blows gas into the porous structure. It was difficult to collect oxygen on the refractory and could not be easily cleaned with oxygen.
課題を解決するための手段 本考案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、周囲に緻密質耐火物を筒状に配設し、
その内側に多孔質耐火物のガス吹き込み柱状体を内装し
たガス吹き込みプラグであって、上記内側の多孔質耐火
物のガス吹き込み柱状体の上端の全面を、その外側の緻
密質耐火物の上面より５〜20mm位低く段差をつけて内装
したことを特徴とするガス吹き込みプラグを提供するに
ある。Means for Solving the Problems The present invention has been made in view of the above points, and in order to solve the above problems, a dense refractory is arranged in a cylindrical shape,
A gas-blowing plug having a gas-blown columnar body of a porous refractory material inside thereof, wherein the entire upper surface of the gas-blown columnar body of the above-mentioned porous refractory material is arranged from the upper surface of the dense refractory body outside thereof. An object is to provide a gas injection plug characterized by being stepped in by a step as low as 5 to 20 mm.
作用 本考案のガス吹き込みプラグを溶融金属容器に装着して
使用すると、初期段階において段差のついた内側の多孔
質耐火物のガス吹き込み柱状体の上端面の全面にわたっ
て溶融がたまり、酸素洗浄を容易に行える。また、内側
の多孔質耐火物のガス吹き込み柱状体は単純な柱状体な
ので、製造しやすいものである。Function When the gas blowing plug of the present invention is used by mounting it on a molten metal container, melting is accumulated over the entire upper end surface of the gas blowing columnar body of the stepped inner porous refractory in the initial stage, and oxygen cleaning is facilitated. You can do it. Further, since the gas blown columnar body of the porous refractory material inside is a simple columnar body, it is easy to manufacture.
実施例 以下、本考案を実施例にもとづいて説明する。Embodiment Hereinafter, the present invention will be described based on an embodiment.
第１図は、本考案の一実施例である。溶融金属攪拌用の
ガス吹き込みプラグ１は、第１図のように上部にいくに
したがって断面が小さくなった台錐形状に構成してい
て、外周部に鉄板のメタルケース４を設け、その内部に
緻密質耐火物２を円筒状に配設し、その内側に多孔質耐
火物のガス吹き込み柱状体５を内装している。FIG. 1 shows an embodiment of the present invention. The gas injection plug 1 for agitating the molten metal has a trapezoidal shape in which the cross section becomes smaller toward the upper part as shown in FIG. A dense refractory 2 is arranged in a cylindrical shape, and a gas-injected columnar body 5 of a porous refractory is provided inside thereof.
上記多孔質耐火物のガス吹き込み柱状体５の上端面は、
図のように外側の緻密質耐火物２の上端面よりも５〜20
mm位低く、段差６をつけて内装し、使用初期に酸素洗浄
を容易に行えるようにしている。７はガス供給管であ
る。The upper end surface of the gas-injected columnar body 5 of the porous refractory material is
As shown in the figure, it is 5 ~ 20
It has a height of about 6 mm and is equipped with a step 6 so that oxygen cleaning can be performed easily at the beginning of use. 7 is a gas supply pipe.
使用例 上記した本考案のガス吹き込みプラグを従来のものと比
較するため、50トン溶鋼の取鍋に設置して、連続21回の
ガス吹き込みと酸素洗浄を行った。Example of use In order to compare the above-mentioned gas blowing plug of the present invention with a conventional one, it was installed in a ladle of 50 ton molten steel, and gas was continuously blown 21 times and oxygen cleaning was performed.
その結果は、本考案のものでは、すべて問題なく酸素洗
浄およびガス吹き込みが行えた。従来のものでは、１回
目から５回目までの計５回が、うまく酸素洗浄できなか
った。As a result, with the present invention, oxygen cleaning and gas blowing could be performed without any problems. In the conventional case, the oxygen cleaning could not be successfully performed 5 times in total from the 1st time to the 5th time.
このように多孔質耐火物のガス吹き込み柱状体の上端面
を５〜20mm位低くしておくと、、使用初期から十分に性
能を発揮できるとともに外側の緻密質耐火物の上端面に
対して少しずつ先行して溶損していくため、円滑に連続
的にガス吹き込みを行うことができるものである。By lowering the upper end surface of the gas-injected columnar body of the porous refractory material by about 5 to 20 mm, the performance can be sufficiently exhibited from the beginning of use and the upper end surface of the dense refractory material can be slightly Since it is melted and damaged in advance, the gas can be smoothly and continuously blown.
なお、ガス吹き込み柱状体の段差は５〜10mm位の少ない
方がガス吹き込みプラグの寿命を長くできて好ましく、
20mmよりも深くするとガス吹き込みプラグの寿命を短く
して好ましくない。In addition, it is preferable that the step of the gas-blowing columnar body is as small as about 5 to 10 mm because the life of the gas-blowing plug can be extended,
If it is deeper than 20 mm, the life of the gas injection plug is shortened, which is not preferable.
上記実施例では、台錐形状の単体のガス吹き込みプラグ
を示したが、直方体形状等のブロック体に１ないし複数
個を一体的に装着したガス吹き込みプラグについても適
用できるものである。In the above embodiment, the trapezoidal single gas blowing plug is shown, but the present invention can also be applied to a gas blowing plug in which one or more are integrally attached to a block body having a rectangular parallelepiped shape or the like.
考案の効果 以上のように本考案にあっては、いわゆるポーラスプラ
グと呼ばれ、ガス吹き込み柱状体が多孔質耐火物なので
溶損速度が大きいという欠点があるものの、多孔質耐火
物の上端の全面から溶融金属へガスを吹き込め、ガス吹
き込みを安定して均一状に行えて溶融金属の攪拌効果が
大きいものである。そして、その使用初期段階において
外側の緻密質耐火物の筒状の上面の内側の多孔質耐火物
のガス吹き込み柱状体の上端面の全面にわたって溶鋼が
たまり、酸素洗浄を容易に行えて通気性を確保でき、使
用初期から十分に性能を発揮できてガス吹き込みプラグ
の寿命まで連続してガス吹き込みを円滑に行うことがで
きる。また、上記多孔質耐火物のガス吹き込み柱状体の
上端面は外側の緻密質耐火物よりも５〜20mm位低いの
で、ガス吹き込みプラグの寿命を短くしなくできるもの
であり、単純な形状なので、製造が容易なものである。Effect of the Invention As described above, in the present invention, a so-called porous plug is used, and since the gas-injected columnar body is a porous refractory, it has a drawback that the melting rate is high, but the entire top surface of the porous refractory is The gas is blown into the molten metal from the inside, and the gas can be blown stably and uniformly, so that the stirring effect of the molten metal is great. Then, in the initial stage of its use, molten steel accumulates over the entire upper surface of the gas-injected columnar body of the inner porous refractory material on the cylindrical upper surface of the outer dense refractory material, facilitating oxygen cleaning and air permeability. It can be ensured, and the performance can be sufficiently exhibited from the initial stage of use, and the gas can be smoothly injected continuously until the life of the gas injection plug. Further, the upper end surface of the gas-blown columnar body of the porous refractory material is lower than the dense refractory material on the outside by about 5 to 20 mm, so that the life of the gas-blowing plug can be prevented from being shortened, and since it has a simple shape, It is easy to manufacture.
第１図は本考案の一実施例の側断面図、第２図は従来例
の側断面図である。 １…ガス吹き込みプラグ、２…緻密質耐火物、５…多孔
質耐火物のガス吹き込み柱状体、６…段差。FIG. 1 is a side sectional view of an embodiment of the present invention, and FIG. 2 is a side sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Gas injection plug, 2 ... Dense refractory material, 5 ... Porous refractory gas injection columnar body, 6 ... Step.
Claims (1)
内側に多孔質耐火物のガス吹き込み柱状体を内装したガ
ス吹き込みプラグであって、 上記内側の多孔質耐火物のガス吹き込み柱状体の上端の
全面を、その外側の緻密質耐火物の上面より５〜20mm位
低く段差をつけて内装したことを特徴とするガス吹き込
みプラグ。1. A gas-blowing plug having a dense refractory material arranged in a tubular shape, and a gas-blowing columnar body for the porous refractory material provided inside the gas-refractory material. A gas injection plug characterized in that the entire upper end of the blown columnar body is internally stepped by a height of 5 to 20 mm lower than the upper surface of the dense refractory material on the outside thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989151913U JPH0721561Y2 (en) | 1989-12-27 | 1989-12-27 | Gas blow plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989151913U JPH0721561Y2 (en) | 1989-12-27 | 1989-12-27 | Gas blow plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0389146U JPH0389146U (en) | 1991-09-11 |
| JPH0721561Y2 true JPH0721561Y2 (en) | 1995-05-17 |
Family
ID=31698197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989151913U Expired - Lifetime JPH0721561Y2 (en) | 1989-12-27 | 1989-12-27 | Gas blow plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721561Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009046755A (en) * | 2007-08-23 | 2009-03-05 | Tokyo Yogyo Co Ltd | Gas blowing plug |
| KR101346701B1 (en) * | 2012-06-27 | 2014-01-06 | 주식회사 동국알앤에스 | Well block for purging plug |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4725047A (en) * | 1985-08-26 | 1988-02-16 | Labate M D | Device for introducing gas into molten metal |
| JPH01249260A (en) * | 1988-03-30 | 1989-10-04 | Toshiba Ceramics Co Ltd | Porous plug |
-
1989
- 1989-12-27 JP JP1989151913U patent/JPH0721561Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009046755A (en) * | 2007-08-23 | 2009-03-05 | Tokyo Yogyo Co Ltd | Gas blowing plug |
| KR101346701B1 (en) * | 2012-06-27 | 2014-01-06 | 주식회사 동국알앤에스 | Well block for purging plug |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0389146U (en) | 1991-09-11 |
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