JPH0716786B2 - Sliding nozzle device with gas blowing mechanism - Google Patents
Sliding nozzle device with gas blowing mechanismInfo
- Publication number
- JPH0716786B2 JPH0716786B2 JP2133945A JP13394590A JPH0716786B2 JP H0716786 B2 JPH0716786 B2 JP H0716786B2 JP 2133945 A JP2133945 A JP 2133945A JP 13394590 A JP13394590 A JP 13394590A JP H0716786 B2 JPH0716786 B2 JP H0716786B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle device
- sliding nozzle
- gas
- gas blowing
- blowing mechanism
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、ガス吹き機構を有する溶融金属流量制御用ス
ライディングノズル装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molten metal flow rate controlling sliding nozzle device having a gas blowing mechanism.
従来の技術 摺動盤レンガの溶鋼閉塞位置における摺動面に凹部を設
け、該凹部内にガス吹込用耐火物を嵌合させ、このガス
吹込用耐火物の下方に、前記凹部の底面全体および凹部
の周面の一部を覆う取付け金具を有するガス導入管の一
端を開口させたことを特徴とするスライディングノズル
装置が知られている（特公昭64−5992号公報）。2. Description of the Related Art A recess is provided on a sliding surface at a molten steel closed position of a sliding board brick, a gas blowing refractory is fitted in the recess, and the entire bottom surface of the recess and a bottom of the gas blowing refractory are fitted. A sliding nozzle device is known in which one end of a gas introduction pipe having a fitting for covering a part of the peripheral surface of the recess is opened (Japanese Patent Publication No. 64-5992).
また、スライド盤の溶鋼閉止位置の下方にガス溜部を設
け、該ガス溜部上方と摺動面間に多数のガス噴出孔を設
けたスライディングノズル装置が知られている（特公昭
46−21830号公報）。There is also known a sliding nozzle device in which a gas reservoir is provided below a molten steel closing position of a slide board, and a large number of gas ejection holes are provided between the gas reservoir above and the sliding surface (Japanese Patent Publication No.
46-21830).
発明が解決しようとする課題 しかしながら、前者の方式は、ガス吹込用耐火物の溶鋼
による溶損並びに目詰り及び該耐火物係止用モルタル等
の溶損による浮上等の欠点があり、また、後者の方式は
ガス供給パイプを側方から連設することができず、従っ
て三層式スライディングノズル装置には適用できないと
言う、使用装置上の制限をうけることになる。SUMMARY OF THE INVENTION However, the former method has drawbacks such as melting loss due to molten steel of gas blowing refractory and clogging and floating due to melting loss of the refractory locking mortar and the like, and the latter. However, the method of (2) cannot connect the gas supply pipes laterally, and therefore cannot be applied to the three-layer sliding nozzle device.
課題を解決するための手段 本発明の具体的数例を添付図面に基いて詳述する。Means for Solving the Problems Specific examples of the present invention will be described in detail with reference to the accompanying drawings.
第１図及び第２図は本発明装置に用いるスライド盤の一
例を示す縦断面図、第３図は第１図図示のスライド盤を
２層式スライディングノズル装置に適用した例を示す縦
断面図、第４図は３層式スライディングノズル装置に適
用した例を示す縦断面図である。1 and 2 are longitudinal sectional views showing an example of a slide board used in the device of the present invention, and FIG. 3 is a longitudinal sectional view showing an example in which the slide board shown in FIG. 1 is applied to a two-layer sliding nozzle device. FIG. 4 is a longitudinal sectional view showing an example applied to a three-layer sliding nozzle device.
第１図において、スライド盤１は耐火物からなり、２は
溶鋼注入孔であり、３は固定盤との摺動面である。この
スライド盤１の溶鋼閉止位置でかつ前記摺動面３の反対
側の下面に逆凹部４が設けてあり、この逆凹部４にはガ
ス不透過性耐火物からなり、その外周に鋼板10を焼嵌め
した栓れんが５が嵌合してある。この栓れんが５は前記
逆凹部４に対して一定の間隙部６を形成するよう嵌合し
てある。また該栓れんが５は前記逆凹部４の底面側（上
部）に開口を有するガス溜部７を有し、該ガス溜部７は
ガス供給パイプ８を介してガス（通常不活性ガス）供給
源に連通してある。更に、逆凹部４の底面と前記スライ
ド盤摺動面（固定盤側）３との間に多数の貫通細孔９が
穿設してある。In FIG. 1, a slide board 1 is made of a refractory material, 2 is a molten steel injection hole, and 3 is a sliding surface with a fixed board. A reverse recess 4 is provided at the molten steel closed position of the slide board 1 and on the lower surface opposite to the sliding surface 3. The reverse recess 4 is made of a gas impermeable refractory, and a steel plate 10 is provided on the outer periphery thereof. The shrink-fitted brick 5 is fitted. The plug brick 5 is fitted in the reverse recess 4 so as to form a constant gap 6. Further, the plug brick 5 has a gas reservoir 7 having an opening on the bottom side (upper part) of the reverse recess 4, and the gas reservoir 7 is a gas (usually inert gas) supply source via a gas supply pipe 8. Is in communication with. Further, a large number of through pores 9 are formed between the bottom surface of the reverse recessed portion 4 and the slide plate sliding surface (fixed plate side) 3.
第２図は本発明の他の例を示す第１図と同様の縦断面図
であるが、この例では栓体れんが５とガス供給パイプ８
とを予じめ結合したものを用いる場合であり、スライド
盤にガス供給パイプ挿入用溝を設けて置き、セット後モ
ルタル又はキャスタブル耐火物28を充填し、固定した例
を示し、その他の機構は第１図とほぼ同等である。FIG. 2 is a vertical sectional view similar to FIG. 1 showing another example of the present invention, but in this example, a plug brick 5 and a gas supply pipe 8 are provided.
In the case of using the one in which and are preliminarily coupled, a slide plate is provided with a groove for gas supply pipe insertion, and after setting, filled with mortar or castable refractory 28 and fixed, the other mechanism is shown. It is almost the same as in FIG.
尚、第１図及び第２図において、10は前記栓れんがに焼
嵌めした鋼板、11は耐火モルタル、12はスライド盤１の
周囲に配置したメタルフープである。1 and 2, 10 is a steel plate shrink-fitted to the plug brick, 11 is a refractory mortar, and 12 is a metal hoop arranged around the slide plate 1.
第３図は２層式スライディングノズル装置に前述した機
構のスライド盤を適用した例を示し、第３図において、
21は固定盤、22はシュートノズル、23はインサートノズ
ル、24はノズル受れんが、25は取鍋又はタンデッシュ鉄
皮、26は溶鋼流を示す。FIG. 3 shows an example in which the slide board of the above-mentioned mechanism is applied to a two-layer sliding nozzle device, and in FIG.
Reference numeral 21 is a fixed platen, 22 is a chute nozzle, 23 is an insert nozzle, 24 is a nozzle holder, 25 is a ladle or a tundish iron shell, and 26 is a molten steel flow.
第４図は３層式スライディングノズル装置に前述した機
構のスライド盤を適用した例を示し、27はシール盤であ
り、その他の部材は第１図及び第２図と同様である。FIG. 4 shows an example in which a slide plate having the above-mentioned mechanism is applied to a three-layer sliding nozzle device, 27 is a seal plate, and other members are the same as those in FIGS. 1 and 2.
本発明装置は前述の如き構成からなっているが、各部材
について更に詳細に説明する。Although the device of the present invention has the above-mentioned configuration, each member will be described in more detail.
（１）固定盤 インサートノズルの下側にモルタル（図示せず）を介し
て固着させる、一般のスライディングノズル装置に使用
される。外形がほぼ競争路状あるいは長八角形状の耐火
物製盤状体である。(1) Fixed plate Used for a general sliding nozzle device that is fixed to the lower side of the insert nozzle via a mortar (not shown). It is a refractory board-shaped body with a substantially competitive road shape or a long octagonal shape.
（２）スライド盤 固定盤の下側（２層式の場合第３図）、あるいは固定盤
と固定されたシール盤との間（３層式の場合、第４図）
に摺動自在に密着あるいは挾設されている、固定盤と類
似形状の耐火物製盤状体であって、固定盤などと同材質
（たとえば、Al2O3-C質）である。(2) Sliding plate Lower side of fixed plate (Fig. 3 for 2-layer type) or between fixed plate and fixed sealing plate (Fig. 4 for 3-layer type)
It is a refractory plate-like body having a shape similar to that of the fixed plate, which is slidably attached to or sandwiched between the fixed plate and the like, and is made of the same material (for example, Al 2 O 3 -C quality).
（３）逆凹部 スライド盤において、その溶鋼閉止位置でかつ固定盤の
反対側の下面に、すなわち、２層式においては金属ケー
ス側（図示せず）、あるいは３層式においては、シール
盤側に、常法により設ける。その手段としては、スライ
ド盤を成形、焼成後、使用条件に合致する大きさ（外
径）のダイヤモンドビットで、所要の深さにくりぬいた
のち、その底面を平滑に加工するとよいが、別法として
は、あらかじめ、凸状の突起を有する成形型を使用し、
素地成形時に設けてもよい。(3) Reverse recessed portion In the slide plate, at the molten steel closed position and on the lower surface opposite to the fixed plate, that is, the metal case side (not shown) in the two-layer type, or the seal plate side in the three-layer type. In accordance with the usual method. As a means to do this, after molding and baking the slide board, it is good to cut it to the required depth with a diamond bit of a size (outer diameter) that matches the usage conditions, and then process the bottom surface to be smooth. In advance, use a mold with convex protrusions in advance,
It may be provided at the time of molding.
なお、その深さは、スライド盤の厚さの1/2〜4/5がよ
い。なぜならば、1/2未満ではあまりに浅くなりすぎ
て、後述する栓体をモルタルで固着するための接着代が
少なくなり、N2などのガス漏れの原因となるし、4/5を
超えると逆凹部の底部に相当する部が薄くなりすぎて、
スライド盤の強度が低下し、使用中に亀裂が発生する恐
れがあるからである。The depth is preferably 1/2 to 4/5 of the thickness of the slide board. The reason is that if it is less than 1/2, it becomes too shallow, and the bonding allowance for fixing the plug body described later with mortar is reduced, causing gas leakage such as N 2, and if it exceeds 4/5, it becomes reverse. The part corresponding to the bottom of the recess is too thin,
This is because the strength of the slide plate is reduced and cracks may occur during use.
なお、前記の溶鋼閉止位置とは、通常、第２図に示すよ
うに、油圧シリンダー（図示せず）を作動させて、スラ
イド盤を奥方（右方）いっぱいまで摺動させ、シュート
ノズルから流出する溶鋼などの溶融金属を完全に止める
ことができる位置をいうが、必要に応じて、その位置を
若干注入孔寄りに設けてもよい。In addition, the molten steel closed position is usually the hydraulic cylinder (not shown) actuated to slide the slide plate to the back (right) as shown in FIG. Although it refers to a position where molten metal such as molten steel can be completely stopped, the position may be provided slightly near the injection hole, if necessary.
（４）栓体（栓れんが） 一般に、スライド盤と同材質、あるいは必要に応じて、
異材質でも良く、別の耐火板などを、所要寸法のダイヤ
モンドビットでくりぬき、その両面を所定の寸法に、平
行かつ、平滑に切削加工し、鉄バンド（厚さ約1mm）を
焼きばめしたもので、ガス不透過性の緻密なものであ
る。(4) Plug (plug brick) Generally, the same material as the slide board, or if necessary,
Different materials may be used. Another fireproof plate is cut with a diamond bit of the required size, both sides of which are cut to a specified size in parallel and smooth, and an iron band (thickness of about 1 mm) is shrink-fitted. It is a gas impermeable and dense material.
形状は、第１図乃至第４図に示すように、ほぼ中央に有
底のガス溜部を設けたもの、あるいは第５図乃至第８図
のように、栓体の側部にガス溜部を設けたものであっ
て、モルタルを介して逆凹部の底面と約2mmの空隙部を
形成するように、きつく嵌め込まれている。As shown in FIGS. 1 to 4, the shape is such that a bottomed gas reservoir is provided in the center, or as shown in FIGS. 5 to 8, the gas reservoir is provided on the side of the plug body. And is tightly fitted so as to form a gap of about 2 mm with the bottom surface of the inverted recess via the mortar.
（５）ガス供給パイプ ガス供給パイプのセット態様は下記のように行なう： 第１図はガス供給パイプ（例えば外径6mm、内径4mmの銅
パイプ）をスライド盤に穿孔した挿入孔を通して栓れん
がに結合した例であり、第２図はスライド盤にガス供給
パイプセット用溝を設け、ガス供給パイプと栓れんがと
を予じめ結合した状態で取り付けた例である。(5) Gas supply pipe The manner of setting the gas supply pipe is as follows: Fig. 1 shows a gas supply pipe (for example, a copper pipe having an outer diameter of 6 mm and an inner diameter of 4 mm) inserted through a slide board into a plug brick. FIG. 2 shows an example in which the slide plate is provided with a groove for gas supply pipe setting, and the gas supply pipe and the plug brick are attached in a pre-bonded state.
以上の手段がガス供給パイプの好ましいセット例である
が、これら例に限定するものではない。The above-mentioned means are preferable examples of the gas supply pipe, but are not limited to these examples.
（６）貫通細孔 逆凹部の底面とスライド盤の上面（固定盤との摺動面）
の間に多数個穿設された内径0.1〜0.8mmの小孔であっ
て、第１図に示すように、底部のほぼ全面あるいは第４
図および第５図に示すように、やや中央寄りに、20〜30
本常法によって、同心円状あるいは、千鳥状に設けてあ
る。(6) Through-holes Bottom surface of reverse recess and top surface of slide board (sliding surface with fixed board)
A large number of small holes with an inner diameter of 0.1 to 0.8 mm are formed between the holes, and as shown in FIG.
As shown in Fig. 5 and Fig. 5, 20-30
According to this conventional method, they are provided in a concentric pattern or a staggered pattern.
発明の効果 （１）溶鋼に直接接触する溶鋼閉止位置、即ちスライド
盤と固定盤との摺動面に、ガス吹込用プラグのモルタル
部がないために、従来方式のようなモルタル部の損傷が
ない。EFFECTS OF THE INVENTION (1) Since there is no mortar portion of the gas injection plug at the molten steel closing position that directly contacts the molten steel, that is, the sliding surface between the slide plate and the fixed plate, damage to the mortar part as in the conventional method is avoided. Absent.
（２）従って、ガス吹き用プラグの浮上事故等は全く生
じない。(2) Therefore, the floating accident of the gas blowing plug does not occur at all.
（３）逆凹部底面と栓れんが間に間隙部が設けてあり、
ガスの溶鋼中への噴出が均一化され、溶鋼凝固防止効果
が閉止部位全域で均等である。(3) There is a gap between the bottom of the reverse recess and the brick.
Ejection of gas into molten steel is made uniform, and the effect of preventing molten steel solidification is uniform throughout the closed region.
（４）鋼板を外周に焼嵌めした不透過性耐火物からなる
栓れんがとしたので、亀裂発生を防止し供給ガスのリー
クがない。(4) Since the plug brick is made of an impermeable refractory having a steel plate shrink-fitted on the outer periphery, cracks are prevented and the supply gas does not leak.
（５）以上の結果、スライディングノズル装置の使用寿
命の延命が図れる。(5) As a result, the service life of the sliding nozzle device can be extended.
第１図及び第２図は本発明装置に用いるスライド盤の一
例を示す縦断面図、第３図は第１図図示のスライド盤を
２層式スライディングノズル装置に適用した例を示す縦
断面図、第４図は３層式スライディングノズル装置に適
用した例を示す縦断面図、第５図及び第６図（ａ）、
（ｂ）は栓れんがとガス溜部との変形例及び貫通細孔の
配設例を示す平面図及び縦断面図であり、第７図
（ａ）、（ｂ）は栓れんがのガス溜部とガス供給パイプ
との関係位置の一例を示す平面図及び縦断面図、第８図
はスライド盤へのガス供給パイプの配設位置の一例を示
す平面図でる。図中： １…スライド盤、２…溶鋼注入孔、３…摺動面、４…逆
凹部、５…栓れんが、６…間隙部、７…ガス溜部、８…
ガス供給パイプ、９…貫通細孔、10…鋼板、11…耐火モ
ルタル、12…メタルフープ、21…固定盤、22…シュート
ノズル、23…インサートノズル、24…ノズル受れんが、
25…取鍋又はタンディッシュ鉄皮、26…溶鋼、27…シー
ル盤、28…モルタル又はキヤスタブル耐火物。1 and 2 are longitudinal sectional views showing an example of a slide board used in the device of the present invention, and FIG. 3 is a longitudinal sectional view showing an example in which the slide board shown in FIG. 1 is applied to a two-layer sliding nozzle device. FIG. 4 is a longitudinal sectional view showing an example applied to a three-layer sliding nozzle device, FIG. 5 and FIG. 6 (a),
FIG. 7B is a plan view and a vertical cross-sectional view showing a modified example of the plug brick and the gas reservoir and an example of the arrangement of the through pores, and FIGS. 7A and 7B show the gas reservoir of the plug brick and the gas reservoir. FIG. 8 is a plan view and a vertical sectional view showing an example of a position related to the gas supply pipe, and FIG. 8 is a plan view showing an example of a position where the gas supply pipe is arranged on the slide board. In the figure: 1 ... Sliding plate, 2 ... Molten steel injection hole, 3 ... Sliding surface, 4 ... Reverse recess, 5 ... Plug brick, 6 ... Gap, 7 ... Gas reservoir, 8 ...
Gas supply pipe, 9 ... Through hole, 10 ... Steel plate, 11 ... Refractory mortar, 12 ... Metal hoop, 21 ... Fixing plate, 22 ... Chute nozzle, 23 ... Insert nozzle, 24 ... Nozzle receptacle,
25 ... Ladle or tundish iron skin, 26 ... Molten steel, 27 ... Sealing board, 28 ... Mortar or castable refractory.
Claims (3)
装置において、スライド盤の溶鋼閉止位置で、かつ固定
盤と反対側下面に逆凹部を設け、ガス供給パイプに連通
するガス溜部を有し、かつ外周に鋼板を焼嵌めした不透
過性耐火物からなる栓体を嵌合し、該栓体と前記逆凹部
底面との間全面に間隙部を設け、かつ前記逆凹部の底部
に多数の貫通細孔を穿設したことを特徴とする、ガス吹
き機構を有するスライディングノズル装置。1. A sliding nozzle device for controlling a molten metal flow rate, comprising a reverse recess at a molten steel closing position of a slide plate and on a lower surface opposite to a fixed plate, and having a gas reservoir communicating with a gas supply pipe, and A plug body made of an impermeable refractory having a steel plate shrink-fitted on the outer periphery is fitted, a gap is provided over the entire surface between the plug body and the bottom surface of the reverse recess, and a large number of penetrating fine holes are provided at the bottom of the reverse recess. A sliding nozzle device having a gas blowing mechanism, characterized in that holes are provided.
ある、請求項１記載のガス吹き機構を有するスライディ
ングノズル装置。2. A sliding nozzle device having a gas blowing mechanism according to claim 1, wherein the sliding nozzle device is of a two-layer type.
ある、請求項１記載のガス吹き機構を有するスライディ
ングノズル装置。3. A sliding nozzle device having a gas blowing mechanism according to claim 1, wherein the sliding nozzle device is a three-layer type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2133945A JPH0716786B2 (en) | 1990-05-25 | 1990-05-25 | Sliding nozzle device with gas blowing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2133945A JPH0716786B2 (en) | 1990-05-25 | 1990-05-25 | Sliding nozzle device with gas blowing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0433772A JPH0433772A (en) | 1992-02-05 |
| JPH0716786B2 true JPH0716786B2 (en) | 1995-03-01 |
Family
ID=15116744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2133945A Expired - Fee Related JPH0716786B2 (en) | 1990-05-25 | 1990-05-25 | Sliding nozzle device with gas blowing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716786B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7165116B2 (en) | 2019-11-25 | 2022-11-02 | 東京窯業株式会社 | Sliding plate or fixed plate of molten metal discharging device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6352999A (en) * | 1986-08-20 | 1988-03-07 | ダイキン工業株式会社 | Cutter |
-
1990
- 1990-05-25 JP JP2133945A patent/JPH0716786B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0433772A (en) | 1992-02-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |