JPH0747166Y2 - Tandatsushiyu - Google Patents
TandatsushiyuInfo
- Publication number
- JPH0747166Y2 JPH0747166Y2 JP1989049682U JP4968289U JPH0747166Y2 JP H0747166 Y2 JPH0747166 Y2 JP H0747166Y2 JP 1989049682 U JP1989049682 U JP 1989049682U JP 4968289 U JP4968289 U JP 4968289U JP H0747166 Y2 JPH0747166 Y2 JP H0747166Y2
- Authority
- JP
- Japan
- Prior art keywords
- weir
- tundish
- wall surface
- molten steel
- fixing member
- 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
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は溶鋼の連続鋳造装置を構成するタンデイツシユ
内部に設けられている堰が、溶鋼注入時に溶鋼の流れに
よつて倒壊したり位置がズレたり或いは浮上したりする
ことのないタンデイツシユに関するものである。[Detailed Description of the Invention] [Industrial field of application] In the present invention, the weir provided inside the tundish forming the continuous casting apparatus for molten steel collapses or shifts in position due to the flow of molten steel during molten steel injection. The present invention relates to a tandishyu that does not or does not surface.
溶鋼の連続鋳造装置は、主として取鍋とタンデイツシユ
と連続鋳造用鋳型と冷却装置とガイドロール群とから成
つている。このような連続鋳造装置において、溶鋼は取
鍋のロングノズルからタンデイツシユ内に注入された後
にタンデイツシユに固定されている浸漬ノズルを経て連
続鋳造用鋳型内に連続的に注入されるが、その際に溶鋼
を取鍋のロングノズル位置からタンデイツシユ内を経て
そのまま浸漬ノズル位置から連続鋳造用鋳型内に流出せ
しめたのでは、溶鋼に混入或いは浮上しているスラグが
連続鋳造用鋳型内にそのまま流出してしまうことがある
ので連続鋳造装置で鋳造された鋳片にスラグが混入して
鋳片の品質が悪化することになる。そこで近年、鋳片へ
のスラグの混入防止用として、タンデイツシユの取鍋の
ロングノズル挿入位置と浸漬ノズル位置との間に堰を設
けておいて、タンデイツシユ内を流動する溶鋼がその堰
を越えたり通過したりする間に溶鋼中のスラグがタンデ
イツシユ上部に浮上分離されてスラグの除去された溶鋼
のみが連続鋳造用鋳型内に連続的に注入されるようにし
たタンデイツシユが使用されるようになつてきた。この
ような溶鋼のタンデイツシユ内に設けられている堰は、
従来はタンデイツシユ内壁面にモルタル等を塗布して固
定させる方法か、更にこの方法に加えてタンデイツシユ
カバーで押え付ける方法が採用されていた。The continuous casting apparatus for molten steel mainly comprises a ladle, a tan dish, a casting mold for continuous casting, a cooling device and a group of guide rolls. In such a continuous casting apparatus, molten steel is continuously poured into a continuous casting mold through a long nozzle of a ladle, which is then poured into the tundish, and then through a dipping nozzle fixed to the tundish. If the molten steel is allowed to flow from the long nozzle position of the ladle through the tundish through the immersion nozzle position into the continuous casting mold, the slag mixed or floating in the molten steel flows out into the continuous casting mold as it is. As a result, the slag is mixed in the slab cast by the continuous casting apparatus, which deteriorates the quality of the slab. Therefore, in recent years, in order to prevent slag from mixing into the slab, a weir has been provided between the long nozzle insertion position and the immersion nozzle position of the ladle of the tundish so that molten steel flowing in the tundish may cross the weir. During the passage, the slag in the molten steel is floated and separated on the upper part of the tundish, and only the molten steel from which the slag has been removed is continuously injected into the continuous casting mold. It was The weir provided in such a molten steel tandem is
Conventionally, a method of applying mortar or the like to the inner wall surface of the tundish to fix it, or a method of pressing it with a tundish cover in addition to this method has been adopted.
このように従来の連続鋳造用タンデイツシユにおいて
は、ほとんどモルタル等の塗布によつて固定されている
のみであり、しかもタンデイツシユ内壁面を形成する際
にこのモルタル等を吹き付け施工したりする場合はどう
してもタンデイツシユ内壁面の寸法精度が正確ではな
く、その結果堰の側壁面とタンデイツシユ内壁面とを完
全に密着させて固定し難くなり、注入される溶鋼の流れ
によつて堰が倒壊したり、その固定位置がズレたり、更
にはタンデイツシユ内壁面から外れて浮上したりすると
いう問題点があつた。そして堰に対する溶鋼の流れによ
る押圧力や衝撃力は、取鍋のロングノズルからタンデイ
ツシユ内に溶鋼が最初に注入される際に特に大きいた
め、連続鋳造の初期の段階から上記問題点が起こること
が多かつた。その結果、鋳片の品質に悪影響を及ぼすと
共に鋳造操業が中断されて安定した操業ができないとい
う問題点があつたのである。As described above, in the conventional continuous casting tundish, it is almost fixed only by coating with mortar or the like, and when the mortar or the like is sprayed when forming the inner wall of the tundish, the tundish is inevitable. The dimensional accuracy of the inner wall surface is not accurate, and as a result, it becomes difficult to fix the side wall surface of the weir and the inner wall surface of the tundish completely by tightly contacting each other, and the weir collapses due to the flow of molten steel or its fixing position. However, there was a problem in that the surface of the tan dashiyu slipped off and floated up. The pressing force and impact force due to the flow of molten steel against the weir are particularly large when the molten steel is first injected into the tundish from the long nozzle of the ladle, so the above problems may occur from the initial stage of continuous casting. It was many. As a result, there is a problem that the quality of the slab is adversely affected and the casting operation is interrupted so that stable operation cannot be performed.
そこで本考案はタンデイツシユ内に設けられている堰が
強固に固定されて、溶鋼の流れによる押圧力や衝撃力に
よつて堰が倒壊したりズレたり浮上したりすることがな
く、安定して連続鋳造のできるタンデイツシユを提供す
ることを課題とする。Therefore, the present invention has a structure in which the weir provided in the tundish is firmly fixed, and the weir does not collapse, shift, or float up due to the pressing force or impact force due to the flow of molten steel, and it is stable and continuous. It is an object to provide a casting that can be cast.
本考案者等はかかる課題を解決するために種々検討した
結果、タンデイツシユ内壁面と堰の側壁面との間にくさ
びの如きの固定部材を打ち込むことによつて固定すると
堰が強固に固定されて、上記問題点が解決できることを
究明して本考案を完成したのである。As a result of various studies conducted by the present inventors to solve such a problem, the weir is firmly fixed when fixed by driving a fixing member such as a wedge between the inner wall surface of the tundish and the side wall surface of the weir. The inventors have completed the present invention by clarifying that the above problems can be solved.
以下、図面に基づいて本考案に係るタンデイツシユを詳
細に説明する。Hereinafter, a tundish according to the present invention will be described in detail with reference to the drawings.
第１図は本考案に係るタンデイツシユの１例の概略断面
図、第２図は第１図の下堰部を示す部分斜視図、第３図
（Ａ）は第２図における堰のみの正面図、第３図（Ｂ）
は同側面図である。1 is a schematic sectional view of an example of a tundish according to the present invention, FIG. 2 is a partial perspective view showing a lower dam portion of FIG. 1, and FIG. 3 (A) is a front view of only the weir in FIG. , Fig. 3 (B)
Is a side view of the same.
図面中、１は底部に浸漬ノズル（図示なし）が固定され
る溶鋼流出口1aが設けられているタンデイツシユ本体、
２は取鍋のロングノズル（図示なし）が挿入される挿入
口2aが設けられているタンデイツシユカバー、３はタン
デイツシユ本体１における取鍋のロングノズル挿入位置
と浸漬ノズル位置との間に固定されている堰であつて、
この堰３はタンデイツシユ本体１の底部に密着させて固
定されている下堰や、タンデイツシユ本体１の底部との
間に間隔を設けて固定されている上堰や、フイルター型
や横孔付き型等のものでも良い。４はくさびやキーの如
き耐火物から成る固定部材である。In the drawing, reference numeral 1 is a tandem body having a molten steel outlet 1a to which a submerged nozzle (not shown) is fixed,
2 is a tundish cover provided with an insertion port 2a into which a long nozzle (not shown) of the ladle is inserted, and 3 is fixed between the long nozzle insertion position of the ladle and the immersion nozzle position in the tundish main body 1. It is a weir that is
The weir 3 is a lower weir fixed in close contact with the bottom of the tundish main body 1, an upper weir fixed with a space from the bottom of the tundish main body 1, a filter type, a lateral hole type, etc. It can be one. Reference numeral 4 is a fixing member made of a refractory material such as a wedge or a key.
このような構成の本考案に係るタンデイツシユにおい
て、堰３はタンデイツシユ本体１の取鍋のロングノズル
挿入位置と浸漬ノズル位置との間にあつてタンデイツシ
ユ本体１の内壁面との間に打ち込まれた固定部材４を介
して固定されており、図例では第２図に示すように固定
部材４が総べてくさびであつて且つ堰３の側壁面に設け
られている切り込み3aに固定部材４がその上側と溶鋼の
流れ方向Ｆ（矢印で示す）の上流側及び下流側とからそ
れぞれ打ち込まれた固定部材４によつて固定されてお
り、この固定部材４の個数は溶鋼の流れに対する抵抗力
がより大になるように各片側において第３図に示す如く
溶鋼の流れ方向Ｆの上流側（１個）よりも下流側（２
個）の方が多く設けられていることが好ましい。In the tundish according to the present invention having such a structure, the weir 3 is fixed between the long nozzle insertion position and the immersion nozzle position of the ladle of the tundish main body 1 and between the inner wall surface of the tundish main body 1. It is fixed through the member 4, and in the illustrated example, as shown in FIG. 2, the fixing member 4 is entirely wedged, and the fixing member 4 is attached to the notch 3a provided on the side wall surface of the weir 3. The upper side and the upstream and downstream sides of the molten steel flow direction F (indicated by an arrow) are fixed by fixed members 4 respectively. The number of the fixed members 4 has a higher resistance to the flow of molten steel. As shown in FIG. 3, on each side so as to be large, downstream (2) from upstream (1) in the flow direction F of the molten steel.
It is preferable that a larger number of pieces are provided.
なお本考案においては、図例の如く固定部材４は堰３に
のみ切り込み3aが設けられている場合のみならず、タン
デイツシユ本体１の内壁面にも固定部材４が打ち込まれ
る溝部（図示なし）が設けられていてもよく、この場合
固定部材４は図例の如くくさびであつても一部がキーで
あつても差し支えなく、このように固定部材４の一部と
してキーが用いられる場合には堰３の側壁面とタンデイ
ツシユ本体１の内壁面とにキー打ち込み用のキー溝（図
示なし）が設けられることになる。そして、堰３はこの
ように固定部材４を介して固定されていると共に更にモ
ルタルの塗布によつても固定されていることが望まし
く、そのモルタルがMgO含有量が50％以上の不定形耐火
物であると固定部材４とのスピネル化又はフオルステラ
イト化反応による接着強度の向上と連続鋳造中の固定部
材４の膨張が不定形耐火物（モルタル）によつて緩和さ
れるため、固定部材４の膨張ワレが防止できるようにな
つてより望ましい。In the present invention, the fixing member 4 is not limited to the case in which the cut 3a is provided only in the weir 3 as shown in the figure, and the inner wall surface of the tundish main body 1 has a groove (not shown) into which the fixing member 4 is driven. It may be provided, and in this case, the fixing member 4 may be a wedge or a part of the key as shown in the drawing, and when the key is used as a part of the fixing member 4 in this way, A key groove (not shown) for key driving is provided in the side wall surface of the weir 3 and the inner wall surface of the tundish main body 1. It is desirable that the weir 3 is thus fixed via the fixing member 4 and further fixed by applying mortar, and the mortar has an MgO content of 50% or more and is an irregular refractory material. In that case, since the adhesion strength of the fixing member 4 by the spinelization or forsterite formation reaction with the fixing member 4 and the expansion of the fixing member 4 during continuous casting are alleviated by the amorphous refractory material (mortar), It is more desirable that expansion cracks can be prevented.
また本考案においてはタンデイツシユ本体１の内壁面の
材質が主としてMgOから成る耐火物であつて、堰３の材
質がMgO含有量50％以上の耐火物であり、且つ堰３を固
定している固定部材４の材質がAl2O3含有量30％以上の
シヤモツト煉瓦であると、タンデイツシユ内に注入され
た溶鋼の熱によりこれらの各部材同士がスピネル化又は
フオルステライト化反応を起こし、互いにより強固に接
着されるようになるので好ましい。Further, in the present invention, the material of the inner wall surface of the tundish body 1 is a refractory material mainly made of MgO, and the material of the weir 3 is a refractory material having an MgO content of 50% or more, and the weir 3 is fixed. When the material of the member 4 is a chamotte brick having an Al 2 O 3 content of 30% or more, the heat of the molten steel injected into the tundish causes a spinelization or forsterite conversion reaction between these members, resulting in stronger mutual strength. It is preferable because it will be adhered to.
更にまた堰３について実施例の如く二重堰が望ましい
が、下堰のみでもよく、本考案においては堰３の数，形
状，種類については特に限定されるものではない。Further, the weir 3 is preferably a double weir as in the embodiment, but only the lower weir may be used, and the number, shape and type of the weir 3 are not particularly limited in the present invention.
以上のような本考案に係る連続鋳造用タンデイツシユに
おいて、取鍋のロングノズル（図示なし）からタンデイ
ツシユ本体１内に注入された溶鋼は注入された後に下堰
３に当り、しかる後に下堰３と上堰３との間を経て下堰
３を越えて溶鋼流出口1aから浸漬ノズル（図示なし）を
経て連続鋳造用鋳型（図示なし）内に流出される。In the tundish for continuous casting according to the present invention as described above, the molten steel injected into the tundish body 1 from the long nozzle (not shown) of the ladle hits the lower weir 3 after being injected, and then the lower weir 3 After passing through the space between the upper weir 3 and the lower weir 3, the molten steel flows out from the molten steel outlet 1a into a continuous casting mold (not shown) through a dipping nozzle (not shown).
この際、本考案に係るタンデイツシユの堰は従来のタン
デイツシユと違つて、タンデイツシユ本体１の内壁面と
の間にくさびやキーの如き耐火物から成る固定部材４が
打ち込まれて固定されていることにより溶鋼の流れによ
る衝撃力や押圧力に対して充分な抵抗力が生ずるように
なり、堰３が倒壊したりズレたりタンデイツシユ本体１
の内壁面から外れて浮上したりすることがなくなるので
ある。At this time, unlike the conventional tundish, the tundish weir according to the present invention has a fixing member 4 made of a refractory such as a wedge or a key driven between the inner wall surface of the tundish main body 1 and fixed. Sufficient resistance is generated against impact force and pressing force due to the flow of molten steel, and the weir 3 collapses or shifts, and the tundish body 1
It will not come off from the inner wall surface of the.
また、材質としてタンデイツシユ本体１の内壁面がMgO
を主成分とする耐火物から成り、堰３の材質がMgO含有
量50％以上の耐火物から成り、固定部材４の材質がAl2O
3含有量30％以上のシヤモツト煉瓦から成つていると、
主としてMgOから成るタンデイツシユ本体１の内壁面とM
gO質の堰３とシヤモツト煉瓦である固定部材４とがタン
デイツシユ本体１内に注入された溶鋼の熱でスピネル化
又はフオルステライト化反応を起こし、より強固に接着
されるようになるのである。In addition, as the material, the inner wall surface of the tundish body 1 is MgO.
The main material of the weir 3 is a refractory having a MgO content of 50% or more, and the material of the fixing member 4 is Al 2 O.
3 If it is made of Sheamot brick with a content of 30% or more,
The inner wall surface of the main body 1 of the tundish mainly composed of MgO and M
The gO quality weir 3 and the fixing member 4, which is a clay brick, cause spinelization or forsterite formation reaction by the heat of the molten steel injected into the tundish main body 1 so that they are more firmly bonded.
15トン容量のタンデイツシユ本体１の内壁面と接触する
下堰３及び上堰３の各側壁面に、上側に１個所，溶鋼の
流れ方向Ｆの上流側に１個所、溶鋼の流れ方向Ｆの下流
側に２個所それぞれくさび状の切り込みを設け、それぞ
れの切り込みにくさび状の耐火物から成る固定部材４を
打ち込み、これに更にモルタルを吹き付け塗布して第１
図のように下堰３及び上堰３を固定したタンデイツシユ
を施工した。このタンデイツシユ本体１の内壁面，堰3,
固定部材4,モルタルの材質を第１表に示した。On each side wall surface of the lower weir 3 and the upper weir 3 in contact with the inner wall surface of the tundish body 1 having a capacity of 15 tons, one is located on the upper side, one is located on the upstream side in the flow direction F of the molten steel, and downstream in the flow direction F of the molten steel. Two wedge-shaped notches are provided on each side, and a fixing member 4 made of a wedge-shaped refractory material is driven into each of the notches, and mortar is further spray-coated on the fixing member 4.
As shown in the figure, the tundish which fixed the lower weir 3 and the upper weir 3 was constructed. The inner wall surface of the main body of this tundish, the weir 3,
Table 1 shows the materials of the fixing member 4 and mortar.
このタンデイツシユを使用して鋼種SUS304の溶鋼を約80
0分間、通鋼量約900トンの連続鋳造を実施するテストを
50回行つた。その結果、堰３が強固に固定されて、堰３
の倒壊やズレや浮上のトラブルは皆無であり、安定して
高品質の鋳片が得られた。また、鋳造後の堰3,タンデイ
ツシユ本体１の内壁面，固定部材4,モルタルの相互接触
境界面にスピネル化とフオルステライト化の生成が認め
られ、強固なセラミツクボンドが生成されていた。About 80% of molten steel of steel type SUS304 is used with this tundish.
A test to carry out continuous casting of approximately 900 tons of steel for 0 minutes
I went 50 times. As a result, the weir 3 is firmly fixed and the weir 3
There was no trouble such as collapse, deviation or floating, and stable and high quality slab was obtained. In addition, formation of spinelization and forsterite formation was observed in the mutual contact boundary surface of the weir 3, the inner wall surface of the tundish body 1, the fixing member 4, and the mortar after casting, and a strong ceramic bond was formed.
〔考案の効果〕 以上詳述した如く本考案に係るタンデイツシユによれ
ば、堰がタンデイツシユ本体の内壁面に耐火物から成る
固定部材を介して固定されているため、強固に固定され
鋳造中の堰のズレや倒壊や浮上等がなくなり、安定して
高品質の鋳片が得られるのである。しかも、固定部材は
くさびやキーの形状をなしたものを打ち込むだけである
ため、特別な固定技術や高価な材料を必要とせず容易に
且つ安価に製造できるのであり、材質としてタンデイツ
シユ本体の内壁面をMgOを主成分とする耐火物とし、堰
をMgO含有量50％以上の耐火物とし、固定部材をAl2O3含
有量30％以上のシヤモツト煉瓦とすると、タンデイツシ
ユ本体の内壁面と堰と固定部材とがスピネル化又はフオ
ルステライト化反応を起こしてより強固に接着されるよ
うになるのである。 [Advantage of the Invention] As described in detail above, according to the tundish according to the present invention, since the weir is fixed to the inner wall surface of the tundish main body through the fixing member made of refractory, the weir is firmly fixed and is being cast. It is possible to obtain stable and high quality slabs without any deviation, collapse or floating. Moreover, since the fixing member only needs to be driven in the shape of a wedge or key, it can be manufactured easily and inexpensively without the need for special fixing technology or expensive materials. Is a refractory containing MgO as a main component, the weir is a refractory having an MgO content of 50% or more, and the fixing member is a ceramic brick having an Al 2 O 3 content of 30% or more. The fixing member undergoes a spinelization reaction or a forsterite conversion reaction, and becomes more firmly bonded.
更に、固定部材としてくさび状のものを使用し、堰の上
側と溶鋼の流れ方向の上流側及び下流側とからこのくさ
びを打ち込むに際しくさびの個数を溶鋼の流れ方向の上
流側よりも下流側の方を多くすると堰がより強固に固定
されるようになるのである。Further, a wedge-shaped member is used as the fixing member, and when the wedges are driven from the upper side of the weir and the upstream side and the downstream side in the molten steel flow direction, the number of wedges is set to be more downstream than the upstream side in the molten steel flow direction. The more the weir, the more firmly the weir is fixed.
このように本考案に係るタンデイツシユは、種々の効果
が奏し、その工業的価値は非常に大きなものがある。As described above, the tundish according to the present invention has various effects and has an extremely great industrial value.
第１図は本考案に係るタンデイツシユの１例の概略断面
図、第２図は第１図の下堰部を示す部分斜視図、第３図
（Ａ）は第２図における堰のみの正面図、第３図（Ｂ）
は同側面図である。 図面中 １……タンデイツシユ本体 1a……溶鋼流出口 ２……タンデイツシユカバー 2a……挿入口 ３……堰 3a……切り込み ４……固定部材 Ｆ……溶鋼の流れ方向1 is a schematic sectional view of an example of a tundish according to the present invention, FIG. 2 is a partial perspective view showing a lower dam portion of FIG. 1, and FIG. 3 (A) is a front view of only the weir in FIG. , Fig. 3 (B)
Is a side view of the same. In the drawing 1 ... Tandish main body 1a ... Molten steel outlet 2 ... Tundish cover 2a ... Insertion port 3 ... Weir 3a ... Notch 4 ... Fixing member F ... Molten steel flow direction
───────────────────────────────────────────────────── フロントページの続き (72)考案者 坂本 敏 兵庫県高砂市伊保町梅井801番地の６ 旭 硝子株式会社高砂工場内 (72)考案者 渡辺 勇仁 兵庫県高砂市伊保町梅井801番地の６ 旭 硝子株式会社高砂工場内 (56)参考文献 特開 昭62−176646（ＪＰ，Ａ) 実開 昭57−146941（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Satoshi Sakamoto 6 801 Umei, Ibo-cho, Takasago-shi, Hyogo 6 Asahi Glass Co., Ltd. Takasago Factory (72) Yuhi Watanabe 801 Umei, Iho-cho, Takasago, Hyogo Prefecture 6 Asahi Glass Co., Ltd. Takasago Plant (56) References JP-A-62-176646 (JP, A) Actual development: S57-146941 (JP, U)
Claims (6)
位置との間に堰が固定されているタンデイツシユにおい
て、タンデイツシユの内壁面と堰の側壁面との間に打ち
込まれた耐火物から成る固定部材を介して堰が固定され
ていることを特徴とするタンデイツシユ。1. A tundish having a weir fixed between a long nozzle insertion position and a dipping nozzle position of a ladle, the fixation consisting of a refractory material driven between the inner wall surface of the tundish and the side wall surface of the weir. A tundish having a weir fixed through a member.
に該くさび打ち込み用の切り込みが設けられている請求
項１に記載のタンデイツシユ。2. The tundish of claim 1, wherein the fixing member is a wedge, and the side wall surface of the weir is provided with a notch for driving the wedge.
流側とからくさびを打ち込まれて固定されていると共に
該くさびの個数が溶鋼の流れ方向の上流側よりも下流側
の方が多い請求項２に記載のタンデイツシユ。3. The weir is fixed by punching wedges from the upper side and the upstream and downstream sides in the molten steel flow direction, and the number of the wedges is more downstream than the upstream side in the molten steel flow direction. A large amount of tandishyu of claim 2.
壁面とタンデイツシユの内壁面とに該キー打ち込み用の
キー溝が設けられている請求項１から３までのいずれか
１項に記載のタンデイツシユ。4. The key groove according to claim 1, wherein a part of the fixing member is a key and the side wall surface of the weir and the inner wall surface of the tundish are provided with the key groove for driving the key. Tandayushiyu described in.
MgOから成る耐火物，堰の材質がMgO含有量50％以上の耐
火物及び固定部材の材質がAl2O3含有量30％以上のシヤ
モツト煉瓦である請求項１から４までのいずれか１項に
記載のタンデイツシユ。5. The material of the inner wall surface of the tundish is mainly
5. A refractory made of MgO, a weir made of a refractory having an MgO content of 50% or more, and a fixing member made of a chamotte brick having an Al 2 O 3 content of 30% or more. Tandayushiyu described in.
によつても固定されている請求項１から５までのいずれ
か１項に記載のタンデイツシユ。6. The tundish of any one of claims 1 to 5, wherein the weir is also fixed by applying mortar having an MgO content of 50% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989049682U JPH0747166Y2 (en) | 1989-04-28 | 1989-04-28 | Tandatsushiyu |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989049682U JPH0747166Y2 (en) | 1989-04-28 | 1989-04-28 | Tandatsushiyu |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02144246U JPH02144246U (en) | 1990-12-06 |
| JPH0747166Y2 true JPH0747166Y2 (en) | 1995-11-01 |
Family
ID=31567587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989049682U Expired - Lifetime JPH0747166Y2 (en) | 1989-04-28 | 1989-04-28 | Tandatsushiyu |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747166Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6161530B2 (en) * | 2013-12-16 | 2017-07-12 | 昭和セラミックス株式会社 | Tundish weir and manufacturing method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57146941U (en) * | 1981-03-06 | 1982-09-16 | ||
| JPS62176646A (en) * | 1986-01-28 | 1987-08-03 | Sumitomo Metal Ind Ltd | Installing method for connecting refractory in continuous casting |
-
1989
- 1989-04-28 JP JP1989049682U patent/JPH0747166Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02144246U (en) | 1990-12-06 |
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