JP3068471B2 - Joint molding - Google Patents

Joint molding

Info

Publication number
JP3068471B2
JP3068471B2 JP8250381A JP25038196A JP3068471B2 JP 3068471 B2 JP3068471 B2 JP 3068471B2 JP 8250381 A JP8250381 A JP 8250381A JP 25038196 A JP25038196 A JP 25038196A JP 3068471 B2 JP3068471 B2 JP 3068471B2
Authority
JP
Japan
Prior art keywords
joint
nozzle
refractory
tuyere
immersion nozzle
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
Application number
JP8250381A
Other languages
Japanese (ja)
Other versions
JPH09278556A (en
Inventor
始 笠原
潔 礒野
洋一 横山
辰雄 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP8250381A priority Critical patent/JP3068471B2/en
Publication of JPH09278556A publication Critical patent/JPH09278556A/en
Application granted granted Critical
Publication of JP3068471B2 publication Critical patent/JP3068471B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Ceramic Products (AREA)
  • Sealing Material Composition (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ノズル耐火物と羽
口耐火物との間に充填されて目地を形成し、ノズル耐火
物を羽口耐火物に接合可能な目地用成形体に関するもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint molding which is filled between a nozzle refractory and a tuyere refractory to form a joint, and the nozzle refractory can be joined to the tuyere refractory. is there.

【0002】[0002]

【従来の技術】鋼の連続鋳造操業に用いるノズル耐火物
としては、ロングノズルおよび浸漬ノズルがあり、ここ
では浸漬ノズルについて説明する。すなわち、浸漬ノズ
ルは、タンディッシュからモールドへ溶鋼を供給するた
めに両者を連結するものであり、タンディッシュ底部の
羽口に装着される。この羽口と浸漬ノズルとの間には、
溶鋼が侵入して湯もれ等の事故を防ぐために目地材が充
填されている。通常、この目地材は水練りしたモルタル
により構成され、手等で浸漬ノズルの羽口接合部に所定
の厚みに塗り付けて目地を形成している。しかし、この
ような目地材の形成方法では、モルタルを浸漬ノズルに
一定の厚みで塗り付けるのに非常に手間がかかり、厚み
の調整が極めて困難であるという問題点がある。この問
題点に対処するために、浸漬ノズルに予め成形されてい
る目地用成形体を取り付け、この取り付け状態でその浸
漬ノズルをタンディッシュに接合することが行われてい
る。
2. Description of the Related Art As nozzle refractories used in continuous casting operation of steel, there are a long nozzle and a submerged nozzle. Here, the submerged nozzle will be described. That is, the immersion nozzle connects the two in order to supply molten steel from the tundish to the mold, and is attached to the tuyere at the bottom of the tundish. Between this tuyere and the immersion nozzle,
The joint material is filled in order to prevent molten steel from entering and preventing accidents such as hot water leakage. Usually, this joint material is made of water-mixed mortar, and is applied to the tuyere joint of the immersion nozzle to a predetermined thickness by hand or the like to form a joint. However, such a method of forming a joint material has a problem that it takes much time and effort to apply the mortar to the immersion nozzle with a constant thickness, and it is extremely difficult to adjust the thickness. In order to cope with this problem, a joint molding formed in advance is mounted on an immersion nozzle, and the immersion nozzle is joined to a tundish in this mounted state.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、目地用
成形体を用いてタンディッシュと浸漬ノズルとを接合す
る場合、この目地用成形体の寸法を前記浸漬ノズルの寸
法に正確に合致させることが難しく、これら両者の寸法
が合わない場合に浸漬ノズルに対し目地用成形体が位置
ずれを起こして接合面に目地用成形体の存在しない箇所
が生じてしまうという問題点がある。また、たとえ寸法
が合致していても浸漬ノズルを羽口に取り付ける際、浸
漬ノズルは目地用成形体を被せた状態で羽口の底部から
挿入されるため、羽口との間の摩擦によって目地用成形
体が下方にずれる。さらに、浸漬ノズルの保有熱あるい
は炉熱によって目地用成形体がずれることがある。この
ように目地用成形体がずれることにより、羽口と浸漬ノ
ズルとの接合上部に目地用成形体が介在しない部位(空
隙)が生じ、この空隙への溶鋼侵入により目地の先行溶
損を招き、目地用成形体はその機能を十分発揮できない
という問題点がある。
However, when the tundish and the immersion nozzle are joined using the joint molding, it is difficult to make the dimensions of the joint molding exactly match the dimensions of the immersion nozzle. However, when these two dimensions do not match, there is a problem that the joint forming body is displaced with respect to the immersion nozzle, and a portion where the joint forming body does not exist is generated on the joint surface. In addition, even when the dimensions match, when attaching the immersion nozzle to the tuyere, the immersion nozzle is inserted from the bottom of the tuyere while covering the joint forming body, so the friction between the tuyere and the joint The molded product is shifted downward. Further, the joint molding may be displaced due to the heat retained in the immersion nozzle or the furnace heat. Due to the displacement of the joint forming body, a portion (gap) where the joint forming body does not intervene occurs above the joint between the tuyere and the immersion nozzle, and molten steel penetrates into this gap, leading to premature melting of the joint. However, there is a problem that the joint molding cannot exert its function sufficiently.

【0004】本発明は、このような問題点を解消するこ
とを目的として、手間をかけずにかつ位置ずれを生じる
ことなく浸漬ノズルのようなノズル耐火物を羽口耐火物
に対して接合することのできる目地用成形体を提供しよ
うとするものである。
The present invention aims at solving such problems by joining a nozzle refractory such as an immersion nozzle to a tuyere refractory without any trouble and without positional displacement. It is an object of the present invention to provide a joint molding that can be used.

【0005】[0005]

【課題を解決するための手段および作用・効果】本発明
による目地用成形体は、前記目的を達成するために、溶
鋼容器の底部に位置する羽口耐火物と、上端部がこの羽
口耐火物に接合するノズル耐火物との接合面に介在され
る筒形の目地用成形体であって、前記ノズル耐火物の上
端部接合面の形状に合致する上方に先細りのテーパ部を
有するとともに、このテーパ部の上端に前記接合面より
上方で内側に屈曲した鍔を有することを特徴とするもの
である。
Means for Solving the Problems and Functions / Effects In order to achieve the above object, a joint molding according to the present invention is provided with a tuyere refractory located at the bottom of a molten steel container and a tuyere refractory at the upper end. A cylindrical joint forming body interposed on a joint surface with a nozzle refractory to be joined to an article, having a tapered portion tapered upward matching the shape of an upper end joining surface of the nozzle refractory, At the upper end of the tapered portion, there is provided a flange bent inward above the joining surface.

【0006】本発明の目地用成形体は、ノズル耐火物の
上端部接合面の形状に合致している上方に先細りのテー
パ部を有する形状とされ、かつそのテーパ部の上端が接
合面より上方で内側に屈曲形成されているので、ノズル
耐火物の頂部を覆うように被せた際、その内径がノズル
耐火物の頂部外径よりも多少大きくても、そのノズル耐
火物から滑落するのを防止することができる。また、ノ
ズル耐火物を取り付ける際の羽口との摩擦や受熱による
軟化が生じても、屈曲部による掛止作用によりずれを防
止することができる。したがって、このような目地用成
形体は位置ずれを生じずノズル耐火物に装着するのに手
間がかからないため、容易にノズル耐火物に接合するこ
とができる。また、前記ノズル耐火物を羽口耐火物から
取り外す際に、目地用成形体はノズル耐火物とともに羽
口耐火物から除去されるため、羽口耐火物に対してノズ
ル耐火物の取り外し・接合を速やかに行うことができ
る。
[0006] The joint molding according to the present invention has a tapered portion tapering upward so as to conform to the shape of the upper end joining surface of the nozzle refractory, and the upper end of the tapered portion is located above the joining surface. Since it is bent inward at the top, it prevents slipping from the nozzle refractory even when its inner diameter is slightly larger than the outer diameter of the top of the nozzle refractory when covered so as to cover the top of the nozzle refractory. can do. Further, even when the nozzle refractory is softened due to friction with the tuyere or heat reception when the refractory is attached, the displacement can be prevented by the locking action of the bent portion. Therefore, since such a joint forming body does not cause a positional shift and does not require much trouble to be mounted on the nozzle refractory, it can be easily joined to the nozzle refractory. Further, when the nozzle refractory is removed from the tuyere refractory, the joint molding is removed from the tuyere refractory together with the nozzle refractory, so that the nozzle refractory is removed and joined to the tuyere refractory. It can be done promptly.

【0007】[0007]

【発明の実施の形態】次に、本発明による目地用成形体
の具体的実施例につき、図面を参照しつつ説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the joint molding according to the present invention will be described with reference to the drawings.

【0008】図1に、本発明の一実施例に係る目地用成
形体の外観斜視図が示されている。図2に、タンディッ
シュに装着された本実施例の目地用成形体および浸漬ノ
ズルの縦断面図が示されている。
FIG. 1 is an external perspective view of a joint molding according to one embodiment of the present invention. FIG. 2 shows a longitudinal sectional view of the joint forming body and the immersion nozzle of the present embodiment mounted on a tundish.

【0009】本実施例の目地用成形体1は、タンディッ
シュ2の羽口れんが3と浸漬ノズル4との間の目地に装
着され、全体として截頭円錐形状であって、上端に浸漬
ノズル4の頂部を覆うように被さる鍔5を有する形状で
ある。また、目地材の充填を確実に行うために、目地用
成形体1の厚みは接合させる羽口れんが3と浸漬ノズル
4との目地の厚みより若干厚くされている。
The joint molding 1 of this embodiment is mounted on the joint between the tuyere brick 3 of the tundish 2 and the immersion nozzle 4 and has a truncated conical shape as a whole. And has a flange 5 that covers the top of the cover. In order to ensure the filling of the joint material, the joint forming body 1 is slightly thicker than the joint between the tuyere brick 3 and the immersion nozzle 4 to be joined.

【0010】前記目地用成形体1は上端に鍔5が設けら
れているため、浸漬ノズル4からの滑落あるいはずれを
防止でき、浸漬ノズル4と羽口れんが3との間に確実に
介在させることができる。したがって、目地用成形体1
は容易に浸漬ノズル4に装着することができる。また、
浸漬ノズル4を取り外す際には目地用成形体1は浸漬ノ
ズル4とともに羽口れんが3から除去される。したがっ
て、羽口れんが3の表面の整備は不要であり、速やかに
次の浸漬ノズルを装着することができる。
Since the joint molding 1 is provided with the flange 5 at the upper end, it can be prevented from slipping or slipping off from the immersion nozzle 4 and the tuyere brick can be reliably interposed between the immersion nozzle 4 and the tuyere brick 3. Can be. Therefore, the joint molding 1
Can be easily mounted on the immersion nozzle 4. Also,
When the immersion nozzle 4 is removed, the joint molding 1 is removed from the tuyere brick 3 together with the immersion nozzle 4. Therefore, the maintenance of the surface of the tuyere brick 3 is unnecessary, and the next immersion nozzle can be quickly mounted.

【0011】前記浸漬ノズル4は羽口れんが3に対して
その下方から挿入することで装着されるが、本実施例に
よる目地用成形体1は予め浸漬ノズル4の上部外周部に
被せておくことにより、浸漬ノズル4と羽口れんが3と
の間に充填される。その後、この目地用成形体1は熱間
で焼成された状態となって溶鋼、スラグ等の浸食、摩耗
に耐える緻密な目地を形成し、羽口れんが3に浸漬ノズ
ルを強固に接合させる。
The immersion nozzle 4 is mounted by being inserted into the tuyere brick 3 from below, and the joint forming body 1 according to the present embodiment is previously covered on the upper outer peripheral portion of the immersion nozzle 4. Thereby, the space between the immersion nozzle 4 and the tuyere brick is filled. Thereafter, the joint forming body 1 is hot-fired to form a dense joint that resists erosion and abrasion of molten steel, slag, etc., and the immersion nozzle is firmly joined to the tuyere brick 3.

【0012】前記目地用成形体1のセットから緻密な目
地形成までの一連の工程を例えば熱間で行なった場合、
タンディッシュに連結する浸漬ノズルを交換する際にも
タンディッシュを冷却する必要がなく、速やかに交換が
行われる。
When a series of steps from the setting of the joint forming body 1 to the formation of a dense joint are performed, for example, by hot working,
When the immersion nozzle connected to the tundish is replaced, the tundish does not need to be cooled, and the replacement is performed promptly.

【0013】前記目地用成形体1の組成としては、例え
ばその配合組成の合量100wt%のうち、耐火材料;
40〜90wt%および、熱硬化性樹脂と熱可塑性樹脂
またはピッチ類等とよりなる結合剤;10〜60wt%
より構成されるのが好ましい。また、前記配合組成の合
量100wt%に対して外掛けで炭素繊維;0.1〜1
0wt%を添加してもよい。これら各材料は、ミキサー
で混合されて目地材として調整され、この目地材を15
0℃に加熱して流動性を付与し、羽口れんが3と浸漬ノ
ズル4との間の目地に相当し、かつ上端に鍔5を有する
形状に加圧成形され、この後冷却および乾燥することに
よりキャップ状の目地用成形体1が得られる。
The composition of the joint forming body 1 is, for example, a refractory material in a total amount of 100 wt% of the compounding composition;
40 to 90 wt% and a binder comprising a thermosetting resin and a thermoplastic resin or pitches; 10 to 60 wt%
Preferably, it is composed of In addition, the carbon fiber is externally applied to the total amount of the blended composition of 100 wt%;
0 wt% may be added. Each of these materials is mixed by a mixer and adjusted as a joint material.
Heating to 0 ° C. to impart fluidity, pressure-molding into a shape corresponding to the joint between the tuyere brick 3 and the immersion nozzle 4 and having a flange 5 at the upper end, followed by cooling and drying As a result, a joint-shaped molded article 1 having a cap shape is obtained.

【0014】前述のような材質で構成される目地用成形
体1は常温においては適度な強度の保形性を有するた
め、ロボットによるハンドリングにも壊れることなくノ
ズル耐火物への装着がスムーズに行われ熱間での操作が
容易である。また、熱間においては適度な可塑性を呈し
接合部位への充填が円滑に行われる。
Since the joint molding 1 made of the above-mentioned material has a moderately strong shape-retaining property at room temperature, it can be smoothly mounted on the nozzle refractory without being broken by handling by a robot. It is easy to operate hot. In addition, when hot, it has appropriate plasticity, so that the joint portion is smoothly filled.

【図面の簡単な説明】[Brief description of the drawings]

【図1】図1は、本発明の一実施例に係る目地用成形体
の外観斜視図である。
FIG. 1 is an external perspective view of a joint molding according to one embodiment of the present invention.

【図2】図2は、タンディッシュに装着された本実施例
の目地用成形体および浸漬ノズルの縦断面図である。
FIG. 2 is a longitudinal sectional view of a joint forming body and a dipping nozzle of the present embodiment mounted on a tundish.

【符号の説明】[Explanation of symbols]

1 目地用成形体 2 タンディッシュ 3 羽口れんが 4 浸漬ノズル(ノズル) 5 鍔 DESCRIPTION OF REFERENCE NUMERALS 1 Joint molding 2 Tundish 3 Tuyere brick 4 Immersion nozzle (nozzle) 5 Flange

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI C04B 35/66 C04B 35/66 Q C09K 3/10 C09K 3/10 Z (72)発明者 礒野 潔 兵庫県姫路市広畑区富士町1番地 新日 本製鐵株式會社 広畑製鐵所内 (72)発明者 横山 洋一 兵庫県高砂市荒井町新浜1丁目3番1号 ハリマセラミック株式会社内 (72)発明者 岡田 辰雄 兵庫県姫路市広畑区大町1丁目21−2 株式会社岡田商会内 (56)参考文献 特開 平2−78890(JP,A) 特開 平3−221248(JP,A) 特公 昭61−14111(JP,B2) 実公 平1−33259(JP,Y2) (58)調査した分野(Int.Cl.7,DB名) C04B 37/00 B22D 11/10 330 B22D 41/54 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI C04B 35/66 C04B 35/66 Q C09K 3/10 C09K 3/10 Z (72) Inventor Kiyoshi Isono Fuji, Hirohata-ku, Himeji-shi, Hyogo 1-cho, Nippon Steel Corporation Hirohata Works (72) Inventor Yoichi Yokoyama 1-3-1, Shinhama, Araimachi, Takasago-shi, Hyogo Harima Ceramics Co., Ltd. (72) Inventor Tatsuo Okada Hirohata, Himeji-shi, Hyogo 1-21-2 Omachi-ku, Okada Shokai Co., Ltd. (56) References JP-A-2-78890 (JP, A) JP-A-3-221248 (JP, A) JP-B 61-14111 (JP, B2) 1-33259 (JP, Y2) (58) Field surveyed (Int. Cl. 7 , DB name) C04B 37/00 B22D 11/10 330 B22D 41/54

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 溶鋼容器の底部に位置する羽口耐火物
と、上端部がこの羽口耐火物に接合するノズル耐火物と
の接合面に介在される筒形の目地用成形体であって、前
記ノズル耐火物の上端部接合面の形状に合致する上方に
先細りのテーパ部を有するとともに、このテーパ部の上
端に前記接合面より上方で内側に屈曲した鍔を有するこ
とを特徴とする目地用成形体。
1. A tubular joint-formed body having a tuyere refractory located at the bottom of a molten steel container and a nozzle refractory having an upper end joined to the tuyere refractory. A joint having an upwardly tapered portion conforming to the shape of a joining surface of an upper end portion of the nozzle refractory, and a flange bent inward above the joining surface at the upper end of the tapered portion. Moldings.
JP8250381A 1996-09-20 1996-09-20 Joint molding Expired - Fee Related JP3068471B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8250381A JP3068471B2 (en) 1996-09-20 1996-09-20 Joint molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8250381A JP3068471B2 (en) 1996-09-20 1996-09-20 Joint molding

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP3320613A Division JP2644404B2 (en) 1991-12-04 1991-12-04 Joint molding

Publications (2)

Publication Number Publication Date
JPH09278556A JPH09278556A (en) 1997-10-28
JP3068471B2 true JP3068471B2 (en) 2000-07-24

Family

ID=17207079

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8250381A Expired - Fee Related JP3068471B2 (en) 1996-09-20 1996-09-20 Joint molding

Country Status (1)

Country Link
JP (1) JP3068471B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200478293Y1 (en) * 2014-08-27 2015-09-15 주식회사 로보로보 Toy airplane

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122542B (en) 2009-01-15 2012-03-15 Indref Oy Slide plate and lower nozzle combination and method for repairing slider plate and lower nozzle combination
JP7249106B2 (en) * 2018-03-27 2023-03-30 黒崎播磨株式会社 Inner body and manufacturing method thereof
CN113927026A (en) * 2021-09-07 2022-01-14 山东钢铁集团日照有限公司 Method for mounting anti-seepage steel split type nozzle pocket brick of double-flow slab continuous casting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200478293Y1 (en) * 2014-08-27 2015-09-15 주식회사 로보로보 Toy airplane

Also Published As

Publication number Publication date
JPH09278556A (en) 1997-10-28

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