JPH07100606A - Structure of fit part for mounting casting nozzle - Google Patents
Structure of fit part for mounting casting nozzleInfo
- Publication number
- JPH07100606A JPH07100606A JP25180993A JP25180993A JPH07100606A JP H07100606 A JPH07100606 A JP H07100606A JP 25180993 A JP25180993 A JP 25180993A JP 25180993 A JP25180993 A JP 25180993A JP H07100606 A JPH07100606 A JP H07100606A
- Authority
- JP
- Japan
- Prior art keywords
- mortar
- nozzle
- fitting
- gap
- inclining
- 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.)
- Granted
Links
Landscapes
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶鋼など溶融金属の鋳
造に用いる浸漬ノズルを取鍋あるいはタンディッシュの
溶湯抽出のための下ノズルの下端に取付けるための嵌合
取付け構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting mounting structure for mounting a dipping nozzle used for casting molten metal such as molten steel on the lower end of a lower nozzle for extracting molten metal from a ladle or a tundish.
【０００２】[0002]
【従来の技術】従来から、鋼の連続鋳造において、溶鋼
を収容した取鍋とモールドの間には、一旦溶鋼を受けて
モールドへ溶鋼を注入するタンディッシュが配置されて
おり、この取鍋とタンディッシュとの間と、タンディッ
シュとモールドとの間は、溶鋼の酸化を防止するため
に、それぞれロングノズルと浸漬ノズルと称する鋳造ノ
ズルが配置されており、溶鋼はこの鋳造ノズルを通って
流下する。2. Description of the Related Art Conventionally, in continuous casting of steel, a tundish for receiving molten steel once and pouring the molten steel into the mold is arranged between the ladle containing the molten steel and the mold. Casting nozzles called long nozzles and immersion nozzles are placed between the tundish and between the tundish and the mold, respectively, in order to prevent oxidation of the molten steel, and the molten steel flows down through the casting nozzle. To do.
【０００３】この鋳造ノズルは、例えば、特公昭４９−
２１０１６号公報、実公昭５４−３９４５３号公報等に
記載されているように、タンディッシュ底部の流下孔に
設けられたタンディッシュノズルあるいは、さらに、こ
の下方に設けられた溶鋼の流下流量調節のためのスライ
ディングノズルプレートの下ノズルの下端と嵌合面を形
成し、さらに、この嵌合面に適当な厚みのモルタルを施
し、その面に、浸漬ノズルの上端の嵌合面を締め付けて
連結している。This casting nozzle is disclosed in, for example, Japanese Patent Publication No. Sho 49-
No. 21016, Japanese Utility Model Publication No. 54-39453, etc., for adjusting the flow rate of the molten steel provided below the tundish nozzle provided in the flow-down hole at the bottom of the tundish. Form the mating surface with the lower nozzle of the lower nozzle of the sliding nozzle plate, and then apply mortar of appropriate thickness to this mating surface, and connect the mating surface at the upper end of the immersion nozzle by tightening it. There is.
【０００４】このモルタル層を設けた嵌合面への浸漬ノ
ズルの締付けに際して、モルタルが外方に押し出され
て、嵌合面のモルタル量が不足してシール性が低下する
場合がある。このシール性の低下は流下溶鋼の酸化をも
たらし、耐火物の異常溶損が発生する原因ともなる。When the immersion nozzle is tightened on the fitting surface provided with the mortar layer, the mortar may be pushed outward, and the amount of mortar on the fitting surface may be insufficient, resulting in a decrease in sealing performance. This deterioration of the sealing property causes the flowing molten steel to be oxidized, which also causes abnormal melting loss of the refractory material.
【０００５】この浸漬ノズルの嵌合に際してのモルタル
の逃げによる嵌合面のモルタル量の不足を補充するため
に、特開平５−７７００３号公報には、浸漬ノズルの嵌
合先端部に、嵌合対象部との間隙を大きく取ってモルタ
ルの溜り部を形成した構造が開示されている。これによ
って、浸漬ノズル先端の相手嵌合部との締付けによって
モルタルが流出しても、この溜りからモルタルが補充さ
れて、シール性が維持されるという利点がある。In order to supplement the shortage of the amount of mortar on the fitting surface due to the escape of mortar when fitting the immersion nozzle, Japanese Patent Laid-Open No. 5-77003 discloses a fitting tip portion of the immersion nozzle. A structure is disclosed in which a large gap between the target portion and the mortar pool is formed. As a result, even if the mortar flows out due to the tightening of the tip of the immersion nozzle with the mating fitting portion, the mortar is replenished from this pool and the sealability is maintained.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このモ
ルタルの溜りは、外の雰囲気に開放されており、モルタ
ルの酸化による劣化が生じ、内方嵌合部への供給される
モルタルの量は少なく、モルタルの無駄が生じ、また、
嵌合面が少なくなり、嵌合部による浸漬ノズルの支持力
が低下して、別途に浸漬ノズルと嵌合相手側との保持構
造を必要とする等の問題がある。However, since the pool of mortar is open to the outside atmosphere, deterioration of the mortar due to oxidation occurs, and the amount of mortar supplied to the inner fitting portion is small. Wasted mortar,
There are problems that the fitting surface is reduced, the supporting force of the immersion nozzle by the fitting portion is reduced, and a separate holding structure for the immersion nozzle and the mating partner is required.
【０００７】本発明の目的は、モルタルの溜り部を有す
る浸漬ノズルの溶融金属容器の流下ノズルとのモルタル
を介しての嵌合取付け構造において、モルタルの溜り形
成構造を改善して、嵌合強度が大きく、しかも、シール
のためのモルタルの量を低減することができる上に、溜
り部に残留するモルタルのシール機能を充分に発揮する
ことができるための浸漬ノズル又はロングノズル等の嵌
合部構造を提供することにある。The object of the present invention is to improve the mortar pool formation structure in the fitting mounting structure of the immersion nozzle having the mortar pool part with the downflow nozzle of the molten metal container via the mortar to improve the fitting strength. Is large, and moreover, the amount of mortar for sealing can be reduced, and at the same time, a fitting part such as a dipping nozzle or a long nozzle for sufficiently exhibiting the sealing function of the mortar remaining in the reservoir part. To provide the structure.
【０００８】[0008]
【課題を解決するための手段】本発明に係る鋳造ノズル
の取付け嵌合部の構造は、相手側との間に、下面部と同
下面部に続く傾斜部からなるモルタル材を充填する嵌合
間隙を設けると共に、前記傾斜部の下方にモルタル等目
材地材の溜り部を形成したことを特徴とする。The structure of the mounting and fitting portion of the casting nozzle according to the present invention is such that the mating member is filled with a mortar material composed of a lower surface portion and an inclined portion continuing from the lower surface portion between the mating member and the mating member. It is characterized in that a gap is provided and a reservoir for the base material for mortar such as mortar is formed below the inclined portion.
【０００９】この溜りを形成するための具体的な手段と
しては、嵌合相手側との傾斜面の角度を変えて下方の間
隙を大きく形成して、この大きい間隙部分をモルタルの
溜りとすること、あるいは、浸漬ノズルの嵌合のための
傾斜面に窪みを設けて、この窪みを溜りとすること等が
考えられる。As a concrete means for forming this pool, the angle of the inclined surface with the mating partner side is changed to form a large lower gap, and this large gap portion is used as the mortar pool. Alternatively, it is conceivable to provide a recess on the inclined surface for fitting the immersion nozzle and use this recess as a reservoir.
【００１０】[0010]
【作用】下面部と同下面部に続く傾斜部の下方に充填目
地材であるモルタルを収納する溜りを形成したことによ
って、従来の嵌合上端に開口した溜りを設ける場合と比
較して、嵌合面を長く取ることができ、浸漬ノズルの保
持強度を低減することなく、嵌合部にモルタルを残留さ
せることができ、シール機能を低下させることがない。By forming the reservoir for storing the mortar, which is the filler joint material, under the lower surface and the sloped portion continuing to the lower surface, the fitting is made as compared with the conventional case where an opening at the upper end of fitting is provided. The mating surface can be taken long, the mortar can be left in the fitting portion without reducing the holding strength of the immersion nozzle, and the sealing function is not deteriorated.
【００１１】[0011]
【実施例】図１は本発明を、浸漬ノズル１をスライディ
ングノズルプレートの下ノズル２に連結するのに適用し
た実施例を示す図、図２は、図１に示す浸漬ノズル１の
上端と下ノズル２の下端に形成されるモルタル充填用の
間隙３の状態の説明図である。1 is a view showing an embodiment in which the present invention is applied to connect an immersion nozzle 1 to a lower nozzle 2 of a sliding nozzle plate, and FIG. 2 is an upper end and a lower part of the immersion nozzle 1 shown in FIG. It is explanatory drawing of the state of the gap 3 for mortar filling formed in the lower end of the nozzle 2.
【００１２】同図に示すように、浸漬ノズル１の上端に
は、下ノズル２の下端面２１に対応して嵌合下面１１が
形成され、この嵌合下面１１に続いて、下ノズル２の下
端の傾斜側周面２２に対応して傾斜側面１２が形成さ
れ、それぞれの嵌合面の間には、モルタルを充填する間
隙３が形成されている。浸漬ノズル１の傾斜側面１２の
垂直軸との傾斜角は、これに嵌合する下ノズル２の下端
の傾斜側周面の垂直軸との傾斜角より小さく形成され
て、その傾斜側面１２の下端位置の間隙をモルタルの溜
り部４として形成している。As shown in the figure, a fitting lower surface 11 is formed at the upper end of the immersion nozzle 1 so as to correspond to the lower end surface 21 of the lower nozzle 2. Following this fitting lower surface 11, the lower nozzle 2 The inclined side surface 12 is formed corresponding to the inclined side peripheral surface 22 at the lower end, and the gap 3 for filling the mortar is formed between the fitting surfaces. The inclination angle of the inclined side surface 12 of the immersion nozzle 1 with respect to the vertical axis is smaller than the inclination angle of the lower side of the lower nozzle 2 fitted thereto with the vertical axis of the inclined side peripheral surface, and the lower end of the inclined side surface 12 is formed. The position gap is formed as a mortar pool 4.
【００１３】また、図２図に明瞭に示すように、それぞ
れの側面の間に形成される間隙３において、頂部３１と
底部３２とのそれぞれの間隙ａ1 とａ2 とを、ａ1 ＜ａ
2 の関係に形成し、そこに溜り部４を形成する。Further, as clearly shown in FIG. 2, in the gap 3 formed between the respective side surfaces, the respective gaps a 1 and a 2 between the top portion 31 and the bottom portion 32 are defined as a 1 <a.
It forms in the relationship of 2 , and the reservoir 4 is formed there.
【００１４】この溜り部４によって、浸漬ノズル１の嵌
合下面１１が下ノズル２の下端面２１に押し付けられ
て、その間隙に充填されたモルタルが矢印方向に押し出
されて溜り部４中に入り、その溜り部４のモルタルが一
旦押し出されたのちでも、その間隙を埋めることにな
り、常にシール状態は維持されることになる。By the pool portion 4, the fitting lower surface 11 of the immersion nozzle 1 is pressed against the lower end surface 21 of the lower nozzle 2, and the mortar filled in the gap is pushed out in the direction of the arrow to enter the pool portion 4. Even after the mortar in the reservoir 4 is once extruded, the gap is filled and the sealed state is always maintained.
【００１５】上記ａ1 とａ2 を種々設定し、溶融金属の
鋳造を行い得られた綱中の欠陥を観察して得た結果を表
１に示す。Table 1 shows the results obtained by observing defects in the steel obtained by casting molten metal with various settings of a 1 and a 2 .
【００１６】[0016]
【表１】 ａ1 ／ａ2 を０．８以下に設定することにより嵌合部か
らの空気吸い込みが激減し、欠陥の少ない良好な綱材が
得られる。[Table 1] By setting a 1 / a 2 to 0.8 or less, air intake from the fitting portion is drastically reduced, and a good steel material with few defects can be obtained.
【００１７】また、本発明で使用するモルタルとしては
特に制限はなく、アルミナ質，マグネシア質等の一般的
なモルタルが使用でき、また、施工時に可塑性を有する
シート状のジョイント材を嵌合面に張り付け、これを圧
着することによっても同様の効果を発揮することができ
る。The mortar used in the present invention is not particularly limited, and general mortar such as alumina and magnesia can be used, and a sheet-like joint material having plasticity is used as a fitting surface at the time of construction. The same effect can be exhibited by pasting and crimping.
【００１８】[0018]
【発明の効果】本発明によって、以下の効果を奏するこ
とができる。According to the present invention, the following effects can be obtained.
【００１９】（１）比較的少量のモルタルによって、完
全にシール状態を維持できる。(1) With a relatively small amount of mortar, a completely sealed state can be maintained.
【００２０】（２）嵌合部、モルタル目地材の溜り部が
モルタルの流出方向に先細りに構成されているため、セ
ット時にモルタルの逃げがなく、モルタルに圧縮力が働
きモルタルが緻密化し、モルタルのシール性が向上す
る。(2) Since the fitting portion and the pool portion of the mortar jointing material are tapered in the mortar outflow direction, there is no escape of the mortar at the time of setting, the compressive force acts on the mortar, and the mortar becomes denser. The sealing property of is improved.
【００２１】（３）嵌合部上部が従来より狭く規制され
るために、浸漬ノズルと下部ノズルとの接合面における
偏芯度合いを少なくできる。(3) Since the upper portion of the fitting portion is restricted to be narrower than the conventional one, the degree of eccentricity at the joint surface between the immersion nozzle and the lower nozzle can be reduced.
【図１】 本発明の実施例を示す。FIG. 1 shows an embodiment of the present invention.
【図２】 図１に示す嵌合部の説明図である。FIG. 2 is an explanatory view of a fitting portion shown in FIG.
１ 浸漬ノズル １１ 嵌合下面 １２ 傾斜
側面 ２ スライディングノズルプレートの下ノズル ２１ 下端面 ２２ 傾斜側周面 ３ モルタル充填間隙 ３１ 頂部 ３２
底部 ４ 溜り部DESCRIPTION OF SYMBOLS 1 Immersion nozzle 11 Lower fitting surface 12 Inclined side surface 2 Lower nozzle of sliding nozzle plate 21 Lower end surface 22 Inclined side peripheral surface 3 Mortar filling gap 31 Top 32
Bottom 4 Reservoir
───────────────────────────────────────────────────── フロントページの続き (72)発明者 永利 憲一 福岡県北九州市八幡西区東浜町１番１号 黒崎窯業株式会社内 (72)発明者 井上 敬三 大阪市北区梅田二丁目３番24号 合同製鐵 株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenichi Nagatoshi 1-1 Higashihama-cho, Hachimansai-ku, Kitakyushu, Fukuoka Prefecture Kurosaki Ceramics Co., Ltd. (72) Keizo Inoue 2-3-24 Umeda, Kita-ku, Osaka Steelmaking Co., Ltd.
Claims (1)
合取付け構造において、嵌合相手側との間に、下面部と
同下面部に続く傾斜部からなるモルタル材を充填する嵌
合間隙を設けると共に、前記傾斜部下方の間隙を傾斜部
上方より大きく形成した鋳造ノズルの嵌合部の構造。1. In a fitting mounting structure for a casting nozzle having a mortar reservoir, a fitting gap for filling a mortar material composed of a lower surface portion and an inclined portion continuing from the lower surface portion is provided between the mating counterpart and the fitting counterpart. In addition, the structure of the fitting portion of the casting nozzle in which the gap below the inclined portion is formed larger than that above the inclined portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25180993A JP3250767B2 (en) | 1993-10-07 | 1993-10-07 | Structure of the fitting part for mounting the casting nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25180993A JP3250767B2 (en) | 1993-10-07 | 1993-10-07 | Structure of the fitting part for mounting the casting nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07100606A true JPH07100606A (en) | 1995-04-18 |
| JP3250767B2 JP3250767B2 (en) | 2002-01-28 |
Family
ID=17228250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25180993A Expired - Fee Related JP3250767B2 (en) | 1993-10-07 | 1993-10-07 | Structure of the fitting part for mounting the casting nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3250767B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010207848A (en) * | 2009-03-10 | 2010-09-24 | Nippon Steel Corp | Long nozzle and method of manufacturing the same |
| JPWO2014203956A1 (en) * | 2013-06-20 | 2017-02-23 | 日立金属株式会社 | Casting article manufacturing method, casting apparatus, and air supply nozzle used in the casting apparatus |
-
1993
- 1993-10-07 JP JP25180993A patent/JP3250767B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010207848A (en) * | 2009-03-10 | 2010-09-24 | Nippon Steel Corp | Long nozzle and method of manufacturing the same |
| JPWO2014203956A1 (en) * | 2013-06-20 | 2017-02-23 | 日立金属株式会社 | Casting article manufacturing method, casting apparatus, and air supply nozzle used in the casting apparatus |
| US10213828B2 (en) | 2013-06-20 | 2019-02-26 | Hitachi Metals, Ltd. | Method for producing castings, casting apparatus, and gas-blowing nozzle used in casting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3250767B2 (en) | 2002-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |