JPS6135338Y2 - - Google Patents
Info
- Publication number
- JPS6135338Y2 JPS6135338Y2 JP7741382U JP7741382U JPS6135338Y2 JP S6135338 Y2 JPS6135338 Y2 JP S6135338Y2 JP 7741382 U JP7741382 U JP 7741382U JP 7741382 U JP7741382 U JP 7741382U JP S6135338 Y2 JPS6135338 Y2 JP S6135338Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- plate
- holding frame
- sliding nozzle
- sliding
- 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
Links
- 239000007789 gas Substances 0.000 description 27
- 239000011261 inert gas Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【考案の詳細な説明】
本考案は、溶鋼の酸化を防止したスライデイン
グノズル装置に関するものである。[Detailed Description of the Invention] The present invention relates to a sliding nozzle device that prevents oxidation of molten steel.
近時・取鍋、タンデツシユ等から溶鋼を注出す
る方法としてスライデイングノズル装置（以下、
SN装置と略す）が多用されるようになつた。し
かし、この装置は従来のストツパー装置に比べて
幾多の点で優れている反面、その構造上、上・下
のスライデイングノズルプレート（以下、プレー
トと略す）が接触する摺動面に間隙を生じ、この
個所から大気を巻込んで溶鋼が酸化し、鋼製品の
品質低下を来たすという問題があつた。 Recently, a sliding nozzle device (hereinafter referred to as
(abbreviated as SN device) has come into widespread use. However, while this device is superior in many respects to conventional stopper devices, its structure creates gaps on the sliding surfaces where the upper and lower sliding nozzle plates (hereinafter referred to as plates) come into contact. There was a problem in that the atmosphere was drawn in from this point and the molten steel oxidized, causing a decline in the quality of steel products.
そこで、不活性ガスにより大気を遮断し、溶鋼
の酸化を防止する方法が知られている。 Therefore, a method is known in which oxidation of molten steel is prevented by blocking the atmosphere with an inert gas.
しかし、従来知られているものは不活性ガスを
噴出するガス孔がプレートの摺動面に形成されて
いることから、SNプレートが構造的強度の低
下、熱衝撃による亀裂の誘発、地金引込み等を招
きたすく、また耐火物という材質上、ガス孔の形
成には相当な困難を要していた。 However, the conventionally known SN plates have gas holes that eject inert gas formed on the sliding surface of the plate, which causes a decrease in structural strength, induction of cracks due to thermal shock, and metal withdrawal. Furthermore, due to the refractory material, forming gas holes was extremely difficult.
本考案は、不活性ガスによる溶鋼の酸化を防止
した上記欠点のないSN装置を提供するもので、
その特徴とするところは、スライデイングノズル
プレートの保持枠外縁部の内側に凹溝を周設して
ガス留りとし、該ガス留りと直交した凹溝からな
る多数のガス孔を穿設し、かつ、前記ガス留りに
ガス導入管を接続してなるスライデイングノズル
装置である。 The present invention provides an SN device that prevents oxidation of molten steel by inert gas and does not have the above drawbacks.
The feature is that a concave groove is provided around the inside of the outer edge of the holding frame of the sliding nozzle plate to serve as a gas retainer, and a large number of gas holes are drilled in the concave grooves perpendicular to the gas retainer. and a sliding nozzle device in which a gas introduction pipe is connected to the gas reservoir.
以下、本考案の実施例を図面にもとずいて説明
する。第１図はSN装置の正面断面図であり、駆
動装置、上下ノズルなどは略す。第２図は下プレ
ート１とその保持枠２の平面図、第３図は、第１
図の要部拡大図である。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a front cross-sectional view of the SN device, and the driving device, upper and lower nozzles, etc. are omitted. Fig. 2 is a plan view of the lower plate 1 and its holding frame 2. Fig. 3 is a plan view of the lower plate 1.
FIG.
１，１１はプレート、２，１２は保持枠、３，
１３はノズル孔、４，１４はプレートを補強する
ための囲繞薄鉄板である。このように構成される
SN装置は取鍋、タンデツシユなどの底に付設さ
れ、駆動装置（図示省略）によつて下プレート１
を摺動させ、ノズル孔３，１３の開閉で溶鋼の流
出を制御する。 1 and 11 are plates, 2 and 12 are holding frames, 3,
13 is a nozzle hole, and 4 and 14 are surrounding thin iron plates for reinforcing the plate. configured like this
The SN device is attached to the bottom of a ladle, tundish, etc., and is driven by a drive device (not shown) to lower plate 1.
The outflow of molten steel is controlled by opening and closing the nozzle holes 3 and 13.
本考案ではこのSN装置に不活性ガス噴出機能
をもたせるため、スライデイングノズルプレート
１の保持枠２外縁部の内側にガス留り６を周設す
る。該ガス留り６は不活性ガスを保持枠２外縁部
の全体に行き渡らせる。 In the present invention, in order to provide the SN device with an inert gas jetting function, a gas retainer 6 is provided around the inside of the outer edge of the holding frame 2 of the sliding nozzle plate 1. The gas reservoir 6 spreads the inert gas over the entire outer edge of the holding frame 2.
さらに、保持枠２外縁部の内側に、前記のガス
留り６と直交した凹溝からなる多数のガス孔５を
穿設する。 Further, a large number of gas holes 5 made of grooves perpendicular to the gas retainers 6 are bored inside the outer edge of the holding frame 2.
したがつて、ガス留り６に接続したガス導入管
７からアルコンガスなどの不活性ガスを導入する
と、該ガスはガス留り６を通つて保持枠２の外縁
部全周に行き渡つた後、それぞれのガス孔５から
噴出するので、スライデイングノズルプレート
１，１２の摺動面の外周全体がガスシールされ
る。そして、プレート摺動面から大気が侵入する
のを不活性ガスによつて遮断し、溶鋼の酸化を防
止する。以上、下プレートの保持枠にガス孔を穿
設した場合について説明したが、同じ要領で上プ
レートの保持枠にガス孔を穿設しても良い。 Therefore, when an inert gas such as Alcon gas is introduced from the gas introduction pipe 7 connected to the gas reservoir 6, the gas passes through the gas reservoir 6 and spreads around the entire outer edge of the holding frame 2, and then Since the gas is ejected from each gas hole 5, the entire outer periphery of the sliding surfaces of the sliding nozzle plates 1 and 12 is sealed with gas. The inert gas blocks the atmosphere from entering through the sliding surface of the plate, thereby preventing oxidation of the molten steel. The case where the gas holes are formed in the holding frame of the lower plate has been described above, but the gas holes may be formed in the holding frame of the upper plate in the same manner.
不活性ガスは溶鋼流の作用によつて、プレート
１，１２のノズル孔３，１３に向つて吸引される
ので、0.5〜1.0Kg／cm2程度のガス圧で大気の遮断
を十分行なうことができる。 Since the inert gas is sucked toward the nozzle holes 3 and 13 of the plates 1 and 12 by the action of the molten steel flow, a gas pressure of about 0.5 to 1.0 Kg/cm 2 is sufficient to block the atmosphere. can.
本考案のSN装置によれば、不活性ガスの大気
遮断による溶鋼の酸化防止において、以上に述べ
たように不活性ガスを噴出させるガス孔をプレー
トの保持枠に穿設したので、プレートの摺動面に
形成した場合に見られるプレートの構造的強度の
低下、熱衝撃による亀裂発生の誘発、地金引込
み、あるいは切削加工が困難などの欠点を全くな
い。しかも、保持枠は恒久的な装置であるため、
交換部品であるプレートにそれぞれガス孔を穿設
するのに比べ、経済的にも有利である。 According to the SN device of the present invention, in order to prevent the oxidation of molten steel by blocking the inert gas from the atmosphere, the gas hole for ejecting the inert gas is bored in the holding frame of the plate as described above, so that the sliding of the plate is prevented. It does not have any of the disadvantages that occur when the plate is formed on a moving surface, such as a decrease in the structural strength of the plate, induction of cracks due to thermal shock, metal pull-in, or difficulty in machining. Moreover, since the holding frame is a permanent device,
It is also economically advantageous compared to drilling gas holes in each plate, which is a replacement part.
第１図は本考案実施例の断面図、第２図は第１
図における下プレートとその保持枠の平面図、第
３図は第１図の要部拡大図である。
１，１１……プレート、２，１２……保持枠、
３，１３……ノズル孔、４，１４……鉄板、５…
…ガス孔、６……ガス留り、７……ガス導入管。
Fig. 1 is a sectional view of the embodiment of the present invention, and Fig. 2 is a cross-sectional view of the embodiment of the present invention.
A plan view of the lower plate and its holding frame in the figure, and FIG. 3 is an enlarged view of the main part of FIG. 1. 1, 11... plate, 2, 12... holding frame,
3,13...Nozzle hole, 4,14...Iron plate, 5...
...Gas hole, 6...Gas retainer, 7...Gas introduction pipe.
Claims (1)
の内周に凹溝に周設してガス留りとし、該ガス留
りと直交した凹溝からなる多数のガス孔を穿設
し、かつ、前記ガス留りにガス導入管円接続して
なるスライデイングノズル装置。 A concave groove is provided around the inner periphery of the outer edge of the holding frame of the sliding nozzle plate to serve as a gas reservoir, and a large number of gas holes consisting of concave grooves orthogonal to the gas reservoir are bored, and the gas reservoir is A sliding nozzle device that connects the gas inlet pipe in a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741382U JPS584269U (en) | 1982-05-26 | 1982-05-26 | sliding nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741382U JPS584269U (en) | 1982-05-26 | 1982-05-26 | sliding nozzle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS584269U JPS584269U (en) | 1983-01-12 |
| JPS6135338Y2 true JPS6135338Y2 (en) | 1986-10-14 |
Family
ID=29873064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7741382U Granted JPS584269U (en) | 1982-05-26 | 1982-05-26 | sliding nozzle device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS584269U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5873728B2 (en) * | 2012-01-31 | 2016-03-01 | 東京窯業株式会社 | Gas seal type sliding nozzle device |
-
1982
- 1982-05-26 JP JP7741382U patent/JPS584269U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS584269U (en) | 1983-01-12 |
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