JPS6135337Y2 - - Google Patents
Info
- Publication number
- JPS6135337Y2 JPS6135337Y2 JP7741282U JP7741282U JPS6135337Y2 JP S6135337 Y2 JPS6135337 Y2 JP S6135337Y2 JP 7741282 U JP7741282 U JP 7741282U JP 7741282 U JP7741282 U JP 7741282U JP S6135337 Y2 JPS6135337 Y2 JP S6135337Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- plate
- holding frame
- molten steel
- inert gas
- 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
- 239000011819 refractory material Substances 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000011261 inert gas Substances 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
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
きやすく、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 nature of the refractory material, it was extremely difficult to form gas holes.
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周に、ガス留りとな
る凹溝を内設する多孔質耐火物を周設し、かつ、
前記凹溝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 porous refractory material with grooves for gas retention is installed around the inner periphery of the outer edge of the holding frame of the sliding nozzle plate, and
This is a sliding nozzle device in which a gas introduction pipe is connected to the groove.
以下、本考案を図面に示す実施例にもとづいて
説明する。第１図はSN装置の要部断面図であ
り、駆動装置、上・下ノズル等は略す。第２図
は、第１図における下プレート１とその保持枠２
の平面図、第３図は、第１図の要部拡大図を示
す。 Hereinafter, the present invention will be explained based on embodiments shown in the drawings. FIG. 1 is a cross-sectional view of the main parts of the SN device, and the drive device, upper and lower nozzles, etc. are omitted. Figure 2 shows the lower plate 1 and its holding frame 2 in Figure 1.
3 shows an enlarged view of the main part of FIG. 1.
１，１１はプレート、２，１２は保持枠、３，
１３はノズル孔、４，１４はプレートを囲繞した
鉄板である。このように構成されるSN装置は、
取鍋、タンデツシユ等の底に付設され、固定され
た上プレート１１に対し、駆動装置（図示省略）
によつて左右に下プレート１を摺動させ、ノズル
孔３，１３の開閉によつて溶鋼の流出を制御する
ものである。 1 and 11 are plates, 2 and 12 are holding frames, 3,
13 is a nozzle hole, and 4 and 14 are iron plates surrounding the plate. The SN device configured in this way is
A drive device (not shown) is attached to the bottom of a ladle, tundish, etc., and connects it to the fixed upper plate 11.
The lower plate 1 is slid left and right by the nozzle holes 3 and 13, and the outflow of molten steel is controlled by opening and closing the nozzle holes 3 and 13.
そして本考案においては、保持枠２の側縁に、
ガス留り６となる凹溝を内設した多孔質耐火物を
周設し、これをガス孔５とする。 In the present invention, on the side edge of the holding frame 2,
A porous refractory material having a groove therein serving as a gas retainer 6 is provided around the gas hole 5.
このように構成した本考案実施例によれば、使
用に際してガス導入管７から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、ガス孔５から噴出す
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。ガス孔５は多孔質耐火物であるため、保持
枠２の外縁部において、不活性ガスの噴出はきわ
めて均一である。 According to the embodiment of the present invention configured in this way, when inert gas is introduced from the gas introduction pipe 7 during use, the gas passes through the gas reservoir 6 and spreads around the entire outer edge of the holding frame 2, and then It is ejected from the gas hole 5. The inert gas is used to block atmospheric air from entering through the sliding surface of the plate, thereby preventing oxidation of the molten steel. Since the gas holes 5 are made of porous refractory material, the inert gas is ejected extremely uniformly at the outer edge of the holding frame 2.
なお、以上の実施例では下プレートの保持枠に
ガス孔を穿設した場合についてのみ説明したが、
同じ要領で上プレートの保持枠にガス孔を穿設し
てもよいことはもちろんである。 In addition, in the above embodiment, only the case where gas holes were bored in the holding frame of the lower plate was explained.
Of course, 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出来る。 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. I can do it.
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
し、あるいは切削加工が困難などの欠点が全くな
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. There are no disadvantages such as a decrease in the structural strength of the plate, induction of cracks due to thermal shock, pull-in of metal, or difficulty in machining that occurs when the plate is formed on a moving surface. 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.
FIG. 3 is a plan view of the lower plate and its holding frame, 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、ガス留となる凹溝を内設する多孔質耐
火物を周設し、かつ、前記凹溝にガス導入管を接
続してなるスライデイングノズル装置。 A sliding nozzle in which a porous refractory material with grooves for gas retention is provided around the inner circumference of the outer edge of the holding frame of the sliding nozzle plate, and a gas introduction pipe is connected to the grooves. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741282U JPS584268U (en) | 1982-05-26 | 1982-05-26 | sliding nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7741282U JPS584268U (en) | 1982-05-26 | 1982-05-26 | sliding nozzle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS584268U JPS584268U (en) | 1983-01-12 |
| JPS6135337Y2 true JPS6135337Y2 (en) | 1986-10-14 |
Family
ID=29873062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7741282U Granted JPS584268U (en) | 1982-05-26 | 1982-05-26 | sliding nozzle device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS584268U (en) |
-
1982
- 1982-05-26 JP JP7741282U patent/JPS584268U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS584268U (en) | 1983-01-12 |
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