JPS6311099B2 - - Google Patents
Info
- Publication number
- JPS6311099B2 JPS6311099B2 JP11127181A JP11127181A JPS6311099B2 JP S6311099 B2 JPS6311099 B2 JP S6311099B2 JP 11127181 A JP11127181 A JP 11127181A JP 11127181 A JP11127181 A JP 11127181A JP S6311099 B2 JPS6311099 B2 JP S6311099B2
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- seal pipe
- vibration
- slag
- vibration detection
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 239000002893 slag Substances 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 9
- 238000011109 contamination Methods 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
- B22D11/186—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using electric, magnetic, sonic or ultrasonic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
この発明は取鍋から流出する溶鍋中にスラグ等
の異物が混入するのを防止するところのシール鋳
造におけるスラグ混入防止装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slag contamination prevention device in seal casting, which prevents foreign matter such as slag from being mixed into the molten ladle flowing out from the ladle.
従来、取鍋からタンデイシユ等への溶鋼の注入
に際し、殊に高級鋼の製造の場合には溶鋼の大気
酸化防止の必要からいわゆるオープン注入が避け
られ、取鍋底部の溶鋼流出ノズルとタンデイシユ
内との間にシールパイプが取付けられた。 Conventionally, when pouring molten steel from a ladle into a tundish, etc., so-called open pouring was avoided due to the need to prevent atmospheric oxidation of the molten steel, especially when manufacturing high-grade steel. A seal pipe was installed between them.
即ち、注入溶鋼がシールパイプ内を通されるこ
とにより溶鋼注入時における大気中のN2やO2と
の接触を防いで良質の鋳造製品を得ることが図ら
れたものである。 That is, by passing the injected molten steel through a seal pipe, it is possible to prevent contact with N 2 and O 2 in the atmosphere during the injection of molten steel, thereby obtaining a high-quality cast product.
しかしながら、注入される溶鋼中のスラグ混入
量については、オープン注入の場合ノズル直後の
注入溶鋼を目視して直ちにスラグの混入を判定し
溶鋼の注入を停止できるので、スラグの混入量を
十分低く押えることが可能であるが、シールパイ
プによる溶鋼注入の場合はタンデイシユ内におい
てスラグが溶鋼面上に浮上するまでスラグ混入時
期を知ることができず、そのため溶鋼中のスラグ
混入量が多くなることを避け難いという問題があ
つた。 However, regarding the amount of slag mixed into the injected molten steel, in the case of open injection, the amount of slag mixed in can be kept sufficiently low because the molten steel injected immediately after the nozzle can be visually checked, the presence of slag can be determined immediately, and the injection of molten steel can be stopped. However, when molten steel is injected using a sealed pipe, it is not possible to know when slag has been mixed in until the slag floats above the surface of the molten steel in the tundish. The problem was that it was difficult.
この発明はシールパイプ中を通過する溶鋼とス
ラグとの振動変化を振動検知手段により検知し、
溶鋼中のスラグの混入を早期に知ることによりシ
ール鋳造におけるスラグ混入の防止を図ることを
目的とするものである。 This invention uses a vibration detection means to detect vibration changes between molten steel and slag passing through a seal pipe,
The purpose of this study is to prevent slag contamination in seal casting by detecting the contamination of slag in molten steel at an early stage.
図面に基いてこの発明の一実施例を説明する。 An embodiment of the present invention will be described based on the drawings.
１は開閉手段（図示省略）を介して取鍋の底部
に連通可能な溶鋼流出ノズル、２はシールパイプ
で、同パイプの上端２ａが溶鋼流出ノズル１にカ
ツプリング３を介して断接可能に接続され下端２
ｂが取鍋の下方に配置したタンデイシユ内等に注
入形成される鋳造用溶鋼表面４に浸漬する如く配
設されている。 1 is a molten steel outflow nozzle that can communicate with the bottom of the ladle via an opening/closing means (not shown); 2 is a seal pipe, the upper end 2a of which is connectably connected to the molten steel outflow nozzle 1 via a coupling 3; bottom end 2
b is arranged so as to be immersed in the surface 4 of the molten steel for casting which is injected into a tundish placed below the ladle.
５はシールパイプ２の外周部に適宜設けられた
振動検出箇所で、シールパイプ２の外周部に張り
付けられた金属板より成つている。 Reference numeral 5 denotes a vibration detection point appropriately provided on the outer periphery of the seal pipe 2, and is made of a metal plate stuck to the outer periphery of the seal pipe 2.
６は振動検出箇所５に一端を接合した信号伝達
手段で、例えば約４ｍ長さの金属棒より成つてい
る。 Reference numeral 6 denotes a signal transmission means whose one end is connected to the vibration detection point 5, and is made of, for example, a metal rod about 4 m long.
７は信号伝達手段６の他端に接合した振動検知
手段で、シールパイプ２中を通過する溶鋼とスラ
グとの振動変化を信号伝達手段６を介して……例
えば電流の変化として……検知する装置より成つ
ている。 Reference numeral 7 denotes a vibration detection means connected to the other end of the signal transmission means 6, which detects vibration changes in the molten steel and slag passing through the seal pipe 2 via the signal transmission means 6...for example, as a change in current. It consists of a device.
８は制御操作手段で、例えば振動検知手段７と
の間に導線９を介して接続された発信器１０、同
発信器と導線１１を介して接続され発信器１０か
らの信号を受けて指示、記録、警報などを行つた
り、Ｐ・Ｉ・Ｄ制御などを行つたりする受信調節
器１２及び同受信調節器と導線１３を介して接続
され受信調節器１２からの信号を受けて前記溶鋼
流出ノズル１に設けた開閉手段を駆動するパワシ
リンダーなどよりなる駆動装置へ操作信号１５を
発信する操作器１４より構成されている。なお、
１６は受信調節器１２に結線した例えばAC100V
の操作電源、１７は操作器１４に結線した例えば
AC220Vの操作電源である。 Reference numeral 8 denotes a control operating means, for example, a transmitter 10 connected to the vibration detecting means 7 via a conductive wire 9; a transmitter 10 connected to the transmitter via a conductive wire 11; A receiving controller 12 that performs recording, alarms, etc. and P/I/D control, etc., and is connected to the receiving controller via a conductor 13 and receives a signal from the receiving controller 12 to control the molten steel. It consists of an operating device 14 that transmits an operating signal 15 to a drive device such as a power cylinder that drives an opening/closing means provided in the outflow nozzle 1. In addition,
16 is connected to the reception controller 12, for example, AC100V.
For example, the operating power supply 17 is connected to the operating device 14.
It is an AC220V operating power supply.
しかして、取鍋内の温度1600℃程度の溶鋼約90
トンが溶鋼流出ノズル１より連続鋳造用タンデイ
シユ内にシールパイプ２中を２〜３トン／分の流
速で注入され、その際シールパイプ２中を通過す
る溶鋼とスラグとの振動変化が振動検知手段７に
より検知された。 Therefore, the temperature of the molten steel in the ladle is about 1600℃.
A ton of molten steel is injected from a molten steel outflow nozzle 1 into a tundish for continuous casting through a seal pipe 2 at a flow rate of 2 to 3 ton/min, and at this time, vibration changes between the molten steel and slag passing through the seal pipe 2 are detected as vibration detection means. 7 was detected.
溶鋼流出末期における15トンの残量時点におい
ても振動は一定の固定値を保つが、その後比重７
の溶鋼に比重２〜３のスラグが混入し始めるとそ
の比重差等により振動数の低下が示された。 Even at the final stage of the molten steel spill, when 15 tons remain, the vibration remains at a constant fixed value, but after that the specific gravity increases to 7.
When slag with a specific gravity of 2 to 3 started to mix into the molten steel, the vibration frequency decreased due to the difference in specific gravity.
そして、制御操作手段８の作動により溶鋼流出
ノズル１の開閉手段が自動的に閉止され溶鋼の注
入は直ちに停止された。 Then, the opening/closing means of the molten steel outflow nozzle 1 was automatically closed by the operation of the control operation means 8, and the injection of molten steel was immediately stopped.
上述した如くこの発明は、取鍋の底部に連通し
且つ開閉手段を設けた溶鋼流出ノズル１に、シー
ルパイプ２の上端２ａを取付けると共に該シール
パイプ２の下端２ｂを取鍋の下方に配置したタン
デイシユ内等に注入し形成される鋳造用溶鋼表面
４に浸漬する如く配設し、シールパイプ２中を通
過する溶鋼とスラグとの振動変化を検知する振動
検知手段７をシールパイプ２の振動検出箇所５か
ら適宜離れた場所に信号伝達手段６を介在させて
設け、また振動検知手段７による前記振動変化の
検知により前記溶鋼流出ノズル２を閉止すること
ができる制御操作手段８を設けたものである。 As described above, in this invention, the upper end 2a of the seal pipe 2 is attached to the molten steel outflow nozzle 1 which communicates with the bottom of the ladle and is provided with an opening/closing means, and the lower end 2b of the seal pipe 2 is disposed below the ladle. Vibration detection means 7 is arranged so as to be immersed in the surface 4 of the molten steel for casting formed by pouring it into a tundish, etc., and detects the vibration change of the molten steel and slag passing through the seal pipe 2. A signal transmission means 6 is interposed at a location appropriately away from the point 5, and a control operation means 8 is provided which can close the molten steel outflow nozzle 2 by detecting the vibration change by the vibration detection means 7. be.
この発明によれば、取鍋中の溶鋼がタンデイシ
ユ内等にシールパイプ２中を通過して注入される
際の振動変化によりスラグ混入時期を早期に検知
できるため、取鍋内上層にあるスラグ等の異物の
混入を極力防止できて、特に高級鋼の鋳造におい
て優れた効果を発揮し得るものである。 According to this invention, the timing of slag contamination can be detected early based on vibration changes when molten steel in the ladle is injected into the tundish or the like through the seal pipe 2. It is possible to prevent the contamination of foreign matter as much as possible, and it can exhibit an excellent effect particularly in casting high-grade steel.
また、上述の実施例において制御操作手段８は
発信器１０、受信調節器１２などが使用されたが
コンピユータを付加してより高度な自動化を行わ
せることが可能であり、また一方振動検知手段７
及び制御操作手段８を全て人間が肩代りしたマニ
ユアル操作を行うこともできる。 Further, in the above embodiment, the transmitter 10, the reception adjuster 12, etc. were used as the control operation means 8, but it is possible to add a computer to perform more advanced automation, and on the other hand, the vibration detection means 7
It is also possible to perform manual operation in which the control operation means 8 is entirely handled by a human being.
即ち、シールパイプ２に信号伝達手段６つまり
金属棒の一端を当て、その他端を手に持つことに
より振動変化を感知し同時にノズルの閉止を手動
で行うものである。 That is, by applying one end of the signal transmitting means 6, that is, a metal rod, to the seal pipe 2 and holding the other end in the hand, changes in vibration are sensed, and at the same time, the nozzle is manually closed.
図面はこの発明に係るシール鋳造におけるスラ
グ混入防止装置の斜視図である。
１……溶鋼流出ノズル、２……シールパイプ、
２ａ……シールパイプ上端、２ｂ……シールパイ
プ下端、４……鋳造用溶鋼表面、５……振動検出
箇所、６……信号伝達手段、７……振動検知手
段、８……制御操作手段。
The drawing is a perspective view of a device for preventing slag mixing in seal casting according to the present invention. 1... Molten steel outflow nozzle, 2... Seal pipe,
2a... upper end of the seal pipe, 2b... lower end of the seal pipe, 4... molten steel surface for casting, 5... vibration detection location, 6... signal transmission means, 7... vibration detection means, 8... control operation means.
Claims (1)
鋼流出ノズルに、シールパイプの上端を取付ける
と共に該シールパイプの下端を取鍋の下方に配置
したタンデイシユ内等に注入し形成される鋳造用
溶鋼表面に浸漬する如く配設し、シールパイプ中
を通過する溶鋼とスラグとの振動変化を検知する
振動検知手段を、シールパイプの振動検出箇所か
ら適宜離れた場所に信号伝達手段を介在させて設
け、また振動検知手段による前記振動変化の検知
により前記溶鋼流出ノズルを閉止することができ
る制御操作手段を設けたことを特徴とするシール
鋳造におけるスラグ混入防止装置。1 For casting, which is formed by attaching the upper end of a seal pipe to a molten steel outflow nozzle that communicates with the bottom of the ladle and is equipped with an opening/closing means, and injecting the lower end of the seal pipe into a tundish placed below the ladle. Vibration detection means is disposed so as to be immersed in the surface of the molten steel and detects changes in vibration between the molten steel and slag passing through the seal pipe, and a signal transmission means is interposed at an appropriate distance from the vibration detection point of the seal pipe. 1. A device for preventing slag contamination in seal casting, further comprising a control operation means capable of closing the molten steel outflow nozzle by detecting the change in vibration by a vibration detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11127181A JPS5813467A (en) | 1981-07-15 | 1981-07-15 | Preventing device for slag inclusion in seal casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11127181A JPS5813467A (en) | 1981-07-15 | 1981-07-15 | Preventing device for slag inclusion in seal casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5813467A JPS5813467A (en) | 1983-01-25 |
| JPS6311099B2 true JPS6311099B2 (en) | 1988-03-11 |
Family
ID=14556977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11127181A Granted JPS5813467A (en) | 1981-07-15 | 1981-07-15 | Preventing device for slag inclusion in seal casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813467A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61127579A (en) * | 1984-11-27 | 1986-06-14 | 三菱電機株式会社 | Floor re-aligner for elevator |
| US6539805B2 (en) | 1994-07-19 | 2003-04-01 | Vesuvius Crucible Company | Liquid metal flow condition detection |
| CN105983673B (en) * | 2015-02-28 | 2018-07-06 | 宝山钢铁股份有限公司 | A kind of Con casting ladle based on ladle roughing slag detecting system pours control system and process control method eventually |
-
1981
- 1981-07-15 JP JP11127181A patent/JPS5813467A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5813467A (en) | 1983-01-25 |
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