JPS62142463U - - Google Patents
Info
- Publication number
- JPS62142463U JPS62142463U JP2918986U JP2918986U JPS62142463U JP S62142463 U JPS62142463 U JP S62142463U JP 2918986 U JP2918986 U JP 2918986U JP 2918986 U JP2918986 U JP 2918986U JP S62142463 U JPS62142463 U JP S62142463U
- Authority
- JP
- Japan
- Prior art keywords
- amount
- gas
- gas amount
- allowable
- molten steel
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000009749 continuous casting Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 17
- 241000277275 Oncorhynchus mykiss Species 0.000 claims 1
- 238000005266 casting Methods 0.000 claims 1
- 239000011261 inert gas Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
第１図は一般的な連続鋳造設備に本考案を実施
した例を示す構造図、第２図はボイル限界、健全
気泡発生限界、ノロ噛み発生限界を求めた際にお
ける通過溶鋼量とガス実体積との相関の一例を示
す図表、第３図は実操業におけるボイル発生状況
を、通過溶鋼量Ｖｌと吹き込みガスの実体積Ｖｇ
との関係に基づいて調査した結果の一例を示す図
表、第４図は一般的なガス吹込み用ノズルの断面
構造図である。
１；取鍋、２；タンデイツシユ、３；溶鋼、４
；浸漬ノズル、４１；上ノズル、４２；スライデ
イングノズル、４３；注入ノズル、５；鋳型、６
；ガス供給系、６０；流量調節弁、７；速度検出
装置、８；鋳片、９；重量検出装置、１０；吹込
みガス量制御装置、１０１；許容ガス量設定装置
、１０２；選択装置、１０３；補正装置、１０４
；制御装置、１０５；圧力演算装置。
Figure 1 is a structural diagram showing an example of implementing the present invention in general continuous casting equipment, and Figure 2 is the amount of molten steel passing through and the actual gas volume when determining the boil limit, sound bubble generation limit, and slag bite generation limit. Figure 3 is a chart showing an example of the correlation between
FIG. 4 is a diagram showing an example of the results of investigation based on the relationship between the two, and FIG. 4 is a cross-sectional structural diagram of a general gas blowing nozzle. 1; ladle, 2; tundish, 3; molten steel, 4
Immersion nozzle, 41; Upper nozzle, 42; Sliding nozzle, 43; Injection nozzle, 5; Mold, 6
; Gas supply system, 60; Flow rate control valve, 7; Speed detection device, 8; Slab, 9; Weight detection device, 10; Blowing gas amount control device, 101; Allowable gas amount setting device, 102; Selection device, 103; correction device, 104
;Control device, 105;Pressure calculation device.
Claims (1)
ズルを介して不活性ガスの吹込みを行いつつ連続
鋳造鋳型に注入するに際して前記吹込みガス量を
制御する装置であつて、少なくとも、イ当該操業
時に実測される溶鋼ヘツドと、鋳片の巾、厚み、
鋳造速度より求められる溶鋼流量とから所定の演
算式に基づいてノズル詰まり限界ガス量を算出し
、許容ノズル詰まりガス量を設定する手段１０１
ａ、及び予め求められたボイル発生限界ガス量と
前記溶鋼流量との相関に基づき当該操業時の前記
溶鋼流量から許容ボイルガス量を設定する手段１
０１ｂとを備えた許容ガス量設定装置１０１と、
ロガス吹込み量大許容値を前記許容ボイルガス量
以下に、最小許容値を前記許容ノズル詰まりが入
量以上とし、かつ最経済性もしくは操業安定性を
基準として前記許容ガス量設定装置から入力され
る設定許容ガス量のいずれかを選択する選択装置
１０２と、ハ前記選択装置で選択された設定許容
ガス量を、予め求めたノズル特性の変化に対応す
る有効吹込み量の変動係数に基づいて補正する手
段１０３ａ、及び前記設定ガス量を標準ガス量に
換算する手段１０３ｂのいずれか一つもしくは双
方を備えた補正装置１０３と、ニ前記補正装置か
らのガス量に基づいてガス供給系の流量調整装置
を調節し、吹込みガス量を制御する制御装置１０
４とから構成されたことを特徴とする吹込みガス
量制御装置。 A device for controlling the amount of gas blown into a continuous casting mold when molten steel stored in a tundish is injected into a continuous casting mold while blowing inert gas through a submerged nozzle; The width and thickness of the molten steel head, slab width,
Means 101 for calculating the nozzle clogging limit gas amount based on a predetermined calculation formula from the molten steel flow rate determined from the casting speed and setting the allowable nozzle clogging gas amount
a, and means 1 for setting an allowable boil gas amount from the molten steel flow rate during the relevant operation based on the correlation between the boil generation limit gas amount determined in advance and the molten steel flow rate;
01b, an allowable gas amount setting device 101,
The maximum allowable amount of log gas blowing is set to be less than or equal to the allowable boil gas amount, the minimum allowable value is set to be greater than or equal to the allowable nozzle clogging input amount, and is input from the allowable gas amount setting device based on the most economical efficiency or operational stability. a selection device 102 for selecting one of the set permissible gas amounts; and c) correcting the set permissible gas amount selected by the selection device based on a coefficient of variation of the effective blowing amount corresponding to a change in nozzle characteristics determined in advance. a correction device 103 comprising one or both of a means 103a for converting the set gas amount into a standard gas amount, and a means 103b for converting the set gas amount into a standard gas amount; Control device 10 for adjusting the device and controlling the amount of gas blown
4. A blowing gas amount control device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2918986U JPH0341884Y2 (en) | 1986-03-03 | 1986-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2918986U JPH0341884Y2 (en) | 1986-03-03 | 1986-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62142463U true JPS62142463U (en) | 1987-09-08 |
| JPH0341884Y2 JPH0341884Y2 (en) | 1991-09-03 |
Family
ID=30832856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2918986U Expired JPH0341884Y2 (en) | 1986-03-03 | 1986-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341884Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0248267U (en) * | 1988-09-21 | 1990-04-03 |
-
1986
- 1986-03-03 JP JP2918986U patent/JPH0341884Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0248267U (en) * | 1988-09-21 | 1990-04-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0341884Y2 (en) | 1991-09-03 |
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