JPS6144921B2 - - Google Patents
Info
- Publication number
- JPS6144921B2 JPS6144921B2 JP53095466A JP9546678A JPS6144921B2 JP S6144921 B2 JPS6144921 B2 JP S6144921B2 JP 53095466 A JP53095466 A JP 53095466A JP 9546678 A JP9546678 A JP 9546678A JP S6144921 B2 JPS6144921 B2 JP S6144921B2
- Authority
- JP
- Japan
- Prior art keywords
- charging
- ferroalloy
- speed
- input
- tapping
- 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
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 37
- 238000010079 rubber tapping Methods 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/005—Manufacture of stainless steel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Description
【発明の詳細な説明】
本発明は製鉄所での転炉設備制御に係り、特に
合金鉄の投入において最適な投入を可能とする合
金鉄投入制御方式に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to converter equipment control in a steelworks, and particularly to a ferroalloy charging control system that enables optimal charging of ferroalloy.
従来の合金鉄の投入は、投入のタイミングを人
間が判断し投入装置に対して指示していた。この
方法では、実際的に最適な条件によつて投入する
事は極めて困難であるという欠点を有していた。 Conventionally, when introducing ferroalloy, humans judged the timing of injection and gave instructions to the injection device. This method has the disadvantage that it is extremely difficult to actually introduce the material under optimal conditions.
本発明の目的は、合金鉄の投入タイミングを自
動的に認識し、更に該当タイミングで最適な量を
投入する事が可能な合金鉄投入制御方式の提供に
ある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a ferroalloy input control system that automatically recognizes the timing of ferroalloy input and can input an optimal amount at the appropriate timing.
上記目的を達成するため本発明は、出鋼の階段
で合金鉄を投入する際、実測した出鋼量を基準と
して合金鉄の投入開始タイミング及び終了タイミ
ングを得るようにしたものである。 In order to achieve the above object, the present invention is such that, when charging ferroalloy at the stage of tapping, the timing to start and end the charging of ferroalloy is determined based on the actually measured amount of tapped steel.
また、本発明は、実測した出鋼量を基に算出し
た出鋼速度より合金鉄の投入速度を求めてこれを
基に合金鉄の投入制御を開始し、投入中には合金
鉄の投入速度を実測し、出鋼速度に応じた終了タ
イミングを得るように合金鉄の投入速度を補正す
るようにしたものである。 In addition, the present invention calculates the ferroalloy charging speed from the tapping speed calculated based on the actually measured steel tapping amount, starts the ferroalloy charging control based on this, and during charging, the ferroalloy charging speed is is actually measured, and the ferroalloy input speed is corrected to obtain the end timing that corresponds to the tapping speed.
第１図は本発明の一実施例ブロツク図である。
投入する合金鉄は投入ホツパー１より投入フイー
ダー２を介して溶鋼鍋２０に投入される。 FIG. 1 is a block diagram of one embodiment of the present invention.
The ferroalloy to be charged is charged from a charging hopper 1 to a molten steel ladle 20 via a charging feeder 2.
転炉（図示せず）から溶鋼鍋２０への出鋼量
は、鍋重量測定器１９を介して鍋重量サンプリン
グ装置１８により取込まれる。合金鉄の投入量は
ホツパー重量測定器３を介して重量サンプリング
装置５により取り込まれる。 The amount of tapped steel from the converter (not shown) to the molten steel ladle 20 is taken in by the ladle weight sampling device 18 via the ladle weight measuring device 19. The input amount of ferroalloy is taken in by a weight sampling device 5 via a hopper weight measuring device 3.
合金鉄の投入は第２図に示される様に出鋼量が
30（％）から70（％）の間に行なわれるものとす
る。本図は、合金鉄の総投入量を100（％）と
し、出鋼量が30〜35（％）の間に10（％）を、35
〜45（％）の間に20（％）を45〜55（％）の間に
40（％）を、55〜65（％）の間に20（％）を、そ
して65〜70（％）に残る10（％）を投入する事を
指示している。 As shown in Figure 2, the input of ferroalloy is determined by the amount of steel produced.
It shall be carried out between 30 (%) and 70 (%). In this figure, the total input amount of ferroalloy is 100 (%), and the amount of tapped steel is between 30 and 35 (%), 10 (%), 35
Between ~45 (%) 20 (%) Between 45 and 55 (%)
The instructions are to invest 40 (%), 20 (%) between 55 and 65 (%), and the remaining 10 (%) between 65 and 70 (%).
出鋼が開始されると出鋼速度演算器１１は、鍋
重量サンプリング装置１８よりの鍋重量値を基に
出鋼速度Q1を演算し、速度と出鋼量を比較回路
１０に伝達する。この出鋼速度Q1の演算は(1)式
によつて行われる。 When tapping is started, the tapping speed calculator 11 calculates the tapping speed Q 1 based on the ladle weight value from the ladle weight sampling device 18 and transmits the speed and the amount of tapped steel to the comparison circuit 10 . This tapping speed Q 1 is calculated using equation (1).
Q1＝（Ｗ1-o−W1）／ｎ・ｔ ……(1)
但し、
W1＝サンプリング鍋重量
ｔ＝重量サンプリング周期
ｎ＝速度計算周期
他方で、区間投入量演算器１３は投入パターン
番号設定器１５及び投入パターン記憶装置よりの
データにより投入開始タイミングの出鋼量割合を
比較回路１０に伝達する。比較回路１０は演算器
１１よりの出鋼量及び出鋼総量設定器１７よりの
データによつて投入開始タイミングに到達すると
その旨を演算器１３に伝達する。この時、演算器
１３はサンプリング装置５よりのデータを投入総
量設定器１６に設定すると共に、投入開始重量記
憶器７に設定し、投入パターン記憶装置１４より
のデータの投入量割合によつて区間投入量ＷFを
演算し区間投入量設定器９に設定する。この時の
区間投入量ＷFは次式によつて演算される。 Q 1 = (W 1-o − W 1 )/n・t...(1) However, W 1 = Sampling pot weight t = Weight sampling period n = Speed calculation period On the other hand, the section input amount calculation unit 13 Based on the data from the pattern number setter 15 and the charging pattern storage device, the steel output ratio at the charging start timing is transmitted to the comparison circuit 10. When the charging start timing is reached, the comparison circuit 10 transmits the fact to the calculator 13 based on the amount of steel tapped from the calculator 11 and the data from the total amount of steel tapped setter 17 . At this time, the arithmetic unit 13 sets the data from the sampling device 5 in the total input amount setting unit 16 and also sets it in the input start weight storage unit 7, and sets the data from the input pattern storage unit 14 in accordance with the input rate of the input amount. The input amount W F is calculated and set in the section input amount setting device 9. The section input amount W F at this time is calculated by the following equation.
ＷF＝ＷFT×ＰFj ……(2)
但し、
ＷFT＝投入総量
ＰFj＝投入量割合
そして各種準備完了の旨を比較回路１０に伝達す
る。比較回路１０は区間投入量設定器９からのデ
ータと出鋼速度演算器１１からのデータにより合
金鉄投入速度Ｓを演算し、振幅演算器１２に投入
速度Ｓを伝達する。この時の投入速度Ｓは次式に
よつて得られる。 W F = W FT ×P Fj (2) where W FT = total amount of input, P Fj = ratio of input amount, and the completion of various preparations is transmitted to the comparator circuit 10. The comparison circuit 10 calculates the ferroalloy charging speed S based on the data from the section charging amount setter 9 and the data from the tapping speed calculator 11, and transmits the charging speed S to the amplitude calculator 12. The charging speed S at this time can be obtained from the following equation.
Ｓ＝ＷF／T1 ……(3)
但し、
T1＝ＷT×（Ｐs1+1−Ｐsj）／S1 ……(4)
ＷT＝出鋼総量
Ｐsj＝投入開始出鋼割合
この振幅演算器１２とフイーダ振幅設定器６によ
り、上記投入速度をもとに投入フイーダ２用の振
幅値に変換し、フイーダ駆動回路４に伝達し、投
入フイーダを動作せしめる。 S=W F /T 1 ...(3) However, T 1 = W T × (P s1+1 − P sj )/S 1 ...(4) W T = Total amount of steel tapped P sj = Start of steel tapping The amplitude calculator 12 and the feeder amplitude setter 6 convert the input speed into an amplitude value for the input feeder 2, which is transmitted to the feeder drive circuit 4 to operate the input feeder.
合金鉄の投入が始まると、合金鉄投入速度演算
器８は重量サンプリング装置５及び投入開始重量
設定器７よりのデータにより投入速度S1を演算
し、比較回路１０に伝達する。この時の投入速度
S1は次式によつて求められる。 When charging of the ferroalloy starts, the ferroalloy charging speed calculator 8 calculates the charging speed S 1 based on the data from the weight sampling device 5 and the charging start weight setting device 7 and transmits it to the comparison circuit 10 . Feeding speed at this time
S 1 is determined by the following formula.
S1＝（ＷFT−ＷF1）／ｉ・ｔ ……(5)
但し、
ＷF1＝重量サンプリング値
比較回路１０は合金鉄投入速度演算器８からの合
金鉄投入速度S1と、区間投入量設定器９よりの投
入量ＷFとをもとに投入所要時間Ｔを次式によつ
て求める。 S 1 = (W FT − W F1 )/i・t (5) However, W F1 = Weight sampling value comparison circuit 10 calculates the ferroalloy charging speed S 1 from the ferroalloy charging speed calculator 8 and the interval charging speed. Based on the input amount W F from the amount setting device 9, the required input time T is determined by the following formula.
Ｔ＝ＷF／S1 ……(6)
更に、この比較回路１０では、出鋼速度演算器
１１から与えられる出鋼速度Q1より合金鉄の投
入が所定の出鋼割合の中に納まるか否かの判断を
する。この判定は(6)式の時間Ｔと(4)式の時間T1
とにより行う。この判定の結果、所定の出鋼割合
の中に納まらない場合には出鋼割合の中に納める
為の投入速度を再計算し振幅演算器１２へ伝達し
速度を制御する。この速度の再計算の制御を表わ
したものが第３図である。本図では、時間t0で投
入を開始し、その時の出鋼速度がQ1であつたの
で投入速度S1で投入し、t2で終了する事で制御し
ている。この時、
S1＝ＷF／Ｔ ……(7)
Ｔ＝（Ｗj+1−Ｗj）／Q1 ……(8)
Ｔ＝t2−t0 ……(9)
但し、
Ｗj＝投入タイミング鍋重量
である。然るに、時間t1で出鋼速度がQ2と遅くな
つたために、投入速度S1では早く投入されるの
で、t1の時点で投入速度S2とし、t3で終了する予
定となる。この時、
S2＝ＷR／T′ ……(10)
ＷR＝ＷF−（ＷFS−ＷFi） ……(11)
T′＝（Ｗi−Ｗj）／Q2 ……(12)
但し、
ＷR＝投入残量
ＷFS＝投入開始時重量
ＷFi＝重量サンプリング値
Ｗi＝鍋重量サンプリング値
Ｗj＝投入終了鍋重量値
T′＝残投入許容時間
である。以上の投入速度補正処理手順をフローチ
ヤートによつて示したものが第４図である。 T=W F /S 1 ...(6) Furthermore, this comparison circuit 10 determines whether the input of ferroalloy falls within a predetermined tapping ratio based on the tapping speed Q 1 given from the tapping speed calculator 11. Decide whether or not to do so. This judgment is based on the time T in equation (6) and the time T 1 in equation (4).
This is done by As a result of this determination, if the tapping rate does not fall within the predetermined tapping ratio, the charging speed is recalculated to fit within the tapping ratio and is transmitted to the amplitude calculator 12 to control the speed. FIG. 3 shows this speed recalculation control. In this figure, control is performed by starting charging at time t 0 , and since the tapping speed at that time was Q 1 , charging is performed at charging speed S 1 and ends at t 2 . At this time, S 1 =W F /T...(7) T=(W j+1 - W j )/Q 1 ...(8) T=t 2 -t 0 ...(9) However, W j = Loading timing pot weight. However, since the tapping speed slowed down to Q 2 at time t 1 , the charging speed S 1 is faster, so the charging speed is set to S 2 at t 1 and is scheduled to end at t 3 . At this time, S 2 = W R /T' ... (10) W R = W F - (W FS - W Fi ) ... (11) T' = (W i - W j ) / Q 2 ... ( 12) However, W R = Remaining amount of input W FS = Weight at the start of input W Fi = Weight sampling value Wi = Pot weight sampling value W j = Pot weight value at the end of loading T' = Remaining allowable loading time. FIG. 4 is a flowchart showing the above-described feeding speed correction processing procedure.
本実施例によれば、合金鉄の投入は、定められ
た量が定められた期間に正しく行なわれ最適な投
入が可能となる。 According to this embodiment, the ferroalloy can be added in a predetermined amount and correctly during a predetermined period, making it possible to optimally feed the ferroalloy.
本発明の応用例として投入ホツパーが複数個の
場合がある。各投入ホツパーよりの投入が同時に
行なわれない場合は単一ホツパーの場合と同様の
制御でよく、各ホツパーの投入量の合計を100
（％）として扱えばよい。しかし各ホツパーから
同時に投入する場合は、各ホツパーに投入量の合
計を100（％）とする事は同一であるが投入量を
演算する時には同時に投入する各ホツパーの投入
量合計でもつて区間投入量とし、各ホツパーより
の投入が同時に完了する形となる様に速度制御す
ることで実現できる。本応用例によれば合金鉄の
種類によつて投入ホツパーへの貯蔵、投入時の競
合の様な問題に対しても制御系を変えなくても対
応できる。 As an application example of the present invention, there may be a case where there are a plurality of input hoppers. If input from each input hopper is not carried out at the same time, the same control as for a single hopper may be used, and the total input amount of each hopper can be set to 100.
It can be treated as (%). However, when feeding from each hopper at the same time, it is the same that the total amount of input to each hopper is 100 (%), but when calculating the amount of input, the total input amount of each hopper that feeds at the same time can be calculated as the interval input amount This can be achieved by controlling the speed so that charging from each hopper is completed at the same time. According to this application example, problems such as storage in the input hopper and competition during input depending on the type of ferroalloy can be dealt with without changing the control system.
以上述べたように本発明によれば、合金鉄投入
タイミング・終了タイミングを出鋼量に基づいて
求め、また出鋼速度に応じて合金鉄の投入速度を
補正できるので、投入・終了のタイミングを自動
的に得ることができると共に最適な投入が可能と
なるという効果がある。 As described above, according to the present invention, the ferroalloy input timing and termination timing can be determined based on the amount of steel tapped, and the ferroalloy input speed can be corrected according to the tapping speed, so the timing of inputting and termination can be determined. This has the effect that it can be obtained automatically and that optimal input is possible.
第１図は本発明の実施例図、第２図は合金鉄投
入パターンの説明図、第３図は投入速度制御説明
図、第４図は投入速度補正手順のフローチヤート
である。
１……合金鉄投入ホツパー、２……投入フイー
ダ、３……ホツパー重量測定器、４……フイーダ
駆動回路、１０……比較回路、１９……鍋重量測
定器、２０……溶鋼鍋。
FIG. 1 is an embodiment of the present invention, FIG. 2 is an explanatory diagram of a ferroalloy charging pattern, FIG. 3 is an explanatory diagram of charging speed control, and FIG. 4 is a flowchart of a charging speed correction procedure. 1... ferroalloy input hopper, 2... input feeder, 3... hopper weight measuring device, 4... feeder drive circuit, 10... comparison circuit, 19... pot weight measuring device, 20... molten steel ladle.
Claims (1)
出鋼量を基準として合金鉄の投入開始のタイミン
グ及び終了のタイミングを得るようにした合金鉄
投入制御方式。 ２ 出鋼の階段で合金鉄を投入する際、投入開始
時に、実測した出鋼重量を基に算出した出鋼速度
より合金鉄の投入速度を求めて、これを基に合金
鉄の投入制御を開始し、投入中には合金鉄の投入
速度を実測し、出鋼速度に応じた終了タイミンン
グを得るように合金鉄の投入速度を補正してなる
合金鉄投入制御方式。[Scope of Claims] 1. A ferroalloy charging control system in which, when charging ferroalloy at the tapping stage, the timing to start and end the charging of ferroalloy is obtained based on the actually measured amount of tapped steel. 2. When charging ferroalloy at the tapping stage, at the start of charging, the ferroalloy charging speed is determined from the tapping speed calculated based on the actually measured tapped weight, and the ferroalloy charging control is performed based on this. This is a ferroalloy charging control method in which the ferroalloy charging speed is actually measured at the start and during charging, and the ferroalloy charging speed is corrected to obtain the end timing according to the tapping speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9546678A JPS5524917A (en) | 1978-08-07 | 1978-08-07 | Control of alloy steel charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9546678A JPS5524917A (en) | 1978-08-07 | 1978-08-07 | Control of alloy steel charge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5524917A JPS5524917A (en) | 1980-02-22 |
| JPS6144921B2 true JPS6144921B2 (en) | 1986-10-06 |
Family
ID=14138425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9546678A Granted JPS5524917A (en) | 1978-08-07 | 1978-08-07 | Control of alloy steel charge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5524917A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57131485A (en) * | 1981-02-06 | 1982-08-14 | Hitachi Ltd | Full automatic washing machine |
| JPS5867818A (en) * | 1981-10-15 | 1983-04-22 | Kawasaki Steel Corp | Control of steel tapping in converter |
| JPS60163689A (en) * | 1984-02-03 | 1985-08-26 | 松下電器産業株式会社 | Washer with water storage tank |
| JPH0639668Y2 (en) * | 1989-03-27 | 1994-10-19 | 株式会社東京洗染機械製作所 | Washing machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310318A (en) * | 1976-07-15 | 1978-01-30 | Nippon Steel Corp | Throwing method of additive into ladle |
-
1978
- 1978-08-07 JP JP9546678A patent/JPS5524917A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310318A (en) * | 1976-07-15 | 1978-01-30 | Nippon Steel Corp | Throwing method of additive into ladle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5524917A (en) | 1980-02-22 |
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