JPH0559455A - Method for controlling strip temperature in induction heating of strip - Google Patents
Method for controlling strip temperature in induction heating of stripInfo
- Publication number
- JPH0559455A JPH0559455A JP3217424A JP21742491A JPH0559455A JP H0559455 A JPH0559455 A JP H0559455A JP 3217424 A JP3217424 A JP 3217424A JP 21742491 A JP21742491 A JP 21742491A JP H0559455 A JPH0559455 A JP H0559455A
- Authority
- JP
- Japan
- Prior art keywords
- strip
- temperature
- induction
- heat
- plate temperature
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば鋼帯の連続焼
鈍ライン（Ｃ，Ａ，Ｐ，Ｌ）やブリキライン等におい
て、誘導加熱（インダクションヒ−ティング）によりス
トリップを昇温する際の板温制御方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate for heating a strip by induction heating (induction heating) in a continuous annealing line (C, A, P, L) or a tin plate line of a steel strip. The present invention relates to a temperature control method.
【０００２】[0002]
【従来技術】特開昭６１−２４９６２１号公報に開示の
如く、ストリップの目標昇温量を得るための投入電力の
算出方法は、ある基準通板速度における必要投入電力を
昇温量，板厚，板幅の関数として与えておき、これによ
り、実通板サイズ，目標昇温量に対応する基準投入電力
を求め、これに実通板速度と基準通板速度の比を乗じ
て、目標投入電力を得ていた。2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open No. 61-249621, a method of calculating electric power to obtain a target amount of temperature rise of a strip is as follows. , Which is given as a function of the strip width, by which the reference input power corresponding to the actual strip size and the target temperature rise is calculated, and the target input power is multiplied by the ratio of the actual strip speed and the reference strip speed. I was getting power.
【０００３】[0003]
【発明が解決しようとする課題】所定の昇温量を得るた
めの投入電力と通板速度との関係は、比例要素（通板速
度の増減に対し、ストリップの単位体積当りの投入エネ
ルギを一定に保つためには、通板速度に比例した投入電
力が必要）の値が大きいとはいえ、反比例要素（ストリ
ップがインダクションヒ−ティングゾ−ンを通過する際
は、うず電流による発熱と同時に、周囲への放熱が起き
ており、放熱は該ゾ−ン通過時間が短いほど小さい。即
ち、通板速度が大きいほど放熱補償分の電力は小さくて
よい）も存在する。The relationship between the input electric power and the strip passing speed for obtaining a predetermined amount of temperature rise is proportional to the proportional energy (the input energy per unit volume of the strip is constant as the strip passing speed increases and decreases. Although the value of the input power that is proportional to the strip running speed is large in order to maintain the value, the inverse proportional element (when the strip passes through the induction heating zone, heat generated by the eddy current and There is also a heat dissipation to the heat sink, and the heat dissipation is smaller as the zone passing time is shorter (that is, the power for heat dissipation compensation may be smaller as the plate passing speed is higher).
【０００４】冷薄用連続焼鈍ラインやブリキラインのよ
うに、通板速度レンジが比較的狭いラインでは、反比例
要素を無視しても実用上さしつかえなかったが、ブリキ
用連続焼鈍ラインのように通板速度レンジが広いライン
では、反比例要素を考慮しないと、制御精度が得られな
い。In a line having a relatively narrow strip speed range, such as a continuous annealing line for cooling and thinning, and a tin line, it could be practically used even if the inverse proportional factor was ignored. On a line with a wide strip speed range, control accuracy cannot be obtained without considering the inverse proportional element.
【０００５】また、加熱装置の回路定数の経時変化によ
り、加熱効率が変化するので、制御精度を維持するため
には、基準投入電力計算式に補正係数（効率係数）を導
入し、かつ制御精度を常に監視して、この補正係数を最
適値に保つ必要があり、多大な労力を必要とした。本発
明は高い制御精度を少い労力で達成しうる板温制御方法
を提供することを目的とする。Further, since the heating efficiency changes due to the change of the circuit constant of the heating device with time, in order to maintain the control accuracy, a correction coefficient (efficiency coefficient) is introduced into the reference input power calculation formula, and the control accuracy is increased. It is necessary to constantly monitor and maintain this correction coefficient at an optimum value, which requires a great deal of labor. An object of the present invention is to provide a plate temperature control method capable of achieving high control accuracy with a small amount of labor.
【０００６】[0006]
【課題を解決するための手段】（１） 本願発明では、
連続焼鈍ラインにおいて、多段インダクションヒ−タに
よる板温制御を実施するに当り、インダクションコイル
部の前面及び後面の非加熱部（空走部）におけるストリ
ップからの放熱と、インダクションコイル部でのストリ
ップ自発熱及び放熱を考慮したモデル式を用い、ストリ
ップの板厚，板幅，通板速度，入側板温又は、出側目標
板温が変化した際にインダクションヒ−タの投入電力が
該モデル式で求まる値になる様制御することにより、イ
ンダクションヒ−タ出側での板温を目標値に制御する。(1) In the present invention,
In the continuous annealing line, when performing the plate temperature control by the multi-stage induction heater, heat radiation from the strip in the non-heated part (idling part) on the front and rear surfaces of the induction coil and the strip itself in the induction coil part Using a model formula that considers heat generation and heat dissipation, the input power of the induction heater is changed by the model formula when the strip thickness, strip width, strip speed, inlet side plate temperature, or outlet side target plate temperature changes. By controlling so as to obtain the value obtained, the plate temperature on the outlet side of the induction heater is controlled to the target value.
【０００７】（２） 本願発明の一実施態様では、操業
上、ストリップの板厚，板幅，通板速度及び出側目標板
温の変化がない時は、モデル式の微分形を用い、一定周
期毎にインダクションヒ−タの投入電力を修正して、板
温を目標値に制御する。(2) In one embodiment of the present invention, when there is no change in the strip thickness, strip width, strip running speed, and delivery side target strip temperature during operation, the differential form of the model formula is used to maintain a constant value. The input power of the induction heater is corrected every cycle to control the plate temperature to the target value.
【０００８】（３） また本願発明の一実施態様では、
制御精度の維持・向上を図るため、制御中の実績デ−タ
（インダクションヒ−タ投入電力，入側板温，出側板
温，板厚，板幅，通板速度）より、逐次型最小二乗法を
用いて、モデル式の各パラメ−タ（各インダクションヒ
−タの総合効率及び加熱部におけるストリップの総括放
熱係数）のオンライン適応修正を行う。(3) In one embodiment of the present invention,
In order to maintain and improve control accuracy, iterative least squares method is used based on actual data during control (induction heater input power, inlet side plate temperature, outlet side plate temperature, plate thickness, plate width, plate passing speed) Is used to perform online adaptive correction of each parameter of the model formula (total efficiency of each induction heater and overall heat dissipation coefficient of strip in heating section).
【０００９】また操業上、インダクションヒ−タによる
ストリップの加熱を行わない時の実績デ−タ（入側板
温，出側板温，板厚，板幅，通板速度）より、モデル式
のパラメ−タ（空走部でのストリップ総括放熱係数）の
オンライン適応修正を行う。In operation, the model-type parameters are determined from the actual data (inlet plate temperature, outlet plate temperature, plate thickness, plate width, plate passing speed) when the strip is not heated by the induction heater. Online correction of data (total strip heat dissipation coefficient in idle section) is performed.
【００１０】即ち、本願発明は、インダクションヒ−テ
ィングゾ−ンにおけるストリップの放熱を考慮したモデ
ル式に基づき、板温フィ−ドフォワ−ド制御及び板温フ
ィ−ドバック制御を行うとともに、モデル式のパラメ−
タをオンラインで学習することにより通板速度レンジの
広いラインにおいても、メンテナンスフリ−な板温制御
を実現するものである。That is, according to the present invention, the plate temperature feedforward control and the plate temperature feedback control are performed based on the model formula in consideration of the heat radiation of the strip in the induction heating zone, and the parameter of the model formula is used. −
By learning the parameters online, it is possible to realize maintenance-free plate temperature control even in a line with a wide plate passing speed range.
【００１１】[0011]
【作用】 以下、一実施例に基づいて説明する。[Operation] Hereinafter, description will be given based on an embodiment.
【００１２】図１は、本発明を一態様で実施する装置の
機能ブロックを示す。フィ−ドフォワ−ド投入電力計算
３は、異種コイル（ストリップ）の境界点がインダクシ
ョンヒ−ティングゾ−ンに到達した時及び通板速度変化
検出時に起動され、ストリップ情報２や出側目標板温１
より、投入電力目標値Ｐi を計算し、加熱装置６へ設定
する。FIG. 1 shows functional blocks of an apparatus for implementing the invention in one aspect. The feed-forward input power calculation 3 is started when the boundary points of different types of coils (strips) reach the induction heating zone and when the passage speed change is detected, and the strip information 2 and the output side target plate temperature 1 are calculated.
Then, the input power target value P i is calculated and set in the heating device 6.
【００１３】投入電力目標値Ｐi の計算においては、イ
ンダクションヒ−ティングにおける加熱・放熱プロセス
が図２の如きであり、図２の１３が、インダクションヒ
−ティングによる発熱量であり、これにより投入電力目
標値が定まる。図２において、入側空走部および出側空
走部の放熱量１１及び１４は、伝熱理論より求められ、
入側空走部の放熱量１１は、入側空走部の始点のストリ
ップ温度ＴL と終点の温度ＴH に対応して次のように求
まる。In the calculation of the input power target value P i , the heating / heat radiating process in induction heating is as shown in FIG. 2, and 13 in FIG. 2 is the amount of heat generated by induction heating. The power target value is set. In FIG. 2, the heat radiation amounts 11 and 14 of the inlet side idle part and the outlet side idle part are obtained from the heat transfer theory,
The heat radiation amount 11 of the entrance side idle running portion is obtained as follows corresponding to the strip temperature T L at the start point and the end temperature T H of the entrance side idle running portion.
【００１４】 ＱE −ＱL ＝２・α・（Ｔg −Ｔs ）Ｌ1 ／（ρ・ｔ・ｖ）， Ｔs ＝Ｔg −(ＴL −ＴE )／Ｌｎ〔(Ｔg −ＴE )／(Ｔg −ＴL )〕 ＝(ＴE −ＴL )・ＣP(ＴE ) より、 ＴL ＝Ｔg ＋(ＴE −Ｔg )・exp〔−2・α・Ｌ1 /(ρ・ｔ・ｖ・ＣP (ＴE ))〕 ・・・(1) ＱH −ＱD ＝2・α・(Ｔg −Ｔs ′)Ｌ3 /(ρ・ｔ・ｖ)， Ｔs ′＝Ｔg −(ＴD −ＴE )/Ｌn 〔(Ｔg −ＴH )/(Ｔg −ＴD )〕 ＝(ＴH −ＴD )・ＣP (ＴD) より、 ＴH ＝Ｔg ＋(ＴD −Ｔg )・exp〔2・α・Ｌ3 /(ρ・ｔ・ｖ・ＣP (ＴD ))〕 ・・・(2) 但し、ＱE ：インダクションヒ−ティングゾ−ン入口の
ストリップ含熱量, ＱL ：インダクションコイル入口のストリップ含熱量, ＱH ：インダクションコイル出口のストリップ含熱量, ＱD ：インダクションヒ−ティングゾ−ン出口のストリ
ップ含熱量, ＴE ：インダクションヒ−ティングゾ−ン入口板温, ＴL ：インダクションコイル入口板温, ＴH ：インダクションコイル出口板温, ＴD ：インダクションヒ−ティングゾ−ン出口板温, Ｔg ：雰囲気温度, α：ストリップの総括熱伝達係数， ρ：ストリップの密度， ｔ：ストリップの板厚， ｖ：ストリップの通板速度， Ｌ1 ：入側空走部長さ, Ｌ3 ：出側空走部長さ, ＣP (T)：板温Ｔ時のストリップ比熱。Q E −Q L = 2 · α · (T g −T s ) L 1 / (ρ · t · v), T s = T g − ( TL −T E ) / Ln [(T g −T E ) / (T g −T L )] = (T E −T L ) · C P (T E ), T L = T g + (T E −T g ) · exp [−2 · α・ L 1 / (ρ ・ t ・ v ・ C P (T E ))] ・ ・ ・ (1) Q H −Q D = 2 ・ α ・ (T g −T s ′) L 3 / (ρ ・ t · v), T s' = T g - (T D -T E) / L n [(T g -T H) / ( T g -T D) ] = (T H -T D) · C P ( From T D ), T H = T g + (T D −T g ) ・ exp [2 ・ α ・ L 3 / (ρ ・ t ・ v ・ C P (T D ))] (2) , Q E: induction heat - Tinguzo - down inlet strip含熱amount, Q L: strip含熱amount of inlet induction coil, Q H: strip含熱amount of induction coil outlet, Q D: induction heat - Tinguzo - the emission outlet strip含熱amount, T E: Induction heat - Tinguzo - down inlet plate temperature, T L: induction coil inlet plate temperature, T H: induction coil outlet plate temperature, T D: Induction heat - Tinguzo - emission outlet plate temperature, T g: Atmospheric temperature, α: Overall heat transfer coefficient of strip, ρ: Density of strip, t: Strip thickness, v: Strip passing speed, L 1 : Inlet idle running length, L 3 : Outgoing idle Length, C P (T): Specific heat of strip at plate temperature T.
【００１５】また、図２に示す加熱部でのストリップ放
熱量１２も同様にして求まる。 ΔＱ＝２・β・Ｌ2 (Ｔg −Ｔs ″)/(ρ・ｔ・ｖ)， Ｔs ″＝Ｔg −(ＴH −ＴL )/Ｌｎ〔(Ｔg −ＴL )/(Ｔg −ＴH )〕 ＝2・β・Ｌ2 (ＴH −ＴL )/{ρ・ｔ・ｖ・Ｌｎ〔(Ｔg −ＴL )/(Ｔg −ＴH )〕} ・・・(3) 但し、 β：ストリップ総括熱伝達係数, Ｌ2 ：インダクションコイル部長さ。Further, the strip heat radiation amount 12 in the heating portion shown in FIG. 2 can be similarly obtained. ΔQ = 2 · β · L 2 (T g -T s ") / (ρ · t · v), T s" = T g - (T H -T L) / Ln [(T g -T L) / (T g -T H)] = 2 · β · L 2 ( T H -T L) / {ρ · t · v · Ln [(T g -T L) / ( T g -T H) ]}・ (3) where β is the overall heat transfer coefficient of the strip, and L 2 is the length of the induction coil.
【００１６】(1)，(2)，(3)式より投入電力目標値Ｐ
は、次式により求まる。Input power target value P is obtained from the equations (1), (2) and (3).
Is calculated by the following equation.
【００１７】[0017]
【数３】 [Equation 3]
【００１８】但し、 ｒi ：第ｉ番目インダクションコイルへの投入電力配分
比率， ηi ：第ｉ番目インダクションコイルの総合効率， ｗ：ストリップの板幅, Ｆ(T)：板温Ｔ時のストリップ含熱量。However, r i : ratio of input power to the i-th induction coil, η i : total efficiency of the i-th induction coil, w: strip width, F (T): strip at strip temperature T Heat content.
【００１９】図１の、フィ−ドバック投入電力修正量計
算４は、通板速度変化も、異種コイルの境界の到来もな
い時に一定周期で起動され、出側板温偏差（実績板温−
目標板温）に基づいて投入電力修正量ΔＰを計算し、投
入電力実績値に加算して投入電力目標値を得、加熱装置
６へ設定する。投入電力修正量ΔＰの計算に当っては、
(4)式の微分形である次の(5)式を用いる。The feedback input power correction amount calculation 4 of FIG. 1 is started at a constant cycle when there is no change in the strip running speed and the arrival of the boundary between different coils, and the output side plate temperature deviation (actual plate temperature-
The input power correction amount ΔP is calculated based on the target plate temperature) and added to the actual input power value to obtain the input power target value, which is set in the heating device 6. When calculating the input power correction amount ΔP,
The following equation (5), which is the differential form of equation (4), is used.
【００２０】[0020]
【数４】 [Equation 4]
【００２１】但し、 Ｇfb ：フィ−ドバックゲイン, β：ストリップ総括熱伝達係数, ΔＴD ：板温偏差。However, G fb : Feedback gain, β: Overall heat transfer coefficient of strip, ΔT D : Plate temperature deviation.
【００２２】(1)〜(5)式に表われるパラメ−タα，β，
ηi は経時変化し制御精度に影響を及ぼすため、図１
の、５において入側板温実績，出側板温実績，投入電力
実績，通板速度実績等に基づき、逐次型最小二乗法を用
いて、オンライン適応修正を行う。The parameters α, β, expressed by the equations (1) to (5),
Since η i changes over time and affects control accuracy,
In No. 5, on-line adaptive correction is performed by using the recursive least squares method based on the input side plate temperature actual result, the output side plate temperature actual result, the input power actual result, the plate passing speed actual result, and the like.
【００２３】[0023]
【発明の効果】以上の如く、本発明によるストリップの
インダクションヒ−ティングにおける板温制御方法を用
いれば、通板速度レンジの広い連続焼鈍ラインにおいて
も、制御精度を悪化させることなくしかも、メンテナン
スフリ−を実現することができる。As described above, when the strip temperature control method for strip induction heating according to the present invention is used, even in a continuous annealing line having a wide strip speed range, control accuracy is not deteriorated, and maintenance-free is achieved. -Can be realized.
【図１】ストリップのインダクションヒ−ティングにお
ける板温制御の全体機能を示すブロック図である。FIG. 1 is a block diagram showing the overall function of plate temperature control in strip induction heating.
【図２】インダクションヒ−ティングゾ−ンにおけるス
トリップの単位体積当りの含熱量の変化を表わすグラフ
であり、横軸はストリップの位置、縦軸はストリップの
含熱量を示す。FIG. 2 is a graph showing a change in heat content per unit volume of a strip in an induction heating zone, where the horizontal axis represents the position of the strip and the vertical axis represents the heat content of the strip.
１：出側目標板温 ２：ストリップ情報（板厚，板幅・・・） ３：フィ−ドフォ−ド投入電力計算 ４：フィ−ドバック投入電力修正量計算 ５：モデル式パラメ−タ学習 ６：加熱装置 ７：入側板温計 ８：出側板温計 ９：加熱コイル １１：入側空走部ストリップ放熱量 １２：加熱部ストリップ放熱量 １３：インダクションヒ−ティングによる発熱量 １４：出側空走部ストリップ放熱量 1: Output side target plate temperature 2: Strip information (plate thickness, plate width, etc.) 3: Feed-forward input power calculation 4: Feed-back input power correction amount calculation 5: Model formula parameter learning 6 : Heating device 7: Inlet plate thermometer 8: Outlet plate thermometer 9: Heating coil 11: Inlet side strip heat dissipation amount 12: Heating part strip heat dissipation amount 13: Induction heating heat generation amount 14: Outlet air temperature Running strip heat dissipation
Claims (3)
ョンヒ−タによる板温制御を実施するに当り、インダク
ションコイル部の前面及び後面の非加熱部におけるスト
リップからの放熱と、インダクションコイル部でのスト
リップ自発熱及び放熱を考慮した下式を用いてインダク
ションヒ−タの投入電力Ｐi を算出し、 【数１】 但し、 ＴL ＝Ｔg ＋(ＴE −Ｔg )・exp〔−2・α・Ｌ1 ／(ρ・ｔ・ｖ・ＣP (ＴE ))〕， ＴH ＝Ｔg ＋(ＴD −Ｔg )・exp〔2・α・Ｌ3 ／(ρ・ｔ・ｖ・ＣP (ＴD ))〕， Ｐi ：各インダクションヒ−タの投入電力， ｒi ：各インダクションヒ−タの投入電力配分比率（定
数）， ηi ：各インダクションヒ−タの総合効率， ρ：ストリップ密度， ｔ：ストリップ板厚， ｗ：ストリップ板幅， ｖ：ストリップ通板速度， α，β：ストリップ総括熱伝達係数， Ｌ1 ：前面の非加熱部（入側空走部）の長さ， Ｌ2 ：インダクションコイル部長さ， Ｌ3 ：後面の非加熱部（出側空走部）の長さ， Ｔg ：雰囲気温度， ＴE ：入側板温計指示値， ＴD ：出側目標板温， ＴL ：インダクションコイル入口板温予測値， ＴH ：インダクションコイル出口板温予測値， Ｆ(T)：ストリップ含熱量の板温多項式， ＣP (T)：ストリップ比熱の板温多項式， Ｎ：インダクションヒ−タ−段数、 インダクションヒ−タの投入電力を該Ｐi としてインダ
クションヒ−タ出側での板温を目標値に制御することを
特徴とする、ストリップの誘導加熱における板温制御方
法。1. When performing plate temperature control by a multi-stage induction heater in a continuous annealing line, heat is radiated from the strip in the non-heated portion of the front and rear surfaces of the induction coil section and the strip itself is cut in the induction coil section. The input power P i of the induction heater is calculated by using the following equation in consideration of heat generation and heat radiation, and However, T L = T g + (T E −T g ) · exp [−2 · α · L 1 / (ρ · t · v · C P (T E ))], T H = T g + (T D −T g ) · exp [2 · α · L 3 / (ρ · t · v · C P (T D ))], P i : input power of each induction heater, r i : each induction heater Input power distribution ratio (constant), η i : Total efficiency of each induction heater, ρ: Strip density, t: Strip plate thickness, w: Strip plate width, v: Strip passing speed, α, β: Overall heat transfer coefficient of strip, L 1 : Length of non-heated part (inlet side idle part) on the front face, L 2 : Induction coil part length, L 3 : Length of non-heated part (outlet side idle part) on the rear surface is, T g: ambient temperature, T E: entrance side temperature gauge readings, T D: exit-side target plate temperature, T L: induction coil inlet plate temperature prediction value, T H: induction coil outlet plate temperature prediction , F (T): Strip含熱amount of sheet temperature polynomial, C P (T): sheet temperature polynomial strip specific heat, N: Induction heat - data - number, induction heat - induction heat input power of the motor as the P i A plate temperature control method in induction heating of a strip, characterized in that the plate temperature on the output side of the tape is controlled to a target value.
板速度ｖ及び出側目標板温ＴD の変化がない時は、下式
により一定周期毎にインダクションヒ−タの投入電力Ｐ
i を修正して、 【数２】 但し ΔＰi ：各インダクションヒ−タ投入電力修正
量， Ｇfb ：フィ−ドバックゲイン（定数）， ΔＦD ：インダクションヒ−タ出側板温偏差(目標板温
一実績板温)、 板温を目標値に制御することを特徴とする請求項１のス
トリップの誘導加熱における板温制御方法。2. In operation, when there is no change in strip thickness t, strip width w, strip passing speed v, and outlet target strip temperature T D , the induction heater is turned on at regular intervals according to the following equation. Electric power P
Modify i to However [Delta] P i: the induction heat - motor input power correction amount, G fb: Fi --back gain (constant), [Delta] F D: Induction heat - data delivery side temperature deviation (target metal temperature one actual plate temperature), the target plate temperature The method according to claim 1, wherein the strip temperature is controlled to a value.
i ，入側板温ＴE ，出側板温ＴD ，板厚ｔ，板幅ｗ，通
板速度ｖ等の実績デ−タより、逐次型最小二乗法を用い
て、各インダクションヒ−タ総合効率ηi 及びストリッ
プ総括熱伝達係数βのオンライン適応修正を行い、ま
た、操業上、インダクションヒ−タによるストリップの
加熱を行わない時の実績デ−タ入側板温ＴE ，出側板温
ＴD ，板幅ｗ，通板速度ｖより、非加熱部のストリップ
総括熱伝達係数αをオンラインで逐次修正することを特
徴とする請求項１の、ストリップの誘導加熱における板
温制御方法。3. An induction heater input power P under control.
i , the inlet side plate temperature T E , the outlet side plate temperature T D , the plate thickness t, the plate width w, the passing speed v, and the like. η i and the strip total heat transfer coefficient β are online adaptively corrected, and the actual data when the strip is not heated by the induction heater during operation are data input side plate temperature T E , output side plate temperature T D , The strip temperature control method for induction heating of strip according to claim 1, wherein the strip total heat transfer coefficient α of the non-heated portion is successively corrected online on the basis of the strip width w and the strip passing speed v.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3217424A JP2503332B2 (en) | 1991-08-28 | 1991-08-28 | Strip temperature control method for induction heating of strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3217424A JP2503332B2 (en) | 1991-08-28 | 1991-08-28 | Strip temperature control method for induction heating of strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0559455A true JPH0559455A (en) | 1993-03-09 |
| JP2503332B2 JP2503332B2 (en) | 1996-06-05 |
Family
ID=16703998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3217424A Expired - Lifetime JP2503332B2 (en) | 1991-08-28 | 1991-08-28 | Strip temperature control method for induction heating of strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503332B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019143216A (en) * | 2018-02-22 | 2019-08-29 | 富士電子工業株式会社 | Heat treatment system |
| JP2021109990A (en) * | 2020-01-08 | 2021-08-02 | Ｊｆｅスチール株式会社 | Plate temperature control method, heating control device and method for producing metal plate |
| US11466340B2 (en) | 2016-01-28 | 2022-10-11 | Jfe Steel Corporation | Steel sheet temperature control device and temperature control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5312709A (en) * | 1976-07-22 | 1978-02-04 | Nippon Steel Corp | Uniform heating method for end parts of long-sized material in induction heating system |
-
1991
- 1991-08-28 JP JP3217424A patent/JP2503332B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5312709A (en) * | 1976-07-22 | 1978-02-04 | Nippon Steel Corp | Uniform heating method for end parts of long-sized material in induction heating system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11466340B2 (en) | 2016-01-28 | 2022-10-11 | Jfe Steel Corporation | Steel sheet temperature control device and temperature control method |
| JP2019143216A (en) * | 2018-02-22 | 2019-08-29 | 富士電子工業株式会社 | Heat treatment system |
| JP2021109990A (en) * | 2020-01-08 | 2021-08-02 | Ｊｆｅスチール株式会社 | Plate temperature control method, heating control device and method for producing metal plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503332B2 (en) | 1996-06-05 |
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