JPS58310A - Controlling device for rolling temperature - Google Patents

Controlling device for rolling temperature

Info

Publication number
JPS58310A
JPS58310A JP56099382A JP9938281A JPS58310A JP S58310 A JPS58310 A JP S58310A JP 56099382 A JP56099382 A JP 56099382A JP 9938281 A JP9938281 A JP 9938281A JP S58310 A JPS58310 A JP S58310A
Authority
JP
Japan
Prior art keywords
heating
temp
pattern
output
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.)
Pending
Application number
JP56099382A
Other languages
Japanese (ja)
Inventor
Kaname Nakagawa
中川　要
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56099382A priority Critical patent/JPS58310A/en
Publication of JPS58310A publication Critical patent/JPS58310A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/12—Arrangement or installation of roller tables in relation to a roll stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Control Of Heat Treatment Processes (AREA)

Abstract

PURPOSE:To make the temperature distribution of a rolling material after heating uniform, by detecting a temp. pattern of the rolling material before and after heating, and controlling a transferring speed and a heating device of the material by means of a heating pattern obtained by comparing a standard temp. pattern with said detected temp. pattern. CONSTITUTION:Rolling materials W are heated by a heating device 1 while being transferred on a transfer table 3 to be sent to a hot rolling mill. At this time, temp. patterns of the materials W before and after heating are detected by temp. pattern discriminating devices 2 and 5 to input the output resulted from the devices 2 and 5 to a heating controlling device 4. In the device 4, said temp. pattern is compared with a standard temp. pattern previously stored in the device 4 to output a speed signal Vm of the material W which is passing through the device 1 and a signal Qi which decides an output pattern in the width direction of the heater. The Qi is sent to a heating inverter 6 to control its output voltage, and the Vm performs a speed control of a motor 8 for driving the table 3 and the temp. distributions in the width and longitudinal directions of the materials W after heating are made uniform.

Description

【発明の詳細な説明】 この発明は、熱間圧延において、圧延される材料の温度
分布が均一になるように制御する圧延温度制御装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rolling temperature control device that controls the temperature distribution of a rolled material to be uniform during hot rolling.

熱間圧延のために材料管連続式加熱炉で加熱する場合、
炉内のスキッドの部分で材料の温度が局部的に低くなる
ことが知られ、これはスキッドマークと呼ばれている。When heating material in a continuous tube heating furnace for hot rolling,
It is known that the temperature of the material becomes locally low at the skid area in the furnace, and this is called a skid mark.

省エネルギの観点から、加熱炉の抽出温度をできるだけ
低くおさえることが望まれる反面、一定品質を確保する
ためにスキッドマーク部の温度を所望の値以上に保持す
ることも必要である。また加熱炉から抽出された材料は
、幅方向および長さ方向の両端部の温度が中央部に比べ
て低くなる傾向を示し、これが圧延製品の形状制御にお
ける外乱の原因となっている。From the viewpoint of energy saving, it is desirable to keep the extraction temperature of the heating furnace as low as possible, but on the other hand, it is also necessary to maintain the temperature of the skid mark portion above a desired value in order to ensure a constant quality. Furthermore, the temperature of the material extracted from the heating furnace tends to be lower at both ends in the width and length directions than in the center, which causes disturbances in shape control of rolled products.

この発明は、上記のような問題点を解決するためになさ
れたもので、圧延時に材料の温度分布が均一になるよう
Ｋ、あらかじめ設定した温度パターン忙もとづいて、材
料を加熱しておくととにより、圧延製品の形状制御を適
確に行うことができるようにした圧延温度制御装置を提
供することを目的としている。This invention was made to solve the above-mentioned problems, and it is possible to heat the material according to a preset temperature pattern so that the temperature distribution of the material becomes uniform during rolling. Accordingly, it is an object of the present invention to provide a rolling temperature control device that can accurately control the shape of a rolled product.

以下にこの発明の一実施例を図について説明する。図中
に符号Ｗで示す圧延材料は、図示しない加熱炉から抽出
されたのち、搬送テーブル３上に形成された搬送系路に
沿って圧延工程に送られるようＫなっている。そしてこ
の搬送系路の上方に、温度パターン認識装置２．加熱装
置１および温度パターン認識装置５がこの順序で配置さ
れている。An embodiment of the present invention will be described below with reference to the drawings. The rolling material indicated by the symbol W in the figure is extracted from a heating furnace (not shown) and then sent to the rolling process along a conveyance path formed on the conveyance table 3. Above this conveyance path, a temperature pattern recognition device 2. The heating device 1 and the temperature pattern recognition device 5 are arranged in this order.

温度パターン認識装置２は、加熱装置１の前段において
、材料Ｗの幅方向における温度分布のパターン（温度パ
ターン）を認識するためのもので、たとえば多数の放射
温度計を材料Ｗの幅方向に並べた構成を有している。あ
るいは温度パターン認識装置２は、赤外線のみを透過さ
せるような周波数選択フィルタを取付けたテレビジョン
カメラを用いて構成することもできる。また他方の温度
パターン認識装置５は、加熱装置１の後段において材料
Ｗの温度パターンを認識するためのもので、温度パター
ン認識装置２と同一の構成を有する。The temperature pattern recognition device 2 is provided before the heating device 1 and is used to recognize a temperature distribution pattern (temperature pattern) in the width direction of the material W, for example, by arranging a large number of radiation thermometers in the width direction of the material W. It has a similar configuration. Alternatively, the temperature pattern recognition device 2 may be configured using a television camera equipped with a frequency selection filter that transmits only infrared rays. The other temperature pattern recognition device 5 is used to recognize the temperature pattern of the material W at the subsequent stage of the heating device 1, and has the same configuration as the temperature pattern recognition device 2.

そして２つの温度パターン認識装置２および５の出力信
号が加熱制御装置４に入力される。実際の出力信号は、
材料Ｗが一定の距離だけ移動するととに幅方向の温度分
布を検出して紀憶し、材料の長さ方向全体にわたってこ
れを繰返して作成された温度分布地図を表わすものであ
る。The output signals of the two temperature pattern recognition devices 2 and 5 are then input to the heating control device 4. The actual output signal is
When the material W moves a certain distance, the temperature distribution in the width direction is detected and memorized, and this is repeated over the entire length of the material to represent a temperature distribution map created.

加熱制御装置４は、温度パターン認識装置２の出力信号
である材料Ｗの温度パターンと、あらかじめ記憶してい
る標準温度パターンとを比較して所定の演算を行い、加
熱装置１の加熱バンクを材料Ｗが通過する速度を示す信
号Ｖｍと、加熱バンクの幅方向における出カバターンを
決定する信号とを出力する。その手順の一例をつぎに示
す。The heating control device 4 compares the temperature pattern of the material W, which is the output signal of the temperature pattern recognition device 2, with a standard temperature pattern stored in advance, performs a predetermined calculation, and controls the heating bank of the heating device 1 to control the material W. A signal Vm indicating the speed at which W passes and a signal determining the output cover turn in the width direction of the heating bank are output. An example of the procedure is shown below.

まず材料Ｗが加熱バンクを通過する速度を仮定する。各
バンクの出力熱量をＱｉとすれば、Ｑｉ＝Ｆ（Ｖｍ、Δ
Ｔｉ）　　　”　（１）ΔＴｉ＝’ｌ’ｉｎ本　−Ｔｉ
ｎ１　　　　　＊１１１１１１　　（２）で表わされる
。First, assume the speed at which the material W passes through the heating bank. If the output heat amount of each bank is Qi, then Qi=F(Vm, Δ
Ti) ” (1)ΔTi='l'in book −Ti
It is expressed as n1 *111111 (2).

Ｆ（Ｖｍ、ΔＴｉ）：投入熱量関数 ｖｍ　：材料搬送速度 Ｔｉｎ　　：入側材料温度の標準値 Ｔｉｎ”ｉ：加熱バンクｉ番目を通過する材料温度ここ
で出力熱量Ｑｉが仮定されると、出側材料温度パターン
が予測される。出側材料温度予測値は（Ｔｏｕｔ”　）
として表わす。F (Vm, ΔTi): Input heat quantity function vm: Material conveyance speed Tin: Standard value of input side material temperature Tin"i: Material temperature passing through the i-th heating bank Here, assuming output heat quantity Qi, the output side The material temperature pattern is predicted. The predicted value of the outlet material temperature is (Tout”)
Expressed as

Ｔｏｕｔ　ｔ　＝Ｇ　（Ｖｍ、Ｑｉ）　　＠１１１１１
１　（３）（ｒ（ｖｍ、ｑｉ）；出側材料温度予測関数
このよう＜−して予測された出側材料温度パターンを標
準温度パターンと比較し、評価する。Tout t = G (Vm, Qi) @11111
1 (3) (r(vm, qi); Outlet side material temperature prediction function The outlet side material temperature pattern predicted in this way is compared with the standard temperature pattern and evaluated.

ＶｍＥＥｉ（Δ’ｌ’ｏｕｔ”ｉ、Ｖｍ、Ｑｉ）　１１
１１１１１１　（４）ΔＴＯＬ１ｔ”ｌ　　”’　　Ｔ
ｏｕｔ”ｔ　　　　７ｚｉＴＸＩ　ｍ出側温度パターン
標準値 このようにして（４）式で評価された値が小さくなるよ
うＫ　Ｖｍ　、　Ｑｉの値を再設定し、この計算を繰り
返し行って出カバターンと搬送速度とを決定する。般送
速度および出カバターンを示す信号は、材料が一定距離
だけ移動するごとに出力される。VmEEi (Δ'l'out”i, Vm, Qi) 11
111111 (4) ΔTOL1t”l ”’ T
out”t 7ziTXI mStandard value of outlet temperature pattern In this way, the values of K Vm and Qi are reset so that the value evaluated by formula (4) becomes smaller, and this calculation is repeated to determine the output cover turn and conveyance speed. A signal indicating the general feed speed and output cover turn is output every time the material moves a certain distance.

加熱装置１が誘導加熱方式のものである場合には、出力
熱量Ｑｉは加熱インバータ装置６に供給され、その出力
電圧を制御する。また搬送速度を示す信号Ｖｍは、搬送
テーブル駆動用サイリスタ装置７に送られ、テーブル駆
動用電動機８の速度７　を制御する。さらに温度パター
ン認識装置５によって得られた出側材料温度パターン地
図は、加熱制御装置４において、予測値との比較から田
側温度予側関数Ｇ（Ｖｍ、Ｑｉ）の修正、学習に使用さ
れる。When the heating device 1 is of an induction heating type, the output heat amount Qi is supplied to the heating inverter device 6 to control its output voltage. Further, the signal Vm indicating the conveyance speed is sent to the conveyance table driving thyristor device 7 to control the speed 7 of the table driving electric motor 8. Further, the outlet material temperature pattern map obtained by the temperature pattern recognition device 5 is used in the heating control device 4 to correct and learn the field side temperature prediction function G (Vm, Qi) by comparing it with the predicted value. .

なお加熱装置１は、幅方向に重油またはガスのバーナを
並べた炉であってもよく、この場合には、加熱インバー
タ装置６の代りＫ、バーナに供給される燃料の流量を調
節するためのパルプ調節装置が用いられる。Note that the heating device 1 may be a furnace in which heavy oil or gas burners are arranged in the width direction, and in this case, instead of the heating inverter device 6, K is used to adjust the flow rate of fuel supplied to the burners. A pulp conditioning device is used.

以上のようにこの発明によれば、圧延ライン上に材料の
温度パターンを制御する加熱装置を設け、材料の幅方向
および長さ方向における温度の不均一をなくしている。As described above, according to the present invention, a heating device for controlling the temperature pattern of the material is provided on the rolling line, thereby eliminating temperature non-uniformity in the width direction and length direction of the material.

したがって材料の温度の不均一が圧延製品の板厚制御精
度や形状制御精度に及ぼす影響を除去し、高品質を確保
しり〜、省エネルギを達成することが可能となる。Therefore, it is possible to eliminate the influence of uneven temperature of the material on the thickness control accuracy and shape control accuracy of rolled products, ensure high quality, and achieve energy savings.

【図面の簡単な説明】[Brief explanation of drawings]

図はこの発明の一実施例による圧延温度制御装置の構成
を示すブロック図である。 １・・・加熱装置、２・・・温度パターン認識装置、３
・・・搬送テーブル、４・−・加熱制御装置、５・・・
温度パターン認識装置、６・・・加熱インバータ装置、
７・・・サイリスタ装置、８・・・電動機、Ｗ・・・材
料。 代理人　葛野信−（ほか１名）The figure is a block diagram showing the configuration of a rolling temperature control device according to an embodiment of the present invention. 1... Heating device, 2... Temperature pattern recognition device, 3
...transport table, 4--heating control device, 5...
Temperature pattern recognition device, 6... heating inverter device,
7... Thyristor device, 8... Electric motor, W... Material. Agent Shin Kuzuno (1 other person)

Claims (1)

【特許請求の範囲】[Claims] 加熱された圧延材料を圧延機に所定の速度で搬送する搬
送テーブルと、この搬送テーブルによって搬送されてい
る上記圧延材料をその幅方向において所定の温度パター
ンになるように加熱する加熱装置と、この加熱装置の前
段および後段において上記圧延材料の温度パターンをそ
れぞれ検出する２つの温度パターン認識装置と、両温度
パターン認織装置によって認識された温度パターンを標
準温度パターンと比較することＫより加熱バター／を演
算し、この演算結果にもとづいて、上記搬送テーブルお
よび上記加熱装置を制御するための出力信号を送出する
加熱制御装置とを備えた圧延温度制御装置。a conveyance table that conveys the heated rolled material to the rolling mill at a predetermined speed; a heating device that heats the rolled material being conveyed by the conveyance table to a predetermined temperature pattern in its width direction; The heating butter/ and a heating control device that calculates the calculation result and sends out an output signal for controlling the conveying table and the heating device based on the calculation result.
JP56099382A 1981-06-24 1981-06-24 Controlling device for rolling temperature Pending JPS58310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56099382A JPS58310A (en) 1981-06-24 1981-06-24 Controlling device for rolling temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56099382A JPS58310A (en) 1981-06-24 1981-06-24 Controlling device for rolling temperature

Publications (1)

Publication Number Publication Date
JPS58310A true JPS58310A (en) 1983-01-05

Family

ID=14245960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56099382A Pending JPS58310A (en) 1981-06-24 1981-06-24 Controlling device for rolling temperature

Country Status (1)

Country Link
JP (1) JPS58310A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147701A (en) * 1983-02-15 1984-08-24 Nippon Steel Corp Direct hot rolling equipment of billet
JPS60244418A (en) * 1984-05-19 1985-12-04 Meidensha Electric Mfg Co Ltd Re-heating of plate-like material
JPS63126609A (en) * 1986-11-18 1988-05-30 Sumitomo Metal Ind Ltd Production of hot rolled steel material
KR100321037B1 (en) * 1997-11-10 2002-04-17 이구택 Apparatus and method for preventing temperature deviation of material to be rolled awaiting hot rolling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147701A (en) * 1983-02-15 1984-08-24 Nippon Steel Corp Direct hot rolling equipment of billet
JPS60244418A (en) * 1984-05-19 1985-12-04 Meidensha Electric Mfg Co Ltd Re-heating of plate-like material
JPH0575486B2 (en) * 1984-05-19 1993-10-20 Meidensha Electric Mfg Co Ltd
JPS63126609A (en) * 1986-11-18 1988-05-30 Sumitomo Metal Ind Ltd Production of hot rolled steel material
KR100321037B1 (en) * 1997-11-10 2002-04-17 이구택 Apparatus and method for preventing temperature deviation of material to be rolled awaiting hot rolling

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