JPH03100126A - Apparatus for controlling catenary in furnace - Google Patents

Apparatus for controlling catenary in furnace

Info

Publication number
JPH03100126A
JPH03100126A JP23720089A JP23720089A JPH03100126A JP H03100126 A JPH03100126 A JP H03100126A JP 23720089 A JP23720089 A JP 23720089A JP 23720089 A JP23720089 A JP 23720089A JP H03100126 A JPH03100126 A JP H03100126A
Authority
JP
Japan
Prior art keywords
catenary
furnace
tension
detector
steel strip
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
JP23720089A
Other languages
Japanese (ja)
Inventor
Yasuaki Senzaki
康朗 先崎
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP23720089A priority Critical patent/JPH03100126A/en
Publication of JPH03100126A publication Critical patent/JPH03100126A/en
Pending legal-status Critical Current

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  • Control Of Heat Treatment Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To keep catenary quantity in a furnace to constant by arranging a detector for tension at inlet and outlet sides in the furnace at the time of burning a steel strip coated with a coating and enabling a restraint on variation of the catenary shape when welded part passes through the furnace. CONSTITUTION:This catenary control apparatus in the furnace is provided to a steel strip treating equipment for burning the steel strip 1 coated with a coat in the furnace. This is composed of driving devices 6, 7 at the inlet and outlet sides for driving bridle rolls 2, 3 at inlet and outlet sides in the furnace according to the line speed set value, tension detector 4, tension control device 8, catenary detector 5 and catenary shape operating means 10. Comparison signal between the catenary quantity reference value from the above operating means 10 and the catenary detected quantity from the above detector 5, is given as the tension reference to the above tension device 8. Together with this, tension reference correcting signal from the above means 10 is given as the correcting signal of the tension reference to the above device 8.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は鋼帯表面に塗料を塗布した後、炉内にて塗料の
焼付けを行なう鋼板処理設備において、特に炉内での鋼
帯のカテナリー量を一定に保ち得るようにした炉内カテ
ナリー制御装置に関する。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention is applicable to steel plate processing equipment in which a paint is applied to the surface of a steel strip and then baked in a furnace, particularly in a furnace. The present invention relates to an in-furnace catenary control device that can maintain a constant amount of catenary in a steel strip.

(従来の技術) 従来から、鋼帯表面に塗料を塗布した後、炉内にて塗料
の焼付けを行なう鋼板処理設備においては、炉内での鋼
帯のカテナリー量は、炉の近傍に設置されたカテナリー
検出器によって検出されるカテナリー量が一定となるよ
うに制御されている。
(Prior art) Conventionally, in steel plate processing equipment in which paint is applied to the surface of the steel strip and then baked in a furnace, the catenary of the steel strip in the furnace is The amount of catenary detected by the catenary detector is controlled to be constant.

しかしながら、実際に炉内での鋼帯のカテナリー量を一
定に制御したい位置は、カテナリー検出器の設置位置で
はなく、例えば炉内カテナリー量の最大となる位置であ
る。すなわち、板厚、板幅の異なる鋼帯を接続した溶接
部が炉内を通過する際は、炉内鋼帯の単位長さ当りの重
量が時々刻々と変化するため、カテナリー形状が変動す
る。従って、従来におけるカテナリー検出器の設置位置
でのカテナリー量一定制御では、炉内での鋼帯のカテナ
リー量の最大値を一定に保つことは困難である。
However, the actual position at which it is desired to control the amount of catenary in the steel strip constant in the furnace is not the installation position of the catenary detector, but, for example, the position where the amount of catenary in the furnace is maximum. That is, when a welded joint connecting steel strips of different thicknesses and widths passes through a furnace, the weight per unit length of the steel strip in the furnace changes from moment to moment, so the catenary shape changes. Therefore, in the conventional constant catenary amount control at the installation position of the catenary detector, it is difficult to keep the maximum value of the catenary amount of the steel strip in the furnace constant.

(発明が解決しようとする課題) 以上のように従来では、鋼帯の溶接部が炉内を通過する
際にカテナリー形状が変動することから、炉内での鋼帯
のカテナリー量を一定に保つことができないという問題
があった。
(Problem to be solved by the invention) As described above, in the past, the catenary shape changes when the welded part of the steel strip passes through the furnace, so the amount of catenary of the steel strip in the furnace is kept constant. The problem was that I couldn't do it.

本発明の目的は、鋼帯の溶接部が炉内を通過する際のカ
テナリー形状変動を抑え、炉内での鋼帯のカテナリー量
を一定に保つことが可能な信頼性の高い炉内カテナリー
制御装置を提供することにある。
An object of the present invention is to provide highly reliable in-furnace catenary control that can suppress changes in the catenary shape when the welded part of the steel strip passes through the furnace and keep the amount of catenary of the steel strip constant in the furnace. The goal is to provide equipment.

[発明の構成] (課題を解決するための手段) 上記の目的を達成するために本発明では、鋼帯表面に塗
料を塗布した後、炉内にて塗料の焼付けを行なう鋼板処
理設備において、炉の入側ブライドルおよび出側ブライ
ドルを、ライン速度設定値に応じてそれぞれ各別に駆動
する入側ドライブ装置および出側ドライブ装置と、炉の
入側部または出側部のいずれか一方に設置され、炉入側
部張力または炉入側部張力を検出する張力検出器と、張
力検出器からの張力検出量と張力基準との比較結果に応
じて、速度補正信号を入側ドライブ装置または出側ドラ
イブ装置に与える張力制御装置と、炉の近傍位置に設置
され、炉内の鋼帯のカテナリー量を検出するカテナリー
検出器と、炉内を通過する鋼帯溶接部の前後の板厚、板
幅を記憶し、これを基に炉内でのカテナリー形状を算出
してカテナリー量基準値を出力すると共に、当該カテナ
リー量基準値を目標カテナリー形状に一致させるべく張
力基準補正信号を出力するカテナリー形状演算手段とを
備え、カテナリー形状演算手段からのカテナリー量基準
値とカテナリー検出器からのカテナリー検出量との比較
信号を、張力制御装置への張力基準として与えると共に
、カテナリー形状演算手段からの張力基準補正信号を張
力制御装置へ張力基準の補正信号として与えるようにし
ている。
[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a steel plate processing equipment that applies a paint to the surface of a steel strip and then bakes the paint in a furnace. An inlet drive device and an outlet drive device each drive the inlet bridle and outlet bridle of the furnace separately according to the line speed setting, and the , a tension detector that detects the furnace entry side tension or the furnace entry side tension, and a speed correction signal is sent to the entry side drive device or the exit side according to the comparison result between the tension detection amount from the tension detector and the tension reference. A tension control device that applies to the drive device, a catenary detector that is installed near the furnace and detects the amount of catenary in the steel strip in the furnace, and plate thickness and width before and after the welded part of the steel strip that passes through the furnace. is stored, and based on this, the catenary shape in the furnace is calculated and a catenary amount reference value is output.The catenary shape calculation also outputs a tension reference correction signal to match the catenary amount reference value with the target catenary shape. means, which provides a comparison signal between the catenary amount reference value from the catenary shape calculation means and the catenary detection amount from the catenary detector as a tension reference to the tension control device, and also provides tension reference correction from the catenary shape calculation means. The signal is given to the tension control device as a tension reference correction signal.

(作用) 従って、本発明の炉内カテナリー制御装置においては、
鋼帯の溶接部が炉内を通過する際の炉内カテナリー形状
がカテナリー形状演算手段で時々刻々算出され、カテナ
リー検出器によって得られるカテナリー検出量と、カテ
ナリー形状演算手段によって与えられるカテナリー量基
準値とが比較されて、両者が一致するように張力制御装
置へ張力基準が与えられることにより、炉入側部または
炉出側部のうちいずれか一方の張力が補正されると同時
に、カテナリー量検出器の設置位置でのカテナリー量基
準値が目標カテナリー形状と一致するように、張力制御
装置の張力基準が補正されることにより、上記の補正と
同等のループでのカテナリー制御が行なわれる。
(Function) Therefore, in the in-furnace catenary control device of the present invention,
The shape of the catenary inside the furnace when the welded part of the steel strip passes through the furnace is calculated every moment by the catenary shape calculation means, and the catenary detection amount obtained by the catenary detector and the catenary amount reference value given by the catenary shape calculation means are calculated from time to time by the catenary shape calculation means. is compared, and a tension reference is given to the tension control device so that the two match, thereby correcting the tension on either the furnace entry side or the furnace exit side, and at the same time detecting the catenary amount. By correcting the tension reference of the tension control device so that the catenary amount reference value at the installation position of the device matches the target catenary shape, catenary control is performed in a loop equivalent to the above correction.

(実施例) まず、本発明の考え方について説明する。(Example) First, the concept of the present invention will be explained.

第2図は、本発明を適用する鋼板処理設備の一例を示す
構成図である。炉内での鋼帯1のカテナリー形状は、第
2図におけるカテナリー支持点間距離をL[m]、カテ
ナリー中央部(x −L / 2 )での垂下量をf。
FIG. 2 is a configuration diagram showing an example of steel plate processing equipment to which the present invention is applied. Regarding the catenary shape of the steel strip 1 in the furnace, the distance between the catenary support points in FIG. 2 is L [m], and the amount of droop at the catenary center (x-L/2) is f.

[m]、鋼帯1の単位長重量をW [kg/ m ] 
、カテナリー支持点(x−0)での水平張力をTH[k
g]とすると、(1)式のような関係が成り立つ。
[m], unit length weight of steel strip 1 is W [kg/m]
, the horizontal tension at the catenary support point (x-0) is TH[k
g], the relationship shown in equation (1) holds true.

f O−WL2 /8TH−・”  (1)この時の鋼
帯1の全重量をW [kglとし、鋼帯1の溶接部を挟
みw ’  [)cg / m ]の鋼帯1がカテナリ
ー支持点(x−0)を通過してから以降の任意点j (
j=1.2.・・・・・・、i)の位置での垂下量f、
は、カテナリー中間点r (r=1.2.・・・・・・
、i)においてQ、−(W−W”)の単位長荷重が分布
してかかるものと考えると、下記の(2)式により与え
られる。但し、溶接部より下流側のQ、は0 (Q、−
〇)となる。また、WおよびW′は、鋼板1の板厚t、
板幅すより求められる。
f O-WL2 /8TH-・" (1) The total weight of the steel strip 1 at this time is W [kgl, and the steel strip 1 of w' [)cg/m] across the welded part of the steel strip 1 is the catenary support. Any point j (
j=1.2. ......, the amount of drooping f at the position i),
is the catenary midpoint r (r=1.2...
, i), assuming that a unit length load of Q,-(W-W'') is distributed and applied, it is given by the following equation (2).However, Q, on the downstream side of the weld is 0 ( Q, -
〇). In addition, W and W' are the plate thickness t of the steel plate 1,
Determined from the board width.

但し、 ko −0(x−ko −t、−5o)、k  ++1
  −1(x  −k  l+l   ”  L  −
L  )G −[1+ 12((Σ 唱 n)k、(1−に、) + (Σ n )  2k g  (1−k g  )
ここで、 唱 f。
However, ko −0(x−ko −t, −5o), k ++1
−1(x −k l+l ” L −
L ) G - [1+ 12 ((Σ chant n) k, (1- to,) + (Σ n ) 2kg g (1-kg g )
Here, chant f.

「麟コ ・・・・・・ (2) ここで、 5−fo/L。“Rinko ・・・・・・(2) here, 5-fo/L.

k、−mL/x  (r−1,2,−−−−・−i)な
お、第2図中2および3は、炉の入側ブライドルおよび
出側ブライドルを示すものである。
k, -mL/x (r-1, 2, ----.-i) Note that 2 and 3 in FIG. 2 indicate the inlet bridle and the outlet bridle of the furnace.

本発明では、上記(2)式により算出した各点の垂下量
’ r  (J−I +  21 ・・・・・・r  
t)がらカテナリー形状を求め、カテナリー量が一定と
なるように(1)式内の水平張力THを補正すべく、炉
入側部または炉出側部の張力を補正すると共に、カテナ
リー検出器の設置位置でのカテナリー量基準値を目標カ
テナリー形状と一致するように補正し、上記の補正と同
等のループでのフィードバック制御を行なうものである
In the present invention, the amount of drooping at each point calculated by the above formula (2) 'r (J-I + 21...r
t) Find the catenary shape, and correct the tension at the furnace entry side or the furnace exit side in order to correct the horizontal tension TH in equation (1) so that the catenary amount is constant, and also correct the tension of the catenary detector. The catenary amount reference value at the installation position is corrected to match the target catenary shape, and feedback control is performed in a loop similar to the above correction.

以下、上記のような考え方に基づく本発明の一実施例に
ついて、図面を参照して説明する。
An embodiment of the present invention based on the above concept will be described below with reference to the drawings.

第1図は、本発明の炉内カテナリー制御装置を鋼板処理
設備に適用した場合の構成例を示す図であり、第2図と
同一要素には同一符号を付して示している。第1図にお
いて、鋼帯1は、その表面に塗料を塗布した後、塗料の
焼付けを行なうために、炉の入側ブライドル2と出側ブ
ライドル3とにより炉内を搬送するようになっている。
FIG. 1 is a diagram illustrating a configuration example when the in-furnace catenary control device of the present invention is applied to steel plate processing equipment, and the same elements as in FIG. 2 are denoted by the same reference numerals. In FIG. 1, a steel strip 1 is conveyed through the furnace by an inlet bridle 2 and an outlet bridle 3 in order to bake the paint after coating its surface. .

一方、炉の入側部には、炉入側部張力を検出する張力検
出器4を設置している。また、炉の近傍位置には、炉内
の鋼帯1のカテナリー量を検出するカテナリー検出器5
を設置している。さらに、炉の入側および出側には、入
側ブライドル2および出側ブライドル3を、ライン速度
設定値S、に応じてそれぞれ各別に駆動する入側ドライ
ブ装置(ASR)6および出側ドライブ装置(A S 
R)7を備えている。さらにまた、炉の入側には、張力
検出器4からの張力検出flAと後述する張力基準Bと
を比較し、その比較結果である偏差に応じて速度補正信
号Cを入側ドライブ装置6に与える張力制御装置(AT
R)8を備えている。
On the other hand, a tension detector 4 for detecting the tension at the entrance side of the furnace is installed at the entrance side of the furnace. In addition, a catenary detector 5 is installed near the furnace to detect the amount of catenary in the steel strip 1 in the furnace.
is installed. Further, on the inlet and outlet sides of the furnace, an inlet drive device (ASR) 6 and an outlet drive device are provided that drive the inlet bridle 2 and the outlet bridle 3 separately according to the line speed setting value S, respectively. (A.S.
R) 7. Furthermore, on the inlet side of the furnace, the tension detection flA from the tension detector 4 is compared with a tension reference B, which will be described later, and a speed correction signal C is sent to the inlet drive device 6 in accordance with the deviation that is the comparison result. Tension control device (AT)
R) 8.

一方、本実施例では、設定器9と、カテナリー形状演算
手段10と、偏差算出器11とを備えている。ここで、
設定器9は、鋼帯1の板厚t、板幅すを設定出力するも
のである。また、カテナリー形状演算手段10は、設定
器9からの板厚t。
On the other hand, this embodiment includes a setting device 9, a catenary shape calculation means 10, and a deviation calculator 11. here,
The setting device 9 is for setting and outputting the plate thickness t and plate width of the steel strip 1. Further, the catenary shape calculating means 10 calculates the plate thickness t from the setting device 9.

板幅すを入力とし、炉内を通過する鋼帯1溶接部の前後
の板厚、板幅を記憶し、これを基に前述の(1)式、(
2)式により、炉内でのカテナリー形状f1を算出して
カテナリー量基準値りを出力すると共に、当該カテナリ
ー量基準値りを目標カテナリー形状に一致させるべく張
力基準補正信号(張力基準Bの補正信号)Eを出力する
ものである。さらに、偏差算出器11は、カテナリー形
状演算手段10からのカテナリー量基準値りとカテナリ
ー検出器5からのカテナリー検出ff1Fとを比較して
その偏差を算出し、当該偏差信号を上記張力制御装置8
への張力基準Bとして与えるものである。
With the plate width as input, the plate thickness and plate width before and after the welded part of steel strip 1 passing through the furnace are memorized, and based on this, the above-mentioned formula (1), (
2) calculates the catenary shape f1 in the furnace and outputs the catenary amount reference value, and also outputs the tension reference correction signal (correction of tension reference B) in order to match the catenary amount reference value with the target catenary shape. The signal (signal) E is output. Further, the deviation calculator 11 compares the catenary amount reference value from the catenary shape calculation means 10 and the catenary detection ff1F from the catenary detector 5 to calculate the deviation, and transmits the deviation signal to the tension control device 8.
This is given as the tension reference B to the

次に、かかる構成の炉内カテナリー制御装置の作用につ
いて説明する。
Next, the operation of the in-furnace catenary control device having such a configuration will be explained.

第1図において、カテナリー形状演算手段1゜によって
与えられるカテナリー量基準値りと、カテナリー検出器
5によって得られるカテナリー検出i1Fととは、偏差
算出器11で比較してその偏差が求められ、この偏差信
号が張力制御装置8への張力基準Bとして与えられる。
In FIG. 1, the catenary amount reference value given by the catenary shape calculation means 1° and the catenary detection i1F obtained by the catenary detector 5 are compared by a deviation calculator 11 to find the deviation. The deviation signal is provided as a tension reference B to the tension control device 8.

また、炉入側部の張力が張力検出器4によって検出され
、この張力検出量Aが張力制御装置8へ与えられる。こ
れにより、張力制御装置8では、これら張力検出量Aと
張力基準Bとが比較され、その偏差に応じて速度補正信
号Cが入側ドライブ装置6に与えられる。そして、入側
ブライドル2が、この速度補正信号Cとライン速度設定
値S、とに応じて、入側ドライブ装置6によって運転さ
れることにより、炉入側部の張力が補正される。一方、
これと同時に、鋼帯1の板厚t、板幅すが設定器9によ
ってカテナリー形状演算手段10に与えられ、鋼帯1の
溶接部が炉内を通過する際のカテナリー形状f、の変動
が求められ、目標カテナリー形状との差分を0とするよ
うに、すなわちカテナリー量基準値りを目標カテナリー
形状に一致させるように、張力基準補正信号Eが張力制
御装置8へ与えられる。これにより、張力制御装置8の
張力基準Bが補正されて、同様にして炉入側部の張力が
補正される。なお、出側ブライドル3は、速度補正信号
Cに応じた速度基準で、出側ドライブ装置7によって運
転される。
Further, the tension at the furnace entry side is detected by the tension detector 4, and this tension detection amount A is given to the tension control device 8. As a result, the tension control device 8 compares the detected tension amount A with the tension reference B, and provides a speed correction signal C to the inlet drive device 6 in accordance with the deviation. Then, the entry side bridle 2 is operated by the entry side drive device 6 according to the speed correction signal C and the line speed setting value S, thereby correcting the tension on the furnace entry side. on the other hand,
At the same time, the thickness t of the steel strip 1 and the width of the steel strip are given to the catenary shape calculation means 10 by the width setting device 9, and the changes in the catenary shape f when the welded part of the steel strip 1 passes through the furnace are calculated. The tension reference correction signal E is given to the tension control device 8 so that the difference from the target catenary shape is zero, that is, the catenary amount reference value is made to match the target catenary shape. As a result, the tension reference B of the tension control device 8 is corrected, and the tension at the furnace entry side is corrected in the same way. Note that the exit bridle 3 is driven by the exit drive device 7 with a speed reference based on the speed correction signal C.

上述したように、本実施例の炉内カテナリー制御装置で
は、鋼帯1の溶接部が炉内を通過する際の炉内カテナリ
ー形状がカテナリー形状演算手段10で時々刻々算出さ
れ、カテナリー検出器5によって得られるカテナリー検
出ff1Fと、カテナリー形状演算手段10によって与
えられるカテナリー量基準値りとが比較されて、両者が
一致するように炉入側部の張力制御装置8へ張力基準B
が与えられることにより、炉入側部の張力が補正される
と同時に、カテナリー量検出器5の設置位置でのカテナ
リー量基準値りが目標カテナリー形状と一致するように
、張力制御装置8の張力基準Bが補正されることにより
、上記の補正と同等のループでのカテナリー制御が行な
われる。これにより、鋼帯1の溶接部が炉内を通過する
際のカテナリー形状変動を抑え、炉内での鋼帯のカテナ
リー量を一定に保つことが可能となり、もって省力化が
図れると共に、鋼板処理設備の規模縮小による設備費の
低減を図ることができる。
As described above, in the in-furnace catenary control device of this embodiment, the shape of the in-furnace catenary when the welded part of the steel strip 1 passes through the furnace is calculated moment by moment by the catenary shape calculation means 10, and The catenary detection ff1F obtained by is compared with the catenary amount reference value given by the catenary shape calculating means 10, and the tension reference B is sent to the tension control device 8 at the entrance side of the furnace so that the two match.
is given, the tension of the furnace entry side is corrected, and at the same time, the tension of the tension control device 8 is adjusted so that the catenary amount reference value at the installation position of the catenary amount detector 5 matches the target catenary shape. By correcting the reference B, catenary control is performed in a loop equivalent to the above correction. As a result, it is possible to suppress changes in the catenary shape when the welded part of the steel strip 1 passes through the furnace, and to keep the amount of catenary of the steel strip constant in the furnace, thereby saving labor and processing the steel sheet. It is possible to reduce equipment costs by downsizing the equipment.

尚、上記実施例では、炉入側部に張力検出器4を設置し
、炉入側部の張力を補正することによりカテナリー制御
を行なう場合について述べたが、これに限らず炉出側部
に張力検出器を設置し、炉出側部の張力を補正すること
によりカテナリー制御を行なうようにしても、上述と同
様の効果が得られるものである。
In the above embodiment, a case has been described in which the tension detector 4 is installed on the furnace entry side and catenary control is performed by correcting the tension on the furnace entry side, but this is not limited to this. Even if a tension detector is installed and catenary control is performed by correcting the tension on the exit side of the furnace, the same effect as described above can be obtained.

[発明の効果] 以上説明したように本発明によれば、鋼帯の溶接部が炉
内を通過する際のカテナリー形状変動を抑え、炉内での
鋼帯のカテナリー量を一定に保つことが可能な極めて信
頼性の高い炉内カテナリー制御装置が提供できる。
[Effects of the Invention] As explained above, according to the present invention, it is possible to suppress changes in the catenary shape when the welded part of the steel strip passes through the furnace, and to keep the amount of catenary of the steel strip constant in the furnace. An extremely reliable in-core catenary control device can be provided.

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

第1図は本発明の炉内カテナリー制御装置を鋼板処理設
備に適用した場合の一実施例を示す構成図、第2図は本
発明の詳細な説明するための鋼板処理設備の一例を示す
図である。 1・・・鋼帯、2・・・入側ブライドル、3・・・出側
ブライドル、4・・・張力検出器、5・・・カテナリー
検出器、6・・・入側ドライブ装置、7・・・出側ドラ
イブ装置、8・・・張力制御装置、9・・・設定器、1
0・・・カテナリー形状演算手段、11・・・偏差算出
器。
Fig. 1 is a configuration diagram showing an embodiment of the in-furnace catenary control device of the present invention applied to steel plate processing equipment, and Fig. 2 is a diagram showing an example of steel plate processing equipment for explaining the present invention in detail. It is. DESCRIPTION OF SYMBOLS 1... Steel strip, 2... Inlet side bridle, 3... Outlet side bridle, 4... Tension detector, 5... Catenary detector, 6... Inlet side drive device, 7... ...Output side drive device, 8...Tension control device, 9...Setting device, 1
0... Catenary shape calculation means, 11... Deviation calculator.

Claims (1)

【特許請求の範囲】 鋼帯表面に塗料を塗布した後、炉内にて塗料の焼付けを
行なう鋼板処理設備において、 前記炉の入側ブライドルおよび出側ブライドルを、ライ
ン速度設定値に応じてそれぞれ各別に駆動する入側ドラ
イブ装置および出側ドライブ装置と、 前記炉の入側部または出側部のいずれか一方に設置され
、炉入側部張力または炉出側部張力を検出する張力検出
器と、 前記張力検出器からの張力検出量と張力基準との比較結
果に応じて、速度補正信号を前記入側ドライブ装置また
は出側ドライブ装置に与える張力制御装置と、 前記炉の近傍位置に設置され、炉内の鋼帯のカテナリー
量を検出するカテナリー検出器と、前記炉内を通過する
鋼帯溶接部の前後の板厚、板幅を記憶し、これを基に炉
内でのカテナリー形状を算出してカテナリー量基準値を
出力すると共に、当該カテナリー量基準値を目標カテナ
リー形状に一致させるべく張力基準補正信号を出力する
カテナリー形状演算手段とを備え、 前記カテナリー形状演算手段からのカテナリー量基準値
と前記カテナリー検出器からのカテナリー検出量との比
較信号を、前記張力制御装置への張力基準として与える
と共に、前記カテナリー形状演算手段からの張力基準補
正信号を前記張力制御装置へ張力基準の補正信号として
与えるようにしたことを特徴とする炉内カテナリー制御
装置。
[Scope of Claims] In steel plate processing equipment in which paint is applied to the surface of the steel strip and then baked in a furnace, an inlet bridle and an outlet bridle of the furnace are controlled according to a line speed setting value. An inlet drive device and an outlet drive device that are driven separately, and a tension detector that is installed on either the inlet side or the outlet side of the furnace and detects the furnace inlet side tension or the furnace outlet side tension. and a tension control device that applies a speed correction signal to the input side drive device or the output side drive device according to the comparison result between the tension detection amount from the tension detector and the tension reference, and installed at a position near the furnace. A catenary detector detects the amount of catenary in the steel strip in the furnace, and the plate thickness and width before and after the welded part of the steel strip passing through the furnace are memorized, and based on this, the catenary shape in the furnace is determined. and a catenary shape calculation means for calculating a catenary amount reference value and outputting a tension reference correction signal to make the catenary amount reference value coincide with a target catenary shape, the catenary amount from the catenary shape calculation means A comparison signal between a reference value and a catenary detection amount from the catenary detector is provided as a tension reference to the tension control device, and a tension reference correction signal from the catenary shape calculation means is provided to the tension control device as a tension reference. An in-furnace catenary control device characterized in that a correction signal is given as a correction signal.
JP23720089A 1989-09-14 1989-09-14 Apparatus for controlling catenary in furnace Pending JPH03100126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23720089A JPH03100126A (en) 1989-09-14 1989-09-14 Apparatus for controlling catenary in furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23720089A JPH03100126A (en) 1989-09-14 1989-09-14 Apparatus for controlling catenary in furnace

Publications (1)

Publication Number Publication Date
JPH03100126A true JPH03100126A (en) 1991-04-25

Family

ID=17011859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23720089A Pending JPH03100126A (en) 1989-09-14 1989-09-14 Apparatus for controlling catenary in furnace

Country Status (1)

Country Link
JP (1) JPH03100126A (en)

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