JPH06212286A - Method for changing tension of continuous heat treatment equipment of strip - Google Patents

Method for changing tension of continuous heat treatment equipment of strip

Info

Publication number
JPH06212286A
JPH06212286A JP548493A JP548493A JPH06212286A JP H06212286 A JPH06212286 A JP H06212286A JP 548493 A JP548493 A JP 548493A JP 548493 A JP548493 A JP 548493A JP H06212286 A JPH06212286 A JP H06212286A
Authority
JP
Japan
Prior art keywords
tension
strip
heat treatment
furnace
changing
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
JP548493A
Other languages
Japanese (ja)
Inventor
Toshinao Mizuguchi
俊直 水口
Sukebumi Takemura
資文 武村
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP548493A priority Critical patent/JPH06212286A/en
Publication of JPH06212286A publication Critical patent/JPH06212286A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE:To provide a method for changing the tension of continuous heat treatment equipment of the strip which is improved so that the roll grip may not be damaged even in the case where the dissimilar strip with which the appropriate tension difference is relatively large is continuously treated. CONSTITUTION:In passing the strip, the roll slip and rapid fluctuation of the tension are prevented by using a tension changing table and a tension changing speed table for each material and size which are preliminarily determined corresponding to the passing position of the tension changing point, and the tension is changed without generating meandering, buckling or slack of the strip. This constitution prevents generation of meandering, buckling and slack of the strip in passing the dissimilar strip where the appropriate tension difference is large through the continuous heat treatment equipment, enables rapid change to the appropriate tension, suppresses the tension fluctuation when the tension setting is changed to <=20kgf, and enables stable passing of the thin and wide strip.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、適正張力が互いに異な
る鋼帯を接続して連続的に熱処理する鋼帯の連続熱処理
設備の張力変更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 method for changing the tension of a continuous heat treatment facility for steel strips, in which steel strips having different proper tensions are connected to each other and heat treated continuously.

【0002】[0002]

【従来の技術】従来、連続熱処理炉、特に連続焼鈍炉に
おいては処理対象である鋼帯等の金属ストリップを搬送
しながらライン中の各処理炉において各処理を施してい
る。このような連続プロセスラインで、ストリップを良
好に処理するためにはライン内、特に処理炉に通板され
ているストリップに適切な張力を付与することが重要で
ある。このストリップに付与する張力が適正でなく、焼
鈍炉内を通過されたストリップの張力が低い場合、スト
リップが蛇行してストリップの幅方向張力が不均一とな
って板破断が生じたり、また、この蛇行が大きくなっ
て、ストリップ端部が焼鈍炉内に接触して板破断が生じ
るなどして、ライン停止に至る恐れがあり、一方、スト
リップの張力が高い場合にはストリップに幅縮みやヒー
トバックリング等が発生したり、板破断が生じたりする
恐れがある。
2. Description of the Related Art Conventionally, in a continuous heat treatment furnace, particularly in a continuous annealing furnace, each treatment is carried out in each treatment furnace in a line while transporting a metal strip such as a steel strip to be treated. In order to properly process the strip in such a continuous process line, it is important to apply proper tension to the strip, particularly the strip threaded through the processing furnace. When the tension applied to this strip is not proper and the tension of the strip passed through the annealing furnace is low, the strip meanders and the tension in the width direction of the strip becomes non-uniform, causing plate breakage, or The meandering becomes large, and the strip end may come into contact with the annealing furnace, causing plate breakage, which may lead to a line stop.On the other hand, if the strip tension is high, the strip may shrink or heat back. There is a risk of ringing or plate breakage.

【0003】しかも、板厚、板幅及び材質などが互いに
異なるストリップを接続し、連続的に熱処理炉に通板す
るためには、ストリップ毎の適正張力が異なるため、接
続部の通過に合わせて張力の変更を行う必要がある。そ
こで従来は熱処理炉内を複数のセクションに区分けし、
そのセクションの代表張力測定位置を接続部が通過する
タイミングに合わせてそのセクション全体の張力を一挙
に目標張力値に変更するような制御することが一般的で
あった。
Moreover, in order to connect strips having different plate thicknesses, plate widths, materials, etc., and to continuously pass the strips through the heat treatment furnace, the proper tensions of the strips differ, so that the strips should be passed according to the passage of the connecting portion. It is necessary to change the tension. Therefore, in the past, the heat treatment furnace was divided into multiple sections,
In general, the representative tension measurement position of the section is controlled so that the tension of the entire section is changed to the target tension value all at once in accordance with the timing at which the connecting portion passes.

【0004】[0004]

【発明が解決しようとする課題】上述したように、異種
ストリップ間の適正張力差が比較的大きい場合には、各
セクション間の設定張力差がストリップ送りロールのグ
リップ力を上回ることとなり、ロールとストリップとの
間でスリップが生じるという問題があった。本発明は、
このような従来技術の問題を解消すべくものであり、そ
の目的は、適正張力差が比較的大きな異種ストリップを
連続処理する場合にも、ロールグリップが損なわれずに
済むように改善されたストリップ連続熱処理設備の張力
変更方法を提供することにある。
As described above, when the appropriate tension difference between different types of strips is relatively large, the set tension difference between the sections exceeds the grip force of the strip feed roll, and the There is a problem that slip occurs with the strip. The present invention is
The purpose of this invention is to solve the problems of the prior art, and the purpose thereof is to improve the strip continuity so that the roll grip is not impaired even when different strips having a relatively large appropriate tension difference are continuously processed. It is to provide a method for changing the tension of heat treatment equipment.

【0005】[0005]

【課題を解決するための手段】このような目的を達成す
るために、本発明は鋼帯の通板において、張力変更点の
通過位置に対応して予め設定した張力変更テーブル及び
材質、サイズ毎の張力変更速度テーブルを用いることに
より、ロールのスリップや張力の急激な変動を防止し、
鋼帯のバックリング、蛇行及びたるみを発生させずに張
力変更を行うことを特徴とする鋼帯の連続熱処理設備の
張力変更方法にある。
In order to achieve such an object, the present invention relates to a steel strip passing plate, in which a tension change table and a material and a size are set in advance corresponding to a passing position of a tension change point. By using the tension change speed table of, the roll slip and the sudden change of tension are prevented,
A tension changing method for continuous heat treatment equipment for a steel strip, characterized in that the tension is changed without causing buckling, meandering and slack of the steel strip.

【0006】[0006]

【作用】このような構成によれば、張力設定変更点の通
過位置に対応して適宜な値に予め設定したセクション毎
の張力変更率テーブル及び材質、サイズ毎のバックリン
グ、蛇行及びたるみを発生させない張力変更速度テーブ
ルを用いて、張力設定変更点の通過位置、ストリップ材
質およびサイズによってそれらテーブルから検索された
張力変更率、張力変更速度に基づいて張力設定を変更す
ることが出来る。
According to this structure, the tension change rate table and material for each section, the buckling for each size, the meandering and the slack that are set to appropriate values corresponding to the passing positions of the tension setting change points are generated. It is possible to change the tension setting on the basis of the tension change rate and the tension change speed retrieved from the tension setting change point passing position, the strip material and the size by using the tension change speed table which is not allowed.

【0007】以下本発明について図面に従って詳細に説
明する。図1は、本発明に適用される鋼帯の連続焼鈍設
備に概略図である。図1に示すように、焼鈍炉の入側に
設置されたペイオフリール1からストリップ2が連続的
二供給されるが、先のストリップの終端に後のストリッ
プの先端が溶接接続装置3にて溶接され、次いでクリー
ニング装置4を経て、入側レーパー5にて供給量が調節
された上で熱処理を行うための炉内に送り込まれる。そ
して加熱炉6、均熱炉7、一次冷却炉8、過時効炉9、
二次冷却炉10を経て所定の熱サイクルに従って熱処理
されたストリップ2は、出側ルーパー11にて繰り出し
量が調節された上でスキンパスミル12に送り込まれ
る。このスキンパスミル12にて調質圧延された後、検
査精整装置13にて分割、あるいは不良部分が除去さ
れ、テンションリール14に処理済みのストリップ2が
巻き取られる。なお、各炉内には、ストリップ2に適宜
な張力を与えて連続的に走行させるためのハースロール
15が多数設けられている。
The present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic view of a steel strip continuous annealing equipment applied to the present invention. As shown in FIG. 1, two strips 2 are continuously supplied from a payoff reel 1 installed on the inlet side of the annealing furnace, and the tip of the subsequent strip is welded to the end of the previous strip by a welding connection device 3. Then, after passing through the cleaning device 4, the amount of supply is adjusted by the inlet side laper 5 and then fed into the furnace for heat treatment. Then, the heating furnace 6, the soaking furnace 7, the primary cooling furnace 8, the overaging furnace 9,
The strip 2 that has been heat-treated through the secondary cooling furnace 10 according to a predetermined heat cycle is fed to the skin pass mill 12 after the delivery amount is adjusted by the delivery looper 11. After being temper-rolled by the skin pass mill 12, the inspection / conditioning device 13 divides or removes defective portions, and the processed strip 2 is wound on the tension reel 14. In each furnace, a large number of hearth rolls 15 are provided to apply appropriate tension to the strip 2 so that the strip 2 can travel continuously.

【0008】入口および出口と各炉に付き、適宜な部位
のハースロールにはロードセルがそれぞれ設けられてい
る。これら張力検出ロールR0 〜R6 によって炉毎の代
表張力を検出し、この値に基づいて炉毎に設定された適
正張力となるように、各ハースロール15の駆動トルク
がフィードバック制御される。つまりこの場合には共通
張力のセクションが炉毎に区分けされている。
A load cell is provided in each of the hearth rolls at appropriate portions for the inlet and outlet and each furnace. The representative tension for each furnace is detected by these tension detection rolls R 0 to R 6 , and the drive torque of each hearth roll 15 is feedback-controlled so that the proper tension is set for each furnace based on this value. In other words, in this case, the section of common tension is divided for each furnace.

【0009】図2は本発明に係る張力変更点での張力上
げ設定状況を示す図である。図2に示すように、異種ス
トリップの接続部の通過に合わせて、張力を順次増大さ
せた場合を想定すると、異種ストリップ同志の接続部の
炉内位置をトラッキングし、接続部が各張力検出ロール
0 〜R6 を通過するタイミングに合わせて張力の変更
制御が行われるが、従来は先行ストリップに適した実績
張力から後続ストリップに適した目標張力へと張力の変
更が一挙に行われるが各セクション毎に一挙に段階的に
行われいた。
FIG. 2 is a diagram showing a tension increase setting situation at a tension change point according to the present invention. As shown in FIG. 2, assuming that the tension is sequentially increased as the different strips pass through the joints, the positions of the joints of the different strips in the furnace are tracked, and the joints detect the tension detection rolls. The tension change control is performed according to the timing of passing through R 0 to R 6 , but conventionally, the tension is changed at once from the actual tension suitable for the preceding strip to the target tension suitable for the succeeding strip. It was done step by step for each section.

【0010】例えば、一次冷却炉8における張力検出ロ
ールR3 を接続部が通過する時点の従来の張力パターン
を見ると同部より下流側の各セクションは薄板に適した
張力のままであるが、これより上流側の各セクションの
張力はそれぞれ厚板に適した張力になっている。すなわ
ち、この時の張力パターンは異種前後の張力は全く異な
る張力で通過することになり、この場合には一次冷却炉
8と過時効炉9との間に大きな張力差が生じる。この張
力差がロールグリップ力の限界を超えると、ロールとス
トリップとの間にスリップを生じる虞れがあることか
ら、従来の張力変更方法では、その適正張力差より接続
可能な異種ストリップの制約があった。この一部改良と
して、その大きさを緩和するために、各セクションの張
力範囲内で段階的に制御しようとすつものであるが、こ
れも異種ストリップ接続点においては張力差が段階的に
生じていることから、基本的な解消には至っていない。
For example, looking at the conventional tension pattern at the time when the connecting portion passes through the tension detecting roll R 3 in the primary cooling furnace 8, each section downstream from the connecting portion remains the tension suitable for the thin plate. The tension of each section on the upstream side is suitable for the thick plate. That is, in the tension pattern at this time, the tensions before and after different types pass with completely different tensions, and in this case, a large tension difference occurs between the primary cooling furnace 8 and the overaging furnace 9. If the tension difference exceeds the limit of the roll grip force, slipping may occur between the roll and the strip. Therefore, in the conventional tension changing method, there is a restriction of different strips that can be connected due to the appropriate tension difference. there were. As a part of this improvement, in order to reduce the size, it is attempted to control in stages within the tension range of each section. Therefore, it has not been basically resolved.

【0011】そこで本発明においては、図2に示すよう
に先行材最適張力をテンションメーターに到達時には今
回の最終目標張力値の偏差の50%を傾斜階段的に変更
し、今回現在目標張力とし、次テンションメーター進行
後に次最終目標張力値へ引続いて変更するような滑らか
な傾斜階段的な変更を行って最終目標張力値に設定出力
するものである。なお、最終目標張力は対象制御ゾーン
位置、ストリップ材質及びストリップサイズから決まる
ものでその設定目標張力は次の式で表される。 設定目標張力=(今回最終目標張力−前回最終目標張
力)×(変更率+100)+前回最終目標張力 なお、変更率は変更率テーブルから検索される。
Therefore, in the present invention, as shown in FIG. 2, when the optimum tension of the preceding material reaches the tension meter, 50% of the deviation of the final target tension value of this time is changed in a stepwise manner so that it becomes the current target tension. After the next tension meter progresses, the final target tension value is set and output by making a smooth slope step change such that the next final target tension value is continuously changed. The final target tension is determined by the target control zone position, strip material, and strip size, and the set target tension is expressed by the following equation. Set target tension = (current final target tension-previous final target tension) x (change rate +100) + previous final target tension The change rate is retrieved from the change rate table.

【0012】表1は、張力を上げる場合の張力変更率テ
ーブルの一例を示しており、例えば、接続部が入口張力
検出ロールR0 を通過する時の各セクションにおける張
力変更率は、入口のそれが0.5、その他のセクション
がそれぞれ0となっている。従ってこの時は、入口部の
みが目標張力への変更代の50%だけ実績張力に上乗せ
され、その他のセクションは実績張力のまま操業される
ことになる。また、例えば一次冷却炉8の張力検出ロー
ルR3 を接続部が通過する際の各セクションにおける張
力変更率を見ると、入口・加熱炉・均熱炉の張力に対し
てそれぞれ1.0、一次冷却炉の張力に対して0.5、
その他に対しては0となっており、この時の張力パター
ンは一次冷却炉8と過時効炉9との間の張力変化の勾配
が極めて穏やかになり、ロールとストリップとの間にス
リップを生じない範囲に隣接するセクション間の張力差
を抑えることが出来る。
Table 1 shows an example of a tension change rate table when the tension is increased. For example, the tension change rate in each section when the connecting portion passes through the inlet tension detecting roll R 0 is that of the inlet. Is 0.5 and other sections are 0 respectively. Therefore, at this time, only the inlet portion is added to the actual tension by 50% of the amount of change to the target tension, and the other sections are operated with the actual tension. Also, for example, looking at the tension change rate in each section when the connecting portion passes through the tension detecting roll R 3 of the primary cooling furnace 8, the tension of the inlet, the heating furnace, and the soaking furnace are 1.0, respectively. 0.5 against the tension of the cooling furnace,
It is 0 for the others, and the tension pattern at this time is such that the gradient of the change in tension between the primary cooling furnace 8 and the overaging furnace 9 becomes extremely gentle, and slip occurs between the roll and the strip. It is possible to suppress the tension difference between the sections adjacent to the non-existing area.

【0013】[0013]

【表1】 [Table 1]

【0014】張力を下げる場合には、表2に示すテーブ
ルに従って設定張力が求められる。この場合の一次冷却
炉8の張力検出ロールR3 を接続部が通過する際の各セ
クションにおける張力変更率を見ると、入口・加熱炉・
均熱炉の張力に対してそれぞれ1.0、一次冷却炉の張
力に対して0.5、その他に対しては0となっており、
この時の張力パターンは一次冷却炉8と過時効炉9との
間の張力変化の勾配が極めて穏やかになり、この場合に
も、ロールとストリップとの間にスリップを生じない範
囲に隣接するセクション間の張力差を抑えられる。
When lowering the tension, the set tension is obtained according to the table shown in Table 2. Looking at the tension change rate in each section when the connecting portion passes through the tension detecting roll R 3 of the primary cooling furnace 8 in this case, the inlet, heating furnace,
The tension of the soaking furnace is 1.0, the tension of the primary cooling furnace is 0.5, and the others are 0.
The tension pattern at this time is such that the gradient of the tension change between the primary cooling furnace 8 and the overaging furnace 9 becomes extremely gentle, and in this case also, the section adjacent to the range in which the slip does not occur between the roll and the strip. The tension difference between them can be suppressed.

【0015】[0015]

【表2】 [Table 2]

【0016】[0016]

【実施例】以下本発明について実施例によって具体的に
説明する。図3は本発明に係る張力変更速度テーブルの
具体的一例を示す図である。図3に示すように鋼種と板
厚、板幅変化に応じた張力変更率(kg/sec)を示
したもので張力設定変更点の通過位置に対応して適宜な
値に予め設定したセクション毎の上記張力変更速度テー
ブル及び材質、サイズ毎のバックリング、蛇行及びたる
みを発生させない張力変更速度テーブルを用いて張力設
定を行うものである。
EXAMPLES The present invention will be specifically described below with reference to examples. FIG. 3 is a diagram showing a specific example of the tension change speed table according to the present invention. As shown in FIG. 3, the tension change rate (kg / sec) according to the steel type, plate thickness, and plate width change is shown, and each section is preset to an appropriate value corresponding to the passing position of the tension setting change point. The tension is set by using the tension change speed table and the tension change speed table which does not cause buckling, meandering and slack for each material and size.

【0017】例えば薄手幅広軟質材の板厚0.6mm×
板幅1560mmから0.7mm×1860mmに変更
した場合の結果を図4に示す。4は本発明に係る張力設
定変更時の張力制御結果を示す図である。図4(A)は
本発明を実施した場合であって、コイルA最終張力目標
値470kgfからコイルB最終張力目標値650kg
fに変更するために5sec毎に30kgfづつ3段階
にて高め、560kgfの張力とし、引続き最終張力目
標値である650kgfに前記同様5sec毎に30k
gfづつ3段階の変更を行って最終張力目標値650k
gfとするものである。これによって滑らかな傾斜的変
更設定が可能となる。
For example, a thin and wide soft material having a plate thickness of 0.6 mm ×
FIG. 4 shows the result when the plate width was changed from 1560 mm to 0.7 mm × 1860 mm. FIG. 4 is a diagram showing a tension control result when changing the tension setting according to the present invention. FIG. 4 (A) shows a case where the present invention is implemented, in which the coil A final tension target value 470 kgf to the coil B final tension target value 650 kgf.
In order to change to f, the pressure is increased in 3 steps by 30 kgf every 5 seconds to obtain a tension of 560 kgf, and then the final target tension value of 650 kgf is set to 30 k every 5 seconds as described above.
The final tension target value is 650k by changing the gf in 3 steps.
gf. This allows a smooth incline change setting.

【0018】図4(B)は従来の450kgfから65
0kgfに一挙に変更した結果を示している。これから
わかるように、本発明である図4(A)は張力変動が±
20kgf以内に抑えられるのに対して、従来法である
図4(B)の場合は±60kgfと大きな張力変動が見
られた。このように従来による張力変動が急峻であるの
に対して本発明では極めて穏やかな変動となり、薄手幅
広の適正張力差の大きい異種ストリップにおいてもバッ
クリング、蛇行及びたるみを生ずることなくストリップ
連続熱処理の生産効率を高めることが出来た。
FIG. 4B shows a conventional 450 kgf to 65
It shows the result of changing all at once to 0 kgf. As can be seen from this, in FIG. 4 (A) which is the present invention, the tension fluctuation is ±
While it is suppressed to within 20 kgf, a large tension fluctuation of ± 60 kgf was observed in the case of the conventional method of FIG. 4 (B). As described above, the conventional tension change is steep, whereas the present invention shows an extremely gentle change, and even in the case of a thin strip having a large appropriate difference in tension, a strip continuous heat treatment is performed without causing buckling, meandering and slack. We were able to improve production efficiency.

【0019】[0019]

【発明の効果】以上述べたように本発明によれば、適正
張力の異なるストリップの連続通板において、ストリッ
プのの蛇行、バックリングおよびたるみを発生させず
に、なお、かつ適正張力への速やかな変更が可能とな
り、張力設定変更において、張力変動を20kgf以内
に抑えることが可能となり、しかも薄手幅広材の安定通
板が可能となったことは極めて優れた効果を奏するもの
である。
As described above, according to the present invention, in the continuous threading of strips having different proper tensions, the strips do not meander, buckle and sag, and the tension is quickly adjusted to the proper tension. The change in tension can be suppressed within a range of 20 kgf when the tension is changed, and stable passage of thin wide material can be achieved, which is an extremely excellent effect.

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

【図1】本発明に適用される鋼帯の連続焼鈍設備に概略
図、
FIG. 1 is a schematic diagram of continuous annealing equipment for steel strips applied to the present invention,

【図2】本発明に係る張力変更点での張力上げ設定状況
を示す図、
FIG. 2 is a diagram showing a tension increase setting situation at a tension change point according to the present invention;

【図3】本発明に係る張力変更速度テーブルの具体的一
例を示す図、
FIG. 3 is a diagram showing a specific example of a tension change speed table according to the present invention,

【図4】本発明に係る張力設定変更時の張力制御結果を
示す図である。
FIG. 4 is a diagram showing a tension control result at the time of changing the tension setting according to the present invention.

【符号の説明】[Explanation of symbols]

1 ペイオフリール 2 ストリップ 3 溶接接続装置 4 クリーニング装置 5 入側レーパー 6 加熱炉 7 均熱炉 8 一次冷却炉 9 過時効炉 10 二次冷却炉 11 出側ルーパー 12 スキンパスミル 13 検査精整装置 14 テンションリール 15 ハースロール 1 Payoff reel 2 Strip 3 Welding connection device 4 Cleaning device 5 Inlet raper 6 Heating furnace 7 Soaking furnace 8 Primary cooling furnace 9 Overaging furnace 10 Secondary cooling furnace 11 Outer side looper 12 Skin pass mill 13 Inspection and refining device 14 Tension Reel 15 hearth roll

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 鋼帯の通板において、張力変更点の通過
位置に対応して予め設定した張力変更テーブル及び材
質、サイズ毎の張力変更速度テーブルを用いることによ
り、ロールのスリップや張力の急激な変動を防止し、鋼
帯のバックリング、蛇行及びたるみを発生させずに張力
変更を行うことを特徴とする鋼帯の連続熱処理設備の張
力変更方法。
1. In a steel strip threading, by using a tension change table and a tension change speed table for each material and size preset corresponding to the passing position of the tension change point, the slip of the roll and the sudden tension A method for changing the tension of continuous heat treatment equipment for steel strips, characterized in that the tension is changed without causing buckling, meandering, and slack of the steel strips while preventing such fluctuations.
JP548493A 1993-01-18 1993-01-18 Method for changing tension of continuous heat treatment equipment of strip Pending JPH06212286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP548493A JPH06212286A (en) 1993-01-18 1993-01-18 Method for changing tension of continuous heat treatment equipment of strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP548493A JPH06212286A (en) 1993-01-18 1993-01-18 Method for changing tension of continuous heat treatment equipment of strip

Publications (1)

Publication Number Publication Date
JPH06212286A true JPH06212286A (en) 1994-08-02

Family

ID=11612525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP548493A Pending JPH06212286A (en) 1993-01-18 1993-01-18 Method for changing tension of continuous heat treatment equipment of strip

Country Status (1)

Country Link
JP (1) JPH06212286A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141529A (en) * 1979-04-20 1980-11-05 Toshiba Corp Tension setting and controlling device of continuous long material
JPH04285131A (en) * 1991-03-12 1992-10-09 Nippon Steel Corp Method for changing tension in strip continuous heat treatment equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141529A (en) * 1979-04-20 1980-11-05 Toshiba Corp Tension setting and controlling device of continuous long material
JPH04285131A (en) * 1991-03-12 1992-10-09 Nippon Steel Corp Method for changing tension in strip continuous heat treatment equipment

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