JP2002266034A - Apparatus for controlling sandwich compression of seal roll in strip continuous treating furnace - Google Patents

Apparatus for controlling sandwich compression of seal roll in strip continuous treating furnace

Info

Publication number
JP2002266034A
JP2002266034A JP2001064739A JP2001064739A JP2002266034A JP 2002266034 A JP2002266034 A JP 2002266034A JP 2001064739 A JP2001064739 A JP 2001064739A JP 2001064739 A JP2001064739 A JP 2001064739A JP 2002266034 A JP2002266034 A JP 2002266034A
Authority
JP
Japan
Prior art keywords
furnace
tension
metal strip
pressure
roll
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
Application number
JP2001064739A
Other languages
Japanese (ja)
Other versions
JP4635355B2 (en
Inventor
Hiroshi Tawara
博 俵
Toshikazu Ando
俊和 安藤
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP2001064739A priority Critical patent/JP4635355B2/en
Publication of JP2002266034A publication Critical patent/JP2002266034A/en
Application granted granted Critical
Publication of JP4635355B2 publication Critical patent/JP4635355B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for controlling the sandwich compression of seal rolls in a strip continuous treating furnace which is capable of properly giving a tension to a metal strip of a low tensile material. SOLUTION: Seal rolls 2A and 2B for preventing the entering of outside air into the furnace by sandwiching the metal strip ST to compress from the front side and the back side and capable of changing the sandwich compression are provide in the inlet of the furnace 1. The metal strip ST is fed to the furnace continuously by feed rolls 3A and 3B and drawn out continuously from the furnace by drawing rolls 5A and 5B. A tension controller 61 controls the rotation of the feed rolls 3A and 3B to properly keep the tension of the metal strip ST passed through the furnace. A load cell roll 41 for detecting the tension of the metal strip ST is provided between the feed rolls 3A, 3B and the seal rolls 2A, 2B, and when the tension detected thereby reaches a lower limit value, the sandwich compression of the seal rolls 2A and 2B is made lower by a sandwich compression controller 62.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は連続的に供給される
金属ストリップに対して光輝焼鈍等の処理を行うストリ
ップ連続処理炉において、上記金属ストリップを表裏か
ら挟圧して、炉内雰囲気を外気からシールするシールロ
ールの、挟圧力を適正に制御する挟圧力制御装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous strip processing furnace for performing a process such as bright annealing on a continuously supplied metal strip. The present invention relates to a squeezing pressure control device for appropriately controlling a squeezing pressure of a seal roll to be sealed.

【0002】[0002]

【従来の技術】ストリップ連続処理炉においては、金属
ロールの外周を一定厚のゴム層で被覆した1対のシール
ロールを炉の入口や出口に設けて、これらシールロール
で金属ストリップの表裏を挟持することにより、連続的
に炉内を通過する金属ストリップ周囲の気密性を炉入口
と炉出口で保って、還元性雰囲気の炉内を外気と遮断す
るようにしている。
2. Description of the Related Art In a continuous strip processing furnace, a pair of seal rolls in which the outer circumference of a metal roll is covered with a rubber layer having a constant thickness are provided at the inlet and outlet of the furnace, and these seal rolls sandwich the front and back of the metal strip. By doing so, the airtightness around the metal strip continuously passing through the furnace is maintained at the furnace inlet and the furnace outlet, so that the inside of the furnace in a reducing atmosphere is shut off from the outside air.

【0003】このようなストリップ連続処理炉で、炉内
を通過する金属ストリップに適度な張力を付与するため
に、金属ストリップを引き出す一定回転の引き出しロー
ルを炉の出口側に設けるとともに、炉の入口側には金属
ストリップの張力が所定値になるように回転制御される
送り込みロールを設けたものがある。
[0003] In such a continuous strip processing furnace, in order to apply an appropriate tension to the metal strip passing through the furnace, a constant-rotation drawer roll for drawing the metal strip is provided on the outlet side of the furnace, and the furnace inlet port is provided. On the side, there is one provided with a feed roll whose rotation is controlled so that the tension of the metal strip becomes a predetermined value.

【0004】[0004]

【発明が解決しようとする課題】上記従来のストリップ
連続処理炉において、炉内雰囲気を効果的に外気と遮断
するためにシールロールの挟圧力は可及的に大きくされ
るが、低張力材よりなる金属ストリップを処理する場合
にその張力を小さくしようとして送り込みロールの回転
数を引き出しロールの回転数に近づけても、金属ストリ
ップを挟圧するシールロール部での機械的摩擦力が大き
いために炉内の金属ストリップの張力を必要値まで低下
させることができないという問題があった。
In the conventional strip continuous processing furnace described above, the clamping pressure of the seal roll is increased as much as possible in order to effectively shut off the atmosphere in the furnace from the outside air. Even if the rotation speed of the feed roll is approached to the rotation speed of the pull-out roll in order to reduce the tension when processing the metal strip that However, there is a problem that the tension of the metal strip cannot be reduced to a required value.

【0005】そこで、本発明はこのような課題を解決す
るもので、低張力材の金属ストリップに対してその張力
を適正に付与することができるストリップ連続処理炉の
シールロールの挟圧力制御装置を提供することを目的と
する。
In view of the above, the present invention has been made to solve the above-mentioned problem, and has a sealing roll clamping pressure control device for a strip continuous processing furnace capable of appropriately applying a tension to a metal strip of a low-tensile material. The purpose is to provide.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に、本第1発明では、少なくとも炉(1)の入口に設け
られ、金属ストリップ(ST)をその表裏から挟圧して
炉内の気密性を維持する、挟圧力変更可能なシールロー
ル(2A,2B)と、炉(1)の入口側に設けられて金
属ストリップ(ST)を連続的に炉内に送り込む送り込
みロール(3A,3B)と、炉(1)の出口側に設けら
れて金属ストリップ(ST)を炉内から連続的に引き出
す定回転の引き出しロール(5A,5B)と、送り込み
ロール(3A,3B)の回転を制御して、炉内を通過す
る金属ストリップ(ST)の張力を適正に維持する張力
制御手段(61)と、送り込みロール(3A,3B)と
シールロール(2A,2B)との間で金属ストリップ
(ST)の張力を検出する張力検出手段(41)と、張
力検出手段(41)で検出される張力が下限値に至った
時にシールロール(2A,2B)の挟圧力を低下させる
挟圧力制御手段(62)とを具備している。
In order to achieve the above object, according to the first aspect of the present invention, at least an inlet of a furnace (1) is provided, and a metal strip (ST) is squeezed from the front and back thereof to seal the inside of the furnace. Rolls (2A, 2B) capable of changing the sandwiching pressure, which maintain the performance, and feed rolls (3A, 3B) provided on the inlet side of the furnace (1) and continuously feeding the metal strip (ST) into the furnace. And the rotation of a constant-rotation drawer roll (5A, 5B) provided on the outlet side of the furnace (1) and continuously drawing the metal strip (ST) from the furnace, and a feed roll (3A, 3B). Thus, the tension control means (61) for properly maintaining the tension of the metal strip (ST) passing through the furnace, and the metal strip (ST) between the feed rolls (3A, 3B) and the seal rolls (2A, 2B). Check the tension of Tension detecting means (41), and clamping force control means (62) for reducing the clamping pressure of the seal rolls (2A, 2B) when the tension detected by the tension detecting means (41) reaches a lower limit. are doing.

【0007】本第1発明において、シールロール部にお
ける機械的摩擦力が大きいと、低張力材の金属ストリッ
プを処理すべく張力制御手段の設定張力を小さくして
も、引き出しロールにより引き出される金属ストリップ
の実際の張力は小さくならず、上記張力制御手段は金属
ストリップの張力を小さくするように無制御的に送り込
みロールの回転数を上げる。この結果、送り込みロール
とシールロールとの間で金属ストリップの張力が過度に
低下して下限値に至る。下限値に至ったことが張力検出
手段で検出されると、挟圧力制御手段によってシールロ
ールの挟圧力が低下させられて、シールロール部におけ
る機械的摩擦力が減少させられる。この結果、張力制御
手段による制御が回復して、金属ストリップの張力は上
記小さな設定張力に維持されるようになる。
In the first aspect of the present invention, if the mechanical frictional force in the seal roll portion is large, even if the tension set by the tension control means is reduced to process the metal strip made of a low-tensile material, the metal strip pulled out by the pull-out roll Does not decrease, and the tension control means uncontrollably increases the rotation speed of the feeding roll so as to reduce the tension of the metal strip. As a result, the tension of the metal strip between the feeding roll and the seal roll is excessively reduced to reach the lower limit. When the tension detection unit detects that the lower limit has been reached, the clamping pressure of the seal roll is reduced by the clamping pressure control unit, and the mechanical frictional force at the seal roll portion is reduced. As a result, the control by the tension control means is restored, and the tension of the metal strip is maintained at the small set tension.

【0008】本第2発明では本第1発明の構成に加えて
さらに、炉圧を検出する圧力検出手段(64)と、炉圧
が低下した時に当該炉圧を回復させるように雰囲気ガス
を炉内へ供給する雰囲気ガス供給手段(66,67,6
8)を備えている。
In the second invention, in addition to the constitution of the first invention, a pressure detecting means (64) for detecting the furnace pressure and an atmosphere gas for recovering the furnace pressure when the furnace pressure is reduced are restored. Atmospheric gas supply means (66, 67, 6)
8).

【0009】本第2発明において、低張力材の金属スト
リップを処理するためにシールロールの挟圧力が低下さ
せられると、炉内雰囲気ガスの洩れ量が増大して炉圧が
低下する。この炉圧低下が炉圧検出手段によって検出さ
れると、雰囲気ガス供給手段によって炉圧を回復させる
ように雰囲気ガスが炉内へ供給されて、炉圧の過度の低
下が避けられる。
In the second aspect of the present invention, when the clamping pressure of the seal roll is reduced in order to process a metal strip of a low-tensile material, the amount of leakage of the atmosphere gas in the furnace increases, and the furnace pressure decreases. When this furnace pressure drop is detected by the furnace pressure detecting means, an atmosphere gas is supplied into the furnace so as to restore the furnace pressure by the atmosphere gas supply means, so that an excessive decrease in the furnace pressure is avoided.

【0010】なお、上記カッコ内の符号は、後述する実
施形態に記載の具体的手段との対応関係を示すものであ
る。
[0010] The reference numerals in parentheses indicate the correspondence with specific means described in the embodiment described later.

【0011】[0011]

【発明の実施の形態】図1には本発明の挟圧力制御装置
を備えたストリップ連続処理炉の構成を示す。図1に示
すストリップ連続処理炉1は縦型のもので、架台13に
より支持されて上下方向へ延びる炉本体11の上端には
前室12が気密的に連結され、前室12の上部に炉入口
14が設けられて、ここに一対のシールロール2A,2
Bが配設されている。金属ストリップSTはこれらシー
ルロール2A,2Bによって表裏から挟圧された状態で
前室12を経て炉本体11内に進入し、炉本体11の中
央を通過して、炉本体11の下端に位置する炉出口15
から気密的に水槽16内に取り出されている。上記シー
ルロールの一方2Bは駆動シリンダ21によって他のシ
ールロール2Aに対して移動させられて、両シールロー
ル2A,2Bによる金属ストリップSTの挟圧力が変更
できるようになっている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of a continuous strip processing furnace equipped with a clamping force control device according to the present invention. The continuous strip processing furnace 1 shown in FIG. 1 is of a vertical type. An inlet 14 is provided, in which a pair of seal rolls 2A, 2A is provided.
B is provided. The metal strip ST enters the furnace main body 11 through the front chamber 12 while being pressed from the front and back by the seal rolls 2A and 2B, passes through the center of the furnace main body 11, and is located at the lower end of the furnace main body 11. Furnace outlet 15
From the water tank 16 in an airtight manner. One of the seal rolls 2B is moved by the drive cylinder 21 with respect to the other seal roll 2A, so that the clamping pressure of the metal strip ST between the two seal rolls 2A and 2B can be changed.

【0012】金属ストリップSTは、モータ31で駆動
される送り込みロール3A,3Bに懸架され、途中で張
力検出用のロードセルロール41を経て上記シールロー
ル2A,2Bに至っている。また、水槽16から引き出
された金属ストリップSTは途中、張力検出用のロード
セルロール42、および方向転換ロール43を経て、モ
ータ51で定回転駆動される引き出しロール5A,5B
に懸架されている。
The metal strip ST is suspended by feeding rolls 3A, 3B driven by a motor 31, and reaches the seal rolls 2A, 2B via a load cell roll 41 for detecting tension on the way. The metal strip ST pulled out from the water tank 16 passes through a load cell roll 42 for tension detection and a direction change roll 43 on the way, and the drawer rolls 5A and 5B driven to rotate at a constant speed by a motor 51.
Is suspended.

【0013】張力調節計61が設けられて、これにロー
ドセルロール42からの張力信号42aが入力してい
る。張力調節計61は上記張力信号42aが設定値と等
しくなるようにモータ31によって送り込みロール3
A,3Bの回転を制御する。すなわち、連続処理炉1内
を通過する金属ストリップSTの張力を大きくする場合
には送り込みロール3A,3Bの回転数を低下させて引
き出しロール5A,5Bとの回転数差を大きくし、金属
ストリップSTの張力を小さくする場合には送り込みロ
ール3A,3Bの回転数を上昇させて引き出しロール5
A,5Bの回転数に近づける。
A tension controller 61 is provided, and receives a tension signal 42a from the load cell roll 42. The tension controller 61 feeds the roll 3 by the motor 31 so that the tension signal 42a becomes equal to the set value.
Control the rotation of A and 3B. That is, when the tension of the metal strip ST passing through the continuous processing furnace 1 is increased, the rotation speed of the feed rolls 3A and 3B is reduced to increase the rotation speed difference between the draw rolls 5A and 5B, thereby increasing the metal strip ST. When the tension of the feed rolls 3A and 3B is increased,
A, approaching the rotation speed of 5B.

【0014】挟圧力調節計62が設けられて、これにロ
ードセルロール41からの張力信号41aが入力してい
る。挟圧力調節計62の出力は電空ポジショナ63に入
力しており、上記調節計62は張力信号41aが下限値
Lmに至ると、電空ポジショナ63を介して駆動シリン
ダ21によって一方のシールロール2Bを他方のシール
ロール2Aから離間する方向へ移動させて、金属ストリ
ップSTに対する挟圧力を低減させる。
A clamping pressure controller 62 is provided, to which a tension signal 41a from the load cell roll 41 is input. The output of the clamping pressure controller 62 is input to the electropneumatic positioner 63. When the tension signal 41a reaches the lower limit Lm, the controller 62 controls the one seal roll 2B by the drive cylinder 21 via the electropneumatic positioner 63. Is moved in a direction away from the other seal roll 2A to reduce the clamping force on the metal strip ST.

【0015】連続処理炉1には炉圧を検出する圧力検出
器64が設けられて、その圧力信号64aがそれぞれ圧
力調節計65,66に入力している。圧力信号64aが
圧力調節計65の設定値よりも上昇すると、圧力調節計
65は電空ポジショナ63を介して駆動シリンダ21に
よって一方のシールロール2Bを他方のシールロール2
Aから離間する方向へ移動させて、金属ストリップST
に対する挟圧力を低減させ、炉内雰囲気ガスの洩れ量を
多くして炉圧を低下させる。
The continuous processing furnace 1 is provided with a pressure detector 64 for detecting furnace pressure, and its pressure signal 64a is input to pressure controllers 65 and 66, respectively. When the pressure signal 64 a rises above the set value of the pressure controller 65, the pressure controller 65 causes the drive cylinder 21 to drive the one seal roll 2 B through the electropneumatic positioner 63 to the other seal roll 2.
A in the direction away from the metal strip ST
To reduce the furnace pressure by increasing the amount of leakage of atmospheric gas in the furnace.

【0016】圧力調節計66には流量調節計67,68
がカスケード接続されており、各流量調節計67,68
はそれぞれ流量調節弁71,72の開度を設定値に保つ
ように制御する。流量調節弁71,72はそれぞれ炉本
体11に接続された炉内雰囲気ガスとしてのH2ガスと
N2ガスの各供給路17,18中に設けられており、圧
力調節計66は圧力検出器64からの圧力信号64aが
設定値よりも低下すると、流量調節計67,68の設定
値を、これらの比を一定に保った状態で上昇させ、これ
に伴って、連続処理炉1へのH2ガスとN2ガスの供給量
が、炉内のガス組成を変動させないように、一定比を保
った状態で増大させられる。
The pressure controllers 66 include flow controllers 67 and 68.
Are connected in cascade, and each flow controller 67, 68
Controls the opening degree of each of the flow control valves 71 and 72 to a set value. The flow rate control valves 71 and 72 are provided in supply paths 17 and 18 of H2 gas and N2 gas as furnace atmosphere gases connected to the furnace body 11, respectively. When the pressure signal 64a falls below the set value, the set values of the flow controllers 67 and 68 are increased while keeping their ratio constant, and the H2 gas to the continuous processing furnace 1 The supply amount of N2 gas is increased while maintaining a constant ratio so as not to change the gas composition in the furnace.

【0017】このような装置構成において、通常材の金
属ストリップSTを処理する場合には、張力調節計61
の設定値はシールロール2A,2B部における機械的摩
擦力に比して十分大きく設定され、送り込みロール3
A,3Bの回転数が適正に制御されて金属ストリップS
Tの張力は送り込みロール3A,3Bから引き出しロー
ル5A,5Bに至るまで全ての個所で所定値に維持され
る。この場合のロードセルロール41の張力信号41a
は図2(1)の左半部に示すように大きな値となり、シ
ールロール2A,2Bの挟圧力も挟圧力調節計62によ
って図2(2)の左半部に示すように大きく維持され
る。また、この時の炉圧は、圧力調節計66にカスケー
ド接続された流量調節計67,68によってH2,N2の
各ガス流量が適当な量に調節されていることにより(図
2(4)の左半部)設定値に維持されている(図2
(3)左半部)。
In such an apparatus configuration, when processing a metal strip ST of a normal material, the tension controller 61 is used.
Is set sufficiently large as compared with the mechanical frictional force at the seal rolls 2A and 2B.
The rotation speeds of the metal strips S and A are properly controlled.
The tension of T is maintained at a predetermined value at all points from the feed rolls 3A and 3B to the draw rolls 5A and 5B. The tension signal 41a of the load cell roll 41 in this case
2 (1) becomes a large value as shown in the left half of FIG. 2 (1). . The furnace pressure at this time is adjusted by controlling the gas flow rates of H2 and N2 to appropriate amounts by the flow controllers 67 and 68 cascade-connected to the pressure controller 66 (FIG. 2 (4)). (Left half) is maintained at the set value (FIG. 2)
(3) Left half).

【0018】低張力材の金属ストリップSTを処理する
場合には、張力調節計61の設定値は小さな値に変更さ
れるが、この値がシールロール2A,2B部における機
械的摩擦力よりも小さいと、定回転の引き出しロール5
A,5Bで引き出されている金属ストリップSTの、ロ
ードセルロール42で検出される張力は張力調節計61
の設定値よりも大きくなる。この結果、金属ストリップ
STの張力を小さくするように送り込みロール3A,3
Bの回転数が無制御的に増大させられ、送り込みロール
3A,3Bとシールロール2A,2Bとの間で金属スト
リップSTの張力が過度に低下して、ロードセルロール
41の張力信号41aが図2(1)の中央部に示すよう
にその下限値Lmに至る。
When processing the metal strip ST of a low-tensile material, the set value of the tension controller 61 is changed to a small value, but this value is smaller than the mechanical frictional force at the seal rolls 2A and 2B. And a constant rotation drawer roll 5
The tension detected by the load cell roll 42 of the metal strip ST pulled out at A, 5B is a tension controller 61.
Becomes larger than the set value. As a result, the feeding rolls 3A, 3A are set so that the tension of the metal strip ST is reduced.
The rotation speed of B is uncontrollably increased, and the tension of the metal strip ST between the feeding rolls 3A, 3B and the seal rolls 2A, 2B excessively decreases. As shown in the center of (1), the lower limit value Lm is reached.

【0019】そこで、挟圧力調節計62は既述のように
駆動シリンダ21によって一方のシールロール2Bを他
方のシールロール2Aから離間する方向へ移動させて、
金属ストリップSTに対する挟圧力を低減させる(図2
(2)の中央部)。この結果、シールロール2A,2B
部における機械的摩擦力が金属ストリップSTの設定張
力値よりも十分小さくなり、ロードセルロール42の張
力信号42aが低下して送り込みロール3A,3Bの回
転数が下げられる。これにより、送り込みロール3A,
3Bから引き出しロール5A,5Bに至るまでの、金属
ストリップSTの全ての個所でその張力が、ロードセル
ロール41の張力信号41a(図2(1)の右半部)で
示されるように、張力調節計61で先に設定された新た
な小さな設定値に回復して、以後この値が維持される
(図2(1)の右半部)。
Therefore, the clamping pressure controller 62 moves the one seal roll 2B in the direction away from the other seal roll 2A by the drive cylinder 21 as described above.
The clamping pressure on the metal strip ST is reduced (FIG. 2)
(Central part of (2)). As a result, the seal rolls 2A, 2B
The mechanical frictional force in the section becomes sufficiently smaller than the set tension value of the metal strip ST, the tension signal 42a of the load cell roll 42 decreases, and the rotation speed of the feeding rolls 3A, 3B is reduced. Thereby, the feeding rolls 3A,
As shown by the tension signal 41a of the load cell roll 41 (right half of FIG. 2A), the tension is adjusted at all points of the metal strip ST from 3B to the pull-out rolls 5A and 5B. The new small set value previously set is recovered by the total 61, and this value is maintained thereafter (the right half of FIG. 2A).

【0020】ところで、シールロール2A,2Bの挟圧
力を低下させたことにより、炉内雰囲気ガスの洩れ量が
増大する結果、図2(3)の中央部に示すように炉圧が
設定値よりも低下する。そこで、炉圧が設定値を維持す
るように、圧力調節計66とこれにカスケード接続され
た流量調節計67,68によってH2,N2の雰囲気ガス
の供給量が増大させられて(図2(4)の右半部)、炉
圧が設定値へ回復させられる。
By reducing the sandwiching pressure between the seal rolls 2A and 2B, the amount of leakage of the atmosphere gas in the furnace increases. As a result, the furnace pressure becomes lower than the set value as shown in the center of FIG. Also decrease. Therefore, the supply amount of the atmosphere gas of H2 and N2 is increased by the pressure controller 66 and the flow controllers 67 and 68 cascade-connected thereto so that the furnace pressure maintains the set value (FIG. 2 (4) )), The furnace pressure is restored to the set value.

【0021】また、操業中に何らかの原因で炉圧が上昇
すると(図3(3)の左半部)圧力調節計65によって
既述のようにシールロール2A,2Bの挟圧力が低下さ
せられて(図3(2)左半部)炉内雰囲気ガスの漏れ量
が増大させられ、炉圧が設定値へ低下させられる。反対
に、操業中に何らかの原因で炉圧が下降すると(図3
(3)の右半部)圧力調節計66によって流量調節計6
7,68を介して既述のように雰囲気ガスの供給量が増
大させられて(図3(4)の右半部)、炉圧が設定値へ
回復させられる。
Further, if the furnace pressure rises for some reason during operation (left half of FIG. 3C), the clamping pressure of the seal rolls 2A and 2B is reduced by the pressure controller 65 as described above. (FIG. 3 (2) left half) The amount of leakage of the atmosphere gas in the furnace is increased, and the furnace pressure is reduced to a set value. Conversely, if the furnace pressure drops for some reason during operation (Fig. 3
(Right half of (3)) Flow controller 6 by pressure controller 66
As described above, the supply amount of the atmospheric gas is increased through the portions 7 and 68 (the right half of FIG. 3D), and the furnace pressure is restored to the set value.

【0022】なお、横型の連続処理炉では、炉出口側に
もシールロールが設けられることが多いが、この場合に
は、炉出口側のシールロールの挟圧力を、炉入口側のシ
ールロールの挟圧力と同様に制御する。
In a horizontal continuous processing furnace, a seal roll is often provided also on the furnace outlet side. In this case, the clamping pressure of the seal roll on the furnace outlet side is reduced by the sealing pressure of the seal roll on the furnace inlet side. Control is performed in the same manner as the clamping pressure.

【0023】[0023]

【発明の効果】以上のように、本発明によるストリップ
連続処理炉のシールロールの挟圧力制御装置によれば、
低張力材の金属ストリップに対してその張力を適正に付
与することができる。
As described above, according to the pinching pressure control device for the seal roll of the continuous strip processing furnace according to the present invention,
The tension can be appropriately applied to the metal strip of the low-tensile material.

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

【図1】本発明の一実施例における、シールロールの挟
圧力制御装置を備えるストリップ連続処理炉の構成を示
す図である。
FIG. 1 is a diagram showing a configuration of a continuous strip processing furnace including a sealing roll clamping force control device according to an embodiment of the present invention.

【図2】各種物理量の経時変化を示す図である。FIG. 2 is a diagram showing changes over time of various physical quantities.

【図3】各種物理量の経時変化を示す図である。FIG. 3 is a diagram showing changes over time of various physical quantities.

【符号の説明】[Explanation of symbols]

1…ストリップ連続処理炉、2A,2B…シールロー
ル、3A、3B…送り込みロール、41…ロードセルロ
ール、5A,5B…引き出しロール、61…張力調節
計、62…挟圧力調節計、64…圧力検出器、66…圧
力調節計、67,68…流量調節計、ST…金属ストリ
ップ。
DESCRIPTION OF SYMBOLS 1 ... Strip continuous processing furnace, 2A, 2B ... Seal roll, 3A, 3B ... Feeding roll, 41 ... Load cell roll, 5A, 5B ... Pulling roll, 61 ... Tension regulator, 62 ... Nipping pressure regulator, 64 ... Pressure detection , 66 ... pressure controller, 67, 68 ... flow controller, ST ... metal strip.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも炉の入口に設けられ、金属ス
トリップをその表裏から挟圧して炉内の気密性を維持す
る、挟圧力変更可能なシールロールと、前記炉の入口側
に設けられて前記金属ストリップを連続的に炉内に送り
込む送り込みロールと、前記炉の出口側に設けられて前
記金属ストリップを炉内から連続的に引き出す定回転の
引き出しロールと、前記送り込みロールの回転を制御し
て、炉内を通過する金属ストリップの張力を適正に維持
する張力制御手段と、前記送り込みロールと前記シール
ロールとの間で前記金属ストリップの張力を検出する張
力検出手段と、張力検出手段で検出される張力が下限値
に至った時に前記シールロールの挟圧力を低下させる挟
圧力制御手段とを具備するストリップ連続処理炉のシー
ルロールの挟圧力制御装置。
1. A seal roll which is provided at least at an inlet of a furnace and which can change a squeezing pressure for squeezing a metal strip from the front and back thereof to maintain airtightness in the furnace, and a seal roll provided at an inlet side of the furnace. A feed roll that continuously feeds the metal strip into the furnace, a constant-roll drawer roll that is provided on the outlet side of the furnace and continuously pulls out the metal strip from the furnace, and controls the rotation of the feed roll. Tension control means for appropriately maintaining the tension of the metal strip passing through the furnace; tension detection means for detecting the tension of the metal strip between the feeding roll and the seal roll; Pressure control means for lowering the pressure of the seal roll when the tension reaches a lower limit value. Control device.
【請求項2】 炉圧を検出する圧力検出手段と、炉圧が
低下した時に当該炉圧を回復させるように雰囲気ガスを
炉内へ供給する雰囲気ガス供給手段をさらに備えた請求
項1に記載のストリップ連続処理炉のシールロールの挟
圧力制御装置。
2. The apparatus according to claim 1, further comprising pressure detecting means for detecting the furnace pressure, and atmosphere gas supplying means for supplying an atmosphere gas into the furnace so as to recover the furnace pressure when the furnace pressure is reduced. Pressure control device for seal roll of continuous strip processing furnace.
JP2001064739A 2001-03-08 2001-03-08 Nipping pressure control device for seal roll of continuous strip processing furnace Expired - Fee Related JP4635355B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001064739A JP4635355B2 (en) 2001-03-08 2001-03-08 Nipping pressure control device for seal roll of continuous strip processing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001064739A JP4635355B2 (en) 2001-03-08 2001-03-08 Nipping pressure control device for seal roll of continuous strip processing furnace

Publications (2)

Publication Number Publication Date
JP2002266034A true JP2002266034A (en) 2002-09-18
JP4635355B2 JP4635355B2 (en) 2011-02-23

Family

ID=18923517

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP4635355B2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57198220A (en) * 1981-05-28 1982-12-04 Nippon Steel Corp Seal roll apparatus
JPH03253519A (en) * 1990-03-05 1991-11-12 Nisshin Steel Co Ltd Bright annealing method of stainless steel strip and elastic revolving roll used in this method
JPH07316666A (en) * 1994-05-26 1995-12-05 Daido Steel Co Ltd Furnace tension control device
JPH11279661A (en) * 1998-03-26 1999-10-12 Kawasaki Steel Corp Method for controlling tension in vertical type heat treating furnace and device thereof
JP2001098332A (en) * 1999-09-29 2001-04-10 Chugai Ro Co Ltd Roll sealing device for continuous heat treatment furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57198220A (en) * 1981-05-28 1982-12-04 Nippon Steel Corp Seal roll apparatus
JPH03253519A (en) * 1990-03-05 1991-11-12 Nisshin Steel Co Ltd Bright annealing method of stainless steel strip and elastic revolving roll used in this method
JPH07316666A (en) * 1994-05-26 1995-12-05 Daido Steel Co Ltd Furnace tension control device
JPH11279661A (en) * 1998-03-26 1999-10-12 Kawasaki Steel Corp Method for controlling tension in vertical type heat treating furnace and device thereof
JP2001098332A (en) * 1999-09-29 2001-04-10 Chugai Ro Co Ltd Roll sealing device for continuous heat treatment furnace

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