JPH0253517B2 - - Google Patents
Info
- Publication number
- JPH0253517B2 JPH0253517B2 JP60266376A JP26637685A JPH0253517B2 JP H0253517 B2 JPH0253517 B2 JP H0253517B2 JP 60266376 A JP60266376 A JP 60266376A JP 26637685 A JP26637685 A JP 26637685A JP H0253517 B2 JPH0253517 B2 JP H0253517B2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- tank
- surface treatment
- roll
- catenary
- 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.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 80
- 239000010959 steel Substances 0.000 claims description 80
- 238000007654 immersion Methods 0.000 claims description 24
- 238000004381 surface treatment Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、特に帯鋼の酸洗槽などの連続浸漬
式処理槽において、帯鋼の浸漬深さを安定した状
態に維持して運転できるようにした連続式浸漬型
表面処理装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is capable of operating a continuous immersion treatment tank such as a steel strip pickling tank while maintaining a stable immersion depth of the steel strip. The present invention relates to a continuous immersion type surface treatment apparatus.
従来の浸漬型帯鋼表面処理槽は、槽内に貯溜さ
れた処理液の温度や濃度を帯鋼の浸漬時間に応じ
て最適な条件に調整するために、槽内に複数のダ
ムスキツドを設けて仕切られている。帯鋼は、こ
の仕切られて画成された帯鋼の供給方向に沿つて
第１番目の第１槽の入口に固定して設けられ、且
つ昇降機能を有しないデフレクタロール又はリン
ガロールと前記ダムスキツドとの間で懸下して処
理液の中へ浸漬され、第２槽以後は次のダムスキ
ツドとその次のダムスキツドとの間で同様に浸漬
され、最後は、最終槽の出口に固設され且つ昇降
機能を有しないデフレクタロール又はリンガロー
ルに引上げられることによつて、上記各槽内に懸
下した帯鋼のカテナリが連続して形成されるよう
になつている。
Conventional immersion type steel strip surface treatment tanks are equipped with multiple dam skids in order to adjust the temperature and concentration of the treatment liquid stored in the tank to optimal conditions depending on the immersion time of the steel strip. It's partitioned off. The steel strip is fixedly provided at the entrance of the first tank along the partitioned and defined supply direction of the steel strip, and includes a deflector roll or ringer roll that does not have a lifting function and the dam skid. After the second tank, it is immersed in the same way between the next dam skid and the next dam skid, and finally, it is fixedly installed at the outlet of the final tank. By being pulled up by deflector rolls or ringer rolls that do not have a lifting function, a catenary of the steel strip suspended in each tank is continuously formed.
また、通常、処理槽の深さは、帯鋼の基準運転
張力より求められるカテナリ量と、帯鋼の所要浸
漬深さからきめられるが、さらに帯鋼が運転中に
槽の底面と接触することがないように余裕を加味
した深さとし、また前記ダムスキツドで分割され
た各槽の深さと長ささは同一となつている。 In addition, the depth of the treatment tank is usually determined based on the amount of catenary required from the standard operating tension of the steel strip and the required immersion depth of the steel strip. The depth and length of each tank divided by the dam scale are the same.
ここで、槽内に懸下する帯鋼のカテナリ量δ
は、公知のごとく、帯鋼の張力をＴ、帯鋼の処理
液中における自重をｗ、槽の長さをｌとすると、
δ＝wl3／8Tで示され、帯鋼のカテナリ量は張力
と反比例する関係となつている。 Here, the catenary amount δ of the steel strip suspended in the tank
As is well known, if the tension of the steel strip is T, the weight of the steel strip in the treatment solution is w, and the length of the tank is l, then
It is expressed as δ=wl 3 /8T, and the catenary amount of the steel strip is inversely proportional to the tension.
しかしながら、近年のように、表面処理設備の
運転速度が高速化してくると、帯鋼が槽内を通過
（通板）するときに受ける処理液の抵抗力による
帯鋼の張力変化によつて、カテナリ量が変動し、
安定した運転が阻害されるようになつてきた。特
に第１槽及び最終槽においては、帯鋼のカテナリ
量の減少による上昇（浮上り）に伴つて帯鋼の浸
漬長さが減少し、従つて帯鋼と処理液との反応時
間が減少して表面処理効果の低下が見られるよう
になつた。
However, as the operating speed of surface treatment equipment increases in recent years, changes in the tension of the steel strip due to the resistance force of the treatment liquid that the steel strip receives as it passes through the tank (threading) The amount of catenary fluctuates,
Stable driving has become obstructed. Particularly in the first tank and the final tank, the immersion length of the steel strip decreases as the steel strip rises (floating) due to a decrease in the amount of catenary, and therefore the reaction time between the steel strip and the treatment solution decreases. As a result, a decrease in the surface treatment effect was observed.
また、槽の底部には、帯鋼カテナリの最低点と
槽の底部との距離を検出して、帯鋼のカテナリ量
が常に所定値に維持されるよう制御を行うための
磁気検出器が設けられているが、帯鋼の上昇があ
る程度を超えるとこの磁気検出器の検出範囲から
外れ、カテナリ制御ができなくなつて安定した表
面処理装置の運転が困難となるという問題点が生
じてきた。 In addition, a magnetic detector is installed at the bottom of the tank to detect the distance between the lowest point of the steel strip catenary and the bottom of the tank, and to control the catenary amount of the steel strip to always be maintained at a predetermined value. However, a problem has arisen in that when the rise of the steel strip exceeds a certain level, it goes out of the detection range of this magnetic detector, making catenary control impossible and making stable operation of the surface treatment apparatus difficult.
この発明は、このような従来の問題点に着目し
てなされたもので、従来の問題点を解決するとと
もに運転条件の適用範囲が広い表面処理装置を提
供することを目的としている。 The present invention has been made in view of these conventional problems, and aims to provide a surface treatment apparatus that solves the conventional problems and can be applied to a wide range of operating conditions.
〔問題点を解決するための手段〕
表面処理槽の入口及び出口のデフレクタロール
又はリンガロールを昇降させて高さを変更する昇
降装置とこの昇降装置を駆動する制御装置を備え
て、帯鋼の材料仕様及び運転条件の変更に応じて
昇降装置を駆動して前記ロールの高さを初期設定
し、また帯鋼の浸漬深さが制御範囲外となつたと
きに昇降装置を駆動して制御範囲に収めるように
した連続式浸漬型表面処理装置としたものであ
る。[Means for solving the problem] A lifting device that lifts and lowers deflector rolls or ringer rolls at the entrance and exit of a surface treatment tank to change the height, and a control device that drives this lifting device are provided, and a control device for driving the lifting device is provided. In response to changes in material specifications and operating conditions, the height of the roll is initially set by driving the lifting device, and when the immersion depth of the strip is outside the control range, the lifting device is driven to set the height of the roll. This is a continuous immersion type surface treatment device designed to fit within
帯鋼は、巻戻機からピンチロール等で送り出さ
れ、溶接機で溶接されつつ連続的に入側ブライド
ルロールによつて入側リンガロール（又はデフレ
クタロール）を介して処理槽へ送り込まれる。そ
して、帯鋼は第１槽において入側リンガロールと
ダムスキツドに支持されて槽内に懸下し、帯鋼の
カテナリが処理液中に浸漬される。同様に第２槽
では初めのダムスキツドと次のダムスキツドによ
つて支持され、最終槽では最終のダムスキツドと
処理槽出口に設置されたリンガロールに支持され
て処理液中に浸漬されつつリンガロールを介して
引上げられ、次に水洗装置、乾燥装置を通つて出
側ブライドルロールによつて送り出され、ピンチ
ロールを介して巻取機に巻取られる。このとき、
帯鋼のカテナリ量が所定範囲内で変化すると磁気
検出器がその変化量を検出してブライドルロール
の送り速度を調整してカテナリを所定値に維持す
るが、帯鋼の材料仕様や運転条件が変更されて、
カテナリ量が所定範囲を超えて変化する場合は、
制御装置の指令によつて駆動回路が昇降装置を駆
動させてリンガロールを上下動することにより、
カテナリ量を磁気検出器の検出可能な所定範囲内
に収める。そして、この所定範囲内におけるカテ
ナリの変化は、制御装置の指令によつて駆動回路
がブライドルロール駆動用モータを駆動させてブ
ライドルロールの送り速度を調整し、カテナリを
正常状態に維持する。
The strip steel is sent out from an unwinder using pinch rolls or the like, and is continuously fed into a treatment tank via an entry bridle roll (or deflector roll) while being welded by a welding machine. Then, the steel strip is suspended in the first tank while being supported by the inlet ring roll and the dam skid, and the catenary of the steel strip is immersed in the treatment liquid. Similarly, in the second tank, the dam skid is supported by the first dam skid and the next dam skid, and in the final tank, it is supported by the final dam skid and a ringer roll installed at the outlet of the processing tank, and is immersed in the processing liquid through the ringer roll. The material is then pulled up, passed through a water washing device and a drying device, sent out by an exit bridle roll, and wound up by a winder via pinch rolls. At this time,
When the catenary amount of the steel strip changes within a predetermined range, a magnetic detector detects the amount of change and adjusts the feed speed of the bridle roll to maintain the catenary at a predetermined value. changed,
If the catenary amount changes beyond the specified range,
The drive circuit drives the lifting device according to commands from the control device to move the ringer roll up and down.
The amount of catenary is kept within a predetermined range that can be detected by a magnetic detector. When the catenary changes within this predetermined range, the drive circuit drives the bridle roll drive motor in response to a command from the control device to adjust the feed speed of the bridle roll and maintain the catenary in a normal state.
以下、本発明を図面に基づいて説明する。第１
〜５図は本発明の１実施例を示す図である。
Hereinafter, the present invention will be explained based on the drawings. 1st
Figures 5 to 5 are diagrams showing one embodiment of the present invention.
第１図は帯鋼の表面処理装置の構成を示す図で
あつて、帯鋼１は巻戻機２からピンチロール３に
よつて送り出され、溶接機４を経て入側ブライド
ルロール５により入側リンガロール８を介して処
理槽６へ送り込まれる。（リンガロールはデフレ
クタロールであつてもよい。）溶接機４はコイル
単位の長さの帯鋼を、連続させて処理槽を通板さ
せるため、次々と端部を突合わせて溶接するため
に配置されたものである。 FIG. 1 is a diagram showing the configuration of a steel strip surface treatment apparatus, in which a steel strip 1 is sent out from an unwinding machine 2 by a pinch roll 3, passes through a welding machine 4, and is transferred to an entry side bridle roll 5. It is fed into the processing tank 6 via the ringer roll 8. (The ringer roll may be a deflector roll.) The welding machine 4 is used to weld the ends of the steel strip one after another in order to pass the steel strip in a continuous manner through the processing tank. It has been placed.
処理槽６はダムスキツド１５ａ，１５ｂによつ
て、この実施例では３等分され、第１槽６ａ、第
２槽６ｂ、最終槽６ｃに画成されている。 In this embodiment, the processing tank 6 is divided into three equal parts by dam skids 15a and 15b, and is divided into a first tank 6a, a second tank 6b, and a final tank 6c.
処理槽６へ送り込まれた帯鋼１は、入側リンガ
ロール８とダムスキツド１５ａによつて支持され
て第１槽６ａ内に懸下し、帯鋼１のカテナリが処
理液中に浸漬される。同様に第２槽６ｂではダム
スキツド１５ａと１５ｂとによつて支持され、最
終槽６ｃではダムスキツド１５ｂと処理槽６の出
口に設置した出側リンガロール９に支持されてそ
れぞれカテナリが処理液中に浸漬された帯鋼１は
出側ブライドルロール１２によつてリンガロール
９から水洗装置１０へ送られて水洗され、次に乾
燥装置１１へ送られて乾燥され、ピンチロール１
３を介して巻取機１４で巻取られる。 The steel strip 1 fed into the treatment tank 6 is suspended in the first tank 6a while being supported by the inlet ringer roll 8 and the dam skid 15a, and the catenary of the steel strip 1 is immersed in the treatment liquid. Similarly, in the second tank 6b, the catenaries are supported by dam skids 15a and 15b, and in the final tank 6c, they are supported by the dam skid 15b and the outlet ring roll 9 installed at the outlet of the processing tank 6, and the catenaries are immersed in the processing liquid. The stripped steel strip 1 is sent from the ringer roll 9 to the washing device 10 by the exit bridle roll 12, where it is washed with water, and then sent to the drying device 11, where it is dried, and the pinch roll 1
3 and is wound up by a winding machine 14.
７は電磁検出器であつて、帯鋼１のカテナリの
最下垂点と該検出器７との距離を検出し、その検
出信号を制御装置１７へ送るようになつている。
ここで、カテナリの最下垂点と検出器７との距離
は、間接的に前記カテナリ量δ及び帯鋼１の処理
液中の浸漬深さを表わすものである。 Reference numeral 7 denotes an electromagnetic detector which detects the distance between the lowest hanging point of the catenary of the steel strip 1 and the detector 7, and sends a detection signal thereof to the control device 17.
Here, the distance between the lowest point of the catenary and the detector 7 indirectly represents the catenary amount δ and the immersion depth of the steel strip 1 in the treatment liquid.
１８は駆動回路であつて、制御装置１７の電磁
検出器７からの信号に基づいた指令によつてブラ
イドルロール側モータＭを駆動させ、ブライドル
ロール５の送り速さを制御する。１９はリンガロ
ール側の駆動回路であつて、同様に制御装置１７
の指令によつて油圧シリンタを備えた昇降装置１
６を駆動させ、リンガロール８の高さを調整す
る。なお、前記駆動回路１８，１９は出側昇降装
置及びブライドルロール１２と制御装置１７との
間にも介装されている。２０は帯鋼１の張力（ユ
ニツトテンシヨン）を検出する張力検出器で、制
御装置１７に検出信号を送り、制御装置１７はこ
のユニツトテンシヨン値と帯鋼通板速度からリン
ガロール高さを指令するようになつている。 Reference numeral 18 denotes a drive circuit that drives the bridle roll motor M in response to a command based on a signal from the electromagnetic detector 7 of the control device 17 to control the feeding speed of the bridle roll 5. Reference numeral 19 denotes a drive circuit on the Ringer roll side, which also includes a control device 17.
Lifting device 1 equipped with a hydraulic cylinder according to the command of
6 to adjust the height of the ringer roll 8. Note that the drive circuits 18 and 19 are also interposed between the exit side lifting device and the bridle roll 12 and the control device 17. 20 is a tension detector that detects the tension (unit tension) of the steel strip 1, and sends a detection signal to the control device 17, and the control device 17 calculates the ringer roll height from this unit tension value and the strip steel threading speed. It has become like giving commands.
次に作用を説明する。 Next, the effect will be explained.
第２図は帯鋼１が処理槽６内に懸下され、その
カテナリが処理液中に浸漬した状態を示す図であ
る。いま、分割された各槽の長さをL1，L2，…，
Lo，各槽における処理液の比重をρ1，ρ2，…ρo，
各槽入口の帯鋼張力をTE1，TE2，…，TEo各槽出
口の帯鋼張力をTD1，TD2，…，TDo，帯鋼の比重
をρ0、板幅をｂ、板厚をｔ、ダムスキツド摺動面
における摩擦係数をμ、各槽における液の抵抗を
F1，F2，…，Fo，とすると、帯鋼１は連続体で
あるので、次の張力関係式が成立する。 FIG. 2 is a diagram showing a state in which the steel strip 1 is suspended in the treatment tank 6 and its catenary is immersed in the treatment liquid. Now, the length of each divided tank is L 1 , L 2 ,...,
L o , the specific gravity of the treatment liquid in each tank is ρ 1 , ρ 2 ,...ρ o ,
The steel strip tension at the inlet of each tank is T E1 , T E2 ,..., T Eo The steel strip tension at the outlet of each tank is T D1 , T D2 ,..., T Do , the specific gravity of the steel strip is ρ 0 , the plate width is b, The plate thickness is t, the coefficient of friction on the sliding surface of the dam skid is μ, and the resistance of the liquid in each tank is
Assuming that F 1 , F 2 , ..., F o , the following tension relational expression holds true since the steel strip 1 is a continuous body.
ここで液の抵抗Ｆは、帯鋼の通板速度をｖ、重
力加速度をｇ、帯鋼と液の摩擦抵抗係数をCf、帯
鋼の浸漬長さをｌとすると、次式で表わされる。 Here, the resistance F of the liquid is expressed by the following equation, where v is the threading speed of the steel strip, g is the gravitational acceleration, C f is the frictional resistance coefficient between the steel strip and the liquid, and l is the immersion length of the steel strip. .
Ｆ＝2ρv2bl／ｇ・Cf …(2)
(1)、(2)式より帯鋼の張力は帯鋼１の通板速度に
比例して大きくなる。また前述のごとく、帯鋼の
張力とカテナリ量δは反比例の関係にあるが、第
３図は実際の運転状態における帯鋼の張力とカテ
ナリの形状を示したものであつて、帯鋼の通板速
度ｖが大きくなるとカテナリ量が著しく減少して
いることが表わされている。F=2ρv 2 bl/g・C f ...(2) From equations (1) and (2), the tension in the steel strip increases in proportion to the threading speed of the steel strip 1. Furthermore, as mentioned above, the tension in the steel strip and the amount of catenary δ are inversely proportional to each other, but Figure 3 shows the tension in the steel strip and the shape of the catenary under actual operating conditions. It is shown that as the plate speed v increases, the amount of catenary decreases significantly.
次に、槽内におけるカテナリ量の制御は、磁気
検出器７が、該検出器とカテナリの最低点との距
離Ｈを検出し、この検出信号が制御装置１７に送
られると制御装置１７は駆動回路１８に指令して
モータＭを駆動させ、帯鋼１のカテナリが常に所
定制御範囲Ｓ内にあるように、ブライドルロール
５の送り速度を制御する（第１，２図参照）。し
かし、磁気検出器７の検出可能距離は通常、槽の
底面から約300mmが限界であるため、帯鋼の材料
仕様や張力、通板速度の運転条件が変つた場合で
も、カテナリの最低点は上記所定制御範囲Ｓ内に
入つている必要がある。 Next, to control the amount of catenary in the tank, the magnetic detector 7 detects the distance H between the detector and the lowest point of the catenary, and when this detection signal is sent to the control device 17, the control device 17 is activated. A command is given to the circuit 18 to drive the motor M, and the feed speed of the bridle roll 5 is controlled so that the catenary of the steel strip 1 is always within a predetermined control range S (see FIGS. 1 and 2). However, the detection distance of the magnetic detector 7 is normally limited to about 300 mm from the bottom of the tank, so even if the operating conditions such as the material specifications, tension, and threading speed of the steel strip change, the lowest point of the catenary will be It is necessary to fall within the predetermined control range S mentioned above.
ところで、通常、第１槽及び最終槽のそれぞれ
入口及び出口に設けられたリンガロールは、処理
液の流出を防ぐためその液面より高い位置となつ
ている。いま第４図において、ダムスキツドの高
さをh1、リンガロールの高さをh2、タムとリンガ
ロールの距離をＬ、帯鋼の張力をＴ、水平分力を
Ｈ、垂直分力をＶ、帯鋼の自重をｗとし、図のご
とくxy座標をとると、帯鋼カテナリの曲線方程
式は次式で表わされる。 Incidentally, the ring rolls provided at the inlet and outlet of the first tank and the final tank, respectively, are usually located at a higher position than the liquid level to prevent the processing liquid from flowing out. In Figure 4, the height of the dam skid is h 1 , the height of the ringer roll is h 2 , the distance between the tom and the ringer roll is L, the tension of the steel strip is T, the horizontal component is H, and the vertical component is V , the weight of the steel strip is w, and the xy coordinates are taken as shown in the figure.The curve equation of the steel strip catenary is expressed by the following equation.
ｙ＝Ｈ／ｗCOS ｈ｛（ｘ−c1）ｗ／Ｈ｝＋C2 …(3)
カテナリ最低点Ｃにおけるｘの値はｘ＝C1の
位置にあり、帯鋼の浸漬長さｌはｌ＝2C1とな
る。またカテナリ最低点Ｃの高さはｙ＝C2とな
る。ここで境界条件を(3)式に代入して方程式を解
くとC1，C2の値は
C2＝h1−Ｈ／ＷCOSh（WC1／Ｈ） …(5)
となる。以上の関係を実際の槽に適用した場合、
カテナリ最低点Ｃの高さを所定の値にする方法
は、上式より槽の長さＬ、帯鋼の水平分力Ｈ、ダ
ムの高さh1、リンガロールの高さh2を変更するこ
とによつて可能であるが、槽の長さＬ及びダムの
高さh1を、帯鋼の前記運転条件の変更に対応して
変更することは実用上困難であるが、水平分力Ｈ
及びリンガロールの高さh2を変更することは本実
施例においては容易となる。また、処理槽内にお
ける帯鋼の張力Ｔは帯鋼の自重に比して大きい値
で運転されるので、第４図におけるＡ点及びＢ点
でのカテナリ曲線の勾配は小さいためＴ≒Ｈとみ
なすことができ、従つて帯鋼の張力Ｔとリンガロ
ールの高さh2との組合せによつて、カテナリ量を
所定制御範囲内に収めることができる。そこで、
本実施例においては、帯鋼の運転条件による張力
（ユニツトテンシヨン）を張力検出器２０で検出
して制御装置１７に送り、このユニツトテンシヨ
ン値と通板速度の関係からリンガロールの高さh2
を予め算出（第５図参照）し、これを制御装置１
７に初期設定しておくと、この制御装置は駆動回
路１９に指令して昇降装置１６を駆動せしめ、リ
ンガロール８，９の高さを変更する。すなわち、
処理槽の入口及び出口のリンガロールを昇降する
と、第１槽及び最終槽のカテナリの懸下支点を上
下することになつてカテナリの勾配を変え、カテ
ナリ中央部の最低点を上下に移動してカテナリの
最低点を所定の高さ又は磁気検出器の検出範囲Ｓ
内に収まるように設定することができる。 y=H/wCOS h{(x-c 1 )w/H}+C 2 ...(3) The value of x at the lowest catenary point C is at the position x=C 1 , and the immersion length l of the strip steel is l = 2C1 . Also, the height of the lowest catenary point C is y= C2 . Now, by substituting the boundary conditions into equation (3) and solving the equation, the values of C 1 and C 2 are C 2 =h 1 −H/WCOSh(WC 1 /H) (5). When the above relationship is applied to an actual tank,
The method of setting the height of the lowest point C of the catenary to a predetermined value is to change the length L of the tank, the horizontal component force H of the steel strip, the height h 1 of the dam, and the height h 2 of the ringer roll from the above formula. However, it is practically difficult to change the length L of the tank and the height h1 of the dam in response to changes in the operating conditions of the steel strip.
In this embodiment, it is easy to change the height h2 of the ring roll. In addition, since the tension T of the steel strip in the treatment tank is operated at a larger value than the weight of the steel strip, the slope of the catenary curve at points A and B in Fig. 4 is small, so T≒H. Therefore, the amount of catenary can be kept within a predetermined control range by the combination of the tension T of the steel strip and the height h2 of the ringer roll. Therefore,
In this embodiment, the tension (unit tension) depending on the operating conditions of the steel strip is detected by the tension detector 20 and sent to the control device 17, and the height of the Ringer roll is determined based on the relationship between the unit tension value and the threading speed. h2
is calculated in advance (see Fig. 5), and this is calculated in advance by the control device 1.
7, this control device instructs the drive circuit 19 to drive the lifting device 16 to change the height of the ringer rolls 8 and 9. That is,
When the ring rolls at the inlet and outlet of the treatment tank are raised and lowered, the hanging fulcrums of the catenaries in the first and final tanks are raised and lowered, changing the slope of the catenaries and moving the lowest point in the center of the catenaries up and down. Set the lowest point of the catenary to a specified height or the detection range S of the magnetic detector
It can be set to fit within.
第５図は帯鋼の張力とライン速度によつて求め
られるリンガロールの最適高さを示した例であつ
て、この値が制御装置内の記憶部に記憶テーブル
として記憶されており、運転条件が変更されたと
きにこのテーブルを参照してリンガロール高さh2
を設定し、これを指令され、駆動回路を介してリ
ンガロールが昇降される。 Figure 5 shows an example of the optimum height of the Ringer roll determined by the tension of the strip steel and the line speed. This value is stored as a memory table in the memory section of the control device, and the operating conditions Refer to this table when the lingual roll height h 2
is set, commanded, and the ringer roll is raised and lowered via the drive circuit.
以上説明してきたように、この発明によればそ
の構成を、表面処理槽の入口及び出口に設置され
たデフレクタロール又はリンガロールを昇降させ
て高さを変更する昇降装置と、この昇降装置を駆
動させる制御装置を備え、この制御装置は、帯鋼
の材料仕様及び基準運転張力、ライン速度等の運
転条件に応じて前記ロール高さを設定し、さらに
帯鋼の浸漬深さが制御範囲外となつたときに、前
記昇降装置を駆動させて制御範囲内に収めること
を特徴とする連続式浸漬型表面処理装置としたた
め、表面処理槽の第１槽及び最終槽における帯鋼
のカテナリ量制御を、帯鋼の材料仕様及び張力、
ライン速度等の運転条件が変更になつた場合でも
行うことができ、従つて帯鋼のカテナリの処理液
中浸漬深さに補正を加えることができるので、広
範囲な条件下においても表面処理運転をすること
が可能となつた。また、帯鋼カテナリの浸漬深さ
を一定に保持できることは帯鋼の浸漬長さを一定
に保つことでもあり、かつ各槽における所要浸漬
時間を確保することになつて、帯鋼表面と処理液
との反応を効果的に作用させることができ、安定
した良品質の表面処理鋼板を生産できるという効
果が得られる。
As explained above, according to the present invention, the configuration includes a lifting device that lifts and lowers the deflector roll or ringer roll installed at the entrance and exit of the surface treatment tank to change the height, and a lifting device that drives the lifting device. The control device sets the roll height according to the material specifications of the steel strip, standard operating tension, line speed, and other operating conditions, and further controls the height of the rolls when the immersion depth of the steel strip is outside the control range. Since the continuous immersion type surface treatment apparatus is characterized in that the elevating device is driven to keep the temperature within the control range when the surface treatment tank becomes wet, the catenary amount of the strip steel in the first tank and the final tank of the surface treatment tank can be controlled. , material specifications and tension of the steel strip,
This process can be performed even when operating conditions such as line speed change, and the depth of immersion of the steel strip catenary in the treatment solution can be corrected, so surface treatment operations can be performed even under a wide range of conditions. It became possible to do so. In addition, keeping the immersion depth of the steel strip catenary constant also means keeping the immersion length of the steel strip constant, and ensuring the required immersion time in each tank. This allows the reaction to occur effectively, resulting in the production of stable, high-quality surface-treated steel sheets.
第１図は本発明に係る実施例の構成説明図、第
２図は第１図の部分拡大図であつて、帯鋼のカテ
ナリ状態の説明図、第３図は表面処理槽の各槽に
おける帯鋼の張力分布（上段図）と、通板速度に
対応したカテナリの形状を示す（下段図）実施
図、第４図はリンガロール高さとカテナリ形状と
の関連を示す説明図、第５図は運転速度による帯
鋼張力とリンガロールの設定高さの関係を示す図
である。
１……鋼板（帯鋼）、６……処理槽、６ａ……
第１槽、６ｂ……第２槽、６ｃ……最終槽、８，
９……リンガロール（又はデフレクタロール）、
１６……昇降装置、１７……制御装置、Ｓ……制
御範囲。
FIG. 1 is an explanatory diagram of the configuration of an embodiment according to the present invention, FIG. 2 is a partially enlarged view of FIG. 1 and is an explanatory diagram of the catenary state of the steel strip, and FIG. Figure 4 is an explanatory diagram showing the relationship between ringer roll height and catenary shape, Figure 5 is a diagram showing the relationship between the strip steel tension and the set height of the Ringer roll depending on the operating speed. 1... Steel plate (steel strip), 6... Treatment tank, 6a...
1st tank, 6b...2nd tank, 6c...final tank, 8,
9...Linger roll (or deflector roll),
16... Lifting device, 17... Control device, S... Control range.
Claims (1)
た処理槽の入側及び出側にデフレクタロール又は
リンガロールを設け、前記入側より帯鋼を供給す
るとともに前記分画された各槽に連続して帯鋼を
懸下浸漬して通板することによつて帯鋼の表面処
理を行う連続式浸漬型表面処理装置において、前
記デフレクタロール又はリンガロールを昇降させ
て高さを変更する昇降装置と、該昇降装置を駆動
する制御装置とを備えたことを特徴とする連続式
浸漬型表面処理装置。 ２ 制御装置は、前記帯鋼の板厚、板幅、比重の
材料仕様及び帯鋼の基準運転張力、ライン速度の
運転条件に応じて昇降装置を駆動して前記デフレ
クタロールまたはリンガロール高さを初期設定す
ることを特徴とする前記特許請求の範囲第１項記
載の連続式浸漬型表面処理装置。 ３ 制御装置は、前記帯鋼の浸漬深さが制御範囲
外となつたときに、前記昇降装置を駆動して制御
範囲内に収めることを特徴とする前記特許請求の
範囲第１項記載の連続式浸漬型表面処理装置。[Scope of Claims] 1. Deflector rolls or Ringer rolls are provided on the inlet and outlet sides of a treatment tank in which the surface treatment liquid is stored and divided into a plurality of tanks, and the steel strip is supplied from the input side and the In a continuous immersion type surface treatment device that performs surface treatment on a steel strip by continuously suspending the steel strip and passing it through each separated tank, the deflector roll or ringer roll is raised and lowered. What is claimed is: 1. A continuous immersion type surface treatment apparatus, comprising: a lifting device that changes the height by using the lifting device; and a control device that drives the lifting device. 2. The control device drives the lifting device according to the material specifications such as the thickness, width, and specific gravity of the steel strip, the standard operating tension of the steel strip, and the operating conditions of the line speed to adjust the height of the deflector roll or ringer roll. The continuous immersion type surface treatment apparatus according to claim 1, characterized in that initial settings are made. 3. The continuous flow system according to claim 1, wherein the control device drives the lifting device to bring the immersion depth of the steel strip within the control range when the immersion depth of the steel strip falls outside the control range. Immersion type surface treatment equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26637685A JPS62127486A (en) | 1985-11-27 | 1985-11-27 | Continuous immersion type surface treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26637685A JPS62127486A (en) | 1985-11-27 | 1985-11-27 | Continuous immersion type surface treatment apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62127486A JPS62127486A (en) | 1987-06-09 |
| JPH0253517B2 true JPH0253517B2 (en) | 1990-11-16 |
Family
ID=17430078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26637685A Granted JPS62127486A (en) | 1985-11-27 | 1985-11-27 | Continuous immersion type surface treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62127486A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63192465U (en) * | 1987-05-27 | 1988-12-12 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929261A (en) * | 1972-07-17 | 1974-03-15 |
-
1985
- 1985-11-27 JP JP26637685A patent/JPS62127486A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929261A (en) * | 1972-07-17 | 1974-03-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62127486A (en) | 1987-06-09 |
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