JPS6035975B2 - Steel strip cooling control method - Google Patents
Steel strip cooling control methodInfo
- Publication number
- JPS6035975B2 JPS6035975B2 JP9482480A JP9482480A JPS6035975B2 JP S6035975 B2 JPS6035975 B2 JP S6035975B2 JP 9482480 A JP9482480 A JP 9482480A JP 9482480 A JP9482480 A JP 9482480A JP S6035975 B2 JPS6035975 B2 JP S6035975B2
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- cooling body
- cooling
- rotary cooling
- rotary
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
- C21D9/5735—Details
- C21D9/5737—Rolls; Drums; Roll arrangements
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Description
【発明の詳細な説明】
この発明は連続熱処理ラインにおける鋼帯の冷却制御方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling cooling of a steel strip in a continuous heat treatment line.
鋼帯の連続熱処理ラインにおいて、内周面に冷却水が循
環する回転冷却体を用いて鋼帯の終点温度を制御する方
法として巻回し長さ、袷媒の流量温度を変える方法が一
般に公知であり、例えば特開昭５４−１１８３１５号公
報に提起されている。In a continuous heat treatment line for steel strips, there is a generally known method of controlling the end point temperature of the steel strip by using a rotary cooling body in which cooling water circulates around the inner circumferential surface of the steel strip, by changing the winding length and the flow rate temperature of the bedding medium. This is proposed, for example, in Japanese Unexamined Patent Publication No. 118315/1983.
連続熱処理ラインにおける鋼帯の冷却制御法としては制
御の応答性，設備費等により鋼帯の巻回し長さを変える
ことが望ましいが、巻回し長さを変更すると鋼帯にか）
る張力が変化する。連続熱処理ラインにおける鋼帯張力
の変動は、常用張力の士１０％以内に抑える必要があり
、上記回転冷却体による張力変動をこの範囲に抑えるた
めには、回転冷却体の変位量（シリンダー位置）はシリ
ンダー変位量Ｌ／回転冷却体のロール径○ミ０．１程度
しか変更することができなかった。これは冷却能力の５
〜１０％程度しか変えられないことを意味するものであ
る。本発明者らは上述の問題を検討の結果、この発明を
完成したものであって、極めて精度の高い鋼帯の冷却制
御法を提起するものである。As a cooling control method for steel strip in a continuous heat treatment line, it is desirable to change the winding length of the steel strip depending on control responsiveness, equipment costs, etc.;
The tension applied changes. Fluctuations in steel strip tension in a continuous heat treatment line must be suppressed to within 10% of the normal tension, and in order to suppress tension fluctuations due to the rotary cooling body within this range, the displacement of the rotary cooling body (cylinder position) It was possible to change the cylinder displacement amount L/roll diameter of the rotary cooling body by only about 0.1. This is the cooling capacity of 5
This means that it can only be changed by about 10%. The inventors of the present invention have completed this invention as a result of studying the above-mentioned problems, and propose an extremely accurate cooling control method for steel strips.
以下この発明を図面について詳述する。The present invention will be described in detail below with reference to the drawings.
第１図はこの発明の一実施例を示す説明図であり、第２
図はこの発明の他の実施例を示す説明図である。FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG.
The figure is an explanatory diagram showing another embodiment of the invention.
高温の鋼帯１はハース。High temperature steel strip 1 is a hearth.
−ルを介して冷却帯２川こ導入され、所望の板温を保持
してハースロ−ル７から次工程に移送される。胴部内周
面に冷媒を流通する回転冷却体ロール２〜６が冷却帯２
０に配置されるが、回転冷却体ロール３，５はシリンダ
ー１０により移動可能である。冷却帯２０の出側に鋼帯
１の板温計９を設けて温度ｔｌと設定値ｔ２との偏差△
を温度調節器１３で演算してサーボバルブ１１に入力す
る。サーボバルブ１１はシリンダー１０１こ導適してい
る。更にシリンダー１川まシリンダー変位検出器１２に
導通して、その偏位量を演算装置１４にインプットする
。所望の信号が速度制御装置１５に導入され回転ロール
モータ３′−７′の回転数を調節している。第２図はこ
の発明の他の実施例を示している。The sheet is introduced into two cooling zones through a hearth roll 7, maintained at a desired temperature, and transferred to the next process from the hearth roll 7. Rotating cooling body rolls 2 to 6 through which a refrigerant flows through the inner circumferential surface of the body constitute a cooling zone 2.
0, but the rotary cooling body rolls 3, 5 are movable by the cylinder 10. A plate thermometer 9 of the steel strip 1 is provided on the outlet side of the cooling zone 20 to measure the deviation △ between the temperature tl and the set value t2.
is calculated by the temperature controller 13 and input to the servo valve 11. The servo valve 11 is suitable for guiding the cylinder 101. Further, the cylinder 1 is electrically connected to a cylinder displacement detector 12, and the amount of displacement thereof is inputted to an arithmetic unit 14. The desired signal is introduced into the speed control device 15 to regulate the rotational speed of the rotary roll motors 3'-7'. FIG. 2 shows another embodiment of the invention.
図において鋼帯１は冷却帯２０に導入されハースロール
７を介して次工程に移送される。冷却帯２０の鋼帯出側
温度が板温計９で検知されて温度調節計１３にインプッ
トされ、更に偏位量信号がサ−ボバルプ１１に導入され
る。更にこの発明においては回転冷却体ロール６に張力
検出器を設けて、鋼帯１にか）る張力を検知して演算装
置１４にインプットし、速度制御装置１５を介して所望
の回転冷却体の駆動モータの回転数を制御して、鋼帯の
出側速度を制御するものである。In the figure, a steel strip 1 is introduced into a cooling zone 20 and transferred to the next process via hearth rolls 7. The steel strip outlet temperature of the cooling zone 20 is detected by the plate thermometer 9 and inputted to the temperature controller 13, and a deviation amount signal is further introduced to the servo bulb 11. Furthermore, in this invention, a tension detector is provided on the rotary cooling body roll 6 to detect the tension applied to the steel strip 1, inputting it to the calculation device 14, and controlling the desired rotational cooling body through the speed control device 15. The speed at which the steel strip exits is controlled by controlling the rotation speed of the drive motor.
以上の説明においてはいずれも巻回し長さの調節手段と
して回転冷却体出側の板溢を測定して目標の温度になる
様に制御する方法を示して説明したが、これらに限定さ
れるものではなく、例えば回転冷却体による抜熱量を一
定に制御して鋼帯の目標温度をうる方法でもよい。In the above explanation, the method of measuring overflow on the outlet side of the rotary cooling body and controlling the temperature to a target temperature was explained as a means of adjusting the winding length, but the method is not limited to this. Instead, for example, a method may be used in which the amount of heat removed by the rotary cooling body is controlled to be constant to obtain the target temperature of the steel strip.
しかしてこの発明によるときは回転冷却体の巻回し長さ
を調整すると同時に張力コントロールを行うので、巻回
し長さが大きく自由にとれ、張力変動による操業上のト
ラブルも解消しうる。However, according to the present invention, since the winding length of the rotary cooling body is adjusted and the tension is controlled at the same time, the winding length can be adjusted freely, and operational troubles caused by tension fluctuations can be solved.
即ち回転冷却体を含めた以後の炉内ロールの速度制御は
回転冷却体が移動している期間中のみ減速又は増速させ
る。これは鋼帯の長さ変化量を吸収させればよいことか
ら容易に理解される。以上この発明を加熱，均熱後の比
較的高温領域で回転冷却体を用いて冷却する場合につい
て説明したが、過時効処理後の比較的低温領域で回転冷
却体を用いて冷却する場合にも勿論適用できる。又速度
制御は回転冷却体を含めた出側部分又は入側部分いずれ
でもよいが、望ましくは出側部分の方が操業トラブルや
品質トラブルを回避できて好ましい。以上この発明にお
いては回転冷却体の張力コントロールを回転冷却体の移
動時に併用するので、巻回し長さが大きく自由にとれる
効果がある。That is, the subsequent speed control of the rolls in the furnace including the rotary cooling body is decelerated or accelerated only during the period when the rotary cooling body is moving. This is easily understood since it is sufficient to absorb the amount of change in the length of the steel strip. The present invention has been described above with reference to the case of cooling using a rotary cooling body in a relatively high temperature region after heating and soaking, but it can also be applied when cooling using a rotary cooling body in a relatively low temperature region after overaging treatment. Of course it can be applied. Further, the speed may be controlled either at the outlet side including the rotary cooling body or at the inlet side, but desirably the outlet side is preferable since it can avoid operational troubles and quality troubles. As described above, in this invention, since the tension control of the rotary cooling body is also used when the rotary cooling body is moved, there is an effect that the winding length can be changed freely.
次にこの発明をロール径２仇の冷却回転体をもつ装置に
適用した例を示す。即ち本発明法によるときは冷却能力
は大きくなり、鋼帯の張力変動は極めて小さくすること
ができた。Next, an example will be shown in which the present invention is applied to a device having a cooling rotating body with a roll diameter of 2 mm. That is, when using the method of the present invention, the cooling capacity was increased and the fluctuation in tension of the steel strip could be made extremely small.
これは操業の安定性からその効果は大きい。This has a great effect on operational stability.
第１図は本発明の説明図、第２図は本発明の他の実施例
を示す説明図である。
１・・・・・・鋼帯、２〜６・・・…回転冷却体ロール
、１０……シリンダー、１１……サーボバルブ、１３・
・・・・・温度調節器、１４・・・・・・演算装置、１
５・・・・・・速度制御装置。
多′図
多？図FIG. 1 is an explanatory diagram of the present invention, and FIG. 2 is an explanatory diagram showing another embodiment of the present invention. 1... Steel strip, 2-6... Rotating cooling body roll, 10... Cylinder, 11... Servo valve, 13.
... Temperature controller, 14 ... Arithmetic device, 1
5... Speed control device. Many? figure
Claims (1)
を、胴部内周面に冷媒を流通する回転冷却体に巻回して
冷却するあたり、回転冷却体を移動して所望の鋼帯の巻
回し長さに制御すると同時に、該期間中回転冷却体以降
の鋼帯の出側速度を制御して鋼帯にかゝる張力を一定に
保つことを特徴とする鋼帯の冷却制御方法。1. When cooling a high-temperature steel strip in a continuous heat treatment line for cold-rolled steel strips by winding it around a rotary cooling body that circulates a refrigerant around the inner peripheral surface of the body, the rotary cooling body is moved to cool down the desired steel strip. A method for controlling the cooling of a steel strip, which comprises controlling the winding length and at the same time controlling the exit speed of the steel strip from a rotary cooling body during the winding period to keep the tension on the steel strip constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9482480A JPS6035975B2 (en) | 1980-07-11 | 1980-07-11 | Steel strip cooling control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9482480A JPS6035975B2 (en) | 1980-07-11 | 1980-07-11 | Steel strip cooling control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5723035A JPS5723035A (en) | 1982-02-06 |
| JPS6035975B2 true JPS6035975B2 (en) | 1985-08-17 |
Family
ID=14120795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9482480A Expired JPS6035975B2 (en) | 1980-07-11 | 1980-07-11 | Steel strip cooling control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6035975B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599130A (en) * | 1982-07-08 | 1984-01-18 | Kawasaki Steel Corp | Roll cooling method of steel strip |
| JPS5920428A (en) * | 1982-07-26 | 1984-02-02 | Nippon Kokan Kk <Nkk> | Steel strip cooling method in continuous annealing furnace |
| JPS609962U (en) * | 1983-06-29 | 1985-01-23 | 日本鋼管株式会社 | Roll cooling equipment |
| JPS61243128A (en) * | 1985-04-20 | 1986-10-29 | Nippon Steel Corp | Cooling method for metallic strip in cooling zone of continuous annealing furnace |
-
1980
- 1980-07-11 JP JP9482480A patent/JPS6035975B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5723035A (en) | 1982-02-06 |
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