JPS58313A - Controlling device for seamless pipe rolling mill - Google Patents
Controlling device for seamless pipe rolling millInfo
- Publication number
- JPS58313A JPS58313A JP56096507A JP9650781A JPS58313A JP S58313 A JPS58313 A JP S58313A JP 56096507 A JP56096507 A JP 56096507A JP 9650781 A JP9650781 A JP 9650781A JP S58313 A JPS58313 A JP S58313A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- seamless pipe
- rolled material
- circumferential direction
- rolling mill
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 73
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005098 hot rolling Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/78—Control of tube rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はシームレスパイプ圧延機制御装置に係り、更に
具体的にはシームレスパイプ圧延ラインにおける樽型ロ
ールを使用した傾斜圧延型の熱間圧延機において、圧延
ロールの圧下量（ゴージと称される。）及びプラグ位置
（リードと称される。）の設定値を制御し、偏肉の少な
いシームレスパイプを圧延製造するに好適なシームレス
パイプ圧延機制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seamless pipe rolling mill control device, and more specifically, in a tilt rolling type hot rolling mill using barrel rolls in a seamless pipe rolling line, it is possible to control the rolling reduction amount of the rolling rolls. The present invention relates to a seamless pipe rolling mill control device suitable for controlling setting values of a gorge (referred to as a gorge) and a plug position (referred to as a lead) and rolling a seamless pipe with less uneven thickness.
従来の樽型ロールを使用した傾斜圧延型の圧延機におい
ては圧延素材が加熱される時に円周方向の温度差を生じ
る。例えば回鴨型加熱炉の場合加熱は上面より行われ、
下面は上面に比較し低温で加熱炉より抽出、圧延される
。In a conventional inclined rolling mill using barrel-shaped rolls, a temperature difference occurs in the circumferential direction when the rolled material is heated. For example, in the case of a reheating furnace, heating is performed from the top.
The lower surface is extracted and rolled in a heating furnace at a lower temperature than the upper surface.
この結果、圧延素材の円周方向の温度差により、円周方
向での変形抵抗値が変化する。従来はこの円周方向の変
形抵抗の差を無視し、全周にわたって一律に圧延機への
設定を行っていた為どうしても円周方向の偏肉が発生し
て真円のシームレスパイプを圧延製造することが困難で
あった。As a result, the deformation resistance value in the circumferential direction changes due to the temperature difference in the circumferential direction of the rolled material. Conventionally, this difference in deformation resistance in the circumferential direction was ignored and the rolling mill was set uniformly over the entire circumference, which inevitably resulted in uneven thickness in the circumferential direction, making it difficult to roll and manufacture perfectly circular seamless pipes. It was difficult.
本発明の目的はシームレスパイプの圧延製造時における
円周方向の偏肉の発生の防止を図ったシームレスパイプ
圧延機制御装置を提供することにある。An object of the present invention is to provide a seamless pipe rolling mill control device that prevents uneven thickness in the circumferential direction during rolling production of seamless pipes.
本発明の特徴は圧延中に圧延素材が回転することに着目
し、圧延機の前面又は後面に温度センサを設置１〜、圧
延素材の円周方向の温度分布を間１定し、その測定した
温度分布から圧延位置における変形抵抗値を算出し、該
変形抵抗値に基づいて圧延機への設定値を実時間で変更
するように構成した点にある。The feature of the present invention is that the rolled material rotates during rolling, and a temperature sensor is installed on the front or rear surface of the rolling mill, and the temperature distribution in the circumferential direction of the rolled material is fixed and measured. The present invention is configured to calculate the deformation resistance value at the rolling position from the temperature distribution, and change the setting value for the rolling mill in real time based on the deformation resistance value.
以下、本発明の実施例を図面に基づいて具体的に説明す
る。第１図には本発明に係るシームレスパイプ圧延機制
御装置の一実施例の構成が示されている。本実施例は圧
延機前面に温度センサを設け、圧延直前の圧延材の温度
分布から圧延機の設定値（圧延ロールの圧下量及びプラ
グ位置）を実時間で変更するものである。圧延素材１は
圧延ロール２とプラグ３により圧延される。モータ４は
圧延ロール２を駆動する。圧延機の入側に設けられた温
度センサ５で測定された温度は制御装置６に入力され、
該制御装置６内の記憶部により記憶される。又モータ４
の回転数信号も制御装置６に人力され、圧延素材の温度
測定点の追跡が行われる。Embodiments of the present invention will be specifically described below based on the drawings. FIG. 1 shows the configuration of an embodiment of a seamless pipe rolling mill control device according to the present invention. In this embodiment, a temperature sensor is provided in front of the rolling mill, and the setting values of the rolling mill (the rolling reduction amount and the plug position) are changed in real time based on the temperature distribution of the rolled material immediately before rolling. A rolling material 1 is rolled by rolling rolls 2 and plugs 3. Motor 4 drives rolling roll 2 . The temperature measured by the temperature sensor 5 installed on the entrance side of the rolling mill is input to the control device 6,
The information is stored in a storage section within the control device 6. Also motor 4
The rotational speed signal is also input manually to the control device 6, and the temperature measurement points of the rolled material are tracked.
第３図は圧延素材表面の温度測定点の軌跡を示すもので
、その測定点の軌跡Ｃはらせん線の曲線となる。FIG. 3 shows the locus of temperature measurement points on the surface of the rolled material, and the locus C of the measurement points is a spiral curve.
前記温度センサ５で測定した温度より、圧延素材の円周
方向の温度変化を取り込み、変形抵抗値を求める。From the temperature measured by the temperature sensor 5, the temperature change in the circumferential direction of the rolled material is taken in to determine the deformation resistance value.
求められた変形抵抗値よシ圧延荷重を求め、該圧延荷重
より適切なゴージ又はリードを決定する。A rolling load is determined based on the determined deformation resistance value, and an appropriate gorge or lead is determined from the rolling load.
以上の演算は第１図の制御装置６により行われ、適切な
ゴージ又はリードを設定する為の制御信号が駆動装置７
に出力される。The above calculations are performed by the control device 6 in FIG. 1, and a control signal for setting an appropriate gorge or lead is sent to the drive device
is output to.
次に第２図に本発明の他の実施例の構成を示す。Next, FIG. 2 shows the configuration of another embodiment of the present invention.
本実施例が第１図の実施例と異なる点は温度センサを圧
延機の後面に設置し、圧延材の圧延後の温度分布を測定
し、この測定結果から現在、圧延中の圧延材の圧延位置
の温度を推定し、この温度から圧延機の設定値（ゴージ
及びリード）を実時間で変更するように構成した点であ
り、他の構成及び動作は全く同様であるので重複する説
明は省略する。This embodiment differs from the embodiment shown in Fig. 1 by installing a temperature sensor at the rear of the rolling mill to measure the temperature distribution of the rolled material after rolling. The point here is that the temperature at the location is estimated and the setting values of the rolling mill (gorge and lead) are changed in real time based on this temperature.The other configurations and operations are exactly the same, so duplicate explanations will be omitted. do.
本実施例では温度推定を下記の如く行う。同図においで
、まず温舵センサ５により検出された圧延後の圧延材の
円周方向の温度θが圧延ロール２の回転周波数ω／２π
を基本とする一連の高周波成分に分解可能であるので
θ−θ０＋Σθｌ５ｉｎ （ｉωｔ＋αＩ）
−・・（１）量＋五
であられすことができる。上記（１）式のｎは制御装置
６の応答性等より決定される有限の正整数である。次に
測定した温度より、位相α、・・・α。及び利得θ。・
・・θ。を求める。以上の方法により現在、圧延中の圧
延材の圧延点の温度を推定し、推定温度より変形抵抗値
を求め、変形抵抗値より圧延荷重を求め、圧延荷重より
適切なゴージ及びリードを決定する。In this embodiment, temperature estimation is performed as follows. In the figure, first, the temperature θ in the circumferential direction of the rolled material after rolling detected by the temperature rudder sensor 5 is determined by the rotation frequency ω/2π of the rolling roll 2.
Since it can be decomposed into a series of high-frequency components based on θ−θ0+Σθl5in (iωt+αI)
-...(1) Amount + 5 can cause rain. n in the above equation (1) is a finite positive integer determined based on the responsiveness of the control device 6, etc. Next, from the measured temperature, the phase α,...α. and gain θ.・
...θ. seek. By the above method, the temperature at the rolling point of the rolled material currently being rolled is estimated, the deformation resistance value is determined from the estimated temperature, the rolling load is determined from the deformation resistance value, and an appropriate gorge and lead are determined from the rolling load.
以上に説明した如く、本発明では圧延機の前面又は後面
に温度センサを設置し、圧延素材の円周方向の温度分布
を測定し、その測定した温度分布から圧延位置における
変形抵抗値を算出し、該変形抵抗値に基づいて圧延機へ
の設定値を実時間で変更するように構成したので、本発
明によればシームレスパイプの圧延製造時における円周
方向の偏肉の発生の防止が図れる。As explained above, in the present invention, a temperature sensor is installed on the front or rear surface of the rolling mill to measure the temperature distribution in the circumferential direction of the rolled material, and the deformation resistance value at the rolling position is calculated from the measured temperature distribution. Since the setting value for the rolling mill is changed in real time based on the deformation resistance value, the present invention can prevent uneven thickness in the circumferential direction during rolling production of seamless pipes. .
尚、圧延機前面でのスケール付着が少なく且つ圧延機前
面での温度測定が容易な場合は第１図の実施例の方式が
有効であり、スケール付着が多く圧延機前面での温度測
定が困難である場合には第２図に示した方式が有効であ
る。In addition, when there is little scale adhesion at the front of the rolling mill and it is easy to measure the temperature at the front of the rolling mill, the method of the embodiment shown in Figure 1 is effective. In this case, the method shown in FIG. 2 is effective.
第１図は本発明に係るシームレスパイプ圧延機制御装置
の一実施例の構成を示す構成図、第２図は本発明の他の
実施例の構成を、示す構成図、第３図は圧延材の温度測
定点の軌跡を示す説明図である。
■・・・圧延材、２・・・圧延ロール、？・・・プラグ
、４・・・モータ、５・・・温度センサ、６・・・制御
装置、７・・・駆動装置、
代理人 弁理士 高橋明夫
竿１０Fig. 1 is a block diagram showing the structure of one embodiment of a seamless pipe rolling mill control device according to the present invention, Fig. 2 is a block diagram showing the structure of another embodiment of the present invention, and Fig. 3 is a block diagram showing the structure of a seamless pipe rolling mill control device according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing the locus of temperature measurement points in FIG. ■...Rolled material, 2...Rolling roll, ? ... plug, 4 ... motor, 5 ... temperature sensor, 6 ... control device, 7 ... drive device, agent patent attorney Akio Takahashi 10
Claims (1)
動される圧延ロール間を通過させることによシシームレ
スパイプを製造するシームレスパイプ圧延ラインにおい
て、圧延機の入側に設けられた圧延材の円周方向の温度
を検出する温度センサと、前記モータの回転数出力及び
温度センサの検出出力を取シ込み、前記回転数出力より
現在、圧延中の圧延材の圧延位置を推定し且つ前記温度
センサの検出出力から圧延材の圧延位置における円周方
向の変形抵抗値を算出し、該変形抵抗値から前記圧延ロ
ールの圧下量及びプラグ位置の設定値を決定し、制御信
号を出力する制御手段と、該制御信号に基づいて前記圧
延ロールの圧下量及びプラグ位置を変更する駆動手段と
を有す、ることを特徴とするシームレスパイプ圧延機制
御装置。 ２、圧延材をプラグと浩接させ且っモータにょシ回転駆
動される圧延ロール間を通過させることにヨリシームレ
スパイプを製造するシームレスノきイブ圧延ラインにお
いて、圧延機の出側に設けられた圧延材の円周方向の温
度を検出する温度センサと、前記モータの回転数出力及
び温度センサの検出出力を取り込み、前記回転数出力よ
り現在、圧延中の圧延材の圧延位置を推定し且つ前記温
度セ／すの検出出力から圧延材の圧延位置における円周
方向の温度分布を求め且つ該温度分布から圧延位置にお
ける変形抵抗値を求め、該変形抵抗値から前記圧延ロー
ルの圧下量及びプラグ位置の設定値を決定し、制御信号
を出力する制御手段と、該制御信号に基づいて前記圧延
ロールの圧下量及びプラグ位置を変更する駆動手段とを
有することを特徴とするシームレスパイプ圧延機制御装
置。[Claims] 1. In a seamless pipe rolling line that manufactures seamless pipes by bringing a rolled material into contact with a plug and passing it between rolling rolls rotated by a motor, on the entry side of the rolling mill. A temperature sensor that detects the temperature in the circumferential direction of the rolled material is provided, and the rotational speed output of the motor and the detection output of the temperature sensor are input, and the rolling position of the rolled material currently being rolled is determined from the rotational speed output. and calculating the deformation resistance value in the circumferential direction at the rolling position of the rolled material from the detection output of the temperature sensor, and determining the set value of the rolling reduction amount and plug position of the rolling roll from the deformation resistance value, and controlling. A seamless pipe rolling mill control device comprising: a control means for outputting a signal; and a drive means for changing the rolling reduction amount and plug position of the rolling roll based on the control signal. 2. A seamless pipe is installed on the exit side of the rolling mill in a seamless pipe rolling line that manufactures seamless pipe by bringing the rolled material into close contact with the plug and passing it between rolling rolls driven by a motor. A temperature sensor detects the temperature in the circumferential direction of the rolled material, the rotational speed output of the motor and the detection output of the temperature sensor are taken in, and the rolling position of the rolled material currently being rolled is estimated from the rotational speed output. The temperature distribution in the circumferential direction at the rolling position of the rolled material is determined from the detection output of the temperature sensor, the deformation resistance value at the rolling position is determined from the temperature distribution, and the reduction amount and plug position of the rolling roll are determined from the deformation resistance value. A seamless pipe rolling mill control device comprising: a control means for determining a set value of and outputting a control signal; and a drive means for changing the rolling reduction amount and plug position of the rolling roll based on the control signal. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56096507A JPS6025203B2 (en) | 1981-06-24 | 1981-06-24 | Control method for seamless pipe rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56096507A JPS6025203B2 (en) | 1981-06-24 | 1981-06-24 | Control method for seamless pipe rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58313A true JPS58313A (en) | 1983-01-05 |
| JPS6025203B2 JPS6025203B2 (en) | 1985-06-17 |
Family
ID=14167028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56096507A Expired JPS6025203B2 (en) | 1981-06-24 | 1981-06-24 | Control method for seamless pipe rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025203B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135409A (en) * | 1984-12-05 | 1986-06-23 | Nippon Kokan Kk <Nkk> | Method for presuming generating cause of wall-thickness deviation of seamless steel pipe |
| WO2006089514A1 (en) * | 2005-02-23 | 2006-08-31 | V & M Deutschland Gmbh | Method and device for monitoring the production process of hot-finished steel pipes |
| CN106216400A (en) * | 2016-08-03 | 2016-12-14 | 太原磬泓机电设备有限公司 | The external diameter roll seamless steel tube Processes and apparatus installation system more than 60mm |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50112652A (en) * | 1974-01-28 | 1975-09-04 |
-
1981
- 1981-06-24 JP JP56096507A patent/JPS6025203B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50112652A (en) * | 1974-01-28 | 1975-09-04 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135409A (en) * | 1984-12-05 | 1986-06-23 | Nippon Kokan Kk <Nkk> | Method for presuming generating cause of wall-thickness deviation of seamless steel pipe |
| WO2006089514A1 (en) * | 2005-02-23 | 2006-08-31 | V & M Deutschland Gmbh | Method and device for monitoring the production process of hot-finished steel pipes |
| CN106216400A (en) * | 2016-08-03 | 2016-12-14 | 太原磬泓机电设备有限公司 | The external diameter roll seamless steel tube Processes and apparatus installation system more than 60mm |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6025203B2 (en) | 1985-06-17 |
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