JPS6113883B2 - - Google Patents
Info
- Publication number
- JPS6113883B2 JPS6113883B2 JP56104921A JP10492181A JPS6113883B2 JP S6113883 B2 JPS6113883 B2 JP S6113883B2 JP 56104921 A JP56104921 A JP 56104921A JP 10492181 A JP10492181 A JP 10492181A JP S6113883 B2 JPS6113883 B2 JP S6113883B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- rolled material
- rolling
- rolled
- driving side
- 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
- 238000005096 rolling process Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000008186 active pharmaceutical agent Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005259 measurement 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
Description
【発明の詳細な説明】
この発明は、熱間圧延ラインで圧延される圧延
材の操作側および駆動側における温度差を検出し
て、加熱制御装置により当該温度差を補償し、温
度分布を均一にするための温度補償制御装置に関
するものである。Detailed Description of the Invention This invention detects the temperature difference between the operation side and the drive side of a rolled material rolled in a hot rolling line, compensates for the temperature difference using a heating control device, and makes the temperature distribution uniform. The present invention relates to a temperature compensation control device for controlling temperature.
圧延ラインの一例として熱間薄板圧延ラインを
とりあげ、その代表的なライン配置図を第１図に
示す。このラインでは、まず加熱炉Ａで加熱され
た材料が粗圧延機群Ｂで圧延され、搬送テーブル
Ｃを通つて粗圧延機群Ｄに導かれ、さらに最終板
厚まで圧延され、最後にコイラー部Ｅでコイリン
グされるようになつている。ところで、加熱炉Ａ
内で材料を加熱する際、温度分布が均一になるよ
うに燃焼制御されるが、実際には材料の片焼け等
が発生する。また加熱された材料が圧延、搬送さ
れる間に片冷えし、操作側および駆動側間に温度
勾配を生じさせることが多い。 A hot thin plate rolling line is taken as an example of a rolling line, and a typical line layout diagram is shown in FIG. In this line, the material heated in the heating furnace A is first rolled in the rough rolling mill group B, then guided to the rough rolling mill group D through the conveyor table C, further rolled to the final thickness, and finally rolled in the coiler section. It is designed to be coiled at E. By the way, heating furnace A
When heating the material inside, the combustion is controlled so that the temperature distribution is uniform, but in reality, the material sometimes burns on one side. Further, while the heated material is being rolled and conveyed, it often cools down on one side, creating a temperature gradient between the operating side and the driving side.
以上のような理由で発生する圧延材の操作側お
よび駆動側間の温度差は、圧延後には、両者間の
出側板厚圧となつて現われる。このことを以下に
説明する。 The temperature difference between the operating side and the driving side of the rolled material, which occurs for the reasons described above, appears as a thickness pressure on the exit side between the two after rolling. This will be explained below.
圧延荷重Ｆは材料の変形抵抗Ｋに比例し、また
変形抵抗Ｋは材料温度Ｔの関数であることが知ら
れている。 It is known that the rolling load F is proportional to the deformation resistance K of the material, and the deformation resistance K is a function of the material temperature T.
Ｆ＝Ｋ・ｆ（Ｈ，ｈ） …(1)
Ｋ＝ｇ（Ｈ，ｈ，Ｖ）exp（１／（Ｔ＋273））
…(2)
ここでＨは圧延機入側板厚、ｈは出側板厚、Ｖ
は圧延速度である。すなわち材料温度Ｔが高いほ
ど変形抵抗Ｋおよび圧延荷重Ｆは小さくなる。 F=K・f(H,h)…(1) K=g(H,h,V)exp(1/(T+273))
...(2) Here, H is the plate thickness at the entrance of the rolling machine, h is the plate thickness at the exit side, and V
is the rolling speed. That is, the higher the material temperature T, the smaller the deformation resistance K and rolling load F become.
また、よく知られているゲージメータ式より、
圧延荷重Ｆと出側板厚ｈとは比例する。 In addition, from the well-known gauge meter type,
The rolling load F and the exit plate thickness h are proportional.
ｈ＝SG＋Ｆ／MS …(3)
ここでSGはスクリユギヤツプ、MSはミルスプ
リング常数である。 h=SG+F/MS...(3) Here, SG is the screw gap and MS is the mill spring constant.
以上の関係から、圧延材の操作側および駆動側
間に温度差があるときには、第２図Ａ〜Ｄに示す
ように、操作側および駆動側の圧延機出側板厚差
が生じることになる。したがつて操作側および駆
動側の温度差をそのままにしておくと、仕上圧延
機群を出たときには、圧延材の操作側および駆動
側間における板厚差は大きくなる。 From the above relationship, when there is a temperature difference between the operating side and the driving side of the rolled material, a difference in thickness at the exit side of the rolling mill will occur between the operating side and the driving side, as shown in FIGS. 2A to 2D. Therefore, if the temperature difference between the operating side and the driving side is left unchanged, the difference in thickness between the operating side and the driving side of the rolled material will increase when the rolled material leaves the finishing rolling mill group.
この発明の目的は、粗圧延機群と仕上圧延機群
との間に、操作側および駆動側を個別に加熱でき
る加熱装置を配置し、操作側および駆動側の圧延
荷重、入および出側板厚の検出値から両者間の温
度差を演算した結果にもとづいて、この温度差を
加熱装置によつて補償するようにした温度補償装
置を提供しようとするものである。 The purpose of this invention is to arrange a heating device that can individually heat the operating side and the driving side between the rough rolling mill group and the finishing rolling mill group, and to reduce the rolling load on the operating side and the driving side, the inlet and outlet side plate thicknesses, and the like. An object of the present invention is to provide a temperature compensating device which uses a heating device to compensate for the temperature difference based on the result of calculating the temperature difference between the two from the detected value.
このような温度制御を行うことにより、圧延材
の操作側および駆動側間の温度差がなくなり、仕
上圧延機群での圧延に対する温度外乱が取除か
れ、板厚の均一化がなされる。圧延材の温度差
は、粗圧延機出側で操作側および駆動側の温度を
測定する２つの温度計を設けることによつても検
出できるが、圧延材表面のスケールの影響などに
よつて正確な材料平均温度の把握が難しく、また
コスト的にも不利である。 By performing such temperature control, there is no difference in temperature between the operation side and the drive side of the rolled material, temperature disturbances to rolling in the finishing rolling mill group are removed, and the thickness of the material is made uniform. The temperature difference in the rolled material can also be detected by installing two thermometers on the exit side of the rough rolling mill to measure the temperature on the operating side and the driving side, but the accuracy cannot be detected due to the influence of the scale on the surface of the rolled material. It is difficult to grasp the average material temperature, and it is also disadvantageous in terms of cost.
以下にこの発明の一実施例を図について説明す
る。第３図において、１は前段圧延機、２は後段
圧延機、３は圧延材搬送ライン、４および５はそ
れぞれ操作側および駆動側の加熱装置、６および
７はそれぞれ操作側および駆動側における圧延荷
重測定用のロードセルを示す。 An embodiment of the present invention will be described below with reference to the drawings. In Fig. 3, 1 is a front rolling mill, 2 is a rear rolling mill, 3 is a rolled material conveyance line, 4 and 5 are heating devices on the operating side and the driving side, respectively, and 6 and 7 are rolling mills on the operating side and the driving side, respectively. A load cell for load measurement is shown.
さて、圧延材が前段圧延機１によつて圧延され
ているとき、操作側のロードセル６の出力である
圧延荷重ＦWSと、入および出側板厚ＨWSおよびｈ
WSと、圧延速度Ｖとを用いて、温度演算装置８に
おいて操作側温度ＴWSが計算される。同様に駆動
側についても、ロードセル７の出力である圧延荷
重ＦDSと、入および出側板厚ＨDSおよびｈDSと、
圧延速度Ｖとにより、温度演算装置９において駆
動側温度ＴDSが計算される。 Now, when a rolled material is being rolled by the front rolling mill 1, the rolling load F WS which is the output of the load cell 6 on the operation side, the inlet and outlet side plate thicknesses H WS and h
Using WS and the rolling speed V, the operating side temperature TWS is calculated in the temperature calculation device 8. Similarly, regarding the drive side, the rolling load F DS which is the output of the load cell 7, the input and exit side plate thicknesses H DS and h DS ,
Based on the rolling speed V, the temperature calculation device 9 calculates the driving side temperature TDS .
ここで温度演算装置８および９における演算式
はそれぞれ下記の(4)式および(5)式で表わされる。 Here, the calculation equations in the temperature calculation devices 8 and 9 are expressed by the following equations (4) and (5), respectively.
ＦWS＝ｆ（ＨWS，ｈWS）ｇ（ＨWS，ｈWS，Ｖ）
exp（１／（ＴWS＋273） …(4)
ＦDS＝ｆ（ＨDS，ｈDS）ｇ（ＨDS，ｈDS，Ｖ）
exp（１／（ＴDS＋273） …(5)
入および出側板厚は、厚み計で測定するか、あ
るいはゲージメータ式で求めることができる。な
お(4)、(5)式の代りに、他の近似式を用いてもよ
く、あるいはテーブル牽引方式としてもよい。 F WS = f (H WS , h WS ) g (H WS , h WS , V) exp (1/(T WS +273) …(4) F DS = f (H DS , h DS ) g (H DS , h DS , V) exp (1/(T DS +273) …(5) The inlet and outlet plate thicknesses can be measured with a thickness meter or obtained using a gauge meter method. (4), (5) Instead of the equation, other approximate equations may be used, or a table traction method may be used.
さらに符号１０で示す記憶装置は、温度演算装
置８および９の出力であるＴWSおよびＴDSの差を
記憶し、この記憶された温度差は、移送装置１１
により、圧延材の搬送にしたがつて、加熱装置
４，５までトラツキングされる。１２は温度から
加熱装置リフアレンスへの変換装置であり、その
出力である補正加熱リフアレンスΔＲを、操作側
加熱装置４のリフアレンスWSから減ずることによ
り、駆動側加熱装置５のリフアレンスＲDSを求め
るように動作する。 Furthermore, a storage device indicated by the reference numeral 10 stores the difference between T WS and T DS which are the outputs of the temperature calculating devices 8 and 9, and this stored temperature difference is stored in the transfer device 11.
As the rolled material is transported, it is tracked to the heating devices 4 and 5. Reference numeral 12 denotes a conversion device from temperature to heating device reference, and by subtracting the corrected heating reference ΔR, which is the output thereof, from the reference WS of the operation side heating device 4, the reference RDS of the driving side heating device 5 is obtained. Operate.
このようにして圧延材の位置にしたがつて補正
加熱リフアレンスΔＲを補正して各加熱装置４，
５に出力を与えることにより、圧延材の操作側お
よび駆動側間の温度差（ΔＴ＝ΔＴDS−ＴWS）は
長手方向に対してすべてゼロに制御され、後段の
圧延機での圧延において温度外乱が取除かれる。 In this way, the corrected heating reference ΔR is corrected according to the position of the rolled material, and each heating device 4,
5, the temperature difference between the operating side and the driving side of the rolled material (ΔT = ΔT DS - T WS ) is controlled to zero in the longitudinal direction, and the temperature difference during rolling in the subsequent rolling mill is controlled to zero. Disturbances are removed.
以上のようにこの発明によれば、操作側および
駆動側における圧延荷重と、圧延機の入および出
側板厚とにもとづいて圧延材の温度勾配を演算
し、この演算結果にもとづいて、圧延材の操作側
および駆動側を別個に加熱できる加熱装置を制御
することによつて圧延材の温度補償が行われる。
したがつて圧延材の温度はその操作側および駆動
側間において均一になり、常に一定の板厚の圧延
製品が得られる。 As described above, according to the present invention, the temperature gradient of the rolled material is calculated based on the rolling loads on the operating side and the driving side and the plate thicknesses at the entrance and exit sides of the rolling mill, and based on the calculation results, the temperature gradient of the rolled material is Temperature compensation of the rolled material is carried out by controlling a heating device which can separately heat the operating side and the drive side of the rolling stock.
Therefore, the temperature of the rolled material becomes uniform between the operating side and the driving side, and a rolled product with a constant thickness is always obtained.
第１図はこの発明が適用される圧延ラインのフ
ローシート、第２図Ａ〜Ｄは圧延材の操作側およ
び駆動側間における材料温度、変形抵抗、圧延荷
重および出側板厚の分布の一例を示すグラフ、第
３図はこの発明の一実施例による温度補償制御制
御装置のブロツク図である。
１……前段圧延機、２……後段圧延機、３……
圧延材搬送ライン、４，５……加熱装置、６，７
……ロードセル、８，９……温度演算装置、１０
……記憶装置、１１……移送装置、１２……変換
装置。なお、図中同一符号は同一又は相当部分を
示す。
Fig. 1 is a flow sheet of a rolling line to which the present invention is applied, and Figs. 2 A to D show an example of the distribution of material temperature, deformation resistance, rolling load, and exit side plate thickness between the operation side and drive side of the rolled material. The graph shown in FIG. 3 is a block diagram of a temperature compensation control device according to an embodiment of the present invention. 1... Front rolling mill, 2... Back rolling mill, 3...
Rolled material conveyance line, 4, 5... Heating device, 6, 7
...Load cell, 8, 9...Temperature calculation device, 10
... Storage device, 11 ... Transfer device, 12 ... Conversion device. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
延荷重を検出するロードセルと、圧延荷重、出お
よび入側板厚の検出値にもとづいて圧延材の操作
側および駆動側間における温度勾配を演算する温
度演算装置と、上記温度勾配を示す信号を上記圧
延材の長手方向に記憶し、上記圧延材の搬送にと
もなつてトラツキングする移送装置と、上記信号
にもとづいて操作側および駆動側間の温度勾配を
なくすように上記圧延材を加熱する加熱装置とを
備えた圧延材の温度補償制御装置。1 A load cell that detects the rolling load on the operating side and the driving side of the front rolling mill, and a temperature calculation that calculates the temperature gradient between the operating side and the driving side of the rolled material based on the rolling load and the detected values of the exit and entry side plate thicknesses. a transfer device that stores a signal indicating the temperature gradient in the longitudinal direction of the rolled material and tracks the rolled material as it is transported; A temperature compensation control device for a rolled material, comprising: a heating device that heats the rolled material so as to eliminate the temperature of the rolled material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56104921A JPS586721A (en) | 1981-07-02 | 1981-07-02 | Temperature compensation controller for rolling material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56104921A JPS586721A (en) | 1981-07-02 | 1981-07-02 | Temperature compensation controller for rolling material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS586721A JPS586721A (en) | 1983-01-14 |
| JPS6113883B2 true JPS6113883B2 (en) | 1986-04-16 |
Family
ID=14393563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56104921A Granted JPS586721A (en) | 1981-07-02 | 1981-07-02 | Temperature compensation controller for rolling material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586721A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4675826A (en) * | 1984-08-06 | 1987-06-23 | Granco-Clark, Inc. | Temperature control system |
| JPS61249621A (en) * | 1985-04-30 | 1986-11-06 | Mitsubishi Electric Corp | Heating control device |
| JPH06104248B2 (en) * | 1985-09-05 | 1994-12-21 | 三菱電機株式会社 | Plate temperature control device for plate rolling with plate thickness change |
| JP4915376B2 (en) * | 2008-03-24 | 2012-04-11 | 住友金属工業株式会社 | Rolling order determination method and rolling order determination apparatus for hot rolling, and hot rolled steel sheet manufacturing method and manufacturing apparatus |
| CN103861876B (en) * | 2014-03-17 | 2016-06-15 | 莱芜钢铁集团有限公司 | Steel billet Edge Heating system and method |
| JP6809488B2 (en) * | 2018-01-18 | 2021-01-06 | Ｊｆｅスチール株式会社 | Hot-rolled rough rolling method, hot-rolled rough rolling equipment, hot-rolled steel sheet manufacturing method, and hot-rolled steel sheet manufacturing equipment |
-
1981
- 1981-07-02 JP JP56104921A patent/JPS586721A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS586721A (en) | 1983-01-14 |
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