JPH02127904A - Method for controlling sheet thickness in cold rolling mill of metal sheet - Google Patents
Method for controlling sheet thickness in cold rolling mill of metal sheetInfo
- Publication number
- JPH02127904A JPH02127904A JP63278119A JP27811988A JPH02127904A JP H02127904 A JPH02127904 A JP H02127904A JP 63278119 A JP63278119 A JP 63278119A JP 27811988 A JP27811988 A JP 27811988A JP H02127904 A JPH02127904 A JP H02127904A
- Authority
- JP
- Japan
- Prior art keywords
- stand
- sheet
- sheet thickness
- thickness
- 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.)
- Pending
Links
- 238000005097 cold rolling Methods 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 12
- 238000005096 rolling process Methods 0.000 abstract description 17
- 230000015556 catabolic process Effects 0.000 abstract 2
- 238000003466 welding Methods 0.000 description 7
- 238000000137 annealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 102100036601 Aggrecan core protein Human genes 0.000 description 1
- 108091006419 SLC25A12 Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、金属板の冷間圧延機における板厚制御方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for controlling the thickness of a metal plate in a cold rolling mill.
［従来技術］
従来の金属板の冷間圧延機における板厚制御方法におい
ては、圧延原板の溶接部を圧延する際に、圧延機に装着
されている板厚制御手段によって、圧延を行っていた。[Prior art] In a conventional plate thickness control method in a metal plate cold rolling mill, when rolling a welded part of a rolled original plate, rolling was carried out by a plate thickness control means installed in the rolling mill. .
第２図は溶接部通過時の圧延機の圧延速度、圧延各部板
厚の実測チャートである。本例では４スタンド冷間圧延
機によって圧延が行われている。FIG. 2 is an actual measurement chart of the rolling speed of the rolling mill and the plate thickness of each rolled part when passing through the welding zone. In this example, rolling is performed using a four-stand cold rolling mill.
溶接部通過時には第４スタンド速度すなわち圧延速度は
減速され、原板厚ＨＯ，第１スタンド板厚１１１、第２
スタンド板厚Ｈ２，第４スタンド板厚Ｈ４は図に示すよ
うに大きく変動する。When passing through the weld zone, the fourth stand speed, that is, the rolling speed is reduced, and the original plate thickness HO, the first stand plate thickness 111, and the second stand plate thickness are
The stand plate thickness H2 and the fourth stand plate thickness H4 vary greatly as shown in the figure.
［発明が解決しようとする課題］
従来の圧延原板の溶接部の圧延においては、溶接部め圧
延時間が非常に短い（１０〜２０ ｍ５ｅｃ）ので、圧
延機に装着されている板厚制御手段では溶接部における
圧延原板の急激な板厚変動および又は材質の変動に追従
できず、基準板厚より薄く圧延され、この金属板が連続
焼鈍のような次工程において使用される場合に前記溶接
部が破断するなどの問題点があった。[Problems to be Solved by the Invention] In the conventional rolling of the welded part of a rolled original plate, the rolling time for the welded part is very short (10 to 20 m5ec), so the thickness control means installed in the rolling mill cannot control the welded part. If the welded part is unable to follow sudden changes in the thickness and/or material quality of the rolled original sheet and is rolled thinner than the standard thickness, and this metal sheet is used in the next process such as continuous annealing, the welded part There were problems such as breakage.
［課題を解決するための手段］
この発明に係わる金属板の冷間圧延機における制御方法
は、圧延原板の溶接部の精密追跡を行い、前記溶接部が
前記冷間圧延機によって圧延される際に、基準板厚より
厚くなように制御する金属板の冷間圧延機における制御
方法である。[Means for Solving the Problems] A control method for a cold rolling mill for metal sheets according to the present invention involves precisely tracking a welded portion of a rolled original sheet, and when the welded portion is rolled by the cold rolling mill. This is a control method in a cold rolling mill for metal plates, which controls the thickness of the metal plate to be thicker than the standard thickness.
［作用］
この発明における金属板の冷間圧延機における制御方法
によれば、圧延原板の溶接部が前記溶接部が前記冷間圧
延機によって圧延される際に、基準板厚より厚くなよう
に制御される。従って、たとえ板厚変動が発生しても、
板厚が異常に薄くなることがなく、次工程での板破断の
発生を防止できる。[Function] According to the control method for a metal plate cold rolling mill of the present invention, the welded portion of the rolled original sheet is made thicker than the standard plate thickness when the welded portion is rolled by the cold rolling mill. controlled. Therefore, even if plate thickness variations occur,
The plate thickness does not become abnormally thin, and the occurrence of plate breakage in the next process can be prevented.
［実施例］
第１図は本発明の１実施例の制御系を示す図である。以
下、図面にしたがって説明する。[Embodiment] FIG. 1 is a diagram showing a control system according to an embodiment of the present invention. This will be explained below with reference to the drawings.
ｆａｔ金属板１の溶接部２は溶接部検出器３を通過後、
精密追跡される。After the welded part 2 of the fat metal plate 1 passes through the welded part detector 3,
Precisely tracked.
（ｂ）溶接部３が第１スタンド４に到着時に、第１スタ
ンドフイードフオワードＡＧＣ（速度制御）１６は第１
スタンドモーター８の速度を増加することによって、溶
接部２の板厚を増加するよう指令を発する。これによっ
て第１スタンド４通過後の溶接部２の板厚は増加する。(b) When the welding part 3 arrives at the first stand 4, the first stand feed forward AGC (speed control) 16
By increasing the speed of the stand motor 8, a command is issued to increase the thickness of the welded portion 2. As a result, the plate thickness of the welded portion 2 after passing through the first stand 4 increases.
この際、前記溶接部２が第１スタンド板厚計１１に到達
すると、この信号が第１モニター１４にフィードバック
され、第１モニター１４は信号処理後、第１スタンドＢ
Ｉ ５ＲＡ−ＡＧＣ（圧下制御）１５に指令を発し、
第１スタンドＢ Ｉ ５ＲＡ−ＡＧＣ１５は第１スタン
ド圧延中の板厚を減少するように作用するので、溶接部
２が第１スタンド４と第２スタンド５の間を通過してい
る間は第１モニター１４の機能を停止する。第１スタン
ド４と第２スタンド５の間における溶接部３の精密追跡
は、第１スタンドモーター８によって行われる。但し第
２スタンド以降の板厚制御系は通常どうり作動させる。At this time, when the welded part 2 reaches the first stand plate thickness gauge 11, this signal is fed back to the first monitor 14, and the first monitor 14 processes the signal and then the first stand B
I issue a command to 5RA-AGC (down control) 15,
Since the first stand B I 5RA-AGC 15 acts to reduce the thickness of the plate during rolling on the first stand, while the welded portion 2 is passing between the first stand 4 and the second stand 5, the The function of the monitor 14 is stopped. Precise tracking of the weld 3 between the first stand 4 and the second stand 5 is performed by the first stand motor 8 . However, the plate thickness control system from the second stand onwards operates as usual.
ＦＣ＋溶接部２が第２スタンド５に到着後、第２スタン
ド５から第３スタンド６の間の精密追跡は第２スタンド
モーター９によって行われる。溶接部２が第２スタンド
板厚計１２に到着した時に、溶接部２の板厚が定常圧延
に較べて増加しているので、この信号は第２スタンドフ
イードフオワードＡＧＣ１８および第２モニター１７に
伝達され、第２スタンドフイードフオワードＡＧＣ１８
は第２スタンドモーター９の速度を減少するように作用
し、また第２モニター１７においては信号処理後、第１
スタンドモーター８の速度を減少する様に作用する。し
たがって、溶接部以外の部分に影響を与えるので第２モ
ニター１７の機能を停止する。ただし第２スタンド５以
外のスタンドの制御系については通常どうり作動させる
。After the FC+ welding part 2 arrives at the second stand 5, precision tracking between the second stand 5 and the third stand 6 is performed by the second stand motor 9. When the welded part 2 reaches the second stand plate thickness gage 12, the thickness of the welded part 2 has increased compared to the steady rolling, so this signal is sent to the second stand feed forward AGC 18 and the second monitor 17. and the second stand feed forward AGC18
acts to reduce the speed of the second stand motor 9, and in the second monitor 17, after signal processing, the speed of the first stand motor 9 is reduced.
It acts to reduce the speed of the stand motor 8. Therefore, since parts other than the welded part are affected, the function of the second monitor 17 is stopped. However, the control systems of the stands other than the second stand 5 are operated normally.
（ｄｌ以下第３スタンド６、第４スタンド７についても
同様の操作を行うが溶接部２が第４スタンド板厚計１３
に到着時に第４スタンドモニター１９の機能を停止して
、信号が第３スタンドモーター１０に伝達されるのを防
止する。(The same operation is performed for the third stand 6 and the fourth stand 7 below dl, but the welding part 2 is the fourth stand plate thickness gauge 13.
Upon arrival, the function of the fourth stand monitor 19 is stopped to prevent the signal from being transmitted to the third stand motor 10.
以上一連の操作によって、第１スタンド４において形成
した溶接部２の板厚増加は最終スタンド圧延まで保持さ
れ、増厚溶接部を持つ冷延板が得られる。Through the series of operations described above, the increase in thickness of the welded portion 2 formed in the first stand 4 is maintained until the final stand rolling, and a cold rolled sheet having an increased thickness welded portion is obtained.
このような対策を講じた結果、溶接部の強度が増大して
連続焼鈍時における板破断が皆無となつた。As a result of taking such measures, the strength of the welded part increased and there was no plate breakage during continuous annealing.
［発明の効果コ
以上のように１本発明によれば冷間圧延において、溶接
部の板厚を増加せしめたので、次工程における板破断が
皆無となった。[Effects of the Invention] As described above, according to the present invention, the plate thickness at the welded portion is increased during cold rolling, so that there is no plate breakage in the next process.
第１図は本発明の制御系を示す図、第２図は溶接部通過
時の圧延機の圧延速度、圧延各部板厚の実測チャート図
である。
１・・・金属板、２・・・溶接部、３・・・溶接部検出
器、４・・・第１スタンド、５・・・第２スタンド、６
・・・第３スタンド、７・・・第４スタンド、８・・・
第１スタンドモーター、９・・・第２スタンドモーター
、１０・・・第３スタンドモーター１１・・・第１スタ
ンド板厚計、１２・・・第２スタンド板厚計、１３・・
・第４スタンド板厚計、１４・・・第１モニター １５
・・・第１スタンドＢＩＳＲＡ−ＡＧＣ１１６・・・第
１スタンドフイードフオワードＡＧＣ１１７・・・第２
モニター、１８・・・第２スタンドフイ
ドフオワ
ドＡＧＣ１
９・・・第４スタンド
モニタFIG. 1 is a diagram showing the control system of the present invention, and FIG. 2 is an actual measurement chart of the rolling speed of the rolling mill and the plate thickness of each rolled part when passing through the welding zone. DESCRIPTION OF SYMBOLS 1... Metal plate, 2... Welding part, 3... Welding part detector, 4... First stand, 5... Second stand, 6
...3rd stand, 7...4th stand, 8...
1st stand motor, 9... 2nd stand motor, 10... 3rd stand motor 11... 1st stand thickness gauge, 12... 2nd stand thickness gauge, 13...
・4th stand plate thickness gauge, 14...1st monitor 15
...1st stand BISRA-AGC116...1st stand feed forward AGC117...2nd stand
Monitor, 18...2nd stand display AGC1 9...4th stand monitor
Claims (1)
板の溶接部の精密追跡を行い、前記溶接部が前記冷間圧
延機によって圧延される際に、基準板厚より厚くなよう
に制御することを特徴とする金属板の冷間圧延機におけ
る制御方法。In a control method for a cold rolling mill for a metal plate, a welded part of a rolled original plate is precisely tracked, and the welded part is controlled to be thicker than a reference plate thickness when rolled by the cold rolling mill. A control method for a cold rolling mill for metal sheets, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63278119A JPH02127904A (en) | 1988-11-02 | 1988-11-02 | Method for controlling sheet thickness in cold rolling mill of metal sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63278119A JPH02127904A (en) | 1988-11-02 | 1988-11-02 | Method for controlling sheet thickness in cold rolling mill of metal sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02127904A true JPH02127904A (en) | 1990-05-16 |
Family
ID=17592882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63278119A Pending JPH02127904A (en) | 1988-11-02 | 1988-11-02 | Method for controlling sheet thickness in cold rolling mill of metal sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02127904A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0738548A1 (en) * | 1995-04-18 | 1996-10-23 | Kawasaki Steel Corporation | Hot-rolling method of steel piece joint during continuous hot-rolling |
| WO2005039790A3 (en) * | 2003-10-21 | 2005-08-11 | David Teng Pong | Control of hot rolled product cross section under localized temperature disturbances |
| CN100411760C (en) * | 2005-05-20 | 2008-08-20 | 鞍山钢铁集团公司 | Dynamic thickening rolling process of controlling break of cold rolled thin strip steel |
-
1988
- 1988-11-02 JP JP63278119A patent/JPH02127904A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0738548A1 (en) * | 1995-04-18 | 1996-10-23 | Kawasaki Steel Corporation | Hot-rolling method of steel piece joint during continuous hot-rolling |
| US5720196A (en) * | 1995-04-18 | 1998-02-24 | Kawasaki Steel Corporation | Hot-rolling method of steel piece joint during continuous hot-rolling |
| WO2005039790A3 (en) * | 2003-10-21 | 2005-08-11 | David Teng Pong | Control of hot rolled product cross section under localized temperature disturbances |
| JP2007508944A (en) * | 2003-10-21 | 2007-04-12 | ポン，デイヴィッド，トン | Method for controlling the cross section of a hot-rolled product under local temperature disturbances |
| AU2004283164B2 (en) * | 2003-10-21 | 2010-07-01 | David Teng Pong | Control of hot rolled product cross section under localized temperature disturbances |
| CN100411760C (en) * | 2005-05-20 | 2008-08-20 | 鞍山钢铁集团公司 | Dynamic thickening rolling process of controlling break of cold rolled thin strip steel |
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