CN112139258A - Control method of side guide plate of hot rolling coiler - Google Patents
Control method of side guide plate of hot rolling coiler Download PDFInfo
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- CN112139258A CN112139258A CN201910563577.6A CN201910563577A CN112139258A CN 112139258 A CN112139258 A CN 112139258A CN 201910563577 A CN201910563577 A CN 201910563577A CN 112139258 A CN112139258 A CN 112139258A
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- side guide
- guide plate
- opening
- opening degree
- hot rolling
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- 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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
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Abstract
The invention discloses a method for controlling a side guide plate of a hot rolling coiler, which comprises the following steps: first, threading: adjusting the opening degree of the side guide plate to a first opening degree S1(ii) a Second, head coiling stage: adjusting the opening degree of the side guide plate to a second opening degree S2(ii) a Third, middle coiling stage: the opening degree of the side guide plate is adjusted to be reduced step by step, the side guide plate and the strip steel are monitored through the video monitoring unit, when the side guide plate and the edge of the strip steel are rubbed to generate sparks, the control unit controls the opening degree adjusting mechanism of the side guide plate to stop reducing the opening degree of the side guide plate, and the opening degree of the side guide plate at the moment is recorded as an edge searching opening degree S4Then the opening degree of the side guide plate is adjusted to a third opening degree S3(ii) a Fourth, tail coiling stage: adjusting the opening of the side guide plate to the edge searching opening S4. The control method of the side guide plate of the hot rolling coiler ensures the coiling quality, reduces the abrasion of the side guide plate, reduces the replacement frequency and improves the operation efficiency.
Description
Technical Field
The invention relates to the technical field of hot rolling, in particular to a control method of a side guide plate of a hot rolling coiler.
Background
The coiler is an important apparatus of a hot rolling line for coiling a hot rolled strip into a steel coil. The coiler is located behind the finishing mill group and is the last process of the hot continuous rolling production line. Referring to fig. 1 and 2, a strip 1 is transported from the finishing train to the coiler train by a roller table 2 and enters pinch rolls 4 centered by side guides 3. The pinch rolls deliver the strip head to the spool 5. After the strip steel 1 is wound on the winding drum 5, tension is applied to the strip steel to ensure that the winding quality is qualified.
After the strip steel is coiled into steel coils by the coiling machine, the inner coil layers of some steel coils protrude towards one side. When the projections exceed a certain level, they are referred to as tower defects. The tower-shaped defect is generally caused by the camber of the head of the strip steel or the poor centering function of a side guide plate of a coiling machine. Some users have very stringent tower defects, exceeding the user's tower requirements, and must be rewound for repair in the finishing operation, which results in a loss of quality cost.
The side winding layers of the steel coil with good quality are orderly. Because the coiling tension and the control of the side guide plate are poor, the coiling layers on the side surfaces of some steel coils are uneven, and the steel coils are called as staggered-layer defects. The perception of severe misfeeding defects also necessitates rewinding repairs in the finishing process, also resulting in a loss of quality cost.
The prior art side guide plate control method comprises the following steps:
(1) threading phase
In order to prevent the head of the strip steel from being clamped by the side guide plates to cause a steel clamping accident, the side guide plates are preset to have an opening S1 according to the width of the strip steel before the head of the strip steel reaches the side guide plates.
S1＝B+W+B1
Wherein S1In order to obtain the opening degree of the side guide plate in the threading stage,
b is the width of the strip steel,
w is the short stroke opening of the side guide plate,
B1is the standby added value.
(2) The coiling stage that the head part bites into the pinch roll until the tail part enters the pinch roll
At the moment when the head of the strip steel bites into the pinch roll, the short stroke of the side guide plate is rapidly changed into 0 to prevent tower-shaped defects. And standby added value B1Then changes to implement the additional value B10. The opening degree of the side guide plates is changed to S2 until the tail of the strip steel enters a pinch roll and the coiling is finished.
S10＝B+B10
S10Opening degree of side guide plate in coiling stage
B is the width of the strip steel
B10For enforcing additional value
Due to the difference of the abrasion of the side guide plates and the difference of the varieties and specifications of the strip steel, an operator needs to judge whether the side guide plates clamp the strip steel or not according to sparks generated by the friction between the side guide plates and the edge parts of the strip steel, so that the execution additional value B is continuously adjusted10. If the tail portion does not clamp the strip, a fault in the layers may occur.
In addition, the existing control method is adopted, the head of the strip steel is bitten into the pinch roll until the tail of the strip steel enters the pinch roll, and the strip steel is always clamped by the side guide plates. The side guide plate and the side guide plate rub for a long time, the abrasion is very quick, and the side guide plate needs to be replaced every day. The machine must be stopped when being replaced, and the working efficiency is influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a method for controlling a side guide plate of a hot rolling coiler, which reduces the quality defects related to the coiler, reduces the abrasion of the side guide plate and prolongs the replacement period of the guide plate.
In order to achieve the above object, a method for controlling a side guide of a hot rolling coiler according to the present invention comprises:
first, threading: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to a first opening S1，
S1＝B+W+B1，
Wherein B is the width of the strip steel, W is the short stroke opening of the side guide plate, B1Is the standby added value;
second, head coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to a second opening S2，
S2＝B+B2，
Wherein B is2Is the additional value of the head;
third, middle coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to be reduced step by step, and the video monitoring unit is used for aligning the side guideThe plate and the strip steel are monitored, when it is monitored that sparks are generated due to friction between the side guide plate and the edge of the strip steel, the control unit controls the side guide plate opening adjusting mechanism to stop reducing the opening of the side guide plate, and the opening of the side guide plate at the moment is recorded as an edge searching opening S4Then the opening degree of the side guide plate is adjusted to a third opening degree S3，
S3＝S4+B3，
Wherein B is3Is the additional value of the middle part;
fourth, tail coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to the edge searching opening S4。
Preferably, when the control unit controls the side guide opening degree adjusting mechanism to adjust the opening degree of the side guide to be gradually reduced, when the opening degree of the side guide is reduced to the edge searching limit value SminThe control unit controls the side guide plate opening regulating mechanism to stop reducing the opening of the side guide plate, and records the opening S of the edge searching at the moment4Let S4＝Smin。
Preferably, the limit seek value Smin＝B-BminIn which B isminIs a lower limit added value, a lower limit added value BminThe value range of (A) is 0-25 mm.
Preferably, the standby additional value B1The value range of (A) is 20-60 mm.
Preferably, the head additional value B2The value range of (1) is 5-25 mm.
Preferably, the middle additional value B3The value range of (A) is 2-10 mm.
Preferably, the control unit in the middle coiling stage controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to be gradually reduced, the value range of each reduction is 2-10mm, and the adjustment interval of each stage is 1-5 seconds.
According to the control method of the side guide plate of the hot rolling coiler, differential side guide plate position control is adopted at different coiling stages, the coiling quality is ensured, the side guide plate abrasion is reduced, the replacement frequency is reduced, and the operation efficiency is improved.
Drawings
FIG. 1 is a schematic view of the main equipment of a hot rolling coiler;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view showing the opening degree of the side guides at different stages in the method for controlling the side guides of the hot rolling coiler according to the present invention.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 3, the method for controlling the side guides of the hot rolling coiler according to the present invention is as follows:
(1) a threading stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to a first opening S1，
S1＝B+W+B1，
Wherein S1Is the first opening degree, namely the opening degree of the side guide plate in the threading stage,
b is the width of the strip steel,
w is the short stroke opening of the side guide plate,
B1is the standby added value;
the strip threading stage is a stage from the head of the strip steel to the finish rolling tail frame until the head of the strip steel is bitten into a pinch roll. Referring to part a of fig. 3, the side guides are mainly used for guiding at this stage, i.e., the first opening S1The width of the side guide plate is far larger than that of the strip steel, and the abrasion of the side guide plate is very small. Standby additional value B1The value range of (A) is 20-60 mm.
(2) A head coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to a second opening S2，
S2＝B+B2，
Wherein S2The second opening degree, i.e. the opening degree of the side guides during the head coiling stage
B is the width of the strip steel,
B2is the additional value of the head;
the head coiling stage refers to that the head of the strip steel bites into a pinch roll until the tension of a winding drum is established. See section b of FIG. 3At the stage, the side guide plate mainly plays a role in correcting the deviation, and the opening degree of the side guide plate is reduced to correct the deviation of the strip steel. But the opening degree of the side guide plate at the stage is still larger than the width of the strip steel, and the additional value of the head part is B2The value range of (1) is 5-25 mm.
(3) And a middle coiling stage: the control unit controls the opening adjusting mechanism of the side guide plate to adjust the opening of the side guide plate to be reduced step by step, the video monitoring unit monitors the side guide plate and the strip steel, when the side guide plate and the edge of the strip steel rub to generate sparks, the control unit controls the opening adjusting mechanism of the side guide plate to stop reducing the opening of the side guide plate, and records the opening of the side guide plate at the moment as the opening S of the edge searching4Then the opening degree of the side guide plate is adjusted to a third opening degree S3，
S3＝S4+B3，
Wherein S3Is the third opening degree, namely the opening degree of the side guide plate at the middle coiling stage,
S4in order to find the opening degree of the edge,
B3is the additional value of the middle part;
middle added value B3The value range of (A) is 2-10 mm.
The side guide plate and the strip steel are monitored through a video monitoring unit, the video monitoring unit comprises a camera, a video image analysis system and the like, and the monitoring technology adopts an image acquisition and image analysis comparison method in the prior art, which is not repeated herein.
The opening adjusting mechanism of the side guide plate adopts a hydraulic servo system and a hydraulic cylinder in the prior art, and the hydraulic cylinder pushes the side guide plate to adjust the opening.
And the middle coiling stage is a stage from tension establishment to the throwing of the tail part of the strip steel from the finish rolling tail frame. Referring to part c of fig. 3, the winding drum is torque-controlled in this stage, the winding drum and the finishing mill stand form stable tension, the winding shape is mainly ensured by the tension, and the side guide plate only plays a role in auxiliary centering. During auxiliary centering, although the side guide plates do not need to clamp the strip steel, if the side guide plates are far away from the strip steel, the fault of staggered layers also occurs. In order to make the side guide plate exert a good auxiliary centering effect, edge searching control must be performed firstly.The control unit controls the opening of the side guide plates to be gradually reduced, namely the side guide plates start to seek edge control, and when the side guide plates rub with the edge of the strip steel to generate sparks, edge seeking is finished. Opening a little after the edge searching is finished, namely increasing the middle added value B3The width of the side guide plate ensures the roll shape and reduces the abrasion of the side guide plate.
The control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to be reduced step by step, the value range of each reduction is 2-10mm, and the adjusting interval of each step is 1-5 seconds.
When the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to be gradually reduced, when the opening of the side guide plate is reduced to the limit value S for searching the edgeminThe video monitoring unit does not monitor that sparks are generated by friction between the side guide plate and the edge of the strip steel, the control unit controls the side guide plate opening adjusting mechanism to stop reducing the opening of the side guide plate, and the edge searching limit value S is setminRecord as the edge-seeking opening S at this time4At this time Smin＝S4。
Smin＝B-Bmin
Wherein B isminIs a lower limit added value, a lower limit added value BminThe value range of (2) is 0-25mm, and an edge-searching limit value S is setminThe purpose of the device is to prevent the side guide plates from excessively clamping the strip steel caused by environmental interference such as fog or equipment failure.
(4) And a tail coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to the edge searching opening S4。
And the tail coiling stage is a stage of throwing the tail of the strip steel out of the finish rolling end rack until the tail of the strip steel enters a pinch roll, and the strip steel is completely coiled after the stage. Referring to part d of fig. 3, the coiling tension at this stage is mainly composed of a winding drum and a pinch roll, and the strip steel on the roller table is not tensioned, so that the strip steel needs to be clamped by a side guide plate.
According to the control method of the side guide plate of the hot rolling coiler, the video monitoring unit is used for monitoring sparks generated by friction between the side guide plate and the edge of the strip steel, and when the sparks are monitored, a monitoring signal is sent to the control unit, so that whether the side guide plate clamps the strip steel or not is judged through the video monitoring unit, the influence of abrasion of the guide plate is avoided, and intelligent control of the side guide plate is realized.
Compared with the prior art in which the pressure of the side guide plate is adopted for control, the control method adopts position control in the whole process, and the phenomenon that the thin strip steel is easy to arch upwards after being subjected to pressure is avoided, so that the roll defect is avoided.
And in addition, differentiated side guide plate position control is adopted in different coiling stages, so that the aims of reducing the abrasion of the side guide plates, reducing the replacement frequency and improving the operation rate are fulfilled.
As described above, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings. It should be understood that the invention is not intended to be limited to these specific details. Equivalent or similar changes in the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the invention, which shall also fall within the scope of the protection defined by the claims appended hereto.
Claims (7)
1. A method for controlling a side guide plate of a hot rolling coiler is characterized by comprising the following steps:
first, threading: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to a first opening S1，
S1＝B+W+B1，
Wherein B is the width of the strip steel, W is the short stroke opening of the side guide plate, B1Is the standby added value;
second, head coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to a second opening S2，
S2＝B+B2，
Wherein B is2Is the additional value of the head;
third, middle coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to be gradually reduced, andthe side guide plates and the strip steel are monitored through the video monitoring unit, when the side guide plates and the edge of the strip steel rub to generate sparks, the control unit controls the side guide plate opening adjusting mechanism to stop reducing the opening of the side guide plates, and records the opening of the side guide plates at the moment as an edge searching opening S4Then the opening degree of the side guide plate is adjusted to a third opening degree S3，
S3＝S4+B3，
Wherein B is3Is the additional value of the middle part;
fourth, tail coiling stage: the control unit controls the side guide plate opening adjusting mechanism to adjust the opening of the side guide plate to the edge searching opening S4。
2. The method of controlling the side guides of a hot rolling coiler according to claim 1, wherein when the control unit controls the side guide opening degree adjustment mechanism to adjust the opening degree of the side guides to decrease stepwise, when the opening degree of the side guides decreases to the limit value S for seek edgeminThe control unit controls the side guide plate opening regulating mechanism to stop reducing the opening of the side guide plate, and records the opening S of the edge searching at the moment4Let S4＝Smin。
3. The method of controlling a sideguard of a hot rolling coiler according to claim 2, characterized in that the limit value of hunting Smin＝B-BminIn which B isminIs a lower limit added value, a lower limit added value BminThe value range of (A) is 0-25 mm.
4. The method of controlling a sideguard of a hot rolling coiler according to claim 1, characterized in that said standby additional value B1The value range of (A) is 20-60 mm.
5. The method of controlling a sideguard of a hot rolling coiler according to claim 1, characterized in that the head added value B is2The value range of (1) is 5-25 mm.
6. The method of controlling a sideguard of a hot rolling coiler according to claim 1, characterized in that the additional value of the middle part B3The value range of (A) is 2-10 mm.
7. The method for controlling the side guides of a hot rolling coiler according to claim 1, wherein the control unit controls the side guide opening adjusting mechanism to adjust the opening of the side guides to be reduced step by step in the middle coiling stage, and the reduction of each step is in the range of 2-10mm and is performed at intervals of 1-5 seconds.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001047120A (en) * | 1999-08-06 | 2001-02-20 | Ishikawajima Harima Heavy Ind Co Ltd | Device and method and controlling hydraulic side guide of rolled stock |
| CN102989839A (en) * | 2011-09-16 | 2013-03-27 | 宝山钢铁股份有限公司 | Hot continuous rolling coiler parallel side guide plate control method |
| CN103801566A (en) * | 2013-12-26 | 2014-05-21 | 宝钢发展有限公司 | Control method for reducing edge faults of hot rolled steel plate in line rolling process |
| CN104525575A (en) * | 2014-12-12 | 2015-04-22 | 湖南华菱涟源钢铁有限公司 | Hot rolled strip steel coiler side guide deviation correction control method |
| CN105817485A (en) * | 2015-01-07 | 2016-08-03 | 宝山钢铁股份有限公司 | Method for controlling hot rolling coiling scratching defects |
| CN106807761A (en) * | 2015-11-30 | 2017-06-09 | 宝山钢铁股份有限公司 | A kind of new plate rolling side guide control method of hot-strip |
| CN108115002A (en) * | 2016-11-30 | 2018-06-05 | 宝山钢铁股份有限公司 | The method for improving tail part of band steel scroll quality |
-
2019
- 2019-06-26 CN CN201910563577.6A patent/CN112139258B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001047120A (en) * | 1999-08-06 | 2001-02-20 | Ishikawajima Harima Heavy Ind Co Ltd | Device and method and controlling hydraulic side guide of rolled stock |
| CN102989839A (en) * | 2011-09-16 | 2013-03-27 | 宝山钢铁股份有限公司 | Hot continuous rolling coiler parallel side guide plate control method |
| CN103801566A (en) * | 2013-12-26 | 2014-05-21 | 宝钢发展有限公司 | Control method for reducing edge faults of hot rolled steel plate in line rolling process |
| CN104525575A (en) * | 2014-12-12 | 2015-04-22 | 湖南华菱涟源钢铁有限公司 | Hot rolled strip steel coiler side guide deviation correction control method |
| CN105817485A (en) * | 2015-01-07 | 2016-08-03 | 宝山钢铁股份有限公司 | Method for controlling hot rolling coiling scratching defects |
| CN106807761A (en) * | 2015-11-30 | 2017-06-09 | 宝山钢铁股份有限公司 | A kind of new plate rolling side guide control method of hot-strip |
| CN108115002A (en) * | 2016-11-30 | 2018-06-05 | 宝山钢铁股份有限公司 | The method for improving tail part of band steel scroll quality |
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