CN215543847U - Strip steel position correcting device - Google Patents
Strip steel position correcting device Download PDFInfo
- Publication number
- CN215543847U CN215543847U CN202121013319.XU CN202121013319U CN215543847U CN 215543847 U CN215543847 U CN 215543847U CN 202121013319 U CN202121013319 U CN 202121013319U CN 215543847 U CN215543847 U CN 215543847U
- Authority
- CN
- China
- Prior art keywords
- strip steel
- controller
- metal detector
- coiling
- pinch roll
- 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.)
- Active
Links
Images
Landscapes
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The utility model discloses a strip steel position correcting device, which is applied to a hot rolling production line, and comprises: a first speed detector disposed on a final stand of the finishing mill group; the finish rolling controller is electrically connected with the first speed detector; the hot metal detector is arranged between the finishing mill group and the pinch roll and is opposite to the strip steel; the cold metal detector is arranged between the hot metal detector and the pinch roll and is opposite to the strip steel; the first pressure sensor is arranged at the position of the pinch roll; and the coiling controller is electrically connected with the finish rolling controller, the hot metal detector, the cold metal detector and the first pressure sensor. The utility model solves the technical problems of reliability and accuracy of judging the strip steel position in the related technology, reduces the deviation of the actual calculated position of the strip steel head and improves the reliability and accuracy of judging the strip steel position.
Description
Technical Field
The utility model relates to the technical field of hot rolling, in particular to a strip steel position correcting device.
Background
In a hot rolling production line, a coiler is positioned at the downstream of a finishing mill group, a pinch roll device is impacted by the head of strip steel, the pinch roll device generates a steel biting signal, the pinch roll device bends the head of the strip steel and sends the head of the strip steel to the interior of the coiler, wherein, a wrapper roll tracks the head of the strip steel, and then obtains the position of the strip steel to execute automatic stepping control, if the automatic stepping control is ideal, not only can the indentation caused by the impact of the head of the strip steel on the wrapper roll be reduced, but also the tension of the strip steel can be smoothly established.
However, in the prior art, the tracking of the strip steel head depends on a cold metal detection device arranged at the upstream of a coiling machine, the environment of a hot rolling production line is harsh, and environmental factors such as high temperature, sparks, irritant gas and the like exist, and the cold metal detection device is easily influenced by external environments such as water vapor, sparks and the like to generate invalid signals, so that the tracking calculation of the strip steel head is triggered by mistake, the wrapper roll executes automatic stepping control in advance, the head is easily blocked in the advancing process of the strip steel, certain deviation exists between the actual speed and the program calculation speed, the head tracking calculation position needs to be corrected by using a steel biting signal, the steel biting signal is generated by pressure fluctuation of a pinch roll in advance or the pinch roll generates the steel biting signal when the strip steel head position is far away from the pinch roll, the position of the strip steel head is corrected, and the actual position of the strip steel head is deviated from the calculation position, finally, the technical problem that the reliability and the accuracy of the judgment of the strip steel position are not high is caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a strip steel position correcting device, and solves the technical problem that the reliability and accuracy of strip steel position judgment in the related technology are not high.
In a first aspect, the present invention provides a strip position correction apparatus applied to a hot rolling line including a finishing mill group and pinch rolls sequentially arranged along a strip running direction, the apparatus including: a first speed detector disposed on a final stand of the finishing mill group; the finish rolling controller is electrically connected with the first speed detector; the hot metal detector is arranged between the finishing mill group and the pinch roll and is opposite to the strip steel; the cold metal detector is arranged between the hot metal detector and the pinch roll and is opposite to the strip steel; the first pressure sensor is arranged at the position of the pinch roll; and the coiling controller is electrically connected with the finish rolling controller, the hot metal detector, the cold metal detector and the first pressure sensor.
Preferably, the first speed detector includes: laser speed sensor or radar speed sensor.
Preferably, the finish rolling controller is specifically: a programmable logic controller or computer; the coiling controller is specifically as follows: a programmable logic controller or a computer.
Preferably, the hot metal detector is spaced from the cold metal detector.
Preferably, the cold metal detector is spaced from the pinch rolls.
Preferably, the cold metal detector is: laser type cold metal detector.
Preferably, the apparatus further comprises: and the second speed detector is arranged at the position of the pinch roll and is electrically connected with the coiling controller.
Preferably, the hot rolling line further comprises a wrapper roll arranged downstream of the pinch roll along the running direction of the strip, and the device further comprises: and the second pressure sensor is arranged at the position of the wrapper roll and is electrically connected with the coiling controller.
Preferably, the pinch roll and the wrapper roll are arranged at intervals.
In a second aspect, the utility model provides a strip steel coiling control system according to an embodiment of the utility model, which includes a finishing mill group, a coiler and the strip steel position correction device described in the first aspect.
One or more technical solutions provided in the embodiments of the present invention can solve the technical problem only by the connection setting of each device, and have at least the following technical effects or advantages:
in the embodiment of the utility model, because the hot metal detector is electrically connected with the coiling controller, when the head of the strip steel reaches the effective detection point of the hot metal detector, the hot metal detector can send a first strip steel head arrival signal to the coiling controller, and because the finish rolling controller is electrically connected with the first speed detector, when the coiling controller acquires the first strip steel head arrival signal, the finish rolling controller can simultaneously receive the first strip steel head arrival signal by utilizing the electrical connection between the coiling controller and the finish rolling controller, and when the finish rolling controller receives the first strip steel head arrival signal, the finish rolling controller can acquire the first actual rotating speed of the last rack of the finish rolling unit, which is acquired by the first speed detector, and feed the first actual rotating speed back to the coiling controller.
And because the cold metal detector is electrically connected with the coiling controller, after the head of the strip steel reaches the effective detection point of the cold metal detector, the cold metal detector can send a second strip steel head reaching signal to the coiling controller, based on the first actual rotating speed, the moment when the strip steel reaches the hot metal detector and the moment when the strip steel reaches the cold metal detector, the coiling controller can obtain the displacement of the strip steel, when the strip steel reaches the pinch roll, the first pressure sensor is electrically connected with the coiling controller, the coiling controller can obtain a first actual pressure value of the pinch roll, when the cold metal detector generates a second strip steel head reaching signal which is effective and the first actual pressure value is greater than a preset first trigger pressure value, the coiling controller can correct the actual position of the strip steel based on the displacement of the strip steel, so as to reduce the deviation between the actual position and the calculated position of the strip steel head, the reliability and the accuracy of judging the position of the strip steel are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view showing the structure of a hot rolling line according to an embodiment of the present invention;
FIG. 2 is a schematic view of a hot rolling line in which a strip position correcting apparatus according to an embodiment of the present invention is installed;
FIG. 3 is a schematic diagram of a strip position correction device in one or more embodiments of the utility model.
Detailed Description
The embodiment of the utility model provides a strip steel position correcting device, and solves the technical problems of reliability and accuracy of strip steel position judgment in the related technology.
In order to solve the technical problems, the embodiment of the utility model provides the following general ideas:
by electrically connecting the hot metal detector with the coiling controller, after the head of the strip steel reaches the effective detection point of the hot metal detector, the hot metal detector can send a first strip steel head arrival signal to the coiling controller, and because the finish rolling controller is electrically connected with the first speed detector, when the coiling controller acquires the first strip steel head arrival signal, the finish rolling controller can synchronously receive the first strip steel head arrival signal by utilizing the electrical connection between the coiling controller and the finish rolling controller, and when receiving the first strip steel head arrival signal, the finish rolling controller can acquire the first actual rotating speed of the last stand of the finish rolling unit acquired by the first speed detector and feed the first actual rotating speed back to the coiling controller.
And because the cold metal detector is electrically connected with the coiling controller, after the head of the strip steel reaches the effective detection point of the cold metal detector, the cold metal detector can send a second strip steel head reaching signal to the coiling controller, based on the first actual rotating speed, the moment when the strip steel reaches the hot metal detector and the moment when the strip steel reaches the cold metal detector, the coiling controller can obtain the displacement of the strip steel, when the strip steel reaches the pinch roll, the first pressure sensor is electrically connected with the coiling controller, the coiling controller can obtain a first actual pressure value of the pinch roll, when the second strip steel head reaching signal generated by the cold metal detector is effective and the first actual pressure value is greater than a preset first trigger pressure value, the coiling controller can correct the actual position of the strip steel based on the displacement of the strip steel, so as to reduce the deviation of the actual calculation position of the strip steel head, the reliability and the accuracy of judging the position of the strip steel are improved.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The strip steel position correcting device provided by the embodiment of the utility model can be applied to a hot rolling production line, and please refer to fig. 1, the hot rolling production line comprises a finishing mill group 100, a pinch roll 110 and a wrapper roll 120 which are sequentially arranged along the running direction of the strip steel.
Referring to fig. 2, a strip steel position correction apparatus according to an embodiment of the present invention includes: a first speed detector 201 provided on the final stand 101 of the finishing mill group 100; a finish rolling controller 202 electrically connected to the first speed detector 201; a hot metal detector 203 disposed between the finishing mill group 100 and the pinch roll 110, and opposite to the strip steel; a cold metal detector 204 disposed between the hot metal detector 203 and the pinch roll 110, and facing the strip steel; a first pressure sensor 205 provided at a position where the pinch roll 110 is located; the coiling controller 206 is electrically connected to the finish rolling controller 202, the hot metal detector 203, the cold metal detector 204, and the first pressure sensor 205.
In the embodiment of the utility model, because the strip steel has certain heat radiation on the hot rolling production line, when the strip steel reaches the detection range of the hot metal detector 203, a trigger point is preset on the hot metal detector 203, and when the radiation quantity in the detection range of the hot metal detector 203 exceeds the preset trigger point, an electronic switch output circuit of the hot metal detector 203 is triggered, so as to generate a first strip steel head reaching signal, wherein the trigger point of the hot metal detector 203 can be automatically set to realize different detection sensitivities, the hot metal detector 203 can be arranged at an interval with the upper surface of the strip steel or the lower surface of the strip steel, and the interval distance can be 1-6 meters.
In an embodiment of the present invention, the first speed detector 201 is configured to continuously collect the first actual rotational speed of the last stand 101 of the finishing mill group 100, and is electrically connected to the finishing mill controller 202 through the first speed detector 201, and is capable of responding to a data request of the finishing mill controller 202 to feed back the first actual rotational speed of the last stand 101 to the finishing mill controller 202.
In some embodiment modes, the first velocity detector 201 includes: laser speed sensor or radar speed sensor.
In the embodiment of the present invention, the hot metal detector 203 can feed back the first strip head arrival signal to the coiling controller 206 by using the electrical connection between the hot metal detector 203 and the coiling controller 206, so that the finishing rolling controller 202 can synchronously receive the first strip head arrival signal through the electrical connection between the coiling controller 206 and the finishing rolling controller 202, and the finishing rolling controller 202 sends a data request to the first speed detector 201 to obtain the first actual rotation speed collected by the first speed detector 201 when receiving the first strip head arrival signal, and sends the first actual rotation speed to the coiling controller 206.
In some example implementations, the finishing controller 202 may be a programmable logic controller or a computer.
In the embodiment of the utility model, when the strip steel moves to the detection range of the cold metal detector 203, the cold metal detector 203 generates a second strip steel head arrival signal, and the cold metal detector 204 can send the second strip steel head arrival signal to the coiling controller 206 by utilizing the electrical connection between the cold metal detector 204 and the coiling controller 206, wherein the cold metal detector 203 can be arranged at a distance from the upper surface of the strip steel or the lower surface of the strip steel, and the distance can be 1-6 meters.
In some embodiments, hot metal detector 203 is spaced from cold metal detector 204 by a physical distance that may be 1.5 meters to 2 meters, such as 1.5 meters, 1.7 meters, 1.9 meters, or 2 meters.
In the embodiment of the present invention, the coiling controller 206 can calculate the advancing distance of the strip head from the hot metal detector 203 based on the time when the strip reaches the hot metal detector 203, the received first actual rotational speed and the scanning period of the coiling controller 206, and on the basis, after the coiling controller 206 receives the second strip head reaching signal generated by the cold metal detector 203, the coiling controller 206 can calculate the first theoretical distance when the strip moves from the cold metal detector 203 to the hot metal detector 204 by using the time when the strip reaches the cold metal detector 204.
Since displacement errors may occur in the moving process of the strip steel, for example, the strip steel may slip between the strip steel and the finishing mill group 100 to cause the strip steel displacement to be inconsistent with the rotating distance of the stand, and further cause the actual position of the strip steel to be forward or backward, in order to improve the accuracy of the arrival signal of the head of the second strip steel and reduce the deviation between the actual position and the calculated position of the head of the strip steel, the effectiveness of the arrival signal of the head of the second strip steel may be determined by the coiling controller 206.
Specifically, the actual distance can be used, and when the difference between the actual distance and the first theoretical distance is within a preset first allowable range, the second strip steel head arrival signal is determined to be valid; if not, the coiling controller 206 does not use the second strip steel head arrival signal to correct the strip steel position, wherein the preset first allowable range may be 500mm to 600mm, and certainly, the actual distance may be divided by the first theoretical distance to obtain a value representing the difference between the first theoretical distance and the actual distance, and then the validity of the second strip steel head arrival signal is determined based on the value representing the difference.
If the second strip steel head arrival signal is valid, when the strip steel arrives at the pinch roll 110, the first pressure sensor 205 can uninterruptedly acquire a first actual pressure value generated by the pinch roll 110, and feed the first actual pressure value back to the coiling controller 206 in real time, and based on the first actual rotating speed, the moment when the strip steel arrives at the cold metal detector 204, and the moment when the strip steel arrives at the pinch roll 110, the coiling controller 206 can calculate a second theoretical distance when the strip steel moves from the cold metal detector 204 to the pinch roll 110.
In some embodiment implementations, the take-up controller 206 can be a programmable logic controller or a computer.
In some embodiments, cold metal detector 204 is spaced from pinch roll 110 by a physical distance that may be 2.2 meters to 2.6 meters, such as 2.2 meters, 2.3 meters, 2.45 meters, or 2.6 meters.
When the coiling controller 206 monitors that the first actual pressure value is greater than a preset first trigger pressure value, and the difference value between the actual distance between the cold metal detector 204 and the pinch roll 110 and the second theoretical distance is within a preset second allowable range, the coiling controller 206 can correct the position of the strip steel at the pinch roll 110 based on the first actual rotating speed; otherwise, the coiling controller 206 does not correct the position of the strip steel at the pinch roll 110, wherein the preset first trigger pressure value may be 13-16 KN, for example, 15KN, and the preset second allowable range may be 200 mm-300 mm, and of course, the actual distance may be divided by the second theoretical distance to obtain a value representing the difference between the second theoretical distance and the actual distance, and then, based on the value representing the difference, it is determined whether the difference between the actual distance and the second theoretical distance is within the preset second allowable range.
In some embodiments, the cold metal detector may be a laser type cold metal detector, or other cold metal detectors with strong interference resistance.
In some embodiment modes, please refer to fig. 3, the strip steel position correction apparatus further includes: the secondary speed detector 207 is disposed at the position of the pinch roll 110, may be disposed on the lower pinch roll 110, and is electrically connected to the reeling controller 206, and the secondary speed detector 207 is configured to uninterruptedly acquire a secondary actual rotational speed of the pinch roll 110, and can respond to a data request of the reeling controller 206 by electrically connecting the secondary speed detector 207 to the reeling controller 206 to feed back the secondary actual rotational speed of the pinch roll 110 to the reeling controller 206.
In some embodiments, referring to fig. 3, the hot rolling line further includes wrapper rolls 120 disposed downstream of the pinch rolls 110 in the running direction of the strip, and the strip position correcting apparatus further includes: the second pressure sensor 208 and the second pressure sensor 208 are disposed at the position of the wrapper roll 120 and electrically connected to the coiling controller 206, when the strip steel reaches the wrapper roll 120, the second pressure sensor 208 can uninterruptedly acquire a second actual pressure value generated by the wrapper roll 120 and feed the second actual pressure value back to the coiling controller 206 in real time, and based on the second actual rotation speed, the moment when the strip steel reaches the pinch roll 110, and the moment when the strip steel reaches the wrapper roll 120, the coiling controller 206 can calculate a third theoretical distance that the strip steel moves from the pinch roll 110 to the wrapper roll 120.
In some embodiments, the pinch roll 110 and the wrapper roll 120 are spaced apart, and the actual distance between the spacing may be 3.4 meters to 3.8 meters, such as 3.4 meters, 3.5 meters, 3.675 meters, or 3.8 meters.
When the coiling controller 206 monitors that the second actual pressure value is greater than the preset second trigger pressure value, and the difference value between the actual distance between the pinch roll 110 and the wrapper roll 120 and the third theoretical distance is within the preset third allowable range, the coiling controller 206 can correct the position of the strip steel at the wrapper roll 120 based on the second actual rotation speed; otherwise, the coiling controller 206 does not correct the position of the strip steel at the auxiliary winding roll 120, wherein the preset second trigger pressure value may be 13 to 16KN, for example, 15KN, and the preset third allowable range may be 200mm to 300mm, and of course, the actual distance may be divided by the third theoretical distance to obtain a value representing the difference between the third theoretical distance and the actual distance, and then based on the value representing the difference, it is determined whether the difference between the actual distance and the third theoretical distance is within the preset third allowable range.
A strip steel coiling control system, comprising a finishing mill group 100, a coiler and the strip steel position correction device, wherein the implementation details of the strip steel position correction device can refer to the foregoing embodiments, and are not repeated herein for the brevity of the description.
The technical scheme in the embodiment of the application can solve the technical problem only through the connection arrangement of each device, and has at least the following technical effects or advantages:
1. in the strip steel position correcting device disclosed in the embodiment of the present invention, after the head of the strip steel reaches the valid detection point of the hot metal detector 203, the hot metal detector 203 can send a first strip steel head arrival signal to the coiling controller 206, and synchronously receive the first strip steel head arrival signal through the finish rolling controller 202, when the finish rolling controller 202 receives the first strip steel head arrival signal, the finish rolling controller 202 can obtain the first actual rotation speed of the last stand 101 of the finish rolling unit 100 collected by the first speed detector 201, and feed the first actual rotation speed back to the coiling controller 206, when the head of the strip steel reaches the valid detection point of the cold metal detector 204, the cold metal detector 204 can send a second strip steel head arrival signal to the coiling controller 206, based on the first actual rotation speed, the time when the strip steel arrives at the hot metal detector 203, and the time when the strip steel arrives at the cold metal detector 204, the coiling controller 206 can obtain the displacement of the strip steel, when the strip steel reaches the pinch roll 110, the coiling controller 206 can obtain a first actual pressure value of the pinch roll 110 by using the first pressure sensor 205, and when a second strip steel head reaching signal generated by the cold metal detector 204 is effective and the first actual pressure value is greater than a preset first trigger pressure value, the coiling controller 206 can correct the actual position of the strip steel based on the displacement of the strip steel, so that the deviation of the actual calculated position of the strip steel head is reduced, and the reliability and the accuracy of the strip steel position judgment are improved.
2. In the strip steel position correcting device disclosed by the embodiment of the utility model, the second speed detector 207 is arranged at the position of the pinch roll 110 and is electrically connected with the coiling controller 206, so that the coiling controller 206 can obtain a second actual rotating speed of the pinch roll 110, the second pressure sensor 208 is arranged at the position of the wrapper roll 120 and is electrically connected with the coiling controller 206, and by arranging the pinch roll 110 and the wrapper roll 120 at intervals, when the coiling controller 206 monitors that the second actual pressure value is greater than a preset second trigger pressure value and the difference value between the actual distance between the pinch roll 110 and the wrapper roll 120 and a third theoretical distance is within a preset third allowable range, the coiling controller 206 can correct the position of the strip steel at the wrapper roll 120 based on the second actual rotating speed, thereby further reducing the deviation of the actual calculated position of the head of the strip steel, the reliability and the accuracy of judging the position of the strip steel are improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a belted steel position correcting unit, is applied to the hot rolling production line, the hot rolling production line includes finishing mill group and pinch roll that set gradually along belted steel traffic direction, its characterized in that, the device includes:
a first speed detector disposed on a final stand of the finishing mill group;
the finish rolling controller is electrically connected with the first speed detector;
the hot metal detector is arranged between the finishing mill group and the pinch roll and is opposite to the strip steel;
the cold metal detector is arranged between the hot metal detector and the pinch roll and is opposite to the strip steel;
the first pressure sensor is arranged at the position of the pinch roll;
and the coiling controller is electrically connected with the finish rolling controller, the hot metal detector, the cold metal detector and the first pressure sensor.
2. The apparatus of claim 1, wherein the first velocity detector comprises:
laser speed sensor or radar speed sensor.
3. The apparatus of claim 1,
the finish rolling controller is specifically as follows: a programmable logic controller or computer;
the coiling controller is specifically as follows: a programmable logic controller or a computer.
4. The apparatus of claim 1, wherein the hot metal detector is spaced apart from the cold metal detector.
5. The apparatus of claim 1 wherein said cold metal detector is spaced from said pinch rolls.
6. The apparatus of any of claims 1 or 4-5, wherein the cold metal detector is:
laser type cold metal detector.
7. The apparatus of claim 1, wherein the apparatus further comprises:
and the second speed detector is arranged at the position of the pinch roll and is electrically connected with the coiling controller.
8. The apparatus of claim 1, wherein said hot rolling line further comprises wrapper rolls disposed downstream of said pinch rolls in the direction of travel of said strip, said apparatus further comprising:
and the second pressure sensor is arranged at the position of the wrapper roll and is electrically connected with the coiling controller.
9. The apparatus of claim 8 wherein said pinch roll is spaced from said wrapper roll.
10. A strip steel coiling control system comprising the apparatus of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121013319.XU CN215543847U (en) | 2021-05-12 | 2021-05-12 | Strip steel position correcting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121013319.XU CN215543847U (en) | 2021-05-12 | 2021-05-12 | Strip steel position correcting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215543847U true CN215543847U (en) | 2022-01-18 |
Family
ID=79860432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121013319.XU Active CN215543847U (en) | 2021-05-12 | 2021-05-12 | Strip steel position correcting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215543847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653762A (en) * | 2022-05-10 | 2022-06-24 | 新余钢铁股份有限公司 | Water-cooling and cooling-control method and system for head of high-speed wire rod |
-
2021
- 2021-05-12 CN CN202121013319.XU patent/CN215543847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653762A (en) * | 2022-05-10 | 2022-06-24 | 新余钢铁股份有限公司 | Water-cooling and cooling-control method and system for head of high-speed wire rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104307892B (en) | The method of band head correction in tandem rolling crossing process | |
| CN215543847U (en) | Strip steel position correcting device | |
| US20090113968A1 (en) | Method for Detecting Strip Edges | |
| CN105251776A (en) | Tracking processing method for band steel on cold tandem mill | |
| CN104848793B (en) | The method and system for having cut continuous casting billet length that on-line measurement is conveyed at a high speed | |
| CA2325328C (en) | Strip thickness control apparatus for rolling mill | |
| CN107971353A (en) | The roller-way control method of steel pipe on-line cooling | |
| US11745235B2 (en) | Method and device for controlling a stretch reducing rolling mill for wall thickness compensation | |
| JP2536970B2 (en) | Plate thickness measurement method | |
| EP0367500B1 (en) | The hot rolling of metal strip | |
| CN104805461A (en) | Deviation rectification method for pickling | |
| JPS6121730B2 (en) | ||
| CN102141378B (en) | Method for detecting hot strip steel unequal-height free loop | |
| JP2737310B2 (en) | Rolling method of seamless steel pipe | |
| JPH0686593A (en) | Coil diameter deviation compensating apparatus in cold reverse rolling | |
| JP2755120B2 (en) | Method and apparatus for controlling change in thickness of hot rolling material and tracking method of change in thickness during hot rolling | |
| JPS62124011A (en) | Automatic plate thickness control device | |
| US6230531B1 (en) | Rolling data collecting method and system | |
| JPH052404B2 (en) | ||
| CN118162484A (en) | Method, device, medium and equipment for updating steel coil information in continuous casting and rolling production line | |
| JPH08309425A (en) | Control method for cooling of hot rolled steel sheet | |
| JP2003117604A (en) | Method and apparatus for measuring shape of camber of rolled metallic strip and rolling equipment | |
| JPS5868414A (en) | Method for controlling sheet thickness using inlet-side thickness gauge | |
| JPS63171213A (en) | Method for detecting meandering amount of rolled stock | |
| JPS60115327A (en) | Camber measuring method of steel plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |