CN111842510B - Automatic calibration method for vertical rolling mill - Google Patents
Automatic calibration method for vertical rolling mill Download PDFInfo
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- CN111842510B CN111842510B CN202010643964.3A CN202010643964A CN111842510B CN 111842510 B CN111842510 B CN 111842510B CN 202010643964 A CN202010643964 A CN 202010643964A CN 111842510 B CN111842510 B CN 111842510B
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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
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
- B21B38/105—Calibrating or presetting roll-gap
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Abstract
The invention discloses an automatic calibration method of a vertical rolling mill, which comprises the steps of respectively and fixedly mounting an upper nose bridge calibration plate and a lower nose bridge calibration plate on an upper nose bridge and a lower nose bridge, respectively and fixedly mounting an upper transmission side vertical roll calibration plate and a lower transmission side vertical roll calibration plate which can be respectively abutted against the upper nose bridge calibration plate and the lower nose bridge calibration plate on the upper part and the lower part of a transmission side vertical roll bearing seat, respectively and fixedly mounting an upper operation side vertical roll calibration plate and a lower operation side vertical roll calibration plate which can be respectively abutted against the upper nose bridge calibration plate and the lower nose bridge calibration plate on the upper part and the lower part of an operation side vertical roll bearing seat, and respectively and correspondingly setting a transmission side vertical roll position calibration value and an operation side vertical roll position calibration value on a rolling mill operation system. The roller gap width adjusting oil cylinder is controlled to act to drive the transmission side vertical roller bearing seat and the operation side vertical roller bearing seat to move to fixed positions so as to calibrate the position of the roller gap width adjusting oil cylinder displacement sensor.
Description
Technical Field
The invention belongs to the technical field of metallurgical steel rolling, and particularly relates to an automatic calibration method for a vertical rolling mill.
Background
The vertical rolling mill of the hot continuous rolling production line is mainly used for rolling the slab in the width direction, and the accuracy of a roll gap and the centering degree between rolls directly influence the rolling stability and the quality of strip steel in rolling. At present, the vertical rolling mill measures and calibrates a roll gap (a distance between roll surfaces of vertical rolls on two sides) and confirms alignment (a distance difference between the roll surfaces of the vertical rolls on two sides and a rolling center line of the rolling mill), and a main method and means are that a measuring tape or various simple tools are manually used for detection and measurement and then calibration is carried out. The main ways of measuring the roll gap and the centering degree in combination with the current production line can be summarized as follows; the first type is measurement by means of simple measuring tools, such as a measuring tape, a laser range finder, a scale and the like; the second category is the efficient measurement of relevant data by means of simple measurement tools that are manufactured. Referring to fig. 1, a first method: a fixed end of a measuring tape or a simple instrument is placed to the highest position of the surface of the DS side vertical roller 1 'to be fixed, a measuring end is moved to the highest position of the surface of the OS side vertical roller 5' to carry out reading, and the read value is the opening degree of the roller gap; the second method comprises the following steps: as shown in FIG. 1, the fixed end of the measuring tape or the simple instrument is fixed on the DS-side vertical roller bearing coordinate fixed plate 2 ', the measuring end is moved to the OS-side vertical roller bearing coordinate fixed plate 4' for reading, the reading value is A, the roll gap value is A measured value +300 fixed value + (D1 maximum roll diameter-D2 current roll diameter). Referring to fig. 1, the roll alignment measuring method comprises the following steps: placing a fixed end of a measuring tape or a simple instrument to the highest position of the surface of the DS side vertical roll 1 'for fixing, moving a measuring end to a centering calibration point 3' and carrying out reading record; placing the fixed end of a measuring tape or a simple instrument to the highest position of the surface of the 0S side vertical roller 4 'for fixing, moving the measuring end to the alignment calibration point 3', and performing reading and recording; and subtracting the two groups of numerical values to obtain the centering degree of the rollers on the two sides. After the roll gap and the alignment degree are obtained through measurement, the measurement result is input into a rolling mill control system to calibrate a displacement sensor of a roll gap width adjusting oil cylinder.
The two existing measuring methods are man-machine combined operation, and the man-machine combined operation has the following defects that firstly, when a person measures a roll gap and a centering degree, the person needs to climb on equipment for carrying out the measurement, because the position in a vertical rolling mill has a severe environment, a large height difference belongs to high-altitude adjacent operation, and the operator can cause personal injury by carelessness; secondly, the dependence of the person on the roll gap and the centering degree on the personal ability and experience is strong, different results can be obtained by different persons operating the same method, errors occur in the measured value, the functional precision requirement cannot be met, and the rolling quality is influenced finally; thirdly, due to the fine simplification of personnel, the subsequent factory equipment personnel are reduced step by step, and the measurement by a user is more time-consuming.
The above discussion is intended to introduce the reader to various aspects of art that may be related to various aspects of the present invention, which are described and/or claimed below, and is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present invention, and is therefore to be understood in this light, and not as an admission of prior art.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present invention provides an automatic calibration method for a vertical rolling mill.
The purpose of the invention is realized by the following technical scheme:
provides an automatic calibration method of a vertical rolling mill, the vertical rolling mill comprises a vertical roll frame, a transmission side vertical roll bearing seat and an operation side vertical roll bearing seat are respectively arranged on the left side and the right side of the upper part of the vertical roll frame in a sliding way, the transmission side vertical roll and the operation side vertical roll are respectively and rotatably arranged on the transmission side vertical roll bearing seat and the operation side vertical roll bearing seat, the upper part and the lower part of the vertical roll frame are respectively and fixedly provided with an upper nose bridge and a lower nose bridge which are positioned between the transmission side vertical roll and the operation side vertical roll, the transmission side vertical roll bearing seat and the operation side vertical roll bearing seat are both connected with a roll gap width adjusting oil cylinder and a pull-back oil cylinder which drive the transmission side vertical roll and the operation side vertical roll to slide on the vertical roll frame so as to adjust the distance between the transmission side vertical roll and the operation side vertical roll, the roll gap width adjusting oil cylinder is provided with a displacement sensor for detecting the stroke of the roll gap width adjusting oil cylinder, and the automatic calibration method comprises the following steps:
s1, an upper nose bridge calibration plate and a lower nose bridge calibration plate are respectively and fixedly arranged on the upper nose bridge and the lower nose bridge, the upper part and the lower part of the transmission side vertical roll bearing seat are respectively and fixedly provided with a transmission side vertical roll upper calibration plate and a transmission side vertical roll lower calibration plate which can respectively abut against the upper nose bridge calibration plate and the lower nose bridge calibration plate when the transmission side vertical roll bearing seat moves rightwards to a preset transmission calibration position, the upper part and the lower part of the operation side vertical roll bearing seat are respectively and fixedly provided with an operation side vertical roll upper calibration plate and an operation side vertical roll lower calibration plate which can respectively abut against the upper nose bridge calibration plate and the lower nose bridge calibration plate when the operation side vertical roll bearing seat moves leftwards to a preset operation calibration position, setting a transmission side vertical roll position calibration value and an operation side vertical roll position calibration value which respectively correspond to the preset transmission calibration position and the preset operation calibration position in a rolling mill operation system;
s2, controlling the roll gap width adjusting oil cylinder and the pull-back oil cylinder to move, and enabling the transmission side vertical roll bearing seat and the operation side vertical roll bearing seat to slide to the maximum positions leftwards and rightwards respectively;
s3: setting a displacement sensor of each roll gap width adjusting oil cylinder to be a zero position in a rolling mill operating system;
s4: controlling the action of a roll gap width adjusting oil cylinder, driving a transmission side vertical roll bearing seat to move rightwards until an upper calibration plate of the transmission side vertical roll and a lower calibration plate of the transmission side vertical roll are respectively abutted with an upper nose bridge calibration plate and a lower nose bridge calibration plate until the roll gap width adjusting oil cylinder generates a set oil pressure, driving an operation side vertical roll bearing seat to move leftwards until the upper calibration plate of the operation side vertical roll and the lower calibration plate of the operation side vertical roll are respectively abutted with the upper nose bridge calibration plate and the lower nose bridge calibration plate until the roll gap width adjusting oil cylinder generates the set oil pressure;
s5: calibrating the displacement sensor of each roll gap width adjusting oil cylinder in a rolling mill operating system according to the transmission side vertical roll position calibration value and the operation side vertical roll position calibration value;
s6: and controlling the roll gap width adjusting oil cylinder and the pull-back oil cylinder to move, so that the transmission side vertical roll bearing seat and the operation side vertical roll bearing seat respectively slide to the maximum positions leftwards and rightwards, and the automatic calibration is completed.
As a further improvement, the preset transmission calibration position is the maximum position of the right movement of the transmission side vertical roll bearing seat, and the preset operation calibration position is the maximum position of the left movement of the operation side vertical roll bearing seat.
As a further improvement, the set oil pressure is more than or equal to 20 bar.
As a further improvement, in step S5, when the stroke value detected by the displacement sensor of each roll gap width adjusting cylinder is equal to the corresponding transmission side vertical roll position calibration value and operation side vertical roll position calibration value, completing calibration; and when the stroke value detected by the displacement sensor of each roll gap width adjusting oil cylinder is not equal to the corresponding transmission side vertical roll position calibration value and the corresponding operation side vertical roll position calibration value, correcting the stroke value of the displacement sensor of the roll gap width adjusting oil cylinder to enable the stroke value to be equal to the corresponding transmission side vertical roll position calibration value and the corresponding operation side vertical roll position calibration value.
As a further improvement, in the steps S2-S6, the operation of the roll gap width adjusting cylinder and the retracting cylinder on the transmission side vertical roll chock side is controlled first, and then the operation of the roll gap width adjusting cylinder and the retracting cylinder on the operation side vertical roll chock side is controlled, or the operation of the roll gap width adjusting cylinder and the retracting cylinder on the operation side vertical roll chock side is controlled first, and then the operation of the roll gap width adjusting cylinder and the retracting cylinder on the transmission side vertical roll chock side is controlled.
The invention provides an automatic calibration method of a vertical rolling mill, which comprises the steps of respectively and fixedly installing an upper nose bridge calibration plate and a lower nose bridge calibration plate on an upper nose bridge and a lower nose bridge, respectively and fixedly installing an upper transmission side vertical roll calibration plate and a lower transmission side vertical roll calibration plate which can be respectively abutted against the upper nose bridge calibration plate and the lower nose bridge calibration plate when a transmission side vertical roll bearing seat moves rightwards to a preset transmission calibration position, respectively and fixedly installing an upper operation side vertical roll calibration plate and a lower operation side vertical roll calibration plate which can be respectively abutted against the upper nose bridge calibration plate and the lower nose bridge calibration plate when an operation side vertical roll bearing seat moves leftwards to a preset operation calibration position, respectively, and setting a transmission side vertical roll position calibration value and a lower operation side vertical roll position calibration value which respectively correspond to the preset transmission calibration position and the preset operation calibration position, respectively, on an operation system of the rolling mill, And (3) operating the position calibration value of the side vertical roll, and driving the transmission side vertical roll bearing seat and the operation side vertical roll bearing seat to move to fixed positions by controlling the action of the roll gap width adjusting oil cylinder so as to calibrate the position of the roll gap width adjusting oil cylinder displacement sensor. Therefore, automatic measurement calibration of the vertical rolling mill is realized by using fixed equipment, fixed programs and fixed operation modes, when roll gaps and centering degrees need to be measured, only an operator needs to operate on an operation table, the manpower input is effectively reduced, the equipment function precision is guaranteed, the rolling stability is improved, and complicated operation is reduced.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an automatic calibration method for a vertical rolling mill in the related art.
FIG. 2 is a schematic diagram of a modified structure of a vertical rolling mill applying the automatic calibration method of the vertical rolling mill of the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it is to be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
Referring to fig. 2, an automatic calibration method for a vertical rolling mill according to an embodiment of the present invention includes a vertical roll frame 1, where a transmission-side vertical roll bearing seat 2 and an operation-side vertical roll bearing seat 3 are slidably disposed on the left side and the right side of the upper portion of the vertical roll frame 1, a transmission-side vertical roll 4 and an operation-side vertical roll 5 are rotatably disposed on the transmission-side vertical roll bearing seat 2 and the operation-side vertical roll bearing seat 3, respectively, an upper nose bridge 6 and a lower nose bridge 7 between the transmission-side vertical roll 4 and the operation-side vertical roll 5 are fixedly disposed on the upper portion and the lower portion of the vertical roll frame 1, respectively, and the upper nose bridge 6 is used to prevent a strip steel from penetrating through the middle of the operation-side vertical roll 4 and the operation-side vertical roll 5 to damage a transmission shaft and other devices when a steel stacking accident occurs; the lower nose bridge 7 plays a supporting role when the strip steel enters the middle of the transmission side vertical roll 4 and the operation side vertical roll 5, and the strip steel is prevented from falling. The transmission side vertical roll bearing seat 2 and the operation side vertical roll bearing seat 3 are both connected with a roll gap width adjusting oil cylinder 8 and a pull-back oil cylinder 9 which are used for driving the transmission side vertical roll bearing seat 2 and the operation side vertical roll bearing seat 3 to slide on the vertical roll frame 1 so as to adjust the distance between the transmission side vertical roll 4 and the operation side vertical roll 5, the transmission side vertical roll bearing seat 2 and the operation side vertical roll bearing seat 3 are both connected with two roll gap width adjusting oil cylinders 8 and one pull-back oil cylinder 9, the two roll gap width adjusting oil cylinders 8 are arranged up and down and are used for pushing the transmission side vertical roll bearing seat 2 or the operation side vertical roll bearing seat 3 to move towards the rolling central line of the rolling mill, the pull-back oil cylinder 9 is used for enabling the vertical roll bearing seats to be in close contact with the roll gap width adjusting oil cylinders 8, the pull-back process is generally called as a balance process, and the pull-back oil cylinders 9 are also called as balance cylinders. The roll gap width adjusting oil cylinder 8 is provided with a displacement sensor for detecting the stroke of the roll gap width adjusting oil cylinder. The automatic calibration method comprises the following steps:
s1, an upper nose bridge calibration plate 10 and a lower nose bridge calibration plate 11 are respectively and fixedly installed on the upper nose bridge 6 and the lower nose bridge 7, an upper transmission side vertical roll calibration plate 12 and a lower transmission side vertical roll calibration plate 13 which can respectively abut against the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 when the transmission side vertical roll bearing pedestal 2 moves rightwards to a preset transmission calibration position are respectively and fixedly installed on the upper part and the lower part of the transmission side vertical roll bearing pedestal 2, an upper operation side vertical roll calibration plate 14 and a lower operation side vertical roll calibration plate 15 which can respectively abut against the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 when the operation side vertical roll bearing pedestal 3 moves leftwards to a preset operation calibration position are respectively and fixedly installed on the upper part and the lower part of the operation side vertical roll bearing pedestal 3, and a transmission side vertical roll position calibration value, a transmission side calibration value and a lower operation calibration value are respectively corresponding to the preset operation calibration position and a predetermined operation calibration value are respectively and are respectively arranged on a rolling mill operation system, Operating a side vertical roller position calibration value;
s2, controlling the roll gap width adjusting oil cylinder 8 and the pull-back oil cylinder 9 to move, so that the transmission side vertical roll bearing pedestal 2 and the operation side vertical roll bearing pedestal 3 respectively slide to the maximum positions leftwards and rightwards;
s3: setting the displacement sensors of the roll gap width adjusting oil cylinders 8 to be zero positions in a rolling mill operating system;
s4: controlling the action of a roll gap width adjusting oil cylinder 8, driving a transmission side vertical roll bearing seat 2 to move rightwards until an upper calibration plate 12 of a transmission side vertical roll and a lower calibration plate 13 of the transmission side vertical roll are respectively abutted against an upper nose bridge calibration plate 10 and a lower nose bridge calibration plate 11 until the roll gap width adjusting oil cylinder 8 generates a set oil pressure, wherein the set oil pressure is more than or equal to 20bar so as to ensure that the upper calibration plate 12 of the transmission side vertical roll and the lower calibration plate 13 of the transmission side vertical roll are respectively attached to the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11; the roll gap width adjusting oil cylinder 8 drives the operation side vertical roll bearing seat 3 to move leftwards to the operation side vertical roll upper calibration plate 14, the operation side vertical roll lower calibration plate 15 is respectively abutted with the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 until the roll gap width adjusting oil cylinder 8 generates a set oil pressure, wherein the set oil pressure is more than or equal to 20bar, so that the operation side vertical roll upper calibration plate 14 and the operation side vertical roll lower calibration plate 15 are respectively attached to the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 tightly;
s5: and calibrating the displacement sensor of each roll gap width adjusting oil cylinder 8 in a rolling mill operating system according to the transmission side vertical roll position calibration value and the operation side vertical roll position calibration value. The calibration mode is as follows: when the stroke value detected by the displacement sensor of each roll gap width adjusting oil cylinder 8 is equal to the corresponding transmission side vertical roll position calibration value and the operation side vertical roll position calibration value, completing calibration; when the stroke value detected by the displacement sensor of each roll gap width adjusting oil cylinder 8 is not equal to the corresponding transmission side vertical roll position calibration value and operation side vertical roll position calibration value, correcting the stroke value of the displacement sensor of the roll gap width adjusting oil cylinder 8 to enable the stroke value to be equal to the corresponding transmission side vertical roll position calibration value and operation side vertical roll position calibration value;
s6: and controlling the roll gap width adjusting oil cylinder 8 and the pull-back oil cylinder 9 to act, so that the transmission side vertical roll bearing seat 2 and the operation side vertical roll bearing seat 3 respectively slide to the maximum positions leftwards and rightwards, and completing automatic calibration.
As a further preferable embodiment, the preset transmission calibration position is a maximum position at which the transmission-side vertical roll chock 2 moves rightward, and the preset operation calibration position is a maximum position at which the operation-side vertical roll chock 3 moves leftward. Therefore, the maximum detection stroke of the displacement sensor of the roll gap width adjusting oil cylinder 8 can be calibrated.
In a more preferred embodiment, in steps S2 to S6, the operation of the roll gap width adjusting cylinder 8 and the pull-back cylinder 9 on the drive-side vertical roll chock 2 side is controlled first, and the operation of the roll gap width adjusting cylinder 8 and the pull-back cylinder 9 on the operation-side vertical roll chock 3 side is controlled second, or the operation of the roll gap width adjusting cylinder 8 and the pull-back cylinder 9 on the operation-side vertical roll chock 3 side is controlled first, and the operation of the roll gap width adjusting cylinder 8 and the pull-back cylinder 9 on the drive-side vertical roll chock 2 side is controlled second. Therefore, the single-side vertical roll calibration is carried out successively, the operation system of the rolling mill is not required to be modified, and the implementation cost is low.
The control principle of the embodiment of the invention is that the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 are installed, the two roll gap width adjusting oil cylinders 8 on the left side are controlled to push the transmission side vertical roll to the upper calibration plate 12 of the transmission side vertical roll and the lower calibration plate 13 of the transmission side vertical roll to be respectively abutted against the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11, the two roll gap width adjusting oil cylinders 8 on the right side are controlled to push the operation side vertical roll to the upper calibration plate 14 of the operation side vertical roll and the lower calibration plate 15 of the operation side vertical roll to be respectively abutted against the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11, because the positions of the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 are fixed, the positions of the upper nose bridge calibration plate 10 and the lower nose bridge calibration plate 11 are taken as reference points, so that the vertical rolls are closed to the nose bridge calibration plate, at the time, the stroke of the roll gap width adjusting oil cylinders 8 in the system should be Ymm, if the stroke of the oil cylinders is not Ymm, the travel value of the displacement sensor is corrected to achieve calibration.
The embodiment of the invention has been put into practice on a 1780 hot rolling production line E1/E2 vertical rolling mill in Zhanjiang Steel Co., Ltd from 1 month to 30 days in 2020, and has the following advantages after being implemented:
1. the operation is convenient, the field operation of personnel can be completely eliminated, and the operation efficiency is improved.
2. Safe and reliable, eliminate most high altitude and face limit operation, reduce safe risk.
3. The measurement is accurate, and the measurement value is not subjected to measurement error due to personal factors, so that the quality or other losses of the produced product are caused.
4. The method is not restricted, and can realize the roll gap calibration of the vertical rolling mill at any time and any place.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore should not be construed as limiting the scope of the present invention.
In conclusion, although the present invention has been described with reference to the preferred embodiments, it should be noted that, although various changes and modifications may be made by those skilled in the art, they should be included in the scope of the present invention unless they depart from the scope of the present invention.
Claims (5)
1. An automatic calibration method of a vertical rolling mill comprises a vertical roll frame (1), wherein a transmission side vertical roll bearing seat (2) and an operation side vertical roll bearing seat (3) are respectively arranged on the left side and the right side of the upper part of the vertical roll frame (1) in a sliding manner, a transmission side vertical roll (4) and an operation side vertical roll (5) are respectively and rotatably arranged on the transmission side vertical roll bearing seat (2) and the operation side vertical roll bearing seat (3), an upper nose bridge (6) and a lower nose bridge (7) which are positioned between the transmission side vertical roll (4) and the operation side vertical roll (5) are respectively and fixedly arranged on the upper part and the lower part of the vertical roll frame (1), the transmission side vertical roll bearing seat (2) and the operation side vertical roll bearing seat (3) are respectively connected with a roll gap width adjusting oil cylinder (8) and a pull-back oil cylinder (9) which are used for driving the vertical roll bearing seats to slide on the vertical roll frame (1) to adjust the distance between the transmission side vertical roll (4) and the operation side vertical roll (5), the roll gap width adjusting oil cylinder (8) is provided with a displacement sensor for detecting the stroke of the roll gap width adjusting oil cylinder, and the automatic calibration method is characterized by comprising the following steps:
s1, an upper nose bridge calibration plate (10) and a lower nose bridge calibration plate (11) are respectively and fixedly installed on the upper nose bridge (6) and the lower nose bridge (7), the upper part and the lower part of the transmission side vertical roll bearing seat (2) are respectively and fixedly installed with the transmission side vertical roll upper calibration plate (12) and the transmission side vertical roll lower calibration plate (13) which can respectively abut against the upper nose bridge calibration plate (10) and the lower nose bridge calibration plate (11) when the transmission side vertical roll bearing seat (2) moves rightwards to a preset transmission calibration position, the upper part and the lower part of the operation side vertical roll bearing seat (3) are respectively and fixedly installed with the operation side vertical roll upper calibration plate (14) and the operation side vertical roll lower calibration plate (15) which can respectively abut against the upper nose bridge calibration plate (10) and the lower nose bridge calibration plate (11) when the operation side vertical roll bearing seat (3) moves leftwards to a preset operation calibration position, and the preset transmission calibration position and the lower calibration plate (15) are arranged on a rolling mill operation system, Presetting a transmission side vertical roller position calibration value and an operation side vertical roller position calibration value which correspond to the operation calibration position respectively;
s2, controlling the roll gap width adjusting oil cylinder (8) and the pull-back oil cylinder (9) to move, and enabling the transmission side vertical roll bearing seat (2) and the operation side vertical roll bearing seat (3) to slide to the maximum positions leftwards and rightwards respectively;
s3: setting the displacement sensors of the roll gap width adjusting oil cylinders (8) to be zero positions in a rolling mill operating system;
s4: controlling a roll gap width adjusting oil cylinder (8) to act, driving a transmission side vertical roll bearing seat (2) to move rightwards until a transmission side vertical roll upper calibration plate (12) and a transmission side vertical roll lower calibration plate (13) are respectively abutted with an upper nose bridge calibration plate (10) and a lower nose bridge calibration plate (11) until the roll gap width adjusting oil cylinder (8) generates a set oil pressure, driving an operation side vertical roll bearing seat (3) to move leftwards until an operation side vertical roll upper calibration plate (14) and an operation side vertical roll lower calibration plate (15) are respectively abutted with the upper nose bridge calibration plate (10) and the lower nose bridge calibration plate (11) until the roll gap width adjusting oil cylinder (8) generates the set oil pressure;
s5: calibrating the displacement sensor of each roll gap width adjusting oil cylinder (8) in a rolling mill operating system according to the transmission side vertical roll position calibration value and the operation side vertical roll position calibration value;
s6: and controlling the roll gap width adjusting oil cylinder (8) and the pull-back oil cylinder (9) to act, so that the transmission side vertical roll bearing seat (2) and the operation side vertical roll bearing seat (3) respectively slide to the maximum positions leftwards and rightwards, and completing automatic calibration.
2. The automatic calibration method of the vertical rolling mill according to claim 1, characterized in that: in step S1, the preset drive index position is the maximum position at which the drive-side vertical roll bearing block (2) moves rightward, and the preset operation index position is the maximum position at which the operation-side vertical roll bearing block (3) moves leftward.
3. The automatic calibration method of the vertical rolling mill according to claim 1, characterized in that: in step S4, the set oil pressure is equal to or greater than 20 bar.
4. The vertical rolling mill automatic calibration method according to claim 1, 2 or 3, characterized in that: in step S5, when the stroke value detected by the displacement sensor of each roll gap width adjustment cylinder (8) is equal to the corresponding transmission side vertical roll position calibration value and operation side vertical roll position calibration value, completing calibration; and when the stroke value detected by the displacement sensor of each roll gap width adjusting oil cylinder (8) is not equal to the corresponding transmission side vertical roll position calibration value and the corresponding operation side vertical roll position calibration value, correcting the stroke value of the displacement sensor of the roll gap width adjusting oil cylinder (8) to enable the stroke value to be equal to the corresponding transmission side vertical roll position calibration value and the corresponding operation side vertical roll position calibration value.
5. The automatic calibration method of the vertical rolling mill according to claim 4, characterized in that: in the steps S2-S6, the roll gap width adjusting oil cylinder (8) and the pull-back oil cylinder (9) on the transmission side vertical roll chock (2) side are controlled to operate, the roll gap width adjusting oil cylinder (8) and the pull-back oil cylinder (9) on the operation side vertical roll chock (3) side are controlled to operate, or the roll gap width adjusting oil cylinder (8) and the pull-back oil cylinder (9) on the operation side vertical roll chock (3) side are controlled to operate, and the roll gap width adjusting oil cylinder (8) and the pull-back oil cylinder (9) on the transmission side vertical roll chock (2) side are controlled to operate.
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| CN202010643964.3A CN111842510B (en) | 2020-07-07 | 2020-07-07 | Automatic calibration method for vertical rolling mill |
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| CN202010643964.3A CN111842510B (en) | 2020-07-07 | 2020-07-07 | Automatic calibration method for vertical rolling mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2362805C3 (en) * | 1973-12-18 | 1980-01-03 | Fried. Krupp Gmbh, 4300 Essen | Transducer arrangement |
| CN202079087U (en) * | 2011-04-26 | 2011-12-21 | 宝山钢铁股份有限公司 | Adjustable vertical roll side compression device |
| CN102989792B (en) * | 2011-09-16 | 2014-07-09 | 上海梅山钢铁股份有限公司 | Calibration method for clearance between rolls of hot-rolling vertical rolls |
| CN103191930A (en) * | 2012-01-09 | 2013-07-10 | 宝山钢铁股份有限公司 | Changeable vertical roll lateral press device and method |
| CN103316925B (en) * | 2013-06-07 | 2016-10-19 | 鞍钢股份有限公司 | Calibration method for central line of vertical roll of roughing mill |
| CN203778497U (en) * | 2013-10-31 | 2014-08-20 | 宝山钢铁股份有限公司 | Rough rolling vertical roller gap calibration device for hot continuous rolling mill |
| CN106140828A (en) * | 2015-04-27 | 2016-11-23 | 鞍钢股份有限公司 | Method for calibrating vertical roll gap of heavy and medium plate mill |
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