CN111744969B - Zero-adjusting method capable of setting zero-adjusting pressure deviation - Google Patents
Zero-adjusting method capable of setting zero-adjusting pressure deviation Download PDFInfo
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- CN111744969B CN111744969B CN202010498864.6A CN202010498864A CN111744969B CN 111744969 B CN111744969 B CN 111744969B CN 202010498864 A CN202010498864 A CN 202010498864A CN 111744969 B CN111744969 B CN 111744969B
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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
- B21B37/48—Tension control; Compression control
Abstract
The invention provides a zero adjustment method capable of setting zero adjustment pressure deviation, and belongs to the technical field of automatic control of metallurgy. The method comprises the steps of firstly setting target pressure deviation when zero adjustment of a transmission side and an operation side is completed on an HMI, then modifying the target pressure of the transmission side and the target pressure of the operation side when automatic zero adjustment is completed in a program, finally entering an automatic zero adjustment mode, starting an automatic zero adjustment process, and automatically adjusting the pressure of the transmission side and the pressure of the operation side and the pressure deviation to be within the allowable deviation range of the set target pressure when zero adjustment is completed. The method is convenient for operators to convert the offset adjustment experience summarized according to the actual rolling condition into the zero adjustment process for automatic compensation, can reduce manual advanced intervention operation carried out before steel rolling after the zero adjustment is finished, saves time and can avoid misoperation.
Description
Technical Field
The invention relates to the technical field of metallurgy automatic control, in particular to a zero-adjusting method capable of setting zero-adjusting pressure deviation.
Background
In the actual production process of a hot rolling mill, the temperature of one side, close to a furnace door, of a plate blank is relatively low, the gravity of the transmission side of a rolling mill is relatively large due to a connecting shaft connected with a transmission device, the balance pressure settings of the operation side and the transmission side of a roller are different, the mechanical clearance between the operation side and the transmission side is different, and the like, and experienced operators can summarize that the actual plate blank rolled when the rolling force deviation between the transmission side and the operation side is A tons is flat according to the deviation condition of the plate blank in the production process, and how to convert the experience summarized A ton rolling force deviation into the automatic zero adjustment process, so that the actual plate blank rolled by the rolling mill after the automatic zero adjustment is flat, and the problem needs to be solved in the actual production.
Disclosure of Invention
The invention aims to provide a zero-adjusting method capable of setting zero-adjusting pressure deviation.
The method comprises the steps of firstly setting target pressure deviation when zero adjustment of a transmission side and an operation side is completed on an HMI, then modifying the target pressure of the transmission side and the target pressure of the operation side when automatic zero adjustment is completed in a program, finally entering an automatic zero adjustment mode, starting an automatic zero adjustment process, and automatically adjusting the pressure of the transmission side and the pressure of the operation side and the pressure deviation to be within a set target pressure allowable deviation range when zero adjustment is completed.
The method specifically comprises the following steps:
(1) setting target pressure deviation of a transmission side and an operation side when zero adjustment is completed on the HMI;
(2) modifying the target pressures of the transmission side and the operation side respectively when the automatic zero adjustment is completed in the program;
(3) clicking a zero-adjustment button to enter a zero-adjustment state, then clicking an automatic zero-adjustment button to enter an automatic zero-adjustment mode;
(4) clicking a starting button to start an automatic zero adjustment process;
(5) the roll gap is automatically pressed downwards, and zero adjustment is finished when the difference between the rolling force and the rolling force of the transmission side and the operation side is within the allowable deviation range of the set target pressure and is kept for N seconds;
(6) and clicking the zero-adjustment button again, exiting the zero-adjustment state and finishing the zero adjustment.
Wherein the input range of the target pressure deviation in the step (1) is-50 tons, and the target pressure deviation is determined according to the specific conditions of each rolling mill.
The target pressures of the transmission side and the operation side in the step (2) are respectively as follows:
the transmission side target pressure is equal to zero-adjustment pressure and/2 + zero-adjustment pressure difference/2,
the operating-side target pressure is zero-tuning pressure and/2-zero-tuning pressure difference/2;
and (5) N is the time for the main motor to run at the zero-adjustment speed to rotate the working roller for 2-3 circles.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the zero-adjustment pressure deviation is set on the HMI, the experience that the actual plate blank rolled when the rolling force deviation of the transmission side and the operation side summarized by the operator according to the deviation condition of the plate blank in the production process is flat when the rolling force deviation is A tons is converted into the automatic zero adjustment, so that the plate blank rolled by the rolling mill after the zero adjustment is finished is flat, the manual advanced intervention operation before the steel rolling after the zero adjustment is finished can be reduced, the time is saved, and the misoperation can be avoided.
Drawings
FIG. 1 is a schematic diagram of the operation of a human-computer interaction interface of the method of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a zero-adjusting method capable of setting zero-adjusting pressure deviation.
As shown in FIG. 1, the method firstly sets the target pressure deviation when the zero adjustment of the transmission side and the operation side is completed on the HMI, then modifies the target pressure of the transmission side and the operation side respectively when the automatic zero adjustment is completed in the program, finally enters into the automatic zero adjustment mode, starts the automatic zero adjustment process, and then automatically adjusts the pressure sum and the pressure deviation of the transmission side and the operation side to the set target pressure allowable deviation range when the zero adjustment is completed.
In practical application, the method specifically comprises the following steps:
(1) setting target pressure deviations of the transmission side and the operation side at the time of completion of zero adjustment on the HMI, and in the present embodiment, setting the target pressure deviations of the transmission side and the operation side at the time of completion of zero adjustment to 20 tons;
(2) modifying the target pressure of the transmission side and the target pressure of the operation side when automatic zero adjustment is finished in the program; in the present embodiment, the target pressure on the transmission side is set to 510 tons, and the target pressure on the operation side is set to 490 tons;
(3) clicking a zero-adjustment button to enter a zero-adjustment state, then clicking an automatic zero-adjustment button to enter an automatic zero-adjustment mode;
(4) clicking a starting button to start an automatic zero adjustment process;
(5) the roll gap is automatically pressed downwards, and zero adjustment is finished when the difference between the rolling force and the rolling force of the transmission side and the operation side is within the allowable deviation range of the set target pressure and kept for 6 seconds;
(6) and clicking the zero-adjustment button again, exiting the zero-adjustment state and finishing the zero adjustment.
The method is successfully applied to zero adjustment control of a flat rolling mill in a certain hot rolling mill and is favored by users.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. A zero-tuning method capable of setting zero-tuning pressure deviation is characterized in that: the method comprises the following steps:
(1) setting target pressure deviation of a transmission side and an operation side when zero adjustment is completed on the HMI;
(2) modifying the target pressures of the transmission side and the operation side respectively when the automatic zero adjustment is completed in the program;
(3) clicking a zero-adjustment button to enter a zero-adjustment state, then clicking an automatic zero-adjustment button to enter an automatic zero-adjustment mode;
(4) clicking a starting button to start an automatic zero adjustment process;
(5) the roll gap is automatically pressed downwards, and zero adjustment is finished when the difference between the rolling force and the rolling force of the transmission side and the operation side is within a set target pressure deviation range and is kept for N seconds;
(6) clicking the zero-adjustment button again, exiting the zero-adjustment state, and completing the zero adjustment;
the target pressures of the transmission side and the operation side in the step (2) are respectively as follows:
drive side target pressure = zero tune pressure and/2 + zero tune pressure difference/2;
operating side target pressure = null pressure and/2-null pressure difference/2.
2. The zeroing method of settable zeroing pressure deviations according to claim 1, characterized by: the input range of the target pressure deviation in the step (1) is-50 tons.
3. The zeroing method of settable zeroing pressure deviations according to claim 1, characterized by: and (5) N is the time for the main motor to run at the zero-adjustment speed to rotate the working roller for 2-3 circles.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010498864.6A CN111744969B (en) | 2020-06-02 | 2020-06-02 | Zero-adjusting method capable of setting zero-adjusting pressure deviation |
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| CN202010498864.6A CN111744969B (en) | 2020-06-02 | 2020-06-02 | Zero-adjusting method capable of setting zero-adjusting pressure deviation |
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| CN111744969A CN111744969A (en) | 2020-10-09 |
| CN111744969B true CN111744969B (en) | 2022-04-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4220025A (en) * | 1977-11-21 | 1980-09-02 | Mitsubishi Denki Kabushiki Kaisha | Feed forward automatic thickness controlling method |
| CN101972779A (en) * | 2010-11-05 | 2011-02-16 | 南京钢铁股份有限公司 | Four-roller reversible mill zero position calibrating and roll gap positioning method |
| CN109877165A (en) * | 2019-04-10 | 2019-06-14 | 北京科技大学设计研究院有限公司 | A kind of automatic acyclic homologically trioial method containing roll neck compensating for variations after roll change |
| JP2021064310A (en) * | 2019-10-17 | 2021-04-22 | 三菱パワー株式会社 | Controller setting adjustment device, setting adjustment method, and program |
-
2020
- 2020-06-02 CN CN202010498864.6A patent/CN111744969B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4220025A (en) * | 1977-11-21 | 1980-09-02 | Mitsubishi Denki Kabushiki Kaisha | Feed forward automatic thickness controlling method |
| CN101972779A (en) * | 2010-11-05 | 2011-02-16 | 南京钢铁股份有限公司 | Four-roller reversible mill zero position calibrating and roll gap positioning method |
| CN109877165A (en) * | 2019-04-10 | 2019-06-14 | 北京科技大学设计研究院有限公司 | A kind of automatic acyclic homologically trioial method containing roll neck compensating for variations after roll change |
| JP2021064310A (en) * | 2019-10-17 | 2021-04-22 | 三菱パワー株式会社 | Controller setting adjustment device, setting adjustment method, and program |
Non-Patent Citations (1)
| Title |
|---|
| 宝钢1580PC轧机零调偏差控制研究;徐文军;《中国优秀硕士学位论文全文数据库工程科技I辑》;20090415;第12页 * |
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