CN114453429A - Switching control method, device, medium and equipment for headless rolling mode - Google Patents
Switching control method, device, medium and equipment for headless rolling mode Download PDFInfo
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- CN114453429A CN114453429A CN202210033834.7A CN202210033834A CN114453429A CN 114453429 A CN114453429 A CN 114453429A CN 202210033834 A CN202210033834 A CN 202210033834A CN 114453429 A CN114453429 A CN 114453429A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 147
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 238000010008 shearing Methods 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000005266 casting Methods 0.000 claims abstract description 23
- 238000004590 computer program Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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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
Abstract
The invention provides a method, a device, a medium and equipment for controlling the switching of a headless rolling mode, wherein the method comprises the following steps: when the rolling mode is a headless rolling mode, judging whether the pendulum shear at the outlet of the casting machine is started; if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected; if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode; therefore, whether the headless rolling mode is finished or not is determined by detecting whether the pendulum shear at the outlet of the casting machine finishes shearing or not, the finishing time of the headless rolling mode can be effectively identified, the headless rolling mode is switched to the semi-headless rolling mode in time, relevant rolling parameters are switched to the rolling parameters corresponding to the semi-headless rolling mode, the speed and the temperature of the strip steel of a rolling production line are ensured to be in normal states, and the quality of the strip steel is ensured.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a method, a device, a medium and equipment for controlling switching of endless rolling modes.
Background
The endless rolling technology of the hot-rolled plate strip is an innovation of steel production technology, can realize the on-line variable-specification rolling of strip steel, enables the thin-specification rolling to be smoother, enables the ultrathin-specification rolling to be possible, and achieves remarkable achievement in the aspect of partially replacing cold with heat.
In the rolling process, the accurate judgment of the rolling mode is very critical, once the endless rolling is not timely and accurately identified after the endless mode is finished, the related rolling parameters cannot be timely adjusted, the abnormal speed and temperature control of the strip steel of the whole rolling production line can be caused, the collision of front and rear plate blanks can be seriously caused, the quality of the strip steel is influenced, and even the rolling line equipment is damaged.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method, a device, a medium and equipment for controlling switching of a headless rolling mode, which are used for solving the technical problems that related rolling parameters cannot be adjusted in time and further the speed and the temperature of strip steel of the whole rolling production line are abnormal and the quality of the strip steel cannot be ensured because the rolling end of the headless rolling mode cannot be accurately identified in the prior art.
The invention provides a switching control method of a headless rolling mode, which comprises the following steps:
when the rolling mode is a headless rolling mode, judging whether the pendulum shear at the outlet of the casting machine is started;
if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
and if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode.
In the foregoing solution, the determining that the cropping completion signal is detected includes:
and if the shearing angle of the pendulum shear is determined to be [ -3 degrees, 3 degrees ], determining that the shearing completion signal is detected.
In the foregoing scheme, after the headless rolling mode is switched to the semi-headless rolling mode, the method further includes:
and acquiring the side speed of the rolling mill, and adjusting the running speed of the strip steel based on the side speed of the rolling mill.
In the above scheme, the determining the starting of the pendulum shear includes:
and if the pendulum shear signal is consistent with a preset starting signal, determining that the pendulum shear is started.
The invention provides a switching control device of endless rolling mode, comprising:
the determining unit is used for judging whether the pendulum shear at the outlet of the casting machine is started or not when the rolling mode is the headless rolling mode; if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
and the switching unit is used for switching the endless rolling mode to a semi-endless rolling mode if the shearing completion signal is determined to be detected.
In the foregoing solution, the determining unit is specifically configured to:
and if the shearing angle of the pendulum shear is determined to be [ -3 degrees, 3 degrees ], determining that the shearing completion signal is detected.
In the above scheme, the apparatus further comprises:
and the adjusting unit is used for acquiring the side speed of the rolling mill and adjusting the running speed of the strip steel based on the side speed of the rolling mill.
In the foregoing solution, the determining unit is specifically configured to:
and if the pendulum shear signal is consistent with a preset starting signal, determining that the pendulum shear is started.
The invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the above.
The invention also provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of the above when executing the program.
The invention provides a method, a device, a medium and equipment for controlling the switching of a headless rolling mode, wherein the method comprises the following steps: when the rolling mode is a headless rolling mode, judging whether the pendulum shear at the outlet of the casting machine is started; if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected; if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode; therefore, whether the headless rolling mode is finished or not is determined by detecting whether the pendulum shear at the outlet of the casting machine finishes shearing or not, the finishing time of the headless rolling mode can be effectively identified, the headless rolling mode is switched to the semi-headless rolling mode in time, relevant rolling parameters are switched to the rolling parameters corresponding to the semi-headless rolling mode, the speed and the temperature of the strip steel of a rolling production line are ensured to be in normal states, and the quality of the strip steel is ensured.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic flow chart of a control method for switching between endless rolling modes according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a switching control device for headless rolling mode according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a computer device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
The invention provides a method, a device, a medium and computer equipment for controlling switching of a headless rolling mode, and aims to solve the technical problems that related rolling parameters cannot be adjusted in time due to the fact that the rolling end of the headless rolling mode cannot be accurately identified in the prior art, so that the speed and the temperature of strip steel of a whole rolling production line are abnormal, and the quality of the strip steel cannot be ensured.
In order to better understand the technical solutions of the embodiments of the present specification, the technical solutions of the embodiments of the present specification are described in detail below with reference to the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and examples of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations of the technical solutions of the embodiments and examples of the present specification, and the technical features of the embodiments and examples of the present specification may be combined with each other without conflict.
The present embodiment provides a method for controlling switching of headless rolling modes, as shown in fig. 1, the method includes:
s110, judging whether the pendulum shear at the outlet of the casting machine is started or not when the rolling mode is a headless rolling mode;
in order to better understand the technical solution of the present application, the rolling process of the lower hot rolling line is described first. The hot rolling production line comprises a casting machine, a heating furnace, a rolling mill and other auxiliary equipment (such as dephosphorization and cooling equipment); the casting machine is used for casting blanks, and a pendulum shear is arranged at the outlet of the casting machine; the heating furnace is used for heating the plate blank to a preset temperature and then conveying the plate blank into the rolling mill for rolling. When the rolling mode is a headless rolling mode, the casting machine outputs continuous slabs; when the rolling mode is a semi-headless rolling mode, the swing shears can shear the plate blank based on preset control measurement and control, and further form a plurality of segmented plate blanks, wherein the length of each segment of the plate blank is greater than the length of a unit plate blank.
It should be noted that, in the headless rolling mode and the semi-headless rolling mode, corresponding rolling parameters (for example, the speed and the temperature of the strip steel are different), so when the headless rolling mode is finished, the rolling parameters need to be accurately identified so as to switch the corresponding rolling parameters in time.
Therefore, the present embodiment determines whether the pendulum shear at the outlet of the casting machine is activated when the rolling mode is the endless rolling mode.
Specifically, when the headless rolling mode is always in operation, the pendulum shear does not need to be operated, and when the pendulum shear has an activation signal in the headless rolling mode, it indicates that the headless rolling mode is about to be ended.
In an alternative embodiment, determining pendulum shear activation comprises:
and if the pendulum shear signal is consistent with the preset starting signal, determining that the pendulum shear is started.
In practical application, the pendulum shear signal needs to be monitored in real time, and when the pendulum shear stops, the pendulum shear signal is a stop signal, for example, 0; if the pendulum shear is started, the pendulum shear signal jumps to a starting signal, for example, 1. therefore, if the pendulum shear signal is determined to be consistent with a preset starting signal, the pendulum shear is determined to be started.
S111, if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected, and if the shear completion signal is determined to be detected, determining that the endless rolling mode is ended; at this time, the rolling mode needs to be switched.
And S112, if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode.
In an alternative embodiment, determining that a cut complete signal is detected comprises:
and if the shearing angle of the pendulum shear is determined to be [ -3 degrees, 3 degrees ], determining that a shearing completion signal is detected. Wherein, the shearing angle is the angle between two shearing blades of the pendulum shear.
In practical application, when the pendulum shear finishes shearing, the shear blade is in a closed state, so when the shearing angle is between [ -3 degrees, 3 degrees ], the shearing is finished, and a shearing completion signal is detected.
And after the shearing is determined to be finished, the headless rolling mode is indicated to be finished, and the headless rolling mode is switched to a semi-headless rolling mode so as to adjust the rolling parameters in time.
In an alternative embodiment, after switching the endless rolling mode to the semi-endless rolling mode, the method further comprises: and acquiring the side speed of the rolling mill, and adjusting the running speed of the strip steel based on the side speed of the rolling mill.
Specifically, in the headless mode, the strip speed of the entire production line is controlled based on the casting machine pull rate, since the entire production line is now a continuous strip and the entire strip speed is completely limited by the casting machine speed, and therefore both roll line speed control and temperature control are based on the casting machine speed.
Once the swing shears cut the strip steel, namely after the mode is switched to the semi-headless mode from the headless mode, after the separation of the strip steel at the front part and the slab of the casting machine is confirmed, the rolling mill needs to carry out speed increase at a speed, and the purpose is to pull the distance between the strip steel at the front part cut by the swing shears and the adjacent cut strip steel back and forth so as to avoid the strip steel from colliding, so the speed control at the moment when the strip steel at the front part (the strip steel entering the rolling mill side) is based on the speed at the rolling mill side to carry out speed increase control.
Here, if the rolling mill is a five-stand rolling mill, the rolling mill includes, from the strip running direction: the machine frame comprises an F1 machine frame, an F2 machine frame, an F3 machine frame, an F4 machine frame and an F5 machine frame, so that the running speed of the strip steel at the current front piece can be adjusted by taking the speed of the F5 machine frame as a reference, the matching of the second flow of the strip steel is maintained, and the phenomena of missing of the stretch sleeve and the like are prevented.
After the running speed of the strip steel is adjusted, the speed of the strip steel is increased equivalently, the endless plate blank can run forwards quickly, the current fast plate blank is prevented from colliding with the next plate blank, the quality of the plate blank is ensured, and meanwhile, the damage to the rolling line equipment is avoided.
According to the switching control method for the headless rolling mode, whether the headless rolling mode is completed or not is determined by detecting whether the pendulum shear at the outlet of the casting machine completes shearing or not, the end time of the headless rolling mode can be effectively identified, the headless rolling mode is timely switched to the semi-headless rolling mode, the related rolling parameters are switched to the rolling parameters corresponding to the semi-headless rolling mode, the speed and the temperature of the strip steel of a rolling production line are ensured to be in normal states, and the quality of the strip steel is ensured.
Based on the same inventive concept, the present embodiment further provides a switching control device based on a rolling mode, as shown in fig. 2, the device includes:
a determining unit 21, configured to determine whether a pendulum shear at an outlet of the casting machine is started when the rolling mode is a headless rolling mode; if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
a switching unit 22, configured to switch the endless rolling mode to a semi-endless rolling mode if it is determined that the shearing completion signal is detected.
The specific functions of the above units can be referred to the corresponding descriptions in the above method embodiments, and are not described herein again. Since the apparatus described in the embodiment of the present invention is an apparatus used for implementing the method in the embodiment of the present invention, a person skilled in the art can understand the specific structure and the deformation of the apparatus based on the method described in the embodiment of the present invention, and thus the detailed description is omitted here. All devices used in the method of the embodiment of the present invention belong to the protection scope of the present invention.
Based on the same inventive concept, the present embodiment provides a computer apparatus 300, as shown in fig. 3, including a memory 310, a processor 320, and a computer program 311 stored on the memory 310 and operable on the processor 320, wherein the processor 320 executes the computer program 311 to implement the following steps:
when the rolling mode is a headless rolling mode, judging whether the pendulum shear at the outlet of the casting machine is started;
if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
and if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode.
In particular embodiments, any of the foregoing embodiments may be implemented when processor 320 executes computer program 311.
Since the computer device described in this embodiment is a device used for implementing a rolling method according to an embodiment of the present application, a specific implementation manner of the computer device of this embodiment and various modifications thereof can be understood by those skilled in the art based on the methods described in the foregoing embodiments of the present application, and therefore, a detailed description of how the server implements the method according to the embodiment of the present application is not provided herein. The equipment used by those skilled in the art to implement the methods in the embodiments of the present application is within the scope of the present application.
Based on the same inventive concept, the present embodiment provides a computer-readable storage medium 400, as shown in fig. 4, on which a computer program 411 is stored, the computer program 411 implementing the following steps when being executed by a processor:
when the rolling mode is a headless rolling mode, judging whether the pendulum shear at the outlet of the casting machine is started;
if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
and if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode.
In a specific implementation, the computer program 411 may implement any of the foregoing embodiments when executed by a processor.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application 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 alterations and modifications as fall within the scope of the application.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A method for controlling switching of endless rolling modes, the method comprising:
when the rolling mode is a headless rolling mode, judging whether the pendulum shear at the outlet of the casting machine is started;
if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
and if the shearing completion signal is determined to be detected, switching the endless rolling mode to a semi-endless rolling mode.
2. The method of claim 1, wherein the determining that a cut complete signal is detected comprises:
and if the shearing angle of the pendulum shear is determined to be [ -3 degrees, 3 degrees ], determining that the shearing completion signal is detected.
3. The method of claim 1, wherein after said switching said endless rolling mode to a semi-endless rolling mode, the method further comprises:
and acquiring the side speed of the rolling mill, and adjusting the running speed of the strip steel based on the side speed of the rolling mill.
4. The method of claim 1, wherein the determining that the pendulum shear is activated comprises:
and if the pendulum shear signal is consistent with a preset starting signal, determining that the pendulum shear is started.
5. A device for controlling switching of endless rolling modes, said device comprising:
the determining unit is used for judging whether the pendulum shear at the outlet of the casting machine is started or not when the rolling mode is the headless rolling mode; if the pendulum shear is determined to be started, continuously judging whether a shear completion signal is detected;
and the switching unit is used for switching the endless rolling mode to a semi-endless rolling mode if the shearing completion signal is determined to be detected.
6. The apparatus as claimed in claim 5, wherein said determining unit is specifically configured to:
and if the shearing angle of the pendulum shear is determined to be [ -3 degrees, 3 degrees ], determining that the shearing completion signal is detected.
7. The apparatus of claim 5, wherein the apparatus further comprises:
and the adjusting unit is used for acquiring the side speed of the rolling mill and adjusting the running speed of the strip steel based on the side speed of the rolling mill.
8. The apparatus of claim 5, wherein the determination unit is specifically configured to:
and if the pendulum shear signal is consistent with a preset starting signal, determining that the pendulum shear is started.
9. A storage medium on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method of any one of claims 1 to 4.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1 to 4 when executing the program.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210033834.7A CN114453429A (en) | 2022-01-12 | 2022-01-12 | Switching control method, device, medium and equipment for headless rolling mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210033834.7A CN114453429A (en) | 2022-01-12 | 2022-01-12 | Switching control method, device, medium and equipment for headless rolling mode |
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| CN202155365U (en) * | 2011-05-24 | 2012-03-07 | 河北钢铁集团有限公司 | Steel-billet solid-state connecting apparatus for use in endless rolling process |
| KR20150080942A (en) * | 2013-12-26 | 2015-07-13 | 주식회사 포스코 | Skillful control apparatus and control method for the continuous casting |
| CN207325584U (en) * | 2017-10-14 | 2018-05-08 | 北京首钢国际工程技术有限公司 | A kind of flexible long material endless rolling device |
| CN113857242A (en) * | 2021-10-22 | 2021-12-31 | 中冶赛迪工程技术股份有限公司 | Continuous casting and rolling production line and ferrite rolling low-carbon steel production method thereof |
-
2022
- 2022-01-12 CN CN202210033834.7A patent/CN114453429A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| CN202155365U (en) * | 2011-05-24 | 2012-03-07 | 河北钢铁集团有限公司 | Steel-billet solid-state connecting apparatus for use in endless rolling process |
| KR20150080942A (en) * | 2013-12-26 | 2015-07-13 | 주식회사 포스코 | Skillful control apparatus and control method for the continuous casting |
| CN207325584U (en) * | 2017-10-14 | 2018-05-08 | 北京首钢国际工程技术有限公司 | A kind of flexible long material endless rolling device |
| CN113857242A (en) * | 2021-10-22 | 2021-12-31 | 中冶赛迪工程技术股份有限公司 | Continuous casting and rolling production line and ferrite rolling low-carbon steel production method thereof |
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