CN114798752A - Strip steel and plate-shaped roller slippage judgment method and device based on double-stand temper mill - Google Patents
Strip steel and plate-shaped roller slippage judgment method and device based on double-stand temper mill Download PDFInfo
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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
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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
- B21B37/46—Roll speed or drive motor control
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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
- B21B37/56—Elongation control
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Abstract
The invention relates to the technical field of strip steel processing technology, in particular to a strip steel and plate-shaped roller slippage judgment method and device based on a double-stand temper mill. The method comprises the following steps: acquiring a first strip elongation of the first rack based on the current speeds of the inlet tension roller and the plate-shaped roller; acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller; and judging whether the strip steel slips between the strip steel and the plate-shaped roller or not according to the first strip steel elongation and the second strip steel elongation. The embodiment of the invention accurately discriminates whether the strip steel and the plate-shaped roller skid or not based on the elongation of the strip steel of the first frame and the elongation of the strip steel of the second frame, provides guarantee for rapidly processing faults and ensuring the stable operation of a unit, and solves the technical problem that whether the strip steel and the plate-shaped roller of the double-frame temper mill skid or not can not be accurately detected in the prior art.
Description
Technical Field
The invention relates to the technical field of strip steel processing technology, in particular to a strip steel and plate-shaped roller slippage judgment method and device based on a double-stand temper mill.
Background
The double-frame temper mill undertakes the production and processing tasks of thin bright plates and other plates with higher requirements on the surface evenness of steel. The low-roughness strip steel and the plate-shaped roller are easy to relatively slide, when the strip steel and the plate-shaped roller relatively slide, the surface of the strip steel is scratched, meanwhile, rolling parameters fluctuate, and when the strip steel and the plate-shaped roller relatively slide seriously, a unit is broken, and the stable operation of a production line is influenced.
Therefore, how to accurately detect whether the strip steel slips or not between the strip steel and the plate-shaped roller of the double-frame temper mill is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a method and a device for judging the slippage between strip steel and a plate-shaped roller based on a double-rack temper mill, so as to accurately detect whether the slippage occurs between the strip steel and the plate-shaped roller of the double-rack temper mill.
In order to achieve the above object, the embodiments of the present invention provide the following solutions:
in a first aspect, an embodiment of the present invention provides a method for determining a slip between a strip steel and a plate-shaped roller based on a dual-stand temper mill, where the method includes:
acquiring a first strip elongation of the first frame based on the current speeds of the inlet tension roller and the plate-shaped roller;
acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller;
and judging whether the strip steel slips with the plate-shaped roller or not according to the first strip steel elongation and the second strip steel elongation.
In one possible embodiment, the obtaining the first strip elongation of the first stand based on the current speeds of the entry tension roller and the plate roller includes:
calculating the elongation Elo1 of the first strip steel, wherein the specific calculation formula is as follows:
Elo1＝(V2-V1)/V1*100％；
wherein V1 is the current speed of the upper roller in the inlet tension roller; v2 is the current speed of the plate roll.
In one possible embodiment, the obtaining of the second strip elongation of the second stand based on the current speeds of the exit tension roll and the plate roll includes:
and calculating the elongation rate Elo2 of the second strip steel, wherein the specific calculation formula is as follows:
Elo2＝(V3-V2)/V2*100％；
wherein V3 is the current speed of the upper roller in the outlet tension roller.
In one possible embodiment, said determining whether a slip occurs between the strip and the plate roll based on the first strip elongation and the second strip elongation comprises:
and if the difference between the set elongation of the first frame and the first strip elongation is greater than a first threshold value, and the difference between the second strip elongation and the set elongation of the second frame is greater than a second threshold value, determining that the strip steel and the plate-shaped roller skid.
In a second aspect, an embodiment of the present invention provides a device for determining a slip between a strip steel and a plate-shaped roller based on a double-stand temper mill, where the device includes:
the first acquisition module is used for acquiring the first strip elongation of the first rack based on the current speeds of the inlet tension roller and the plate-shaped roller;
the second acquisition module is used for acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller;
and the first judging module is used for judging whether the strip steel slips with the plate-shaped roller or not according to the first strip steel elongation and the second strip steel elongation.
In a possible embodiment, the first obtaining module includes:
the first calculation module is used for calculating the first strip elongation Elo1, and the specific calculation formula is as follows:
Elo1＝(V2-V1)/V1*100％；
wherein V1 is the current speed of the upper roller in the inlet tension roller; v2 is the current speed of the plate roll.
In a possible embodiment, the second obtaining module includes:
the second calculation module is used for calculating the second strip steel elongation percentage Elo2, and the specific calculation formula is as follows:
Elo2＝(V3-V2)/V2*100％；
wherein V3 is the current speed of the upper roller in the outlet tension roller.
In one possible embodiment, the first determining module includes:
and the first identification module is used for identifying that the strip steel and the plate-shaped roller skid when the difference value between the set elongation of the first rack and the first strip steel elongation is greater than a first threshold value and the difference value between the second strip steel elongation and the set elongation of the second rack is greater than a second threshold value.
In a third aspect, an embodiment of the present invention provides an electronic device, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method for determining the slip of the strip steel and the plate-shaped roll based on the double-stand temper mill in the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the method for determining the slip of the strip and the plate roll based on the dual-stand temper mill in the first aspect.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the method comprises the steps of firstly, acquiring a first strip elongation of a first rack based on the current speeds of an inlet tension roller and a plate-shaped roller; then acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller; and finally, judging whether the strip steel and the plate-shaped roller slide or not according to the first strip steel elongation and the second strip steel elongation. The device accurately discriminates whether the strip steel and the plate-shaped roller skid or not based on the elongation of the strip steel of the first frame and the elongation of the strip steel of the second frame, provides guarantee for rapidly processing faults and guaranteeing stable operation of a unit, and solves the technical problem that whether the strip steel and the plate-shaped roller of the double-frame temper mill skid or not can not be accurately detected in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for determining the slip of a strip steel and a plate-shaped roller based on a double-stand temper mill according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a two-stand temper mill unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an elongation curve of a two-stand temper mill provided in this embodiment;
fig. 4 is a schematic structural diagram of a device for determining the slip of the strip steel and the plate-shaped roller based on a double-stand temper mill in the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for determining a slip of a strip steel and a strip shape roller based on a double-stand temper mill according to an embodiment of the present invention, which is applied to a double-stand temper mill unit, and fig. 2 is a schematic structural diagram of the double-stand temper mill unit according to an embodiment of the present invention, where an inlet tension roller includes a # 1 upper roller and a # 2 lower roller, and an outlet tension roller also includes a # 1 upper roller and a # 2 lower roller, and the method specifically includes steps 11 to 13.
And 11, acquiring the first strip elongation of the first rack based on the current speeds of the inlet tension roller and the plate-shaped roller.
Specifically, speed sensors are arranged on the inlet tension roller and the plate-shaped roller, and the current speeds of the inlet tension roller and the plate-shaped roller can be obtained according to the returned sensing signals. The first stand may be stand No. 1 in fig. 2, the first strip elongation of which is related to the current speeds of the entry tension roll and the plate roll, whereby the first strip elongation of the first stand can be obtained.
In order to improve the working efficiency of the embodiment, a scheme for obtaining the first strip elongation of the first frame by calculation is further provided, and specifically includes step 21.
Step 21, calculating the first strip elongation Elo1, wherein the specific calculation formula is as follows:
Elo1＝(V2-V1)/V1*100％；
wherein V1 is the current speed of the upper roller in the inlet tension roller; v2 is the current speed of the plate roll.
And 12, acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller.
Specifically, speed sensors are arranged on the outlet tension roller and the plate-shaped roller, and the current speeds of the outlet tension roller and the plate-shaped roller can be obtained according to the returned sensing signals. The second stand may be the stand No. 2 in fig. 2, and the second strip elongation of the second stand is related to the current speeds of the exit tension roller and the plate roller, whereby the second strip elongation of the second stand can be obtained.
In order to improve the working efficiency of this embodiment, there is provided a scheme for obtaining the elongation of the second strip steel of the second stand by calculation, which specifically includes step 31.
Step 31, calculating the elongation rate Elo2 of the second strip steel, wherein the specific calculation formula is as follows:
Elo2＝(V3-V2)/V2*100％；
wherein V3 is the current speed of the upper roller in the outlet tension roller.
And step 13, judging whether the strip steel and the plate-shaped roller slide or not according to the first strip steel elongation and the second strip steel elongation.
Specifically, the first strip elongation is related to the current speed of the inlet tension roller and the plate-shaped roller, the second strip elongation is related to the current speed of the outlet tension roller and the plate-shaped roller, when the current speed of the plate-shaped roller is higher than the current speed of the inlet tension roller, the first strip elongation is lower, and when the current speed of the outlet tension roller is higher than the current speed of the plate-shaped roller, the second strip elongation is higher, and the slip between the strip steel and the plate-shaped roller can be determined.
Here, the present embodiment also provides a specific determination basis in step 13, specifically including step 41.
And 41, if the difference between the set elongation of the first frame and the first strip elongation is greater than a first threshold value, and the difference between the second strip elongation and the set elongation of the second frame is greater than a second threshold value, determining that the strip steel slips with the plate-shaped roller.
Specifically, a set elongation percentage Elo1 is correspondingly arranged in the first frame set The first frame can be set at the set elongation Elo1 set Under the control of the control, the proper rolling force is provided to perform surface rolling on the strip steel when the first strip steel elongation Elo1 and the set elongation Elo1 set When the Elo1set-a1 < Elo1 < Elo1set + a1 is satisfied, the steel strip and the plate-shaped roller do not slide relatively. WhereinThe a1 is a first threshold value, which can be obtained by calibration, and in this embodiment, the a1 is 0.2%.
The second frame is correspondingly provided with a set elongation rate Elo2 set The second frame may be at the set elongation Elo2 set Under the control of the control, the proper rolling force is provided to roll the surface of the strip steel when the elongation rate Elo2 of the second strip steel is equal to the set elongation rate Elo2 set When the requirement of Elo2set-a2 < Elo2 < Elo2set + a2 is met, the steel strip and the plate-shaped roller do not slide relatively. Wherein a2 is the second threshold, which can be obtained by calibration, and in this embodiment, a2 is 0.2%.
When Elo1 < Elo1set-a1 and Elo2 > Elo2set + a2 are simultaneously satisfied, it is indicated that the elongation of the first strip steel of the first frame is obviously reduced, the elongation of the second strip steel of the second frame is obviously increased, and at the moment, a slip situation occurs between the strip steel and the plate-shaped roller at a higher probability, so that the determination operation of step 13 is completed in the embodiment.
Application case
In a certain plant, when a strip steel and a plate-shaped roller slide relatively when a bright plate with a thin specification is produced, as shown in fig. 3, a schematic diagram of an elongation curve of a double-stand temper mill provided in this embodiment is shown, wherein an upper half portion of fig. 3 is a schematic diagram of a first strip steel elongation, and a lower half portion of fig. 3 is a schematic diagram of a second strip steel elongation, it can be known by analyzing changes in the elongations of a frame 1 and a frame 2, at a time T1, the elongation of the frame 1 is in a descending trend and is significantly smaller than a set elongation of the frame 1, the elongation of the frame 2 is in an ascending trend and is significantly higher than a corresponding set threshold, and it can be known by a relative sliding determination model of the strip steel and the plate-shaped roller of the double-stand temper mill that the strip steel and the plate-shaped roller slide relatively. At time T2, a tape break event occurs.
Based on the same inventive concept as the method, the embodiment of the invention also provides a device for judging the slip of the strip steel and the plate-shaped roller based on the double-frame temper mill, as shown in fig. 4, the device comprises:
a first obtaining module 51, configured to obtain a first strip elongation of the first rack based on current speeds of the inlet tension roller and the plate roller;
a second obtaining module 52, configured to obtain a second strip elongation of the second rack based on the current speeds of the exit tension roller and the plate roller;
and the first judging module 53 is used for judging whether the slip between the strip steel and the plate-shaped roller occurs or not according to the first strip steel elongation and the second strip steel elongation.
In a possible embodiment, the first obtaining module includes:
the first calculation module is used for calculating the first strip elongation Elo1, and the specific calculation formula is as follows:
Elo1＝(V2-V1)/V1*100％；
wherein V1 is the current speed of the upper roller in the inlet tension roller; v2 is the current speed of the plate roll.
In a possible embodiment, the second obtaining module includes:
the second calculation module is used for calculating the second strip steel elongation percentage Elo2, and the specific calculation formula is as follows:
Elo2＝(V3-V2)/V2*100％；
wherein V3 is the current speed of the upper roller in the outlet tension roller.
In one possible embodiment, the first determining module includes:
and the first identification module is used for identifying that the strip steel and the plate-shaped roller skid when the difference value between the set elongation of the first rack and the first strip steel elongation is greater than a first threshold value and the difference value between the second strip steel elongation and the set elongation of the second rack is greater than a second threshold value.
Based on the same inventive concept as that in the previous embodiment, an embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements any of the steps of the method for determining the slip of the strip steel and the plate-shaped roller based on the two-stand temper mill when executing the program.
Based on the same inventive concept as the previous embodiment, an embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements any of the steps of the method for determining the slip of the strip steel and the plate-shaped roll based on the dual-stand temper mill.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
the method comprises the steps of firstly, acquiring a first strip elongation of a first rack based on the current speeds of an inlet tension roller and a plate-shaped roller; then acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller; and finally, judging whether the strip steel and the plate-shaped roller slide or not according to the first strip steel elongation and the second strip steel elongation. The embodiment of the invention accurately discriminates whether the strip steel and the plate-shaped roller skid or not based on the elongation of the strip steel of the first frame and the elongation of the strip steel of the second frame, provides guarantee for rapidly processing faults and ensuring the stable operation of a unit, and solves the technical problem that whether the strip steel and the plate-shaped roller of the double-frame temper mill skid or not can not be accurately detected in the prior art.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. 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 computer, 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 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 invention.
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 invention. 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. A method for judging the slippage of a strip steel and a plate-shaped roller based on a double-frame temper mill is characterized by comprising the following steps:
acquiring a first strip elongation of the first frame based on the current speeds of the inlet tension roller and the plate-shaped roller;
acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller;
and judging whether the strip steel slips with the plate-shaped roller or not according to the first strip steel elongation and the second strip steel elongation.
2. The method for determining the slip of the strip steel and the plate-shaped roll based on the double-stand temper mill as claimed in claim 1, wherein the step of obtaining the first strip elongation of the first stand based on the current speeds of the inlet tension roll and the plate-shaped roll comprises the steps of:
calculating the elongation Elo1 of the first strip steel, wherein the specific calculation formula is as follows:
Elo1＝(V2-V1)/V1*100％；
wherein V1 is the current speed of the upper roller in the inlet tension roller; v2 is the current speed of the plate roll.
3. The double-stand temper mill-based strip steel and strip shape roller slippage determination method according to claim 2, wherein the step of obtaining the second strip steel elongation of the second stand based on the current speeds of the outlet tension roller and the strip shape roller comprises the steps of:
and calculating the elongation rate Elo2 of the second strip steel, wherein the specific calculation formula is as follows:
Elo2＝(V3-V2)/V2*100％；
wherein V3 is the current speed of the upper roller in the outlet tension roller.
4. The method for determining the slipping between the strip steel and the plate-shaped roll based on the double-stand temper mill according to any one of claims 1 to 3, wherein the determining whether the slipping occurs between the strip steel and the plate-shaped roll according to the first strip steel elongation and the second strip steel elongation comprises:
and if the difference between the set elongation of the first frame and the first strip elongation is greater than a first threshold value, and the difference between the second strip elongation and the set elongation of the second frame is greater than a second threshold value, determining that the strip steel and the plate-shaped roller skid.
5. The utility model provides a belted steel and plate-shaped roller decision maker that skids based on duplex frame levelling machine which characterized in that, the device includes:
the first acquisition module is used for acquiring the first strip elongation of the first rack based on the current speeds of the inlet tension roller and the plate-shaped roller;
the second acquisition module is used for acquiring a second strip steel elongation of the second rack based on the current speeds of the outlet tension roller and the plate-shaped roller;
and the first judging module is used for judging whether the strip steel slips with the plate-shaped roller or not according to the first strip steel elongation and the second strip steel elongation.
6. The device for determining the slippage of the strip steel and the plate-shaped roller based on the double-stand temper mill as claimed in claim 5, wherein the first acquiring module comprises:
the first calculation module is used for calculating the first strip elongation Elo1, and the specific calculation formula is as follows:
Elo1＝(V2-V1)/V1*100％；
wherein V1 is the current speed of the upper roller in the inlet tension roller; v2 is the current speed of the plate roll.
7. The device for determining the slippage of the strip steel and the plate-shaped roller based on the double-frame temper mill as claimed in claim 6, wherein the second acquiring module comprises:
the second calculation module is used for calculating the second strip steel elongation percentage Elo2, and the specific calculation formula is as follows:
Elo2＝(V3-V2)/V2*100％；
wherein V3 is the current speed of the upper roller in the outlet tension roller.
8. The device for determining the slippage of the strip steel and the plate-shaped roller based on the double-stand temper mill as claimed in any one of claims 5 to 7, wherein the first determination module comprises:
and the first identification module is used for identifying that the strip steel and the plate-shaped roller skid when the difference value between the set elongation of the first rack and the first strip steel elongation is greater than a first threshold value and the difference value between the second strip steel elongation and the set elongation of the second rack is greater than a second threshold value.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for executing the computer program to carry out the steps of the method of any one of claims 1 to 4.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| CN202210383800.0A CN114798752B (en) | 2022-04-12 | 2022-04-12 | Strip steel and plate roller slip judging method and device based on double-rack leveling machine |
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| CN202210383800.0A CN114798752B (en) | 2022-04-12 | 2022-04-12 | Strip steel and plate roller slip judging method and device based on double-rack leveling machine |
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