Method for establishing axial force database of hot finishing mill

Abstract

The invention provides a method for establishing an axial force database of a hot rolling finishing mill. The method comprises the steps that the magnitude of axial force generated by a current hot rolling production line finishing mill is monitored in real time; establishing an axial force database according to the magnitude of the axial force; monitoring result data are stored, and finally axial force data are intensively displayed in an axial force data analysis platform through data processing, so that professional technicians can inquire and know the axial force state of the finishing mill at any time. By establishing the axial force database, the management control functions of collecting and storing all axial force related data and performing big data analysis are realized, the current equipment condition of the rolling mill can be analyzed more intuitively, possible reasons of equipment state degradation can be dealt with in time, and high-quality stable production of a production line is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling mills, and particularly to a method for establishing an axial force database of a hot rolling finishing mill. Background Art

[0002] In recent years, with the development of a series of technologies such as sensor technology, industrial Internet of Things, artificial intelligence, and big data analysis, we can understand the process of problem generation, the resulting impacts, and the solutions from a brand-new perspective. Combining with the online production process data, taking the axial force of the finishing mill as the entry point, this article combines the real-time nature of dynamic precision data and the intuitiveness of static precision data, uses big data tools to explore the internal correlations of the data, and analyzes the deterioration trends and causes of the equipment. Among them, the generation of the axial force of the rolling mill is a common production defect in the rolling process. The axial force not only has a certain destructive effect on the rolling mill, but may even affect the service life, safety, and normal operation of the rolling mill seriously. Therefore, the axial force is an important measurement basis for rolling stability in the state management of the rolling mill. However, due to factors such as the complex measurement and data acquisition process of the axial force, the huge amount of data, and the difficulty in preservation, it brings great difficulties to the monitoring, acquisition, analysis, positioning, and improvement of the axial force value of the rolling mill.

[0003] With the gradual increase in production, while meeting the production process requirements, the production line also has higher requirements for the quality of hot-rolled products. Therefore, when creating high-quality and high-grade products, the deficiencies of the rolling mill equipment are exposed. For example, the wear rate of the rolling mill in the hot rolling production line is relatively fast, and the rolling mill gap problem, that is, the rolling mill stiffness decreases relatively fast. Therefore, it is very difficult to ensure that the rolling mill is always in a good stable state, and the stability of the rolling mill is a key factor affecting the production efficiency and product quality of the hot rolling production line; based on the current production line equipment, only simple detection, simple viewing of a single stand, or the axial force results detected at that time can be carried out, and the best and most effective role of the axial force cannot be exerted. The work rolls of the finishing mill use CVC rolling mills, and these work rolls adopt special roll profile curves, which change the contact situation between the rolls and the rolled piece, and are more likely to generate a certain axial force during the rolling process. That is, there is a phenomenon of axial movement of the rolls in the finishing mill, which will cause the CVC pass center of the rolls not to coincide, and the rolls will have misalignment. Due to the change of the pass, the slab will undergo abnormal deformation when passing through, resulting in deviation of the rolled product. This deviation is ultimately reflected as a defect of the product, directly affecting the product quality and ultimately the production efficiency of the product. If not discovered or improved in time, the accumulation of the axial force will further cause the equipment to be impacted, affecting the accuracy of the equipment itself. And obtaining accurate axial rolling force is the key to the maintenance of the rolling mill system equipment and the effective prevention of the deviation of the rolled piece. Summary of the Invention

[0004] To solve the above problems, the object of the present invention is to provide a method for establishing an axial force database of a hot rolling finishing mill.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A method for establishing an axial force database of a hot rolling finishing mill, comprising:

[0007] Real-time monitoring of the magnitude of the axial force generated by the finishing mill of the current hot rolling production line;

[0008] Establishing an axial force database according to the magnitude of the axial force;

[0009] Displaying the axial force data in the axial force database on the axial force data analysis platform for professional technicians to query the axial force status of the finishing mill at any time.

[0010] Preferably, establishing an axial force database according to the magnitude of the axial force includes:

[0011] Judging whether there is a function for detecting and counting the axial force of the relevant rolling mill in the program design logic of the current TMEIC rolling mill system;

[0012] Adding a data field for collecting axial force in the rolling mill system program to collect actual axial force detection data;

[0013] Including the information of the working rolls and backup rolls bearing seats of the rolling mill and their corresponding actual axial force detection data into the axial force database.

[0014] Preferably, displaying the axial force data in the axial force database on the axial force data analysis platform for professional technicians to query the axial force status of the finishing mill at any time includes:

[0015] Integrating and displaying the axial force data in the database on the screen of the hot rolling axial force information analysis platform;

[0016] Testing whether the axial force collection data field is normal and whether the data storage is normal during the maintenance period of the finishing mill;

[0017] When both the axial force collection data field and the data storage are normal, putting the hot rolling axial force information analysis platform into use to facilitate the real-time display, query at any time, timely analysis and status monitoring of the axial force data.

[0018] The present invention also provides a computer-readable storage medium, on which a computer program is stored, characterized in that when the computer program is executed by a processor, the steps in the above method for establishing an axial force database of a hot rolling finishing mill are implemented.

[0019] According to the specific embodiments provided by the present invention, the following technical effects are disclosed by the present invention:

[0020] The present invention provides a method for establishing an axial force database of a hot rolling finishing mill. Compared with the prior art, by establishing the axial force database, the present invention realizes the management and control functions of collecting, storing all axial force-related data and performing big data analysis, can more intuitively analyze the current equipment status of the rolling mill, timely respond to the possible reasons for the deterioration of the equipment status, and realize high-quality and stable production of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a flowchart of a method for establishing an axial force database of a hot rolling finishing mill provided by the present invention;

[0023] Figure 2 It is a schematic diagram of storing the axial force PONG curve provided by the present invention;

[0024] Figure 3 It is a schematic diagram of storing the POND file by implementing the first modified TMEIC source program provided by the present invention;

[0025] Figure 4 It is a schematic diagram of storing the POND file by implementing the second modified TMEIC source program provided by the present invention;

[0026] Figure 5 It is a schematic diagram of storing the POND file by implementing the third modified TMEIC source program provided by the present invention;

[0027] Figure 6 It is a schematic diagram of adding axial force-related fields to the data dictionary provided by the present invention;

[0028] Figure 7 It is a schematic diagram of calculating the average value of the axial force of each stand provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] The present invention provides a method for monitoring, collecting the axial force values of each stand and storing them in a database, and finally displaying them on an axial force data analysis platform, which can monitor in real time the magnitude of the axial force generated by the finishing mill of the current hot rolling production line, establish an axial force database to store the monitored result data, and finally centrally display the axial force data on the axial force data analysis platform through data processing for professional technicians to query at any time to understand the axial force state of the finishing mill. This invention changes the previous embarrassing situation where it was impossible to accurately grasp whether the finishing mill had generated axial force, how much axial force was generated, and how much impact it had on the production line. It realizes real-time monitoring of the axial force of the finishing mill and stores the collected monitored result data in the database system. By analyzing the single detection result or through big data analysis of the cumulative data in a roll change cycle or even longer time, it statistically analyzes the current axial force state of the rolling mill and the trend change of the state of equipment such as the rolling mill. It provides data support for equipment maintenance and management personnel to more efficiently understand the axial force conditions of each stand of the finishing mill, control the accuracy deviation of the rolling mill, and information such as the corresponding bearing block number and horizontal correction of the rolling mill, clarifies the equipment maintenance direction and maintenance cycle, realizes more precise control of the rolling mill accuracy, and ensures high-quality and high-efficiency production of the hot rolling production line.

[0031] The present invention provides a method for detecting, collecting the axial force values of each stand and storing them in a database, and finally displaying them on an axial force data analysis platform, including:

[0032] 1. Study the program design logic of the current TMEIC rolling mill system to confirm whether there is a function for detecting and counting the axial force of the rolling mill;

[0033] 2. Add data fields for axial force collection in the rolling mill system program, and modify the original design configuration file of the rolling mill secondary TMEIC to add 14 configuration parameters for axial force;

[0034] 3. Modify the process script file to collect the actual detected data of the axial force of 7 stands;

[0035] 4. Design an algorithm program to calculate the average value of the axial force after each stand casts steel;

[0036] 5. Establish a database, incorporate information such as the working rolls and backup roll bearing blocks of the rolling mill into the axial force database and establish corresponding data fields;

[0037] 6. Newly establish storage fields for relevant data such as axial force in the data dictionary,

[0038] 7. Store the measured value and calculation result of the axial force in the database to realize the big data storage and analysis of the axial force. The data storage time limit is 1 year.

[0039] 8. Use functions such as computing programming languages and EXECL data collection and reading to design and develop an information-based analysis platform for the axial force of the 2250mm hot rolling mill;

[0040] 9. Program debugging test. Integrate the axial force data in the database and display it on this screen to facilitate the real-time display, query at any time, timely analysis, and status monitoring of the axial force data.

[0041] 11. During the maintenance period, test whether the axial force data detection fields are normal and whether the data storage is normal.

[0042] 12. Connect the 2250mm hot rolling axial force information analysis platform to the axial force database.

[0043] 13. Test the display, query and other functions of the 2250mm hot rolling axial force information analysis platform.

[0044] 13. After the axial force and the 2250mm hot rolling axial force information analysis platform are successfully tested, conduct an online trial operation for two weeks. After there are no problems such as data connection interruption, program abnormal termination, and data acquisition abnormality during the operation process, officially go online and put it into use.

[0045] The present invention will be described below in conjunction with specific embodiments:

[0046] 1. Modify the configuration file pondmanager.cfg in the mill level 2 source program to add 14 configuration parameters for axial force, clear all SHM, and then restart the PondManager process.

[0047] 2. Modify GAT_JOB and TRK_JOB in the mill level 2 source program to implement the saving of 7 POND files.

[0048] 3. Modify the data dictionary DD and add the average values of 7 axial forces in the table R_FMACT.

[0049] 4. Modify the table R_FMACT in the database to add the average values of 7 axial forces.

[0050] 5. Modify the GAT_JOB in the mill level 2 source program to add the calculation of the average axial force after each stand casts off the steel.

[0051] 6. Modify the EDS database R_FMACT to add the average values of 7 axial forces.

[0052] 7. Establish a 2250mm hot rolling axial force analysis platform to realize the display of data.

[0053] The technical solution of the present invention will be further described below in conjunction with specific drawings:

[0054] 1. In the present invention, 14 axial force data monitoring parameters need to be configured. These parameters start monitoring and recording the axial force changes of each stand when rolling each slab in the finishing mill, and at the same time store them in the database, making up for the deficiency that the axial force state of the rolling mill could not be viewed in digital form in the past;

[0055] 2. Refer to Figure 2 , by optimizing the GAT_JOB and TRK_JOB programs in the mill level 2 source program, the axial force data is stored in the form of a POND file. Taking a coil as a unit, the axial force state of each stand during the rolling of this coil can be queried through the coil number;

[0056] 3. Refer to Figure 3 , Figure 4 , Figure 5 , which are parts of the GAT_JOB and TRK_JOB programs in the optimized mill level 2 source program;

[0057] 4. Refer to Figure 6 , a schematic diagram of the fields related to the axial force is added to the data dictionary, and corresponding fields are added according to the newly added configuration parameters in the data dictionary.

[0058] 5. Refer to Figure 7 , which is a program for calculating the average axial force added after each stand casts off the steel after optimizing the GAT_JOB program in the mill level 2 source program.

[0059] 6. The axial force database table established in the embodiment of the present invention, the parameters therein include coil number, production time, work roll number, axial forces of each stand, average axial force, and other related parameters.

[0060] 7. Through program design and development, interface design, and connecting to the database, the collected axial force data is displayed one by one on the interface of the 2250mm hot rolling axial force analysis platform in units of each coil of steel.

[0061] The present invention introduces a method for establishing an axial force database of a hot rolling finishing mill. By modifying the original design configuration file of the mill's secondary TMEIC, 14 axial force configuration parameters are added, and the process script file is modified to collect the actual detection data of the axial forces of 7 stands, and the detection data is stored in the database in real time. The data acquisition of the axial force database of the finishing mill is stored in cycles of one slab. During the process of the finishing mill rolling the slab, the axial force changes of each stand are detected in real time and stored in the database. At the same time, the axial force changes of each coil of steel are stored as a file in the form of a PONG curve. The axial force data analysis takes one rolling unit of work roll changing as one axial force acquisition cycle. Through the data collection of the axial forces in the actual rolling process, the representative average axial force of the rolling process is calculated. In this way, two axial force average values of the upper roll and the lower roll can be obtained for each rolling unit in the rolling process. After accumulating a large amount of detection data, the clearance state of the bearing seat can be accurately predicted. At the same time, by statistically analyzing the axial force information of the backup roll bearing seat, the clearance state information of the backup roll bearing seat can also be obtained, so as to realize the accurate identification and prediction of the clearance state of the mill. At the same time, the axial force data of each slab collected is stored in a fixed path in the form of a POND curve for easy temporary viewing. Based on this data, computer program design and development are carried out to establish a hot rolling axial force data analysis platform to integrally display data information such as the slab number, coil number, production time, work roll numbers of each stand in the finishing mill, and the inlet and outlet axial forces of each stand of the current production slab, so that relevant technical personnel such as process and equipment can observe and monitor the axial force changes in real time through the platform screen, and can also manually input the time according to needs to obtain the axial force changes of a certain set of work rolls or a certain period of time or a certain coil of steel, and display the axial force state of the mill in a digital form, which is more helpful for on-site equipment maintenance personnel to clearly understand the equipment state, so as to clarify the equipment maintenance method and optimization direction, carry out targeted maintenance improvements, and improve the equipment maintenance efficiency and the online life of the equipment.

[0062] In summary, by using the present invention to establish an axial force database, the management and control functions of collecting, storing all axial force-related data and performing big data analysis are realized. The parallelism of the mill can be timely grasped. According to the magnitude, position and direction of the generated axial force, the current equipment condition of the mill can be more intuitively analyzed, the possible reasons for the deterioration of the equipment state can be timely responded to, and the optimal solution can be more efficiently adopted to maintain the equipment, ensuring that the mill is in a good stable operation state, so as to achieve higher mill accuracy and realize high-quality and stable production of the production line.

[0063] The present invention also provides a computer-readable storage medium, on which a computer program is stored. It is characterized in that when the computer program is executed by a processor, the steps in the above method for establishing an axial force database of a hot rolling finishing mill are implemented. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present invention are the same as those of the above method for establishing an axial force database of a hot rolling finishing mill, and will not be elaborated here.

[0064] In this article, specific examples are used to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A method for establishing an axial force database of a hot rolling finishing mill, characterized in that: include: Real-time monitoring of the axial force generated by the finishing mill of the current hot rolling production line; Establish an axial force database according to the magnitude of the axial force; The axial force data in the axial force database is displayed in the axial force data analysis platform, so that professional technicians can query the axial force status of the finishing mill at any time.

2. A method for establishing an axial force database of a hot rolling finishing mill according to claim 1, characterized in that: An axial force database is established according to the magnitude of the axial force, including: Determine whether the current TMEIC rolling mill system programming logic has the function of detecting and counting the axial force of the rolling mill; Add a data field for axial force acquisition in the rolling mill system program to collect actual axial force detection data; The information of the rolling mill working roll and support roll bearing seats and their corresponding actual axial force detection data are incorporated into the axial force database.

3. A method for establishing an axial force database of a hot rolling finishing mill as claimed in claim 2, characterized in that: The axial force data in the axial force database is displayed in the axial force data analysis platform, so that professional technicians can query the axial force status of the finishing mill at any time, including: The axial force data in the database are integrated and displayed on the hot rolling axial force information analysis platform screen; During the overhaul of the finishing mill, test whether the axial force data collection field and data storage are normal; When the axial force data collection fields and data storage are normal, the hot rolling axial force information analysis platform is put into use to facilitate real-time display, query at any time, timely analysis and status monitoring of axial force data.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps in the method for establishing an axial force database of a hot rolling finishing mill as described in any one of claims 1 to 3 are implemented.

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