A method for adaptive selection of online width adjustment mode

Abstract

This application provides a method for adaptively selecting an online width adjustment mode, relating to the field of steel plant technology, including the following steps: S1, acquiring the actual width and target width based on an online width adjustment control program; S2, determining which width adjustment mode the total length of the width adjustment / narrowing conforms to; S3, automatically selecting the width adjustment mode and choosing an appropriate width adjustment speed and action mode for online width adjustment / narrowing. This method for adaptively selecting an online width adjustment mode automatically determines and selects the most suitable width adjustment mode and parameters for the current width adjustment requirements by real-time acquisition and analysis of actual width and target width data, and precisely controls the width adjustment speed and action mode. Compared with existing commonly used fixed modes, this adaptive selection mechanism can more accurately match different width adjustment requirements, avoiding width adjustment failures or abnormal terminations caused by mode mismatch.

Description

Technical Field

[0001] This application relates to the field of steel plant technology, and in particular to a method for adaptively selecting online width adjustment modes. Background Technology

[0002] In the steel production sector, continuous casting machines, as key equipment for continuously casting molten steel into billets of specific shapes and sizes, directly impact the efficiency and profitability of the entire steel production process through their operational stability and billet quality. With the market's increasing demand for diversified and high-quality steel products, continuous casting machines need more flexible production capabilities to quickly adapt to the production requirements of billets of different specifications. Among these capabilities, online width adjustment has become one of the important features of continuous casting machines to meet diverse production needs. Online width adjustment allows for the adjustment of billet width without interrupting the continuous casting process, thereby enabling the production of billets of different widths on the same continuous casting machine, significantly improving production flexibility and efficiency.

[0003] However, after the introduction of the online taper adjustment function, the No. 3 continuous casting machine at the 210 converter plant experienced multiple instances of online taper adjustment failing to operate normally or ending abnormally. This situation led to many serious consequences, such as the target taper failing to meet design requirements, resulting in non-standard billet dimensions and delayed product delivery to customers, impacting the company's reputation and market competitiveness. Even more seriously, during the taper reversal operation, the abnormal online taper adjustment directly interrupted the production process, causing significant economic losses to the company.

[0004] After extensive and in-depth analysis of the program, technicians discovered significant differences in the methods and rates of width adjustment under different modes. While the commonly used S-mode performs well in adjusting certain specific widths, it is not suitable for all width adjustments. When the width adjustment requirements in actual production exceed the applicability of the S-mode, width adjustment failures or abnormal terminations are likely to occur. This severely impacts the stability and efficiency of continuous casting production, not only increasing equipment downtime and reducing equipment utilization but also disrupting production plans and affecting the smooth operation of the entire production process. Summary of the Invention

[0005] This application is made in view of the above-mentioned problems, and its purpose is to provide a method for adaptively selecting online width adjustment modes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for adaptively selecting an online width adjustment mode, comprising the following steps:

[0007] S1. Based on the online width adjustment control program, the actual width and target width are collected to provide basic data for the selection of subsequent width adjustment modes;

[0008] S2. Determine which width adjustment mode the total length of the width adjustment / narrowing conforms to;

[0009] S3. Automatically select the width adjustment mode and choose the appropriate width adjustment speed and action mode to perform online width / narrowing adjustment.

[0010] Furthermore, the specific operation of step S1 is as follows: the actual width of the slab at the outlet of the continuous casting machine is collected in real time through the sensors and data interfaces in the online width adjustment control program, and the target width to be adjusted is obtained from the production plan or operation interface.

[0011] Furthermore, the sensor is connected to the data interface of the online width adjustment control program via a data cable (such as RS485, Ethernet, etc.) or wirelessly (such as Wi-Fi, ZigBee, etc.). The data interface is responsible for receiving the actual width data transmitted from the sensor, performing preliminary data verification and filtering to eliminate abnormal data, and transmitting the verified actual width data to the control program for processing.

[0012] Furthermore, the specific operation of step S2 is as follows: based on the difference between the actual width and the target width, determine the total length to be adjusted for width or narrowing, and determine which preset width adjustment mode is appropriate.

[0013] Furthermore, step S2 includes the following sub-steps:

[0014] S21. The program presets multiple width adjustment modes, each corresponding to a different width adjustment length range and width adjustment strategy;

[0015] S22. Calculate the difference between the actual width and the target width, and determine the total length that needs to be adjusted in width or narrowness.

[0016] S23. Search for a matching mode in the preset width adjustment mode list in the program, and record the corresponding width adjustment speed, action mode and other parameters for later use.

[0017] Furthermore, in step S21, the width adjustment effect under different width adjustment modes is verified through experiments, including width adjustment accuracy, stability, and impact on billet quality, etc., and the parameters are optimized based on the experimental results to determine the specific parameters that achieve the best width adjustment effect under each mode.

[0018] Furthermore, the preset operation of the width adjustment mode is as follows: an enumeration type (enum) or structure (struct) is defined in the program to represent different width adjustment modes, and a mode configuration table is created, that is, a data structure (such as an array or dictionary) is established to store the detailed parameters of each mode, including the width adjustment length range, width adjustment speed, action mode, etc., where the action mode is the specific operation method in the width adjustment process, including continuous adjustment, step adjustment (pausing after adjusting a certain width in each step to check and adjust parameters), etc.

[0019] Furthermore, in step S22, the formula for calculating the difference is: Difference = Actual width - Target width; the calculation result of this formula and its corresponding processing logic are as follows:

[0020] 1) If the difference is 0, the width adjustment is considered complete, and no operation is performed;

[0021] 2) If the difference is not equal to 0, then perform a width adjustment operation, and adjust the length to [value missing]. For differences > 0, perform a narrowing operation; for differences < 0, perform a widening operation.

[0022] Furthermore, step S3 includes the following sub-steps:

[0023] S31. Automatic selection logic for width adjustment mode: Based on the width adjustment mode determined in the previous step (step S2), the automatic selection logic for the width adjustment mode is implemented in the program.

[0024] S32. Width Adjustment Command Generation and Execution: Based on the selected width adjustment mode, call the corresponding width adjustment speed and action mode control command, and send the control command to the width adjustment mechanism control system of the continuous casting machine so that it performs width adjustment / narrowing operation according to the preset parameters.

[0025] S33. Real-time monitoring and adjustment: During the width adjustment process, the sensor continuously monitors the actual width of the slab and feeds the data back to the control program in real time. The control program continuously adjusts the width adjustment command based on the feedback data to ensure that the continuous casting machine can accurately reach the target width according to the preset parameters.

[0026] S34. Width Adjustment Completion Judgment and Subsequent Processing: When the actual width reaches the target width, the width adjustment is judged to be complete, and relevant data during the width adjustment process is recorded, such as width adjustment time, width adjustment amount, and width adjustment success rate.

[0027] Furthermore, in the process of width adjustment, if any abnormal situation occurs, the width adjustment process will be stopped immediately through the control system, the relevant power, hydraulic or pneumatic sources will be cut off, the equipment energy will be isolated, and corresponding emergency measures will be taken.

[0028] Furthermore, the abnormal situations include equipment mechanical failures, electrical / control system failures, hydraulic / pneumatic system failures, data anomalies, safety risks, etc., and the abnormal situations are categorized and corresponding measures are as follows:

[0029] 1) Equipment mechanical failure

[0030] Symptoms include: mechanical jamming, broken transmission components, overheated bearings, and abnormal noises.

[0031] Measures: Inspect the fault point and record the abnormal location (such as rolls, motors, couplings, etc.); notify the maintenance team to disassemble and repair, and replace the damaged parts; if necessary, use backup equipment or adjust the production plan to avoid production line downtime;

[0032] 2) Electrical / control system failure

[0033] Symptoms include: PLC alarms, sensor malfunctions, and servo motor malfunctions.

[0034] Measures: Restart the control system, check the PLC program and I / O signals, and calibrate or replace the faulty sensor / actuator; switch to manual mode;

[0035] 3) Hydraulic / pneumatic system failure

[0036] Symptoms include: sudden pressure drop, oil pipe leakage, valve blockage, etc.

[0037] Measures: Shut down the hydraulic pump, locate and repair leaks; clean or replace clogged filters / valves; replenish hydraulic oil or gas;

[0038] 4) Abnormal data (process parameters exceeding limits)

[0039] Symptoms: Width deviation exceeds limits, temperature / pressure data is abnormal, etc.

[0040] Measures: Suspend production and verify the set and actual values ​​of process parameters; check whether measuring instruments (such as laser width gauges and thermocouples) are calibrated; manually verify product dimensions, adjust parameters, and then conduct small-batch trial production for verification.

[0041] 5) Safety risks (such as material splashes, equipment collisions)

[0042] Phenomena include: material misalignment, triggering of protective devices, etc.

[0043] Measures: After evacuating personnel to a safe area, check whether the safety light curtains and emergency stop devices are effective; after repairing the protective facilities, a safety test must be conducted before restarting.

[0044] Compared with existing technologies, this invention has the following advantages: By collecting and analyzing actual width and target width data in real time, it automatically determines and selects the most suitable width adjustment mode and parameters for the current width adjustment needs, precisely controlling the width adjustment speed and action mode. Compared with commonly used fixed modes, this adaptive selection mechanism can more accurately match different width adjustment needs, avoiding width adjustment failures or abnormal terminations caused by mode mismatches. This program significantly improves the accuracy and stability of width adjustment operations, ensuring that the continuous casting machine can accurately reach the target width according to preset parameters, thereby improving billet quality and production efficiency. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0046] Figure 1 This is a flowchart illustrating the steps of a method for adaptively selecting an online width adjustment mode according to the present invention.

[0047] Figure 2 This is a flowchart illustrating step S22 of a method for adaptively selecting an online width adjustment mode according to the present invention.

[0048] Figure 3 This is the core of the method for adaptively selecting online width adjustment mode in this invention. Figure 1 ;

[0049] Figure 4 This is the core of the method for adaptively selecting online width adjustment mode in this invention. Figure 2 ;

[0050] Figure 5 This is the core of the method for adaptively selecting online width adjustment mode in this invention. Figure 3 .

[0051] The purpose, features, and advantages of this accompanying drawing will be further explained in conjunction with the embodiments and with reference to the accompanying drawing. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of this application clearer, the following description and illustration are provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0053] Obviously, the following description is merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios without any inventive effort. Furthermore, it is understood that although the effort involved in such development may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0054] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0055] Unless otherwise specified, the term "or" is inclusive in this application. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, the condition "A or B" is satisfied by any of the following conditions: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0056] Example 1

[0057] Step S1: Collect the actual width and the target width.

[0058] Actual width acquisition: The actual width of the slab at the continuous casting machine exit is acquired in real time using a laser sensor within the online width adjustment control program. The laser sensor is installed above the exit roller conveyor of the continuous casting machine. It calculates the actual width of the slab by emitting a laser beam and measuring the time it takes for the reflected light to pass. The sensor is connected to the data interface of the online width adjustment control program via a data cable. The data interface receives the actual width data from the sensor and transmits it to the control program for processing.

[0059] Target width acquisition: Obtain the target width to be adjusted from the production planning system. For example, the current production plan requires adjusting the slab width from 1200mm to 1000mm.

[0060] Step S2: Determine which width adjustment mode the total length of the width adjustment / narrowing conforms to.

[0061] Preset width adjustment modes: The program has three preset width adjustment modes: fast mode (width adjustment range 0-200mm, width adjustment speed 5mm / s, action mode is continuous adjustment), medium speed mode (width adjustment range 200-400mm, width adjustment speed 3mm / s, action mode is step adjustment, with a 2-second pause after each 50mm adjustment), and slow speed mode (width adjustment range over 400mm, width adjustment speed 1.5mm / s, action mode is step adjustment, with a 3-second pause after each 30mm adjustment).

[0062] Calculate the difference: The actual width is 1200mm, the target width is 1000mm, and the difference is 200mm.

[0063] Select the width adjustment mode: Based on the difference of 200mm, search for a matching mode in the preset width adjustment mode list. Since 200mm falls within the width adjustment length range of the medium speed mode, select the medium speed mode for width adjustment.

[0064] Step S3: Automatically select the width adjustment mode and choose the appropriate width adjustment speed and action mode to perform online width adjustment / narrowing.

[0065] Perform width adjustment operation: Based on the medium speed mode selected in the previous step, the control program calls the corresponding width adjustment speed (3mm / s) and action mode (step adjustment, pausing for 2 seconds after each 50mm adjustment) control command, and performs online narrowing operation by controlling the width adjustment mechanism of the continuous casting machine.

[0066] Real-time monitoring and adjustment: During the narrowing process, the laser sensor continuously monitors the actual width of the slab and feeds the data back to the control program in real time. When the actual width is adjusted to 1000mm, the control program stops sending widening commands, and the narrowing operation is complete.

[0067] in conclusion:

[0068] The total narrowing time in this case was 68 seconds (including the pause time). The actual width of the slab after narrowing was 1000.2mm, which was within the allowable range. Furthermore, there were no abnormal terminations during the narrowing process, the target taper met the design requirements, and the product was delivered to the customer on time.

[0069] Example 2

[0070] Step S1: Collect the actual width and the target width.

[0071] Actual width acquisition: The actual width of the slab at the continuous casting machine exit is also acquired in real time using a laser sensor. The current actual width of the slab is 1500mm.

[0072] Target width acquisition: The target width to be adjusted is 1300mm, obtained from the production planning system.

[0073] Step S2: Determine which width adjustment mode the total length of the width adjustment / narrowing conforms to.

[0074] Preset width adjustment mode: Similar to Example 1, three width adjustment modes are preset: fast mode, medium speed mode and slow speed mode.

[0075] Calculate the difference: The actual width is 1500mm, the target width is 1300mm, and the difference is 200mm; however, this adjustment is to narrow it to a wider range, so the mode selection logic is the same. However, if the target width is 1700mm, the difference is -200mm, indicating that it needs to be widened.

[0076] Select the width adjustment mode (taking width adjustment as an example): Assuming the target width is 1700mm and the difference is -200mm (absolute value 200mm), search for a mode that meets the conditions in the preset width adjustment mode list. Since 200mm falls within the width adjustment length range of the medium speed mode, select the medium speed mode for width adjustment.

[0077] Step S3: Automatically select the width adjustment mode and choose the appropriate width adjustment speed and action mode to perform online width adjustment / narrowing.

[0078] Perform width adjustment operation: Based on the medium speed mode selected in the previous step, the control program calls the corresponding width adjustment speed (3mm / s) and action mode (step adjustment, pausing for 2 seconds after each 50mm adjustment) control command, and performs online width adjustment operation by controlling the width adjustment mechanism of the continuous casting machine.

[0079] Real-time monitoring and adjustment: During the width adjustment process, the laser sensor continuously monitors the actual width of the slab and feeds the data back to the control program in real time. When the actual width is adjusted to 1700mm, the control program stops sending width adjustment commands, and the width adjustment operation is complete.

[0080] in conclusion:

[0081] The total width adjustment time in this case was 68 seconds (the same as the narrowing time in Example 1, due to the same adjustment length and mode). After the width adjustment, the actual width of the slab was 1699.8 mm, and the error was within the allowable range. Furthermore, no abnormal termination occurred during the width adjustment process, and the target taper met the design requirements, satisfying the customer's needs for slabs of different widths.

[0082] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A method for adaptively selecting online width adjustment modes, characterized in that, Includes the following steps: S1. Based on the online width adjustment control program, collect the actual width and the target width; S2. Determine which width adjustment mode the total length of the width adjustment or narrowing adjustment conforms to. The specific operation of step S2 is as follows: Based on the difference between the actual width and the target width, determine the total length of the width adjustment or narrowing adjustment that needs to be performed, and determine which preset width adjustment mode it conforms to. Step S2 includes the following sub-steps: S21. Preset width adjustment modes in the program: Three width adjustment modes are preset in the program, namely fast mode, medium speed mode and slow speed mode. Fast mode is for width adjustment length range of 0-200mm, width adjustment speed of 5mm / s, and action mode is continuous adjustment; medium speed mode is for width adjustment length range of 200-400mm, width adjustment speed of 3mm / s, and action mode is step adjustment, with a 2-second pause after each 50mm adjustment; slow speed mode is for width adjustment length range of more than 400mm, width adjustment speed of 1.5mm / s, and action mode is step adjustment, with a 3-second pause after each 30mm adjustment. In step S21, the width adjustment effect of different width adjustment modes is verified by experiments, and the parameters are optimized according to the experimental results to determine the specific parameters that achieve the best width adjustment effect in each mode. S22. Calculate the difference between the actual width and the target width, and determine the total length that needs to be adjusted in width or narrowness. S23. Search for a mode that meets the conditions in the preset width adjustment mode list in the program, and record the width adjustment speed and action mode corresponding to the mode; S3. Automatically select the width adjustment mode and choose the appropriate width adjustment speed and action mode to perform online width or narrowing adjustment.

2. The method for adaptively selecting online width adjustment mode according to claim 1, characterized in that, The specific operation of step S1 is as follows: the actual width of the slab at the outlet of the continuous casting machine is collected in real time through the sensors and data interfaces in the online width adjustment control program, and the target width to be adjusted is obtained from the production plan or operation interface.

3. The method for adaptively selecting online width adjustment mode according to claim 2, characterized in that, The sensor is connected to the data interface of the online width adjustment control program via a data cable or wirelessly. The data interface is responsible for receiving the actual width data from the sensor and transmitting it to the control program for processing.

4. The method for adaptively selecting online width adjustment mode according to claim 1, characterized in that, In step S22, the formula for calculating the difference is: Difference = Actual width - Target width; the calculation result of this formula and its corresponding processing logic are as follows: 1) If the difference is 0, the width adjustment is considered complete, and no operation is performed; 2) If the difference is not equal to 0, then perform a width adjustment operation, and adjust the length to [value missing]. For differences > 0, perform a narrowing operation; for differences < 0, perform a widening operation.

5. The method for adaptively selecting online width adjustment mode according to claim 1, characterized in that, Step S3 includes the following sub-steps: S31, Automatic selection logic for width adjustment mode: Based on the width adjustment mode determined in the previous step, implement the automatic selection logic for the width adjustment mode in the program; S32. Width Adjustment Command Generation and Execution: Based on the selected width adjustment mode, call the corresponding width adjustment speed and action mode control command, and send the control command to the width adjustment mechanism control system of the continuous casting machine so that it performs width adjustment / narrowing operation according to the preset parameters. S33. Real-time monitoring and adjustment: During the width adjustment process, the sensor continuously monitors the actual width of the slab and feeds the data back to the control program in real time. The control program continuously adjusts the width adjustment command based on the feedback data. S34. Width Adjustment Completion Judgment and Subsequent Processing: When the actual width reaches the target width, the width adjustment is determined to be complete, and relevant data during the width adjustment process is recorded.

6. The method for adaptively selecting online width adjustment mode according to claim 5, characterized in that, If any abnormal situation occurs during the width adjustment process, the width adjustment process will be stopped immediately through the control system, the relevant power, hydraulic or pneumatic sources will be cut off, the equipment energy will be isolated, and corresponding emergency measures will be taken.

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