Compensation parameter control system and method in H-shaped steel rolling process

Abstract

The invention discloses an H-shaped steel rolling process compensation parameter control system and method.The system comprises a rolling system and further comprises a compensation system, the compensation system is connected with the rolling system, and the compensation system is used for transmitting compensation parameters manually set by a user to the rolling system; and the rolling system reads internally configured control parameters and superposes the compensation parameters and the control parameters to obtain final control parameters, and the rolling system controls the rolling process based on the final control parameters. According to the scheme, each-pass compensation control of equipment participated in the H-shaped steel rolling process is achieved and is relatively independent of rolling system data, and the product quality level is improved.

Description

Technical Field

[0001] This invention relates to the fields of H-beam production process control and electrical control, and particularly to a compensation parameter control system and method for H-beam rolling process, so as to realize positioning and compensation control of rolling equipment for each pass and throughout the entire process. Background Technology

[0002] The equipment involved in the hot-rolled H-beam rolling process includes: a roughing mill (BD), a universal mill (TM), a BD pusher, a universal oscillating roller conveyor mechanism, and a universal side guide plate mechanism. Currently, the mainstream hot-rolled H-beam rolling technology is basically reciprocating rolling, with BD being a reciprocating rolling mill and TM being a reciprocating XH rolling mill. In each pass of the rolling process, the above-mentioned equipment participates in positioning control to ensure the size and quality of the product.

[0003] When product dimensions and quality are abnormal and adjustments to relevant equipment parameters are required, traditional adjustment methods can only modify the position parameters already configured in the rolling system, or modify the rolling chart in the rolling system to adjust the roll gap of the mill. After modifying the internal parameters of the rolling system, the rolling system reads and controls based on the internal parameters to achieve rolling control.

[0004] The existing method of compensating parameters involves a cumbersome and risky process for modifying the positioning parameters of the rolling equipment. If a manual modification is incorrect, it may cause errors in the original data within the rolling system, which are difficult to detect. At the same time, some equipment cannot achieve optimized compensation for rolling process parameters for each pass, resulting in related product quality problems that cannot be adjusted or completely eliminated, thus affecting the quality of the produced products. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a compensation parameter control system and method for the H-beam rolling process, which can realize segmented and per-pass positioning compensation for the equipment involved in the rolling process, so as to improve the control level of product quality and increase the product yield.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a compensation parameter control system for H-beam rolling process, including a rolling system, the control system further including a compensation system, the compensation system being connected to the rolling system, the compensation system being used to transmit the compensation parameters manually set by the user to the rolling system, the rolling system reading the internally configured control parameters and superimposing the compensation parameters with the control parameters to obtain the final control parameters, the rolling system controlling the rolling process based on the final control parameters.

[0007] The compensation system is connected to the human-computer interaction module, and the user can input or modify the compensation parameter values ​​to the compensation system through the human-computer interaction interface.

[0008] The compensation system has a reset function. The compensation system is connected to a reset button. After the reset button is triggered, the compensation system will reset the recorded compensation parameters to zero.

[0009] The compensation system limits the range of compensation parameter values ​​input by the human-computer interaction module. When the input compensation parameter exceeds the set range, the compensation system prohibits the input of compensation parameters exceeding the limit and provides feedback reminder information through the human-computer interaction module.

[0010] A control method for a compensation parameter control system in a steel rolling process, the method comprising:

[0011] Compensation parameters are pre-input into the compensation system; during the rolling process, the compensation system sends the compensation parameters into the rolling system, and the rolling system superimposes the internally configured control parameters and the received compensation parameters to form the final control parameters. The rolling system controls the rolling process based on the final control parameters.

[0012] The compensation system pre-sets the compensation parameters for each pass of the rolling process equipment. During the rolling process, the compensation system reads the number of passes of the rolling process equipment from the rolling system and feeds back the compensation parameters for the corresponding number of passes of the rolling process equipment to the rolling system. The rolling system performs positioning control on the corresponding rolling process equipment based on the compensation parameters and the internally configured control parameters.

[0013] The compensation parameters in the compensation system are configured to be modifiable or deletable. Operators input compensation parameter data into the compensation system through the human-machine interaction module.

[0014] The compensation system is equipped with a reset function. Operators can trigger the reset function to delete and clear the compensation parameter data that has been recorded internally.

[0015] The compensation system is configured with the limit range of compensation parameters for each pass of the rolling process equipment. When the compensation parameters entered by the operator exceed the limit range, the compensation system prohibits the input of compensation parameters and issues a reminder message.

[0016] The rolling system generates a final positioning control signal by superimposing compensation parameters and internally configured control parameters, and outputs the corresponding control signal to the frequency converter and / or servo valve of the rolling process equipment for rolling positioning control; the rolling system achieves closed-loop monitoring by acquiring the actual positioning information of the encoder.

[0017] The advantages of this invention are: it enables per-pass compensation control of equipment involved in the H-beam rolling process, and is relatively independent of the rolling system data, thus improving product quality; it allows for segmented, per-pass positioning compensation of equipment involved in rolling, thereby improving product quality control and yield. A per-pass positioning compensation system for equipment parameters is established for the BD rolling process and the TM rolling process, enabling rapid modification of positioning compensation for equipment involved in the rolling process; for the BD pusher and universal side guide plate mechanism, a per-pass positioning compensation system is designed to address the alignment of the pusher and universal side guide plate at the front and rear of the machine, the pusher and universal side guide plate at the front and rear of the machine, and the pusher and side guide plate at the front and rear of the machine, respectively, achieving accurate control of workpiece bite and strip shape during rolling; based on the rolling process, limit values ​​are set for the parameter input values ​​within the compensation system to prevent human error from causing potential equipment damage or quality problems in the rolled products. The compensation system parameters are relatively independent of the rolling system. Manual modification is only required for the compensation system parameters, and they can be reset with a single click after use. This avoids modifying the original data within the rolling system and ensures the long-term accuracy of the rolling system parameters. Attached Figure Description

[0018] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0019] Figure 1 This is a schematic diagram of the structural principle of the compensation parameter control system of the present invention;

[0020] Figure 2 This is a flowchart of the compensation parameter control of the present invention. Detailed Implementation

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0022] Existing rolling systems have pre-configured control parameters. During rolling, the system reads these parameters to control the equipment's positioning. When product dimensions or quality become abnormal and adjustments to equipment parameters are needed, existing technology directly modifies these internal control parameters to match the product quality requirements. However, this direct modification is prone to errors. Manual errors can lead to inconsistencies in the original data, which are difficult to detect and can cause system malfunctions. This solution addresses this by providing a novel rolling process parameter adjustment and control scheme. Without altering the internal parameters, a new compensation system is designed to input compensation parameters. These parameters are then overlaid with the rolling system's control parameters to modify the equipment's positioning parameters. This allows for compensation control of each pass in the H-beam rolling process, independent of the rolling system's data, thus improving product quality. This H-beam rolling process compensation parameter control technology has significant practical application value.

[0023] like Figure 1 As shown, this solution provides a compensation parameter control system for the H-beam rolling process, including a rolling system. The rolling system has pre-configured positioning parameters for each pass of each rolling process equipment. An additional compensation system is included, which is communicatively connected to the rolling system. The compensation system transmits user-defined compensation parameters to the rolling system. The rolling system reads the internally configured control parameters and superimposes the compensation parameters with the control parameters to obtain the final control parameters. The rolling system controls the rolling process based on these final control parameters. The compensation system is an additional software and / or hardware-developed system with data input, storage, display, and interactive functions, capable of interacting with the rolling system. Simultaneously, a functional module is added to the rolling system to superimpose the rolling system's control parameters and compensation parameters to form new positioning parameters, which are then converted into control parameters and sent to the corresponding rolling process equipment. This functional module can be integrated into the rolling system via software, enabling the reading of the rolling system's configured control parameters and the calculation of their superposition with the compensation parameters.

[0024] The compensation system connects to a human-computer interaction (HCI) module, allowing users to input or modify compensation parameter values ​​through the HCI interface. Since the compensation parameters in the system can be manually entered and modified, an HCI module is needed for data input and modification. The HCI module can be implemented using various methods such as a touchscreen and touch buttons.

[0025] The compensation system features a reset function. Connected to a reset button, the system clears all recorded compensation parameters upon triggering. The reset function is implemented within the compensation system; when triggered, it deletes all internally stored compensation parameters. Normally, the user inputs compensation parameters for each process device via the human-machine interface module, which is then recorded, stored, and displayed in real-time. When the reset function is triggered, the system deletes all recorded parameters, achieving the zeroing effect. The reset function is triggered by a reset button, which can be a physical button or a soft-switch button implemented within the human-machine interface module.

[0026] Furthermore, the compensation system is pre-developed with a limit function, restricting the range of compensation parameter values ​​input to the human-machine interface module. When the input compensation parameter exceeds the set range, the compensation system prohibits the input of compensation parameters exceeding the limit and provides a reminder through the human-machine interface module. The compensation system pre-sets the compensation parameter limit range for each pass of each rolling process. When the user inputs or modifies the compensation parameter, the system compares the input or modified compensation parameter value with the limit range. If the input compensation parameter value is within the limit range, the compensation system records and stores the input compensation parameter and replaces the original compensation parameter; otherwise, the compensation system prohibits the storage and recording of data exceeding the limit range, does not modify the compensation parameter, and simultaneously issues an over-limit reminder through the human-machine interface.

[0027] Based on the above-mentioned control method for a compensation parameter control system in a steel rolling process, the method includes:

[0028] Compensation parameters are pre-input into the compensation system; during the rolling process, the compensation system sends the compensation parameters into the rolling system, and the rolling system superimposes the internally configured control parameters and the received compensation parameters to form the final control parameters. The rolling system controls the rolling process based on the final control parameters.

[0029] The compensation system pre-sets the compensation parameters for each pass of the rolling process equipment. During the rolling process, the compensation system reads the number of passes of the rolling process equipment from the rolling system and feeds back the compensation parameters for the corresponding number of passes of the rolling process equipment to the rolling system. The rolling system performs positioning control on the corresponding rolling process equipment based on the compensation parameters and the internally configured control parameters.

[0030] The compensation parameters in the compensation system are configured to be modifiable or deletable. Operators input compensation parameter data into the system through a human-machine interface module. The compensation system has an internal reset function, which operators trigger to clear and delete all recorded compensation parameter data. The reset function is implemented within the compensation system; upon triggering, it clears and deletes all stored compensation parameters. Normally, the compensation parameters for each process device input by the user through the human-machine interface module are recorded, stored, and displayed in real-time. When the compensation system receives a reset notification, it deletes all recorded compensation parameters to achieve the clearing effect. The reset function is triggered by a reset button, which can be a physical button or a soft-switch button implemented within the human-machine interface module.

[0031] The compensation system is configured with limit ranges for compensation parameters for each pass of the rolling process equipment. When the compensation parameters input by the operator exceed the limit range, the compensation system prohibits the input of compensation parameters and issues a warning message. The compensation system pre-sets the limit ranges for compensation parameters for each pass of each rolling process equipment. When a user inputs or modifies compensation parameters, the system compares the input or modified compensation parameter value with the limit range. If the input compensation parameter value is within the limit range, the compensation system records and stores the input compensation parameter and replaces the original compensation parameter; otherwise, the compensation system prohibits the storage and recording of data exceeding the limit range, does not modify the compensation parameter, and simultaneously issues a limit-exceeding warning through the human-machine interface.

[0032] The rolling system generates a final positioning control signal by superimposing compensation parameters and internally configured control parameters, and outputs the corresponding control signal to the frequency converter and / or servo valve of the rolling process equipment for rolling positioning control; the rolling system achieves closed-loop monitoring by acquiring the actual positioning information of the encoder.

[0033] The compensation parameter control includes the following methods: roll gap compensation control for the roughing mill (BD), compensation positioning for each pass of the BD pusher, compensation positioning for each pass of the universal side guide plate, compensation positioning for each pass of the universal rolling mill equipment, and compensation positioning for each pass of the universal oscillating roller conveyor mechanism. Specifically, this includes:

[0034] Roll gap compensation control method for roughing mill (BD): The roll gap parameters of a certain pass of the compensation system are manually modified. The compensation system transmits the data to the rolling system. The rolling system adds the original parameter A and the compensation parameter ±B to obtain the set roll gap value C. The rolling system will then position the equipment on site according to the calculated roll gap value.

[0035] BD pusher compensation positioning for each pass: The roll gap parameters of a certain pass of the compensation system are manually modified. The compensation system transmits the data to the rolling system. The rolling system adds the original parameter A and the compensation parameter ±B to obtain the set roll gap value C. The rolling system will position the equipment on site according to the calculated roll gap value.

[0036] The universal side guide plate is designed for compensation and positioning per pass. Its design principle is basically the same as that of the BD pusher machine.

[0037] Universal rolling mill equipment positioning compensation design for each pass: Universal rolling mill equipment includes a universal roughing mill (UR), an edge mill (E), and a finishing mill (UF). Positioning items for universal rolling mill equipment include roll gap, axial direction, and horizontal inclination. The roll gap compensation design method for each pass is as follows: The compensation system, based on the process and rolling system, designs horizontal roll gap compensation (HR Gap), drive-side vertical roll gap compensation (VR Gap DS), and operator-side vertical roll gap compensation (VR Gap OS). When a parameter is manually modified for a certain pass (±a (mm), the compensation system transmits the data to the rolling system, and the TCS system reads the roll gap value from the rolling system: Roll gap value = original roll gap ±a (mm), where a is an empirical parameter, typically manually input as -10mm ≤ a ≤ 10mm. The hydraulic cylinder for rolling roll gap positioning issues positioning parameters for positioning. The design methods for axial direction and horizontal inclination compensation are basically the same as for roll gap compensation, only the driving positioning equipment and positioning method differ slightly.

[0038] The universal oscillating roller conveyor mechanism provides positioning compensation for each pass: The compensation system is designed with a front oscillating roller conveyor (FR LT) and a rear oscillating roller conveyor (RE LT). The internal parameter ±b (mm) of the compensation system is manually modified. The b value is an empirical parameter, typically -30mm≤a≤30mm. The data is transmitted to the rolling system, which performs positioning based on the positioning parameter: the original data ±b (mm).

[0039] When performing compensation control during the rolling process, the following methods are also included:

[0040] (1) Information reading of the compensation system: The compensation system obtains the rolling pass number information of the product produced by the rolling system this time, and establishes the pass number of this system. The pass numbers of the two are the same. After the product is produced, the roll gap compensation parameter of the compensation system can be cleared to zero directly by using the reset function in the compensation system without affecting the original data in the rolling system.

[0041] (2) Roll gap design of roughing mill (BD) for each pass: The roll gap parameters of a certain pass of the compensation system are manually modified. The compensation system transmits the data to the rolling system. The rolling system adds the original parameter A and the compensation parameter ±B to obtain the set roll gap value C. The rolling system will position the equipment on site according to the calculated roll gap value.

[0042] (3) BD Pusher Positioning Compensation Design for Each Pass: Generally, pusher positioning is based on the given pass centerline and workpiece width H within the rolling system. Using the centerline as the zero point, the pusher travels on both sides with strokes of +H / 2 (mm) and -H / 2 (mm), respectively. This method cannot achieve arbitrary positioning on one side. The designed compensation system, based on the logic of the rolling system, adds a position parameter ±h (mm) to the pusher positioning device. The h value is an empirical parameter, typically input manually as -30mm ≤ h ≤ 30mm. The actual pusher positioning command is ±H / 2 ±h (mm). The above positioning control method is used for pusher positioning both before and after the mill, allowing for arbitrary positioning according to manual requirements during each rolling pass.

[0043] (4) Universal side guide plate compensation positioning per pass: Its design principle is basically the same as that of the BD pusher press compensation positioning design per pass. Generally, the universal side guide plate positioning is based on the center line of the rolling mill and the width H of the rolled piece given by the rolling system. With the center line as the zero point, the travel distance of the side guide plates on both sides is +H / 2 (mm) and -H / 2 (mm). The command for the side guide plates to be positioned on both sides simultaneously cannot achieve arbitrary positioning on one side. The designed compensation system adds a position parameter ±h (mm) to the side guide plate positioning device based on the logic of the rolling system. The h value is an empirical parameter, and the manual input is generally -50mm≤h≤50mm. The actual pusher press positioning obtains the position command as: ±H / 2±h (mm). The positioning of the side guide plates before and after the mill adopts the above positioning control method, and can be arbitrarily positioned according to manual needs in each rolling pass.

[0044] (5) Universal Rolling Mill Equipment Positioning Compensation Design for Each Pass: The universal rolling mill equipment includes a universal roughing mill (UR), an edge mill (E), and a finishing mill (UF). The positioning items for the universal rolling mill equipment include roll gap, axial direction, and horizontal inclination. The roll gap compensation design method for each pass is as follows: the compensation system designs horizontal roll gap compensation (HR Gap), drive-side vertical roll gap compensation (VR Gap DS), and operating-side vertical roll gap compensation (VR Gap OS) based on the process and rolling system. When a parameter of a certain pass is modified manually by ±a (mm), the compensation system transmits the data to the rolling system, and the TCS system reads the roll gap value of the rolling system: Roll gap value = original roll gap ±a (mm), where a is an empirical parameter, and the manual input is generally -10mm ≤ a ≤ 10mm. The positioning parameters are issued to the hydraulic cylinder for positioning the rolling roll gap for positioning. The design methods for axial direction and horizontal inclination compensation are basically the same as those for roll gap compensation, except that there are some differences in the driving positioning equipment and positioning method.

[0045] (6) Universal oscillating roller conveyor positioning compensation design for each pass: The compensation system is designed with a front oscillating roller conveyor (FRLT) and a rear oscillating roller conveyor (RELT). The parameters ±b (mm) in the compensation system are manually modified. The b value is an empirical parameter, and the manual input is generally -30mm≤a≤30mm. The data is transmitted to the rolling system, and the rolling system performs positioning according to the positioning parameters: original data ±b (mm).

[0046] (7) Set input value limits for the parameters of the compensation system (2-6). For example, the input value limit for roll gap compensation is (±10). If the input value exceeds the limit due to human error, it will be impossible to input or read the data. Similarly, the input value limit for BD pusher compensation is (±30). If the input value exceeds the limit due to human error, it will be impossible to input or read the data. The compensation system can effectively avoid production risks such as equipment damage and product defects caused by incorrect process parameters due to human error.

[0047] The main innovations of this invention are: (1) Establishing a positioning compensation system for the equipment parameters of the BD rolling process and the TM rolling process for each pass, so as to enable rapid modification of the positioning compensation of the equipment involved in the rolling process; (2) For the BD pusher and universal side guide plate mechanism, designing a positioning compensation system for the alignment of the process parameters of the pusher and universal side guide plate before the machine, the pusher and universal side guide plate after the machine, the pusher and side guide plate on one side of the pusher and side guide plate before and after the machine, and the pusher and side guide plate before and after the machine, so as to achieve accurate control of the biting of the rolled piece and the strip state during rolling; (3) Setting a limit value for the parameter input value in the compensation system according to the rolling process, so as to prevent personnel from inputting incorrectly, which may cause equipment damage or quality problems of rolled products; (4) The parameters of the compensation system are relatively independent of the rolling system. The manual only modifies the parameters of the compensation system. After use, the system is cleared with one click, avoiding modification of the original data in the rolling system and ensuring the long-term accuracy of the parameters of the rolling system.

[0048] This solution offers the following technical advantages upon implementation:

[0049] (1) This technology can easily and conveniently adjust the positioning of the equipment that needs to be adjusted according to the production situation, without affecting the original data in the rolling system, and ensuring the long-term accuracy of the original data.

[0050] (2) This technology enables segmented positioning of each pass of the rolling equipment, providing ample room for manual adjustment and allowing for accurate and targeted optimization and improvement based on actual production conditions.

[0051] Applying the above solution to the actual production process, taking the production of 400x400x13x21 gauge, with 11 passes of BD rolling and 9 passes of universal rolling as an example:

[0052] (1) The compensation system reads the process data in the system: rolling pass, workpiece width, workpiece height, and workpiece relative to the pass position.

[0053] (2) The compensation system establishes the number of passes and reads the relevant compensation parameter information column for each pass.

[0054] (3) During production, it was found that when the rolled piece entered the BD pass, there was a biting deviation on the first drive side. The manual input of the push bed value of the first drive side of the compensation system was -15mm. The compensation system transmitted the parameter to the rolling system. The rolling system calculated the result and sent the signal to the frequency converter. The frequency converter drove the motor to work, and the push bed moved 15mm closer to the rolling center line.

[0055] (4) During production, it was found that the web size of the rolled product was too thin. The compensation system was manually entered with a roll gap compensation of +0.2mm for the 9th pass UF mill horizontal roll. The compensation system transmitted the parameters to the rolling system, which then transmitted the parameters to the TCS system and calculated the results. The calculation results were then transmitted to the servo valve to drive the cylinder positioning, and the 9th pass UF mill horizontal roll was opened by 0.2mm on the original basis.

[0056] After inputting compensation data into the aforementioned compensation system, the finished products were inspected, and it was found that the problems of biting on the first transmission side and thin web size of the product were resolved. This shows that using this solution to control the compensation parameters of the production process can effectively control the rolling process and improve the quality of the products.

[0057] Obviously, the specific implementation of this invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A compensation parameter control system for H-beam rolling process, comprising a rolling system, characterized in that: The control system also includes a compensation system, which is connected to the rolling system. The compensation system is used to transmit the compensation parameters manually set by the user to the rolling system. The rolling system reads the internally configured control parameters and superimposes the compensation parameters with the control parameters to obtain the final control parameters. The rolling system controls the rolling process based on the final control parameters.

2. The H-beam rolling process compensation parameter control system according to claim 1, characterized in that: The compensation system is connected to the human-computer interaction module, and the user inputs or modifies the compensation parameter value to the compensation system through the human-computer interaction interface.

3. The H-beam rolling process compensation parameter control system according to claim 2, characterized in that: The compensation system has a reset function. The compensation system is connected to a reset button. After the reset button is triggered, the compensation system resets the recorded compensation parameters.

4. A compensation parameter control system for H-beam rolling process according to any one of claims 1 to 3, characterized in that: The compensation system limits the range of the compensation parameter value input by the human-computer interaction module. When the input compensation parameter exceeds the set range value, the compensation system prohibits the compensation parameter exceeding the limit from being input into the compensation system and feeds back reminder information through the human-computer interaction module.

5. A control method for a compensation parameter control system for an H-beam rolling process according to any one of claims 1 to 4, characterized in that: The method comprises: The compensation parameters are input into the compensation system in advance; during the rolling process, the compensation system sends the compensation parameters to the rolling system, and the rolling system superimposes the read internal configured control parameters and the received compensation parameters to form the final control parameters, and the rolling system controls the rolling process based on the final control parameters.

6. The steel rolling process compensation parameter control method according to claim 5, characterized in that: The compensation parameters of each pass of the rolling process equipment are pre-set through the compensation system; during the rolling process, the compensation system reads the pass number of the rolling process equipment through the rolling system and feeds back the compensation parameters of the corresponding pass number of the rolling process equipment to the rolling system, and the rolling system performs positioning control on the corresponding rolling process equipment based on the compensation parameters and the internally configured control parameters.

7. The steel rolling process compensation parameter control method according to claim 5, characterized in that: The compensation parameters in the compensation system are configured to be modifiable or deletable, and the operator enters the compensation parameter data into the compensation system through the human-computer interaction module.

8. The steel rolling process compensation parameter control method according to claim 7, characterized in that: The compensation system is internally configured with a reset function. The operator triggers the reset function to trigger the compensation system to delete and clear the compensation parameter data that has been recorded internally.

9. The steel rolling process compensation parameter control method according to claim 5, characterized in that: The compensation system is configured with the limit range of compensation parameters for each pass of the rolling process equipment. When the compensation parameters input by the operator exceed the limit range, the compensation system prohibits the input of the compensation parameters and issues a reminder message.

10. The steel rolling process compensation parameter control method according to claim 5, characterized in that: The rolling system forms the final positioning control signal based on the superposition of compensation parameters and internally configured control parameters and outputs the corresponding control signal to the frequency converter and / or servo valve of the rolling process equipment to perform rolling positioning control; the rolling system achieves closed-loop monitoring by obtaining the actual positioning information of the encoder.

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