Control system and method for steel rolling continuous rolling production line

Abstract

The invention belongs to the technical field of steel rolling production, and provides a control system and method of a steel rolling continuous rolling production line, and the control system of the steel rolling continuous rolling production line comprises a raw material detection module, a plurality of groups of rolling units, a finished product detection module, a central control module and an execution adjustment module, the central control module can detect billet initial parameters, real-time inlet and outlet parameters of each rolling unit and finished product parameters, generates an instruction according to a rolling model, and executes the adjustment module to adjust the rolling force, the speed and the roller gap; the control method comprises the steps of raw material detection, model calling, parameter detection and adjustment of each unit, taking deviation as a next group of pre-adjustment reference, finished product detection and model optimization. According to the method, accurate adjustment of the whole process is achieved, lag and deviation accumulation are reduced, and the rolling precision and the finished product quality stability are improved through model optimization.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel rolling production, and in particular relates to a control system and method for a steel rolling continuous rolling production line. Background Art

[0002] In the steel rolling process, continuous rolling lines are crucial for improving production efficiency and steel quality. However, numerous factors can affect rolling accuracy and stability during the actual rolling process. For example, the initial parameters of the billet (such as cross-sectional dimensions, temperature, and material) fluctuate, with significant differences between batches. During the rolling process, mill parameters (such as rolling force, rolling speed, and roll gap) can change due to equipment wear and temperature fluctuations. Furthermore, inaccurate coordination between rolling units can lead to rolling deviations from previous units accumulating in subsequent units, making it difficult to guarantee the quality of the finished steel.

[0003] Currently, most existing control systems and methods for continuous steel rolling production lines use simple parameter settings and feedback adjustments, lacking comprehensive monitoring and precise adjustment of the entire rolling process. For example, some control systems only inspect finished steel products and adjust the rolling process based on the finished product parameters. However, due to the continuous nature of the rolling process, such adjustments have a lag, making it difficult to effectively ensure product quality. In addition, existing control methods do not adequately consider the relationship between the various rolling units and are unable to pre-adjust the subsequent rolling unit based on the rolling conditions of the previous rolling unit, resulting in the continuous accumulation of rolling deviations, which affects the quality of the final product. Therefore, a control system and method for continuous steel rolling production lines are needed to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a control system and method for a continuous steel rolling production line to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a control system for a continuous steel rolling production line, comprising a raw material detection module, a plurality of rolling units, a finished product detection module, a central control module, and an execution and adjustment module connected in sequence;

[0006] The raw material detection module is used to detect the initial parameters of the steel billet entering the rolling production line, including the cross-sectional size, temperature and material information of the steel billet;

[0007] The multiple groups of rolling units are sequentially arranged along the rolling direction of the steel billet, and each group of rolling units includes a rolling mill body, an entrance detection component arranged at the entrance of the rolling mill body, and an exit detection component at the exit, the entrance detection component is used to detect the real-time parameters of the steel billet entering the rolling mill body, and the exit detection component is used to detect the real-time parameters of the steel billet after rolling through the rolling mill body, and the real-time parameters include cross-sectional dimensions and temperature;

[0008] The finished product detection module is used to detect the parameters of the finished steel products after being rolled by all rolling units;

[0009] The central control module is respectively connected to the raw material detection module, the entrance detection components and exit detection components of multiple rolling units, the finished product detection module and the execution and adjustment module, and is used to receive parameter information sent by each detection module and detection component, and generate adjustment instructions according to the preset rolling model and parameter information and send them to the execution and adjustment module;

[0010] The execution adjustment module is connected to multiple groups of rolling units and is used to adjust the rolling parameters of the rolling mill body according to the adjustment instructions. The rolling parameters include rolling force, rolling speed, and roll gap.

[0011] According to a further technical solution, the central control module includes a model building unit, a parameter analysis unit and an instruction generation unit;

[0012] The model building unit is used to build a corresponding rolling model according to the material information of the steel billet and the preset rolling requirements, and the rolling model includes the optimal rolling parameters corresponding to different steel billet parameters;

[0013] The parameter analysis unit is used to compare and analyze the parameter information sent by the raw material detection module, the inlet detection component, the outlet detection component and the finished product detection module with the standard parameters in the rolling model to determine the parameter deviation;

[0014] The instruction generating unit is used to generate corresponding adjustment instructions according to the parameter deviation.

[0015] According to a further technical solution, the execution adjustment module includes a rolling force adjustment component, a rolling speed adjustment component and a roll gap adjustment component;

[0016] The rolling force adjustment component is connected to the rolling force driving device of the rolling mill body and is used to adjust the rolling force of the rolling mill body according to the adjustment instruction;

[0017] The rolling speed regulating assembly is connected to the driving motor of the rolling mill body and is used to regulate the rolling speed of the rolling mill body according to the regulating instruction;

[0018] The roll gap adjustment assembly is connected to the roll gap adjustment device of the rolling mill body and is used to adjust the roll gap of the rolling mill body according to the adjustment instruction.

[0019] A control method for a continuous steel rolling production line, applied to the control system of any of the above-mentioned continuous steel rolling production lines, comprises the following steps:

[0020] S1. The raw material detection module detects the initial parameters of the steel billet entering the rolling production line and sends the initial parameters to the central control module;

[0021] S2. The central control module calls the corresponding rolling model from the preset rolling model library according to the material information in the initial parameters of the steel billet and the preset rolling requirements;

[0022] S3. The steel billet enters the first rolling unit. The entrance detection component of the rolling unit detects the real-time parameters of the steel billet and sends the detected real-time parameters to the central control module.

[0023] S4. The central control module compares the real-time parameters detected by the entry detection component with the standard entry parameters in the rolling model. If there is a deviation, the central control module generates a first adjustment instruction and sends it to the execution adjustment module. The execution adjustment module adjusts the rolling parameters of the rolling mill body of the rolling unit according to the first adjustment instruction.

[0024] S5. After the steel billet is rolled by the rolling mill body of the rolling unit, the exit detection component detects the real-time parameters of the rolled steel billet and sends the detected real-time parameters to the central control module;

[0025] S6. The central control module compares the real-time parameters detected by the outlet detection component with the standard outlet parameters in the rolling model. If there is a deviation, a second adjustment instruction is generated and sent to the execution adjustment module. The execution adjustment module adjusts the rolling parameters of the rolling mill body of the rolling unit according to the second adjustment instruction and uses the deviation information as a pre-adjustment reference for the next group of rolling units.

[0026] S7, the steel billet enters the subsequent rolling units in sequence, and steps S3-S6 are repeated;

[0027] S8. After the steel billet is rolled through all rolling units, it becomes a finished steel product. The finished product detection module detects the parameters of the finished steel product and sends the detected parameters to the central control module;

[0028] S9. The central control module compares the parameters of the finished steel with the preset standard parameters of the finished product. If there is a deviation, the cause of the deviation is analyzed and the rolling models of all rolling units are optimized and updated based on the cause of the deviation.

[0029] A further technical solution, in step S4, the process of generating the first adjustment instruction is: the central control module calculates the deviation value between the real-time parameters detected by the entry detection component and the standard entry parameters, and generates the first adjustment instruction according to the size and direction of the deviation value and the corresponding parameter adjustment coefficient in the rolling model, wherein the parameter adjustment coefficient is the rolling parameter adjustment amount corresponding to different deviation values ​​determined in advance based on a large amount of rolling experimental data.

[0030] A further technical solution is that in step S6, the specific process of using the deviation information as a pre-adjustment reference for the next group of rolling units is as follows: the central control module converts the parameter deviation at the outlet of the current rolling unit into the pre-adjustment amount at the entrance of the next group of rolling units, generates a pre-adjustment instruction and sends it to the execution adjustment module, and the execution adjustment module pre-adjusts the rolling parameters of the rolling mill body of the next group of rolling units according to the pre-adjustment instruction before the steel billet enters the next group of rolling units.

[0031] According to a further technical solution, in step S9, the specific process of optimizing and updating the rolling models of all rolling units is as follows: the central control module determines the rolling unit where the deviation is the main source based on the parameter deviation of the finished steel product and the parameter detection data of each rolling unit, and then corrects the standard parameters and parameter adjustment coefficients in the rolling model corresponding to the rolling unit based on the deviation value and the historical adjustment data of the rolling unit, and updates the rolling model library at the same time.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention provides comprehensive monitoring and precise adjustment: Through the raw material detection module, the inlet and outlet detection components of each rolling unit, and the finished product detection module, the present invention conducts comprehensive parameter detection on the entire process from the steel billet entering the production line to the formation of the finished product. The central control module compares and analyzes the detected parameters with the rolling model and generates adjustment instructions to achieve precise adjustment of the rolling process and improve rolling accuracy.

[0034] The present invention provides real-time feedback and reduces hysteresis: in each rolling unit, parameter detection is performed through the inlet and outlet detection components respectively, and the rolling parameters of the rolling unit are adjusted in real time according to the detection results, thus avoiding the problem of adjustment hysteresis and ensuring the rolling quality of each rolling link;

[0035] The present invention achieves synergy and reduces deviation accumulation: the outlet parameter deviation of the current rolling unit is used as a pre-adjustment reference for the next group of rolling units, thus achieving synergy between the rolling units, effectively reducing deviation accumulation and improving the quality stability of the finished steel.

[0036] The present invention optimizes the model and continuously improves it: the rolling model is optimized and updated according to the parameter deviation of the finished steel product, so that the rolling model can adapt to different rolling conditions and steel billet characteristics, thereby achieving continuous improvement of the rolling process and further improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the structure of the control system of the present invention;

[0038] Figure 2 is a flow chart of the control method of the present invention;

[0039] Figure 3 Schematic diagram of the parameter adjustment relationship of each rolling unit in the present invention. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the embodiments.

[0041] The following examples are intended to illustrate the present invention but are not intended to limit the scope of protection of the present invention. The conditions in the examples may be further adjusted according to specific conditions. Simple improvements to the method of the present invention within the scope of the present invention are also within the scope of protection claimed in the present invention.

[0042] Example 1

[0043] See also Figure 1-3 The present invention provides a control system for a continuous rolling production line for steel rolling, which includes a raw material detection module, three groups of rolling units, a finished product detection module, a central control module and an execution adjustment module.

[0044] The raw material detection module uses a laser diameter gauge and an infrared thermometer to detect the cross-sectional dimensions and temperature of the steel billet, while also detecting the material information of the steel billet through a material identification sensor.

[0045] The entrance and exit detection components of each rolling unit adopt the same laser diameter gauge and infrared thermometer as the raw material detection module to detect the cross-sectional size and temperature of the steel billet. The rolling mill body adopts a four-roll reversing rolling mill.

[0046] The central control module uses an industrial computer with a built-in rolling model library. The model library stores rolling models corresponding to different materials and specifications of steel billets, including standard inlet parameters, standard outlet parameters and parameter adjustment coefficients;

[0047] The rolling force adjustment component of the executive adjustment module adopts a hydraulic adjustment device, which is connected to the hydraulic cylinder of the rolling mill; the rolling speed adjustment component adopts a variable frequency speed regulator, which is connected to the drive motor of the rolling mill; the roll gap adjustment component adopts a screw adjustment device driven by a servo motor, which is connected to the roll bearing seat of the rolling mill.

[0048] In this embodiment, the detection is accurate and reliable: high-precision detection equipment such as laser diameter gauges, infrared thermometers and material identification sensors are used to accurately obtain key parameters such as the cross-sectional size, temperature and material of the steel billet, providing accurate basic data for subsequent rolling control and ensuring accurate understanding of the initial state of the steel billet and the state during the rolling process;

[0049] Efficient control center: The central control module uses an industrial computer with a built-in rolling model library corresponding to steel billets of different materials and specifications. It can quickly call the appropriate rolling model, providing strong support for parameter analysis and instruction generation, ensuring the timeliness and scientificity of control decisions;

[0050] The adjustment components have strong adaptability: the various components of the execution adjustment module (hydraulic adjustment device, frequency converter, and servo motor-driven screw adjustment device) are precisely connected to the corresponding devices of the rolling mill. They can efficiently and accurately adjust the rolling force, rolling speed and roll gap according to the adjustment instructions, ensuring precise control of rolling parameters.

[0051] Example 2

[0052] This embodiment provides a control method for a continuous steel rolling production line, which is applied to the control system of Example 1. The specific steps are as follows:

[0053] S1: The raw material detection module detects the Q235 steel billet entering the production line and obtains the initial cross-sectional dimensions of 200mm×200mm, the initial temperature of 1100℃, and the material of Q235, and sends these parameters to the central control module;

[0054] S2: The central control module calls the corresponding rolling model from the rolling model library based on the Q235 material and the preset finished product specifications (100mm×100mm). In this model, the standard inlet cross-sectional dimensions of the first group of rolling units are 200mm×200mm, the standard inlet temperature is 1100℃, and the standard outlet cross-sectional dimensions are 160mm×160mm; the standard inlet cross-sectional dimensions of the second group of rolling units are 160mm×160mm, and the standard outlet cross-sectional dimensions are 130mm×130mm; the standard inlet cross-sectional dimensions of the third group of rolling units are 130mm×130mm, and the standard outlet cross-sectional dimensions are 100mm×100mm.

[0055] S3: The billet enters the first rolling unit. The entrance detection component detects that the real-time cross-sectional dimensions of the billet are 198 mm × 198 mm and the real-time temperature is 1090°C, and sends these parameters to the central control module.

[0056] S4: The central control module compares the detected real-time parameters with the standard input parameters. The cross-sectional dimension deviation is -2mm, and the temperature deviation is -10°C. According to the parameter adjustment coefficients in the rolling model, for every 1mm deviation in cross-sectional dimension, the roll gap is adjusted by 0.5mm. For every 10°C decrease in temperature, the rolling force is increased by 50kN. Therefore, the central control module generates a first adjustment instruction, instructing the rolling force adjustment component to increase the rolling force by 100kN and the roll gap adjustment component to reduce the roll gap by 1mm. The execution adjustment module performs adjustments according to the instructions.

[0057] S5: After the billet is rolled by the first set of rolling units, the exit detection component detects that the real-time cross-sectional dimensions of the billet are 158 mm × 158 mm and the real-time temperature is 1000°C, and sends these parameters to the central control module;

[0058] S6: The central control module compares the detected real-time parameters with the standard export parameters. The cross-sectional dimension deviation is -2mm and the temperature deviation is -20°C. A second adjustment instruction is generated, instructing the rolling force adjustment component to increase the rolling force by another 100kN and the roll gap adjustment component to reduce the roll gap by another 1mm. At the same time, the cross-sectional dimension deviation of -2mm is converted into a pre-adjustment amount for the second group of rolling units, that is, the roll gap is pre-reduced by 1mm. A pre-adjustment instruction is generated and sent to the execution adjustment module, which performs pre-adjustment on the second group of rolling units.

[0059] S7: The billet enters the second rolling unit and steps S3-S6 are repeated. The entrance detection component detects that the cross-sectional size of the billet is 158mm×158mm. After pre-adjustment, further adjustments are made during the rolling process based on the detection results. The final exit cross-sectional size is 130mm×130mm, which meets the standard.

[0060] S8: The billet enters the third rolling unit and repeats steps S3-S6 to finally form a finished steel product. The finished product inspection module detects that the cross-sectional dimensions of the finished steel product are 99 mm × 99 mm, which meets the preset finished product standard parameters (100 mm × 100 mm allows a deviation of ± 1 mm).

[0061] S9: The central control module compares the parameters of the finished product. If the deviation is within the allowable range, there is no need to optimize or update the rolling model.

[0062] In this embodiment, real-time adjustment is implemented to ensure link quality: In each rolling unit, inlet and outlet detection components detect billet parameters in real time. The central control module generates adjustment instructions in a timely manner based on the deviations, and the execution adjustment module responds quickly. This enables real-time adjustment of each rolling link, avoids the impact of cumulative parameter deviations on subsequent rolling, and ensures the rolling quality of each link.

[0063] Collaboration to reduce deviation accumulation: The exit parameter deviation of the current rolling unit is converted into a pre-adjustment reference for the next group of rolling units, so that the next group of rolling units can make targeted adjustments before the billet enters. This achieves collaborative work between the rolling units, effectively reduces the transmission and accumulation of deviations, and improves the quality stability of the finished steel.

[0064] Meets expectations and is highly efficient: The parameters of the final steel product are within the allowable deviation range, indicating that the control method can complete the rolling process according to the preset requirements without the need for model optimization, reducing additional adjustment work and improving production efficiency.

[0065] Example 3

[0066] The difference between this embodiment and embodiment 2 is that the finished product detection module detects that the cross-sectional dimensions of the finished steel product are 97 mm × 97 mm, and the deviation exceeds the allowable range;

[0067] The central control module analyzed the causes of the deviation and, in combination with the parameter detection data of each rolling unit, found that the large deviation in the outlet cross-sectional dimensions of the third group of rolling units was the main cause of the deviation in the finished product. Based on the deviation value of -3mm and the historical adjustment data of the third group of rolling units, the standard outlet parameters and parameter adjustment coefficients in the rolling model corresponding to the unit were corrected, and the allowable deviation range of the standard outlet cross-sectional dimensions was adjusted to ±0.5mm. The parameter adjustment coefficient was adjusted to 0.6mm for every 1mm deviation in the cross-sectional dimensions, and the rolling model library was updated.

[0068] In this embodiment, the deviation source is precisely located: when the deviation of the finished product parameter exceeds the allowable range, the central control module can combine the parameter detection data of each rolling unit to accurately determine the rolling unit where the deviation is mainly caused, providing a clear target for subsequent model optimization;

[0069] Model optimization and continuous improvement: Based on the deviation value and the historical adjustment data of the corresponding rolling unit, the standard parameters and parameter adjustment coefficients in the rolling model of the unit are corrected, and the model library is updated to make the rolling model better adapt to the actual rolling conditions. This achieves continuous improvement of the rolling process and helps to improve the accuracy of subsequent rolling and the stability of product quality.

[0070] Enhanced system adaptability: By optimizing the model, the control system can better cope with various possible deviations, enhance the system's adaptability to different rolling conditions and billet characteristics, and provide a guarantee for long-term stable production.

[0071] The working principle of the present invention is:

[0072] The control system of the present invention obtains initial information about the steel billet through the raw material detection module, providing basic data for subsequent rolling. The central control module calls the appropriate rolling model based on the initial information. When the steel billet enters each rolling unit, the entrance detection component detects the parameters in real time and feeds them back to the central control module. The central control module compares the parameter deviations and generates adjustment instructions. The execution adjustment module adjusts the rolling mill parameters to ensure that the steel billet meets expectations when entering the rolling mill.

[0073] After the billet passes through the rolling mill, the exit detection component re-detects the parameters. The central control module adjusts the mill parameters again based on the deviation from the standard exit parameters. At the same time, the deviation information is converted into the pre-adjustment amount for the next group of rolling units, enabling the coordinated operation of each unit to reduce the accumulation of deviations.

[0074] Finally, the finished product detection module detects the finished product parameters, and the central control module analyzes the causes based on the deviations and optimizes the rolling model, so that the system can continuously adapt to different rolling conditions and improve rolling accuracy and product quality stability.

[0075] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A control system for a continuous steel rolling production line, characterized in that: It includes a raw material detection module, multiple rolling units, a finished product detection module, a central control module and an execution adjustment module connected in sequence; The raw material detection module is used to detect the initial parameters of the steel billet entering the rolling production line, including the cross-sectional size, temperature and material information of the steel billet; The multiple groups of rolling units are sequentially arranged along the rolling direction of the steel billet, and each group of rolling units includes a rolling mill body, an entrance detection component arranged at the entrance of the rolling mill body, and an exit detection component at the exit, the entrance detection component is used to detect the real-time parameters of the steel billet entering the rolling mill body, and the exit detection component is used to detect the real-time parameters of the steel billet after rolling through the rolling mill body, and the real-time parameters include cross-sectional dimensions and temperature; The finished product detection module is used to detect the parameters of the finished steel products after being rolled by all rolling units; The central control module is respectively connected to the raw material detection module, the entrance detection components and exit detection components of multiple rolling units, the finished product detection module and the execution and adjustment module, and is used to receive parameter information sent by each detection module and detection component, and generate adjustment instructions according to the preset rolling model and parameter information and send them to the execution and adjustment module; The execution adjustment module is connected to multiple groups of rolling units and is used to adjust the rolling parameters of the rolling mill body according to the adjustment instructions. The rolling parameters include rolling force, rolling speed, and roll gap.

2. The control system of the steel rolling continuous rolling production line according to claim 1, characterized in that: The central control module includes a model building unit, a parameter analysis unit and an instruction generation unit; The model building unit is used to build a corresponding rolling model according to the material information of the steel billet and the preset rolling requirements, and the rolling model includes the optimal rolling parameters corresponding to different steel billet parameters; The parameter analysis unit is used to compare and analyze the parameter information sent by the raw material detection module, the inlet detection component, the outlet detection component and the finished product detection module with the standard parameters in the rolling model to determine the parameter deviation; The instruction generating unit is used to generate corresponding adjustment instructions according to the parameter deviation.

3. The control system of the steel rolling continuous rolling production line according to claim 1, characterized in that: The execution adjustment module includes a rolling force adjustment component, a rolling speed adjustment component and a roll gap adjustment component; The rolling force adjustment component is connected to the rolling force driving device of the rolling mill body and is used to adjust the rolling force of the rolling mill body according to the adjustment instruction; The rolling speed regulating assembly is connected to the driving motor of the rolling mill body and is used to regulate the rolling speed of the rolling mill body according to the regulating instruction; The roll gap adjustment assembly is connected to the roll gap adjustment device of the rolling mill body and is used to adjust the roll gap of the rolling mill body according to the adjustment instruction.

4. A control method for a continuous steel rolling production line, applied to the control system of the continuous steel rolling production line according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1. The raw material detection module detects the initial parameters of the steel billet entering the rolling production line and sends the initial parameters to the central control module; S2. The central control module calls the corresponding rolling model from the preset rolling model library according to the material information in the initial parameters of the steel billet and the preset rolling requirements; S3. The steel billet enters the first rolling unit. The entrance detection component of the rolling unit detects the real-time parameters of the steel billet and sends the detected real-time parameters to the central control module. S4. The central control module compares the real-time parameters detected by the entry detection component with the standard entry parameters in the rolling model. If there is a deviation, the central control module generates a first adjustment instruction and sends it to the execution adjustment module. The execution adjustment module adjusts the rolling parameters of the rolling mill body of the rolling unit according to the first adjustment instruction. S5. After the steel billet is rolled by the rolling mill body of the rolling unit, the exit detection component detects the real-time parameters of the rolled steel billet and sends the detected real-time parameters to the central control module; S6. The central control module compares the real-time parameters detected by the outlet detection component with the standard outlet parameters in the rolling model. If there is a deviation, a second adjustment instruction is generated and sent to the execution adjustment module. The execution adjustment module adjusts the rolling parameters of the rolling mill body of the rolling unit according to the second adjustment instruction and uses the deviation information as a pre-adjustment reference for the next group of rolling units. S7, the steel billet enters the subsequent rolling units in sequence, and steps S3-S6 are repeated; S8. After the steel billet is rolled through all rolling units, it becomes a finished steel product. The finished product detection module detects the parameters of the finished steel product and sends the detected parameters to the central control module; S9. The central control module compares the parameters of the finished steel with the preset standard parameters of the finished product. If there is a deviation, the cause of the deviation is analyzed and the rolling models of all rolling units are optimized and updated based on the cause of the deviation.

5. The control method of a continuous steel rolling production line according to claim 4, characterized in that: In step S4, the generation process of the first adjustment instruction is: the central control module calculates the deviation value between the real-time parameters detected by the entry detection component and the standard entry parameters, and generates the first adjustment instruction based on the size and direction of the deviation value and the corresponding parameter adjustment coefficient in the rolling model, wherein the parameter adjustment coefficient is the rolling parameter adjustment amount corresponding to different deviation values ​​determined in advance based on a large amount of rolling experimental data.

6. The control method of a steel rolling continuous rolling production line according to claim 4, characterized in that: In step S6, the specific process of using the deviation information as a pre-adjustment reference for the next group of rolling units is as follows: the central control module converts the parameter deviation at the outlet of the current rolling unit into the pre-adjustment amount at the entrance of the next group of rolling units, generates a pre-adjustment instruction and sends it to the execution adjustment module. Before the steel billet enters the next group of rolling units, the execution adjustment module pre-adjusts the rolling parameters of the rolling mill body of the next group of rolling units according to the pre-adjustment instruction.

7. The control method of a continuous steel rolling production line according to claim 4, characterized in that: In step S9, the specific process of optimizing and updating the rolling models of all rolling units is as follows: the central control module determines the rolling unit where the deviation is the main source based on the parameter deviation of the finished steel product and the parameter detection data of each rolling unit, and then corrects the standard parameters and parameter adjustment coefficients in the rolling model corresponding to the rolling unit based on the deviation value and the historical adjustment data of the rolling unit, and updates the rolling model library at the same time.

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