Production control method, device and equipment for hot rolling production line

Abstract

The invention discloses a production control method, device and equipment of a hot rolling production line, the hot rolling production line comprises a heating furnace and a finishing mill group, and the method comprises the following steps: obtaining production information of the hot rolling production line, the production information comprises the specification of a slab to be machined, the specification of required strip steel, the first target slab temperature of an outlet of a heating furnace and the second target slab temperature of an outlet of a finishing mill group; based on the production information, the machining time needed by the to-be-machined plate blank is determined; and based on the machining time of the to-be-machined plate blank, the hot rolling production line is controlled to machine the to-be-machined plate blank, so that a strip steel product conforming to the strip steel specification is produced. According to the invention, the technical problem of unstable product performance of the strip steel is solved.

Description

Technical Field

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

[0002] In the process of processing slabs in hot rolling production lines to produce strip steel, the processing time of slabs is mainly determined by manual experience, which is very arbitrary. Inaccurate control of processing time will lead to unstable product performance of strip steel. For example, if the pure rolling time of the finishing mill is too long, the deformation of the strip steel will be too large, which will not meet the performance requirements of the strip steel products, increase the defective rate, and reduce the competitiveness of the enterprise. Therefore, the unstable product performance of strip steel is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present invention provide a production control method, device and equipment for a hot rolling production line, which solve the technical problem of unstable product performance of strip steel.

[0004] In a first aspect, an embodiment of the present invention provides a production control method for a hot rolling production line, wherein the hot rolling production line includes a heating furnace and a finishing rolling unit, and the method includes: obtaining production information of the hot rolling production line, wherein the production information includes specifications of a slab to be processed, required strip steel specifications, a first target slab temperature at the outlet of the heating furnace, and a second target slab temperature at the outlet of the finishing rolling unit; based on the production information, determining a processing time required for the slab to be processed; based on the processing time of the slab to be processed, controlling the hot rolling production line to process the slab to be processed, so as to produce a strip steel product that meets the strip steel specifications.

[0005] In combination with the first aspect of the present invention, in some embodiments, the hot rolling production line also includes a roughing mill and a coiler, and determining the processing time required for the slab to be processed based on the production information includes: determining the heating time of the slab to be processed in the heating furnace based on the production information; determining the rough rolling time of the slab to be processed in the roughing mill based on the production information; determining the pure rolling time of the slab to be processed in the finishing mill based on the production information; determining the coiling time of the slab to be processed in the coiler based on the production information; and taking the heating time, the rough rolling time, the pure rolling time and the coiling time as the processing time of the slab to be processed.

[0006] In combination with the first aspect of the present invention, in some embodiments, determining the pure rolling time of the slab to be processed in the finishing mill based on the production information includes: inputting the production information into a preset time prediction model to obtain the pure rolling time of the slab to be processed in the finishing mill.

[0007] In combination with the first aspect of the present invention, in some embodiments, the time prediction model is established through the following steps: obtaining the first historical strip steel production data, the first historical strip steel production data including a plurality of production sub-data, each of the production sub-data including the specification of the slab in the strip steel production process, the specification of the strip steel, the first target slab temperature at the outlet of the heating furnace, the second target slab temperature at the outlet of the finishing mill, and the pure rolling time of the slab in the finishing mill; fitting the first historical strip steel production data to obtain the time prediction model.

[0008] In combination with the first aspect of the present invention, in some embodiments, the obtaining of the first historical strip steel production data includes: obtaining the second historical strip steel production data, the second historical strip steel production data including a plurality of the production sub-data, and the second historical strip steel production data is greater than the number of production sub-data of the first historical strip steel production data; eliminating abnormal production sub-data in the second historical strip steel production data to obtain the first historical strip steel production data.

[0009] In combination with the first aspect of the present invention, in some embodiments, the strip steel specification includes the strip steel thickness of the strip steel product, and determining the coiling time of the slab to be processed on the coiler based on the production information includes: determining the coiling time of the slab to be processed on the coiler based on the strip steel thickness of the strip steel product.

[0010] In combination with the first aspect of the present invention, in some embodiments, the determining of the coiling time of the slab to be processed on the coiler based on the strip thickness of the strip steel product includes: if the strip thickness of the strip steel product is within a preset first thickness range, using the preset first time as the coiling time of the slab to be processed on the coiler; if the strip thickness of the strip steel product is within a preset second thickness range, using the preset second time as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the second thickness range is greater than the upper limit value of the first thickness range, and the duration of the second time is greater than the first time; if the strip thickness of the strip steel product is within a preset third thickness range, using the preset third time as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the third thickness range is greater than the upper limit value of the second thickness range, and the duration of the third time is greater than the second time.

[0011] In combination with the first aspect of the present invention, in some embodiments, the hot rolling production line is controlled to process the slab to be processed based on the processing time of the slab to be processed, including: controlling the processing of the slab to be processed in the heating furnace according to the heating time of the slab to be processed in the heating furnace; controlling the processing of the slab to be processed in the roughing mill according to the rough rolling time of the slab to be processed in the roughing mill; controlling the processing of the slab to be processed in the finishing mill according to the pure rolling time of the slab to be processed in the finishing mill; controlling the processing of the slab to be processed in the coiler according to the coiling time of the slab to be processed in the coiler.

[0012] In a second aspect, an embodiment of the present invention provides a production control device for a hot rolling production line, wherein the hot rolling production line includes a heating furnace and a finishing rolling mill, and the device includes: an information acquisition unit, used to acquire production information of the hot rolling production line, wherein the production information includes specifications of a slab to be processed, required strip specifications, a first target slab temperature at the outlet of the heating furnace, and a second target slab temperature at the outlet of the finishing rolling mill; a time determination unit, used to determine the processing time required for the slab to be processed based on the production information; and a processing control unit, used to control the hot rolling production line to process the slab to be processed based on the processing time of the slab to be processed, so as to produce a strip product that meets the strip specifications.

[0013] In a third aspect, an embodiment of the present invention provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any one of the methods described in the first aspect when executing the computer program.

[0014] One or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:

[0015] The embodiment of the present invention obtains the production information of the hot rolling production line, the production information includes the specifications of the slab to be processed, the required strip steel specifications, the first target slab temperature at the outlet of the heating furnace, and the second target slab temperature at the outlet of the finishing mill; based on the production information, the processing time required for the slab to be processed is determined; based on the processing time of the slab to be processed, the hot rolling production line is controlled to process the slab to be processed to produce a strip steel product that meets the strip steel specifications. Determining the processing time of the slab to be processed based on the production information not only considers the actual product demand of the strip steel product, but also considers the actual specifications of the slab to be processed to determine the processing time of the slab to be processed, that is, determining the processing time of the slab to be processed according to the actual production situation, avoiding relying on manual experience to determine the processing time, and improving the control accuracy of the processing time. Therefore, the product performance stability of the strip steel is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 Flow chart of a production control method for a hot rolling production line according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a hot rolling production line in an embodiment of the present invention;

[0019] Figure 3 It is a functional module diagram of a production control device for a hot rolling production line in an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] The embodiment of the present invention provides a production control method for a hot rolling production line, wherein the hot rolling production line includes a heating furnace and a finishing mill group. Figure 1 As shown, the method includes the following steps S101 to S103:

[0024] S101: Acquire production information of the hot rolling production line, the production information including specifications of the slab to be processed, specifications of the required strip steel, a first target slab temperature at the outlet of the heating furnace, and a second target slab temperature at the outlet of the finishing mill.

[0025] It should be noted that the specifications of the slab to be processed may include the slab thickness, slab width and slab length of the slab to be processed, and the strip specifications may include the strip thickness, strip width and strip length of the strip product. The first target slab temperature at the outlet of the heating furnace is the temperature at which the slab to be processed is expected to reach at the outlet of the heating furnace, and the second target slab temperature at the outlet of the finishing mill is the temperature at which the slab to be processed is expected to reach at the outlet of the finishing mill.

[0026] refer to Figure 2 As shown, Figure 2 Schematic diagram of a hot rolling production line in an embodiment of the present invention. In the hot rolling production line, the process of processing the slab to be processed sequentially passes through a heating furnace, a rough rolling unit, a finishing rolling unit and a coiler.

[0027] S102: Based on the production information, determine the processing time required for the slab to be processed.

[0028] In some embodiments, the hot rolling production line further includes a roughing mill and a coiler, and step S102 may include the following steps S1021 to S1025:

[0029] S1021: Based on the production information, determine the heating time of the slab to be processed in the heating furnace.

[0030] S1022: Based on the production information, determine the rough rolling time of the slab to be processed in the rough rolling mill.

[0031] S1023: Based on the production information, determine the pure rolling time of the slab to be processed in the finishing mill.

[0032] In some embodiments, step S1023 may include: inputting the production information into a preset time prediction model to obtain the pure rolling time of the slab to be processed in the finishing mill.

[0033] In some embodiments, the time prediction model is established through the following steps: obtaining the first historical strip steel production data, the first historical strip steel production data including multiple production sub-data, each production sub-data including the specification of the slab in the strip steel production process, the specification of the strip steel, the first target slab temperature at the outlet of the heating furnace, the second target slab temperature at the outlet of the finishing mill, and the pure rolling time of the slab in the finishing mill; fitting the first historical strip steel production data to obtain the time prediction model.

[0034] It should be noted that the time prediction model can be a function, for example: pure rolling time = K

[0035] +a×slab length+y×slab width+p×slab thickness-z×strip thickness-

[0036] k×strip width+m×first target slab temperature-n×second target slab temperature+D, where K is the reference time, used to control the basic rhythm standard of different slabs, a, y, p, z, k, m, n are proportional coefficients, and different steel grades have different coefficients, and D is the compensation value.

[0037] In some embodiments, obtaining the first historical strip steel production data may include: obtaining the second historical strip steel production data, the second historical strip steel production data including multiple production sub-data, and the second historical strip steel production data is greater than the number of production sub-data of the first historical strip steel production data; eliminating abnormal production sub-data in the second historical strip steel production data to obtain the first historical strip steel production data.

[0038] It should be noted that abnormal production sub-data may refer to that the pure rolling time of the production sub-data is too long. Since there are abnormal production sub-data in the second historical strip steel production data, if the second historical strip steel production data is directly fitted to obtain a time prediction model, the time prediction model will have a low precision problem. Therefore, the embodiment of the present invention improves the accuracy of the data by limiting and eliminating the abnormal production sub-data in the second historical strip steel production data, avoids obtaining a time prediction model based on error data, improves the precision of the time prediction model, and further improves the control precision of the processing time of the slab to be processed.

[0039] S1024: Based on the production information, determine the coiling time of the slab to be processed on the coiler.

[0040] In some embodiments, the strip steel specification may include the strip steel thickness of the strip steel product. Step S1024 may include: determining the coiling time of the slab to be processed on the coiler based on the strip steel thickness of the strip steel product.

[0041] In some embodiments, determining the coiling time of the slab to be processed on the coiler based on the strip thickness of the strip steel product may include: if the strip thickness of the strip steel product is within a preset first thickness range, using the preset first time as the coiling time of the slab to be processed on the coiler; if the strip thickness of the strip steel product is within a preset second thickness range, using the preset second time as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the second thickness range is greater than the upper limit value of the first thickness range, and the duration of the second time is greater than the first time; if the strip thickness of the strip steel product is within a preset third thickness range, using the preset third time as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the third thickness range is greater than the upper limit value of the second thickness range, and the duration of the third time is greater than the second time.

[0042] It should be noted that the first thickness range may be a thickness less than or equal to 3 mm, the second thickness range may be a range greater than 3 mm and less than 13 mm, and the third thickness range may be a range greater than or equal to 13 mm.

[0043] It should be noted that since the thicker the strip is, the longer its coiling time is, different coiling times are assigned to strips of different thicknesses, thereby improving the control accuracy of the coiling time.

[0044] In other embodiments, determining the coiling time of the slab to be processed on the coiler based on the strip thickness of the strip steel product may include: taking the difference between the strip thickness of the strip steel product and the reference thickness as the thickness difference; and correcting the preset reference coiling time based on the thickness difference to obtain the coiling time of the slab to be processed on the coiler.

[0045] S1025: The heating time, the rough rolling time, the pure rolling time and the coiling time are used as the processing time of the slab to be processed.

[0046] S103: Based on the processing time of the slab to be processed, the hot rolling production line is controlled to process the slab to be processed, so as to produce a strip steel product that meets the strip steel specifications.

[0047] In some embodiments, step S103 may include: controlling the processing of the slab to be processed in the heating furnace according to the heating time of the slab to be processed in the heating furnace; controlling the processing of the slab to be processed in the roughing mill according to the rough rolling time of the slab to be processed in the roughing mill; controlling the processing of the slab to be processed in the finishing mill according to the pure rolling time of the slab to be processed in the finishing mill; controlling the processing of the slab to be processed in the coiler according to the coiling time of the slab to be processed in the coiler.

[0048] It should be noted that the embodiment of the present invention may also not distinguish between heating time, rough rolling time, pure rolling time and coiling time, and directly obtain the processing time of the whole process according to the production information. After allocating the processing time of the whole process to each stage, the process of determining the processing time can be simplified and the complexity can be reduced. However, there is also a problem of low accuracy, because allocating the processing time of the whole process to each stage is prone to inaccurate allocation. For example, the processing time of thin-gauge strip steel is mainly consumed in the finishing mill, and the processing time of thick-gauge strip steel is mainly consumed in the coiler. Therefore, the embodiment of the present invention is limited to first determining the heating time, rough rolling time, pure rolling time and coiling time according to the production information, and then obtaining the processing time of the slab to be processed according to the time of different stages, and making a detailed distinction between each processing stage according to the specific production situation, thereby improving the control accuracy of the processing time of the slab to be processed.

[0049] It should be noted that the hot rolling production line can be a hot rolling 2250 production line. In the process of slab production, it is necessary to manually control the rolling rhythm and control the residence time of the slab at different stages, which consumes a certain amount of manpower and material resources. Due to differences in personnel operation levels, abnormal steel swinging often occurs, resulting in uneven production rhythms of different slabs and even affecting product quality. For high-level products such as automobile outer plates, there are extremely high requirements for the rolling rhythm of the production line and the stability of the performance of finished coil steel. Therefore, the embodiment of the present invention integrates the rolling rhythm control rules of different slab steel grades by fitting and calculating the pure rolling time of different slabs, while considering the rhythm influence bottlenecks of different finished product specifications. The actual application results show that the embodiment of the present invention can effectively improve the rhythm control stability. The embodiment of the present invention identifies important influencing factors based on historical rolling data, fits and calculates the calculation formula of the pure rolling time of the slab, and obtains the rolling rhythm control standards of different steel grades based on the influencing bottleneck points of different finished product specifications, which is helpful for the control of the rolling rhythm of the production line and saves manpower and material resources.

[0050] It should be noted that as the rolling rhythm of the hot rolling production line increases, the rhythm of the slab is evenly controlled, which helps to improve the stability of product performance and reduce the fluctuation of the mechanical properties of the strip. However, it was found during the on-site production process that the operator needs to swing the steel temperature and adjust the cooling time of the intermediate slab according to the empirical value, so as to control the temperature of the slab at each stage. Considering that there is a certain corresponding relationship between the pure rolling time of slabs of the same steel grade, the embodiment of the present invention removes abnormal control points through actual control conditions, fits the calculation formula of the pure rolling time, and at the same time, considers the different bottlenecks affecting the rhythm of different specifications, and derives the rolling rhythm control standard.

[0051] It should be noted that when the slab is rolled in the finishing area, since the finishing inlet temperature is basically fixed, the pure rolling time of the slab of the same specification can be basically unchanged. The pure rolling time of the slab, that is, the time from the slab biting the steel in the F1 mill to the F7 mill throwing the steel in the finishing area, is affected by factors such as the length of the intermediate slab. The same steel grade, its rolling rhythm is affected by different slab lengths, slab widths, strip thickness, strip width, etc., and there is a certain corresponding relationship between its pure rolling time. Different finished product specifications have different rolling rhythm bottlenecks. The main bottleneck point of thin specifications is in the finishing area, and the main bottleneck point of thick specifications is in the coiling area. Considering the calculation problem of the slab in the heating furnace area, the inlet temperature of the slab in the finishing area can be estimated, so that the rolling speed and acceleration of the slab can be basically determined. Different slab steel grades are distinguished according to the major steel types, and their rolling rhythms are basically the same. Considering the actual rolling situation of the slab, the first-level swing steel control signal is recorded and transmitted to the second-level model. Mark the abnormal rolls of rhythm control, and remove the abnormal control points when updating the basic database later. Regularly update the database of slab rolling rhythm standards, train the rhythm standards, and realize automatic update of calculation standards.

[0052] It should be noted that the processing time of the slab to be processed can also be determined based on the pure rolling time.

[0053] For example, assuming that the strip thickness of the strip steel product is greater than or equal to 13mm, the processing time of the slab to be processed can be set to pure rolling time + a, where a is the processing time other than pure rolling time, and a can be set to 40 seconds. Assuming that the strip thickness of the strip steel product is less than or equal to 3mm, then the processing time of the slab to be processed can be set to pure rolling time + b, where b is the processing time other than pure rolling time, and b can be set to 15 seconds. Assuming that the strip thickness of the strip steel product is greater than 3mm and less than 13mm, and the pure rolling time is less than or equal to 75s, c can be set to 75-pure rolling time, and the processing time of the slab to be processed = pure rolling time + c. Assuming that the strip thickness of the strip steel product is greater than 3mm and less than 13mm, and the pure rolling time is greater than 75s, d can be set to pure rolling time-75, and the processing time of the slab to be processed = pure rolling time + d, where a, b, c, and d are constants and can be modified.

[0054] It should be noted that the embodiment of the present invention can fit the pure rolling time calculation formula for different steel grades based on the historical stable production data. In the fitting process, effective influencing factors are selected, and abnormal influencing points on site need to be eliminated. The first level removes abnormal points, and records the swing time of the slab in each pass through the first level tracking, and removes abnormal points at the first level. At the same time, in the actual production process, due to the swing steel control rhythm, the second level records and modifies and optimizes the formula compensation value of the steel grade. Update the database and train regularly. Record the slab production rhythm and maintain it in a basic database. When the data volume is large enough, regularly train the basic formula and update the formula (time prediction model). The second-level model automatically updates the coefficients. Using the second-level model, the steel grade rhythm formula is issued to control the slab steelmaking rhythm.

[0055] The embodiment of the present invention obtains the production information of the hot rolling production line, the production information includes the specifications of the slab to be processed, the required strip steel specifications, the first target slab temperature at the outlet of the heating furnace, and the second target slab temperature at the outlet of the finishing mill; based on the production information, the processing time required for the slab to be processed is determined; based on the processing time of the slab to be processed, the hot rolling production line is controlled to process the slab to be processed to produce a strip steel product that meets the strip steel specifications. Determining the processing time of the slab to be processed based on the production information not only considers the actual product demand of the strip steel product, but also considers the actual specifications of the slab to be processed to determine the processing time of the slab to be processed, that is, determining the processing time of the slab to be processed according to the actual production situation, avoiding relying on manual experience to determine the processing time, and improving the control accuracy of the processing time. Therefore, the product performance stability of the strip steel is improved.

[0056] Based on the same inventive concept, Figure 3 As shown, an embodiment of the present invention provides a production control device 10 for a hot rolling production line, wherein the hot rolling production line includes a heating furnace and a finishing rolling unit, and the production control device 10 for the hot rolling production line includes: an information acquisition unit 110, used to acquire production information of the hot rolling production line, the production information includes specifications of the slab to be processed, required strip specifications, a first target slab temperature at the outlet of the heating furnace, and a second target slab temperature at the outlet of the finishing rolling unit; a time determination unit 120, used to determine the processing time required for the slab to be processed based on the production information; a processing control unit 130, used to control the hot rolling production line to process the slab to be processed based on the processing time of the slab to be processed, so as to produce a strip product that meets the strip specifications.

[0057] It can be understood that the hot rolling production line also includes a rough rolling mill and a coiler, and the time determination unit 120 includes: a first determination subunit, used to determine the heating time of the slab to be processed in the heating furnace based on the production information; a second determination subunit, used to determine the rough rolling time of the slab to be processed in the rough rolling mill based on the production information; a third determination subunit, used to determine the pure rolling time of the slab to be processed in the finishing mill based on the production information; a fourth determination subunit, used to determine the coiling time of the slab to be processed in the coiler based on the production information; and a fifth determination subunit, used to use the heating time, rough rolling time, pure rolling time and coiling time as the processing time of the slab to be processed.

[0058] The third determination subunit is specifically used to: input the production information into the preset time prediction model to obtain the pure rolling time of the slab to be processed in the finishing mill. The time prediction model is established by the following steps: obtaining the first historical strip steel production data, the first historical strip steel production data includes a plurality of production sub-data, each production sub-data includes the specification of the slab in the strip steel production process, the specification of the strip steel, the first target slab temperature at the outlet of the heating furnace, the second target slab temperature at the outlet of the finishing mill, and the pure rolling time of the slab in the finishing mill; fitting the first historical strip steel production data to obtain the time prediction model. The first historical strip steel production data is obtained, including: obtaining the second historical strip steel production data, the second historical strip steel production data includes a plurality of production sub-data, and the second historical strip steel production data is greater than the number of production sub-data of the first historical strip steel production data; eliminating the abnormal production sub-data in the second historical strip steel production data to obtain the first historical strip steel production data.

[0059] It can be understood that the strip steel specification includes the strip steel thickness of the strip steel product, and the fourth determination subunit is specifically used to: determine the coiling time of the slab to be processed on the coiler based on the strip steel thickness of the strip steel product. Wherein, based on the strip steel thickness of the strip steel product, determining the coiling time of the slab to be processed on the coiler includes: if the strip steel thickness of the strip steel product is within a preset first thickness range, using the preset first time as the coiling time of the slab to be processed on the coiler; if the strip steel thickness of the strip steel product is within a preset second thickness range, using the preset second time as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the second thickness range is greater than the upper limit value of the first thickness range, and the duration of the second time is greater than the first time; if the strip steel thickness of the strip steel product is within a preset third thickness range, using the preset third time as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the third thickness range is greater than the upper limit value of the second thickness range, and the duration of the third time is greater than the second time.

[0060] It can be understood that the processing control unit 130 is specifically used to: control the processing of the slab to be processed in the heating furnace according to the heating time of the slab to be processed in the heating furnace; control the processing of the slab to be processed in the roughing mill according to the rough rolling time of the slab to be processed in the roughing mill; control the processing of the slab to be processed in the finishing mill according to the pure rolling time of the slab to be processed in the finishing mill; control the processing of the slab to be processed in the coiler according to the coiling time of the slab to be processed in the coiler.

[0061] It should be understood that more implementation details of the production control device 10 for the hot rolling production line in the embodiment of the present invention refer to the production control method for the hot rolling production line described above, and for the sake of brevity of the specification, they will not be repeated here.

[0062] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, such as Figure 4 As shown, it includes a memory 404, a processor 402, and a computer program stored in the memory 404 and executable on the processor 402. The processor 402 executes the program to implement the steps described in any implementation of the production control method for a hot rolling production line.

[0063] Among them, Figure 4In the embodiment of the present invention, a bus architecture (represented by bus 400) is shown, which may include any number of interconnected buses and bridges, and bus 400 links various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 405 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 may be used to store data used by processor 402 when performing operations.

[0064] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.

[0065] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0066] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0067] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0068] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A production control method for a hot rolling production line, characterized in that: The hot rolling production line includes a heating furnace and a finishing mill, and the method includes: Acquire production information of the hot rolling production line, the production information including specifications of the slab to be processed, specifications of the required strip steel, a first target slab temperature at the outlet of the heating furnace, and a second target slab temperature at the outlet of the finishing mill; Determining the processing time required for the slab to be processed based on the production information; Based on the processing time of the slab to be processed, the hot rolling production line is controlled to process the slab to be processed to produce a strip steel product that meets the strip steel specifications.

2. The production control method of the hot rolling production line according to claim 1, characterized in that: The hot rolling production line further includes a rough rolling mill and a coiler. The step of determining the processing time required for the slab to be processed based on the production information includes: Based on the production information, determining a heating time of the slab to be processed in the heating furnace; Based on the production information, determining the rough rolling time of the slab to be processed in the rough rolling mill group; Based on the production information, determining the pure rolling time of the slab to be processed in the finishing mill group; Based on the production information, determining the coiling time of the slab to be processed on the coiler; The heating time, the rough rolling time, the pure rolling time and the coiling time are used as the processing time of the slab to be processed.

3. The production control method of the hot rolling production line according to claim 2, characterized in that: The determining, based on the production information, the pure rolling time of the slab to be processed in the finishing mill group comprises: The production information is input into a preset time prediction model to obtain the pure rolling time of the slab to be processed in the finishing mill group.

4. The production control method of the hot rolling production line according to claim 3, characterized in that: The time prediction model is established through the following steps: Acquire first historical strip steel production data, wherein the first historical strip steel production data includes a plurality of production sub-data, each of which includes the specification of the slab in the strip steel production process, the specification of the strip steel, the first target slab temperature at the outlet of the heating furnace, the second target slab temperature at the outlet of the finishing mill, and the pure rolling time of the slab in the finishing mill; The first historical strip steel production data is fitted to obtain the time prediction model.

5. The production control method of the hot rolling production line according to claim 4, characterized in that: The obtaining of the first historical strip steel production data comprises: Acquire second historical strip steel production data, where the second historical strip steel production data includes a plurality of the production sub-data, and the second historical strip steel production data is greater than the number of production sub-data of the first historical strip steel production data; Abnormal production sub-data in the second historical strip steel production data are eliminated to obtain the first historical strip steel production data.

6. The production control method of the hot rolling production line according to claim 2, characterized in that: The strip steel specification includes the strip steel thickness of the strip steel product, and determining the coiling time of the slab to be processed on the coiler based on the production information includes: The coiling time of the slab to be processed on the coiler is determined based on the strip thickness of the strip steel product.

7. The production control method of the hot rolling production line according to claim 6, characterized in that: The step of determining the coiling time of the slab to be processed on the coiler based on the strip thickness of the strip steel product comprises: If the strip thickness of the strip steel product is within a preset first thickness range, the preset first time is used as the coiling time of the slab to be processed on the coiler; If the strip thickness of the strip steel product is within a preset second thickness range, the preset second time is used as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the second thickness range is greater than the upper limit value of the first thickness range, and the duration of the second time is greater than the first time; If the strip thickness of the strip steel product is within a preset third thickness range, the preset third time is used as the coiling time of the slab to be processed on the coiler, wherein the lower limit value of the third thickness range is greater than the upper limit value of the second thickness range, and the duration of the third time is greater than the second time.

8. The production control method of the hot rolling production line according to claim 2, characterized in that: The step of controlling the hot rolling production line to process the slab to be processed based on the processing time of the slab to be processed comprises: Controlling the processing of the slab to be processed in the heating furnace according to the heating time of the slab to be processed in the heating furnace; Controlling the processing of the slab to be processed in the roughing mill group according to the roughing time of the slab to be processed in the roughing mill group; Controlling the processing of the slab to be processed in the finishing mill group according to the pure rolling time of the slab to be processed in the finishing mill group; According to the coiling time of the slab to be processed on the coiler, the processing of the slab to be processed on the coiler is controlled.

9. A production control device for a hot rolling production line, characterized in that: The hot rolling production line includes a heating furnace and a finishing mill, and the device includes: An information acquisition unit, used to acquire production information of the hot rolling production line, the production information including specifications of the slab to be processed, specifications of the required strip steel, a first target slab temperature at the outlet of the heating furnace, and a second target slab temperature at the outlet of the finishing mill; A time determination unit, used for determining the processing time required for the slab to be processed based on the production information; A processing control unit is used to control the hot rolling production line to process the slab to be processed based on the processing time of the slab to be processed, so as to produce a strip steel product that meets the strip steel specifications.

10. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 8 when executing the computer program.

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