A method for dynamically adjusting the furnace temperature required for heating blanks

Abstract

The present invention discloses a method for dynamically adjusting the furnace temperature required for heating a billet, and belongs to the field of intelligent control technology of hot rolling heating furnaces in the metallurgical industry. The method for dynamically adjusting the furnace temperature required for heating a billet comprises: calculating the remaining heating time of the billet, and predicting the billet temperature at the end of heating; calculating the deviation between the predicted billet temperature and the target temperature on the standard heating curve; obtaining the adjustment value of the heating rate based on the deviation and the remaining heating time; calculating the furnace temperature correction value based on the adjustment value of the heating rate, in combination with the property parameters of the billet and the current furnace temperature, and superimposing the furnace temperature correction value on the current furnace temperature to obtain the furnace temperature required for heating the billet. The present invention can effectively improve the control accuracy of the out-of-furnace material temperature, not only improves the temperature control accuracy of the billet in the heating furnace, but also effectively reduces the energy consumption cost, and improves the production efficiency and product quality.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent control of hot rolling heating furnaces in the metallurgical industry, and in particular to a method for dynamically adjusting the furnace temperature required for heating a blank. Background Art

[0002] In the field of intelligent combustion and automatic control of hot rolling heating furnaces, setting the furnace temperature is the core process parameter, which not only directly affects the heating quality and output of the billet, but is also closely related to the energy consumption level of the heating furnace.

[0003] Since the heating furnace is a continuous production, different billets have different specifications and thicknesses, furnace entry temperatures, target temperatures, furnace time, and production rhythms. It is difficult for operators and engineers to accurately determine the most reasonable furnace temperature when determining the furnace combustion temperature. It is easy to set the furnace temperature too high or too low, causing the temperature of the material out of the furnace to deviate from the process target control value. This is a core and key technical issue in the field of intelligent production control of heating furnaces.

[0004] At present, in production, the furnace temperature setting and adjustment of the heating furnace mainly rely on manual experience. The process personnel formulate the standard heating temperature and adjustment range of each section of the steel type according to the steel type and billet specifications and thickness. Then, on this basis, the operator relies on personal experience and the measured feedback value of the rolling temperature. According to factors such as the billet's furnace temperature and production rhythm, within the range specified by the process, the upper limit, lower limit or standard value is flexibly selected for control. However, this method is limited by the workers' knowledge level, technical ability, sense of responsibility and diligence. The accuracy and timeliness of the set value cannot be guaranteed, resulting in different heating levels of different teams and workers, affecting the heating quality control and energy consumption level of the product.

[0005] At present, some advanced heating furnaces are equipped with heating furnace mathematical models, which can calculate and predict the temperature of the billet in the furnace in real time, and provide theoretical and data basis for adjusting the process furnace temperature. However, due to the lack of maturity of technology development, the furnace temperature setting based on the model is often only suitable for working conditions where the steel type and specification do not change much and the steel-making rhythm is basically stable (such as wire rods, bars, etc.). For coil and medium and thick plate production lines with more working conditions such as changing steel type, changing specifications, changing rhythm, and mixing hot and cold, the furnace temperature automatically set by the model is inaccurate and cannot be used in industry, and needs to be set manually. Summary of the invention

[0006] The present invention provides a method for dynamically adjusting the furnace temperature required for heating a blank, so as to solve the technical problem that the prior art cannot realize dynamic and accurate setting of the furnace temperature, thus affecting the heating quality control and energy consumption level of the product.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] In one aspect, the present invention provides a method for dynamically adjusting the furnace temperature required for heating a blank, comprising:

[0009] Calculate the remaining heating time of the billet and predict the billet temperature at the end of heating;

[0010] Calculate the deviation between the predicted billet temperature and the target temperature on the standard heating curve;

[0011] Based on the deviation and the remaining heating time, obtaining an adjustment value of the heating rate;

[0012] Based on the adjustment value of the heating rate, combined with the property parameters of the blank and the current furnace temperature, a furnace temperature correction value is calculated, and the furnace temperature correction value is added to the current furnace temperature to obtain the furnace temperature required for heating the blank.

[0013] Further, the calculating the remaining heating time of the blank comprises:

[0014] For a periodic heating furnace, the remaining heating time τ of the blank within a certain specified heating period is Next It is expressed as:

[0015] τ Next =T τ -τ Heat

[0016] Among them, T τ Indicates the total heating time of the current specified heating period; τ Heat Indicates the heating time.

[0017] Further, the calculating the remaining heating time of the blank comprises:

[0018] For a continuous heating furnace, within a certain specified heating section, the remaining heating time τ of the blank is Next It is expressed as:

[0019] τ Next =∑τ j or

[0020] Among them, τ j is the time interval of the jth billet before the current billet being discharged from the furnace; L represents the position of the current billet from the end of the current heating section; dtime represents the rhythm of steel discharge; Δτ represents the time elapsed from the current time to the last time of steel discharge; dx represents the average position interval of each piece of steel.

[0021] Further, predicting the blank temperature at the end of heating includes:

[0022] The billet temperature at the end of heating is calculated using a heating furnace mathematical model, a data analysis model or an empirical formula.

[0023] Furthermore, the target temperature is determined by an expert knowledge base.

[0024] Furthermore, the calculation formula of the adjustment value of the heating rate is:

[0025]

[0026] Where, dV represents the adjustment value of the heating rate; T m Indicates the target temperature on the standard heating curve; T s Represents the predicted billet temperature; τ Next Indicates the remaining heating time.

[0027] Furthermore, the property parameters of the blank include: blank heating coefficient, comprehensive radiation heat transfer coefficient of the blank in the furnace, blank density, blank specific heat and blank thickness.

[0028] Furthermore, the calculation formula of the furnace temperature correction value is:

[0029]

[0030] Wherein, dTf is the furnace temperature correction value; ρ is the billet density; C is the billet specific heat; H is the billet thickness; dV is the adjustment value of the heating rate; k is the billet heating coefficient; e is the comprehensive radiation heat transfer coefficient of the billet in the furnace; T f Indicates the current furnace temperature.

[0031] On the other hand, the present invention further provides an electronic device, comprising a processor and a memory; wherein the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the above method.

[0032] In yet another aspect, the present invention further provides a computer-readable storage medium, wherein at least one instruction is stored in the storage medium, and the instruction is loaded and executed by a processor to implement the above method.

[0033] The technical solution provided by the present invention is used to determine the furnace temperature setting value of the blank in each section of the heating furnace, ensuring that the blank is accurately heated and discharged from the furnace according to the specified process curve in each heating section, thereby improving the control accuracy of the discharge temperature of the blank and reducing energy consumption. The beneficial effects brought by the technical solution include at least:

[0034] 1. The technical solution provided by the present invention obtains the required furnace temperature value by calculating the correction value of the furnace temperature, which essentially has the advantages of smooth change and small fluctuation.

[0035] 2. One of the keys to the technical solution provided by the present invention is to obtain the predicted value and target value data of the steel temperature at the end of the heating period or the end of the heating section. Technically, it can be obtained through mature mathematical models, standard heating curves (or manual experience, process specification data tables and other expert experience knowledge bases). Therefore, it has the advantages of strong feasibility, low implementation difficulty, small investment and quick results.

[0036] 3. The control furnace temperature of the blank in the furnace can be accurately set by theoretical calculation method, and the heating curve of the blank in the furnace can be corrected in real time, which effectively improves the control accuracy of the blank temperature and the heating quality of the product.

[0037] 4. The technical solution provided by the present invention can realize the automatic adaptation of billet heating to the production rhythm and burner combustion control accuracy, automatically adjust the furnace temperature dynamically, heat the billet to near the target value on time and accurately, fundamentally avoid ineffective heating, save energy, reduce costs, and improve production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 is a flow chart of a method for dynamically adjusting the furnace temperature required for heating a blank provided by an embodiment of the present invention;

[0040] Figure 2 It is a system block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] First of all, it should be noted that in the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplarily" is intended to present the concept in a concrete way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0043] First embodiment

[0044] This embodiment provides a method for dynamically adjusting the furnace temperature required for heating a blank. The method can be implemented by an electronic device, which can be a terminal or a server. The execution process of the method includes the following steps:

[0045] S1, calculate the remaining heating time of the blank and predict the blank temperature at the end of heating;

[0046] Among them, the calculation process of the remaining heating time of the blank in the specified heating period (or heating section) is as follows:

[0047] For a periodic heating furnace, within a specified heating period, the total time of the heating period is specified as T τ , the heating time is τ Heat , then the remaining time τ Next for:

[0048] τ Next =T τ -τ Heat

[0049] For a continuous heating furnace, within a certain specified heating section, the remaining heating time τ of the blank is Next It is expressed as:

[0050] τ Next =∑τ j or

[0051] Among them, τ j is the time interval of the jth billet before the current billet being discharged from the furnace; L represents the position of the current billet from the end of the current heating section; dtime represents the rhythm of steel discharge; Δτ represents the time elapsed from the current time to the last time of steel discharge; dx represents the average position interval of each piece of steel.

[0052] After calculating the remaining heating time of the billet, the temperature of the billet at the end of the heating period (or heating section) is predicted using existing heating furnace mathematical models, data analysis models, empirical formulas, etc., thereby calculating the billet temperature at the current set furnace temperature T f Under the environment, after the remaining time τ Next The final billet temperature T s .

[0053] S2, calculating the deviation between the predicted billet temperature and the target temperature on the standard heating curve;

[0054] It should be noted that the target temperature T of the blank at the end of the heating period is m It is determined by setting standard heating curve, manual experience, process specification table and other expert knowledge base methods.

[0055] S3, obtaining an adjustment value of the heating rate based on the deviation and the remaining heating time;

[0056] The calculation formula of the adjustment value of the heating rate adjustment value is:

[0057]

[0058] Where, dV represents the adjustment value of the heating rate; T m Indicates the target temperature on the standard heating curve; T s Represents the predicted billet temperature; τ Next Indicates the remaining time of the blank in the specified heating period (or heating section).

[0059] S4, calculating a furnace temperature correction value based on the adjustment value of the heating rate, in combination with the property parameters of the blank and the current furnace temperature, and adding the furnace temperature correction value to the current furnace temperature to obtain the furnace temperature required for heating the blank;

[0060] The property parameters of the blank include: blank heating coefficient, comprehensive radiation heat transfer coefficient of the blank in the furnace, blank density, blank specific heat and blank thickness;

[0061] The furnace temperature correction value is calculated using a specific heat transfer calculation model, and the calculation formula is:

[0062]

[0063] Wherein, dTf is the furnace temperature correction value; ρ is the billet density; C is the billet specific heat; H is the billet thickness; dV is the adjustment value of the heating rate; k is the billet single-side / double-side heating coefficient; e is the comprehensive radiation heat transfer coefficient of the billet in the furnace; T f Indicates the current furnace temperature (absolute temperature of the furnace).

[0064] The final furnace temperature requirement value T set =T set =T f +dTf.

[0065] In summary, this embodiment provides a method for dynamically adjusting the furnace temperature required for heating the blank. The method can accurately set the control furnace temperature of the blank in the furnace through a theoretical calculation method, and correct the blank in real time to heat along the set heating curve, thereby realizing dynamic adjustment of the furnace temperature, heating the blank accurately to the vicinity of the target control value on time, and realizing the automatic adaptation of the blank heating to the production rhythm and the burner combustion control accuracy, effectively improving the control accuracy of the out-of-furnace material temperature, not only improving the temperature control accuracy of the blank in the heating furnace, but also fundamentally reducing ineffective heating and waste, effectively reducing energy consumption costs, and improving production efficiency and product quality. The method can be used for the setting and adjustment of the furnace temperature of a certain heating section of a continuous heating furnace (such as a step-by-step, push-steel, rotary bottom, roller bottom, etc.), and can also be used for the setting and adjustment of the furnace temperature of a certain process interval of a periodic heating furnace (such as a chamber furnace, a trolley furnace), which can effectively improve the material out-of-furnace temperature hit rate and reduce energy consumption.

[0066] Second embodiment

[0067] This embodiment takes the calculation of the required furnace temperature of a billet in a heating section of a hot rolling heating furnace as an example to illustrate the implementation effect of the technical solution of the present invention. The dynamic adjustment process of the required furnace temperature is as follows: Figure 1 shown.

[0068] Specifically, the dynamic adjustment of the required furnace temperature includes the following steps:

[0069] (1) The position of the billet is obtained from the material tracking system of the heating furnace, which shows that the billet is in the second heating stage and is 6.5 meters away from the end of the stage. At this time, the material layout of the heating furnace is single-row, the steel tapping rhythm dtime is 8 minutes / piece, the current time Δτ from the last steel tapping is 2.0 minutes, and the average position interval dx of each piece of steel is 2.6 meters. Therefore, the remaining time τ for the billet to reach the end of the stage is predicted. Next for:

[0070]

[0071] (2) Predict the temperature T of the billet at the end of the heating furnace through the mathematical model of the heating furnace. s The temperature T required for the product to reach the end of the second heating stage is obtained by querying the standard process curve. m It is 1150 degrees.

[0072] (3) The remaining time τ to reach the end of the segment calculated according to step (1) Next and the predicted temperature value T obtained at the end of the segment in step (2) s With the target value T m , and obtain the heating rate correction value dV:

[0073]

[0074] (4) The current billet is plain carbon steel Q235B, thickness 220mm, density 7840Kg / M 3 , specific heat 465J / Kg / ℃, the heating furnace is a walking beam heating furnace, with upper and lower heating, single-sided / double-sided heating coefficient k is 1.8, the comprehensive radiation coefficient e of the furnace at the location is 0.98, and the current heating section furnace temperature control value T f It is 1260 degrees (1553K).

[0075] (5) The temperature rise rate correction value dV calculated in step (3) and the relevant calculation parameters in step (4) are incorporated into a specific calculation model for calculation to obtain a furnace temperature correction value dTf:

[0076]

[0077] (6) The furnace temperature correction value dTf calculated according to step (5) and the current heating section furnace temperature control value T f , and the adjusted furnace temperature requirement is:

[0078] T set =T f +dTf=1260+10.3=1270.3℃

[0079] Through the above steps, dynamic adjustment of the furnace temperature can be achieved, and the billet can be accurately heated to the vicinity of the target control value on time, so as to achieve the purpose of automatic adaptation of billet heating to the production rhythm and burner combustion control accuracy, and effectively improve the control accuracy of the out-of-furnace material temperature. It not only improves the temperature control accuracy of the billet in the heating furnace, but also fundamentally reduces ineffective heating and waste, effectively reduces energy consumption costs, and improves production efficiency and product quality.

[0080] Third embodiment

[0081] This embodiment provides an electronic device, such as Figure 2 As shown, the electronic device includes: a processor and a memory; wherein the processor and the memory can be connected via a communication bus; the memory stores at least one instruction, and the instruction is loaded and executed by the processor to implement the method of the first embodiment. In addition, the electronic device may also include a transceiver, the processor and the transceiver can be connected via a communication bus, and the transceiver is used to communicate with other devices.

[0082] Next, combine Figure 2 The following is a detailed introduction to the various components of the electronic device:

[0083] Among them, the processor is the control center of the electronic device, and the electronic device may include multiple processors, each of which may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor here may be a processor or a general term for multiple processing elements. For example, the processor is one or more central processing units (CPUs), or other general-purpose processors, application specific integrated circuits (ASICs), or one or more integrated circuits configured to implement an embodiment of the present invention, such as one or more microprocessors (digital signal processors, DSPs), or one or more field programmable gate arrays (field programmable gate arrays, FPGAs), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor may execute various functions of the electronic device by running or executing software programs stored in the memory and calling data stored in the memory.

[0084] In a specific implementation, as an embodiment, the processor may include one or more CPUs, such as Figure 2 The CPU0 and CPU1 shown in the figure are, of course, only exemplary.

[0085] The memory is used to store the software program for executing the solution of the present invention, and the execution is controlled by the processor. The specific implementation method can refer to the above method embodiment and will not be repeated here.

[0086] Optionally, the memory may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be integrated with the processor or exist independently and accessed through the interface circuit ( Figure 2 (not shown) is coupled to the processor, which is not specifically limited in this embodiment of the present invention.

[0087] The transceiver may include a receiver and a transmitter ( Figure 2 The receiver is used to implement the receiving function, and the transmitter is used to implement the sending function. The transceiver can be integrated with the processor or exist independently and communicate with the electronic device through the interface circuit ( Figure 2 (not shown) is coupled to the processor, which is not specifically limited in this embodiment of the present invention.

[0088] In addition, it should be noted that Figure 2 The structure of the electronic device shown in the figure does not constitute a limitation on the device, and the actual device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. In addition, the technical effects achieved by the electronic device when executing the method of the first embodiment above can refer to the technical effects described in the first embodiment above, so they are not repeated here.

[0089] Fourth embodiment

[0090] This embodiment provides a computer-readable storage medium, which stores at least one instruction, and the instruction is loaded and executed by a processor to implement the method of the first embodiment. The computer-readable storage medium may be a ROM, a random access memory, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc. The instructions stored therein may be loaded by a processor in a terminal to execute the method.

[0091] In addition, it should be noted that the present invention can be provided as a method, an apparatus or a computer program product. Therefore, the embodiment of the present invention can be in the form of a full or partial hardware embodiment, a full or partial software embodiment or an embodiment combining software and hardware. Moreover, when implemented using software, the embodiment of the present invention can be in the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program codes. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center containing one or more available media sets. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium. The semiconductor medium may be a solid state hard disk.

[0092] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0093] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable terminal device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0094] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements. In addition, the term "and / or" is only an association relationship describing the associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone, wherein A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding. "At least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can be represented by: a, b, c, ab, ac, bc or abc, where a, b, c can be single or plural.

[0095] In addition, it can be understood that in various embodiments of the present invention, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0096] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0097] In several embodiments provided by the present invention, it should be understood that the disclosed equipment, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of functional modules / units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0098] If the method 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, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or 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 various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0099] Finally, it should be noted that the above is only a preferred embodiment of the present invention. It should be pointed out that although the preferred embodiment of the present invention has been described, for ordinary technicians in this technical field, once the basic creative concept of the present invention is known, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. Therefore, the attached claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the embodiments of the present invention.

Claims

1. A method for dynamically adjusting the furnace temperature required for heating a blank, characterized in that: include: Calculate the remaining heating time of the billet and predict the billet temperature at the end of heating; Calculate the deviation between the predicted billet temperature and the target temperature on the standard heating curve; Based on the deviation and the remaining heating time, obtaining an adjustment value of the heating rate; Based on the adjustment value of the heating rate, combined with the property parameters of the blank and the current furnace temperature, a furnace temperature correction value is calculated, and the furnace temperature correction value is added to the current furnace temperature to obtain the furnace temperature required for heating the blank.

2. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 1, characterized in that: The method of calculating the remaining heating time of the blank comprises: For a periodic heating furnace, the remaining heating time τ of the blank within a certain specified heating period is Next It is expressed as: t Next =T τ -t Heat Among them, T τ Indicates the total heating time of the current specified heating period; τ Heat Indicates the heating time.

3. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 1, characterized in that: The method of calculating the remaining heating time of the blank comprises: For a continuous heating furnace, within a certain specified heating section, the remaining heating time τ of the blank is Next It is expressed as: τ Next =∑τ j or Among them, τ j is the time interval of the jth billet before the current billet being discharged from the furnace; L represents the position of the current billet from the end of the current heating section; dtime represents the rhythm of steel discharge; Δτ represents the time elapsed from the current time to the last time of steel discharge; dx represents the average position interval of each piece of steel.

4. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 1, characterized in that: The method of predicting the blank temperature at the end of heating includes: The billet temperature at the end of heating is calculated using a heating furnace mathematical model, a data analysis model or an empirical formula.

5. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 1, characterized in that: The target temperature is determined by an expert knowledge base.

6. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 1, characterized in that: The calculation formula of the adjustment value of the heating rate is: Where, dV represents the adjustment value of the heating rate; T m Indicates the target temperature on the standard heating curve; T s Represents the predicted billet temperature; τ Next Indicates the remaining heating time.

7. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 1, characterized in that: The property parameters of the blank include: blank heating coefficient, comprehensive radiation heat transfer coefficient of the blank in the furnace, blank density, blank specific heat and blank thickness.

8. The method for dynamically adjusting the furnace temperature required for heating a blank according to claim 7, characterized in that: The calculation formula of the furnace temperature correction value is: Wherein, dTf is the furnace temperature correction value; ρ is the billet density; C is the billet specific heat; H is the billet thickness; dV is the adjustment value of the heating rate; k is the billet heating coefficient; e is the comprehensive radiation heat transfer coefficient of the billet in the furnace; T f Indicates the current furnace temperature.

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