A method, apparatus, medium, and electronic device for controlling cooling water volume.
By adjusting the cooling water volume of the finishing mill and roughing mill in the rolling production line, the problem of insufficient cooling of the rolls during the switch from headless mode to single-block mode was solved, thus achieving effective control of the single-slab shape and improving production stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHOUGANG JINGTANG IRON & STEEL CO LTD
- Filing Date
- 2025-02-21
- Publication Date
- 2026-05-26
AI Technical Summary
In the thin slab endless rolling production line, the rolls fail to cool sufficiently during the transition from endless mode to single-slab mode, leading to difficulties in controlling the shape of the single slab and affecting product quality and production stability.
By obtaining the cooling water volume of the finishing mill and roughing mill, and adjusting the cooling water volume according to the rolling pattern and operating speed, the duration of high cooling water volume is extended and the duration of low cooling water volume is shortened to ensure that the rolls are adequately cooled.
Effective control of single billet shape improves production stability, reduces plate shape defects, and saves energy.
Smart Images
Figure CN119819717B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rolling mill cooling technology, and in particular to a cooling water volume control method, device, medium, and electronic equipment. Background Technology
[0002] The main production mode of the thin slab endless rolling production line is the endless mode. After casting, the production mode is usually switched from the endless mode to the single-slab mode to produce 2-3 single slabs. On the one hand, the rolls accumulate too much thermal expansion during the endless mode production process. On the other hand, after the endless mode production is completed, in order to save energy, the cooling water volume of the rolls is reduced from the set water volume to the first no-load water volume. In order to ensure the stability of the strip threading during single-slab production, the cooling water volume of the rolls is increased to the set water volume after each stand has finished threading. That is, each stand cools the rolls according to the no-load water volume during the target time period, which is the time period between the steel throwing time in the endless mode and the steel biting time in the single-slab mode. During this process, the rolls are not sufficiently cooled, which is not conducive to controlling the shape of the single slab. On the other hand, the single slab production specifications are relatively thick, and the rolling force required during the rolling process is small. The rolls have insufficient deflection, which makes it difficult to control the crown during the single slab production process, and even negative crown phenomenon occurs, which seriously affects product quality and production stability. Summary of the Invention
[0003] The embodiments of this application provide a cooling water volume control method, device, medium, and electronic device to solve the technical problem that the rolls are not sufficiently cooled during the switching from headless mode to single-block mode, which is not conducive to controlling the shape of the single billet.
[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.
[0005] According to a first aspect of this application, a cooling water volume control method is provided, applied to an endless rolling mill production line, the endless rolling mill production line including a roughing mill unit and a finishing mill unit arranged sequentially in the slab running direction, the roughing mill unit including at least two roughing mills arranged sequentially in the slab running direction, the finishing mill unit including at least two finishing mills arranged sequentially in the slab running direction, the method comprising:
[0006] If the previous slab is in the headless mode and the current slab is in the single-block mode, then obtain the first cooling water volume of each finishing mill in the headless mode;
[0007] For each of the roughing mills, determine the current distance between the roughing mill and the finishing mill group;
[0008] The roughing mill with the smallest current distance is selected as the target roughing mill;
[0009] For each of the finishing mills, in response to the bite signal of the target roughing mill on the current slab, the first no-load water volume of the finishing mill is obtained, and the cooling water volume of the finishing mill is reduced from the first cooling water volume to the first no-load water volume. In response to the bite signal of the finishing mill on the current slab, the second cooling water volume of the finishing mill in the single-slab mode is obtained, and the cooling water volume of the finishing mill is increased from the first no-load water volume to the second cooling water volume.
[0010] In some embodiments of this application, based on the foregoing scheme, increasing the cooling water volume of the finishing mill from the first no-load water volume to the second cooling water volume includes:
[0011] Obtain the first running speed of the current slab;
[0012] The first water volume rise rate is determined based on the first operating speed, and the first water volume rise rate is positively correlated with the first operating speed.
[0013] The cooling water volume of the finishing mill is increased to the second cooling water volume according to the first water volume increase rate.
[0014] In some embodiments of this application, based on the foregoing scheme, obtaining the first cooling water volume of the finishing mill in the headless mode includes:
[0015] Obtain a first rolling model for the headless rolling mode, wherein the first rolling model characterizes the rolling conditions of the headless rolling production line in the headless rolling mode;
[0016] The first cooling water volume is determined based on the first rolling model.
[0017] In some embodiments of this application, based on the foregoing scheme, obtaining the second cooling water volume of the finishing mill in the single-block mode includes:
[0018] Obtain a second rolling model for the single-block mode, wherein the second rolling model characterizes the rolling conditions of the headless rolling production line in the single-block mode;
[0019] The second cooling water volume is determined based on the second rolling model.
[0020] In some embodiments of this application, based on the foregoing scheme, obtaining the first no-load water volume of the finishing mill includes:
[0021] Obtain the water quantity coefficient, wherein the water quantity coefficient is less than 1;
[0022] The first no-load water volume is obtained by weighting the first cooling water volume based on the water volume coefficient.
[0023] In some embodiments of this application, based on the foregoing scheme, after the previous slab is in a headless mode and the current slab is in a single-piece mode, the method further includes:
[0024] Obtain the third cooling water volume for each of the roughing mills in the headless mode;
[0025] For each roughing mill, in response to the roughing mill's rejection signal to the previous slab, a second no-load water volume of the roughing mill is obtained, and the cooling water volume of the roughing mill is reduced from the third cooling water volume to the second no-load water volume. In response to the roughing mill's bite signal to the current slab, a fourth cooling water volume of the roughing mill in the single-slab mode is obtained, and the cooling water volume of the roughing mill is increased from the second no-load water volume to the fourth cooling water volume.
[0026] In some embodiments of this application, based on the foregoing scheme, increasing the cooling water volume of the roughing mill from the second no-load water volume to the fourth cooling water volume includes:
[0027] Obtain the second running speed of the current slab;
[0028] The second water volume rise rate is determined based on the second operating speed, and the second water volume rise rate is positively correlated with the second operating speed.
[0029] According to the second water flow rate, the cooling water flow of the roughing mill is increased to the fourth cooling water flow rate.
[0030] According to a second aspect of this application, a cooling water volume control device is provided, applied to an endless rolling mill production line, the endless rolling mill production line including a roughing mill group and a finishing mill group arranged sequentially in the slab running direction, the roughing mill group including at least two roughing mills arranged sequentially in the slab running direction, the finishing mill group including at least two finishing mills arranged sequentially in the slab running direction, the device comprising:
[0031] The first acquisition unit acquires the first cooling water volume of each finishing mill in the headless mode if the previous slab is in the headless mode and the current slab is in the single-block mode.
[0032] The first determining unit determines the current distance between each roughing mill and the finishing mill group.
[0033] The first unit is to take the roughing mill with the smallest current distance as the target roughing mill;
[0034] The first water volume control unit, for each of the finishing mills, in response to the bite signal of the target roughing mill on the current slab, acquires the first no-load water volume of the finishing mill, reduces the cooling water volume of the finishing mill from the first cooling water volume to the first no-load water volume, and in response to the bite signal of the finishing mill on the current slab, acquires the second cooling water volume of the finishing mill in the single-slab mode, and increases the cooling water volume of the finishing mill from the first no-load water volume to the second cooling water volume.
[0035] According to a third aspect of this application, a computer-readable storage medium is provided having a computer program stored thereon, characterized in that the computer program includes executable instructions that, when executed by a processor, implement the method described in any embodiment of the first aspect of this application.
[0036] According to a fourth aspect of this application, an electronic device is provided, comprising: one or more processors; and a memory for storing executable instructions of the processors, which, when executed by the one or more processors, cause the one or more processors to implement the method described in any embodiment of the first aspect of this application.
[0037] The beneficial effects of this application are as follows:
[0038] During the time period between the roughing mill receiving the bite signal and the finishing mill receiving the bite signal, the finishing mill cools the rolls according to the no-load water volume (first no-load water volume). During other time periods, the rolls are cooled according to the set water volume (first cooling water volume or second cooling water volume). The time period of the finishing mill cooling the rolls according to the no-load water volume is shorter than the target time period in the prior art, and the duration of cooling the rolls according to the set water volume is longer than the duration in the prior art. By extending the duration of the high cooling water volume and shortening the duration of the low cooling water volume, the rolls are fully cooled, which is beneficial for controlling the shape of the single billet.
[0039] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:
[0041] Figure 1 A schematic diagram of a headless rolling production line is shown;
[0042] Figure 2 A schematic diagram showing the control of cooling water volume for each rack is provided.
[0043] Figure 3 A flowchart of a cooling water volume control method according to an embodiment of this application is shown;
[0044] Figure 4 A schematic diagram illustrating the control of cooling water volume in a finishing mill according to an embodiment of this application is shown;
[0045] Figure 5 A block diagram of a cooling water volume control device according to an embodiment of this application is shown;
[0046] Figure 6 A schematic diagram of a computer-readable storage medium in an embodiment of this application is shown;
[0047] Figure 7 A schematic diagram of the system structure of an electronic device in an embodiment of this application is shown. Detailed Implementation
[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, other embodiments of the plurality of burners obtained by those of ordinary skill in the art without creative effort are all within the scope of protection of this application.
[0049] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0050] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0051] The flowchart shown in the accompanying drawings is merely illustrative and does not necessarily include all the contents and operations / steps of the multiple burners, nor does it necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the actual situation.
[0052] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.
[0053] To better understand the embodiments of this application, Figure 1 A schematic diagram of a headless rolling mill production line is shown. Figure 2 A schematic diagram showing the control of cooling water volume for each rack is provided. Figure 1 In the diagram, 1 represents a thin slab casting machine, 2 a tunnel furnace, 3 a roughing mill, and 4 a finishing mill. (See also...) Figure 1 The following is a description of the headless rolling production line:
[0054] The endless rolling production line includes a thin slab casting machine 1, a tunnel furnace 2, a roughing mill 3, and a finishing mill 4 arranged sequentially in the slab running direction. The roughing mill 2 includes three roughing mills (H0, H1, and H2) arranged sequentially in the slab running direction, i.e., three roughing mills arranged from left to right. The finishing mill 4 includes five finishing mills (F1, F2, F3, F4, and F5) arranged sequentially in the slab running direction, i.e., five roughing mills arranged from left to right. Each roughing mill and each finishing mill is a stand. For any stand, when the endless steel ejection signal is received, the cooling water flow rate is reduced from the set water flow rate in the endless mode to the no-load water flow rate. When the single-piece bite signal is received, the cooling water flow rate is increased from the no-load water flow rate to the set water flow rate. The water flow rate in the cold zone during the steel tapping gap after the endless mode ends is relatively small, and the gap time is not used to fully cool the rolls, making subsequent single-piece shape control extremely difficult.
[0055] Figure 3 A flowchart of a cooling water volume control method according to an embodiment of this application is shown. See also: Figure 3A cooling water volume control method is provided, applied to an endless rolling production line. The endless rolling production line can be a multi-mode continuous casting & rolling plant (MCCR). The endless rolling production line includes a roughing mill and a finishing mill arranged sequentially in the slab running direction. The roughing mill includes at least two roughing mills arranged sequentially in the slab running direction, and the finishing mill includes at least two finishing mills arranged sequentially in the slab running direction. The method includes at least steps S1 to S4, detailed below:
[0056] In step S1, if the previous slab is in the headless mode and the current slab is in the single-block mode, then the first cooling water volume of each finishing mill in the headless mode is obtained.
[0057] For example, the previous slab is the Nth slab, and the current slab is the (N+1)th slab, where N is a positive integer.
[0058] It should be noted that "the previous slab is in the headless mode" indicates that the headless rolling production line uses the headless mode to produce the previous slab, and "the current slab is in the single-piece mode" indicates that the headless rolling production line uses the single-piece mode to produce the current slab. "The previous slab is in the headless mode and the current slab is in the single-piece mode" can be understood as the previous slab being the last slab in the headless mode and the current slab being the first slab in the single-piece mode. The first cooling water volume is the cooling water volume of the finishing mill when rolling the slab in the headless mode.
[0059] In some implementations, the automated Level 2 (L2) system determines the current slab and the previous slab. If the previous slab is the last one in the headless mode, the current slab is in the single-slab production mode. The roll cooling water function switches to a new control function and adopts a special cooling water mode, i.e., steps S2 to S4 are executed. In other cases, the roll cooling water function is in the normal cooling mode.
[0060] In step S2, for each roughing mill, the current distance between the roughing mill and the finishing mill group is determined. The current distance can be the distance between the roughing mill and the finishing mill group in the slab running direction.
[0061] For example, see Figure 2 The slab runs in the left-right direction, and the current distance is the distance between the roughing mill and the finishing mill in the left-right direction.
[0062] In step S3, the roughing mill with the smallest current distance is selected as the target roughing mill. The target roughing mill can be understood as the roughing mill at the exit of the roughing mill group, that is, the roughing mill closest to the finishing mill group.
[0063] For example, see Figure 2 The current distance is the largest for roughing mill H0, followed by roughing mill H1, and the smallest for roughing mill H2. The target roughing mill is H2.
[0064] In step S4, for each finishing mill, in response to the bite signal of the target roughing mill on the current slab, the first no-load water volume of the finishing mill is obtained, and the cooling water volume of the finishing mill is reduced from the first cooling water volume to the first no-load water volume. In response to the bite signal of the finishing mill on the current slab, the second cooling water volume of the finishing mill in the single-slab mode is obtained, and the cooling water volume of the finishing mill is increased from the first no-load water volume to the second cooling water volume.
[0065] In some implementations, the first cooling water volume is equal to the second cooling water volume.
[0066] In some implementations, the Level 1 Automation (L1) system executes steps S2 to S4, that is, if it is confirmed that a special cooling water mode is adopted, the Level 1 Automation (L1) system executes the control logic according to steps S2 to S4.
[0067] In this application, when the finishing mill receives a headless steel throwing signal (the finishing mill's steel throwing signal to the previous slab), the finishing mill maintains the first cooling water volume unchanged, instead of reducing it to the first no-load water volume. When the target roughing mill receives a single-slab bite signal (the finishing mill's bite signal to the current slab), the finishing mill reduces the cooling water volume from the first cooling water volume to the first no-load water volume. In a first time period, the finishing mill's cooling water volume is increased from the prior art no-load water volume (equivalent to the first no-load water volume of this application) to the first cooling water volume. By extending the time the finishing mill maintains a higher cooling water volume and reducing the time it maintains a lower cooling water volume, the cooling water volume is increased, which fully cools the finishing mill's rolls and facilitates control of the single slab shape. The first time period is the time period between receiving the finishing mill's headless steel throwing signal to the previous slab and receiving the target roughing mill's bite signal to the current slab. The single slab is a slab in single-slab operation mode, such as the current slab.
[0068] It should be noted that during the first time period, the cooling water volume of the finishing mill is the first cooling water volume, which can be understood as the same as the intermittent water volume and the setting during the headless mode, thereby minimizing the thermal expansion of the finishing mill rolls and significantly improving the strip crown control capability.
[0069] Figure 4 This application shows a schematic diagram of the control of the cooling water volume of the finishing mill in an embodiment of the present application. For example, see [link to relevant documentation]. Figure 4 Upon receiving the headless steel ejection signal from both the roughing mill H2 and the finishing mill F1, the cooling water volume of the finishing mill F1 remains at the first cooling water volume (the set water volume to the left of the no-load water volume L1). Upon receiving the steel bite signal from the roughing mill H2 on the current slab (single steel bite on the left), the cooling water volume of the finishing mill F1 decreases from the first cooling water volume to the first no-load water volume. Figure 4 When the idle water volume L1 in the mill receives a bite signal from the finishing mill F1 on the current slab (single slab bite on the right side), the cooling water volume of the finishing mill F1 increases from the first idle water volume to the second cooling water volume.
[0070] In some embodiments, increasing the cooling water volume of the finishing mill from the first no-load water volume to the second cooling water volume includes: obtaining the first operating speed of the current slab; determining a first water volume increase rate based on the first operating speed, wherein the first water volume increase rate is positively correlated with the first operating speed; and increasing the cooling water volume of the finishing mill to the second cooling water volume according to the first water volume increase rate.
[0071] In some implementations, the first operating speed is the operating speed at a first target time, which is the time when the bite signal of the finishing mill on the current slab is received.
[0072] In this application, the faster the first operating speed, the less cooling water is used for the rolls of the finishing mill per unit time. Therefore, a faster first water volume increase rate is required so that the cooling water volume of the finishing mill can be increased to the second cooling water volume as soon as possible to fully cool the rolls of the finishing mill.
[0073] In some embodiments, obtaining the first cooling water volume of the finishing mill in the endless mode includes: obtaining a first rolling model of the endless mode, the first rolling model representing the rolling conditions of the endless rolling production line in the endless mode; and determining the first cooling water volume based on the first rolling model.
[0074] It should be noted that the first rolling model is a finite element three-dimensional dynamic rolling model established based on the various process parameters of the rolling process collected at the production site when the headless rolling production line is in headless mode. The material properties, contact friction characteristics, and relative motion characteristics between the rolling mill pass and the billet are considered respectively. The influence of the billet unit mesh division rules on the rolling results is discussed and optimized in a reasonable manner, resulting in a three-dimensional dynamic simulation model that is more in line with the rolling conditions.
[0075] In some embodiments, obtaining the second cooling water volume of the finishing mill in the single-block mode includes: obtaining a second rolling model of the single-block mode, the second rolling model representing the rolling conditions of the headless rolling production line in the single-block mode; and determining the second cooling water volume based on the second rolling model.
[0076] It should be noted that the second rolling model is a finite element three-dimensional dynamic rolling model established based on the various process parameters of the rolling process collected at the production site when the headless rolling production line is in single-block production mode. The material properties, contact friction characteristics, and relative motion characteristics between the rolling mill pass and the billet are considered respectively. The influence of the billet unit mesh division rules on the rolling results is discussed and optimized in a reasonable manner, resulting in a three-dimensional dynamic simulation model that is more in line with the rolling conditions.
[0077] In some embodiments, obtaining the first no-load water volume of the finishing mill includes: obtaining a water volume coefficient, wherein the water volume coefficient is less than 1; and weighting the first cooling water volume based on the water volume coefficient to obtain the first no-load water volume. The water volume coefficient may be 0.7.
[0078] In some embodiments, after the previous slab is in the headless mode and the current slab is in the single-piece mode, the method further includes: obtaining a third cooling water volume for each of the roughing mills in the headless mode; for each of the roughing mills, in response to a steel-throwing signal from the roughing mill to the previous slab, obtaining a second no-load water volume for the roughing mill, reducing the cooling water volume of the roughing mill from the third cooling water volume to the second no-load water volume; and in response to a steel-biting signal from the roughing mill to the current slab, obtaining a fourth cooling water volume for the roughing mill in the single-piece mode, increasing the cooling water volume of the roughing mill from the second no-load water volume to the fourth cooling water volume.
[0079] In some embodiments, the third cooling water volume is equal to the fourth cooling water volume.
[0080] It should be noted that the roughing mill has a relatively small impact on the shape of the single billet, and the existing cooling method is maintained without increasing the cooling water volume in order to save energy. In contrast, the finishing mill has a relatively large impact on the shape of the single billet, and it is necessary to increase the cooling water volume to reduce the thermal expansion of the rolls and facilitate the control of the shape of the single billet. This achieves both efficient use of energy and convenient control of the shape of the single billet.
[0081] In some embodiments, increasing the cooling water volume of the roughing mill from the second no-load water volume to the fourth cooling water volume includes: obtaining the second operating speed of the current slab; determining a second water volume increase rate based on the second operating speed, wherein the second water volume increase rate is positively correlated with the second operating speed; and increasing the cooling water volume of the roughing mill to the fourth cooling water volume according to the second water volume increase rate.
[0082] In some embodiments, the second operating speed is the operating speed at a second target time, which is the time when the biting signal of the roughing mill to the current slab is received.
[0083] In this application, the faster the second operating speed, the less cooling water is used for the rolls of the roughing mill per unit time. Therefore, a faster second water volume increase rate is required so that the cooling water volume of the roughing mill can be increased to the fourth cooling water volume as soon as possible to fully cool the rolls of the roughing mill.
[0084] This application can be applied to the production of thin slab multi-mode production lines (multi-mode fully continuous casting and rolling production lines), improve the single-slab (single billet) shape control capability after mode switching (from headless mode to single-slab mode) during long roll period, reduce the occurrence of plate outline warping defects, help the production line reduce plate shape scrap, reduce costs and increase efficiency, and is also applicable to strip steel shape control in similar production lines.
[0085] In this application, during the time period between the roughing mill receiving the bite signal and the finishing mill receiving the bite signal, the finishing mill cools the rolls with an empty water volume (first empty water volume). During other time periods, the rolls are cooled with a set water volume (first cooling water volume or second cooling water volume). The time period during which the finishing mill cools the rolls with an empty water volume is shorter than the target time period in the prior art, and the duration of cooling the rolls with a set water volume is longer than the duration in the prior art. By extending the duration of high cooling water volume and shortening the duration of low cooling water volume, the cooling water volume is increased, and the rolls are fully cooled, which is beneficial for controlling the shape of the single billet.
[0086] According to a second aspect of this application, a cooling water volume control device 100 is provided, applied to an endless rolling production line, the endless rolling production line including a roughing mill and a finishing mill arranged sequentially in the slab running direction, the roughing mill including at least two roughing mills arranged sequentially in the slab running direction, the finishing mill including at least two finishing mills arranged sequentially in the slab running direction, the device comprising:
[0087] The first acquisition unit 101 acquires the first cooling water volume of each finishing mill in the headless mode if the previous slab is in the headless mode and the current slab is in the single block mode.
[0088] The first determining unit 102 determines the current distance between each roughing mill and the finishing mill group.
[0089] The first unit 103 designates the roughing mill with the smallest current distance as the target roughing mill;
[0090] The first water volume control unit 104, for each of the finishing mills, in response to the bite signal of the target roughing mill on the current slab, acquires the first no-load water volume of the finishing mill and reduces the cooling water volume of the finishing mill from the first cooling water volume to the first no-load water volume. In response to the bite signal of the finishing mill on the current slab, it acquires the second cooling water volume of the finishing mill in the single-slab mode and increases the cooling water volume of the finishing mill from the first no-load water volume to the second cooling water volume.
[0091] Based on the same inventive concept, as a third aspect, this application also provides a computer-readable storage medium storing a program product capable of implementing the vehicle location positioning method described above. In some possible embodiments, various aspects of this application can also be implemented as a program product including program code, which, when run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to the various exemplary embodiments of this application.
[0092] refer to Figure 6 As shown, a program product 200 for implementing the above-described method according to an embodiment of this application is described. It may employ a portable compact disc read-only memory (CD-ROM) and include program code, and can run on a terminal device, such as a personal computer. However, the program product of this application is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
[0093] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.
[0094] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.
[0095] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.
[0096] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages such as Java and C++, and conventional procedural programming languages such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).
[0097] In another respect, this application also provides an electronic device capable of implementing the above-described method.
[0098] Those skilled in the art will understand that various aspects of this application can be implemented as a system, method, or program product. Therefore, various aspects of this application can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software implementations, collectively referred to herein as a "circuit," "module," or "system."
[0099] The following reference Figure 7 To describe an electronic device 300 according to this embodiment of the present application. Figure 7 The electronic device 300 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.
[0100] like Figure 7As shown, the electronic device 300 is manifested in the form of a general-purpose computing device. The components of the electronic device 300 may include, but are not limited to: at least one processing unit 310, at least one storage unit 320, and a bus 330 connecting different system components (including storage unit 320 and processing unit 310).
[0101] The storage unit stores program code that can be executed by the processing unit 310, causing the processing unit 310 to perform the steps described in the "Embodiment Methods" section above according to various exemplary embodiments of this application.
[0102] Storage unit 320 may include readable media in the form of volatile storage units, such as random access memory (RAM) 321 and / or cache memory 322, and may further include read-only memory (ROM) 323.
[0103] Storage unit 320 may also include a program / utility 324 having a set (at least one) of program modules 325, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.
[0104] Bus 330 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.
[0105] Electronic device 300 can also communicate with one or more external devices 400 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with the electronic device 300, and / or with any device that enables the electronic device 300 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 350. Furthermore, electronic device 300 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 360. Figure 7 As shown, network adapter 360 communicates with other modules of electronic device 300 via bus 330. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.
[0106] 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 or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this application 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, hardwired, or any combination thereof. Furthermore, the functional units may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit.
[0107] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.
[0108] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.
[0109] If the integrated unit is implemented as 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 this application, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.
[0110] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A cooling water amount control method characterized by, An application to a headless rolling mill production line, the headless rolling mill line comprising a roughing mill unit and a finishing mill unit arranged sequentially in the slab running direction, the roughing mill unit comprising at least two roughing mills arranged sequentially in the slab running direction, the finishing mill unit comprising at least two finishing mills arranged sequentially in the slab running direction, the method comprising: If the previous slab is in the headless mode and the current slab is in the single-block mode, then obtain the first cooling water volume of each finishing mill in the headless mode; For each of the roughing mills, determine the current distance between the roughing mill and the finishing mill group; The roughing mill with the smallest current distance is selected as the target roughing mill; For each of the finishing mills, in response to the bite signal of the target roughing mill on the current slab, the first no-load water volume of the finishing mill is obtained, and the cooling water volume of the finishing mill is reduced from the first cooling water volume to the first no-load water volume. In response to the bite signal of the finishing mill on the current slab, the second cooling water volume of the finishing mill in the single-slab mode is obtained, and the cooling water volume of the finishing mill is increased from the first no-load water volume to the second cooling water volume.
2. The cooling water quantity control method according to claim 1, characterized by, The step of increasing the cooling water volume of the finishing mill from the first no-load water volume to the second cooling water volume includes: The first running speed of the current slab is obtained, the first running speed is the running speed at a first target time, and the first target time is the time when the bite signal of the finishing mill to the current slab is received; The first water volume rise rate is determined based on the first operating speed, and the first water volume rise rate is positively correlated with the first operating speed. The cooling water volume of the finishing mill is increased to the second cooling water volume according to the first water volume increase rate.
3. The cooling water quantity control method according to claim 1, characterized by, The process of obtaining the first cooling water volume of the finishing mill in the headless mode includes: Obtain a first rolling model for the headless rolling mode, wherein the first rolling model characterizes the rolling conditions of the headless rolling production line in the headless rolling mode; The first cooling water volume is determined based on the first rolling model.
4. The cooling water quantity control method according to claim 1, characterized by, The process of obtaining the second cooling water volume of the finishing mill in the single-block mode includes: Obtain a second rolling model for the single-block mode, wherein the second rolling model characterizes the rolling conditions of the headless rolling production line in the single-block mode; The second cooling water volume is determined based on the second rolling model.
5. The cooling water quantity control method according to claim 1, characterized by, The step of obtaining the first empty water volume of the finishing mill includes: Obtain the water quantity coefficient, wherein the water quantity coefficient is less than 1; The first no-load water volume is obtained by weighting the first cooling water volume based on the water volume coefficient.
6. The cooling water quantity control method according to claim 1, characterized by, After the previous slab is in a headless mode and the current slab is in a single-piece mode, the method further includes: Obtain the third cooling water volume for each of the roughing mills in the headless mode; For each roughing mill, in response to the roughing mill's rejection signal to the previous slab, a second no-load water volume of the roughing mill is obtained, and the cooling water volume of the roughing mill is reduced from the third cooling water volume to the second no-load water volume. In response to the roughing mill's bite signal to the current slab, a fourth cooling water volume of the roughing mill in the single-slab mode is obtained, and the cooling water volume of the roughing mill is increased from the second no-load water volume to the fourth cooling water volume.
7. The cooling water quantity control method according to claim 6, characterized by, The step of increasing the cooling water volume of the roughing mill from the second no-load water volume to the fourth cooling water volume includes: The second running speed of the current slab is obtained, the second running speed is the running speed at a second target time, and the second target time is the time when the bite signal of the roughing mill to the current slab is received; The second water volume rise rate is determined based on the second operating speed, and the second water volume rise rate is positively correlated with the second operating speed. According to the second water flow rate, the cooling water flow of the roughing mill is increased to the fourth cooling water flow rate.
8. A cooling water amount control device characterized by comprising: An apparatus for use in a headless rolling mill production line, the headless rolling mill comprising a roughing mill and a finishing mill arranged sequentially in the slab running direction, the roughing mill comprising at least two roughing mills arranged sequentially in the slab running direction, and the finishing mill comprising at least two finishing mills arranged sequentially in the slab running direction, the apparatus comprising: The first acquisition unit acquires the first cooling water volume of each finishing mill in the headless mode if the previous slab is in the headless mode and the current slab is in the single-block mode. The first determining unit determines the current distance between each roughing mill and the finishing mill group. The first unit is to take the roughing mill with the smallest current distance as the target roughing mill; The first water volume control unit, for each of the finishing mills, in response to the bite signal of the target roughing mill on the current slab, acquires the first no-load water volume of the finishing mill, reduces the cooling water volume of the finishing mill from the first cooling water volume to the first no-load water volume, and in response to the bite signal of the finishing mill on the current slab, acquires the second cooling water volume of the finishing mill in the single-slab mode, and increases the cooling water volume of the finishing mill from the first no-load water volume to the second cooling water volume.
9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program includes executable instructions that, when executed by a processor, implement the method of any one of claims 1-7.
10. An electronic device, comprising: include: One or more processors; A memory for storing executable instructions of the processor, which, when executed by the one or more processors, cause the one or more processors to perform the method according to any one of claims 1-7.