Speed compensation method in hot continuous rolling lubricated rolling

Abstract

The application discloses a speed compensation method under hot continuous rolling lubrication rolling, and belongs to the technical field of metallurgical automation control, and the method comprises the following steps: determining a rack for lubrication rolling, and marking the rack as a current rack; marking a neighboring rack in front of the current rack as a previous rack, and marking a neighboring rack behind the current rack as a next rack; determining rolling process parameters of the lubrication rolling, and starting and stopping time of the lubrication rolling; based on the rolling process parameters, the speed compensation amount of the previous rack and the next rack is calculated respectively; after the lubrication rolling is started, the speed compensation of the previous rack and the next rack is carried out respectively; after the lubrication rolling is stopped, the speed compensation of the previous rack and the next rack is cancelled. The application solves the problems of width narrowing, thickness fluctuation and unstable rolling caused by the lubrication rolling in the hot continuous rolling, and has a positive significance for improving the rolling stability and improving the quality of the strip steel.

Description

Technical Field

[0001] This invention relates to the field of metallurgical automation control technology, and in particular to a speed compensation method for hot continuous rolling with lubrication. Background Technology

[0002] In the field of plate rolling, in recent years, the use of lubricated rolling in hot continuous rolling has reduced energy consumption and improved the surface quality of strip steel. However, the use of lubricated rolling, during the rolling process, and at the stop, reduces the friction between the rolls and the strip steel and changes the flow rate between stands, which has a certain impact on rolling stability and the quality of finished strip steel. Therefore, this study analyzes and calculates data such as the amount of lubricated oil used and the looper angle in hot continuous rolling to obtain corresponding stand speed compensation. This is of positive significance for solving the rolling instability and strip steel quality problems caused by lubricated rolling.

[0003] Currently, there is no existing technology that can achieve speed compensation in hot continuous rolling applications with lubrication to solve problems such as rolling stability and strip quality during lubrication rolling. Summary of the Invention

[0004] This invention provides a speed compensation method for hot continuous rolling with lubrication to solve the technical problem of the impact of lubrication rolling on rolling stability and strip quality after it is put into use in hot continuous rolling.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] On one hand, the present invention provides a speed compensation method under hot continuous rolling with lubrication, comprising:

[0007] Identify the stand to be used for lubrication rolling and designate it as the current stand; and according to the rolling sequence, designate the adjacent stand before the current stand as the previous stand and the adjacent stand after the current stand as the next stand.

[0008] Determine the rolling process parameters for lubricated rolling, as well as the start and stop times for lubricated rolling;

[0009] Based on the rolling process parameters of lubricated rolling, the speed compensation amount of the front stand and the back stand is calculated respectively.

[0010] After the lubrication rolling starts, the speed compensation of the previous stand is performed based on the real-time calculation of the speed compensation amount of the previous stand, and the speed compensation of the next stand is performed based on the real-time calculation of the speed compensation amount of the next stand.

[0011] After lubrication rolling stops, the speed compensation for the previous and next stands is cancelled.

[0012] Furthermore, the rolling process parameters for lubrication rolling include: the real-time oil quantity for lubrication rolling of the current stand, the upper limit of the oil quantity for lubrication rolling of the current stand, the lower limit of the oil quantity for lubrication rolling of the current stand, the actual angle of the front looper of the current stand, the set angle of the front looper of the current stand, the actual angle of the rear looper of the current stand, and the set angle of the rear looper of the current stand.

[0013] Furthermore, the formula for calculating the speed compensation of the preceding frame is:

[0014]

[0015] Among them, V cf Indicates the speed compensation amount of the previous rack; O lu This indicates the real-time oil level for lubrication during the current stand rolling process; O lumax Indicates the maximum amount of lubricating rolling oil in the current stand; O lumin This indicates the lower limit of the current stand lubrication oil level; k luf L represents the lubrication rolling compensation coefficient of the previous stand; af Indicates the actual angle of the front looper of the current rack; L saf Indicates the current setting angle of the front looper of the rack; k lpf Indicates the current frame front looper angle compensation coefficient; T A To control the cycle.

[0016] Furthermore, k luf The value range of k is 0 to 0.25; lpf The value range of T is 0 to 0.5; A The value range is 1ms to 32ms.

[0017] Furthermore, the formula for calculating the speed compensation of the subsequent frame is as follows:

[0018]

[0019] Among them, V cb Indicates the speed compensation amount for the next rack; O lu This indicates the real-time oil level for lubrication during the current stand rolling process; O lumax Indicates the maximum amount of lubricating rolling oil in the current stand; O lumin This indicates the lower limit of the current stand lubrication oil level; k lub L represents the lubrication rolling compensation coefficient for the next stand; ab Indicates the actual angle of the rear looper of the current rack; L sab Indicates the current rack rear loop setting angle; k lpb Indicates the current rack rear looper angle compensation coefficient; T A Indicates the control cycle.

[0020] Furthermore, k lubThe value range of k is 0 to 0.25; lpb The value range of T is 0 to 0.5; A The value range is 1ms to 32ms.

[0021] Furthermore, after the lubrication rolling process begins, speed compensation is performed on the previous stand based on the real-time calculated speed compensation amount, and speed compensation is performed on the subsequent stand based on the real-time calculated speed compensation amount, including:

[0022] Waiting time T after lubrication rolling starts sf The speed compensation of the previous frame is changed from the initial value of 0 to an acceleration a. sf The real-time calculation amount of the speed compensation amount added to the previous rack;

[0023] Waiting time T after lubrication rolling starts sb The speed compensation of the next frame is changed from the initial value of 0 to the acceleration a. sb The real-time calculation amount of the speed compensation amount added to the next rack.

[0024] Furthermore, T sf The value range is 0 to 500, and the unit is ms; a sf The value range is 0 to 1, and the unit is m / s. 2 ;T sb The value range is 0 to 500, and the unit is ms; a sb The value range is 0 to 1, and the unit is m / s. 2 .

[0025] Furthermore, after lubrication rolling stops, the speed compensation for the preceding and following stands is cancelled, including:

[0026] Waiting time T after lubrication rolling stops ff The speed compensation amount of the previous frame is calculated in real time from the speed compensation amount of the previous frame, and then expressed as acceleration a. ff Reduce to 0;

[0027] Waiting time T after lubrication rolling stops fb The speed compensation amount of the subsequent frame is calculated in real time from the speed compensation amount of the subsequent frame, with acceleration a. fb Reduce to 0.

[0028] Furthermore, T ff The value range is 0 to 500, and the unit is ms; a ff The value range is 0 to 1, and the unit is m / s. 2 ;T fb The value range is 0 to 500, and the unit is ms; a fbThe value range is 0 to 1, and the unit is m / s. 2 .

[0029] In another aspect, the present invention also provides an electronic device comprising a processor and a memory; wherein the memory stores at least one instruction, which is loaded and executed by the processor to implement the above-described method.

[0030] In another aspect, the present invention also provides a computer-readable storage medium storing at least one instruction, which is loaded and executed by a processor to implement the above method.

[0031] The beneficial effects of the technical solution provided by this invention include at least the following:

[0032] The speed compensation method for hot continuous rolling under lubricated rolling provided by this invention corrects the speed between stands, making the flow rate between stands more accurate. This solves the problems of width narrowing, thickness fluctuation, and rolling instability caused by the use of lubricated rolling in hot continuous rolling, and has positive significance for improving rolling stability and enhancing strip quality. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic flowchart of the speed compensation method under hot continuous rolling lubrication provided in an embodiment of the present invention;

[0035] Figure 2 This is a detailed flowchart of the speed compensation method under hot continuous rolling lubrication provided in the embodiments of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of a rolling equipment using a lubrication rolling method provided in an embodiment of the present invention;

[0037] Figure 4 This is a system block diagram of the electronic device provided in the embodiments of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 21. Rolling oil nozzle; 22. Loop; 23. Strip steel; 24. Work roll; 25. Support roll;

[0040] 31. Previous rack; 32. Current rack; 33. Next rack. Detailed Implementation

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

[0042] First, it should be noted that in the embodiments of the present invention, the words "exemplarily," "for example," etc., are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the term "exemplarily" is intended to present the concept in a specific manner. Furthermore, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either one or the other.

[0043] First Embodiment

[0044] This embodiment provides a speed compensation method for hot continuous rolling with lubrication. This method can be implemented by electronic equipment, and the execution flow of this method is as follows: Figure 1 As shown, it includes the following steps:

[0045] S1, determine the stand to be used for lubrication rolling and record it as the current stand; and according to the rolling sequence, record the adjacent stand before the current stand as the previous stand and the adjacent stand after the current stand as the next stand.

[0046] S2, determine the rolling process parameters for lubricated rolling, as well as the start and stop times for lubricated rolling;

[0047] The rolling process parameters for lubrication rolling include: the real-time oil volume of the current stand for lubrication rolling, the upper limit of the oil volume of the current stand for lubrication rolling, the lower limit of the oil volume of the current stand for lubrication rolling, the actual angle of the front looper of the current stand, the set angle of the front looper of the current stand, the actual angle of the rear looper of the current stand, and the set angle of the rear looper of the current stand.

[0048] S3, based on the rolling process parameters of lubricated rolling, calculate the speed compensation amount for the previous stand and the next stand respectively;

[0049] It should be noted that the "speed" mentioned above refers to the real-time speed during the rolling process, that is, the actual speed of the rolling mill after lubrication rolling is put into operation. If we classify it according to the strip threading speed, the speed during acceleration, the rolling speed, the speed during deceleration, and the steel ejection speed, then lubrication rolling is generally put into operation at the strip threading speed. However, because the duration is long, it will run through the entire acceleration and deceleration process. Therefore, this speed compensation amount is a correction based on the actual speed of the rolling mill.

[0050] Specifically, in this embodiment, such as Figure 2 As shown, S3 above includes the following steps:

[0051] S31, based on the amount of lubricating oil used during lubrication rolling of the current stand, the actual angle of the front looper of the current stand, and the set angle of the front looper of the current stand, calculate the speed compensation amount of the previous stand, as follows:

[0052]

[0053] Among them, V cf Indicates the speed compensation amount of the previous rack; O lu This indicates the real-time oil level for lubrication during the current stand rolling process; O lumax Indicates the maximum amount of lubricating rolling oil in the current stand; O lumin This indicates the lower limit of the current stand lubrication oil level; k luf This represents the lubrication rolling compensation coefficient of the previous stand, with a value ranging from 0 to 0.25; L af The actual angle of the front looper of the current rack; L saf Set the angle for the front looper of the current rack; k lpf The current frame front loop angle compensation coefficient, with a value ranging from 0 to 0.5; T A This is the controller execution cycle, with a value ranging from 1 to 32, and the unit is ms.

[0054] S32, based on the amount of lubricating oil used during lubrication rolling of the current stand, the actual angle of the looper behind the current stand, and the set angle of the looper behind the current stand, calculate the speed compensation for the next stand, as follows:

[0055]

[0056] Among them, V cb Indicates the speed compensation amount for the next rack; O lu This indicates the real-time oil level for lubrication during the current stand rolling process; O lumax Indicates the maximum amount of lubricating rolling oil in the current stand; O lumin This indicates the lower limit of the current stand lubrication oil level; k lub This represents the lubrication rolling compensation coefficient for the next stand, with a value ranging from 0 to 0.25; L ab Indicates the actual angle of the rear looper of the current rack; L sab Set the angle for the rear looper of the current rack; k lpb The current frame rear looper angle compensation coefficient, with a value ranging from 0 to 0.5; T A This is the controller execution cycle, with a value ranging from 1 to 32, and the unit is ms.

[0057] S4. After the lubrication rolling starts, the speed compensation of the previous stand is performed based on the real-time calculation of the speed compensation amount of the previous stand, and the speed compensation of the next stand is performed based on the real-time calculation of the speed compensation amount of the next stand.

[0058] Specifically, in this embodiment, S4 includes the following steps:

[0059] S41, Waiting time T after lubrication rolling starts sf The speed compensation amount V of the previous frame cf Starting from an initial value of 0 with an acceleration a sf Increased to real-time computing requirements; among which, the front rack waiting time T sf Its value ranges from 0 to 500, and the unit is ms; front frame acceleration a sf Its value ranges from 0 to 1, and its unit is m / s. 2 .

[0060] S42, waiting time T after lubrication rolling starts sb The speed compensation amount V of the next frame cb Starting from an initial value of 0 with an acceleration a sb Increased to real-time computing requirements; among which, the back rack waiting time T sb Its value ranges from 0 to 500, and the unit is ms; rear frame acceleration a sb Its value ranges from 0 to 1, and its unit is m / s. 2 .

[0061] S5, after lubrication rolling stops, cancel the speed compensation of the previous stand and the next stand.

[0062] Specifically, in this embodiment, such as Figure 2 As shown, S5 above includes the following steps:

[0063] S51, waiting time T after lubrication rolling stops. ff The speed compensation amount V of the previous frame cf The amount of real-time computation is accelerated by a. ff Reduced to 0; where the front rack waiting time T ff Its value ranges from 0 to 500, and the unit is ms; front frame acceleration a ff Its value ranges from 0 to 1, and its unit is m / s. 2 .

[0064] S52, waiting time T after lubrication rolling stops. fb The speed compensation amount V of the next frame cb The amount of real-time computation is accelerated by a. fb Reduced to 0; where the rear rack waiting time T fb Its value ranges from 0 to 500, and the unit is ms; rear frame acceleration a fb Its value ranges from 0 to 1, and its unit is m / s. 2 .

[0065] In summary, this embodiment provides a speed compensation method for hot continuous rolling with lubrication. This method, by correcting the speed between stands, makes the flow rate between stands more accurate, solving the problems of width narrowing, thickness fluctuation, and rolling instability caused by the use of lubrication rolling in hot continuous rolling. It has positive significance for improving rolling stability and enhancing strip quality.

[0066] Second Embodiment

[0067] This embodiment applies the speed compensation method for hot continuous lubrication rolling of the present invention to a hot rolling finishing mill, and takes the F2 finishing mill as an example to further illustrate the implementation process of the method of the present invention. The structure of the rolling equipment using the lubrication rolling method is as follows: Figure 3 As shown.

[0068] Specifically, in this application scenario, the method of the present invention is operated according to the following steps:

[0069] (1) The strip 23 is bitten into the previous frame 31 and threaded to the current frame 32, and then threaded to the next frame 33;

[0070] (2) Assuming that after the strip 23 is threaded, the rolling oil nozzle 21 starts to spray oil and starts lubrication rolling; assuming that the current rolling oil volume is 100ml / min, the upper limit of the allowed spray rolling oil volume is 600ml / min, the lower limit of the allowed spray rolling oil volume is 50ml / min, the lubrication rolling compensation coefficient of the front stand of the lubrication rolling mill is 0.1, the current stand front looper angle compensation coefficient is 0.15, the front looper set angle is 23°, the actual angle is 22°, the controller execution cycle is 4ms, the calculated speed compensation amount of the front stand of the lubrication rolling mill is 0.056m / s, and since the front looper angle changes in real time, its speed compensation amount also changes in real time with the looper angle;

[0071] (3) Similarly, assuming that the lubrication rolling compensation coefficient of the back stand of the lubrication rolling mill is 0.2, the current back loop angle compensation coefficient is 0.25, the back loop set angle is 22°, the actual angle is 23°, the controller execution cycle is 4ms, the speed compensation amount of the back stand after the lubrication rolling mill is put into use is calculated to be 0.099m / s, and since the back loop angle changes in real time, its speed compensation amount also changes in real time with the loop angle.

[0072] (4) Waiting time 200ms, before putting the lubricated rolling mill stand into operation, the stand speed compensation amount is increased from the initial value of 0 to an acceleration of 0.1m / s². 2 Increased to 0.056 m / s; waiting time 250 ms, after the lubricated rolling mill stand is put into use, the stand speed compensation is increased from the initial value of 0 to an acceleration of 0.15 m / s. 2 Increased to 0.099 m / s;

[0073] (5) Assuming that lubrication rolling is stopped when the tail of the strip is about to reach the first stand of the finishing mill, the waiting time is 300ms. The real-time speed compensation of the stand before the lubrication rolling stand is increased by an acceleration of 0.15m / s. 2 Restore to 0; waiting time 350ms, after the lubrication rolling mill stand is put into use, the real-time speed compensation of the stand is calculated with an acceleration of 0.2m / s². 2 Restored to 0.

[0074] Third Embodiment

[0075] This embodiment provides an electronic device, such as... Figure 4 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, which is loaded and executed by the processor to implement the method of the first embodiment described above. Furthermore, 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.

[0076] Below, in conjunction with Figure 4 A detailed introduction to each component of this electronic device is provided below:

[0077] The processor is the control center of the electronic device. The electronic device may include multiple processors, each of which can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The term "processor" can refer to a single processor or a collective term for multiple processing elements. For example, a processor can be one or more central processing units (CPUs), other general-purpose processors, application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more digital signal processors (DSPs), one or more field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor can perform various functions of the electronic device by running or executing software programs stored in memory and by calling data stored in memory.

[0078] In a specific implementation, as one example, the processor may include one or more CPUs, for example... Figure 4 CPU0 and CPU1 shown are, of course, merely illustrative examples.

[0079] The memory is used to store the software program that executes the solution of the present invention, and the processor controls its execution. For specific implementation methods, please refer to the above method embodiments, which will not be repeated here.

[0080] Optionally, the memory may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory may be integrated with the processor or may exist independently, and may be accessed through the interface circuit of the electronic device (…). Figure 4 (Not shown in the image) is coupled to the processor; however, this embodiment of the invention does not impose specific limitations on this.

[0081] The transceiver may include a receiver and a transmitter. Figure 4 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function. The transceiver can be integrated with the processor or exist independently, and is connected through the interface circuit of the electronic device (…). Figure 4 (Not shown in the image) is coupled to the processor, and this embodiment of the invention does not specifically limit this.

[0082] In addition, it should be noted that, Figure 4 The structure of the electronic device shown is not intended to limit the device. Actual devices may include more or fewer components than shown, or combine certain components, or have different component arrangements. Furthermore, the technical effects achieved by this electronic device when performing the method of the first embodiment described above can be referenced to the technical effects described in the first embodiment; therefore, they will not be repeated here.

[0083] Fourth embodiment

[0084] This embodiment provides a computer-readable storage medium storing at least one instruction, which is loaded and executed by a processor to implement the method of the first embodiment described above. The computer-readable storage medium may be a ROM, random access memory, CD-ROM, magnetic tape, floppy disk, or optical data storage device, etc. The instruction stored therein can be loaded and executed by a processor in a terminal.

[0085] Furthermore, it should be noted that the present invention can be provided as a method, apparatus, or computer program product. Therefore, embodiments of the present invention can take the form of a completely or partially hardware embodiment, a completely or partially software embodiment, or an embodiment combining software and hardware aspects. Moreover, when implemented in software, embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any usable medium accessible to a computer or a data storage device such as a server or data center containing one or more sets of usable media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive (SSD).

[0086] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0087] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing terminal equipment to cause a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0088] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element. Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone, where A and B can be singular or plural. Additionally, the character " / " in this text generally indicates an "or" relationship between the preceding and following objects, but it can also indicate an "AND / OR" relationship. Please refer to the context for specific interpretations. "At least one" refers to one or more items, while "more than" refers to two or more items. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can be represented as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0089] Furthermore, it is understood that in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply 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.

[0090] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0091] In the several embodiments provided by this invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of functional modules / units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings or direct couplings or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs. Additionally, the functional units in the various embodiments of this invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0092] If the method 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 the present invention, or the part that contributes to the prior art, or a 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 the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0093] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. It should be pointed out that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept of the present invention, can make several improvements and modifications without departing from the principles described herein. These improvements and modifications should also be considered within the scope of protection of the present invention. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

Claims

1. A method for compensating for speed in hot continuous rolling with lubricated rolling, characterized in that The application relates to a lubricating rolling mill rack speed compensation method. Determine the lubricating rolling mill rack, marked as a current rack; According to the rolling sequence, the adjacent rack before the current rack is marked as a previous rack, and the adjacent rack after the current rack is marked as a next rack; Determine the rolling process parameters of the lubricating rolling mill, and the starting and stopping time of the lubricating rolling mill; Based on the rolling process parameters of the lubricating rolling mill, the speed compensation amount of the previous rack and the next rack is calculated respectively; After the lubricating rolling mill is started, the speed compensation of the previous rack is carried out based on the real-time calculation amount of the speed compensation amount of the previous rack, and the speed compensation of the next rack is carried out based on the real-time calculation amount of the speed compensation amount of the next rack; After the lubricating rolling mill is stopped, the speed compensation of the previous rack and the next rack is cancelled; The rolling process parameters of the lubricating rolling mill include the real-time oil amount of the current rack lubricating rolling mill, the upper limit of the current rack lubricating rolling mill oil amount, the lower limit of the current rack lubricating rolling mill oil amount, the actual angle of the front loop of the current rack, the set angle of the front loop of the current rack, the actual angle of the rear loop of the current rack and the set angle of the rear loop of the current rack; The calculation formula of the speed compensation amount of the previous rack is: V cf represents the speed compensation amount of the previous stand; O lu represents the real-time oil amount of the current stand lubrication rolling; O lumax represents the upper limit of the current stand lubrication rolling oil amount; O lumin represents the lower limit of the current stand lubrication rolling oil amount; k luf represents the previous stand lubrication rolling compensation coefficient; L af represents the actual angle of the front loop of the current stand; L saf represents the set angle of the front loop of the current stand; k lpf represents the front loop angle compensation coefficient of the current stand; T A is the controller execution period.

2. The method of speed compensation for hot continuous rolling and lubrication under rolling according to claim 1, characterized in that, k luf k is in the range of 0-0.25; k lpf k is in the range of 0-0.5; T A k is in the range of 1 ms-32 ms.

3. The method of speed compensation for hot continuous rolling and lubrication under rolling according to claim 1, characterized in that, The calculation formula of the speed compensation amount of the next rack is: V cb represents the speed compensation amount of the next stand; O lu represents the real-time oil amount of the current stand lubrication rolling; O lumax represents the upper limit of the current stand lubrication rolling oil amount; O lumin represents the lower limit of the current stand lubrication rolling oil amount; k lub represents the next stand lubrication rolling compensation coefficient; L ab represents the actual angle of the back looper of the current stand; L sab represents the set angle of the back looper of the current stand; k lpb represents the angle compensation coefficient of the back looper of the current stand; T A is the controller execution period.

4. The method of speed compensation for hot continuous rolling and lubrication under rolling according to claim 3, characterized in that, k lub k ranges from 0 to 0.25; k lpb k ranges from 0 to 0.5; T A T ranges from 1 ms to 32 ms.

5. The method of speed compensation for hot continuous rolling and lubrication under rolling according to claim 1, characterized in that, After the lubricating rolling mill is started, the speed compensation of the previous rack is carried out based on the real-time calculation amount of the speed compensation amount of the previous rack, and the speed compensation of the next rack is carried out based on the real-time calculation amount of the speed compensation amount of the next rack, including: waiting time T after the rolling is lubricated sf The speed compensation amount of the previous stand is increased from the initial value 0 to the real-time calculated amount of the speed compensation amount of the previous stand with the acceleration a sf the speed compensation amount of the previous stand the waiting time T after the start of rolling to be lubricated sb The speed compensation amount of the subsequent stand is increased from the initial value 0 to the real-time calculated amount with an acceleration a sb the real-time calculated amount of the speed compensation amount of the subsequent stand.

6. The method for compensating the speed in hot continuous rolling and lubricating rolling according to claim 5, characterized in that, T sf a is in the range of 0-500 ms sf b is in the range of 0-1 m / s 2 ; T sb a is in the range of 0-500 ms sb b is in the range of 0-1 m / s 2 .

7. The method of speed compensation for hot continuous rolling and lubricating under rolling according to Claim 1, wherein, After the lubricating rolling mill is stopped, the speed compensation of the previous rack and the next rack is cancelled, including: Waiting time T after lubrication rolling stops ff The speed compensation amount of the previous frame is calculated in real time from the speed compensation amount of the previous frame, and then expressed as acceleration a. ff Reduce to 0; Waiting time T after lubrication rolling stops fb The speed compensation amount of the subsequent frame is calculated in real time from the speed compensation amount of the subsequent frame, with acceleration a. fb Reduce to 0.

8. The method for compensating the speed in hot continuous rolling and lubricating under rolling as claimed in claim 7, wherein, T ff a is in the range of 0-500 ms ff b is in the range of 0-1 m / s 2 ; T fb The value range of a is 0-500, unit: ms fb The value range of b is 0-1, unit: m / s 2 .

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